United States Office of Research and EPA/600/R-99/073
Environmental Protection Development August 1999
Agency Washington, DC 20460
oEPA Results from EPA's Drinking
Water Radiochemistry
Performance Evaluation
Studies for Calendar Year 1995
339POS99 cov-073
-------
TECHNICAL REPORT DATA
1. Report No.
EPA/600/R-99/W4-
2.
3. Recipient's Accession No.
4. Title and Subtitle
5. Report Date
01/01/95-12/31/95
Kesuits Trom th'A s unnKing water Kaaiocnemistry Kerrormance tvaiuation btuaies tor
Calendar Year 1993
6. Performing Organization Code
7. Authors)
Pia, S. H.
8. Performing Organization Report
No. (TIP#)
NERL-LV 99-100
9. Performing Organization Name & Address
U.S. EPA, Office of Research & Development, National Exposure Research Laboratory
Environmental Sciences Division, Environmental Chemistry Branch
944 E. Harmon Ave.
Las Vegas, NV 89119
10. Program Element Number
11. Contract/Grant No.
12. Sponsoring Agency Name & Address -
U.S. EPA, Office of Research & Development, National Exposure Research Laboratory
Environmental Sciences Division, Environmental Chemistry Branch
944 E. Harmon Ave.
Las Vegas, NV89119
13. Type of Report & Period Covered
Radiation QA, CY 1995
14. Sponsoring Agency Code
EPA 600/07
16. Supplemental Notes or Complete Citation:
Pia, S.H. Results from EPA's Radiation Performance Evaluation (Drinking Water/QA) Studies for Calendar
Year 1993, Las Vegas, NV:U.S. Environmental Protection Agency, 1993 (Rereleased 1999)
16. Abstract
Notice of termination of EPA's radiochemistry performance evaluation program was announced in the Federal
Register on June 12, 1997 (62:113). Therefore, as of March 1999, all technical assistance available from the
radiochemistry component at the EPA in Las Vegas, NV, is terminated.
The following report contains in chronological order the results for radiochemistry studies for the period indicated.
The results are organized by radiochemistry study title and date and under each title a summary report. The
summary report contains the laboratory code for each participant, the triplicate results submitted by each participant,
the average of the submitted results, and summary statistics. Introducing each report is a discussion of the statistics
and the scoring criterion.
We are providing this report to assist organizations interested in an historical account of radiochemistry Performance
Evaluation Studies. Mention of trade names, corporate names or commercial products does not constitute
endorsement or recommendation by EPA.
17. Key Words and Document Analysts
a. Descriptors:
PE Studies, PE, radiochemistry, gross alpha, gross
beta, strontium, tritium, plutonium, uranium, radium,
gamma, mixed gamma, blind, iodine, air filter,
radioactivity
b. Identifiers/Open-ended Terms
o. COSATI
18. Distribution Statement
19. Security Class (This Report)
UNCLASSIFIED
21. No. of Pages
440
RELEASE TO THE PUBLIC
20. Security Class (This Page)
UNCLASSIFIED
22. Price
EPA 2220-1
-------
HUO-Bb-iSyy 14-4U
UbtPH
ORD CLEARANCE FORM
513 569 7566 P.03/06
1. EPA Report No.
EPAf600/fl-99/Q-7 ,3
2. Product Code
R
3. Lab/ Draft No,
NERIAV 99-100
4- Copyright Pgiitrtmiun
0 Yes (Attached)
X Not Appticabla
6.TW1
Results fiom EPA.'# OrioWnfl Water R»dioch«misiry Performance Evalueiion Studies for Calendar Ywr 1995
6. Airthoils) In order cf amhOtihip, Affiliation, and Address (Identify EPA authors with lab/Cantor)
Pia. S. H.
U.S. EPA
National Exposure Research Laboratory
EfMironmsnxal Sciences Division, Eiwironmentel Chemiswy Branch
PO Box 93478
Las Vegas, NV B9193-3478
7. Internet Address (indicata whether it is your preferred or active URL1. Attach diskette containing the abstract in WordPerfect.
N/A
8. OMJS Taak No., GPRA ID leg, 080101). APQ, and APM
Project 0 J0477
10, ComntifiMIAnntanct Agieemem No.
3. Project Officer Name, Telephone No. and Cotmaet/lAG, CAG f
5. Pia, 702/788-2102
N/A
M. Product Type
~ Peer Reviewed Journal Article (See Hock 12)
X Published Report
~ Summaiy
~ Symposium Paper (See block 12)
~ Book Chapter (See block 12)
~ Exhibit/Poster
QEPA-Sporaoned Conferenee/Semlnar/Wocfc&hop
~ Research Brief or Issue Paper
O Newsletter
~ Internal Report (distribution limited to EPA)
~ Unpublished Report
O Computer Product Scientific Data
~ Other
(Identify product type. Use Woo* 12 If needodf
14, SJsneture/DA
" 12. Bibliographic citation (For symposia papers and abstracts, ffve
name, place end date. For referaed publications. glva name where
manuscript is being submitted, accepted or published.)
Submitted.
Accepted,
_Pu&tehad_
13. Technical Information Manager
Stephen Pi*. Originator
Date
Signature
Christian, G. DavgMon, Supervisor
15, Comments or Keywords
16a. Product's Pw Heviow Category
{Rerawd papers are usually Category 3; abstracts, EPA reports
and nen-referoad products are usually Categoiy 4.1
Q1. Major sci. & tech. work product (AA signa In 18)
~ 2. Important sci. & tech. work product (LD signs in 181
D 3. General eci. & tech. work product (BC signs 14. DD signs 18)
X 4. Other science & tech. work product |BC signs 14 ana 18)
16b,
Contact tor p*«r review ccmutants (Signature and date)
- - mramnn laiqr
17. Thu, product enunewwt rww pmcy or affocis exists palicy? ichacwe end inMi Bne). O Yes. memo wtacned
18. Lob/Center Director Signature and Date
(Title and Signature)
XNo.
0RD»362 iCin • Rgy, 2/99)
_Christian 0, Daughton. Chiaf. Environment) Chemistry Branch n«t*
C:\2_oJdnVelD0ClWPlrBcyftnSS.wpd
-------
United States Office of Research and EPA 600/R-95/056
Environmental Protection Development April 1995
Agency Washington, DC 20460
&EPA Strontium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the January 13, 1995 Data
Q593RSD94 eov-056
-------
Strontium in Water
Performance Evaluation Study
January 13, 1995
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Strontium in Water; January 13, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency
It has been subject to the Agency's review
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995 1/12
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/12 EMSL-LV Performance Evaluation: Strontium in Water, 13- Jan-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
-------
EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995
3/12
Strontium-89 Statistical Summary 108 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 5.0; the control limits
are 11.3 to 28.7; the warning regions are 11.3 to 14.2 and 25.8 to 28.7
20(18.5 %) Failed to respond
5(4.6 %) Out of control •
but not an outlier
Statistic
WhmS
. 78(72.2 %) Within all limits
Respondents
* 5(4.6 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
18.77
3.77
14.20
20.08
-6.17
-0.33
19.33
-3.33
-0.18
Grand Avg 18.77
3.77
14.20
20.08
-6.17
-0.33
19.33
-3.33
-0.18
5(5.7 %) More than 3 norm. S.D.
5(5.7 %) Between 2 and 3 norm. S.D.
53(60.2 %) Within 1 norm. S.D.
of known value
* 25(28.4 %) Between 1 and 2 norm. S.D.
-------
4/12
EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995
/•
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rag anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
19.0
19.0
20.0
0.58
0.118
19.33
0.20
-0.23
AE
20.0
20.0
19.0
0.58
0.118
19.67
0.31
-0.12
AF
22.0
23.0
22.0
0.58
0.118
22.33
1.24
0.81
AJ
21.0
22.0
16.0
3.21
0.709
19.67
0.31
-0.12
AK
23.0
22.0
23.0
0.58
0.118
22.67
1.35
0.92
AL
23.0
25.0
23.0
1.15
0.236
23.67
1.70
1.27
AU
20.0
18.0
21.0
1.53
0.354
19.67
0.31
-0.i2
AW ^
n.o
n.o
15.0
1.15
0.236
^ 16.33
-0.84
-1.27
AZ
BA
20.0
22.0
19.0
23.0
20.0
24.0
0.58
1.00
0.118
0.236
19.67
23.00
0.31
1.47
-0.12
1.04
0.118
17.67
BH
18.0
17.0
17.0
0.58
0.118
17.33
-0.50
-0.92
BL
20.0
22.0
20.0
1.15
0.236
20.67
0.66
0.23
BM
19.0
20.0
20.0
0.58
0.118
19.67
0.31
-0.12
BO
21.0
21.0
22.0
0.58
0.118
21.33
0.89
0.46
C
22.0
22.0
22.0
0.00
0.000
22.00
1.12
0.69
CA
16.0
19.0
18.0
1.53
0.354
^ 17.67 _
-0.38
-0.81
g|CE:i
MBMMI
Pgllll
SHE
CG
22.0
20.0
18.0
2.00
0.473
20.00
0^43
" 0 00
CJ
21.0
16.0
20.0
2.65
0.591
19.00
0.08
-0.35
CK
17.0
18.0
19.0
1.00
0.236
18.00
-0.27
-0.69
CO
9.0
8.0
4.0
2.65
0.591
7.00
-4.08
-4.50
CQ
15.0
15.0
14.0
0.58
0.118
14.67
-1.42
-1.85
CS
15.0
16.0
16.0
0.58
0.118
15.67
-1.07
-1.50
CX
14.0
12.0
22.0
5.29
1.345
16.00
-0.96
-1.39
D
14.0
9.0
10.0
2.65
0.591
11.00
-2.69
-3.12
DD
23.0
22.0
24.0
1.00
0.236
23.00
1.47
1.04
DE
20.0
21.0
21.0
0.58
0.118
20.67
0.66
0.23
DG
28.0
25.0
23.0
2.52
0.591
25.33
2.28
1.85
DO
21.0
20.0
18.0
1.53
0.354
19.67
0.31
-0.12
DT
20.0
19.0
18.0
1.00
0.236
19.00
0.08
-0.35
DZ
23.0
25.0
24.0
1.00
0.236
24.00
1.81
1.39
E
18.0
19.0
17.0
1.00
0.236
18.00
-0.27
-0.69
EB
27.0
28.0
29.0
1.00
0.236
28.00
3.20
2.77
EL
22.0
22.0
22.0
0.00
0.000
22.00
1.12
0.69
FU
26.0
23.0
25.0
1.53
0.354
24.67
2.04
1.62
FZ
iWllllllISS
Ifrfll!
Iffllill
GQ
18.0
18.0
18.0
0.00
0 000
18.00
-0.27
-0.69
HK
18.0
18.0
18.0
0.00
0.000
18.00
-0.27
-0.69
HP
17.0
15.0
15.0
1.15
0.236
15.67
-1.07
-1.50
I
24.0
24.0
27.0
1.73
0.354
25.00
2.16
1.73
IC
18.0
18.0
19.0
0.58
0.118
18.33
-0.15
-0.58
• =
No data submitted
TAG SYMBOLS
ft = Above control
0 s
Insufficient data
x =
Determined to be an outlier
U = Below control
a
limit
limit
-------
EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995 5/12
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
J
20.0
21.0
21.0
JE
19.0
21.0
20.0
JS
17.0
19.0
20.0
JY
13.0
12.0
17.0
K
19.0
19.0
16.0
KH
21.0
20.0
21.0
KL
20.0
18.0
20.0
KX
10.0
10.0
10.0
L
22.0
21.0
23.0
LT
19.0
20.0
21.0
M
20.0
18.0
20.0
MQ
16.0
18.0
15.0
N
20.0
21.0
18.0
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
0.58
1.00
1.53
2.65
1.73
0.58
1.15
0.00
1.00
1.00
1.15
1.53
1.53
fill
0.58
0.118
0.236
0.354
0.591
0.354
0.118
0.236
0.000
0.236
0.236
0.236
0.354
0.354
0.118
20.67
0.66
0.23
20.00
0.43
0.00
18.67
-0.03
-0.46
14.00
-1.65
-2.08
18.00
-0.27
-0.69
20.67
0.66
0.23
19.33
0.20
-0.23
10.00
-3.04
-3.46
22.00
1.12
0.69
20.00
0.43
0.00
19.33
0.20
-0.23
16.33
-0.84
-1.27
19.67
0.31
-0.12
20.33
0.354
22.67
mmr.
0.118
19.67
0.827
0.709
24.33
mmmm
QU
19.0
27.0
26.0
4.36
0.945
24.00
QW
17.0
20.0
19.0
1.53
0.354
18.67
QZ
20.0
21.0
20.0
0.58
0.118
20.33
R
16.0
13.0
_ 14.0
1.53
0.354
14.33
RC
r...
li
ill
RM
j«§ti§iti
MH
RR
20.0
19.0
19.0 '
0.58
0.118
19.33
RV
13.0
13.0
14.0
0.58
0.118
13.33
S
19.0
19.0
19.0
0.00
0.000
19.00
SC
18.0
19.0
21.0
1.53
0.354
19.33
SD
16.0
16.0
16.0
0.00
0.000
16.00
-1.85
1.50
1.39
-0.46
0.12
-1.96
15.33
12.67
17.33
0.20
-0.23
-1.88
-2.31
0.08
-0.35
0.20
-0.23
-0.96
-1.39
ifillli
-119
-1.62
-2.11
-2.54
-0.50
-0.92
-0.38
-0.81
ffenr
IP*
mmt
iiǤ
0.354
0.236
0.591
0.118
aswxwiw"
*Sli
16.33
23.00
^ ¦
:
* = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
<11 = Below control limit
-------
6/12 EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995
Strontium-89
Lab Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
TQ
17.0
17.0
20.0
1.73
0.354
U
18.0
18.0
17.0
0.58
0.118
UE
22.0
22.0
22.0
0.00
0.000
UN
21.0
20.0
20.0
0.58
0.118
UP
17.0
15.0
17.0
1.15
0.236
uw
16.0
16.0
16.0
0.00
0.000
VA
10.0
15.0_
12.0
2.52
0.591
VC
wm
:f 5 lit
VG
9.0
9.0
8.0
0.58
0.118
VI
27.0
25.0
18.0
4.73
1.120
VQ
VR
vu
w
19.0
16.0
15.0
2.08
0.473
WF
14.0
12 0
WG
16.0
22.0
18.0
3.06
0.709
X
11.0
10.0
12.0
1.00
0.236
z
20.0
21.0
21.0
0.58
0.118
18.00
17.67
22.00
20.33
16.33
16.00
12.33
8.67
23.33
-0.27
-0.38
1.12
0.54
-0.84
-0.96
-2.23
-3.50
1.58
-0.69
-0.81
0.69
0.12
-1.27
-1.39
-2.66
-3.93
1.15
18.67
11.00
20.67
-0.46
-3.12
0.23
16.67
-0.03
Data sorted by Laboratory Average
Average
Tafi
Lab
Average
Tag
Lab
Average
Tag
Lab
7.00
CO
17.33
BH
19.67
PB
8.67
VG
17.67
U
19.67
N
10.00
KX
17.67
ST
19.67
DO
11.00
X
17.67
CA
19.67
BM
11.00
D
17.67
BC
19.67
AZ
12.33
VA
18.00
TQ
19.67
AU
12.67
SM
18.00
K
19.67
AJ
13.33
RV
18.00
HK
19.67
AE
14.00
JY
18.00
GQ
20.00
TD
14.33
R
18.00
E
20.00
LT
14.67
PV
18.00
CK
20.00
JE
14.67
CQ
18.33
IC
20.00
CG
15.33
SI
18.67
WG
20.33
UN
15.67
HP
18.67
QW
20.33
QZ
15.67
CS
18.67
JS
20.33
NT
16.00
UW
19.00
s
20.67
Z
16.00
SD
19.00
DT
20.67
KH
16.00
CX
19.00
CJ
20.67
J
16.33
UP
19.33
sc
20.67
DE
16.33
TI
19.33
RR
20.67
.
BL
16.33
MQ
19.33
M
21.33
BO
16.33
AW
19.33
KL
22.00
UE
16.67
W
19.33
A
22.00
L
17.33
ss
19.67
T
22.00
EL
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
s Below control limit
-------
/?=
EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995
7/12
Strontium-89
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
22.00
C
23.00
DD
24.00
DZ
22.33
AF
23.00
BA
24.33
Q
22.67
OA
23.33
VI
24.67
FU
22.67
AK
23.67
AL
25.00
I
23.00
TL
24.00
QU
25.33
28.00
DG
EB
% responding labs
Frequency distribution
104
0
responding labs
-4 -2 6 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-t
o
u
-JL.
-4 -2 6 +2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted TAG SYMBOLS ft = Above control limit
L 0 s Insufficient data x = Determined to be an outlier = Below control limit J
-------
EMSL-LV Performance Evaluation: Strontium in Water, 13*Jan-1995 8/12
' >
Strontium-90 Statistical Summary 108 Participants
The known value of this nuclide is 15.0 pCi/1 with an expected precision of 5.0; the control limits
are 6.3 to 23.7; the warning regions are 6.3 to 9.2 and 20.8 to 23.7
12(11.1 %) Failed to respond
94(87.0 %) Within all limits
2(1.9 %) Outliers
Statistic Respondents Non-outliers
Mean
14.52
Grand Avg' 1457
Std. Dev.
2.54
1.86
Variance
6.44
3.47
% Coef. of Var.
17.48
13.06
% deviation of mean from known value
-3.22
-4.89
Norm. dev. of mean from known value
-0.19
-0.39
Median
14.00
14.00
% deviation of median from known value
-6.67
-6.67
Norm. dev. of median from known value
-0.39
-0.54
81(84.4 %) Within 1 norm. S.D.
of known value
2(2.1 %) More than 3 norm. S.D
13(13.5 %) Between 1 and 2 norm. S.D,
-------
9/12
EMSL-LV Performance Evaluation: Strontium in Water, 13- Jan-1995
¦ ¦ -
/
Strontium-90
*
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
14.0
14.0
14.0
0.00
0.000
14.00
-0.09
-0.35
AE
14.0
14.0
14.0
0.00
0.000
14.00
-0.09
-0.35
AF
14.0
14.0
14.0
0.00
0.000
14.00
-0.09
-0.35
AJ
14.0
12.0
14.0
1.15
0.236
13.33
-0.32
-0.58
AK
13.0
15.0
13.0
1.15
0.236
13.67
-0.21
-0.46
AL
13.0
14.0
13.0
0.58
0.118
13.33
-0.32
-0.58
AU
15.0
14.0
16.0
1.00
0.236
15.00
0.25
0.00
AW
18.0
18.0
16.0
1.15
0.236
17.33
1.06
0.81
AY
14.0
14.0
14.0
0.00
0.000
14.00
-0.09
-0.35
AZ
14.0
14.0
13.0
0.58
0.118
13.67
-0.21
-0.46
BA
12.0
12.0
13.0
0.58
0.118
12.33
-0.67
-0.92
BB
14.0
13.0
14.0
0.58
0.118
13.67
-0.21
-0.46
BC
13.0
13.0
13.0
0.00
0.000
13.00
-0.44
-0.69
BG
13.0
13.0
12.0
0.58
0.118
12.67
-0.55
-0.81
BH
16.0
17.0
18.0
1.00
0.236
17.00
0.95
0.69
BL
16.0
15.0
13.0
1.53
0.354
14.67
0.14
-0.12
BM
13.0
14.0
15.0
1.00
0.236
14.00
-0.09
-0.35
BO
13.0
12.0
13.0
0.58
0.118
12.67
-0.55
-0.81
C
15.0
14.0
13.0
1.00
0.236
14.00
-0.09
-0.35
CA
14.0
14.0
13.0
0.58
0.118
13.67
-0.21
-0.46
CE
15.0
15.0
15.0
0.00
0.000
15.00
0.25
0.00
CG
16.0
16.0
15.0
0.58
0.118
15.67
0.49
0.23
CJ
14.0
14.0
14.0
0.00
0.000
14.00
-0.09
-0.35
CK
15.0
16.0
16.0
0.58
0.118
15.67
0.49
0.23
CO
10.0
10.0
8.0
1.15
0.236
9.33
-1.71
-1.96
CQ
11.0
11.0
12.0
0.58
0.118
11.33
-1.02
-1.27
CS
17.0
17.0
16.0
0.58
0.118
16.67
0.83
0.58
CX
17.0
18.0
15.0
1.53
0.354
16.67
0.83
0.58
D
15.0
15.0
15.0
0.00
0.000
15.00
0.25
0.00
DD
14.0
14.0
13.0
0.58
0.118
13.67
-0.21
-0.46
DE
15.0
15.0
15.0
0.00
0.000
15.00
0.25
0.00
DG
11.0
11.0
12.0
0.58
0.118
11.33
-1.02
-1.27
DO
13.0
14.0
14.0
0.58
0.118
13.67
-0.21
-0.46
DT
15.0
15.0
15.0
0.00
0.000
15.00
0.25
0.00
DZ
17.0
18.0
19.0
1.00
0.236
18.00
1.29
1.04
E
15.0
15.0
15.0
0.00
0.000
15.00
0.25
0.00
EB
9.0
11.0
9.0
1.15
0.236
9.67
-1.59
-1.85
EL
17.0
20.0
18.0
1.53
0.354
18.33
1.41
1.15
FU
14.0
12.0
13.0
LOO
0.236
13.00
-0.44
-0.69
FZ
pilppiiiS
§Ppjjpptppi
1S118®
iifliplf|pl;wfer
GQ
14.0
14.0
14.0
0.00
0.000
14.00
3^09
-0.35
HK
13.0
13.0
13.0
0.00
0.000
13.00
-0.44
-0.69
HP
14.0
18.0
19.0
2.65
0.591
17.00
0.95
0.69
I
13.0
12.0
13.0
0.58
0.118
12.67
-0.55
-0.81
IC
13.0
13.0
12.0
0.58
0.118
12.67
-0.55
-0.81
• s No data submitted TAG SYMBOLS r ft = Above control limit
0 5 Insufficient data x = Determined to be an outlier H s Below control limit
-------
EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995 10 /12
Strontium-90
Lab Res. 1
Exper. Rag anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
J
JE
JS
JY
K
KH
KL
KX
L
LT
M
MQ
N
NJ
NT
OA
OL
15.0
16.0
15.0
13.0
12.0
14.0
15.0
14.0
14.0
17.0
12.0
17.0
15.0
15.0
15.0
14.0
14.0
14.0
13.0
18.0
15.0
14.0
17.0
11.0
14.0
14.0
14.0
17.0
14.0
14.0
14.0
14.0
16.0
14.0
14.0
17.0
12.0
16.0
14.0
WMBm
•iiii
16.0
14.0
16.0
14.0
16.0
13.0
0.58
1.00
0.58
0.58
1.15
0.58
1.53
0.58
0.00
0.00
0.58
1.53
0.58
0.00
0.58
0.118
14.67
0.14
-0.12
0.236
16.00
0.60
0.35
0.118
14.33
0.02
-0.23
0.118
13.67
-0.21
-0.46
0.236
13.33
-0.32
-0.58
0.118
13.67
-0.21
-0.46
0.354
16.33
0.72
0.46
0.118
14.33
0.02
-0.23
0.000
14.00
-0.09
-0.35
0.000
17.00
0.95
0.69
0.118
11.67
-0.90
-1.15
0.354
15.67
0.49
0.23
0.118
14.33
0.02
-0.23
MWWKK
iliilllftliil
0.000
16.00
0.60
0.35
0.118
13.67
-0.21
-0.46
PB
15.0
14.0
15.0
0.58
PV
lipif
29.0
9MM9I
„„ „
16.0 -
30.0
7.81
Q
14.0
15.0
16.0
1.00
QJ
13.0
12.0
10.0
1.53
QU
15.0
20.0
20.0
2.89
QW
14.0
14.0
10.0
2.31
QZ
13.0
12.0
13.0
0.58
R
11.0
9.0
11.0
1.15
0.118
2.245
0.236
0.354
0.591
0.473
0.118
0.236
RC
RM
RR
RV
S
sc
SD
14.0
16.0
15.0
13.0
14.0
plffll
|^||^|||||
14.0
15.0
15.0
13.0
14.0
14.0
15.0
15.0
14.0
13.0
0.00
0.58
0.00
0.58
0.58
>,t .'P.
0.000
0.118
0.000
0.118
0.118
14.67
i»s|p|ig
25.00
15.00
11.67
18.33
12.67
12.67
10.33
l!|fp
14.00
15.33
15.00
13.33
13.67
IlPillllllf
0.14
NMHI
3.72
0.25
-0.90
1.41
-0.55
-0.55
-1.36 _
lilifeillpSS
-0.09
0.37
0.25
-0.32
-0.21
-0.12
hHMMp
3.46 x
0.00
-1.15
1.15
-0.81
-0.81
-1.62
-a35 '
0.12
0.00
-0.58
-0.46
SI 12.0
12.0
13.0
0.58
0.118
12.33
-0.67
-0.92
SM 16.0
14.0
13.0
1.53
0.354
14.33
0.02
-0.23
SS 14.0
14.0
15.0
0.58
0.118
14.33
0.02
-0.23
ST 16.0
15.0
15.0
0.58
0.118
15.33
0.37
0.12
SZ 11.0
12.0
13.0
1.00
0.236
12.00
-0.78
-1.04
T 14.0
14.0
13.0
0.58
0.118
13.67
-0.21
-0.46
TD 12.0
16.0
10.0
3.06
0.709
12.67
-0.55
-0.81
TE 15.0
12.0
13.0
1.53
0.354
13.33
-0.32
-0.58
TH 28.0
27.0
' A A „
. 28.0 0.58
0.118
27%7 "*
4 64
4.39 x
TI 13.0
13.0
13.0
0.00
0.000
13.00
-0.44
-0.69
TL 14.0
16.0
16.0
1.15
0.236
15.33
0.37
0.12
• = No data submitted
TAG SYMBOLS
ft = Above control limit
0 = Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
-------
/?=
11/12 EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995
Strontium-90
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TQ
15.0
17.0
16.0
1.00
0.236
16.00
0.60
0.35
U
16.0
16.0
16.0
0.00
0.000
16.00
0.60
0.35
UE
13.0
13.0
13.0
0.00
0.000
13.00
-0.44
-0.69
UN
13.0
13.0
12.0
0.58
0.118
12.67
-0.55
-0.81 '
UP
14.0
15.0
15.0
0.58
0.118
14.67
0.14
-0.12
uw
14.0
14.0
14.0
0.00
0.000
14.00
-0.09
-0.35
VA
19.0
13.0
17.0
3.06
0.709
16.33
0.72
0.46
0.000
0.591
13.00
19.67
W
13.0 14.0
13.0
0.58
0.118
13.33
-0.32
-0.58
;:?wf
tvi«n 17 n
- lo.U 1 / .U
iflptlltlt
l§|gSlfi^
WG
15.0 15.0
160
0.58
0.118
15.33
0.37
0.12
X
19.0 19.0
19.0
0.00
0.000
19.00
1.64
1.39
Z
15.0 15.0
15.0
0.00
0.000
15.00
0.25
0.00
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab'
9.33
CO
13.33
W
14.00
AY
9.67
EB
13.33
TE
14.00
AF
10.33
R
13.33
SC
14.00
AE
11.33
DG
13.33
K
14.00
A
11.33
CQ
13.33
AL
14.33
SS
11.67
QJ
13.33
AJ
14.33
SM
11.67
M
13.67
T
14.33
N
12.00
SZ
13.67
SD
14.33
KX
12.33
SI
13.67
OA
14.33
JS
12.33
BA
13.67
KH
14.67
UP
12.67
UN
13.67
JY
14.67
PB
12.67
TD
13.67
DO
14.67
J
12.67
QZ
13.67
DD
14.67
BL
12.67
QW
13.67
CA
15.00
Z
12.67
IC
13.67
BB
15.00
S
12.67
I
13.67
AZ
15.00
Q
12.67
BO
13.67
AK
15.00
E
12.67
BG
14.00
UW
15.00
DT
13.00
VG
14.00
RR
15.00
DE
13.00
UE
14.00
L
15.00
D
13.00
TI
14.00
GQ
15.00
CE
13.00
HK
14.00
CJ
15.00
AU
13.00
FU
14.00
C
15.33
WG
13.00
BC
14.00
BM
15.33
TL
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
11
U
s Above control limit
= Below control limit
-------
-Sv
EMSL-LV Performance Evaluation: Strontium in Water, 13-Jan-1995 12/12
Strontium-90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
15.33
ST
16.00
J£
17.33
AW
15.33
RV
16.33
VA
18.00
DZ
15.67
MQ
16.33
KL
18.33
QU
15.67
CK
16.67
CX
18.33
EL
15.67
CG
16.67
CS
19.00
X
16.00
U
17.00
LT
19.67
VI
16.00
TQ
17.00
HP
25.00
X
PV
16.00
NT
17.00
BH
27.67
X
TH
% responding labs Frequency distribution
20-
10-
0J—, i ¦ , Wmm ¦¦¦¦¥¦¦¦ i r—¦ 1—" 1 1-
•6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding laba Frequency distribution
10-
-- f-lilflllif
0J—I— , , , ,¦¦¦ ,
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS It = Above control limit
0 = Insufficient data x e Determined to be an outlier U s Below control limit
-------
United States Office of Research and EPA 600/R-95/043
Environmental Protection Development March 1995
Agency Washington, DC 20460
&EPA Gross Alpha-Beta
:n Water Performance
Evaluation Study
\ Statistical Evaluation of
:he January 27, 1995 Data
Library Use Only
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
January 27, 1995
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
\y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Gross Alpha-Beta In Water; January 27,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 1/18
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected -
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 3/18 J
Gross Alpha
Statistical Summary
199 Participants
The known value of this nuclide is 5.0 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 13.7; the warning regions are 0.0 to 0.0 and 10.8 to 13.7
32(16.1 %) Failed to respond »„
2(1.0 %) Outliers '
Statistic
. 158(79.4 %) Within all limits
Respondents
7(3.5 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
5.85
2.60
6.76
44.43
17.05
0.33
5.00
0.00
0.00
Grand Avg 5.68
2.04
4.17
35.94
13.58
0.33
5.00
0.00
0.00
2(1.2 %) More than 3 norm. S.D.
7(4.2 %) Between 2 and 3 norm. S.D
. 141(84.4 %) Within 1 norm. S.D.
of known value
17(10.2 %) Between 1 and 2 norm. S.D.
-------
4/18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1905
Gross Alpha
Lab Res. 1
Res. 2 Res. 3
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
A
AE
AF
AH
AJ
AK
AL
AN
AP
AR
AU
AW
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CE
CG
CJ
CK
CO
CP
CQ
CS
CX
D
DB
DD
DE
DG
DH
DM
DO
DS
7.0
5.0
_ 3.0
10.0
8.0
8.0
6.0
7.0
6.0
7.0
5.0
6.0
4.0
4.0
5.0
4.0
7.0
MMi
4.0
9.0
5.0
6.0
4.0
SflSfSSi
6.0
5.0
5.0
5.0
4.0
5.0
3.0
5.0
6.0
4.0
5.0
7.0
8.0
12.0
6.0
1.0
3.0
10.0
6.0 7.0 0.58
5.0 4.0 0.58
4.0 4.0 0.58
>y--5'/s";'?•;>?-i~3v v
11.0
6.0
6.0
4.0
6.0
6.0
5.0
6.0
8.0
4.0
5.0
5.0
4.0
6.0
6.0
6.0
7.0
5.0
5.0
6.0
7.0
6.0
6.0
5.0
4.0
5.0
4.0
6.0
5.0
6.0
5.0
6.0
5.0
5.0
4.0
5.0
4.0
6.0
5.0
3.0
6.0
6.0
5.0
5.0
7.0
12.0
12.0
6.0
1.0
3.0
11.0
wm
4.0
8.0
5.0
8.0
2.0
5.0
4.0
13.0
4.0
5.0
5.0
4.0
70
5.0
5.0
7.0
6.0
8.0
13.0
2.65
1.15
1.00
1.00
1.00
0.00
1.15
0.58
1.15
0.58
0.58
0.00
0.00
0.58
ltp?%fpai
lllSilll
0.58
1.53
0.00
1.15
1.53
0.58
0.58
4.62
0.58
1.00
0.00
0.58
1.00
0.58
0.58
1.15
0.58
2.31
0.58
6.0
1.0
7.0
7.0
0.00
0.00
2.31
2.08
0.118
0.118
0.118
0.591
0.236
0.236
0.236
0.236
0.000
0.236
0.118
0.236
0.118
0.118
0.000
0.000
0.118
0.118
0.354
0.000
0.236
0.354
0.118
0.118
0.945
0.118
0.236
0.000
0.118
11M|I|
0.236
0.118
0.118
0.236
0.118
0.473
0.118
0.000
0.000
0.473
0.473
6.67 0.34
4.67 -0.35
3.67 -0.70
9.00
6.67
7.00
5.00
6.00
6.00
6.33
5.67
6.67
4.33
4.33
5.00
4.00
6.33
4.33
7.67
5.00
6.67
3.67
5.33
4.33
7.67
4.33
5.00
5.00
3.33
iiiiiiPii
llllllilli
6.00
5.67
4.67
5.67
6.67
9.33
12.33
i/i ;::;i
6.00
1.00
4.33
9.33
1.15
0.34
0.46
-0.24
0.11
0.11
0.23
0.00
0.34
-0.47
-0.47
-0.24
-0.58
0.23
-0.47
0.69
-0.24
0.34
-0.70
f/ ' ¦ >'s 5iV-
-0.12
-0.47
0.69
-0.47
-0.24
-0.24
-0.81
0.11
0.00
-0.35
0.00
0.34
1.27
231
illlK
0.58
-0.12
-0.46
1.39
0.58
0.69
0.00
0.35
0.35
0.46
0.23
0.58
-0.23
-0.23
0.00
-0.35
0.46
-0.23
0.92
0.00
0.58
-0.46
llippli
pglippt
012
-0.23
0.92
-0.23
0.00
0.00
-0.58
0.11
-1.62
-0.47
1.27
0.35
0.23
-0.12
0.23
0.58
1.50
2.54
•
0.35
-1.39
-0.23
1.50
• s No data submitted
(75 = Insufficient data
TAG SYMBOLS
x s Determined to he an outlier
ft 3 Above control limit
U s Below control limit
-------
(F
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 5/18
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rnganal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
DT
6.0
5.0
4.0
1.00
0.236
5.00
-0.24
0.00
DZ
9.0
8.0
10.0
1.00
0.236
9.00
1.15
1.39
E
4.0
4.0
5.0
0.58
0.118
4.33
-0.47
-0.23
EB
7.0
6.0
6.0
0.58
0.118
6.33
0.23
0.46
EL
5.0
6.0
4.0
1.00
0.236
5.00
-0.24
0.00
EN
5.0
5.0
4.0
0.58
0.118
4.67
-0.35
-0.12
EO
3.0
3.0
4.0
0.58
0.118
3.33
-0.81
-0.58
ER
6.0
5.0
6.0
0.58
0.118
5.67
0.00
0.23
EV
2.0
2.0
2.0
0.00
0.000
2.00
-1.27
-1.04
EW
FJ
FL
FN
FP
FZ
8.0
9.0
4.0
9.0
9.0
4.0
6.0
8.0
5.0
1.53
0.58
0.58
0.354
0.118
0.118
7.67
8.67
4.33
0.69
1.04
-0.47
0.92
1.27
-0.23
GE
gi|ll||^
GJ
lifMllIt
GQ
5.0
6.0
7.0
1.00
0.236
6.00
0.11
0.35
GT
7.0
4.0
4.0
1.73
0.354
5.00
-0.24
0.00
GZ
6.0
5.0
5.0
0.58
0.118
5.33
-0.12
0.12
HI
5.0
6.0
4.0
1.00
0.236
5.00
-0.24
0.00
HK
5.0
5.0
5.0
0.00
0.000
5.00
-0.24
0.00
HL
4.0
4.0
5.0
0.58
0.118
4.33
-0.47
-0.23
HP
4.0
4.0
4.0
0.00
0.000
4.00
-0.58
-0.35
I
6.0
5.0
5.0
0.58
0.118
5.33
-0.12
0.12
IC
6.0
5.0
4.0
1.00
0.236
5.00
-0.24
0.00
m
5.0
5.0
6.0
0.58
0.118
5.33
-0.12
0.12
IE
6.0
6.0
7.0
0.58
0.118
6.33
0.23
0.46
J
6.0
7.0
6.0
0.58
0.118
6.33
0.23
0.46
JE
4.0
4.0
6.0
1.15
0.236
4.67
-0.35
•0.12
JG
3.0
4.0
3.0
0.58
0.118
3.33
-0.81
-0.58
JM
5.0
5.0
4.0
0.58
0.118
4.67
-0.35
-0.12
JN
4.0
4.0
4.0
0.00
0.000
4.00
-0.58
-0.35
JP
6.0
6.0
5.0
0.58
0.118
5.67
0.00
0.23
JQ
5.0
5.0
5.0
0.00
0.000
5.00
-0.24
0.00
JS
7.0
8.0
7.0
0.58
0.118
7.33
0.57
0.81
JY
7.0
6.0
5.0
1.00
0.236
6.00
0.11
0.35
K
3.0
4.0
3.0
0.58
0.118
3.33
-0.81
-0.58
KC
11.0
11.0
11.0
0.00
0.000
11.00
1.84
2.08
KE
3.0
4.0
3.0
0.58
0.118
3.33
-0.81
-0.58
KH
5.0
7.0
10.0
2.52
0.591
7.33
0.57
0.81
KT
5.0
6.0
7.0
1.00
0.236
6.00
0.11
0.35
KX
8.0
6.0
6.0
1.15
0.236
6.67
0.34
0.58
L
5.0
4.0
5.0
0.58
0.118
4.67
-0.35
-0.12
• =
No data submitted
TAG SYMBOLS
1T s Above contro
0 3
Insufficient data
X s
Determined to be an outlier
a Below contro
-fit-
-------
6/18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995
Gross
Lab
Alpha
Res. 1
Res. 2 Res. 3
Exper.
Sigma
Rng anal
(R + SR)
LB' -
LP
T.I. .
LR
LT
M
MA
MF
MQ
MV
jaWapj
Average
•Normalized deviation
(grand-avg) (known) Tag
¦¦ " m-'- "fv/ 1 *4"
WmM
:V t
|i|||
m§
3.0
9.0
7.0
5.0
4.0
7.0
3.0
7.0
9.0
HP
5.0
5.0
5.0
4.0
10.0
8.0
5.0
4.0
6.0
0.58
1.53
1.00
0.00
0.58
1.00
0.118
0.354
0.236
VifKvy/.
0.000
0.118
0.236
3.33
8.67
8.00
5.00
4.33
6.00
-0.81
1.04
0.80
-0.24
-0.47
0.11
-0.58
1.27
1.04
m
0.00
-0.23
wMMM-m
7 2^1_
16 67 ¦!
!
Q Q1 •
r4M
0.00
0.000
5.00
-0.24
0.00
0.58
0.118
11.67
2.07
2.31
2.31
0.473
7.33
0.57
„
0.81
0.00
0.000
5.00
-0.24
0.00
0.58
0.118
3.67
-0.70
-0.46
1.00
0.236
5.00
-0.24
0.00
0.00
0.000
5.00
-0.24
0.00
0.00
0.000
7.00
0.46
0.69
2.00
0.473
12.00
2.19
2.42
0.58
0.118
9.33
1.27
1.50
0.58
0.118
3.33
-0.81
-0.58
0.58
0.118
3.33
-0.81
-0.58
0.58
0.118
4.67
-0.35
-0.12
0.58
0.118
8.33
0.92
1.15
1.15
0.236
4.67
-0.35
-0.12
0.58
0.118
5.67
0.00
0.23
PG
6.0
6.0
6.0
0.00
0.000
6.00
0.11
0.35
PM
4.0
7.0
6.0
1.53
0.354
5.67
0.00
0.23
PQ
3.0
3.0
3.0
0.00
0.000
3.00
-0.93
-0.69
PR
9.0
9.0
11.0
1.15
0.236
9.67
1.38
1.62
PV
8.0
8.0
8.0
0.00
0.000
8.00
0.80
1.04
Q
4.0
5.0
4.0
0.58
0.118
4.33
-0.47
-0.23
QC
^ 4.0
4.0
5.0 v
0.58
0.118
4.33
-0.47
-0.23
QJ
fliillplili
13IPIISP1I
QP
4.0
4.0
5.0
0.58
" 0.118
4.33
-0.47
^ -0.23
QQ
4.0
6.0
5.0
1.00
0.236
5.00
-0.24
0.00
QT
7.0
13.0
14.0
3.79
0.827
11.33
1.96
2.19
QU
7.0
9.0
11.0
2.00
0.473
9.00
1.15
1.39
QW
9.0
10.0
11.0
1.00
0.236
10.00
1.50
1.73
QX
6.0
5.0
6.0
0.58
0.118
5.67
0.00
0.23
QZ
4.0
4.0
4.0
0.00
0.000
4.00
-0.58
•0.35
R
5.0
6.0
4.0
1.00
0.236
5.00
-0.24
0.00
• = No data submitted
0 3 Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
IT a Above control limit
3 Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 7/18
Gross Alpha
Lab Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
KB
RD
RE
Wim
4.0
5.0
5.0
4.0
6.0
6.0
RG
3.0
4.0
RH
lllsllliii
RI
4.0
6.0
RJ
6.0
7.0
RR
4.0
4.0
RU
2.0
2.0
RV
6.0
6.0
RW
6.0
6.0
RZ
wawwaaww
' S "
5.0
5.0
SC
4.0
5.0
SD
5.0
5.0
SF
4.0
5.0
SI
5.0
5.0
SL
6.0
5.0
SM
3.0
3.0
piNl
so
6.0
5.0
SR
4.0
5.0
ss
5.0
5.0
su
4.0
4.0
sw
sssppis:
sx
5.0
6.0 ~
sz
4.0
4.0
T
4.0
3.0
5.0
8.0
5.0
% v
3.0
5.0
8.0
4.0
2.0
6.0
8.0
w?
5.0
5.0
4.0
3.0
5.0
4.0
3.0
6.0
3.0
5.0
4.0
iiiiis
5.0
3.0
5.0
TC
•'¦S; yK'I
5|:'f
liPllfp
TD
7.0
7.0
8.0
TE
4.0
4.0
4.0
TH
8.0
8.0
7.0
TI
12.0
7.0
9.0
TL
8.0
6.0
6.0
TN
5.0
4.0
5.0
TQ
4.0
5.0
4.0
TW
5.0
7.0
4.0
TY
6.0
6.0
6.0
U
6.0
5.0
6.0
UA
24.0 26.0
21.0
UE
5.0
5.0
5.0
UG
ayMragfs
UN
3.0
3.0
UP
7.0
8.0
8.0
0.58
1.53
0.58
0.58
1.00
1.00
0.00
0.00
0.00
1.15
0.00
0.58
0.58
1.00
0.00
1.00
0.00
0.58
1.00
0.00
0.00
0.58
0.58
1.00
0.58
0.00
0.58
2.52
1.15
0.58
0.58
1.53
0.00
0.58
2.52
0.00
sipi
0.00
0.58
0.118
0.354
0.118
4.33
6.33
-0.47
0.23
5.33 -0.12
-0.23
0.46
0.12
0.118 3.33 -0.81 -0.58
0.236 5.00 -0.24 0.00
0.236 7.00 0.46 0.69
0.000 4.00 -0.58 -0.35
0.000 2.00 -1.27 -1.04
0.000 6.00 0.11 0.35
0.236 6.67 0.34 0.58
iiliiir
0.000
0.118
0.118
0.236
0.000
0.236
0.000
0.118
0.236
0.000
0.000
f- 'jiv;
Is
5 00
4.67
4.67
4.00
5.00
5.00
3.00
MS
5.67
4.00
5.00
4.00
0.118
5.33
0.118
3.67
0.236
4.00
illiiisi
0.118
'733""
0.000
4.00
0.118
7.67
0.591
9.33
0.236
6.67
0.118
4.67
0.118
4.33
0.354
5.33
0.000
6.00
0.118
5.67
0.591
23 67
0.000
5.00
0.000
3.00
0.118
7.67
-0.24
-0.35
-0.35
-0.58
-0.24
-0.24
-0.93
¦§?
0.00
-0.58
-0.24
-0.58
-0.12
-0.70
-0.58
0.00
-0.12
-0.12
-0.35
0.00
0.00
-0.69
ppm
0.23
-0.35
0.00
-0.35
0.12
-0.46
-0.35
0.23
-0.93
0.69
• a No data submitted
0 = Insufficient data
TAG SYMBOLS
Determined to be an outlier
Above control limit
Below control limit
-------
8/18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
UQ
4.0
4.0
4.0
0.00
UY
lllltillf
VA
SfSlllilS
vc
lllillliill
«giiiii
VG
4.0
3.0
3.0
0.58
VH
:2§**-"5f2S
VI
10.0
9.0
15.0
3.21
VJ
4.0
5.0
4.0
0.58
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.000
4.00 -0.58
VM
VO
VT
4.0
9.0
5.0
12.0
4.0
12.0
0.58
1.73
0.118 3.33 -0.81
0.709 11.33 1.96
0.118 4.33
0.118
0.354
-0.35
HHI
-0.58
VX
w
WD
6.0
7.0 7.0
isiiifpiiiiii
m8mim$W8S&
mmmrn
0.58
mn*
IHPlf
0.118
IMi
6.67
HMUi
WE
8.0
6.0
7.0
L00
0.236
7.00
WF
3.0
4.0
2.0
1.00
0.236
3.00
WH
7.0
6.0
7.0
0.58
0.118
6.67
X
6.0
8.0
4.0
2.00
0.473
6.00
Z
5.0
5.0
6.0
0.58
0.118
5.33
0.69
0.69
0.58
0.35
0.12
|t£p
' •:
¦ *.<
gi«
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.00
DM
4.00
T
4.33
BK
2.00
RU
4.00
SU
4.33
BB
2.00
EV
4.00
SR
4.33
BA
3.00
WF
4.00
SF
4.67
¦ TN
3.00
UN
4.00
RR
4.67
SD
3.00
SM
4.00
QZ
4.67
SC
3.00
PQ
4.00
JN
4.67
P
3.33
VG
4.00
HP
4.67
OX
3.33
RG
4.00
BG
4.67.
L
3.33
OS
4.33
VO
4.67
JM
3.33
OF
4.33
VJ
4.67
JE
3.33
LR
4.33
TQ
4.67
EN
3.33
KE
4.33
RB
4.67
CX
3.33
K
4.33
QP
4.67
AE
3.33
JG
4.33
QC
5.00
UE
3.33
EO
4.33
Q
5.00
ss
3.33
CO
4.33
MQ
5.00
SL
3.67
SZ
4.33
HL
5.00
SI
3.67
NK
4.33
FN
5.00
S
3.67
BO
4.33
E
5.00
RI
3.67
AF
4.33
DO
5.00
R
4.00
UQ
4.33
CG
5.00
QQ
4.00
TE
4.33
CA
5.00
NT
• s No data submitted
0 3 Insufficient data
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U s Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 9/18
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Taj*
Lab
5.00
NO
5.67
CS
7.00
AL
5.00
NJ
5.67
AW
7.33
TD
5.00
N
6.00
X
7.33
NB
5.00
MF
6.00
TY
7.33
KH
5.00
JQ
6.00
RV
7.33
JS
5.00
IC
6.00
PG
7.67
UP
5.00
HK
6.00
MV
7.67
TH
5.00
m
6.00
KT
7.67
FJ
5.00
GT
6.00
JY
7.67
CE
5.00
EL
6.00
GQ
7.67
BL
5.00
DT
6.00
DH
8.00
PV
5.00
CK
6.00
CQ
8.00
M
5.00
CJ
6.00
AR
8.33
OY
5.00
BM
6.00
AP
8.67
LT
5.00
BC
6.33
RD
8.67
FL
5.00
AN
6.33
J
9.00
QU
5.33
Z
6.33
IE
9.00
DZ
5.33
TW
6.33
EB
9.00
AJ
5.33
sx
6.33
BH
9.33
11
5.33
RE
6.33
AU
9.33
OB
5.33
ID
6.67
WH
9.33
DS
5.33
I
6.67
W
9.33
DD
5.33
GZ
6.67
TL
9.67
PR
5.33
C
6.67
RW
10.00
QW
5.67
U
6.67
KX
11.00
VT
5;67
SO
6.67
DB
11.00
KC
5.67
QX
6.67
BN
11.33
VI
5.67
PM
6.67
AZ
11.33
QT
5.67
PB
6.67.
AK
11.67
NA
5.67
JP
6.67
A
12.00
OA
5.67
ER
7.00
WE
12.33
DE
5.67
D
7.00
RJ
16.67
X
MY
7.00
O
23.67
X
UA
% responding labs Frequency distribution
i r i i i i i i ¦ i » ¦
-6-4-2 0+2+4+4
Normalized deviation of the mean from the known value
• s No data submitted TAG SYMBOLS It — Above control limit
0 3 Insufficient data x s Determined to be an outlier II a Below control limit ,
-------
'
10 / 18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995
V ——
Gross Alpha
% responding labs Frequency distribution
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 11 /18
=*v
Gross Beta Statistical Summary 198 Participants
The known value of this nuclide is 5.0 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 13.7; the warning regions are 0.0 to 0.0 and 10.8 to 13.7
31 (15.7 %) Failed to respond
10(5.1 %) Outliers'
Statistic
. ¦v •
¦ * V ^
»* ¦
. 148(74.7 %) Within all limits
Respondents
9(4.5 %) In warning zone
but within control
Non-outliers
Mean
9.97
Grand Avg 6.62
Std. Dev.
29.48
1.93
Variance
869.10
3.74
% Coef. of Var.
295.81
29.20
% deviation of mean from known value
99.32
32.48
Norm. dev. of mean from known value
0.17
0.84
Median
6.33
6.33
% deviation of median from known value
26.67
26.67
Norm. dev. of median from known value
0.05
0.69
10(6.0 %) More than 3 norm. S.D
9(5.4 %) Between 2 and 3 norm. S.D.
, 126(75.4 %) Within 1 norm. S.D.
of known value
22(13.2 %) Between 1 and 2 norm. S.D.
-------
12/18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995
Gross Beta
Lab
Res. 1
Exper. Rng anal Normalized deviation
^ R68- 3 Sigma (R + SR) Average (grand-avg) (known) Tag
A
AE
AF
AH
BW
6.0
5.0
6.0
6.0
4.0
8.0
11.0
4.0
5.0
2.89
0.58
1.53
0.591
0.118
0.354
7.67 0.36 0.92
4.33 -0.79 -0.23
6.33 -0.10 0.46
AJ
6.0
6.0
2.0
2.31
0.473
4.67
-0.68
-0.12
AK
9.0
8.0
8.0
0.58
0.118
8.33
0.59
1.15
AL
6.0
6.0
7.0
0.58
0.118
6.33
-0.10
0.46
AN
9.0
10.0
10.0
0.58
0.118
9.67
1.05
1.62
AP
7.0
5.0
7.0
1.15
0.236
6.33
-0.10
0.46
AR
9.0
9.0
7.0
1.15
0.236
8.33
0.59
1.15
AU
7.0
6.0
5.0
1.00
0.236
6.00
-0.22
0.35
AW
7.0
7.0
6.0
0.58
0.118
6.67
0.01
0.58
AZ
5.0
5.0
5.0
0.00
0.000
5.00
-0.56
0.00
BA
6.0
5.0
6.0
0.58
0.118
5.67
-0.33
0.23
BB
6.0
6.0
6.0
0.00
0.000
6.00
-0.22
0.35
BC
4.0
4.0
3.0
0.58
0.118
3.67
-1.02
-0.46
BG
5.0
4.0
5.0
0.58
0.118
4.67
-0.68
-0.12
BH
7.0
7.0 _
_ _ 7.0
0.00
0.000
7.00
0.13
0.69
BI
iPiiBI
ijlllMElia,
?mwM
BK
6.0
3.0
5.0
1.53
0.354
4.67
-0.68
-0.12
BL
7.0
7.0
6.0
0.58
0.118
6.67
0.01
0.58
BM
5.0
5.0
5.0
0.00
0.000
5.00
-0.56
0.00
BN
5.0
6.0
5.0
0.58
0.118
5.33
-0.45
0.12
BO
7.0
8.0
7.0
0.58
0.118
7.33
0.25
0.81
still™!
C
6.0
6.0
CA
5.0
4.0
CE
6.0
7.0
CG
2.0
6.0
CJ
5.0
6.0
CK
8.0
11.0
CO
12.0
11.0
CP
V V
CQ
5.0
6.0
CS
7.0
6.0
CX
13.0
5.0
D
6.0
9.0
DB
8.0
10.0
DD
3.0
6.0
DE
6.0
6.0
DG
iilppl
DH
5.0
8.0
DM
5.0
5.0
DO
5.0
6.0
DS
7.0
7.0
6.0
5.0
5.0
7.0
7.0
9.0
12.0
0.00
0.58
1.00
2.65
1.00
1.53
0.58
0.000
0.118
0.236
0.591
0.236
0.354
0.118
6.00
4.67
6.00
5.00
6.00
9.33
11.67
7.0
6.0
6.0
8.0
10.0
4.0
7.0
1.00
0.58
4.36
1.53
•1.15
0.236
0.118
0.945
0.354
0.236
8.0
6.0
6.0
9.0
1.53
0.354
0.58
0.118
;^v
IPililS
1.73
0.354
0.58
0.118
0.58
0.118
1.15
0.236
TAG SYMBOLS
mmm
0.35
-0.12
0.35
0.00
0.35
1.50
2.31
llliPilS®
• :
-0.22
0.35
-0.10
0.46
0.48
1.04
0.36
0.92
0.94
1.50
-0.79
-0.23
-0.10
0.46
0.13
0.69
-0.45
0.12
-0.33
0.23
0.36
0.92
• = No data submitted
0 = Insufficient data
x ^ Determined to be an outlier
IT s Above control limit
il 3 Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 13/18
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
DT
6.0
6.0
6.0
DZ
11.0
10.0
12.0
E
6.0
6.0
6.0
EB
7.0
6.0
5.0
EL
6.0
6.0
5.0
EN
11.0
10.0
12.0
EO
6.0
8.0
9.0
Exper.
Sigma
Rnganal
(R + SR)
Normalized deviation
Average (grand-avg) (known) Tag
0.00
1.00
0.00
1.00
0.58
1.00
1.53
0.000
0.236
0.000
0.236
0.118
0.236
0.354
6.00
-0.22
0.35
11.00
1.52
2.08
6.00
-0.22
0.35
6.00
-0.22
0.35
5.67
-0.33
0.23
11.00
1.52
2.08
7.67
0.36
0.92
EV
Iew
FJ 38.0 58.0
iKL' 31.0 31*0
FN 7.0 6.0
36.0 12.17
30.0 0.58
0.118
44.00
30.67
6.67
12I95-
iSMy
0.01
6.0 7.0 0.58 0.118 6.33
7.0 7.0 7.0 0.00 0 000 7.00
4.0 0.58 0.118 3.67
3.0
KC
¦. : . w!, J
19.0
-«y sw.'Wttrffic--; &
4.0
0.118
0.236
0.000
0.591
0.118
0.118
0.118
0.591
0.000
0.236
Hi
0.118
0.118
0.473
0.354
0.118
0.118
0.354
!?; 18.0 1;00 0.pl
GZ
hm
HI
11.0
no
12.0
0.58
HK
12.0
10.0
11.0
1.00
HL
5.0
5.0
5.0
0.00
HP
7.0
6.0
11.0
2.65
I
5.0
5.0
6.0
0.58
IC
6.0
7.0
7.0
0.58
ID
6.0
6.0
1.0
0.58
IE
11.0
9.0
6.0
2.52
J
6.0
6.0
6.0
0.00
JE
6.0
8.0
8.0
1.15
JG
20.0
* * t %
. 13:0
4.73
JM
9.0
8.0
8.0
0.58
JN
5.0
6.0
6.0
0.58
JP
10.0
7.0
6.0
2.08
JQ
6.0
9.0
8.0
1.53
JS
9.0
10.0
10.0
0.58
JY
7.0
6.0
6.0
0.58
K
7.0
6.0
9.0
1.53
0.13
-1.02
0.69
-0.46
11.33
1.63
2.19
11.00
1.52
2.08
5.00
-0.56
0.00
8.00
0.48
1.04
5.33
-0.45
0.12
6.67
0.01
0.58
6.33
-0.10
0.46
8.67
0.71
1.27
6.00
-0.22
0.35
7.33
0.25
0.81
14.67;;:
^3;35
8.33
0.59
1.15
5.67
-0.33
0.23
7.67
0.36
0.92
7.67
0.36
0.92
9.67
1.05
1.62
6.33
-0.10
0.46
7.33
0.25
0.81
X-
fvtf-V-V
KE
5.0
6.0
6.0
0.58
0.118
5.67
-0.33
0.23
KH
10.0
4.0
7.0
3.00
0.709
7.00
0.13
0.69
KT
4.0
5.0
7.0
1.53
0.354
5.33
-0.45
0.12
KX
7.0
7.0
5.0
1.15
0.236
6.33
-0.10
0.46
L
7.0
7.0
8.0
0.58
0.118
7.33
0.25
0.81
• 3 No data submitted
0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft s Above control limit
JJ s Below control limit
-------
14/18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995
Gross Beta
Lab Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
LF
LL
LR
LT
to -
MA
MF
MQ
MV
MY
N
NA
NB
NE
7.0
4.0
m
8.0
13.0
9.0
9.0
7.0
6.0
9.0
218.0
8.0
5.0
aaMmMHit
6.0
1.00
0.236
7.00
0.13
0.69
7.0
1.53
0.354
5.33
-0.46
0.12
64.0
2.66
0.691
66.00
20.22
oirnm
*9mm
9.0
1.00
0.236
8.00
048
1.04
12.0
0.58
0.118
12.67
2.09
2.66
10.0
1.00
0.236
9.00
0.82
1.39
10.0
0.58
0.118
9.67
1.05
1.62
18.0
5.69
1.570
13.33
2.32
2.89
6.0
0.00
0.000
6.00
-0.22
0.35
10.0
0.58
0.118
9.33
0.94
1.50
688.0
266.86
104.863
.380.00
129.34
• fi9.90
NJ
5.0
6.0
6.0
0.58
0.118
5.67
-0.33
0.23
NK
7.0
7.0
5.0
1.15
0.236
6.33
-0.10
0.46
NO
7.0
10.0
14.0
3.51
0.827
10.33
1.28
1.85
NT
6.0
6.0
7.0
0.58
0.118
6.33
-0.10
0.46
O
7.0
6.0
7.0
0.58
0.118
6.67
0.01
0.58
/y ^
, . - . ....WffSS.w
OA
13.0
OB
12.0
10.0
11.0
1.00
OF
4.0
5.0
6.0
1.00
OS
7.0
7.0
7.0
0.00
OX
7.0
6.0
5.0
1.00
OY
4.0
3.0
6.0
1.53
P
4.0
4.0
4.0
0.00
PB
5.0
5.0
6.0
0.58
PE
Mm
wtemmm
igpjg-p!
PG
7.0
6.0 "
6.0
*7*0.58*
PM
8.0
10.0
13.0
2.52
PQ
6.0
5.0
6.0
0.58
PR
6.0
6.0
6.0
0.00
PV
5.0
6.0
8.0
1.53
Q
5.0
7.0
7.0
1.15
QC
6.0
5.0
5.0
0.58
QJ
QP
QQ
1M
QU
QW
QX
QZ
R
5.0
6.0
26.0
4.0
8.0
7.0
6.0
8.0
6.0
7.0
5.0
8.0
7.0
6.0
8.0
4.0
7.0
k*j5-X5xǤ
7.0
7.0
7.0
6.0
6.0
1.00
0.58
3.06
1.53
0.58
0.00
0.00
1.15
0.591
0.236
0.236
0.000
0.236
0.354
0.000
0.118
0.118
0.591
0.118
0.000
0.354
0.236
0.118
0.236
0.118
0.709
0.354
0.118
0.000
0.000
0.236
11.00
5.00
7.00
6.00
4.33
4.00
5.33
2.79
1.52
-0.56
0.13
-0.22
-0.79
-0.91
-0.45
Blllil
6.33
10.33
5.67
6.00
6.33
6.33
5.33
5.00
6.67
5.33
7.67
7.00
6.00
7.33
IMiillli
-0.10
1.28
-0.33
-0.22
-0.10
-0.10
-0.46
!W>¥JW»y-
-0.56
0.01
-0.46
0.36
0.13
-0.22
0.25
2.08
0.00
0.69
0.35
-0.23
-0.35
0.12
0.46
1.85
0.23
0.35
0.46
0.46
0.12
0.00
0.58
111
jsfej
0.12
0.92
0.69
0.35
0.81
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U 3 Below control limit
-------
'
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 15/18
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
KB
5.0
5.0
5.0
0.00
0.000
5.00
-0.56
0.00
RD
7.0
6.0
8.0
1.00
0.236
7.00
0.13
0.69
RE
210 1
20.0
:yy-"QJ58;:
0.118
20.67
TlOU.
.jfiaBFst,
RF
% *•
iSligift
v;.'; -
/ "V - t* '
RG
6.0
6.0
QJQ
0.00
0.000
6.00
-0.22
0.35
RH
v ft •" f> »¦
RI
5.0
2.0
3.0.
1.53
0.354
3.33
-1.14
-0^58
RJ
7.0
6.0
6.0
0.58
0.118
6.33
-0.10
0.46
RR
7.0
6.0
6.0
0.58
0.118
6.33
-0.10
0.46
RU
5.0
6.0
5:0
0.58
0.118
5.33
-0.45
0.12
RV
6.0
8.0
7.0
1.00
0.236
7.00
0.13
0.69
RW
7.0
7.0
6.0
0.58
0.118
6.67
0.01
0.58
RZ
vuwxs- afumx-
ifllifill
mmpmm
1MMM
S
7.0
8.0
7.0
0.58
0.118
7.33
0.25
0.81
sc
5.0
4.0
5.0
0.58
0.118
4.67
-0.68
-0.12
SD
4.0
4.0
4.0
0.00
0.000
4.00
-0.91
-0.35
SF
7.0
6.0
5.0
1.00
0.236
6.00
-0.22
0.35
SI
5.0
5.0
5.0
0.00
0.000
5.00
-0.56
0.00
SL
7.0
6.0
6.0
0.58
0.118
6.33
-0.10
0.46
SM
2.0
2.0
2.0
0.00
0.000
2.00
-1.60
-1.04
SN.
PSSBPi
* \f-r» yPti
•*•.¦> i
j • .'K v • ¦¦¦••• w.rr "
SO
8.0
9.0
7.0
1.00
0.236
8.00
0.48
1.04
SR
3.0
6.0
6.0
1.73
0.354
5.00
-0.56
0.00
ss
6.0
5.0
6.0
0.58
0.118
5.67
-0.33
0.23
su
6.0
7.0
5.0
100
0.236
6.00
-0.22
0.35
jsw
illlgil
jiliBggiSg
sx
6.0
7.0
7.0
0.58
0.118
6.67
0.01
0.58
sz
1.0
2.0
3.0
1.00
0.236
2.00
-1.60
-1.04
T
4.0
5.0__
4.0
0.58
0.118
4.33
-0.79
-0.23
TC
>•
, „ " &
liPPSplf
SUPf!!;
mil®m
TD
5.0
4.0
4.0
0.58
0.118
4.33
-0.79
-0.23
TE
7.0
3.0
6.0
2.08
0.473
5.33
-0.45
0.12
TH
6.0
6.0
6.0
0.00
0.000
6.00
-0.22
0.35
TI
8.0
7.0
7.0
0.58
0.118
7.33
0.25
0.81
TL
6.0
5.0
5.0
0.58
0.118
5.33
-0.45
0.12
TN
5.0
7.0
8.0
1.53
0.354
6.67
0.01
0.58
TQ
8.0
6.0
4.0
2.00
0.473
6.00
-0.22
0.35
TW
4.0
3.0
3.0
0.58
0.118
3.33
-1.14
-0.58
TY
7.0
7.0
8.0
0.58
0.118
7.33
0.25
0.81
U
6.0
7.0
7.0
0.58
0.118
6.67
0.01
0.58
UA
6.0
6.0
7.0
0.58
0.118
6.33
-0.10
0.46
UE
8.0 ^
8.0
8.0
0.00
0.000
8.00
0.48
1.04
UG
l' .. •
mmmmm<
IKfelli
">v V
mmmm
" ¦
¦ *
UN
7.0
6.0
9.0
1.53
0.354
7.33
0.25
0.81
UP
8.0
9.0
11.0
1.53
0.354
9.33
0.94
1.50
• =
No data submitted
TAG SYMBOLS
It a Above control limit
La-
Insufficient data
X 3
Determined to be an outlier
11 s Below control limit ^
-------
16 /18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995
Gross Beta
Lab Res. 1
Res. 2
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
UQ
UY
VA
vc
VG
VH
VI
VJ
VM
VO
VT
vx
w
WD
WE
WF
X
Z
70 6.0 6.0 0.58 0.118 6.33 -0.10 0.46
70 7.0 6.0 0.58 0.118 6.67 0.01 0.58
'• -w ¦' /- »:1 s*--'-t'-;" ' ™
50 4.0 4.0 0.58 0.118 4.33 -0.79 -0.23
1.15 0.236
3.0
6.0
gUM
7.0
12.0
6.0
3.0
6.0
*
6.0
i5.o:
5.0
6.0
"
0.00
0.000
6.0
6.0
15.0
7.0
3.67
6.00
SliifiiX
-0.46
0.35
0.58
1.73
0.58
0.118
0.364
0.118
6.33 -0.10 0.46
14.00 .
?
6.33
-0.10
0.46
11.0
11.0
11.0
0.00
0.000
11.00
1.52
2.08
10.0
13.0
9.0
2.08
0.473
10.67
1.40
1.96
8.0
7.0
7.0
0.58
0.118
7.33
0.25
0.81
5.0
6.0
6.0
0.58
0.118
5.67
-0.33
0.23
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.00
SZ
5.00
OF
5.67
DO
2.00
SM
5.00
HL
5.67
BA
3.33
TW
5.00
CG
6.00
VJ
3.33
RI
5.00
BM
6.00
TQ
3.67
VI
5.00
AZ
6.00
TH
3.67
GT
5.33
TL
6.00
SU
3.67
BC
5.33
TE
6.00
SF
4.00
SD
5.33
RU
6.00
RG
4.00
P
5.33
QU
6.00
QZ
4.33
VG
5.33
QC
6.00
PR
4.33
TD
5.33
PB
6.00
OX
4.33
T
5.33
LT
6.00
N
4.33
OY
5.33
KT
6.00
J
4.33
DD
5.33
I
6.00
EB
4.33
AE
5.33
DM
6.00
E
4.67
SC
5.33
BN
6.00
DT
4.67
CA
5.67
-
Z
6.00
CQ
4.67
BK
5.67
SS
6.00
CJ
4.67
BG
5.67
PQ
6.00
CE
4.67
AJ
5.67
NJ
6.00
C
5.00
SR
5.67
KE
6.00
BB
5.00
SI
5.67
JN
6.00
AU
5.00
RB
5.67
EV
6.33
W
5.00
QP
5.67
EL
6.33
VO
• a No data submitted
0 s Insufficient data
TAG SYMBOLS
Determined to be an outlier
1T s Above control limit
U s Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995 17/18
-
—— *
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tajr
Lab
Average
Tae
Lab
6.33
UQ
7.00
RD
8.33
AK
6.33
UA
7.00
QX
8.67
IE
6.33
SL
7.00
OS
9.00
MQ
6.33
RR
7.00
LR
9.33
UP
6.33
RJ
7.00
KH
9.33
NA
6.33
Q
7.00
GQ
9.33
DB
6.33
PV
7.00
DH
9.33
CK
6.33
PG
7.00
BH
9.67
MV
6.33
NT
7.33
X
9.67
JS
6.33
NK
7.33
UN
9.67
AN
6.33
KX
7.33
TY
10.33
PM
6.33
JY
7.33
TI
10.33
NO
6.33
ID
7.33
S
10.67
WF
6.33
GE
7.33
R
11.00
WE
6.33
DE
7.33
L
11.00
OB
6.33
CS
7.33
K
11.00
HK
6.33
AP
7.33
«IE
11.00
EN
6.33
AL
7.33
BO
11.00
DZ
6.33
AF
7.67
QW
11.33
HI
6.67
UY
7.67
JQ
11.67
CO
6.67
U
7.67
JP
12.67
MF
6.67
TN
7.67
EO
13.33
MY
6.67
SX
7.67
DS
14.00
X
VT
6.67
RW
7.67
D
14.67
X
OA
6.67
QQ
7.67
A
14.67
X
JG
6.67
o
8.00
UE
19.00
X
KC
6.67
IC
8.00
SO
20.67
X
RE
6.67
FN
8.00
MA
21.67
X
QT
6.67
BL
8.00
HP
30.67
X
FL
6.67
AW
8.00
CX
44.00
X
FJ
7.00
RV
8.33
JM
65.00
X
M
8.33
AR
380.00
X
NB
4
% responding labs Frequency distribution
20
10
0
Normalized deviation of the mean from the known value
• a No data submitted TAG SYMBOLS 11 a Above control limit
0 3 Insufficient data x a Determined to be an outlier II s' Below control limit
^
-------
: — *
18 / 18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Jan-1995
Gross Beta
% responding labs Frequency distribution
20-
10-
o
I i i I I m ¦T""*"~T T"~ T *". I * * I" I'
-6 -4 -2 0+2+4 +6
Normalized deviation of the mean from the grand average
-------
United States Office of Research and EPA 600/R-95/055
Environmental Protection Development April 1995
Agency Washington, DC 20460
&EPA Iodine in Water
Performance
Evaluation Study
A Statistical Evaluation of
the February 3, 1995 Data
-------
Iodine in Water
Performance Evaluation Study
February 3, 1995
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
\7
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Iodine in Water; February 3, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
. Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and It becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Iodine in Water, 3-Feb-1995
1/7
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the Bector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tagB has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the mmimnm of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/7 EMSL-LV Performance Evaluation: Iodine in Water, 3-Feb-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
-------
EMSL-LV Performance Evaluation: Iodine in Water, 3-Feb-1995
3/7
Iodine-131 Statistical Summary 110 Participants
The known value of this nuclide is 100.0 pCi/1 with an expected precision of 10.0; the control limits
are 82.7 to 117.3; the warning regions are 82.7 to 88.4 and 111.6 to 117.3
12(10.9 %) Failed to respond
. 86(78.2 %) Within all limits
N.
* \K
* \ V
* NI >W
• >k.
* x rv
~ N. J>K.
6(5.5 %) Outliers '* ^S^tTrT--r--^_
Statistic
Respondents
%%
* 6(5.5 %) In warning zone
but within control
Non-outliers
Mean
99.48
Grand Avg 98.53
Std. Dev.
13.07
5.59
Variance
170.73
31.28
% Coef. of Var.
13.14
5.68
% deviation of mean from known value
-0.52
-1.47
Norm. dev. of mean from known value
-0.04
-0.26
Median
98.67
98.50
% deviation of median from known value
-1.33
-1.50
Norm. dev. of median from known value
-0.10
-0.27
6(6.1 %) More than 3 norm. S.D.
; 63(64.3 %) Within 1 norm. S.D.
! of known value
¦ v.:-'-Sy -r-'y'.
I I >
I f
r
leQnpr ,
nBftIT 9
HBv ''tfnfrx&z*'**/:, •' v>' ^ >•?:
^ f **
| '
Hr - i •
¦FT # „ j
r J % A
. < J ' (i ¦? a or- %4 , „ - f# <•>! J
S%. ^ J a *£ ,s ,V t ^ *Av
~"4y'***$%& ¦>, *¦?$
6(6.1 %) Between 2 and 3 norm. S.D.'
23(23.5 %) Between 1 and 2 norm. S.D.
-------
(r-
4/7
EMSL-LV Performance Evaluation: Iodine in Water,
3-Feb-1995
^
r
Iodine-131
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
92.0
88.0
84.0
4.00
0.473
88.00
-1.82
-2.08
AF
107.0
107.0
110.0
1.73
0.177
108.00
1.64
1.39
AI
95.0
88.0
89.0
3.79
0.413
90.67
-1.36
-1.62
AJ
100.0
97.0
93.0
3.51
0.413
96.67
-0.32
-0.58
AK
97.0
98.0
98.0
0.58
0.059
97.67
-0.15
-0.40
AL
101.0
100.0
98.0
1.53
0.177
99.67
0.20
-0.06
AN
98.0
101.0
100.0
1.53
0.177
99.67
0.20
-0.06
AP
98.0
103.0
99.0
2.65
0.295
100.00
0.26
0.00
AU
100.0
96.0
96.0
2.31
0.236
97.33
-0.21
-0.46
AW
83.0
85.0
85.0
1.15
0.118
84.33
•2.46
-2.71
AY
101.0
99.0
100.0
1.00
0.118
100.00
0.26
0.00
AZ
94.0
95.0
96.0
1.00
0.118
95.00
-0.61
-0.87
BA
97.0
104.0
99.0
3.61
0.413
100.00
0.26
0.00
BC
83.0
94.0
85.0
5.86
0.650
87.33
-1.94
-2.19
BH
100.0
97.0
100.0
1.73
0.177
99.00
0.08
-0.17
BL
85.0
102.0
93.0
8.50
1.008
93.33
-0.90
-1.15
BM
95,0
99.0
98.0
2.08
0.236
97.33
-0.21
-0.46
BO
93.0
102.0
97.0
4.51
0.532
97.33
-0.21
-0.46
C
102.0
99.0
100.0
1.53
0.177
100.33
0.31
0.06
CA
101.0
102.0
94.0
4.36
0413
99.00
0.08
-0.17
CE
-1, -V
CJ
87.0
87.0
91.0
2.31
0.236
88.33
-1.77
-2.02
CP
97.0
98.0
101.0
2.08
0.236
98.67
0.02
-0.23
CQ
97.0
99.0
100.0
1.53
0.177
98.67
0.02
-0.23
CX
99.0
106.0
95.0
5.57
0.650
100.00
0.26
0.00
D
97.0
108.0
94.0
7.37
0.827
99.67
0.20
-0.06
DD
107.6
105.0
105.0
1.15
0.118
105.67
1.24
0.98
DE
90.0
90.0
91.0
0.58
0.059
90.33
-1.42
-1.67
DL
90.0
94.0
94.0
2.31
0.236
92.67
-1.01
-1.27
DM
99.0
98.0
103.0
2.65
0.295
100.00
0.26
0.00
DT
98.0
94.0
99.0
2.65
0.295
97.00
-0.26
-0.52
DY
99.0
98.0
103.0
2.65
0.295
100.00
0.26
0.00
E
95.0
96.0
99.0
2.08
0.236
96.67
-0.32
-0.58
EB
103.0
99.0
102.0
2.08
0.236
101.33
0.49
0.23
EL
99.0
101.0
101.0
1.15
0.118
100.33
0.31
0.06
EX
162.0
1830
136.0
23.90
4.383
157.00
10*13
. 9.87 x"
EZ
106.0
1160
99.0
8.54
1.008
10700
1.47
1.21
FK
lisiiillll
FL
97.0
103.0
97.0
3.46
0.354
99.00
0.08
-0.17
FU
94.0
90.0
101.0
5.57
0.650
95.00
-0.61
-0.87
GE
89.0
90.0
87.0
1.53
0.177
88.67
-1.71
-1.96
GI
103.0
95.0
107.0
6.11
0.709
101.67
0.54
0.29
HJ
99.0
89.0
91.0
5.29
0.591
93.00
-0.96
-1.21
HK
95.0
97.0
98.0
1.53
0.177
96.67
-0.32
-0.58
HP
106.0
102.0
104.0
2.00
0.236
104.00
0.95
0.69
• =
No data submitted
TAG SYMBOLS
ft a Above control limit
0 s
Insufficient data
x =
Determined to be an outlier
U s Below control limit
>j
-------
EMSL-LV Performance Evaluation: Iodine in Water,
3-Feb-1995
^
5/7
Iodine-131
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
I
97.0
97.0
101.0
2.31
0.236
98.33
-0.03
-0.29
IC
107.0
101.0
107.0
3.46
0.354
105.00
1.12
0.87
J
94.0
96.0
97.0
1.53
0.177
95.67
-0.50
-0.75
JR
14.0
17.0
19.0
2.52
0.295
16.67
¦;IIu743
X
JS
97.0
92.0
95.0
2.52
0.295
94.67
-0.67
-0.92
JY
114.0
110.0
101.0
6.66
0.768
108.33
1.70
1.44
K
103.0
103.0
103.0
0.00
0.000
103.00
0.78
0.52
KL
99.0
97.0
99.0
1.15
0.118
98.33
-0.03
-0.29
KX
94.0
96.0
98.0
2.00
0.236
96.00
-0.44
-0.69
L
89.0
91.0
95.0
3.06
0.354
91.67
-1.19
-1.44
LF
100.0
95.0
97.0
2.52
0.295
97.33
-0.21
-0.46
LT
::
;r'^';'s:T
yiy' ' 7
M
95.0
98.0
95.0
1.73
0.177
96.00
-0.44
-0.69
MA
94.0
97.0
94.0
1.73
0.177
95.00
-0.61
-0.87
MP
106.0
104.0
108.0
2.00
0.236
106.00
1.29
1.04
MQ
93.0
99.0
95.0
3.06
0.354
95.67
-0.50
-0.75
MV
114.0
114.0
114.0
0.00
0.000
114.00
2.68
2.42
N
103.0
101.0
99.0
2.00
0.236
101.00
0.43
0.17
NJ
-* ¦
..... ..
mm
9 *
NZ
93.0
90.0
89.0
2.08
0.236
90.67
-1.36
-1.62
O
99.0
99.0
100.0
0.58
0.059
99.33
0.14
-0.12
OA
109.0
103.0
110.0
3.79
0.413
107.33
1.53
1.27
OB
108.0
1050
104.0
2.08
0.236
105.67
1.24
&98_
PB
•
^SPPIiif
/ 9 '
PE
107.0
101.0
102.0
3.21
0.354
103.33
0.83
0.58
PV
88.0
91.0
97.0
4.58
0.532
92.00
-1.13
-1.39
PW
93.0
92.0
93.0
0.58
0.059
92.67
-1.01
-1.27
Q
94.0
95.0
93.0
1.00
0.118
94.00
-0.78
-1.04
QJ
98.0
1010
102.0
2.08
0.236
100.33
0.31
0.06
Qti
QX
mo
105.0
1020
1.53
0.177
103.67
0.89
0.64
QZ
\ -f <-¦
" '
*¦ n ^
> *
R
96.0
97.0
98.0
1.00
0.118
97.00
-0.26
-0.52
S
99.0
93.0
99.0
3.46
0.354
97.00
-0.26
-0.52
' sc
1420
150.0
122.0
14.42
2.245
138.00
6.84
658
x *
SF
90.0
95.0
97.0
3.61
0.413
94.00
-0.78
-1.04
SM
82.0
90.0
86.0
4.00
0.473
86.00
-2.17
-2.42
ss
104.0
104.0
105.0
0.58
0.059
104.33
1.01
0.75
sv
97.0
94.0 _
102.0
4.04
0.473
97.67
-0.15
-0.40
sw
sz
104.0
104.0
104.0
0.00
0.000
104.00
0.95
0.69
TC
102.0
108.0
111.0
4.58
0.532
107.00
1.47
1.21
TD
96.0
101.0
100.0
2.65
0.295
99.00
0.08
-0.17
TE
1?70
99.0
117.0
9.02
1.120
107.67
1.58
1.33
TH
- -
* " ¦S'
""" . A
f* • *
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
0 =
V-
Insufficient data
X 3
Determined to be an outlier
= Below control limit
-------
6
6/7
EMSL-LV Performance Evaluation: Iodine in Water, 3-Feb-1995
^
Iodine-131
-
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
n
107.0
105.0
105.0
1.15
0.118
105.67
1.24
0.98
127.0
123.0
110.0
8.89
1.008
120.00
3.72
3.46
X
TQ
J; y/:~:
• *,
U
82.0
110.0
86.0
15.14
2.245
92.67
-1.01
-1.27
UC
130.0
134.0
138.0
4.00
0.473
134.00
6.14
> 6.89;
X
UE
99.0
97.0
98.0
1.00
0.118
98.00
-0.09
-0.35
UN
109.0
102.0
103.0
3.79
0.413
104.67
1.06
0.81
UP
105.0
107.0
109.0
2.00
0.236
107.00
1.47
1.21
uw
99.0
94.0
98.0
2.65
0.295
97.00
-0.26
-0.52
UY
101.0
99.0
103.0
2.00
0.236
101.00
0.43
0.17
VA
95.0
98.0
94.0
2.08
0.236
95.67
-0.50
-0.75
VC
108.0
107.0
104.0
2.08
0.236
106.33
1.35
1.10
VG
99.0
97.0
100.0
1.53
0.177
98.67
0.02
-0.23
VM
97.0
100.0
98.0
1.53
0.177
98.33
-0.03
-0.29
VN
116,0
119.0
121.0
2.52
0.295
118.67
3.49
3.23
px.'C
VQ <
•¦4 ' s, '
< ' ^
.pSilliil.
* X
VX -
lilllpiillll
A
w
99.0
88.0
94.0
5.51
0.650
93.67
-0.84
-1.10
X
96.0
99.0
94.0
2.52
0.295
96.33
-0.38
-0.64
z
105.0
100.0
112.0
6.03
0.709
105.67
1.24
0.98
Data sorted by Laboratory Averag
:e
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
16.67
X
JR
95.00
FU
98.33
VM
84.33
AW
95.00
AZ
98.33
KL
86.00
SM
95.67
VA
98.33
I
87.33
BC
95.67
MQ
98.67
VG
88.00
A
95.67
J
98.67
CQ
88.33
CJ
96.00
M
98.67
CP
88.67
GE
96.00
KX
99.00
TD
90.33
DE
96.33
X
99.00
FL
90.67
NZ
96.67
HK
99.00
CA
90.67
AI
96.67
E
99.00
BH
91.67
L
96.67
AJ
99.33
O
92.00
PV
97.00
UW
99.67
D
92.67
U
97.00
S
99.67
AN
92.67
PW
97.00
R
99.67
AL
92.67
DL
97.00
DT
100.00
DY
93.00
HJ
97.33
LF
100.00
DM
93.33
BL
97.33
BO
100.00
CX
93.67
W
97.33
BM
100.00
BA
94.00
SF
97.33
AU
100.00
AY
94.00
Q
97.67
SV
100.00
AP
94.67
JS
97.67
AK
100.33
QJ
95.00
MA
98.00
UE
100.33
EL
• s No data submitted
TAG SYMBOLS
ft a Above control limit
[ 0 = Insufficient data
X
= Determined to be an outlier
<11 = Below control limit
4/
-------
V
Iodine-131
EMSL-LV Performance Evaluation: Iodine in Water, 3-Feb-1995
^
7/7
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
100.33
C
104.33
SS
107.00
EZ
101.00
UY
104.67
UN
107.33
OA
101.00
N
105.00
IC
107.67
TE
101.33
EB
105.67
z
108.00
AF
101.67
GI
105.67
TI
108.33
JY
103.00
K
' 105.67
OB
114.00
MV
103.33
PE
105.67
DD
118.67
X
VN
103.67
QX
106.00
MP
120.00
X
TL
104.00
SZ
106.33
VC
134.00
X
UC
104.00
HP
107.00
UP
138.00
X
SC
107.00
TC
157.00
X
EX
% responding labs
Frequency distribution
10-
0 |
-6
4
Jalfl
llljl" lifli
I I . ^
-4 -2 0 +2
Normalized deviation of the mean from the known value
¦ .i
T
+6
responding labs Frequency distribution
10"
* j|Iii
-i 1 ¦¦!¦¦¦¦¥¦¦¦¦¥¦¦¦ , ¦ i ¦ ¦ i 1 r™
-4 -2 0 +2 44 +6
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS It s Above control limit
0 s Insufficient data x = Determined to be an outlier il s Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA 600/R-95/062
May 1995
Uranium-Radium in Water
Performance
Evaluation Study
A Statistical Evaluation of the
February 10, 1995 Data
0593RS094 cov-062
-------
Uranium-Radium in Water
Performance Evaluation Study
February 10, 1995
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Uranium-Radium In Water; February 10,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which Is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
1/20
The following pages consist of septate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the rna-gimum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
- *'
2/20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
-------
^==========^=======^==========1
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 3/20
Uranium (Natural) Statistical Summary 155 Participants
The known value of this nuclide is 25.5 pCi/1 with an expected precision of 3.0; the control limits
are 20.3 to 30.7; the warning regions are 20.3 to 22.0 and 29.0 to 30.7
34(21.9 %) Failed to respond
, 92(59.4 %) Within all limits
11(7.1 %) Outliers '
5(3.2 %) Out of control
but not an outlier
13(8.4 %) In warning zone
but within control
Statistic Respondents Non-outliers
Mean
27.80
Grand Avg 24.74
Std. Dev.
24.49
2.46
Variance
599.86
6.03
% Coef. of Var.
88.11
9.93
% deviation of mean from known value
9.00
-2.99
Norm. dev. of mean from known value
0.09
-0.31
Median
25.07
25.00
% deviation of median from known value
-1.70
-1.96
Norm. dev. of median from known value
-0.02
-0.20
60(49.6 %) Within 1 norm. S.D.
of known value
17(14.0 %) More than 3 norm. S.D.
31(25.6 %) Between 1 and 2 norm. S.D.
-------
4/20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
Uranium (Natural)
>
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
24.7
25.1
25.8
0.56
0.217
25.20
0.27
-0.17
AE
24.9
24.7
23.4
0.81
0.295
24.33
-0.23
-0.67
AF
26.0
25.8
27.1
0.70
0.256
26.30
0.90
0.46
AH
23.0
22.8
22.6
0.20
0.079
22.80
¦1.12
-1.56
AI
lltt® ^
liiliiilllllli
AJ
26.7
28.2
26.8
0.84
0.295
27.23
1.44
1.00
AK
27.0
28.1
28.7
0.86
0.335
27.93
1.85
1.40
AL
25.5
27.6
26.4
1.05
0.413
26.50
1.02
0.58
AP
23.7
25.1
26.4
1.35
0.532
25.07
0.19
-0.25
AR
21.0
23.9
22.1
1.46
0.571
22.33
-1.39
-1.83
AU
AW
23.9
25.1
25.4
0.79
0.295
24.80
0.04
-0.40
AZ
26.9
26.2
26.4
0.36
0.138
26.50
1.02
0.58
BA
24.9
26.0
25.4
0.55
0.217
25.43
0.40
-0.04
BC
25.0
25.1
24.2
0.49
0.177
24.77
0.02
-0.42
BG
25.0
29.8
26.0
2.53
0.945
26.93
1.27
0.83
BG
24.3
24.0
22.7
0.85
0.315
23.67
-0.62
-1.06
BG
25.7
24.0
25.3
0.89
0.335
25.00
0.15
-0.29
BH
36.8
37.0
33.0
2.25
0.788
36.60
6.27
V* &_??*•*¦*'•& -^rrc
-;:6.83!f^x:;S
BK
23.4
22.4
23.1
0.51
0.197
22.97
-1.02
-1.46
BM
13.6
13.3
12.4
0.62
0.236
13<10.
BN
25.5
25.6
24.9
0.38
0.138
25.33
0.34
-0.10
BO
23.8
23.4
24.0
0.31
0.118
23.73
-0.58
-1.02
C
28.2
26.5
24.9
1.65
0.650
26.53
1.04
0.60
CA
25.0
25.0
24.7
0.17
0.059
24.90
0.09
-0.35
CE
25.4
25.6
24.9
0.36
0.138
25.30
0.33
-0.12
CG
24.0
25.0
26.0
1.00
0.394
25.00
0.15
-0.29
CJ
24.0
25.0
25.0
0.58
0197
24.67
-0.04
-0.48
CK
lllilBlii
•
CM
25.2
25.2
23.8
0.8 i
0.276
24.73
0.00
-0.44
CO^
<¦*¦%' *?A" ¦
CS
20.8
20.9
20.6
0.15
0.059
20.77
-2.29
-2.73
CX
25.9
27.7
26.4
0.93
0.354
26.67
1.11
0.67
D
25.7
24.9
25.0
0.44
0.158
25.20
0.27
-0.17 _ _
DB
37.0 .
38.0
36.0
1.00
0.394
37.00
7.08
DE
30.3
30.3
30.4
0.06
0.020
30.33
3.23
2.79
DO
24.0
28.3
23.7
2.57
0.906
25.33
0.34
-0.10
DP
™1^5I|
Hit
•
DT
23.6
17.8
20.3
2.91
1.270
20.57
-2.41
-2.85
DZ
26.0
28.2
30.3
2.15
0.847
28.17
1.98
1.54
E
23.1
23.5
22.8
0.35
0.138
23.13
-0.93
-1.37
EB
23.6
23.3
23.7
0.21
0.079
23.53
-0.69
-1.14
EO
iiilllili
IpfpIIW
sipiissiPP
•
EP
ER
a
• =
No data submitted
TAG SYMBOLS
It s Above control limit
Insufficient data
x =
Determined to be an outlier
JJ s Below control limit
-------
"V
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 5 / 20
Uranium (Natural)
"\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tng
Fd
c:\r- 30.6
38.3
35.0
• > 3.86
1.983 ;
34.63
5«71;" :**
FN;.
• : -.87.'oi:5;
87.0
79.4
t 1.945 r:
84.47
* «,' ' ,, >¦. 'r"£>&
34.48 .
FP
r/
-
' - '¦ .-..V ., ' .. . ^ . , . , ^
. >, "
FZ
26.0
26.0
25.3
0.40
0.138
25.77
0.59
0.15
GN
25.0
25.0
23.7
0.75
0.256
24.57
-0.10
-0.54
GQ
27.4
28.9
30.3
1.45
0.571
28.87
2.38
1.94
HK
25.4
24.6
25.3
0.44
0.158
25.10
0.21
-0.23
HL
21.8
22.4
22.5
0.38
0.138
22.23
-1.45
-1.89
HP
23.6
23.7
24.0
0.21
0.079
23.77
-0.56
-1.00
I
21.0
24.1
30.3
4.74
2.583
25.13
0.23
-0.21
ID
32.1
27.9
32.1
2.42
0.827
30.70
3.44
3.00
IE
25.1
25.1
24.8
0.17
0.059
25.00
0.15
-0.29
J
25.5
25.9
25.2
0.35
0.138
25.53
0.46
0.02
JE
24.6_
20.0
... 23.4 _
2.39 ^
0.906
22.67
-1.20
-1.64
3s JgH
^1M?
'v,
/ < "" wv '*•'. • 1 •*•?.. :.
JP
42.5
43.4
43.2
l C "0mh
o.iTr
43.03
JS
22.6
22.6
22.8
0.12
0.039
_ 22.67
-1.20
-1.64
JX
iiiiaiii
S$ft-*4* ^v1
JY
23.4
23.6
22 8
0.42
0.158
23.27
-0.85
-1.29
K
23.4
24.1
21.4
1.40
0.532
22.97
-1.02
-1.46
KH
24.8
25.2
25.2
0.23
0.079
25.07
0.19
-0.25
*v\£
Jpiiifliff
L
25.0
25.3
25.6
0.30
0.118
25.30
0.33
-0.12
LH
IiT
39.9
36.1
38.0
1.90
0.748
38.00
iMMW
7.66
*4':;
LZ
20.8
21.0
22.0
0.64
0.236
21..27
-2.0°
-2.44
M
IPilpsWWSiSffS.
MY
jgjllg
I
N
23.4
24.8
22.2
1.30
0.512
23.47
-0.73
-1.17
NA
18.0
19.0
21.0
1.53
0.591
19.33
-3.12
-3.56 U
NH
25.9
26.1
26.5
0.31
0.118
26.17
0.83
0.38
NJ
24.0
24.0
22.0
1.15
0.394
23.33
-0.81
-1.25
NK
24.3
25.3
23.5
0.90
0.354
24.37
-0.21
-0.65
NO
26.0
26.4
26.8
0.40
0.158
26.40
0.96
0.52
NT
25.1
25.1
25.1
0.01
0.000
25.10
0.21
-0.23
OB
25.6
25.6
25.4
0.12
0.039
_ _ 25.53
0.46
0.02
OF
< A. A ( ¦>
„ v ^ ; ^ <,
OS
23.1
23.0
22.7
0.21
0.079
22.93
-1.04
-1.48
OX
21.5
20.4
20.3
0.67
0.236
20.73
-2.31
-2.75
OY
26.5
26.2
27.2
0.51
0.197
26.63
1.09
0.65
P
21.8
21.8
14.2
4.39
1.945
19.27
-3.16
-3.60 Jl
PB
27.3
25.7
27.6
1.02
0.374
26.87
1.23
0.79
PG
26.7
25.3
26.3
0.72
0.276
26.10
0.79
0.35
• =
No data submitted
TAG SYMBOLS
It s Above control limit
0 3
Insufficient data
X =
Determined to be an outlier
U s Below control limit
^ —'J
-------
6/20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
PQ
25.0
24.9
25.8
0.49
0.177
25.23
0.29
-0.15
PV
18.0
21.4
22.4
2.31
0.866
20.60
-2.39
-2.83
PW
23.8
29.2
24.2
3.01
1.120
25.73
0.58
0.13
FX
Q
27.7
28.3
27.8
0.32
0.118
27.93
1-85
1.40
QQ
27.2
25.4
24.0
1.60
0.630
25.53
0.46
0.02
QU
26.3
29.9
33.8
3.75
1.908
30.00
3.04
2.60
QX
13.8J
142
. 14*1
0.32
0.118
13.97
-6.22
-6.66
QZ
•R
27.2
27.3
27.2
0.06
0.020
27.23
1.44
1.00
.: AV
RD
20.0
20.9
20.7
0.47
0.177
20.53
-2.43
-2.87
RF
IwlMilSSp
iSllHISSffit
RG
25.1
25.8
26.9
0.91
0.354
25.93
0.69
0.25
RK
24.9
22.6
27.4
2.40
0.945
24.97
0.13
-0.31
RL
K$t§l
RP
25.9
25.9
24.9
0.58
0.197
25.57
0.48
0.04
RR
25.8
24.2
24.7
0.82
0.315
24.90
0.09
-0.35
RV
24.8
25.7
25.7
0.52
0.177
25.40
0.38
-0.06
RW
21.9
21.9
22.3
0.23
0.079
22.03
-1.56
-2.00
RX
46;0
40.0
42.0
2.52
0.984
42.33
10.16
\ *f f-r <¦> * "'»'*>* £
9.72
RZ
27.2
25.7
28.8
1.55
0.610
27.23
1.44
1.00
s
22.6
22.1
23.2
0.55
0.217
22.63
-1.21
-1.66
sc
25.5
24.2
27.1
1.45
0.571
25.60
0.50
0.06
SD
23.1
24.9
24.3
0.92
0.354
24.10
-0.37
-0.81
SF
23.3
23.3
23.3
0.01
0.000
23.30
-0.83
-1.27
SI
24.8
24.7
24.3
0.26
0.098
24.60
-0.08
-0.52
SL
25.0
25.7
30.0
2.71
0.984
26.90
1.25
0.81
SM
26.8
26.7
27.2
0.26
0.098
26.90
1.25
0.81
SO
21.7
21.8
22.2
0.26
0.098
21.90
-1.64
-2.08
ss
22.4
24.6
23.3
1.11
0.433
23.43
-0.75
-1.19
ST
24.6
24.1
24.6
0.29
0.098
24.43
-0.18
-0.62
SW
mmm
IIPIIIII
Billllgiill
sx
llilllliilil
'' ¦ • •'
sz
23.0
23.2
23.6
0.31
0.118
23.27
-0.85
-1.29
T
30.2
26.9
30.2
1.91
0.650
29.10
2.52
2.08
TD
27.8
28.3
28.2
0.26
0.098
28.10
1.94
1.50
TE
25.9
25.7
27.1
°.76
0.276
26.23
0.86
0.42
TH
•;v"; V- v
mmmmm
•• • ¦, -t-
TI
24.7
24.2
24.7
0.29
0.098
24.53
-0.12
-0.56
TL
21.5
21.2
21.1
0.21
0.079
21.27
-2.00
-2.44
TN -
- i' ,
c-;r Y'-
fgpllllt
TQ
25.2
28.9
24.9
2.23
0.788
26.33
0.92
0.48
TS
22.7
22.4
22.5
0.15
0.059
22.53
-1.27
-1.71
U
26.6
26.4
25.6
0.53
0.197
26.20
0.84
0.40
x
x
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
U s Below control limit
-------
f
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 7 / 20
Uranium (Natural)
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
nes. 2 Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tae
UE
23.3
22.2 24.1
0.95
0.374
23.20
-0.89 -1.33
UN
16.7
17.1 16.7
0.23
0.079
16.83
-4.56 -5.00 J1
UP
19-°
19.7 19.9
0.47
0.177
19.53
-3.00 -3.44 U
UQ
V * '
T ' - ' *
"¦ t ' '
J " *¦ ' - ¦¦«<,
!ISII1
w< « sjw- „r
US >
v '• • r -•• •* v
wmz
' * "' *
/}> *' V
'¦•"* ?¦"" ivH -!^'' ¦ •'
uw
26.8
27.3 26.4
0.45
0.177
26.83
1.21 0.77
12.2
]&ll§3
16.3 19.0
1.645
15.83
^.i4?£.;^vSi877nx^
VA
306 6
29t0 249.8
30.69
20.584
>-X 284.30 , ;v i49;86; ;il49l42'::' / x;
VG
26.4
25.4 26.4
0.58
0.197
26.07
0.77 0.33
VH
& fy* * ><< 'V, ^
IB®
<$
iliiltlliS'
VI
23.1
22.6 22.1
0.50
0.197
22.60
-1.23 -1.67
VK
'•&&f$>'ifWffi'iVSSi86£ SStBfSBMs-KiWW
piii
SPIllS
liSPiiltei
"
VT
¦•"'s t¦ Z \'{ ' :?¦*¦¦ 3
|§ff
llltfll
||
^ > '><; '' V
c-; . y. *"?.'<¦•.¦<• ,v',V, •
W
mmmmm
V >. ; "TSVxV#' #
-------
tr~ —
N,
8/20 EMSL-LV Performance Evaluation: Uranium-Radium in Water,
10-Feb-1995
Uranium (Natural)
Data sorted by Laboratory Averag
C«
Average Tag
Lab
Average Tag
Lab
Average
Tag
Lab
25.23
PQ
26.20
U
27.23
AJ
25.30
L
26.23
TE
27.93
Q
25.30
CE
26.30
AF
27.93
AK
25.33
DO
26.33
TQ
28.10
TD
25.33
BN
26.40
X
28.17
DZ
25.40
RV
26.40
NO
28.87
GQ
25.43
BA
26.50
AZ
29.10
T
25.53
QQ
26.50
AL
30.00
QU
25.53
OB
26.53
C
30.33
DE
25.53
J
26.63
OY
30.70
ID
25.57
RP
26.67
CX
31.23
IT
WG
25.60
SC
26.83
UW
34.63
X
FJ
25.73
PW
26.87
PB
35.60
X
BH
25.77
FZ
26.90
SM
37.00
X
DB
25.93
RG
26.90
SL
38.00
X
LT
26.07
VG
26.93
BG
42.33
X
RX
26.10
PG
27.23
RZ
43.03
X
JP
26.17
NH
27.23
QZ
84.47
X
FN
284.30
X
VA
% responding labs
Frequency distribution
10-
0J"i ¦ T-
- T.iilT lll^.lli
Mm -t ¦
+6
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10-
¦T ¦¦¦¦¦¦¦¦¦!¦¦ if ¦¦ rma ¦ i 1 ¦
-4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
• a No data submitted
(7\ ~j
TAG SYMBOLS
x s Determined to be an outlier
It s Above control limit
s Below control limit ,
-------
¦>.
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 9/20
Radium-226 Statistical Summary 153 Participants
The known value of this nuclide is 19.1 pCi/1 with an expected precision of 2.9; the control limits
are 14.1 to 24.1; the warning regions are 14.1 to 15.7 and 22.5 to 24.1
40(26.1 %) Failed to respond
90(58.8 %) Within all limits
3(2.0 %) Outliers '
8(5.2 %) Out of control
but not an outlier
12(7.8 %) In warning zone
but within control
Statistic Respondents Non-outliers
Mean
18.84
Grand Avg 18.62
Std. Dev.
3.67
2.71
Variance
13.48
7.32
% Coef. of Var.
19.49
14.53
% deviation of mean from known value
-1.38
-2.54
Norm. dev. of mean from known value
-0.07
-0.18
Median
18.83
18.83
% deviation of median from known value
-1.40
-1.40
Norm. dev. of median from known value
-0.07
-0.10
61(54.0 %) Within 1 norm. S.D.
of known value
11 (9.7 %) More than 3 norm. S.D.
12(10.6 %) Between 2 and 3 norm. S.D.
-------
f
^
10/20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
[ Radium-226
1
Lab
Res. 1
Res. 2
Exper.
Rng anal
• Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
18.1
16.1
18.4
1.25
0.468
17.53
-0.65
-0.94
AE
17.4
16.8
17.2
0.31
0.122
17.13
-0.89
-1.17
AF
18.3
18.4
18.4
0.06
0.020
18.37
-0.15
-0.44
AH
Itlltlf
IlllilWil#
lilllllili
'>-*,' .a: *\"
AI
q-.;, i-v
mmmm
¦Ml
AJ
18.1
19.6
20.1
1.04
0.407
19.27
0.39
0.10
AK
19.9
20.4
19.1
0.66
0.265
19.80
0.71
0.42
AL
17.1
17.7
17.7
0.35
0.122
17.50
-0.67
-0.96
AP
19.8
19.1
20.1
0.51
0.204
19.67
0.63
0.34
AR
MfPf
"'"t :
AU
15.5
17.0
17.9
1.21
0.489
16.80
-1.08
-1.37
AW
9.4
10.7
10.1
0.65
0.265
10.07
-5.11
-5.40 U
AZ
14.3
18.6
17.1
2.18
0.876
16.67
-1.16
-1.45
BA
18.2
18.3
18.2
0.06
0.020
18.23
-0.23
-0.52
BC
17.9
19.1
18.6 _
0.60
0.244
18.53
-0.05
-0.34
BO
lllillf
wmmm
' 4
iIf:;p:
_
>^¦5^"' ' " ^, r,
BH
16.0
15.3
18.3
1.57
0.611
16.53
-1*24
-1.53
BK
18.5
18.2
18.2
0.17
0.061
18.30
-0.19
-0.48
BM
17.5
17.7
17.5
0.12
0.041
17.57
-0.63
-0.92
BN
18.9
18.9
19.2
0.17
0.061
19.00
0.23
-0.06
BO
19.0
19.8
19.6
0.42
0.163
19.47
0.51
0.22
C
19.6
20.2
20.6
0.50
0.204
20.13
0.91
0.62
CA
19.6
19.1
18.8
0.40
0.163
19.17
0.33
0.04
CE
18.0
13.5
15.9
2.25
0.917
15.80
-1.68
-1.97
CG
18.8
20.2
20.4
0.87
0.326
19.80
0.71
0.42
CJ
21.0
21.0
20.0
0.58
0.204
20.67
1.22
0.94
CK
IMMy
MB
ffMMtt
CM
CO
SilKIili
CS
19.3
20.2
21.1
0.90
0.367
20.20
0.95
0.66
CX
IMCTSgSMM
ilplilplil
f^^Rlllllf
IIIPIPS
D
SffigpWpgSgW
DB
17.6
18.0
17.3
0.35
0.143
17.63
-0.59
-0.88
DE
19.8
19.8
19.8
0.00
0.000
19.80
0.71
0.42
DO
igmmrmmM
_
'.':¦ s . ¦*?.:.ottu'^r rl-'.j-
• • : ¦*•%¦.?. ••..••; i- ¦ ..*;.*
DP
..." ' " ' w
-J
#
DT
19.0
17.2
17.0
1.10
0.407
17.73
-0.53
-0.82
DZ
21.0
20.7
19.9
0.57
0.224
20.53
1.15
0.86
E
20.5
20.1
19.8
0.35
0.143
20.13
0.91
0.62
EB
18.6
19.1
19.2
0.32
0.122
18.97
0.21
-0.08
EO
22.5
20.2
21.4
1.15
0.468
21.37
1.64
1.35
EP
17.9
17.3
17.4
0.32
0122
17.53
-0.65
-0.94
ER
lBfl(B
MMM
¦V> \ TV -"A
¦
FJ
.*• if J' Pffi,".' 'f *0?
FN
18.7
17.0
17.6
0.86
0.346
17.77
-0.51
-0.80
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
I 0-
Insufficient data
x =
Determined to be an outlier
<11 s Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 11 / 20
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
FP
FZ
18.2
12.8
18.0
3.06
1.190
16.33
-1.36
-1.65
• >
GN
18.5
19.1
18.2
0.46
0.183
18.60
-0.01
-0.30
GQ
20.8
21.4
20.3
0.55
0.224
20.83
1.32
1.04
HK
18.6
19.6
19.1
0.50
0.204
19.10
0.29
0.00
HL
16.2
16.5
18.9
1.48
0.550
17.20
-0.85
-1.13
HP
18.8
19.5
20.6
0.91
0.367
19.63
0.61
0.32
I
26.0
24.1
17.1
4.69
2.548
22.40
2.26
1.97
ID
13.3^^
14.8
13.9
0.75
0.306
14.00
-2.76
-3.05
I
IE
£;Ssi;8i£^
MMISHHI
• ¦
J
17.0
19.1
18.4
1.07
0.428
18.17
-0.27
-0.56
JE
21.7
22.5
21.1
0.70
0.285
21.77
1.88
1.59
JG
21.2
20.0
21.5
0.79
0.306
20.90
1.36
1.08
JK
§§§t||§§^
<{ •> + *'V
• ft
JN
Smmv&immem
lipi
>¦¦¦¦*¦.. *3
• .rifr.
•
JP
•
JS
24.0
23.9
21.8
1.24
0.448
23.23
2.76
2.47
JX
19.1
18.8
20.1
0.68
0.265
19.33
0.43
0.14
JY
20.2
19.9
21.2
0.68
0.265
20.43
1.09
0.80
K
14.2
14.3
9.9
2.51
0.896
12.80
-3.47
-3.76
KH
18.7
18.4
17.9
0.40
0.163
18.33
-0.17
-0.46
KL
22.7
22.5
19.5
1.79
0.652
21.57
1.76
1.47
L
17.4
17.4
17.8
0.23
0.081
17.53
-0.65
-0.94
LH
LT
LZ
M
MY
N
NA
NH
NJ
NK
NO
NT
OB
OF
OS
OX
OY
P
PB
PG
P®
PV
mmmm
41.2
20.0
19.6
19.3
22.9
20.0
35.7
20.1
21.9
18.6
20.1
20.0
19.8 20.2
18.9 19.3
17.0 14.9
19.1
13.5
22.6
20.2
18.0
•jij.'H'A;'/?
19.0
19.5
13.2
22.0
20.9
19.9
v-z K'StfvW'. 'w&v
17.4
IBB!!
43.3
20.0
17.3
19.2
WHS
21.1
21.0
illlll
20.5
19.7
r1* 9.2 •*
15.8
19.4
13.0
22.3
19.9
18.6
S,* *
160
pipiii*
3.92
0.06
2.30
pgHMPPp
¦Hi
0.38
1.42
0.58
0.35
0.40
0.15
1.05
0.21
0.25
0.30
0.51
0.97
Hill®
1.50
2.044
0.020
0.937
0.143
0.570
0.204
0.143
0.163
0.061
0.428
0.081
0.102
0.122
0.204
0.387
hmj
¦ •
^ Vv :v^:
0.611
20.03
19.60
19.03
12.81
0.85
0.59
0.25
MMMi
21.37
20.33
mm*.
20.17
19.30
9.17
1.64
1.03
093
0.41
-5.64
15.90 , -1.62
0.43
19.33
13.23
22.30
20.33
18.83
-3.21
2.20
1.03
0.13
0.56
0.30
-0.04
1.35
0.74
PlpSsS
0.64
0.12
-6.93 x
-1.91
0.14
-3.50 U
1.91
0.74
-0.16
liPP
17.47
-0.69
-0.98
• a No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft = Above control limit
U a Below control limit
-------
12 / 20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PW
22.8
24.5
22.7
1.01
0.367
23.33
2.82
2.53
PX
Q
24.1
22.6
21.7
1.21
0.489
22.80
2.50
2.21
QJ
18.7
18.7
17.5
0.69
0.244
18.30
-0.19
-0.48
QQ
IlllllliISi
QU
16.2
16.2
19.1
1.67
0.591
17.17
-0.87
-1.15
QX
23.6
23.4
24.0
0.31
0.122
23.67
3.02
2.73
QZ
17.7
18.1
17.5
0.31
0.122
17.77
-0.51
-0.80
R
14.9
15.5
15.1
0.31
0.122
15.17
-2.06
-2.35
RD
18.5
18.2
18.4
0.15
0.061
18.37
-0.15
-0.44
RF
21.7
23.3
21.9
0.87
0.326
22.30
2.20
1.91
RK 14.2 15.9 15.1 0.85 0.346 15.07 2.12 -2.41
RV
13.2
16.5
16.1
'v>" ^ i
1.80
0.672
15.27
-2.00 -2.29
RW
17.2
16.5
16.3
0.47
0.183
16.67
-1.16 -1.45
RX
13.7
15.6
14.8
0.95
0.387
14.70
-2.34 -2.63
RZ
18.5
19.0
19.2
0.36
0.143
18.90
0.17 -0.12
S
19.7
20.1
20.2
0.26
0.102
20.00
0.83 0.54
sc
15.8
14.5
18.8
2.21
0.876
16.37
-1.34 -1.63
SD
16.2
17.3
17.3
0.64
0.224
16.93
-1.00 -1.29
SF
19.3
19.6
18.4
0.62
0.244
19.10
0.29 0.00
SI
14.4
14.8
17.9
1.92
0.713
15.70
-1.74 -2.03
Sir
jgiiqfB
v;
liggiw
' *' -'v '>- ' ! ¦? .
SM
15.5
15.0
15.1
0.26
0.102
15.20
-2.04 -2.33
SO
¦
ss
20.0
18.4
19.7
0.85
0.326
19.37
0.45 0.16
ST
19.3
19.5
19.4
0.10
0.041
19.40
0.47 0.18
sw
¦i
iiiiiiib
ms&Mmrn Mm
sx
17.7
19.0
18.3
0.65
0.265
18.33
-0.17 -0.46
sz
18.7
15.5
17.9
1.67
0.652
17.37
-0.75 -1.04
T
18.9
18.7
19.5
0.42
0.163
19.03
0.25 -0.04
TD
11.5
13.3
14.0
1.29
0.509
12.93
-3.39 -3.68 JJ
TP
17.1
16.8
18.2
0.74
0.285
17.37
-0.75 -1.04
TH
17.0
17.0
18.0
0.58
0.204
17 33
-0.77 -1.06
TI
18.3
18.2
18.8
0.32
0.122
18.43
-0.11 -0.40
TL
15.9
15.3
11.4
2.44
0.917
14.20
-2.64 -2.93
TN
20.3
23.3
23.1
1.68
0.611
22.23
2.16 1.87
TQ
18.4
21.2
22.0
1.89
0.733
20.53
1.15 0.86
TS
26.7
25.5
25.9
0.61
0.244
26.03
4.43 4.14 ft
U
18.1
14.0
10.3
3.90
2.121
14.13
-2.68 -2.97
UE
21.5
20.8
21.5
0.40
0.143
21.27
1.58 1.29
UN
17.9
18.3
20.8
1.57
0.591
19.00
0.23 -0.06
• a
No data submitted
TAG SYMBOLS
IT = Above control limit
0 3
Insufficient data
x =
Determined to be an outlier
Jj. = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 13 / 20
Radium-226
Lab
Res. 1
Exper.
Rug anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
UP
17.4
17.3
18.1
0.44
0.163
17.60
-0.61 -0.90
UQ
18.5
,18-9
19.1
°-31
0.122
18.83
0.13 -0.16
us -
y'4'.'
c V.,
UW
174
17.5
19.2
1.01
0.367
18.03
-0.35 -0.64
uz
¦Mff-
£I$1
VA
22.5
20.3
21.0
1.12
0.448
21.27
1.58 1.29
VG
25.1
23.2
27.8
2.31
0.937
25.37
4.03 3.74
it
VH
8.8
11.2
11.5
1.48
0.550
10.50
-4.85 -5.14
VI
18.2
18.5
17.8
0.35
0.143
18.17
-0.27 -0.56
VK
m
iPstmrnw
llilii
¦PlifWHirappW
'¦¦ ¦' ••••• •• ••
'mc^y
^PSIIilllli
w
18.8
17.0
18.6
0.99
0.367
18.13
-0.29 -0.58
wc
wo
WH
43.8
38.3
> #* '
12.6
x / •» •.
16.65
11.200
•
sRv ii?x-;&r.W£v
31.57
MM
wsxsm
21.1
22.8
21.3
0.93
0.346_
21.73
1.86 1.57
¦
§|igg|||:
fe-1 ¦;
liljSliPMMlli
•?*
Data sorted by Laboratory Averag
[«
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.17
X
OB
17.13
AE
18.33
SX
10.07
U
AW
17.17
QU
18.33
KH
10.50
U
VH
17.20
HL
18.37
RD
12.80
U
K
17.33
TH
18.37
AF
12.93
4
TD
17.37
TE
18.43
TI
13.23
U
OY
17.37
SZ
18.53
BC
14.00
U
ID
17.47
PV
18.60
GN
14.13
U
17.50
AL
18.83
UQ
14.20
TL
17.53
L
18.83
PG
14.70
KX
17.53
EP
18.90
RZ
15.07
RK
17.53
A
18.97
EB
15.17
R
17.57
BM
19.00
UN
15.20
SM
17.60
UP
19.00
BN
15.27
RV
17.63
DB
19.03
T
15.70
SI
17.73
DT
19.03
N
15.80
CE
17.77
QZ
19.10
SF
15.90
OF
17.77
FN
19.10
HK
16.33
FZ
18.03
UW
19.17
CA
16.37
SC
18.13
w
19.27
AJ
16.53
BH
18.17
VI
19.30
NT
16.67
RW
18.17
J
19.33
OX
16.67
AZ
18.23
BA
19.33
JX
16.80
AU
18.30
QJ
19.37
SS
16.93
SD
18.30
BK
19.40
ST
• = No data submitted
TAG SYMBOLS
It = Above control limit
0 s Insufficient data
x 3 Determined to be an outlier
U s Below control limit
'J
-------
14 / 20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tasr
Lab
19.47
BO
20.33
PB
21.73
X
19.60
M
20.33
NJ
21.77
JE
19.63
HP
20.43
JY
22.23
TN
19.67
AP
20.53
TQ
22.30
RF
19.80
DE
20.53
DZ
22.30
P
19.80
CG
20.67
CJ
22.40
I
19.80
AK
20.83
GQ
22.80
Q
20.00
S
20.90
JG
23.23
JS
20.03
LZ
21.27
VA
23.33
PW
20.13
E
21.27
UE
23.67
QX
20.13
C
21.30
VT
25.37
ft
VG
20.17
NO
21.37
NH
26.03
ft
TS
20.20
CS
21.37
EO
31.57
X
WC
21.57
KL
40.07
X
LT
% responding labs
ioi
Frequency distribution
¦B ^ Bill
-6
responding labs
-4 -2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
+4
+6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It a Above control limit
JJ- = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 15 / 20
Radium-228
Statistical Summary
153 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 5.0; the control limits
are 11.3 to 28.7; the warning regions are 11.3 to 14.2 and 25.8 to 28.7
46(30.1 %) Failed to respond ,
8(5.2 %) Outliers '
Statistic
94(61.4 %) Within all limits
Respondents
•• 5(3.3 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
21.10
9.22
84.92
43.67
5.51
0.12
19.93
-0.33
-0.01
Grand Avg 19.64
2.65
7.03
13.50
-1.80
-0.14
19.90
-0.50
-0.04
8(7.5 %) More than 3 norm. S.D.
5(4.7 %) Between 2 and 3 norm. S.D
74(69.2 %) Within 1 norm. S.D.
of known value
20(18.7 %) Between 1 and 2 norm. S.D.
-------
(r
^
16 / 20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
V
Radium-228
"
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average (grand-avg)
(known) Tag
A
20.0
21.8
22.6
1.33
0.307
21.47 0.63
0.51
AE
17.6
16.4
16.3
0.72
0.154
16.77 -1.00
-1.12
AF
19.3
19.7
19.4
0.21
0.047
19.47 -0.06
-0.18
AH
22.6
21.1
22.3
0.79
0.177
22.00 0.82
0.69
AI
19.0
19.4
19.4
0.23
0.047
19.27 -0.13
-0.25
AJ
21.8
21.4
21.7
0.21
0.047
21.63 0.69
0.57
AK
20.4
20.2
18.2
1.22
0.260
19.60 -0.01
-0.14
AL
24.9
24.6
23.5
0.74
0.165
24.33 1.63
1.50
AP
20.9
19.2
17.6
1.65
0.390
19.23 -0.14
-0.27
AE
AU
48
11.7
5.4
3.82
0.815
7.30 -4.27
4.40 x
AW
23.6
24.5
229
0.80
0.189
23.67 1.40
1.27
AZ
20.6
12.8
17.9
3.96
0.921
17.10 -0.88
-1.00
BA
20.4 .
19.0
20.5
0.84
0.177
19.97 0.11
-0.01
BC
18.7
19.4
193
0.38
0.083
19.13 -0.18
-0.30
BO
j'
BH
19.6
22.2
22 1
1.47
0.307
21.30 0.58
0.45
BK
18.3
22.5
21.4
2.18
0.496
20.73 0.38
0.25
BM
_ 21.1
20.8
20.3
0.40
0.095
20.73 0.38
0.25
BN
flRMR
BO
20.1
21.2
21.7
0.82
0.189
21.00 0.47
0.35
C
23.9
23.4
22.8
0.55
0.130
23.37 1.29
1.17
CA
18.3
17.7
21.5
2.04
0.449
19.17 -0.16
-0.29
CE
19.2
16.8
19.8
1.59
0.354
18.60 -0.36
-0.48
CG
4.2 ;
3.9 ¦
'• 2.7
0.79
0.177
3.60
• :-6.6«i%,\ xTv'
CJ
19.0
190
18.0
0.58
o.iis
18.67 -0.34
-0.46
CK
- ' , *
CM
' "*s~ • <-
*' ' ''rV '
CO
•
CS
14.4
15.3
13.5
0.90
0.213
14.40 -1.81
-1.94
CX
• £T J: 'P-'p- 'J: t
- -,'
®SHB|
•
D
y^ : ;*
lOMmMMSMl
•
DB
20.7
20.3
20.4
0.21
0.047
20.47 0.29
0.16
DE
22.4
22.4
22.5
006
0.012
22.43 0.97
0.84
DO
filfglllf
V f' , <• . " «• ' ' 4 >* ' " < , •¦ v ^ £
DP
p,
. v.-;
^ \ : /. ^
DT
19.4
20.8
20.7
0.78
0.165
20.30 0.23
0.10
DZ
17.1
18.9
20.0
^ 1.46
0.343
18.67 -0.34
-0.46
E
SliiMI®
liililiiisillii
EB
15.9
16.0
16.2
0.15
0.035
16.03 -1.25
-1.37
EO
15.8
16.3
16.1
0.25
0.059
16.07 -1.24
-1.36
EP
19.3
18.8
19.5
0.36
0.083
19.20 -0.15
-0.28
ER
"'s '
vs ^ 5 r ^ i''
Fj:
X
'0 wi
1 "> >, J yt
s ^ > * *
s, %
' V'
FN
16.0
15.9
14.8
0.67
0.142
15.57 -1.41
-1.54
• =
No data submitted
TAG SYMBOLS
1T = Above control limit
0 a
J- .
Insufficient data
X =
Determined to be an outlier U s Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 17/20
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
FP
: ''y I'-*i'
¦::'J ¦ ¦
FZ
20.0
29.9
11.8
9.06
3.168
20.57
0.32
0.20
GN
£
ilpllii
lllllllllB
' >*?'V ' ¦- • -'
GQ
12.6
11.9
12.3
0.35
0.083
12.27
-2.55
-2.68
HK
18.5
18.3
19.0
0.36
0.083
18.60
-0.36
-0.48
HL
17.8
17.8
18.7
0.52
0.106
18.10
-0.53
-0.66
HP
20.2
20.1
21.0
0.49
0.106
20.43
0.28
0.15
I
13.3
19.3
16.1
3.00
0.709
16.23
-1.18
-1.30
ID
21.0
26.4
23.5
2.70
0.638
23.63
1.38
1.26
IE
J
JE
JG
JK
JN
JP
JS
JX
JY
K
KH
KL
21.3
19.1
20.7
21.4
19.3
25.0
20.6
15.5
29.2
18.8
18.4
17.3
17.2
20.1
22.3
18.9
18.9
18.1
14.8
20.3
23.3
L 19.0 18.1
LU ;• •' r.-V •' - • <#; #|/,v r,-
M 22.0 21.0
MY
N 20.2 22.4
NA
NH 20.6 19.8
NJ 21.0 21.0
19.8
18.8
19.3
10.1
20.1
21.4
19.1
0.44
2.14
4.25
0.55
0.26
1.01
3.61
0.12
0.95
0.095
0.449
1.008
0.118
0.059
0.236
0.839
0.024
0.224
21.10
WmBBBBSk
,/> y'f>
19.17
18.70
18.23
14.03
20.17
22.33
22.0
21.1
*IP
21.9
21.0
0.55
tU <*v-
3.40
0.58
iliilil
1.n
1.06
0.00
0.118 18.73 -0.31 -0.44
'T-'tC'Sti'i/g*--' * ¦-. '/} "-Z'
0.118 21.67 0.70 0.58
0.260 21.23 0.55 0.43
0.248 20.77 0.39 0.27
0.000 21.00 0.47 0.35
NO
NT
OB
OF
OS
OX
OY
P
PB
19.1
20.0
19.7 20.1
21.3
19.9
1.11
0.20
0.260
0.047
20.13
19.90
0.17
0.09
0.05
-0.03
16.0
0.99
0.213
15.53 -1.42
-1.55
mmsm
, .. ^ ¦* ¦ i ¦/
lliBllllll
20.6
20.2
20.3
0.21
0.047
20.37 0.25
0.13
20.3
20.7
19.7
0.50
0.118
20.23 0.21
0.08
16.8
13.8
13.7
1.76
0.366
14.77 -1.69
-1.81
19.4
19.8
20.3
0.45
0.106
19.83 0.07
-0.06
,:»? vv
mmvm
1.50
0.354
17.73
-0.66
-0.79
• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft e Above control limit
JJ = Below control limit
-------
18/20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
Radium-228
Res. 2
Exper.
Rng anal
Normalized deviation
Lab Res. 1
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PW
18.1
17.0
17.2
0.59
0.130
17.43
-0.76
-0.89
PX
.•£v:3
MUM
* < '7,-v- ¦> • • > •
•
Q
15.4
19.2
21.1
2.90
0.673
18.57
-0.37
-0.50
QJ
19.9
17.5
20.4
i.55
0.343
19.27
-0.13
-0.25
QQ
'' ,' - * V
' V-
0
QU
12.7
if6
15.6
1.47
0.343
14.30
-1.85
-1.97
QX
39.8 -
40.5
40.0
0.36
0.083
40.10
7,09
6.96
X
QZ
171
17.5
17.0
0.26
0.059
17.20
-0.84
-0.97
R
p|||fe||
PlfllPpIllpi:
MHHH
- •-
w
RD
11.0
16.7
14.9
2.91
0.673
14.20
-1.88
-2.01
RF
21.1
21.8
23.2
1.07
0.248
22.03
0.70
RG
•
RK
57.4
62.2
66.0
2.60
0.614
64.87
12.20
12.08
X
.
RL
9
BP
'-A
RR
t^§§
I I
IwKitiMl
iilfll
' •
RV
22.6
23.4
24.1
0.75
0.177
23.37
1.29
1.17
RW
20.9
20.2
19.4
0.75
0.177
20.17
0.18
0.06
RX
19.9
21.5
20.0
0.90
0.189
20.47
0.29
0.16
RZ
18.8
19.1
18.9
0.15
0.035
18.93
-0.24
-0.37
s
19.0
18.9
19.4
0.26
0.059
19.10
-0.19
-0.31
sc
17.2
17.3
17.0
0.15
0.035
17.17
-0.86
-0.98
SD
19.6
14.9
22.0
3.61
0.839
18.83
-0.28
-0.40
SF
17.7
18.5
19.5
0.90
0.213
18.57
-0.37
-0.50
SI
17.4
20.0
17.4
1.50
0.307
18.27
-0.48
-0.60
sl Vv,
111181
llSillp
i$mm§m
X
liiiiitfcilto,
§¦§¦!¦
•
SM
20.5
21.1
20.0
0.55
0.130
20.53
0.31
0.18
SO
ss
ST
SW
sx
sz
T
TD
19.8
20.7
19.9 19.4 0.26
21.5 0.40
21.1
¦¦¦I
0.059
0.095
mi:*®??-
19.70
21.10
0.02
0.51
-0.10
0.38
20.2
35.3
21.7
36.8
18.5 24.3 2.98
42.3 38.0' 3.86
21.2 22.3 0.55
0.685 21.00
m
0.47
*¦¦¦¦¦¦
0.130
1.436
21.73
41.60
0.73
7.61
„.j
0.35
^11
0.60
7.48 x
TE
20.6
19.8
19.0
0.80
0.189
19.80
0.06
-0.07
TH
20.0
19.0
19.0
0.58
0.118
19.33
-0.11
-0.23
II
13.0
11.4
12.5
0.82
0.189
12.30
-2.54
-2.67
TL
20.4
22.6
18.5
2.05
0.484
20.50
0.30
0.17
TN
24.7
25.6
27.4
1.37
0.319
25.90
2.17
2.04
TQ
16.7
23.7
21.7
3.61
0.827
20.70
0.37
0.24
TS
23.9
18.6
20.3
2.71
0.626
20.93
0.45
0.32
U
16.7
23.1
20.0
3.20
0.756
19.93
0.10
-0.02
UE
20.4
21.4
19.6
0.90
0.213
20.47
0.29
0.16
UN
25.1
22.3
20.5
2.32
0.543
22.63
1.04
0.91
• =
No data submitted
TAG SYMBOLS
IT s Above control
0 = Insufficient data
x = Determined to be an outlier
II 2 Below control limit
-------
f(
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995 19 / 20
Radium-228
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
UP
25.5
22.0
20.9 2.40
0.543
22.80
1.09 0.97
UQ
24.3
24.9
24.4 0.32
0.071
24.53
1.70 1.57
US
uw
19.0
19.9
19.6 0.46
0.106
19.50
-0.05 -0.17
uz:
'?*
38
*'C* ' •
*' ¦" s " v' Kf -SS1' N-
*' ' A >
Vo •<>
Sgpf§v%?
•sfc
S
*
V (* l — - A
•
VT
21.3
23.5
26.5 2.61
0.614
23.77
1.43 1.30
VV
^ v
< M y
>¦¦9.:'^.?;^. mv V • few: '"
v A * f ^
• :¦¦
W
18.9
20.1
21.4 1.25
0.295
20.13
0.17 0.05
.
100:4
119.71
30.63
12.598
93.27
'W6;V-
'v 'f \\, , Vv
V • ^ •
WEt'S?
„ " i
y yjvy -:xss v.rs;'>: V'
VLA * * * s •. ^ s'y&X f" <
v* *v. V.
>
f|pg|
a i'
,*v'
X
18.4
19.2
22.2 2.00
0.449
19.93
0.10 -0.02
v.' f -/v- -
Z*'*¦-*"*-pf-
i"s,s-A. , ,N ? ' •• t
s VSC
vv£
Data sorted by Laboratory Averaf
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
3.60
X
CG
18.27
SI
19.70
SS
7.30
X
AU
18.57
SF
19.80
TE
12.27
GQ
18.57
Q
19.83
PB
12.30
TI
18.60
HK
19.90
NT
14.03
K
18.60
CE
19.93
X
14.20
RD
18.67
DZ
19.93
u
14.30
QU
18.67
CJ
19.97
BA
14.40
C S
18.70
JX
20.13
W
14.77
P
18.73
L
20.13
NO
15.53
OF
18.83
SD
20.17
RW
15.57
FN
18.93
RZ
20.17
KH
16.03
EB
19.10
S
20.23
OY
16.07
EO
19.13
BC
20.30
DT
16.23
I
19.17
JS
20.37
OX
16.63
VG
19.17
CA
20.43
HP
16.77
AE
19.20
EP
20.47
UE
17.10
AZ
19.23
AP
20.47
RX
17.17
SC
19.27
QJ
20.47
DB
17.20
QZ
19.27
AI
20.50
TL
17.43
PW
19.30
VH
20.53
SM
17.73
PV
19.33
TH
20.57
FZ
17.97
JE
19.47
AF
20.70
TQ
18.10
HL
19.50
UW
20.73
BM
18.23
JY
19.60
AK
20.73
BK
• 3 No data submitted
TAG SYMBOLS
It = Above control limit
0 a Insufficient data
x = Determined to be an outlier
11 s Below control limit
——
-------
20 / 20 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 10-Feb-1995
Radium-228
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tae
Lab
20.77
NH
21.67
M
23.77
VT
20.93
TS
21.73
T
24.33
AL
21.00
SX
22.00
AH
24.50
VI
21.00
NJ
22.03
RF
24.53
UQ
21.00
BO
22.33
KL
24.97
JG
21.10
ST
22.43
DE
25.90
TN
21.10
J
22.63
UN
35.03
X
LT
21.23
N
22.80
UP
37.87
X
SZ
21.30
BH
23.37
RV
40.10
X
QX
21.47
A
23.37
C
41.60
X
TD
21.63
AJ
23.63
ID
54.87
X
RK
,
23.67
AW
93.27
X
WC
% responding labs
Frequency distribution
10-
¦b
||LI^
~+6
-I—
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
104
o
m
JUilfll
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• s No data submitted TAG SYMBOLS It s Above control limit
0 a Insufficient data x a Determined to be an outlier 11 a Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA 600/R-95/059
April 1995
&EPA
Tritium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the March 10, 1995 Data
WW
0593RS094 cov-059
-------
Tritium in Water
Performance Evaluation Study
March 10, 1995
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Tritium In Water; March 10,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Tritium in Water, 10-Mar-1995 1/9
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits sure three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/9
EMSL-LV Performance Evaluation: Tritium in Water, 10-Mar-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand aver age is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
-------
EMSL-LV Performance Evaluation: Tritium in Water, 10-Mar-1995
3/9
Tritium Statistical Summary 186 Participants
The known value of this nuclide is 7435.0 pCi/1 with an expected precision of 744.0; the control limits
are 6144.2 to 8725.8; the warning regions are 6144.2 to 6573.8 and 8296.2 to 8725.8
21 (11.3 %) Failed to respond «.
4(2.2 %) Outliers •'
12(6.5 %) Out of control •
but not an outlier
Statistic
127(68.3 %) Within all limits
Respondents
* 22(11.8 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
7223.50
1020.24
1040885.03
14.12
•2.84
-0.21
7236.67
-2.67
-0.19
Grand Avg 7299.15
682.97
466446.40
9.36
-1.83
-0.20
7244.67
-2.56
-0.28
16(9.7 %) More than 3 norm. S.D.
22(13.3 %) Between 2 and 3 norm. S.D.
.94(57.0 %) Within 1 norm. S.D.
of known value
33(20.0 %) Between 1 and 2 norm. S.D.
-------
ff 4/9
EMSL-LV Performance Evaluation: Tritium in Water,
10-Mar-1995
Tritium
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
6250.0
6430.0
6340.0
90.00
0.143
6340.00
-2.23
-2.55
AE
7780.0
7660.0
7740.0
61.10
0.095
7726.67
1.00
0.68
AF
7113.0
7019.0
6862.0
126.81
0.199
6998.00
-0.70
-1.02
AH
7060.0
7030.0
7080.0
25.13
0.040
7056.67
-0.56
-0.88
AI
5040.0
5120.0
5030.0
49.35
0.071
5063.33
-5.21
-5.52
AJ
6042.0
5961.0
5912.0
65.66
0.103
5971.67
-3.09
-3.41
AK
7645.0
7838.0
7645.0
111.42
0.153
7709.33
0.95
0.64
AP
7418.0
7041.0
7205.0
189.03
0.299
7221.33
-0.18
-0.50
AU
7500.0
7000.0
7500.0
288.68
0.397
7333.33
0.08
-0.24
AW
6996.0
7017.0
7051.0
27.81
0.044
7021.33
-0.65
-0.96
AY
6890.0
6968.0
7217.0
170.78
0.260
7025.00
-0.64
-0.95
AZ
7742.0
7448.0
7327.0
213.42
0.329
7505.67
0.48
0.16
BA
7538.0
7653.0
7351.0
152.43
0.240
7514.00
0.50
0.18
BB
7030.0
7130.0
7400.0
191.41
0.294
7186.67
-0.26
-0.58
BC
7505.0
6024.0
6765.0
740.50
1.335
6764.67
-1.24
-1.56
BG
8700.0
8100.0
8500.0
305.51
0.476
8433.33
2.64
2.32
BI
7330.0
7300.0
6480.0
482.32
0.675
7036.67
-0.61
-0.93
BL
7134.0
7259.0
7124.0
75.23
0.107
7172.33
-0.30
-0.61
BM
8230.0
8100.0
8000.0
115.32
0.183
8110.00
1.89
1.57
BO
6230.0
6230.0
6130.0
57.75
0.079
6196.67
-2.57
-2.88
BW
6600.0
6700.0
6700.0
57.74
0.079
6666.67
-1.47
-1.79
C
7051.0
7438.0
7245.0
193.49
0.307
7244.67
-0.13
-0.44
CA
7360.0
7500.0
7520.0
87.18
0.127
7460.00
0.37
0.06
CC
S1IISIIR
Mfli
CE
7470.0
7480.0
7130.0
199.26
0.278
7360.00
0.14
-0.17
CG
8764.0
9768.0
9498.0
519.56
0.797
9343.33
4.76
4.44
It
CJ
7200.0
7000.0
7000.0
115.47
0.159
7066.67
-0.54
-0.86
CK
CM
^llig
&•
•
CO
ilHiM
ililllpilll
iiiiiiiiitif
IMMMMII
WHMi
' A
•
CP
7188.0
7202.0
7007.0
108.76
0.155
7132.33
-0.39
-0.70
CQ
6960.0
7160.0
7230.0
140.11
0.214
7116.67
-0.42
-0.74
CS
7390.0
7820.0
7800.0
242.69
0.341
7670.00
0.86
0.55
CX
7830.0
11300.0
11100.0
1948.24
4.343
10076.67
6.47
6.16
D
7270.0
6863.0
7236.0
225.80
0.323
7123.00
-0.41
-0.73
DD
• . - • -v
" '
\ ,> s
DE
7800.0
7850.0
7900.0
49.98
0.079
7850.00
1.28
0.97
DG
7260.0
5920.0
6480.0
673.00
1.122
6553.33
-1.74
-2.05
DH
7721.0
7251.0
7464.0
235.35
0.373
7478.67
0.42
0.10
DI
7120.0
7140.0
7090.0
25.13
0.040
7116.67
-0.42
-0.74
DL
7744.0
7655.0
7545.0
99.68
0.158
7648.00
0.81
0.50
DM
7090.0
6870.0
7130.0
140.01
0.206
7030.00
-0.63
-0.94
DT
7500.0
7500.0
7300.0
115.47
0.159
7433.33
0.31
0.00
E
7409.0
7752.0
7606.0
172.12
0.272
7589.00
0.67
0.36
EA
7910.0
7990.0
7900.0
49.37
0.071
7933.33
1.48
1.16
• H
No data submitted
TAG SYMBOLS
ft s Above control limit
0 3
^
Insufficient data
X 3
Determined to be an outlier
<11 s Below control limit
'J
-------
f,
EMSL-LV Performance Evaluation: Tritium in Water, 10-Mar-1995
^
5/9
r
Tritium
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
7030.0
7140.0
7480.0
234.59
0.357
7216.67
-0.19
-0.51
EL
72720
6934.0
6811.0
238-71
0.366
7005.67
-0.68
-1.00
EN
P&y:.-- ,::4
MlPflllf
EW
7016.0
7376.0
7027.0
204.75
0.286
7139.67
-0.37
-0.69
EX
6403.0
6504.0
6458.0
50.58
0.080
6455.00
-1.97
-2.28
FJ
61270
6059.0
5815.0
164.06
_ 0 248
6000.33
-3.02
-3.34
u
FK
X/' , * s
-
. '*.
v'--- „
I mm
*
' ; •'
FL
7052.0
7557.0
7262.0
253.69
0.401
7290.33
-0.02
-0.34
FU
7514.0
6936.0
6049.0
737.91
1.311
6833.00
-1.09
-1.40
' FZ^
I- 4900,0
4800 0
4700.0
~ 100 00
0.159
48do.do;
-5.82
WW*
GE
7625.0
7458.0
7517.0
84.70
0.133
7533.33
0.55
0.23
GQ
6490.0
6450.0
6500.0
26.46
0.040
6480.00
-1.91
-2.22
HI
7020.0
7027.0
7090.0
38.57
0.056
7045.67
-0.59
-0.91
HJ
7740.0
7700.0
7500.0
128.58
0.191
7646.67
0.81
0.49
HK
7519.0
7457.0
7389.0
65.04
0.103
7455.00
0.36
0.05
HP
7020.0
7030.0
7340.0
181.93
0.254
7130.00
-0.39
-0.71
HK
8114.0
8106.0
8172.0
36.07
0.052
8130.67
1.94
1.62
I
6846.0
6874.0
6937.0
46.65
0.072
6885.67
-0.96
-1.28
IC
7410.0
7481.0
7392.0
47.03
0071
7427.67
0.30
-0.02
n -
i ^ ' •-<" 's
'' V'
J
7219.0
7284.0
7207.0
41.46
0.061
7236.67
-0.15
-0.46
JE
7477.0
7816.0
7670.0
170.05
0.269
7654.33
0.83
0.51
J1
9400.0
9200.0
9600.0
200.00
0.318
9400.00
4.89
4.57
IT
JK
7380.0
7100.0
6960.0
213.85
0.333
7146.67
-0.35
-0.67
JM
7521.0
718?°
6744.0
389.59
0.617
7149.33
-0.35
-0.67
JN
ISjtlllPlSIf
f >>»
JP
7280.0
7235.0
7225.0
29.35
0.044
7246.67
-0.12
-0.44
JR
8167.0
8360.0
8258.0
96.54
0.153
8261.67
2.24
1.92
JS
7200.0
7380.0
7500.0
151.00
0.238
7360.00
0.14
-0.17
JY
7740.0
7480.0
7500.0
144.68
0.206
7573.33
0.64
0.32
K
7297.0
7673.0
8162.0
433.72
0.687
7710.67
0.96
0.64
KH
7344.0
7021.0
7044.0
180.22
0.256
7136.33
-0.38
-0.70
KX
7160.0
7060.0
7040.0
64.29
0.095
7086.67
-0.49
-0.81
L
6774.0
6694.0
6848.0
77.05
0.122
6772.00
-1.23
-1.54
LE
7290.0
6980.0
7010.0
170.99
0.246
7093.33
-0.48
-0.80
LF
- * „
LR
7030.0
6910.0
6970.0
60.02
0.095
6970.00
-0.77
-1.08
LT
5591.0
4853.0
6391.0
769.21
1.421
5611.67
-3.93
-4.24
11
M
7850.0
7800.0
7900.0
49.98
0.079
7850.00
1.28
0.97
MA
6631.0
6612.0
6705.0
49.13
0.074
6649.33
-1.51
-1.83
ML
5580.0
5805.0
5496.0
159.77
0.245
5627.00
-3.89
-4.21
MQ
7220.0
6740.0
7140.0
257.16
0.381
7033.33
-0.62
-0.94
MT
7452.0
7513.0
7566.0
57.02
0.091
7510.33
0.49
0.18
MV
6335.0
6330.0
6590.0
148.69
0.206
6418.33
-2.05
-2.37
N
7236.0
7113.0
7159.0
62.14
0.098
7169.33
-0.30
-0.62
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 5
V-
Insufficient data
X s
Determined to be an outlier
II = Below control limit
-------
6/9 EMSL-LVPerformance Evaluation: Tritium in Water, 10-Mar-1995
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
NB
•' 14.0
"12.0
V 16.0
2.00
0.003
14.00
-16.96
-17.28 x
NH
NT
72140
7498.0
7234.0
158.52
0.225
7315.33
0.04
-0.28
ill
NJ
6900.0
6300.0
6400.0
321.46
¦¦ "¦ ^
0.476
6533.33
-1.78
{ -s * , X> "'j •>'' >,,
-2.10
NO
7921.0
8014.0
8097.0
88.03
0.140
8010.67
1.66
1.34
NP
7192.0
6637.0
6849.0
280.07
0.441
6892.67
-0.95
-1.26
O
7290.0
7471.0
7432.0
95.25
0.144
7397.67
0.23
-0.09
OA
7421.0
6618.0
6930.0
404.81
0.638
6989.67
-0.72
-1.04
OK
7758.0
7722.0
7749.0
18.72
0.029
7743.00
1.03
0.72
OL
6290.0
6536.0
6859.0
285.37
0.452
6561.67
-1.72
-2.03
OX
7161.0
7555.0
7358.0
197.00
0.313
7358.00
0.14
-0.18
PB
7737.0
7365.0
7324.0
227.54
0.328
7475.33
0.41
0.09
PE
6932.0
7122.0
6748.0
187.00
0.297
6934.00
-0.85
-1.17
PI
7330.0
7630.0
7651.0
179.57
0.255
7537.00
0.55
0.24
PJ
9084.0
9841.0
8667.0
595.15
0.932
9197.33
4.42
4.10 It
PM
7658.0
7421.0
7488.0
122.18
0.188
7522.33
0.52
0.20
PQ
7327.0
7240.0
7331.0
51.45
0.072
7299.33
0.00
-0.32
PV
8576.0
5841.0
4852.0
1929.01
4.727
6423.00
-2.04
-2.36
Q
6480.0
6643.0
6480.0
94.11
0.129
6534.33
^1.78
s -2.10
QA
•v '¦?, vs&A \
fr*'' V
QC
7190.0
7190.0
7280.0
52.00
0.071
7220.00
-0.18
-0.50
QD
7932.0
7592.0
7436.0
253.62
0.394
7653.33
0.82
0.51
QI
6477.0
6720.0
6513.0
131.14
0.193
6570.00
-1.70
-2.01
QJ
7250.0
7630.0
7413.0
190.64
0.302
7431.00
0.31
-0.01
QP
7690.0
7840.0
7896.0
106.51
0.164
7808.67
1.19
0.87
QQ
7942.0
8112.0
8024.0
85.01
0.135
8026.00
1.69
1.38
QT
8636.0
7927.0
7734.0
474.96
0.716
8099.00
1.86
1.55
QU
8393.0
8493.0
8625.0
116.38
0.184
8503.67
2.80
2.49
QW
8443.0
8325.0
8504.0
90.99
0.142
8424.00
2.62
2.30
QX
8364.0
8540.0
8540.0
101.61
0.140
8481.33
2.75
2.44
QZ
7719.0
7550.0
7460.0
131.48
0.206
7576.33
0.65
0.33
R
7195.0
7438.0
7432.0
138.60
0.193
7355.00
0.13
-0.19
KB
6780.0
6890.0
6990.0
105.06
0.167
6886.67
-0.96
-1.28
RH
7407.0
6777.0
7181.0
319.17
0.500
7121.67
-0.41
-0.73
RL
~ j ' # - ¦- v
RO
7482.0
7334.0
7407.0
74.03
0.117
7407.67
0.25
-0.06
RQ
liWlMi
fttlrtllli
•
RR
7233.0
7256.0
7399.0
89.93
0.132
7296.00
-0.01
-0.32
RU
5856.0
6883.0
6952.0
613.83
0.870
6563.67
-1.71
-2.03
RV
7088.0
6183.0
6496.0
459.61
0.718
6589.00
-1.65
-1.97
RX
8861.0
9118.0
8604.0
257.00
0.408
8861.00
3.64
3.32 It
S
7309.0
7479.0
7629.0
160.10
0.254
7472.33
0.40
0.09
sc
7225.0
6988.0
6715.0
255.22
0.405
6976.00
-0.75
-1.07
SD
7218.0
7418.0
7703.0
243.75
0.385
7446.33
0.34
0.03
SF
7112.0
7114.0
7103.0
5.64
0.009
7109.67
-0.44
-0.76
• =
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
11 = Below control limit
>J
-------
fF==
EMSL-LV Performance Evaluation: Tritium in Water, 10-Mar-1995
7/9
Tritium
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SI
6980.0
6950.0
7050.0
51.35
0.079
6993.33
-0.71
-1.03
SM
7740.0
7450.0
7450.0
167.44
0.230
7546.67
0.58
0.26
SN
7091.0
6959.0
7064.0
69.76
0.105
7038.00
-0.61
-0.92
SS
7675.0
7453.0
7827.0
188.10
0.297
7651.67
0.82
0.50
ST
6750.0
6850.0
7400.0
350.01
0.516
7000.00
-0.70
-1.01
su
7042.0
6829.0
6587.0
227.65
0.361
6819.33
-1.12
-1.43
sz
7550.0
7578.0
7340.0
130.10
0.189
7489.33
0.44
0.13
T
6800.0
6900.0
6800.0
57.74
0.079
6833.33
-1.08
-L40
TC
5814.0
7111.0
9213.0
1715.31
4.235
7379.33
0.19
-0.13
TD
1980.0
1860.0
1630.0
177.86
0.278
1823.33
-12.75
:?13<06>i x '
TE
6800.0
7000.0
7200.0
200.00
0.318
7000.00
-0.70
-1.01
TF
8160.0
8640.0
8480.0
244.40
0.381
8426.67
2.62
2.31
TH
7320.0
7492.0
7535.0
113.77
0.171
7449.00
0.35
0.03
TI
8720.0
8280.0
8500.0
220.00
0.349
8500.00
2.80
2.48
TL
7480.0
7018.0
7434.0
254.51
0.367
7310.67
0.03
-0.29
TN
8321.0
8420.0
8530.0
104.54
0.166
8423.67
2.62
2.30
TO
6219.0
7574.0
6707.0
686.27
1.144
6833.33
-1.08
-1.40
TQ
7280.0
7410.0
6710.0
372.34
0.556
7133.33
-0.39
-0.70
TX
6184.0
6547.0
6096.0
239.06
0.358
6275.67
-2.38
-2.70
U
7490.0
7400.0
7240.0
12661
0198
7376.67
0.18
-0.14
UC
§1
IpflPIpS
TO
tfflilli
'f \*J ;v -
Mm,-:'
's .XmV v.
UE
7371.0
7468.0
7376.0
54.65
0.077
7405.00
0.25
-0.07
UK
7200.0
7200.0
6900.0
173.21
0.238
7100.00
-0.46
-0.78
UN
7457.0
6616.0
7498.0
497.81
0.700
7190.33
-0.25
-0.57
uo
6261.0
6203.0
5923.0
180.74
0.268
6129.00
-2.72
-3.04 U
UP
7517.0
6901.0
7200.0
308.04
0.489
7206.00
-0.22
-0.53
UT
7370.0
7552.0
7391.0
99.56
0.144
7437.67
0.32
0.01
UW
7900.0
7768.0
7733.0
88.09
0.133
7800.33
1.17
0.85
UX
ISBIlltlllll
<w"
'r-jf/'-*
VG
7520.0
7330.0
7260.0
134.53
0.206
7370.00
0.16
-0.15
VI
6261.0
6357.0
6216.0
72.01
0.112
6278.00
-2.38
-2.69
VM
7532.0
7473.0
. 7548.0
39.49
0.060
7517.67
0.51
0.19
VN
6170.0
6099.0
6542.0
237.93
0.352
6270.33
-2.40
-2.71
VP
7908.0
7308.0
7908.0
346 41
0.476
7708.00
0.95
0.64
VQ
< < s * .. i-"S
T.'' .-.-s\
• •
VR
8998.0
8022.0
7567.0
731.14
1.259
8195.67
2.09
1.77
VW
8627.0
9056.0
9488.0
430.50
0.684
9057.00
4.09
3.78 It
VX
S „ •< V
'' ;.v '
ilPIIP
•'-'•X v y.>'^ '.www.vvw^y w^w.v.'vyw^vjyj^'wv.vf v .
vz
9000.0
7000.0
6000.0
1527.53
3 632
7333.33
0.08
-0.24
w
7006.0
7036.0
6597.0
245.26
0.349
6879.67
-0.98
-1.29
• =
No data submitted
•
TAG SYMBOLS
It = Above control limit
III
$
—V
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
ft
\
8/9 EMSL-LV Performance Evaluation: Tritium in Water, 10-Mar-1995
t
Tritium
Exper.
Rng anal
Normalized deviation
Lab Res. 1
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg)
(known) Tag
WD 7163.0
7185.0
7162.0 13.04
0.018
7170.00 -0.30
-0.62
WF 6900.0
6900.0
6900.0 0.00
0.000
6900.00 -0.93
-1.25
WH 7980.0
7660.0
7820.0 160.00
0.254
7820.00 1.21
0.90
m
Jlllllff
lIBIt
W.A., • ¦ -V# .
X 7550.0
7280.0
7360.0 138.68
0.214
7396.67 0.23
-0.09
Z 6688.0
7043.0
7023.0 199.44
0.282
6918.00 -0.89
-1.20
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
14.00
X
NB
6892.67
NP
7149.33
JM
1823.33
X
TD
6900.00
WF
7169.33
N
4800.00
X
FZ
6918.00
Z
7170.00
WD
5063.33
u
AI
6934.00
PE
7172.33
BL
5611.67
u
LT
6970.00
LR
7186.67
BB
5627.00
u
ML
6976.00
SC
7190.33
UN
5971.67
n
AJ
6989.67
OA
7206.00
UP
6000.33
n
FJ
6993.33
SI
7216.67
EB
6129.00
u
UO
6998.00
AF
7220.00
QC
6196.67
BO
7000.00
TE
7221.33
AP
6270.33
VN
7000.00
ST
7236.67
J
6275.67
TX
7003.33
UY
7244.67
C
6278.00
VI
7005.67
EL
7246.67
JP
6340.00
A
7021.33
AW
7290.33
FL
6418.33
MV
7025.00
AY
7296.00
RR
6423.00
PV
7030.00
DM
7299.33
PQ
6455.00
EX
7033.33
MQ
7310.67
TL
6480.00
GQ
7036.67
BI
7315.33
NH
6533.33
NJ
7038.00
SN
7333.33
VZ
6534.33
Q
7045.67
HI
7333.33
AU
6553.33
DG
7056.67
AH
7355.00
R
6561.67
OL
7066.67
CJ
7358.00
OX
6563.67
RU
7086.67
KX
7360.00
JS
6570.00
QI
7093.33
LE
7360.00
CE
6589.00
-
RV
7100.00
UK
7370.00
VG
6649.33
MA
7109.67
SF
7376.67
U
6666.67
BW
7116.67
DI
7379.33
TC
6764.67
BC
7116.67
CQ
7396.67
X
6772.00
L
7121.67
RH
7397.67
0
6819.33
su
7123.00
D
7405.00
UE
6833.00
FU
7130.00
HP
7407.67
RO
6833.33
TO
7132.33
CP
7427.67
IC
6833.33
T
7133.33
TQ
7431.00
QJ
6879.67
W
7136.33
KH
7433.33
DT
6885.67
I
7139.67
EW
7437.67
UT
6886.67
RB
7146.67
JK
7446.33
SD
• s No data submitted
TAG SYMBOLS
ff s Above control limit
0 = Insufficient data
x s Determined to be an outlier
U s Below control limit
-------
EMSL-LV Performance Evaluation: Tritium in Water, 10-Mar-1995 9/9
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
7449.00
TH
7648.00
DL
8099.00
QT
7455.00
HK
7651.67
SS
8110.00
BM
7460.00
CA
7653.33
QD
8130.67
HR
7472.33
S
7654.33
JE
8195.67
VR
7475.33
PB
7670.00
CS
8261.67
JR
7478.67
DH
7708.00
VP
8423.67
TN
7489.33
SZ
7709.33
AK
8424.00
QW
7505.67
AZ
7710.67
K
8426.67
TF
7510.33
MT
7726.67
AE
8433.33
BG
7514.00
BA
7743.00
OK
8481.33
QX
7517.67
VM
7800.33
UW
8500.00
TI
7522.33
PM
7808.67
QP
8503.67
QU
7533.33
GE
7820.00
WH
8861.00
It
RX
7537.00
PI
7850.00
M
9057.00
IT
VW
7546.67
SM
7850.00
DE
9197.33
IT
PJ
7573.33
JY
7913.67
VC
9343.33
tr
CG
7576.33
QZ
7933.33
EA
9400.00
tr
JI
7589.00
E
8010.67
NO
9535.67
tr
VA
7646.67
HJ
8026.00
QQ
10076.67
X
CX
responding labs
Frequency distribution
104
0
a. ¦
I
fllbfi
—I—
+6
-6
-4 -2 A +2 +4
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
10- -
0J*r-
JUfll
filllflll
-2 0 +2 +4
Normalized deviation of the mean from the grand average
• 3 No data submitted
0 a Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It s Above control limit
U s Below control limit
-------
United States Office of Research and EPA 600/R-95/072
Environmental Protection Development May 1995
Agency Washington, DC 20460
&EPA Plutonium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the March 17/1995 Data
-------
Plutonium in Water
Performance Evaluation Study
March 17, 1995
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702^798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Plutonium In Water; March 17,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LVs Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system s
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
Geoige Dilbeck
Chemist
Radloanalysis Branch
V/
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Plutonium in Water, 17-Mar-1995
1/7
The following pages consist of separate sections for each of the nuclides in study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limita.
The warning limits are placed at two normalized standard deviations above And below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precisian control
charts. If this value is between 2.0 and 3.0, your analytical process precisian is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the mmrimiim of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/7
EMSL-LV Performance Evaluation: Plutonium in Water, 17-Mar-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dmdiiog the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
-------
EMSL-LV Performance Evaluation: Plutonium in Water, 17-Mar-1995
3/7
Plutonium-239 Statistical Summary 91 Participants
The known value of this nuclide is 11.1 pCi/1 with an expected precision of 1.1; the control limits
are 9.2 to 13.0; the warning regions are 9.2 to 9.8 and 12.4 to 13.0
12(13.2 %) Failed to respond
6(6.6 %) Outliers '
4(4.4 %) Out of control *
but not an outlier
Statistic
. 66(72.5 %) Within all limits
Respondents
3(3.3 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
13.78
19.85
393.94
143.98
24.19
0.14
10.70
-3.60
-0.02
Grand Avg 10.61
0.69
0.47
6.49
-4.43
-0.71
10.67
-3.90
-0.63
10(12.7 %) More than 3 norm. S.D. \
3(3.8 %) Between 2 and 3 norm. S.D. •
• 42(53.2 %) Within 1 norm. S.D.
of known value
24(30.4 %) Between 1 and 2 norm. S.D.
-------
4/7 EMSL-LV Performance Evaluation: Plutonium in Water, 17-Mar-1995
Plutonium-239
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
A
10.7
11.2
11.8
0.55
0.591
11.23
AH
11.0
10.8
11.1
0.15
0.161
10.97
AI
' V
MM
¦BIMilM
AZ
10.7
10.5
10.6
0.10
0.107
10.60
BB
9.8
9.9
10.5
0.38
0.376
10.07
BC
11.2
11.4
11.3
0.10
0.107
11.30
B6
9.6
10.9
10.0
0.67
0.698
10.17
BG
11.1
9.8
10.0
0.70
0.698
10.30
BG
10.2
10.0
10.3
0.15
0.161
10.17
BK
9.7
9.9
9.9
0.12
0.107
9.83
BL
10.7
10.1
10.5
0.31
0.322
10.43
BM
10.5
10.0
9.8
0.36
0.376
10.10
BO
10.8
10.8
10.9
0.06
0.054
10.83
CA
11.7
10.8
10.6
0.59
0.591
11.03
CJ
10.0
11.0
10.0
0.58
0.537
10.33
CK
11.7
10.8
11.9
0.59
0.591
11.47
CM
10.4
10.0
10.3
0.21
0.215
10.23
CO
10.6
10.9
10.6
0.17
0.161
10.70
CQ
11.0
11.0
10.0
0.58
0.537
10.67
CS
10.9
11.0
11.0
0.06
0.054
10.97
CX
10.8
10.2
10.8
0.35
0.322
10.60
D
10.1
8.7
9.8
0.74
0.752
9.53
DO
11.7
11.5
12.3
0.42
0.430
11.83
DT
10.7
10.3
11.1
0.40
0.430
10.70
E
10.9
11.2
11.2
0.17
0.161
11.10
EL
8.8
8.9
9.0
0.10
0.107
8.90
FJ
10.4
10.8
10.8
0.23
0.215
10.67
Normalized deviation
(grand-avg) (known) Tag
0.98
0.56
0.21
-0.21
-0.01
-0.79
-0.85
-1.63
1.09
0.31
-0.70
-1.47
-0.49
-1.26
-0.70
-1.47
-1.22
-1.99
-0.28
-1.05
-0.80
-1.57
0.35
-0.42
0.67
-0.10
-0.43
-1.21
1.35
0.58
-0.59
-1.36
0.14
-0.63
0.09
-0.68
0.56
-0.21
-0.01
-0.79
-1.69
-2.47
1.93
1.15
0.14
-0.63
0.77
0.00
-2.69
-3.46
0.09
-0.68
0.62
-0.16
1.550
0.107
2.777
0.215
22.4 21
10.3
9.1
10.7
11.5
10.8
11.0
0.537
1.448
0.161
0.161
M
iiMi
:S4^iW?Ss3K
11.7 0.40
0.376
0.000
0.698
• a No data submitted
0 s Insufficient data
TAG SYMBOLS
Determined to be an outlier
ft 3 Above control limit
Jl b Below control limit
-------
EMSL-LV Performance Evaluation: Plutonium in Water, 17-Mar-1995
5/7
Plutonium-239
Lab Res. 1 Res. 2
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
OS 10.4 10.3 10.6 0.15
mmiiP"' - ¦
18010; ¦ 166.0
SSlte
QJ 9.4 10.8 9.2 0.87
I *' 1 Itl
0.268
yilB
10.23
-0.59
-1.36
255.18
0.859
QZ
9.5
10.3
9.8
0.40
0.430
9.87
-1.17
-1.94
RF
10.4
9.2
8.7
0.87
0.913
9.43
-1.85
-2.62
KL
9.6
9.6
10.3
0.40
0.376
9.83
-122
-1.99
RR
11.9
10.9
11.4
0.50
0.537
11.40
1.25
0.47
RV
12.0
11.8
10.9
0.59
0.591
11.57
1.51
0.73
SC
10.1
10.8
10.0
0.44
0.430
10.30
-0.49
-1.26
SD
11.1
13.1
12.6
1.04
1.141
12.27
2.61
1.84
SF
10.8
10.9
10.9
0.06
0.054
10.87
0.41
-0.37
SI
11.0
10.2
10.8
0.42
0.430
10.67
0.09
-0.68
SM
10.1
9.6
11.2
0.82
0.859
10.30
-0.49
-1.26
SS
10.4
9.7
10.7
0.51
0.537
10.27
-0.54
-1.31
ST
10.8
10.1
10.6
0.36
0.376
10.50
-0.17
-0.94
sx
10.4
10.9
8.9
1.04
1.141
10.07
-0.85
-1.63
sz
10.4
10.1
11.6
0.79
0.805
10.70
0.14
-0.63
TD
10.6
11.7
10.0
0.86
0.913
10.77
0.25
-0.52
TE
11.2
11.3
11.5
0.15
0.161
11.33
1.14
0.37
TH
10.7
11.0
10.2
0.40
0.430
10.63
0.04
-0.73
H
10.8
10.9
10.7
0.10
0.107
10.80
0.30
-0.47
TL
11.4
9.7
10.4
0.85
0.913
10.50
-0.17
-0.94
TQ
10.0
10.1
10.3
0.15
0.161
10.13
-0.75
-1.52
0.268
0.322
fSMMSwMMm
0.376
0.268
10.73
11.97
11.00
10.57
0.215
0.483
Mmh
0.268
0.644
0.107
10.10
11.50
-1.57
0.63
-0.63
• s No data submitted
0 3 Insufficient data
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
1! s Below control limit
-------
6/7
EMSL-LV Performance Evaluation: Plutonium in Water, 17-Mar-1995
Plutonium-239
Lab Res. 1 Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Normalized deviation
Average (grand-avg) (known) Tag
11.2
11.6
10.2
0.72
0.752
11.00
0.62
-0.16
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
7.30
X
PV
10.43
OS
10.97
CS
8.80
JY
10.43
BL
10.97
AH
8.90
EL
10.47
J
11.00
Z
9.10
UP
10.50
TL
11.00
VI
9.10
HP
10.50
ST
11.00
FZ
9.43
RF
10.57
VO
11.03
CA
9.53
D
10.60
CX
11.07
VB
9.80
QJ
10.60
AZ
11.10
E
9.83
BK
10.63
TH
11.23
NH
9.83
RL
10.67
SI
11.23
JK
9.87
QZ
10.67
FJ
11.23
A
10.00
NJ
10.67
CQ
11.30
BC
10.07
SX
10.70
WI
11.33
TE
10.07
BB
10.70
sz
11.40
RR
10.10
W
10.70
DT
11.47
L
10.10
BM
10.70
CO
11.47
CK
10.13
TQ
10.73
VE
11.50
WG
10.17
BG
10.73
KH
11.57
RV
10.17
BG
10.73
JS
11.83
DO
10.23
OB
10.77
TD
11.87
JE
10.23
CM
10.80
TI
11.97
VG
10.27
SS
10.80
LT
12.27
SD
10.30
SM
10.83
BO
14.73
X
TS
10.30
SC
10.87
SF
16.57
X
GQ
10.30
BG
10.87
NK
21.73
X
JP
10.33
CJ
10.97
UE
81.60
172.67
X
X
FU
PQ
responding laba
Frequency distribution
104
o
lit
*
in. i. -
i
-6
-2 0 +2
Normalized deviation of the mean from the known value
*6
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
It e Above control limit
JJ 3 Below control limit
-------
EMSL-LV Performance Evaluation: Plutonium in Water, 17-Mar-1995 7/7
Plutonium-239
% responding labs Frequency distribution
10-
„ 1
T —l r 1"" i" T* * i p-
-6 -4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
lirtplif-
-------
United States Office of Research and EPA 600/R-95/116A
Environmental Protection Development August 1995
Agency Washington, DC 20460
<&EPA Blind-A Performance
Evaluation Study
A Statistical Evaluation of
the April 18, 1995 Data
RECEIVED
AUG I 1 095
EMSL LV LIBRARY
0593RSO98 COV-118A
a
>
-------
Blind-A
Performance Evaluation Study
April 18, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Radiation Sciences Branch (CRD-LV)
Performance Evaluation Study for Bllnd-A; April 18, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency,
it has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
1/30
The following pages consist of separate sections for each of the nuclides in thin study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and severed
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit, of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/30 CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
The Range Analysia(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, CRD-LV, 702/798-2104.
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
3/30
Gross Alpha Statistical Summary 194 Participants
The known value of this nuclide is 47.5 pCi/1 with an expected precision of 11.9; the control limits
are 26.9 to 68.1; the warning regions are 26.9 to 33.7 and 61.3 to 68.1
36(18.6 %) Failed to respond »
1 (0.5 %) Outliers '
10(5.2 %) Out of control *
but not an outlier
Statistic
132(68.0 %) Within all limits
Respondents
** 15(7.7 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value .
56.42
70.05
4906.76
124.16
18.77
0.13
50.58
6.49
0.04
Grand Avg 50.90
10.06
101.12
19.76
7.16
0.34
50.47
6.25
0.30
11 (7.0 %) More than 3 norm. S.D. »„
15(9.5 %) Between 2 and 3 norm. S.D. *
.84(53.2 %) Within 1 norm. S.D.
' of known value
48(30.4 %) Between 1 and 2 norm. S.D.
-------
(f
4/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Y
Gross Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
53.6
51.8
49.0
2.32
0.228
51.47
0.08
0.58
AE
49.9
51.7
50.5
0.92
0.089
50.70
-0.03
0.47
AF
65.0
66.0
52.0
7.81
0.695
61.00
1.47
1.96
AH
509
52.4
43.2
4.94
0.457
48.83
-0.30
0.19
AI
AJ
44.3
57.2
55.1
6.92
~ 0 640
52.20
0.19
0.68
AK
51.6
52.3
58.1
3.57
0.323
54.00
0.45
0.95
AL
62.1
59.7
59.5
1.45
0.129
60.43
1.39
m 1.88
AO
: -
jillglM
¦¦¦¦
AP
40.8
43.5
48.0
3.64 "
0.357
44.10
-0.99
-0.49
AR
61.4
62.7
60.2
1.25
0.124
61.43
1.53
2.03
AU
56.0
50.0
49.0
3.79
0.347
51.67
0.11
0.61
AW
40.3
41.3
39.6
0.85
0.084
40.40
-1.53
-1.03
AZ
61.3
63.5
57.7
2.93
0.288
60.83
1.45
1.94
BA
48.7
50.4
50.1
0.91
0.084
49.73
-0.17
0.33
BB
51.7
54.2
50.6
1.84
0.179
52.17
0.18
0.68
BC
69.0
70.8
70.4
0.94
0.089
70.07
2.79
3.28 IT
BO
llflllliit
BH
52.3
48.2
55.5
3.66
0.362
52.00
0.16
0.65
BK
46.6
46.1
46.4
0.25
0.025
46.37
-0.66
-0.16 _
BL
siill*i|B|
P1PII1#
III??hSb r*ip
BM
47.8
49.3
49.7
1.00
0.094
48.93
-0.29
0.21
BN
76.2
68.6
66.4
5.14
0.486
70.40
2.84
3.33 tr
BO
42.6
45.2
42.5
1.53
0.134
43.43
-1.09
-0.59
BS
50.6
49.6
51.2
0.81
0.079
50.47
-0.06
_ 0.43
BW
illttlllil
i^g|S|pp
•
C
45.4
45.5
45.6
0.10
0.010
45.50
-0.79
-0.29
CA
41.1
42.3
41.8
0.60
0.060
41.73
-1.33
-0.84
CE
53.0
53.5
56.9
2.12
0.194
54.47
0.52
1.01
CG
57.6
54.4
59.7
2.67
0.263
57.23
0.92
1.42
CJ
42.0
40.0
37.0
2.52
0.248
39.67
-1.64
-1.14
CK
48.4
45.6
44.4
2.05
0.199
46.13
-0.69
-0.20
CM
" . V *'
:y?S /
*
CO
50.8
50.8
49.7
0.64
0.055
50.43
-o!o7
0.43
CP
33.0
33.0
34.0
0.58
0.050
33.33
-2.56
-2.06
CQ
53.0
54.0
57.0
2.08
0.199
54.67
0.55
1.04
CS
46.2
49.4
44,1
2.67
0.263
46.57
-0.63
-0.14
CX
54.3
54.6
50.9
2.06
0.184
53.27
0.34
0.84
D
42.3
50.4
52.0
5.20
0.481
48.23
-0.39
0.11
DB
49.1
49.7
51.0
0.97
0.094
49.93
-0.14
0.35
DD
49.4
49.7
53.4
2.23
0.199
50.83
-0.01
0.49
DE
59.8
59.9
60.0
0.10
0.010
59.90
1.31
1.80 ;
DG
> v.<^ ' r , <*Sw
•
DJi-
, ' * '• '••
-------
If
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
5/30
Gross Alpha
"\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
DM
.
•
DO
v \
?€:SSSSS
/>, , , *
*.. 'V
«»
• '
DS
51.7
52.6
54.8
1.59
0.154
53.03
0.31
0.81
DT
52.0
55.0
59.0
3.51
0.347
55.33
0.64
1.14
DZ
41.8
41.2
41.6
0.31
0.030
41.53
-1.36
-0.87
E
49.0
51.0
51.0
1.15
0.099
50.33
-0.08
0.41
EB
55.6
57.8
57.4
1.17
0.109
56.93
0.88
1.37
EL
wmmm
_
« l; m}#p
vttfeC&v: ofciWiteS.
EO
44.0
47.0
45.0
1.53
0.149
45.33
-0.81
-0.32
ER
58.3
55.5
53.9
2.23
0.218
55.90
0.73
1.22
EV
43.6
_ 41.8
46.3
2.26
0.223
43.90
-1.02
-0.52
EX
Z?*.< it\ '¦ '&r-
. • ?'*•> • *
* .. *
SipiiS!!
r. va *» ¦jvv*
•
FF
52.0 "
51.0
50.0
1.00
0.099
51.00
0.01
0.51
FJ
41.8
45.7
41.6
2.31
0.204
43.03
-1.15
-0.65
FL
36.5
41.5
34.5
3.61
0.347
37.50
-1.95
-1.46
FN
47.1
47.1
44.0
1.79
0.154
46.07
-0.70
-0.21
FU
49.8
49.8
52.8
1.73
0.149
50.80
-0.01
0.48
FZ
59.0
53.0
56.0
3.00
0.298
56.00
0.74
1.24
OE
iniiV! sim
n
.
Ql
VV'^'4.'-y."* ™?&'
T4,r:.f ^;;
llSSfiiSil
rnmmmm
.
GQ
33.2
30.9
32.1
1.15
0.114
32.07
-2.74
-2.25
GT
47.5
37.7
33.8
7.06
0.680
39.67
-1.64
-1.14
GZ
54.1
54.4
53.9
0.25
0.025
54.13
0.47
0.97
HI
52.0
55.0
57.0
2.52
0.248
54.67
0.55
1.04
HK
65.1
63.9
61.7
1.72
0.169
63.57
1.84
2.34
HL
54.9
54.9
54.9
0.02
0.000
54.90
0.58
1.08
HP
43.8
44.4
43.1
0.65
0.065
43.77
-1.04
-0.54
I
41.0
38.5
37.3
1.89
0.184
38.93
-1.74
-1.25
IC
53.9
52.3
55.4
1.55
0.154
53.87
0.43
0.93
ID
45.1
47.0
44.8
1.19
0.109
45.63
-0.77
-0.27
J
54.5
55.9
47.6
4.44
0.412
52.67
0.26
0.75
JE
45.6
48.8
45.1
2.01
0.184
46.50
-0.64
-0.15
JG
51.0
49.5
49.7
0.81
0.074
50.07
-0.12
0.37
JN
61.5
57.7
57.9
2.14
0.189
59.03
1.18
1.68
JQ
54.8
55.6
50.5
2.74
0.253
53.63
0.40
0.89
JS
53.8 _
57.6
54.0
2.14
0.189
55.13
0.62
1.11
JY
? i i: 3 i::: iiii"r"
raillwipWTO
il%fl
-
K
58.9
61.1
65.9
3.58
0.347
61.97
1.61
2.11
KE
70.8
86.2
76.5
7.79
0.764
77.83
3.92
4.42
ir
KT
45.0
50.0
55.0
5.00
0.496
50.00
-0.13
0.36
KX
53.0
61.0
61.0
4.62
0.397
58.33
1.08
1.58
L
51.0
51.0
51.0
0.00
0.000
51.00
0.01
0.51
LF
34.0
28.0
33.0
3.21
0.298
31.67
-2.80^
-2.30
LG
* -> „<
% *" -
ISPIifi
v< v!y!$egx-
• •
LL
35.0
37.1
33^8
1.67
0.164
35.30
" -2.27
-1.78
No data submitted
TAG SYMBOLS
It = Above control limit
0 s
Insufficient data
x =
Determined to be an outlier
<11 s Below control limit
-------
6/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Gross Alpha
Lab
Res. 1
Exper. Rng anal Normalized deviation
^es- ^ Res. 3 Sigma (R + SR) Average ' (grand-avg) (known) Tag
LR
43.0
44.0
46.0
LT
47.5
42.1
44.1
M
75.0
80 0
72.0
MA
£i.:•&?&
MF
61.6
61.8
60.0
MP
MQ
51.0
49.0
53.0
MV
52.0
53.0
58.0
MY
lllllll
N
53.5
58.8
51.3
NA
48.1
48.6
48.5
NH
65.0
72.0
61.0
NIC :
'
NJ
48.6
45.9
40.0
NK
32.4
32.4
35.5
NO
51.5
54.5
57.3
NT
53.0
54.0
53.5
O
48.6
54.1
47.9
OF
52.4
56.4
68.4
OS
OX
49.5
47.8
51.1
O*
•••'874#^"
978.0 5
)15.0
OZ
55.4
61.0
62.0
P
84.0
87.4
82.0
PA
33.4
34.9
40.7
PB
49.8
52.7
50.7
PG
77.5
67.0
71.2
PI
wmsmzm
PM
38.2
40.6
39.4
PQ
45.7
46.2
39.4
PR
44.0
41.0
39.0
PV
PW
48.1
51.4
55.8
mmzm
Q
50.4
47.2
45.3
QC
39.8
39.9
40.0
QJ
38.3
35.1
39.3
QP
53.0
46.0
47.0
QQ
53.2
59.4
66.5
QT
48.1
44.0
50.7
QU
28.2
30.0
32.2
QW
33.8
37.3
35.6
QX
Q*
48.4
mrrnmmmmrn
v'^WSWIKm9i
49.7
50.7
QZ
42.5
43.0
42.9
RD
46.0
53.0
51.0
1.53
0.149
44.33
-0.96
2.73
0.268
44.57
-0.92
4.04
0.397
75.67
3.60
^ & .. : -V
0.99
0.089
61.13
1.49
-0.46
-0.43
4.10
ir
2.00
3.21
3.86
0.26
5.57
..
4.40
1.79
2.90
0.50
3.40
8.33
1.65
0.199
0.298
0.372
0.025
0.546
awMi
0.427
0.154
0.288
0.050
0.308
0.794
0.164
51.00
54.33
:
0.01
0.50
54.53 0.53
48.40 -0.36
66.00 2.20
illllillf
44.83 -0.88
33.43 -2.54
54.43 0.51
53.50 0.38
50.20 -0.10
59.07 1.19
49.47 -0.21
1.98
iiiiiiiiiilfc
0.51
0.99
1.02
0.13
2.69
-0.39
-2.05
1.01
0.87
0.39
1.68
0.29
;?33 x
jam
w&m
0.328
59.47
5.38 IT
84.47
36.33
51.07
0.144
3.55 IT
0.521
71.90
.'Tvf vTJf
M&mm
wsCx A
lllPPlif
•,{*
0.119
0.338
0.248
0.382
39.40
43.77
41.33
51.77
mm
39.90
0.010
37.57
0.347
0.660
47.60
0.333
0.199
0.174
0.31
Kpsp
1IH|=E
49.60
0.114
mmm
42.80
50.00
0.025
0.347
• a No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT 3 Above control limit
U s Below control limit
-------
(?
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
^
7/30
Gross Alpha
>
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RE
55.3
51.2
43.6
5.94
0.581
50.03
-0.13
0.37
RF
46.7
45.3
47.8
1.25
0.124
46.60
-0.63
-0.13
RG
49.0
39.0
47.0
5.29
0.496
45.00
-0.86
-0.36
RJ
' '
ISIIillll
-;, -K- y&'gi
mmm
RK
333
37.8
30.8
3.55
0.347
33.97
-2.46
-1.97
RP
v
SHIBIifllil
||||?|
¦¦ ¦ .
RR
38.0
43.0
43.0
2.89
0.248
41.33
-1.39
-0.90
RV
46.0
64.0
63.0
10.12
0.893
57.67
0.98
1.48
RZ
55.1
56.0
54.4
0.80
0.079
55.17
0.62
1.12
S
56.8
56.4
56.1
0.35
0.035
56.43
0.81
1.30
sc
45.8
36.9
47.0
5.52
0.501
43.23
-1.12
-0.62
SD
69.1
63.8
68.5
2.90
0.263
67.13
2.36
2.86
SF
57.1
58.7
62.3
2.66
0.258
59.37
1.23
1.73
SI
63.8
66.1
67.4
1.82
0.179
65.77
2.16
2.66
SL
52.8
56.0
67.6
7.79
0.735
58.80
1.15
1.64
SM
66:4
68.9
73.0
3.33
0.328
69.43
2.70
3.19
it
SN
60.4
59.6
47.2
7.40
0.655
55.73
0.70
1.20
SO
48.7
47.7
48.9
0.64
0.060
48.43
-0.36
0.14
SR
55.0
55.0
55.0
0.00
0.000
55.00
0.60
1.09
SS
50.2
52.8
49.4
1.78
0.169
50.80
-0.01
0.48
ST
41.0
39.8
48.3
4.60
0.422
43.03
-1.15
-0.65
sx
40.7
36.0
36.0
2.71
0.233
37.57
-1.94
-1.45
sz
49.9
53.2
49.3
2.10
0.194
50.80
-0.01
0.48
T
43.2
44.9
43.3
0.95
0.084
43.80
-1.03
-0.54
TD
52.5
46.8
50.8
2.93
0.283
50.03
-0.13
0.37
TE
63.0
69.0
65.0
3.06
0.298
65.67
2.15
2.64
TH
51.0
45.0
49.0
3.06
0.298
48.33
-0.37
0.12
TI
56.4
58.4
54.4
2.00
0.199
56.40
0.80
1.30
TL
57.8
58.1
64.0
3.50
0.308
59.97
1.32
1.81
TN
45.3
44.2
43.4
0.95
0.094
44.30
-0.96
-0.47
TQ
43.6
35.9
38.4
3.93
0.382
39.30
-1.69
-1.19
TS
50.3
45.7
50.9
2.84
0.258
48.97
-0.28
0.21
TY
55.0
56.0
53.0
1.53
0.149
54.67
0.55
1.04
U
76.6
85.8
68.2
8.80
0.874
76.87
3.78
4.27
tr
UA
49.2
56.3
48.0
4.49
0.412
51.17
0.04
0.53
UE
502
43 .7 _
_„48-3
3.34
0.323
47.40
-0.51
-0.01
§118
UG
UK
iSfliSlSIll
UN
31.4
33.5
* 35.7
2.15
0.213
33.53
-2.53
-2.03
UP
47.2
48.6
48.4
0.76
0.069
48.07
-0.41
0.08
UQ
68.0
69.0
70.0
1.00
0.099
69.00
2.63
3.13
ft
UW
54.8
53.1
52.6
1.15
0.109
53.50
0.38
0.87
UY
' ' ,"v
VA
49.4
54.2
51.5
2.41
0.238
51.70
0.12
0.61
VC
'. *
"'V '< <"> V' " "
s
>;
" r «v, • ^yc'V^1
• = No data submitted
TAG SYMBOLS
It 3 Above control limit
0 = Insufficient data
X =
Determined to be an outlier
11 s Below control limit
JJ
-------
(c 1—
8/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
^
Gross Alpha
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VG
40.3
41.4
41.5 0.67
0.060
41.07
-1.43
-0.94
VI
45.6
52.6
51.6 3.79
0.347
49.93
-0.14
0.35
VJ
41-3
421
40.4 0.85
0.084
41.27
-1.40
-0.91
VM
, > ' -
¦. * ' *•
IBllSIt
•
VN ' ¦
"¦ - -
llii'
A s
¦
vo
35^8
39.8
38.9 2.10
0.199
38.17
-1.85
-1.36
VQ
H9
V>V\' • m-W
VT
51.8
505
53.0 1.25
0.124
51.77
0.13
0.62
VII
liilliilSi
A' •*>•.Va'VC' -A,
w
63.4
64.6
66.5 1.56
0.154
64.83
2.03
2.52
WE
81.3
83.8
81.0 1.54
0.139
82.03
4.53
5.03 It
WF
32.2
33.6
27.5 3.20
0.303
31.10
-2.88
-2.39
X
41.7
39.2
40.2 1.26
0.124
40.37
-1.53
-1.04
z -•
: r-—'
Data sorted by Laboratory Avera{
:«
Average
Tag
Lab
Average
Tag
Lab
Average
Tag Lab
30.13
QU
41.73
CA
48.07
UP
31.10
WF
42.80
QZ
48.23
D
31.67
LF
43.03
ST
48.33
TH
32.07
GQ
43.03
FJ
48.40
NA
33.33
CP
43.23
SC
48.43
SO
33.43
NK
43.43
BO
48.67
QP
33.53
UN
43.77
PQ
48.83
AH
33.97
RK
43.77
HP
48.93
BM
35.30
LL
43.80
T
48.97
TS
35.57
QW
43.90
EV
49.47
OS
36.33
PA
44.10
AP
49.60
QX
37.50
FL
44.30
TN
49.73
BA
37.57
QJ
44.33
LR
49.93
VI
37.57
sx
44.57
LT
49.93
DB
38.17
VO
44.83
NJ
50.00
RD
38.93
I
45.00
RG
50.00
KT
39.30
TQ
45.33
EO
50.03
TD
39.40
PM
45.50
C
50.03
RE
39.67
GT
45.63
ID
50.07
JG
39.67
CJ
46.07
FN
50.20
O
39.90
QC
46.13
CK
50.33
E
40.37
X
46.37
BK
50.43
CO
40.40
AW
46.50
JE
50.47
BS
41.07
VG
46.57
CS
50.70
AE
41.27
VJ
46.60
RF
50.80
FU
41.33
RR
47.40
UE
50.80
SZ
41.33
PR
47.60
QT
50.80
SS
41.53
DZ
47.63
Q
50.83
DD
• = No data submitted
TAG SYMBOLS
IT s Above control limit
0 = Insufficient data
vj.
x = Determined to be an outlier
= Below control limit ,
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
9/30
Gross Alpha
-
Data sorted by Laboratory Averag
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
51.00
MQ
54.47
CE
59.90
DE
51.00
L
54.53
N
59.97
TL
51.00
FF
54.67 .
TY
60.43
AL
51.07
PB
54.67
HI
60.83
AZ
51.17
UA
54.67
CQ
61.00
AF
51.47
A
54.90
HL
61.13
MF
51.67
AU
55.00
SR
61.43
AR
51.70
VA
55.13
JS
61.97
K
51.77
VT
55.17
RZ
63.57
HK
51.77
FV
55.33
DT
64.83
W
52.00
BH
55.73
SN
65.67
TE
52.17
BB
55.90
ER
65.77
SI
52.20
AJ
56.00
FZ
66.00
NH
52.67
J
56.40
TI
67.13
SD
53.03
DS
56.43
S
69.00
ft
UQ
53.27
CX
56.93
EB
69.43
ft
SM
53.50
UW
57.23
CG
70.07
tr _
BC
53.50
NT
57.67
RV
70.40
ft ;
BN
53.63
JQ
58.33
KX
71.90
ft
PG
53.87
IC
58.80
SL
75.67
ft
M
54.00
AK
59.03
JN
76.87
ft
U
54.13
GZ
59.07
OF
77.83
ft
KE
54.33
MV
59.37
SF
82.03
ft '
WE
54.43
NO
59.47
oz
84.47
ft
P
59.70
QQ
922.33
X
OY
% responding labs
Frequency distribution
10-
% responding labs
+2 •
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-F
o
lTll-
-4 -2 0 +2 ^
Normalized deviation of the mean from the grand average
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit.
11 = Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
10/30
Radium-226
Statistical Summary
194 Participants
The known value of this nuclide is 14.9 pCi/1 with an expected precision of 2.2; the control limits
are 11.1 to 18.7; the wiarning regions are 11.1 to 12.4 and 17.4 to 18.7
87(44.8 %) Failed to respond,
85(43.8 %) Within all limits
7(3.6 %) Outliers
9(4.6 %) Out of control
but not an outlier
Statistic
Respondents
•— 6(3.1 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
14.74
3.03
9.20
20.58
-1.10
-0.05
14.67
-1.57
-0.08
Grand Avg 14.66
1.96
3.83
13.36
-1.64
-0.13
14.62
-1.90
-0.14
16(15.0 %) More than 3 norm. S.D. ,
6(5.6 %) Between 2 and 3 norm. S
,61(57.0 %) Within 1 norm. S.D.
of known value
24(22.'
Between 1 and 2 norm. S.D.
-------
f(
.
11/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Radium-226
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
A
15.0
14.6
14.8
0.20
0.107
14.80 0.11 -0.08
AE
13.2
13.5
13.7
0.25
0.134
13.47 -0.94 -1.13
AF
14.7
14.7
14.2
0.29
0.134
14.53 -0.10 -0.29
AH
20.6
14.6
16.3
3.09
2164
17.17 1.98 1.78
AI
' \ s. ''
-- - , v-* ^.v,
* ' ¦/'''¦ H*; -&?' C;f„, '
AJ
14.2
14.9
14.6
0.35
0.188
14.57 -0.07 -0.26
AK
16.7
17.9
17.7
0.64
0.322
17.43 2.19 1.99
AL
13.2
13.7
13.9
0.36
0.188
13.60 -0.83 -1.02
AO
¦ ¦ i ^ LI-^ y
s •?./¦ ¦'•.! v*&\- •s-fa'*
AP
15 1
15.3
15.7
0.31
0.161
15.37 0.56 0.37
AR
llllJSffli
AU
12.7
12.5
12.5
0.12
0.054
12.57 -1.64 -1.84
AW
13.8
13.4
13.9
0.26
0.134
13.70 -0.75 -0.94
AZ
16.9
15.2
18.4
1.60
0.859
16.83 1.71 1.52
BA
14.1
13.3
14.1
0.46
0.215
13.83 -0.65 -0.84
BB
|||pp|!|||p||P'
BC
14.8
16.4
14.9
0.90
0.430
15.37 0.56 0.37
BG
i®lIIlSISBi|
, •> "¦*< > ' ^ ' I *¦ ' <
BH
13.3
14.1
13.7
0.40
0.215
13.70 -0.75 -0.94
BK
14.1
13.8
141
0.17
0.081
14.00 -0.52 -0.71
BL
mi
- - £-¦ -', ";£
ll^HlIB
BM
15.8
16.7
15.0
0.85
0.456
15.83 0.93 0J3
BN
15.6
17.7
15.3
1.31
0.644
16.20 1.22 1.02
BO
12.7
12.7
13.3
0.35
0.161
^ 12.90 -1.38 _ _ -1.57
BS
ansiggy
fllPPIilp
iHlSSillR
BW
liBiiiil
•x^$&
:'«. ". <>
•C '•' \ . .-¦&* ¦:¦ A' '¦C ./V vj *• v-^- s.+- ¦*y?- "*&*si-T,£isS\
CP
3$$$:
CQ
t s *.,. \'i, ..^ y - ^ ' *'?<, ... ¦'¦,' "J \ ~-v s f"-v i. /X- s * ^ >y r^r-7'- * ''¦
v .'Ls /• v • ' ¦;- •'
CS
?5& v
C3£
D
¦idKiSfS^
$W*<
¦W'sQvt
siSl'
s% vX" ' ?X/'
DB
14.8
14.3
1.4.5
0.25
0.134
14.53 -0.10 -0.29
DD
DE
155
15.6
15.6
0.06
0.027
15.57 0.72 0.52
DG
DJ:
DL
llPlilBil
^fVWVrf.-# '¦ ¦•,.':'. vi^s'iv! v.'.
•
• 3
No data submitted
TAG SYMBOLS
It 3 Above control limit
0 =
Insufficient data
X 3
Determined to be an outlier 41 a Below control limit
-------
(/
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995 12 / 30
Radium-226
-N
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
M
-< •
*
- ; '
•, v, . r v -v?" ;v^: ^ v-
DO
v " "¦ ' < ' , s' *
DS
f ' ' >
' 1- '" t'y "') S, v r
\ ' N + ' -"" ^ ; J' > -vlX^
DT
14.3
13.7
13.0
0.65
0.349
13.67 -0.78 -0.97
DZ
14.4
14.7
14.4
0.17
0.081
14.50 -0.12 -0.31
E
13.8
13.9
13.1
0.44
0.215
13.60 -0.83 -1.02
EB
15.8
15.8
15.7
0.06
0.027
15.77 0.88 0.68
EL
14.0
14.9
15.5
0.75
0.403
14.80 0.11 -0.08
EO
14.7
14.5
15.3
0.42
0.215
14.83 0.14 -0.05
ER
142
143
14.7
0.26
A134
14.40 -0.20 -0.39
EV
life
•¦••• .•• • 1
' :V<> i-' ^3' <':Y
EX
*¦
^ "" s **S- »
^ J '< ¦¦"¦ '' f'' \ ^+, ^y>-< $s, ^Vv<'#'^
FF
\
' <¦ ' ^ > ,> -v^'^®vv;
FJ
FL
i
??-??
FN
12.2
13.9
1.4.4
1.15
0.591
13.50 -0.91 -1.10
FU
E$:$£V J.?? V:":'.-: :,,V::
llHIiP
FZ
: 3.4
3.3
3.3
0.06 ¦¦
0.027
3.33 -8.91 -9.11 x-
OE
' * "V
01
:;•¦¦"•J?j*
¦¦ ;A *¦
1 v. V " ^
GQ
14.9
14.2
15.7
0.75
0.403
14.93 0.22 0.03
GT
- ¦ <¦', "¦" s
sfMSIS
';
,-i:
- "<" * <" * "*¦ -s-v.
,*l ~ "•' ' ^
GZ
:SS8Bliy
BliilM
||||||||||^|
"'' , '¦ ¦¦;¦'' v' :^:'y' 1 • f ¦ h\': ¦¦ ¦ "A
v " •* v •> 4$'s' r ^ ^ 5 "'•
* --- 5"M( „* - 1 iV,-":<-. ¦
HI
- , -s ^ s
-
iV ' -„y; ' /.//V ^^Cjk?
HK
14.2
15.2
14.2
0.58
0.268
14.53 -0.10 -0.29
HL
14.0
14.0
14.3
0.17
0.081
14.10 -0.44 -0.63
HP
15.8
14.4
15.1
0.70
0.376
15.10 0.35 0.16
I
15.6
16.6
15.2
0.72
0.376
15.80 0.90 0.71
IC
* A
IBis:pi|;Sfe!S:3!
' " ' ' '? ' w S
¦,:i ;vA: > -A ¦':¦;£? k ,
ID
12.5
13.1
11.3
0.92
0.483
12.30 -1.85 -2.05
J
14.1
15.6
15.4
0.81
0.403
15.03 0.30 0.10
JE
19.0
17.6
18.3
0.70
0.376
18.30 2.87 2.68
JG
9.3
11.2
_ U? .
MO
0.510
10.57 -3.22 -3.41 U
JN
- i V.
iiiiiiiii!
"%,Y "*« m v
" * .s' y"S-^;:-; *s **<*J^T5-
JQ
' -:;
•, ••*'¦
JS
159
16.2
11.9
2.40
1.294
14.67 0.01 -0.18
JY
' >v, "
v"--' ¦¦
K
11.1
12.9
13.4 1.21
0.618
12.47 -1.72 -1.92
KE
, - ft, s-v-! ,,-*i
KT
, -vO" '
KX
% ' * y"'
* ' " +
-- ' , \ *¦¦ t IV;
< - ~ ~
L
13.9
14.1
13.8
0.15
0.081
13.93 -0.57 -0.76
LF
" ' •''' * „
" ••¦-' ¦¦ >.'T J"v
^ * XS N>' v ''ss ^
LG
>, ( ( ' .\ / W VA (» W >s » S ' 4 V »
' ' ~ > <>: X 1*^1'
< '•."•¦ •-" ' ¦¦ "< s« v1 j A1-s '>• \^,j^
LL
^ V\' / >
\ ,
v , ,
• 5
No data submitted
TAG SYMBOLS
IT s Above control limit
hi
O
—')
Insufficient data
X =
Determined to be an outlier 11 = Below control limit
-------
ft =
13/30 CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Radium-226
>
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LR
270
26.0
. '. t:: 24.0
1.53
. 0.805
25.33
^;v-^8,41^- BStt; '¦ ^
LT
14.8
14.7
12.9
1.07
0.510
14.13
-0.41 -0.60
M
15.5
15.8
16.9
0.74
0.376
16.07
1.11 0.92
MA
lilllBi
IJIpSSI
ll^Biilll
MF
, j '
&«'.•
jaiggif
MP
' t ,f,y <• *: '
".irrr;: >;
l!lli«!ll
"•'•'> ''*¦¦¦ sS>3
MQ
•.vS i- V:
Si!||®l
:"• 4 <,y--,-v}iW v1" *' ¦ '* ' v>.''.y ;r^.;'¦.'¦"':;,'X"v- )¦ ^*'£!?:
MY
itelBiii'iStiii
Hum
N
15.7
14.0
13.9
1.01
0.483
14.53
-0.10 -0.29
NA
' • . < • -Vs V
pilil|lp;fl£
y4-1;- -:r -•>>-, ' <<¦'-< \-\V "
, -m, <« ,s-,^ -i."'"'. !'.'¦ "X"-'::'¦;?...?»¦?
NJ
20.6
^_18.3
18.5
1.27
0.618
19.13
3.53 3.33 It
NK
I1IIII11IIISP
^ if
^ ^ N ' , - ~ - '< ¦, '* ^
s"\- •• • • " ,Sa/. : • '• s"£ V"",v. •'
NO
15.2
15.7
16.3
0.55
0.295
15.73
0.85 0.66
NT
14.6
^ 15.3 ^
16.0
0.70
0.376
15.30
0.51 0.31
O
wvfi-Sv:«•:•:$<•X:U
l^llpMill
v:::^:;^ww:: <:•::<•: w^wrvs»w*:ww<^w««'.
OF
10.9
11.6
14.0
1.63
0.832
12.17
-1.96 -2.15
OS
SIIMIiBiB
tppSSillt
liilllilli
OX
15.3
15.2
15.1
0.10
0.054
15.20
0.43 0.24
OY
14.8
14.0
14.0
0.46
0.215
14.27
-0.31 __-0;50
OZ
UMPH
P
18.0
18.3
18.5
0.25
0.134
18.27
2.84 2.65
PA
••.•i > • ¦., <.v >.
¦''V--:'.-'¦:!?'*¦:'"S¦ :V'~~ "¦"7' ':::':i: "-
..¦-v V Vca-~'< ?-!*&:
PB
14.7
14.6
15.1
0.26
0.134
14.80
0.11 -0.08
PG
13.9
12.7 ^
13.2
0.60
0.322
13.27
-1.09 -1.29
PI
PM
iMiI*ll
illiililMII
II^HllllI
C*^•i/ /'¦/ •">v.^>-L£j*.
¦¦ ^^ <" ', $', ' +.<"¦ ', "-"a Vr
PQ
9.3
11.7
12.1
1.51
0.752
11.03
-2.85 -3.04 J1
PR
PV
10.8
10.6
9.3
0.81 *
0.403
10.23
-3.48 -3.67 1
PW
16.0
17.8
13.3
2.26
1.397
15.70
0.82 0.63
Q
16.0
15.7
18.9
^ 1.77
0.859
16.87
1.74 1.55
QC
MHMM
QJ
14.9
15.0
15.0
0.06
0.027
14.97
0.25 0.05
QP
1wp«fc;
^'¦:.;"yv: ™Ay%j>fr? < .
iilllllBllllli
QQ
'Ha
16.3
....... i7 o
0.56
0.295
16.90
1.77 1.57
QT
9.4
7.6
„ 83
0.91
0.483
8.43
-4.90 -5.09 U
QU
7.2
7.7
7 8
0.32
0.161
QW
IBM
^ ^v„v^S'X "f; / jV^-v V'v.^
QX
21.8
22.4
20.8
0.81
0.430
21.67
QY
15.1
15.0
15.0
0.06
0.027
15.03
0.30 0.10
QZ
13.0
14.8
14.8
1.04
0.483
14.20
-0.36 -0.55
RD
14.2
14.2
14.9
0.40
0.188
14.43
-0.17 -0:37
• =
No data submitted
TAG SYMBOLS
It s Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
II a Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995 14/30
Radium-226
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
RE
•. • --y ^
A ' V - ^
1§SSft:S:f®
•:''
RF
16.2
16.0
15.0
0.64
0.322
15.73
0.85 0.66
RG
<* ' A" " ' . s
' '*' '•
' 1 -
!4Vr:'-:j v;" V"'
RJ
!||^
RK
14.1
12.1
13.7
1.06
0.537
13.30
-1.07 -1.26
RP
" ' * '
.: .'•••• ---•••-• s:K>x-ft- •••:
RR
•
RV
11.8
15.8
15.2
2.16
1.141
14.27
-0.31 -0.50
RZ
14.1
14.2
14.0
0.10
0.054
14.10
-0.44 -0.63
S
16.3
16.4
16.2
0.10
0.054
16.30
1.30 1.10
sc
17.0
16.5
17.1
0.32
0.161
16.87
1.74 1.55
SD
14.2
15.1
14.4
0.47
0.242
14.57
-0.07 -0.26
SF
13.5
13.3
13.7
0.20
0.107
13.50
-0.91 -1.10
SI
16.4
14.3
16.8
1.34
0.671
15.83
0.93 0.73
SL
:/a?ww<«ws;
msm
SM
12.6
12.9
13.2
0.30
0.161
12.90
-1.38 -1.57
SN
: *$•>-"
is»
SO
15 4
16.5
16.3
0.59
0.295
16.07
1.11 0.92
SR
< ¦' ^ J, '*i-
mrnmmmmMszm!
,, ¦¦••I' j** vv w'<
ss
16.6
14.7
13.7
1.47
0.779
15.00
0.27 0.08
ST
14.8
15.3
14.2
0.55
0.295
14.77
0.09 -0.10
SX
13.4
13.6
14.4
0.53
0.268
13.80
-0.67 -0.87
SZ
14.0
15.1
16.2
1.10
0.591
15.10
0.35 0.16
T
15.2
14.4
14.9
0.40
0.215
14.83
0.14 -0.05
TD
24:4 '' '
16.7
26.0
4.97
3.851
22.37
^rem 5.88 x.
TE
11.7
15.0
14.2
1.72
0.886
13.63
-0.80 -1.00
TH
11.9
11.9
11.4
0.29
0.134
11.73
-2.30 -2.49
TI
17.4
15.2
17.6
1.33
0.644
16.73
1.64 1.44
TL
5.4
mm M mm
5.8 5.9
0.26
0.134
5.70
-7.05 -7^24 x
TN
20.8
21.4
19.4
1.03
0.537
20.53
4.63 4.44 tt
TQ
17.4
17.2
17.0
0.20
0.107
17.20
2.00 1.81
TS
18.9
21.6
21.0
1.42
0.725
20.50
4.60 4.41 tf
TY
; \
$3tli§DPi^
t ^V''v
U
11.7
10.8
10.5
0.62
0.322
11.00
-2.88 -3.07
UA
st. z-v*1.
^ ' - "V'J
' v s <• ' '
UE
14.0
13.6
_ ^ 15.2
0.83
0.430
14.27
-0.31 -0.50
UG
, ¦"¦. ASWV "ft*- •*'•$ t . ¦"+J4'Ai<«rts1pX
-' jV v- x s! a ""s<- - ' ' ^ ^ Jc>vjk '' A
;;-?v - >*-¦>-;*¦::' ;¦¦:'''
UK
£.;! '& :1 /-•*'• a;."?''
UN
11.4
9.1
9^6
1.21
0.618
10.03
-3.64 -3.83 4
UP
14.5
15.1
15.0
0.32
0.161
14.87
0.17 -0.03
UQ
14.6
14.4
15.7
0.70
0.349
14.90
0.19 0.00
uw
15.3
16.8
15.7
0.78
0.403
15.93
1.01 0.81
UY
lipiia
•+ ,
VA
29.2
26.3 .
20.6
4.38
3.493
26.37
8:43 8.24 x
¦ ¦ ¦.. . ¦
vc-
*4 'Z vA f y"1 * A^*.+£( ¦•A^
• =
No data submitted
TAG SYMBOLS
ft 3 Above control limit
0 =
-—
Insufficient data
x s Determined to be an outlier
3 Below control limit
J]
-------
15/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Radium-226
Lab
Res. 1
Exper. Rng anal Normalized deviation
^es- % Rea. 3 Sigma (R + SR) Average ¦ (grand-avg) (known) Tag
va
VI
VJ
VM
VN
vo
VQ
VT
VU
W
WE
WF
X
Z
14.7
13.0
14.8
1.01 0.483 14.17 -0.38 -0.58
13.4
15.1
14.6
13.6
13.9
0.322
15.0
0.84 0.403 14.57 -0.07 -0.26
Data sorted by Laboratory Average
Average
Ta«r
Lab
Average
Tag
Lab
Average
Tag
Lab
3.33
X
FZ
13.70
AW
14.80
F!T.
5.70
X
TL
13.70
BH
14.80
A
7.57
X
QU
13.80
SX
14.83
T
8.43
U
QT
13.83
BA
14.83
EO
10.03
U
UN
13.93
L
14.87
UP
10.23
PV
13.97
W
14.90
UQ
10.57
U
JG
14.00
BK
14.93
GQ
11.00
II
U
14.10
RZ
14.97
QJ
11.03
a
PQ
14.10
HL
15.00
SS
11.53
CK
14.13
LT
15.03
QY
11.73
TH
14.17
VI
15.03
J
12.17
OF
14.20
QZ
15.10
HP
12.30
ID
14.27
UE
15.10
SZ
12.47
K
14.27
RV
15.20
OX
12.57
AU
14.27
OY
15.30
NT
12.90
SM
14.40
ER
15.37
BC
12.90
BO
14.43
RD
15.37
AP
13.07
CE
14.50
DZ
15.50
CG
13.27
PG
14.53
N
15.57
DE
13.30
RK
14.63
HK
15.57
C
13.37
CA
14.53
AF
15.67
CJ
13.47
AE
14.53
DB
15.70
PW
13.50
SF
14.57
X
15.73
RF
13.50
FN
14.57
SD
15.73
NO
13.60
E
14.57
AJ
15.77
EB
13.60
AL
14.67
JS
15.80
I
13.63
te
14.77
ST
15.83
SI
13.67
DT
14.80
PB
15.83
BM
• a No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft
s Above control limit
s Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
16/30
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
15.93
UW
16.83
AZ
18.30
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
17/30
Radium-228 Statistical Summary 194 Participants
The known value of this nuclide is 15.8 pCi/1 with an expected precision of 4.0; the control limits
are 8.9 to 22.7; the warning regions are 8.9 to 11.2 and 20.4 to 22.7
91 (46.9 %) Failed to respond ;
6(3.1 %) Outliers —
Statistic
87(44.8 %) Within all limits
Respondents
— 10(5.2 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
15.48 Grand Avg 15.42
3.91 2.49
15.29 6.19
25.26 16.13
-2.03- - .2.38
-0.08 -0.15
15.60 15.60
-1.27 -1.27
-0.05 -0.08
6(5.8 %) More than 3 norm. S.D.
10(9.7 %) Between 2 and 3 norm. S.D
66(64.1 %) Within 1 norm. S.D.
of known value
21 (20.4 %) Between 1 and 2 norm. S.D.
-------
18/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Radium-228
Lab Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
A
13.1
10.5
11.3
1.33
AE
16.5
15.9
15.9
0.35
AF
16.7
16.7
17.1
0.23
AH
18.8
19.1
16.3
1.54
AI
16.8
13.9
16.5
1.59
AJ
15.9
15.7
15.3
0.31
AK
17.0
18.3
19.3
1.15
AL
14.1
13.9
13.4
0.36
AO
IBIBIBIl
AP
10.1
8.3
12.3
2.00
AR
lliiligl
AU
2.3
4.2
2.0
1.19
AW
20.1
19.0
18.3
0.91
AZ
15.5
16.9
16.8
0.78
BA
12.9
13.8
H.6
111
BB
BC
n.i
11.2
11.4
0.15
BG
BH
11.4
11.0
10.6
0.40
BK
»r.
18.7
17.5
170
0.87
Dli
BM
15.9
15.8
... 15-7
0.10
BN
• < '
llitigl
BO
15.0
14.5
16.6
1.10
BS
BW
IlilBllBlllI
C
19.1
18.3
17.8
0.66
CA
15.9
11.4
12.0
2.44
CE
14.6
17.0
14.5
1.42
CG
15.9
16.1
15.3
0.42
CJ
14.0
11.0
14.0
1.73
CK
12.5
12.5
13.8
0.75
CM
;ffli:3||ll|
i|iI^|Bi||i
CO
sm
CP
CQ
..- -&¦¦¦
CS
13.4
13.5
15.6
1.24
CX
D
DB
140
14.9
14.5
0.45
DD ,
:^sSSSi&§%
DE
16.7
16.8
16.8
0.06
DG
IllllllSllll
DJ---
bifen
IISpplBi
., v"\v ^
0.384
0.089
0.059
0.413
0.428
0.089
0.340
0.103
0.591
11.63
16.10
16.83
18.07
15.73
15.63
18.20
13.80
10.23
-1.64
0.29
0.61
1.14
0.13
0.09
1.20
-0.70
-1.80
0.13
0.45
0.98
-0.03
-0.07
1.04
-0.87
. ®
-2.2R
•2.41
0.266 19.13
0.207 16.40
0.325 12.77 -1.15 -1.31
0.044 11.23 -1.81 -1.98
0.118 11.00 -1.92 -2.08
0.251 17.73 1.00 0.84
0.030 15.80 0.16 0 00
0.310 15.37 -0.02 -0.19
0.192
0.665
0.369
0.118
0.443
0.192
15.77
13.00
0.325 lA-in -ft ti
14.17
0.133
0.015
14.47
16.77
-0.41
bis
¦0.58
+ •. j
«W?WK
0.42
ItMiWMMiMiMiMttHHMMiMaiiHifekMMHiMlUUMMUMttMUtMMMMMillM
.*
.sfe'
•"
0 =
No data submitted
Insufficient data
TAG SYMBOLS
x 3 Determined to be an outlier
It = Above control limit
li 3 Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
19/30
Radium-228
Lab Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
DM
DO
DS
DT
DZ
E
EB
EL
EO
';EEt
EV
EX
FF
FJ
FL
FN
FU
FZ
GB
OI
GQ
;gt§
GZ
HI
JN
JQ
JS
JY
K
KE
KT
KX
L
LF
LG
LL
15.1
15.7
15.8
15.9
17.9
16.0
15.3
16.0
19.5
17.4
15.5
15.8
16J
17.0
17.0
0.45
0.26
0;47
0.133
0.074
15.53
15.60
0.133
18.3
11.0
'j
13.8
'¦ VV- ¦;
*18.1
7.6
12.7
18.4
14.0
""a >
12.0
1.84 0.532
0.45 0.133
- 4 vH'^
...Aj.vs . s_ Vv'' -
0.044
17.47
#111111
0.15
3.20
0.945
18.27
»s;SS«!i!BSH-!S.
1.23 1.07
tili*
>sl
0.91
0.266
12.83 -1.12 -1.28
Hni
~ ' < V> <^< V* "
SMfawp&51IP
iBMiM
HK
13.7
14.0
13.3
0.35
0.103
13.67
-0.76
-0.92
HL
13.1
13.1
13.1
0.01
0.000
13.10
-1.01
-1.17
HP
16.5
15.4
14.2
1.15
0.340
15.37
-0.02
-0.19
I
13.0
14.9
14.7
1.04
0.281
14.20
-0.53
-0.69
IC
¦ v-i::lr..^';;A rf^
i' -r^" 1.?"
W*?SMzmSi
•^••i-:.-'::-;j':>ci:.:'i:i<::T,:"
iSHSltSifilSi
A h, * J< ?>v #
ID
14.2
16.8
15.7
1.31
0.384
15.57
Oj06 "
-0.10
J
16.5
15.6
15.6
0.52
0.133
15.90
0.21
0.04
JE
11.7
14.2
16.9
2.60
0.768
14.27
-0.50
-0.66
JG
12.4
12.2
13.7
0.81
0.222
12.77
-1.15
-1.31
1.4.6
10.9
16.2
ffPIlP
11.9
^ 15.4
8.3
s- '.
. v- ri'.¦y.- y.'.-.v. ,*, a-,1,,¦/,%•¦- •• v. •• o ^¦' .
V' ¦¦* ¦*> ,'Y
16.1
> .-rfV
- '', V>*'
16.8
f A/> ?£*&
16.5
0.80
1.86
0.35
¦ s ', . >
0.236
ipiipliii
0.532
' ¦%
0.103
,-r"f
- r- .rs^?^
- / v • -,', --A^ ''-.V7V>
< > * >/-/ +v*vv- =
% "v 'v, v2 viV,' <•'''
IS^SliiiSiiiPiiPS
0.17
«w.. -
10.37 -2.19 -2.35
:$3&
0.29
*111
16.47
0.45
iim
• = No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft a Above control limit
<11 s Below control limit
-------
20/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Radium-228
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
LR
- 20.0
27.0
.¦ 26.0
3»79
1.064 ¦;
? 24,33 f
LT
18.7
19.5
24.5
3.14
0.856
20.90 2.37 2.21
M
17.9
16.1
17.1
0.90
0.266
17.03 0.70 0.53
MA
"~.y»>v-<"
MF
MP
MQ
MV
MY
•* {. v f'l; :/&:?*¦ §?:
M ""%••• ^ > *'• 'J •
N
16.9
16.8
16.0
0.49
0.133
16.57 0.49 0.33
NA
1$
8gS|S§|^
NH
16.3
17.7
15.8
0.98
0.281
16.60 0.51 0.35
NI
;.<\ <•;•>• : ¦'¦:,"*.C isUl;: , • -S ' jSy^V,:: T^^.r:- g
NJ
15.0
19.0
170
2.00
0.591
17.00 0.68 0.52
NK
r<^ ^VJ+S ^ V . V. ^>
A ¦>. V C ->^ ^ S (f< w
NO
12.2
14.1
16.2
2.00
0.591
14.17 -0.54 -0.71
NT
15.3
15.6
15.9
0.30
0.089
15.60 0.08 -0.09
O
OF
11.0
9.4
10.4
0.81
0.236
10.27 -2.23 -2.40
OS
p^llpplSPt
OX
15.7
15.9
15.9
o!l2
0.030
15.83 0.18 0.01
OY
15.0
13.0
14.5
1.04
0.295 _
, 1417 -054 -0.71 ^
OZ
Hlplllt
MS!
P
16.4
168
16.2
0.31"
o!o89
16.47 0.45 0.29
PA
• . ..• ••
i'V** *£
vW" .^^^..'C-'^ ^ 'v.': .VftV Jtv^'--V":3T'^V^4^)-^^
PB
15.1
15.6
15.8
0.36
0.103
15.50 0.03 -0.13 "
PG
issH^Ssiif
PI
•¦.• £.'./. 'y\:
4$&0y>
¦» :v ' .<. - . ^ v^. 'Vf- •¦¦ . 'f; '. ->
PM
¦¦ \:j ~c <
iilfiitfii
:^9SiS&l^9
V. %•':.¦?¦:...''/.:^si. •."' «'<^-s.. ""^. :,.<}. *. >&)¦'• ¦"••. ¦.'•¦>.¦<<: }'\s'' ¦ ¦ i*.' .' '..'ox &£,< .&
PQ
19.2
14.3
18.1
2.57
0.724
17.20 0.77 0.61
PR
PV
18.0
16.3
12.2
2.98
0.856
15.50 0.03 -0.13
PW
16.3
16.0
16.5
0.25
0.074
16.27 0.36 0.20
Q
19.6
21.6
20.6
1.00
0.295
20.60 2.24 2.08
QC
:,:'W '•%.
QJ
16.1
20.0
16.0
2 28
0.591
17.37 0.84 0.68
QP
QQ
QT
QU
QW
QX
QY
QZ
RD
13.3
7.7"
27.8
13.8
14.0
13.1
4.9
26.4
15.2
13.9
12.4
6.3
24.0
14.9
10.3
0.47
1.51
1.92
0.74
2.11
0.133
12.93
-1.08
-1.24
6:413 5.97 -4.10 -4.26
4.45
/-v^ v,¦'¦> • :ss^-Ci sv^
M
0.207
0.546
14.63
12.73
-0.34
-1.17
-0.51
-1.33
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
1T = Above control limit
JJ. = Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995 21/30
Radium-228
'
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
RE
_ ,t
'
;'v ri*
RF
16.2
16.1
1.13
0.295
16.80 0.60
0.43
RG
i { ,< • ¦ - ¦
"" ¦* " s-
RJ
,\V' , , ^ \
RK
36.4
34.1
36.1 «
1.01
0.295
36.20 8.56
RP
' '
¦> \
' "¦ l'v >
''
^ ^ ^ i-.+>%5;-X''^v l^"5v ' *,.s\
<' ^ <-¦¦•: -j. •^:"
RR
s , *
,^SA i- , *
v + " *< A »
"vVMj
RV
16.9
15.1
17.5
1.25
0.354
16.50 0.47
0.30 "
RZ
18.2
15.3
15.6
1.59
0.428
16.37 0.41
0.25
S
16.1
14.8
14.5
0.85
0.236
15.13 -0.13
-0.29
sc
14.4
13.4
13.7
0.51
0.148
13.83 -0.69
-0.85
SD
15.6
15.1
12.2
1.84
0.502
14.30 -0.49
-0.65
SF
18.5
18.7
19.0
0.25
0.074
18.73 1.43
1.27
SI
2.6
3.8
5.2
1.30
0.384
3.87 -5.00
-5.17 ¦ ¦ x
SL
J8pi||®B2H
• •
SM
20.6
16.9
21.0
2.26
0.605
19.50 1^76 ^
1.60
SN
, • •Wi-SWjJsy
.. 'J- '^'y.}'^yX::
SO
t-jksi4SS.'
•
SR
jy
mMiSi
>' v5/w/^-sv.vV:;;
ss
18.1
16.7
15.8
1.16
0.340
16.87 0 62
0.46
ST
14.9
14.4
14.1
0.40
0.118
14.47 -0.41
-0.58
sx
19.0
14.0
13.4
3.07
0.827
15.47 0.02
-0.14
sz
8.1
8.9
9.7
0.80
0.236
8.90 -2.82
-2.99
T
15.8
16.6
18.0
1.11
0.325
16.80 0.60
0.43
TD
19.0
14.8
14.3
2.58
0.694
16.03 0.26
0.10
TE
16.9
14.9
16.2
1.01
0.295
16.00 0.25
0.09
TH
15.9
16.9
17.2
0.68
0.192
16.67 0.54
0.38
n
11.8
14.8
10.3
2.29
0.665
12.30 -1.35
-1.52
TL
12.7
13.6
17.9
2.78
0.768
14.73 -0.30
-0.46
TN
14.4
13.7
12.5
0.96
0.281
13.53 -0.82
-0.98
TQ
18.2
19.1
16.5
1.32
0.384
17.93 1.09
0.92
TS
16.3
.. ...J4-1.
17.0
1.51
0.428
15.80 0.16
0.00
TY
PUT" "**?»*.•^'art
U
103
11.4
14.7
2.29
0.650
12.13 -1.42
-1.59
UA
........ . ,
%' VA - *¦ ' '
' -
' ' '¦ ¦ .. ;¦ 'i' ¦ v ¦>'; -J.; /' ;¦ \ *i:v
UE
17.5
1.4.5
16.1.
1.50
0.443
16.03 0.26
0.10
UG
- v A" 0
.
' ~ X % 5 <'«.'
5v< 'A V5""-i A
. - ** *s \r ,v
VA
21.6
23.1
19.2
1.97
0.576
21.30 2.54
2.38
VC5
%V'« iv
C Ycf}:'
v:
• =
No data submitted
TAG SYMBOLS
tt s Above control limit
0 s Insufficient data x a Determined to be an outlier II = Below control limit'
-------
22/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Radium-228
Lab
Res. 1 Res. 2 Res. 3
VG
VI
VJ
VM
VN
vo
VQ
VT
VU
W
WE:
WF
X
z
13.1
15.7
13.6
18.6
13.6
17.4
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
0.074 13.43 -0.86 -1.02
0.428 17.23 0.78 0.62
0.29
1.46
12.3
18.7
14.6
23.0
13.6
-C "J* ?> J*'- V'
25.2
1.15
3.31
0.340
1.00
teSBIillp
--..Vv •''
0.960 22.30 2.98 2.81
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.83
X
AU
14.10
UQ
15.80
TS
3.87
X
SI
14.17
OY
15.80
BM
5.97
X
QU
14.17
NO
15.83
OX
8.90
sz
14.17
CS
15.90
J
10.23
AP
14.20
I
16.00
TE
10.27
OF
14.27
JG
16.03
UE
10.37
K
14.30
SD
16.03
TD
10.87
FZ
14.47
ST
16.10
AE
11.00
BH
14.47
DB
16.17
EB
11.23
BC
14.63
QZ
16.27
PW
11.63
A
14.73
TL
16.37
RZ
12.13
U
15.13
S
16.40
AZ
12.30
TI
15.37
HP
16.47
P
12.73
RD
15.37
CE
16.47
L
12.77
JG
15.37
BO
16.50
RV
12.77
BA
15.40
JS
16.57
N
12.83
GQ
15.47
sx
16.60
NH
12.93
QT
15.50
PV
16.67
TH
12.93
CK
15.50
PB
16.77
DE
13.00
CJ
. 15.53
DT
16.80
T
13.10
CA
15.57
ID
16.80
RF
13.10
HL
15.60
UW
16.83
AF
13.43
VG
15.60
NT
16.87
SS
13.50
W
15.60
DZ
17.00
NJ
13.53
TN
15.63
AJ
17.03
M
13.67
HK
15.73
UN
17.20
PQ
13.80
AL
15.73
AI
17.23
VI
13.83
SC
15.77
CG
17.37
QJ
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
IT
II
a Above control limit
a Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
23/30
Radium-228
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab
Average
Tag
Lab
17.43
17.47
17.73
17.93
18.07
18.20
EO
EL
BK
TQ
AH
AK
18.27
18.40
18.73
19.13
19.50
19.90
FN
C
SF
AW
SM
UP
20.60
20.90
21.30
22.30
24.33
26.07
35.20
x
x
X
Q
LT
VA
X
LR
QX
RK
% respradinglab8_ Frequency distribution
10-
¦. -l.il lllli..
¦d -2 6 +2 +4
Normalized deviation of the mean from the known value
% responding jabs Frequency distribution
10-
- Vt—ifli.|TlllT»-
T-
-6
Normalized deviation of the mean from the grand average
0
s No data submitted
= Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft a Above control limit
U 5 Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
24/30
Uranium (Natural) Statistical Summary 194 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 3.0; the control limits
are 4.8 to 15.2; the warning regions are 4.8 to 6.5 and 13.5 to 15.2
80(41.2 %) Failed to respond
108(55.7 %) Within all limits
•Uc
—- 2(1.0 %) In warning zone
4(2.1 %) Outliers--*"
r
but within control
Statistic
Respondents
Non-outliers
Mean
10.30
Grand Avg 9.93
Std. Dev.
2.43
1.07
Variance
5.88
1.15
%Coef. ofVar.
23.56
10.81
% deviation of mean from known value
2.96
-0.72
Norm. dev. of mean from known value
0.12
-0.07
Median
9.90
9.87
% deviation of median from known value
-1.00
-1.33
Norm. dev. of median from known value
-0.04
-0.12
4(3.5 %) More than 3 norm. S.D. •«.
2(1.8 %) Between 2 and
. 100(87.7 %) Within 1 norm. S.D.
of known value
Between 1 and 2 norm. S.D.
-------
25/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Uranium (Natural)
Exper. Rnganal Normalized deviation
kflP Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
A
10.8
10.6
10.2
0.31
0.118
10.53
AE
11.2
11.4
11.5
0.15
0.059
11.37
AF
9.8
9.2
10.2
0.50
0.197
9.73
AH
9.0
9.4
9.4
0.23
0.079
•9.27
AI
AJ
10.4
8.8
8.7
0.95
0.335
9.30
AK
11.2
11.6
10.7
0.45
0.177
11.17
AL
10.2
10.8
10.9
0.38
?138
10.63
AO
WK^SlSl:
llllillll
lllilllllll!
AP
11.4
11.6
11.7
0.15
0.059
11.57
AR
8.3
7.9
8.1
0.20
0.079
8.10
AU
||^|||^J|:
PMtitt
AW
9.5
10.0
10.6
0.55
0.217
10.03
AZ
10.7
10.6
10.4
0.15
0.059
10.57
BA
9.7
9.2
8.7
0.50
0.197
9.20
BB
7.5
8.0
9.3
0.93
0.354
8.27
BC
9.6
9.6
9.6
0.00
0.000
9.60
BG
IHilBllli
BH
10.1
9.4
10.3
0.47
0.177
9.93
BK
9.4
9.4
10.0
0.35
°\118
9.60
BL
iSfpagg
BM
10.9
10.3
11.0
0.38
0.138
10.73
BN
8.7
9.9
10.7
1.01
0.394
9.77
BO
8.6
8.9
9.2
0.30
0.118
8.90
BS
1I8B1IB!
BW
111*111111^1
MRS!
MMMH
C
10.3
9.6
8.9
0.70
0.276
9.60
CA
9.9
8.9
9.8
0.55
0.197
9.53
CE
9.8
10.0
9.8
0.12
0.039
9.87
CG
10.5
11.0
11.9
0.71
0.276
11.13
CJ
10.0
10.0
11.0
0.58
0.197
10.33
CK
9.3
9.6
10.3
0.51
0.197
9.73
CM
9.6
10.0
9.7
0.21
0079
9.77
CO
B|8|B||S
MM
CP
I!:i!|lli®III
en
GQ
itiiiiiil
CS
10.7
10.2
10.3
0.26
0.098
10.40
CX
11.4 .
11.4
11.8
0.23
0.079 _
11.53
D
/o'i" ' " '¦ ¦
jilSSjgg^
Milifciili^l
l|lll|p||p
DB
9.9
12.4
11.6
1.28
0.492
11.30
DD
-*T ' S r
llflilBIIHll
¦H
DE
9.4
9.4
9.5
0.06
0.020
9.43
DG
llpiii**
DJ
Wm^mm
it§ltlt||li
DL
%Vv ' '.''' " '' ' •=•'''X
lllililtilt
0.35
0.83
-0.11
-0.38
0.31
0.79
-0.15
-0.42
-0.36
0.72
-0.40
0.67
0.41 0.37
0.95 0.90
-1.06 -1.10
0.06
0.37
-0.42
-0.96
-0.19
0.02
0.33
-0.46
-1.00
-0.23
< ' • X
000
-0.19
-0.04
-0.23
•frV* s^.i-.:
wk - ^ ¦¦¦> . y*
, v'< ~
«
0.47
-0.09
-0.59
0.42
-0.13
-0.64
m®uiPiB.„,
.: ••••>:¦•.-.; a:-"'
^v-'^SSSW'
*
-0.19
-0.23
-0.04
0.70
0.23
-0.11
-0.09
-0.23
-0.27
-0.08
0.65
0.19
-0.15
-0.13
£*y v\
4
nMMMISI
<1^4- % v^-
••
0.27
0.93
0.23
0.89
0.79 0.75
-0.29 -0.33
:fp^s0^f4M
liMS®
v./<..JV.K..{....K J,....^. •
• = No data submitted
0 s Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It 3 Above control limit
11 s Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
26/30
Uranium (Natural)
Lab Res. 1 Res. 2
Res. 3
Exper. Rng anal
Normalized deviation
DM
' • "
DO
10.0
10.0
°-17
0.059
DS :
- h "
, ,
. * '
Illllfli
DT
9.7
9.5
9.2
0.25
0.098
DZ
10.1
11.2
11.4
0.70
0.256
E
8.8
8.7
8.7
0.06
0.020
EB
10.5
10.9
11.1
0.31
0.118
EL
9.0
^ 10.0 _
10.6
0.81
0.315
BO
Hlfiisilii
'¦¦¦¦¦\ ''V /' >
ER
9.3
9.4
9.5
0.10
0.039
EV
llPPiS
tl|f®§r
EX
' 'A ' ;\
3iIiiilSII
1*i!ll*l
iililllllll
msn
ID
12.0
10.6
9.4
1.30
0.512
J
10.4
10.0
10.1
0.21
0.079
.TR
Q «
Q R
ma.
0.3K
0 118
9.90 -0.02 -0.06
9.47
10.90
8.73
10.83
9.87
-0.27
0.56
-0.69
0.52
-0.04
-0.31
0.52
-0.73
0.48
-0.08
0.039 9.40 -0.30 -0.35
/:':M.¦ ¦ :cc"-v
u>> v;- .¦.
8.67
-0.73
|ff.
-0.77
¦pnapn
MMppj
9.80 -0.07 -0.12
10.57 0.37 0.33
9.57 -0.21 -0.25
9.43
8.10
10.30
12.40
fmmmmmmmmssi
10.67 0.43 0.38
10.17 0.14
10.00 0.04
0.039 9.87 -0.04
s^ii^Slliii
0.158 11.23
JS 9.8 10.0 9.8 0.12
K 11.1 11.7 10.9 0.42
WMX&ttl.
0.44 0.158
11.10
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
It 3 Above control limit
JJ. s Below control limit
-------
27/30
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Uranium (Natural)
Lab
Res. 1 Res. 2
Gxper. Rug anal Normalized deviation
Res. 3 Sigma (R 4- SR) Average (grand-avg) (known) Tag
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
NA
NH
NI
NJ
NK
NO
NT
O
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PQ
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QY
QZ
RD
10.0
8.4
8.9
20.8
14.9
10.1
12.1
10.1
9.8
29.0
11.7
10.0
6.2
11.2
8.4
9.1
21.2
17.6
9.9
12.7
10.3
9.9
30.8
10.5
10.0
11.5
0.79
0.295
10.90
0.56
0.52
¦Mi
9.2
9.6
8.9
0.35
0.138
9.23
9.8
10.1
8.8
0.68
0.256
9.57
10.5
10.3
10.6
0.15
0.059
10.47
10.2
10.4
10.6
0.20
0.079
10.40
10.2
9.7
9.1
0.55
0.217
9.67
9.9
10.0
10.1
0.10
0.039
10.00
8.7
10.8
12.8
2.05
0.807
10.77
-0.40
-0.21
0.31
-0.44
-0.25
0.27
0.27
-0.15
0.04
0.48
0.23
-0.19
0.00
0.44
10.5 10.8
*"•• • 3F'$'y/4X- £%i ^ 1
6.2
8.7
9.2
21.0
15.3
9.7
10.8
9.7
10.0
27.0
12.3
8.0
9.6
liiii
6.7
°;17
0.15
0.20
1.46
0.20
0.97
0.31
0.10
1.90
0.92
1.15
0.62
hm mmmn
0.29
0.059 8.50 -0.82 -0.87
0.059
9.07 -0.50
t;vM&
-0.54
-,- ...,
0.079 21.00 6.39 8.35
. ;
0.079
0.374
0.118
9.90
11.87
10.03
-0.02
1.12
0.06
-0.06
1.08
sW^silwsSlaM
0.02
0.039
0.748
0.354
4.5
4.5
6.1
0.92
10.2
9.9
9.7
0.25
10.5
10.7
9.6
0.59
9.2
9.2
9.2
0.00
9.90 -0.02 -0.06
11.50 0.91 0.87
wmmmmmmimmF
0.394 9.33 -0.34 -0.38
0.236 10.30 0.22 0.17
0.098 6.37 -2.06 -2.10
0.315 5.03 -2.83 -2.87
0.098 9.93 0.00 -0.04
0.217 10.27 0.20 0.15
0.000 9.20 -0.42 -0.46
• = No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
II s Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
28/30
Uranium (Natural)
Lab Res. 1 Res. 2
Exper. Rng anal Normalized deviation
Res: 3 Sigma (R + SR) Average (grand-avg) (known) Tag
1 si
102
0.10
0.295
0.039
0.217
0.059
0.039
0.039
0.079
0.138
0.039
0.039
0.630
12.30
0.118
11.00
0.118 9.63
¦ ¦¦ -
0.138
0.158
0.591
0.236
0.532
0.551
0.059
0.138
0.098
0.039
,
0.039
0.079
11.33
10.13
9.30
8.80
0.059 10.00 0.04
*¦¦¦¦¦¦11m
0.158
¦PHI¦
0.059
0.217
M
• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
Above control limit
Below control limit
-------
29/30
i
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
Uranium (Natural)
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
VG
10.5
10.9
10.4
0.26
0.098
10.60
0.39 0.35
VI
13.5
13.4
12.9
0.32
0.118
13.27
1.93 1.89
VJ
VM
VN
illilil
Silt
* ' ,? r (
-------
CRD-LV Performance Evaluation: Blind-A, 18-Apr-1995
30/30
Uranium (Natural)
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
10.57
FZ
11.00
SM
11.53
CX
10.57
AZ
11.10
L
11.57
AP
10.60
VG
11.13
CG
11.87
PG
10.63
AL
11.17
AK
12.30
SL
10.67
ID
11.23
K
12.40
I
10.73
BM
11.30
DB
13,27
VI
10.77
NT
11.33
SX
15.83
X
VA
10.83
EB
11.33
KT
15.93
X
P
10.90
LT
11.37
AE
21.00
X
OZ
10.90
DZ
11.50
Q
28.93
X
PW
% responding labs
Frequency distribution
20-
10«
"T-
-6
—r-
+2
—i—
44
—r"
*6
-4
-2
% responding labs
Normalized deviation of the mean from the known value
Frequency distribution
20'
10-
0
-l—
-6
—r*
*6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• & No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft 3 Above control limit
U ee Below control limit
-------
United States Office of Research and EPA 600/R-95/116B
Environmental Protection Development August 1995
Agency Washington, DC 20460
Blind-B Performance
Evaluation Study
A Statistical Evaluation of
the April 18,1995 Data
RECEIVED
\~ 1
AUG I 4 I995
pjc;? i, \f n":""w;r"
0593RS094 COM16B
-------
Blind-B
Performance Evaluation Study
April 18, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Radiation Sciences Branch (CRD-LV)
Performance Evaluation Study for Bllnd-B; April 18,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141
Sincerely,
George Dilbeck
Chemist
Radioanalysis Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995 1/44
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the mmimiim of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the '¦
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, CRD-LV, 702/798-2104.
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
3/44
Gross Beta Statistical Summary 194 Participants
The known value of this nuclide is 86.6 pCi/1 with an expected precision of 10.0; the control limits
are 69.3 to 103.9; the warning regions are 69.3 to 75.0 and 98.2 to 103.9
30(15.5 %) Failed to respond •«
8(4.1 %) Outliers '
19(9.8 %) Out of control•
but not an outlier
Statistic
118(80.8 %) Within all limits
Respondents
**• 19(9.8 %) In warning zone
but wlthbn control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
94.96
83.40
6954.79
87.83
9.65
0.10
88.02
1.64
0.02
Grand Avg 86.93
10.42
108.56
11.99
0.38
0:03
87.97
1.58
0.13
27(16.5 %) More than 3 norm. S.O. ,
19(11.6 %) Between 2 and 3 norm. S.D.*
,70(42.7 %) Within 1 norm. S.D.
of known value
48(29.3 %) Between 1 and 2 norm. S.D.
-------
4/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Gross Beta
Lab Res. 1
A
AE
AF
AH
AI
AJ
AK
AL
AO
CM
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
91.2 90.1 90.6
66.3 70.0 70.1
89.0 86.0 95.0
91.0 93.1 78.2
97.7 96.9 86.3
83.2 87.4 86.1
103.7 97.7 99.7
0.55
0.065
90.63
0.64
0.70
2.17
0.224
68.80
-3.14
-3.08 JL
4.58
0.532
90.00
0.53
0.59
8.06
0.880
87.43 _
0.09
0.14
'<*:•r-i
ilplillllliillil
6.36
0.673
93.63
1.16
1.22
2.15
0.248
85.57
-0.24
-0.18
3.05
0.354
100.37
2.33
2.38
Spill
fl«f
AP
90.8
90.4
87.3
1.92
0.207
89.50
0.45
0.50
AR
103.0
92.2
93.9
5.81
0.638
96.37
1.63
1.69
AU
107.0
103.0
108.0
2.65
0.295
106.00
3.30
3.36
AW
92.9
90.1
90.0
1.65
0.171
91.00
0.70
0.76
AZ
71.0
62.7
60.5
5.54
0.620
64.73
-3.84
-3.79
BA
86.6
85.7
87.7
1.00
0.118
86.67
-0.05
0.01
BB
68.6
69.8
69.2
0.60
0.071
69.20
-3.07
-3.01
BC
BG
81.8
83.1
'ua'v' ^VV• .:
83.3
•-v. ¦ s-v . -
0.81
0.089
82.73
-0.73
-0.61
BH
82.2
83.5
83.9
0.89 "
0.100
83.20
-0.65
-0.59
BK
BL
BM
91.4
90.8
95.6
90.2
93.0 ^
iiS'l&S&l
89.8
2.12
0.50
0.248
0.059
93.33
msppntsi
90.27
1.11
0.58
1.17
0.64
BN
90.0
90.5
92.1
1.10
0.124
90.87
0.68
0.74
BO
88.1
91.1
86.9
2.16
0.248
88.70
0.31
0.36
BS
BW
95.9
44.0
97.6
62.0
94.3
30.0
1.65
16.04
0.195
2.695
95.93
45.33
1.56
*7.20
1.62
•7.15
C
97.1
96.5
95.9
0.60
0.071
96.50
1.66
1.71
CA
78.2
71.9
74.2
3.19
0.372
74.77
-2.11
-2.05
CE
94.0
91.5
91.1
1.57
0.171
92.20
0.91
0.97
CG
90.1
85.6
88.4
2.27
0.266
88.03
0.19
0.25
CJ
78.0
83.0
80.0
2.52
0.295
80.33
-1.14
-1.09
CK
85.1
9L1
97.0
5.95
0.703
91.07
0.72
0.77
It
U
-•
»
x
CO
CP
78.0
342.0
78.0'
468.0
72.7
406.0
3.06
63.00
0.313
13.271
76.23
405.00
-1.85
55.09
-1.80
55.15
CQ
85.0
86.0
86.0
0.58
0.059
85.67
-0.22
-0.16
CS
77.0
83.0
88.1
5.56
0.656
82.70
-0.73
-0.68
cx
90.3
92.8
93.5
1.68
0.189
92.20
0.91
0.97
D
96.0
92.3
93.8
1.86
0.219
94.03
1.23
1.29
DB
98.0
98.0
101.0
1.73
0.177
99.00
2.09
2.15
DD
91.9
87.6
89.3
2.17
0.254
89.60
0.46
0.52
DE
DG
DJ
89.0
89.0
IPPHHI
¦WteMM
89.1
0.06
'5 ,¦£[.. v-v < x ,. tA'
¦x&A&c
0.006
89.03 _
0.36
0.42
illllpll
DL
91.0
89.0
88.0
1.53
0.177
89.33
0.42
0.47
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft s Above control limit
Ji = Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
5/44
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Normalized deviation
DM
DO
DS
DT
DZ
E
EB
EL
EO
BIB
EV'^ x
EX
FF
FJ
FL
FN
FU
FZ
GE
GI
75.7
77.9
80.2
2.25
0.266
_77;93
"1-56
-1.50
. - , '•'^4 ||$5v
76.0
76.4
77.6
0.83
0.095
76.67
-1.78
-1.72
106.0
100.0
106.0
3.46
0.354
104.00
2.96
3.01
90.6
91.2
95.0
2.39
0.260
92.27
0.92
0.98
90.0
90.0
90.0
0.00
0.000
90.00
0.53
0.59
91.5
89.9
89.9
0.92
0.095
90.43
0.61
0.66
IT
86.0
86.0
90.0
2.31
0.236
MS
81.3
81.4
5?
1.01
^).106
f|Jg|i|J
67.0
73 0
3.46
0.354
75.8
77.1
88.5
6.99
0.750
70.3
75.8
75.2
3.02
0.325
90.9
88.8
87.8
1.58
0.183
74.2
72.0
75.5
1.77
0.207
85.0
90.0
89.0
2.65
0.295
87.0
88.0
88.0
0.58
0.059
87.33
80.77
0.07
¦1.07
0.13
-1.01
v*.. .
GQ
85.3
78.5
80.0
3.57
GT
67.9
66.4
67.1
0.75
GZ
122.7
123.5
126.2
1.83
HI
79.0
85.0
75.0
5.03
HK
93.1
98.7
93.5
3.12
HL
81.0
81.0
81.0
0.00
HP
87.2
86.7
93.2
3.62
I
78.8
77.9
76.8
1.00
IC
75.5
80.0
78.4s
2.28
ID
76.4
80.6
78.6
2.10
J
87.8
88.9
90.3
1.25
JE
100.1
91.6
95.8
4.25
JG
95.3
94.6
92.5
1.46
JN
76.5
75.2
75.8
0.65
JQ
121.5
114.9
120.3
3.52
JS
102.8
104.9
104.2
1.07
JY
79.4
76.9
78.4
1.26
K
70.2
72.1
72.1
1.10
KE
80.4
82.2
78.9
1.65
KT
96.0
96.0
95.0
0.58
KX
90.0
91.0
93.0
1.53
L
99.0
96.0
98.0
1.53
LF
75.0
77.0
73.0
2.00
LG
LL
84.2
81.9
81.6
1.42
0.402
0.089
0.207
0.591
0.331
0.000
0.384
0.118
0.266
0.248
0.148
0.502
0.165
0.077
0.390
0.124
0.148
0.112
0.195
0.059
0.177
0.177
0.236
0.154
71.00
-2.76
-2.70
80.47
-1.12
-1.06
73.77
-2.28
-2.22
89.17
0.39
0.44
73.90
-2.26
-2.20
88.00
0.19
0.24
87.67
0.13
0.18
VVV' v's^, TsV
81.27
-0.98
-0*92
67.13
-3.43
-3.37
79.67
-1.26
-1.20
95.10
1.42
1.47
81.00
-1.03
-0.97
89.03
0.36
0.42
77.83
-1.58
-1.52
77.97
-1.55
-1.50
78.53
-1.45
-1.40
89.00
0.36
0.42
95.83
1.54
1.60
94.13
1.25
1.30
75.83
-1.92
-1.86
118.90
5.54
5.59
103.97
2.95
3.01
78.23
-1.51
-1.45
71.47
-2.68
-2.62
80.50
-1.11
-1.06
95.67
1.51
1.57
91.33
0.76
0.82
97.67
1.86
1.92
75.00
-2.07
-2.01
wmmmwmmm
SIP1IP
82.57
-0.76
-0.70
tr
ir
• a No data submitted
TAG SYMBOLS
tr
s Above control limit
0 3 Insufficient data
«
x = Determined to be an outlier
n
= Below control limit
-------
(t
6/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Gross Beta
'
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LR
94.0
91.0
91.0
1.73
0.177
92.00
0.88
0.94
LT
84.6
75.7
79.9
4.45
0.526
80.07
-1.19
-1.13
M
104.0
96.0
100.0
4.00
0.473
100.00
2.26
2.32
MA
37.0
41.0
46.0
4.00
0.473
41.00
•7.96
":'n Qn v
MF
77.0
75.1
76.4
0.97
0.H2
76.17
-1.86
-1.81
MP
lll!l|l||l^il|
¦m
Itlilll
;V'
$
MQ
87.0
88.0
88.0
0.58
0.059
87.67
0.13
0.18
MV
83.0
87.0
88.0
2.65
0.295
86.00
-0.16
-0.10
MY
SfpiiipfPpI
|f|f||ltlg|
¦¦¦¦111
.
N
89.2
89.6
89.1
0.27
0.030
89.30
0.41
0.47
NA
117.8
121.4
121.0
1.97
0.213
120.07
5.74
5.80 It
NH
83.0
81.0
88.0
3.61
0.413
84.00
-0.51
-0.45
NI
IB*
wmmm
mmmm
Itsppsi
NJ
81.0
83.0
81.0
1.15
0.118
81.67
-0.91
-0.85
NK
94.4
98.7
73.1
13.71
1.975
88.73
0.31
0.37
NO
98.6
104.0
110.5
5.96
0.703
104.37
3.02
3.08 tt
NT
88.0
86.6
88.6
1.03
0.118
87.73
0.14
0.20 ;
O
80.7
79.9
79.6
0.57
0.065
80.07
-1.19
-1.13
OF
89.5
89.9
86.0
2.15
0.230
88.47
0.27
0.32
OS
_ 100.7
98.6
98.4
1.27
0.136
99.23
2.13
2.19
OX
OY
1143.0
IHPHPH
1090.0 1037.0 53.00
¦vnii
n.021
*
1090.00 173.74 173.79 x
OZ
164.2
174.0 172.8
. 5.36 0.570
170.33 14.45
14.50 X
P
101.0
102.0
101.2
0.53
0.059
101.40
2.51
2.56
PA
90.2
84.9
90.8
3.25
0.348
88.63
0.30
0.35
PB
99.8
97.1
100.0
1.62
0.171
98.97
2.08
2.14
PG
88.9
. 90-7
92.3
1.70
0.201
90.63
0.64
0.70 ^
PI
mi
* /* • '
PM
92.1
88.3
90.1
1.90
0.224
90.17
0.56
0.62
PQ
86.9
86.6
86.9
0.17
0.018
86.80
-0.02
0.03
PR
69.0
71.0
70.0
1.00
0.118
70.00
-2.93
-2.88
PV
77.2
78.3
83.5
3.37
0.372
79.67
-1.26
-1.20
PW
IlIliHMlHiMi
IMK
Q
97.7
95.9
96.8
0.90
0.106
96.80
1.71
1.77
QC
8.2
8.3.
7.9
0.21
0.024 8.131 -13.65 .13.59 *
QJ
86.0
87.4
86.7
0.70
0.083
86.70
-0.04
0.02
QP
98.0
100.0
95.0
2.52
0.295
97.67
1.86
1.92
QQ
89.0
90.6
90.0
0.81
0.095
89.87
0.51
0.57
QT
84.2
86.9
88.3
2.08
0.242
86.47
-0.08
-0.02
QU
76.0
80.8
79.9
2.55
0.284
78.90
-1.39
-1.33
QW
86.4
85.7
81.3
2.76
0.301
84.47
-0.43
-0.37
QX
98.6
98.2
95.7
1.57
0.171
97.50
1.83
1.89
QY
flBBS
' .. . Cv° 'k " - I
HWiilll!
MmWMHPill
""swf, :.™i
QZ
100.6
99.2
101.2
1.03
0.118
100.33
2.32
2.38
RD
80.0
76.0
81.0
2.65
0.295
79.00
-1.37
-1.32
• =
No data submitted
TAG SYMBOLS
It a Above control limit
i_0 =
Insufficient data
x 3 Determined to be an outlier
II s Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
7/44
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
RE
67.1
70.1
65.8
2.21
0.254
67.67
-3.34
-3.28
U
RF
84.5
85.6
89.5
2.63
0.295
86.53
¦0.07
-0.01
RG
93.0
93.0
96.0
1.73
0.177
94.00
1.22
1.28
RJ
v 1 V
ippp^*p»
jftisiiif
RK
62.1
70.8
61.8
5.11
0.532
64L90
-3.82
-3.76
NH1
li
RP
¦¦¦¦¦¦
•
RR
82.0
83.0
83.0
0.58
0.059
82.67
-0.74
-0.68
RV
91.0
99.0
99.0
4.62
0.473
96.33
1.63
1.69
RZ
91.2
90.2
91.6
0.72
0.083
91.00
0.70
0.76
S
97.3
99.9
97.8
1.38
0.154
98.33
1.98
2.03
sc
81.1
80.3
86.8
3.54
0.384
82.73
-0.73
-0.67
SD
65.5
68.1
67.3
1.33
0.154
66.97
-3.46
-3.40
U
SF
96.5
90.7
82.5
7.03
0.827
89.90
0.51
0.57
SI
82.0
84.8
85.5
1.85
0.207
84.10
-0.49
-0.43
SL
107.0
75.5
104.0
17.39
2.639
95.50
1.48
1.54
SM
84.5
84.1
83.6
0.45
0.053
84.07
-0.50
-0.44
SN
79.9
82.3
85.4
2.76
0.325
82.53
-0.76
-0.170
SO
87.8
85.5
89.3
1.91
0.224
87.53
0.10
0.16
SR
82.0
82.0
75.0
4.04
0.413
79.67
-1.26
-1.20
SS
79.8
75.3
72.0
3.92
0.461
75.70
-1.95
-1.89
ST
85.6
85.3
84.9
0.35
0.041
85.27
-0.29
-0.23
sx
74.5
100.5
88.8
13.02
2.020
87.93
0.17
0.23
SZ
117.5
119.8
122.1
2.30
0.272
119.80
5.69
5.75
tr
T
85.0
82.1
85.0
1.67
0.171
84.03
-0.50
TD
74.2
88.0
72.2
8.60
0.933
78.13
-1.52
-1.47
TE
71.0
65.0
68.0
3.00
0.354
68.00
-3.28
-3.22
u
TH
94.0
96.0
96.0
1.15
0.118
95.33
1.46
1.51
TI
90.1
97.4
90.3
4.16
0.431
92.60
0.98
1.04
TL
96.7
97.9
98.8
1.05
0.124
97.80
1.88
1.94
TN
91.2
100.6
86.1
7.36
0.856
92.63
0.99
1.05
TQ
76.5
74.9
72.2
2.17
0.254
74.53
-2.15
-2.09
TS
107.1
104.9
106.4
1.12
0.130
106.13
3.33
3.38
tr
TY
80.0
79.0
81.0
1.00
0.118
80.00
-1.20
-1.14
U
85.4
90.3
92.1
3.47
0.396
89.27
0.40
0.46
;UA|I
130.0
128.0 -
125.0
9K9
z.o<
0.295
1«8L
7.06
7.11
- X.
UE
91.9
96.6
89.5
3.61
0.419
92.67
0.99
~ 1.05
UG
llpllllipiii
ajMBEBi
¦flgM
m
UK
^$|||^|^
mni
•
UN
78.9 •
68 2
53 3
12.86
1.975
66.80
-3.49
-3.43
"1
UP
90.3
92.5
92.4
1.24
0.130
91.73
0.83
0.89
UQ
89.0
90.0
90.0
0.58
0.059
89.67
0.47
0.53
uw
92.5
93.7
93.6
0.67
0.071
93.27
1.10
1.15
UY
87.9
86.1
87.1
0.90
0.106
87.03
0.02
0.08
VA
75.5
52.0
70.7
12.42
1.739
66.07
-3.61
-3.56
f
VC
IS&if
igMp
vt
-------
C(
8/44
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
^
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
VG
71.6
70.0
68.0
1.80
0.213
69.87
-2.96 -2.90
VI
69.3
67.6
68.9
0.89
0.100
68.60
-3.17 -3.12
VJ
76.2
79.8
76.8
0.213
77.60
-1.62 -1.56
«w*fiill|I||JJ>^^ VVjV «<¦'•¦, 0 > "v
Ifligg
plMlllIM
ig|||§
1 -
VN
r , " s A
* 1 s
: -'V
vo
90.5
132.0
85.3
25.59
4.349
102.60
2.71 2.77
VQ
< r,.- ,
lltStll
311
¦
•
VT
91.8
89.4
93.8
2.20
0.260
91.67
0.82 0.88
vu
llitii
IHBIHil
I:
#illf
«If
#
w
95.1
92.8
93.1
1.59
0.171
93.87
1.20 1.26
WE
92.1
88.8
89.5
1.74
0.195
90.13
0.55 0.61
WF
72.3
74.5
76.3
2.00
0.236
74.37
-2.18 -2.12
X
90.9
86.3
84.9
3.14
0.354
87.37
0.08 0.13
z
liillli
llll
Ipllpill!
Data sorted by Laboratory Averag
r«
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
8.13
X
QC
76.67
DS
82.73
BC
41.00
X
MA
77.60
VJ
83.20
BH
45.33
X
BW
77.83
I
84.00
NH
64.73
Jl
AZ
77.93
DM
84.03
T
64.90
u
RK
77.97
IC
84.07
SM
66.07
4
VA
78.13
TD
84.10
SI
66.80
11
UN
78.23
JY
84.47
QW
66.97
Ji
SD
78.53
ID
85.27
ST
67.13
Ji
GT
78.90
QU
85.57
AK
67.67
u
RE
79.00
RD
85.67
CQ
68.00
TE
79.67
SR
86.00
MV
68.60
li
VI
79.67
PV
86.47
QT
68.80
11
AE
79.67
m
86.53
RF
69.20
11
BB
80.00
TY
86.67
BA
69.87
VG
80.07
o
86.70
QJ
70.00
PR
80.07
LT
86.80
PQ
71.00
FF
80.33
CJ
87.03
UY
71.47
K
80.47
FJ
87.33
EO
73.77
FL
80.50
KE
87.37
X
73.90
FU
80.77
EV
87.43
AH
74.37
WF
81.00
HL
87.53
SO
74.53
TQ
81.27
GQ
87.67
MQ
74.77
CA
81.67
NJ
87.67
GE
75.00
LF
82.53
SN
87.73
NT
75.70
SS
82.57
LL
87.93
SX
75.83
JN
82.67
RR
88.00
FZ
76.17
MF
82.70
CS
88.03
CG
76.23
CO
82.73
SC
88.47
OF
• a No data submitted
TAG SYMBOLS
It a Above control limit
0 = Insufficient data
X
= Determined to be an outlier
II a Below control limit
-------
(f
¦
CRD-LV Performance Evaluation: Blind-B,
k.
18-Apr-1995
9/44
Gross Beta
Data sorted by Laboratory Averag
:©.
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
88.63
PA
91.07
CK
96.80
Q
88.70
BO
91.33
KX
97.50
QX
88.73
NK
91.67
VT
97.67
QP
89.00
J
91.73
UP
97.67
L
89.03
HP
92.00
LR
97.80
TL
89.03
DE
92.20
CX
98.33
S
89.17
FN
92.20
CE
98.97
PB
89.27
U
92.27
DZ
99.00
DB
89.30
N
92.60
TI
99.23
OS
89.33
DL
92.63
TN
100.00
M
89.50
AP
92.67
UE
100.33
QZ
89.60
DD
93.27
UW
100.37
AL
89.67
UQ
93.33
BK
101.40
P
89.87
QQ
93.63
AJ
102.60
VO
89.90
SF
93.87
W
103.97
IT
JS
90.00
E
94.00
RG
*104.00
ft
DT
90.00
AF
94.03
D
104.37
ft
NO
90.13
WE
94.13
JG
106.00
ft
AU
90.17
PM
95.10
HE
106.13
ft
TS
90.27
BM
95.33
TH
118.90
ft
JQ
90.43
EB
95.50
SL
119.80
ft
SZ
90.63
PG
95.67
KT
120.07
ft
NA
90.63
A
95.83
JE
124.13
X
GZ
90.87
BN
95.93
BS
127.67
X
UA
91.00
RZ
96.33
RV
170.33
X
OZ
91.00
AW
96.37
AR
405.00
X
CP
96.50
C
1090.00
X
OY
% responding labs
Frequency distribution
HMimllMLl.
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
-6
% responding labs
Frequency distribution
O-I&r
-~""T—
f-—f—
JHm.
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• a No data submitted
0 a Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
JJ- a Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
3
10/44
Strontium-89 Statistical Summary 194 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 5.0; the control limits
are 11.3 to 28.7; the warning regions are 11.3 to 14.2 and 25.8 to 28.7
107(55.2 %) Failed to respond
3(1.5%) Outliers -------
3(1.5 %) Out of control ---*"
but not an outlier
Statistic
; 75(38.7 %) Within all limits
Respondents
6(3.1 %) In warning zone
but wlthlh control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known Value
Norm. dev. of median from known value
18.65
3.95
15.59
21.17
-6.76
-0.34
19.67
-1.67
-0.08
Grand Avg 19.09
3.23
10.46
16.95
-4.56
-0.28
19.83
-0.83
-0.05
6(6.9 %) More than 3 norm. S.D.
6(6.9 %) Between 2 and 3 norm. S.D
58(66.7 %) Within 1 norm. S.D.
of known value
17(19.5 %) Between 1 and 2 norm. S.D.
-------
f( '
11/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
?v
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
18.0
20.0
19.0
1.00
0.236
19.00
-0.03
-0.35
AE
22.0
23.0
22.0
0.58
0.118
22.33
1.12
0.81
AF
20.0
21.0
20.0
0.58
0.118
20.33
0.43
0.12
AH
">
lillisil
#
At
V:; • : .y ¦
IppplS^p
'
' •
AJ
23.0
16.0
17.0
3.79
0.827
18.67
-0.15
-0.46
AK
20.0
20.0
22.0
1.15
0.236
20.67
0.55
0.23
AL
23.0
24.0
23.0
0.58
0.118
23.33
1.47
1.15
AO
AP
¦I,.'J' \
¦*5
•
•
AR
.'y.' >; $$$$$$$;
yyy- 'y';:
wmmmmwm
AU
20.0
22.0
24.0
2.00
0.473
2200
1.01
0.69
AW
20.0
19.0
17.0
1.53
0.354
18.67
-0.15
-0.46
AZ
20:0
20.0
22.0
1.15
0.236
20.67
0.55
0.23
BA
20,0
20.0
21.0
0.58
0.118
20.33
0.43
0.12
BB
SlllSi®
-y~<
V+ :(/Jj
BC
18.0
18.0
17.0
0.58
0.118
17.67
-0.49
-0.81
BO
' ? * v <• ^ *"• •. f, r.
-
•
BH
21.0
21.0
20.0
0.58
0118
20.67
0.55
0.23
BK
wiiiiii
•
BL
21.0
23.0
17.0
3.06
0.709
20.33
0.43
0.12
BM
18.0
20.0
19.0
100
0.236
19.00
-0.03
-0.35
BN
V i '' /• '
iifciiiKii!
yp '¦;*j& '»
BO
21.0
20.0
20.0
0.58
0.118
20.33
0.43
0.12
BS
l|Bll£;g|
llggllllllll
BW
- '} f'--y ^6
' • ' • . • • •o? ¦/.. . •
v:\^-
? "¦ '•¦•/. y>- ^'. <¦> v'
•
C
25.0
23.0
220
1.53
0.354
23.33
147
1.15
CA
17.0
17.0
17.0
O.OO
0.000
17.00
-0.72
-1.04
CE
•>fctv"v ,"*S'
CG
22.0
23.0
23.0
0.58
0.118
22.67
1.24
0.92
CJ
20.0
20.0
22.0
1.15
0.236
20.67
0.55
0.23
CK
11.0
11.0
20.0
5.20
1.120
14.00
-1.76
-2.08
CM
# ' \
lllf'yllllB
•
CO
18.0
17.0
18.0
0.58
0.118
17.67
-0.49
-0.81
CP
23.0
26.0
28.0
2.52
0.591
25.67
2.28
1.96
CQ
17.0
18.0
18.0
0.58
0.118
17.67
-0.49
-0.81
CS
15.0
19.0
19.0
2.31
0.473
17.67
-0.49
-0.81
CX
14.0
16.0
19.0
2.52
0.591
16.33
-0.95
Hfiiilti!WmM
-1.27
D
yyy'j*|^;
- UyyVy"
\ _ "o .> \ ~ • ¦•.'
llglgB
•
DB
. • 'S>1 ¦.
-J / A '*¦>
yS'Syyiwiltt
:¦<>.*&•? \ £ a- . -. •<
A >; i; ••':«? ^ • 'J- vs*
DD
21.0
20.0
20.0
0.58
0.118
20.33
0 43
0^12
DE
20.0
20.0
21.0
0.58
0.118
20.33
0.43
0.12
DG
12.0
12.0
12.0
0.00
0.000
1200
-2.46
-2.77
DJ
-
- X ' "
"¦ s' '
•
DL
¦ *
vi^
¦-
•
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
0 =
^
Insufficient data
X 3
Determined to be an outlier
JJ = Below control limit
¦y
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
12/44
Strontium-89
Lab Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
DM
v,V,£' ^
\ . ";, V
DO
19.0
21.°
20.0
1.00
0.236
20.00
0.32
0.00
DS
<¦:¦ '-
* '*' „i ' ':
v ''V-v
mmm
Jltfif
DT
20.0
18.0
17.0
1.53
0.354
18.33
-0.26
-0.58
DZ
20.0
22.0
21.0
1.00
0.236
21.00
0.66
0.35
E
20.0
19.0
20.0
0.58
0.118
19.67
0.20
-0.12
EB
20.0
25.0
22.0
2.52
0.591
22.33
1.12
0.81
EL
27.0
24.0
24.0
1.73
0.354
25.00
2.05
1.73
£0
EB
EV
EX
FF
FJ
*.FL*
FN
FU
FZ
GE
GI
GQ
GT
GZ
HI
HK
HL
HP
I
IC
ID
J
JE
JG
JN
JQ
JS
JY
K
KE
KT
KX
L
LF
LG
LL
24.0
' "
25.0 1.00
Wft! K#
24.00
1
. • ' t!
^fp§§tig
17.0
17.0
17.0
0.00 0.000 20.00 0.32 0.00
'. ¦/% ;¦ .'>{• ';n's|r®;¦> % ¦' ?¦'
¦' • £5' •" A" ¦ '¦< ¦ ' V\•¦'••¦ \'"£$¦ >!
\ ••;• :K:*. • - '
0.000 17.00 -0 72 " -¦•-¦¦-
0.00
25.0
22.0
17.0
22.0
22.0
18.0
3.51
0.00
18.0
22.0
17.0
20.0 20.0_ 21.0 0.58
¦• 8:6¥P^V5W^PiO ' 1.53
• - ;>-"^ \ -
0.827
0.000
.. jp®
^,,,,^lliiS
p^jiisii ilpp
mmmm
21.67 0.89 0.58
22.00 1.01 0.69
0.58 0.118 17.33 -0.61 -0.92
0.118 20.33 0.43 0.12 __
6.33
0.354-
-4.42
17.0 16.0 16.0
19.0 19.0 22.0
0.118 16.33
0.58
1.73 0.354
21.0
19.0
21.0
20.0
21.0
21.0
20.00 "0.32' 000
0.00 0.000 21.00
1.00 0.236 20.00
LmxWm§SMirn
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It = Above control limit
JJ = Below control limit
-------
13/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Strontium-89
Lab Res. 1
Res. 2 Res. 3
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
LR
LT
M
MAI
MF
MP
MQ
MV
MY
N
NA
NH
NI
NJ
NK
NO
NT
O
OF
OS
OX
OY
02
P
PA
PB
PG
PI
PM
PQ
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QY
QZ
RD
9.0
26.0
19.0
21.0
"V r < ^ ~ X t v> a + < ' , * * ?V *"?
• • • ' • . ' " 0 -
90 110 115 0-236 9.67 -3.26 -3.58 V
25-0 28.0 1.53 0.354 26.33 2.51 2.19
Igiil
• *
20.0
20.0 0.58 0.118
19.67 0.20 -0;12
21.0 20.0 0.58 0.118
20.67 0.55 0.23
:;l|s
•v-i.
17.0
18.0
/St'
18.0 0.58 0.118 17.67 -0.49 -0.81
14.0 1.00 0.236 13.00 -2.11 -2.42
22.0 0.58 0.118 21.33 0.78 0.46
20.0
20.0 20.0 0.00 0.000
20.00 0.32
0.00
17.0
18.0
22.0
5.69
1.570
21.67
Iplippill
»PiP
2.00
0.473
20.00
JSSJSSS1
i|li®Pt®
"7 *
Kiwi®!
0.32 0.00
16.0
18.0
12.0 13.0 2.08 0.473
12.0 14.0 3.06 0.709
13.67 -1.88
14.67 -1.53
* '"" " ' * ''
-2.19
-1.85
.; . • .,¦ ;v<;.
•• ¦ s--;^ «: t - !' Xj*;< •
20.0 21.0 23.0 1.53 0.354 21.33 0.78 0.46
^.¦.¦•¦¦>vv. ¦¦••••¦•¦¦•; :•¦••¦ ¦ ¦ ¦ ¦: ¦:.-, /,.....,.,.;. ..\ v f,-: ^,.,.,........ X- • • v. .-.v....... wfr.<. *>¦<•>¦•¦. ¦/• . •¦-¦''< ^ >¦•¦•¦•.. •¦••¦••¦ ¦•¦ -v.> •¦•:•-. /¦ -...-.,.-. .-.V, ¦-, ¦
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x 3 Determined to be an outlier
IT s Above control limit
<11 = Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
14/44
Strontium-89
Lab Res. 1
Res. 2
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R » SR) Average (grand-avg) (known) Tag
RE
RF
EG
SL
SM
SN
SO
SR
ss
ST
SX
sz
T
TD
TE
TH
TI
TL
TN
TQ
TS
TY
U
UA
UE
UG
UK
UN
UP
UQ
UW
UY
VA
VG
I - -.try- . sf .<¦ «<> j-jipiJ-fJfyZto&t
RJ
s " ' '
v._'•
RK
6.0
6.0
5.0
0.58
0.118
RP
filiilBl
RR
21.0
21.0
20.0
0.58
0.118
RV
19.0
20.0
_ 20.0
0.58
0.118
R*U\;
""'< —•••.•? v; • • • 'v.' y?£':
• = No data submitted
0 == Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It 3 Above control limit
U> a Below control limit
-------
15/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Stronti um-89
Lab
Res. 1 Res. 2 Res. 3
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average - (grand-avg) (known) Tag
VG
VI
VJ
VM
VN
vo
VQ
VT
VU
W
WE
WF
X
Z
15.0
13.0
16.0
8.0
16.0
11.0
0.58
2.52
19.0
6.C
17.0
19.0
8.0
19.0
wwtwm
18.0
Pill
7.0
15.0
0.118
iSigli
mm
0.58 0.118 18.67 -0.15
2.00 0.473 17.00 -0.72 -1.04
8'®:
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.67
X
RK
17.67
CQ
20.33
BA
6.33
X
cllfi
17.67
CO
20.33
AF
7.00
X
WF
17.67
BC
20.67
UN
9.67
U
LT
18.00
SF
20.67
RR
10.67
U
VI
18.33
S
20.67
N
10.67
TS
18.33
DT
20.67
CJ
12.00
DG
18.67
W
20.67
BH
13.00
NO
18.67
TE
20.67
AZ
13.67
SI
18.67
AW
20.67
AK
13.67
QU
18.67
AJ
21.00
UE
14.00
CK
19.00
TQ
21.00
SM
14.67
QW
19.00
BM
21.00
KX
15.67
VG
19.00
A
21.00
DZ
15.67
TD
19.67
SC
21.33
QZ
16.33
ti
19.67
RV
21.33
NT
16.33
JS
19.67
MQ
21.67
UW
16.33
cx
19.67
E
21.67
TL
16.67
UP
20.00
Q
21.67
PV
16.67
u
20.00
PB
21.67
HP
17.00
X
20.00
L
22.00
I
17.00
HK
20.00
K
22.00
AU
17.00
CA
20.00
GQ
22.33
EB
17.33
SD
20.00
DO
22.33
AE
17.33
IC
20.33
J
22.67
CG
17.67
T
20.33
DE
23.33
C
17.67
ss
20.33
DD
23.33
AL
17.67
NJ
20.33
BO
24.00
ST
17.67
CS
20.33
BL
24.00
FU
• s No data submitted
TAG SYMBOLS
tr
3 Above control limit
0 = Insufficient data
x s Determined to be an outlier
= Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
16/44
Strontium-89
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab
Average
JTag.
Lab
25.00
EL
25.67
CP
26.33
M
% responding labs
Frequency distribution
10-
-4 -2 0 +2 *4
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
-4 -2 o +2 +4
Normalized deviation of the mean from the grand average
V *6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
•li s Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
17/44
Strontium-90 Statistical Summary 194 Participants
The known value of this nuclide is 15.0 pCi/1 with an expected precision of 5.0; the control limits
are 6.3 to 23.7; the warning regions are 6.3 to 9.2 and 20.8 to 23.7
100(51.5 %) Failed to respond,
3(1.5 %) Outliers --------
2(1.0 %) Out of control
but not an outlier
Statistic
83(42.8 %) Within all limits
Respondents
*— 6(3.1 %) In warning zone
but within control
Non-outliers
Mean
14.63
Grand Avg 14.16
Std. Dev.
3.77
2.74
Variance
14.21
7.48
% Coef. of Var.
25.76
19.31
% deviation of mean from known value
-2.43
-5.57
Norm. dev. of mean from known value
-0.10
-0.31
Median
14.33
14.00
% deviation of median from known value
-4.44
-6.67
Norm. dev. of median from known value
-0.18
-0.37
5(5.3 %) More than 3 norm. S.D. »-
6(9.4 %) Between 2 and 3 norm. S.D
. 73(77.7 %) Within 1 norm. S.D.
of Known value
10(10.6 %) Between 1 and 2 norm. S.D.
-------
18/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Strontium-90
Lab
A
AE
AF
AH
Al
AJ
AK
AL
AO
AP
AR
BG
BH
BK
BL
BM
CM
Res. 1
14.0
11.0
14.0
13.0
15.0
13.0
14.0
15.0
15.0
Res. 2
Res. 3
.Exper.
Sigma
Rnganal
(R + SR)
13.0
15.0
14.0
15.0
16.0
13.0
14.0
15.0
14.0
15.0
15.0
13.0
0.58
2.31
0.00
1.15
0.58
0.00
0.118
0.473
0.000
0.236
0.118
0.000
Normalized deviation
Average (grand-avg) (known) Tag
13.67 -0.17 -0.46
13.67 -0.17
14.00 -0.06
14.33 0.06 -0.23
15.33 0.40 0.12
13.00 -0.40 -0.69
-0.46
-0.35
- a
AU
14.0
13.0
14.0
0.58
0.118
13.67
-0.17
-0.46
AW
17.0
18.0
17.0
0.58
0.118
17.33
1.10
0.81
AZ
14.0
15.0
15.0
0.58
0.118
14.67
0.17
-0.12
BA
13.0
14.0
14.0
0.58
0.118
13.67
-0.17
-0.46
BB
12.0
13.0
12.0
0.58
0.118
12.33
-0.63
-0.92
BC
14.0
14.0
13.0
0.58
0.118
13.67
-0.17
-0.46
14.0
13.0
14.0
15.0
18.0
15.0
0.58
2.52
0.58
0.118
14.33
0.06
-0.23
0.591
0.118
15.33
14.67
0.40
0.17
0.12
-0.12
BN
BO
BS
14.0
14.0
14.0
0.00
0.000
1ISMM
14.00 -0.06 -0.35
1—l^lMilgg
14.67 0.17 -0.12
BW
C
14.0
15.0
15.0
0.58
. '• J : ^
0.118
CA
14.0
12.0
12.0
1.15
0.236
12.67
-0.52 -0.81
CE
15.0
15.0
15.0
0.00
0.000
15.00
0.29 0.00
CG
15.0
15.0
12.0
1.73
0.354
14.00
-0.06 -0.35
CJ
14.0
15.0
15.0
0.58
0.118
14.67
0.17 -0.12
CK
22.0
18.0
13.0
4.51
1.120
17.67
1.21 0.92
CO
17.0
17.0
16.0
0.58
0.118
CP
18.0
26.0
25.0
4.36
0.945
CQ
13.0
13.0
13.0
0.00
0.000
CS
16.0
15.0
16.0
0.58
0.118
CX
14.0
15.0
16.0
1.00
0.236
D
Igillgg
liiiilll
DB
:.K;
s VV'1-
¦ilii
DD
14.0
15.0
15.0
0.58
0.118
DE
16.0
16.0
16.0
0.00
0.000
DG
12.0
11.0
10.0
1.00
0.236
DJ
f:?;$£$$$.
DL
BwlllllBII!
''
16.67
23.00
13.00
15.67
15.00
14.67
16.00
11.00
;w*
llllfc
• s No data submitted
0 s Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT 3 Above control limit
II s Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
19/44
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
Strontium-90
Lab Res. 1
Res. 2
Res. 3
0.236
0.354
0.236
0.118
0.354
0.236
EX
0.236
13.00
0.236
19.00
HMMiiHPMiiH
0.000
13.00
0.709
0.118
0.118
14.67
15.00
0.000
0.118
spMa
MSS
P«S
12.00
19.00
12.33
0.000
0.354
0.118
ssssr
0.118
14.33
0.118
IT a Above control limit
JJ. s Below control limit
TAG SYMBOLS
x = Determined to be an outlier
• e No data submitted
0 s Insufficient data
-------
20/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Strontium-90
Lab Res. 1
Res. 2 Res. 3
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
LK
LT
M
MA
MF
MP
MQ
MY
MY
N
NA
NH
NT
NJ
NK.
NO
NT
O <
OF
OS
OX
OY
OZ
p
PA
PB
PG
PI
PM
PQ
PB
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
qx
QY
QZ
RD
9.0
8.0
14.0
14.0
12.0
26.0
15.0
8.0
8.0
;Vy y't. y Ik * xl
9.0 0.58 0.118 8.67 -1.90 -2.19
7.0 0.58 0.118 7.67 -2.25 -2.54
' •'.. ; • V: • " ; \ -' ... '• • • " ' - " ' ' .. ' " - • .
¦ ...... •• . '
• :• ¦- - , •• ? «
? • .. 1 , ¦=- ¦¦V i * ¦ ¦ ¦
/ -r—..- v- * * • v*< • . • • ; • • • • ¦ «
14.0 14.0 0.00 0.000 14.00 -0.06 -0.35
'• t-;' <\ .• ^-V jv \ ¦*£ Vv-
& *
mm
0.58 0.118
26.0
15.0
27.0
16.0
1.00
0.58
W§3
vjS-sv-^r av? ^
12.67 -0.52 -0.81
0.118 15.33 0.40 0.12
=^i
iigpi
15.0
15.0
15.0 0.00 0.000
0mm$$
,S
ii®8
27.0
13.0
12.0
5.0
14.0
14.0
31.0
14.0
13.0
6.0
11.0
- " •• •»
14.0
15.0 1.00
14.0 1.00
1.570 / 32 00 6.18 5.89 x
0.236
: v:;
14.00
SMW
-0.06
0.236 13.00
6.0
13.0
0.58
1.53
0.118
0.354
¦0.35
w -0.40 -0.69
5.67 -2.94 -3.23 U
4 A fn /\ P rt A rt 4
t i ' -V- <•
13.0 0.58 0.118
13.67
¦0.17 -0.46
'¦'¦ '¦¦' >- -~;v " " •' 'V-/:-¦«-'¦ ¦¦¦¦<'
X . - ....
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
tt = Above control limit
U 3 Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
21/44
Strontium-90
Lab Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
RE
KP
RG
RJ
SN
so,
SR
ss
ST
SX
Wifl
RK
110
9.0
10.0
1.00
0.236
BP
. ' X • . * .
RR
14.0
14.0
14.0
0.00
0.000
RV
16.0
16.0
16.0
0.00
0.000
RZ
IJflPggli
1111111
S
15.0
15.0
15.0
0.00
0.000
sc
15.0
16.0
16.0
0.58
0.118
SD
15.0
14.0
16.0
1.00
0.236
SF
14.0
12.0
13.0
1.00
0.236
SI
15.0
15.0
15.0
0.00
0.000
SL
iHI
P
SM
20.0
20.0
24.0
2.31
0.473
-1.44
10.00
14.00 -0.06
16.00 0.64
Slip
1500
15.67 0.52
15.00 0.29
13.00 -0.40
-1.73
S < - « * r **
mmmm
mmmm
21.33
16.0
14.0
15.0
15.0
15.0
13.0
-- ';£< ¦' V1• :;;;x>;;:r: ;h;:y";'
0.58 ' '
1.00
sz
18.0
19.0
20.0
1.00
T
12.0
11.0
13.0
1.00
TD
11.0
12.0
13.0
1.00
TE
18.0
11.0
15.0
3.51
TH
15.0
17.0
16.0
1.00
TI
14.0
16.0
14.0
1.15
TL _
16.0
17.0
18.0
1.00
TN;C :
IMhr
TQ
16.0
15.0
16.0
0.58
TS
8.0
8.0
8.0
0.00
TY
^"x"^ -: ^ ? i S :;S:"f^ ::
i-vy ftgyy-- . '.¦.<". ¦; ;<
U
14.0
16.0
16.0
1.15
0.118
15.33
0.40
0.12
0.236
14.00
-0.06
lp®spi
-0.35
ittiiiits
0.236
1900
1.67
1.39
0.236
12.00
-0.75
-1.04
0.236
12.00
-0.75
-1.04
0.827
14.67
0.17
-0.12
0.236
16.00
0.64
0.35
0.236
14.67
0.17
-0.12
0.236
17.00
0.98
0.69
Mllilliliii^^^*
$ & iw;1£ii«tSfe:
15.0
14.0
16.0
12.0
UA
UE 13.0 13.0
UG
UK
UN
UP
UQ;
uw
UY
VA
W
• s No data submitted
0 = Insufficient data
15.0
14.0
13.0
1.15
1.00
1.00
0.000
0.236
0.236
0.236
8.00 -2.14
15.33 0.40 0.12
Z s- cm
13.67 -0.17 -0.46
>' 1,^ '\W>£ * ,/ iA^j: ,-^v /'
15.00 0.29 0.00
-0.40 -0.69
ISKilt®
13.00
>:/; r-' vy/;4;: . Y'-*
15.0 14.0 14.0 0.58 0.118 14.33
mmF
* 'mi
iiffiiii
TAG SYMBOLS
x 5 Determined to be an outlier
It 3 Above control limit
II s Below control limit
-------
((
— S.
22/44 CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
Strontium-90
Lab Res. 1 Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
VG 10.0 10.0
11.0
0.58
0.118
10.33 -1.33 -1.62
VI 13.0 11.0
12.0
1.00
0.236
12.00 -0.75 -1.04
VJ
iltf
tlBIl
PIPPP«i>?ls^£s
BMKnwIMiiMmMiMbup
VM.
liiii
--2 %>:;
VN„. ,, ,
1SSII'
VO 30.0 v 29.0
27.0
"1.53
0.364
^ 28,67 5.02 4.73 x
YQ
VT
" *
vu
li-'IBfiliBi
iisis
W 13.0 13.0
14.0
_ 0.58
0.118
13.33 -0.29 -0.58
WE •
flllllll
'H-
WF 20.0 21.0
22.0
1.00
0.236
21.00 2.37 2.08
X 12.0 15.0
14.0
1.53
0.354
13.67 -0.17 -0.46
aw
'' Zl, \ v.; :V'-"'4} .-v.'^; '¦ '£<4':'-V v'«^¦
ftllUft!
piivpniii
Data sorted by Laboratory Averaj
:e
Average Tag
Lab
Average
Tag
Lab
Average Tag Lab
5.67 JL
QU
13.33
HP
14.67 C
5.67 U
JE
13.67
X
14.67 BM
7.67
M
13.67
UE
14.67 AZ
8.00
TS
13.67
QZ
15.00 UN
8.67
LT
13.67
KX
15.00 SI
10.00
RK
13.67
BC
15.00 SD
10.33
VG
13.67
BA
15.00 S
11.00
DG
13.67
AU
15.00 PB
12.00
VI
13.67
AE
15.00 J
12.00
TD
13.67
A
15.00 CX
12.00
T
14.00
ST
15.00 CE
12.00
JS
14.00
RR
15.33 U
12.33
K
14.00
Q
15.33 SS
12.33
EB
14.00
MQ
15.33 NT
12.33
BB
14.00
DT
15.33 BL
12.67
QW
14.00
CG
15.33 AK
12.67
NJ
14.00
BO
15.67 TQ
12.67
CA
14.00
AF
15.67 SC
13.00
UP
14.33
UW
15.67 CS
13.00
SF
.
14.33
N
16.00 TH
13.00
QJ
14.33
L
16.00 RV
13.00
HK
14.33
BH
16.00 EL
13.00
FU
14.33
AJ
16.00 DZ
13.00
DO
14.67
TT
16.00 DE
13.00
CQ
14.67
TE
16.33 E
13.00
AL
14.67
IC
16.67 CO
13.33
W
14.67
DD
17.00 TL
13.33
I
14.67
CJ
17.33 AW
• = No data submitted
TAG SYMBOLS
ft s Above control limit
0 = Insufficient data
x s Determined to be an outlier
s Below control limit J
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
23/44
Strontium-90
Data sorted by Laboratory Average
Average
Ta«
Lab
Average
Tag
Lab
Average
Tag
Lab
17.67
CK
19.00
GQ
23.00
CP
19.00
SZ
21.00
WF
26.00
X
NO
19.00
JY
21.33
SM
28.67
32.00
X
X
VO
PV
% responding labs
20-f
Frequency distribution
i responding labs
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
10-
0—r
-6
Mv ¦ jllljliU
-4 -2 ' 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft = Above control limit
= Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
24/44
Cobalt-60 Statistical Summary 194 Participants
The known value of this nuclide is 29.0 pCi/1 with an expected precision of 5.0; the control limits
are 20.3 to 37.7; the warning regions sue 20.3 to 23.2 and 34.8 to 37.7
59(30.4 %) Failed to respond
26(64.9 %) Within all limits
* w.
* \l V
* \ X.
• ^4 rs^
*"*- 4(2.1 %) In warning zone
5(2.6 %) Outliers •'
|-
i i
but within control
Statistic
Respondents
Non-outliers
Mean
30.34
Grand Avg 29.39
Std. Dev.
8.73
2.24
Variance
76.17
5.00
% Coef. of Var.
28.77
7.61
% deviation of mean from known value
4.61
1.36
Norm. dev. of mean from known value
0.15
0.18
Median
29.33
29.33
% deviation of median from known value
1.15
1.15
Norm. dev. of median from known value
0.04
0.15
5(3.7 %) More than 3 norm. S.D. •
4(3.0 %) Between 2 and 3 norm. S.D. •
, 105(77.8 %) Within 1 norm. S.D.
of known value
21(15.6 %) Between 1 and 2 norm. S.D.
-------
({
25/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
a.
Cobalt-60
'
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
27.0
25.0
27.0
1.15
0.236
26.33
-1.06
-0.92
AE
31.0
32.0
31.0
0.58
0.118
31.33
0.67
0.81
AF
29.0
29.0
31.0
1.15
0.236
29.67
0.09
0.23
AH
27.0
26.0
27.0
0.58
0.118
26.67
-0.95
-0.81
AI
25.0
25.0
24.0
0.58
0.118
24.67
-1.64
-1.50
AJ
30.0
28.0
26.0
2.00
0.473
28.00
-0.48
-0.35
AK
30.0
29.0
30.0
0.58
0.118
29.67
0.09
0.23
AL
29.0
21.0
30.0
4.93
1.120
26.67
-0.95
-0.81
AO
V * ' v '
-- „
? % C ,• t *
V- ¦*£&
AP
310
300
30.0
0.58
0.118
30.33
0.33
0.46
AH
-- ¦' "
§SI«ISS
ISliS^ll
•
AU
30.0
28.0
28.0
1.15
0.236
28.67
-0.25
-0.12
AW
29.0
29.0
28.0
0.58
0.118
28.67
-0.25
-0.12
AZ
26.0
20.0
26.0
3.46
0.709
24.00
-1.87
•1.73
BA
36.0
32.0
34.0
2.00
0.473
34.00
1.60
1.73
BB
31.0
33.0
32.0
1.00
0.236
32.00
0.90
1.04
BC
29.0
28.0
28.0
0.58
0.118
28.33
-0.37
-0.23 ,
BO
illMis
~ ¦
BH
31.0
30.0
27.0
2.08
0.473
29.33
-0.02
0.12
BK
32.0
32.0
32.0
0.00
0.000
32.00
0.90
1.04
BL
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
BM
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
BN
29.0
28.0
27.0
1.00
0.236
28.00
-0.48
-0.35
BO
31.0
310
27.0
2.31
0.473
29.67
0.09
0.23
BS
iiPlii!®
memm
.
• s
BW
25.0
42.0
20.0
11.53
4.046
29.00
-0.14
0.00
C
27.0
26.0
26.0
0.58
0.118
26.33
-1.06
-0.92
CA
30.0
27.0
30.0
¦ 1.73
0.354
29.00
-0.14
0.00
CE
32.0
32.0
34.0
1.15
0.236
32.67
1.13
1.27
CG
llBijllS
."¦•v." ^ ^
•
CJ
34.0
31.0
30.0
2.08
0.473
31.67
0.79
0.92
CK
32.0
28.0
28.0
2.31
0.473
29.33
-0.02
0.12
CM
27.0
28.0
29.0
1.00
0.236
28.00
-0.48
-0.35
CO
27.0
30.0
29.0
1.53
0.354
28.67
-0.25
-0.12
CP
32.0
30.0
30.0
1.15
0.236
30.67
0.44
0.58
CQ
31.0
32.0
33.0
1.00
0.236
32.00
0.90
1.04
CS
29.0
30.0
27.0
1.53
0.354
28.67
-0.25
-0.12
CX
31.0
30.0
31.0
0.58
0.118
30.67
0.44
0.58
D
" 'v %
SIIIIBSIgt
jl
ill
t
DB
: ¦
' J, &
ggJKHI
¦ '
*• "
DD
32.0
30.0
29.0
1.53
0.354
30.33
0.33
0.46
DE
30.0
30.0
30.0
0.00
0.000
30.00
0.21
0.35
DG
31.0
28.0
31.0
1.73
0.354
30^9
0.21
0.35
DJ
iSliwISil
v':'iw
•
DL
31.0
31.0
30.0
0.58
0.118
30.67
0.44
0.58
• =
No data submitted
TAG SYMBOLS
It = Above control limit
[0.
Insufficient data
X 2
Determined to be an outlier
J] 3 Below control limit
•V
-------
If
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
^
26/44
Cobalt-60
Lab
Res. 1
Exper.
Rnganal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
30.0
30.0
28.0
1.15
0.236
29.33
-0.02
0.12
DO
37.0
32.0
33.0
2.65
0.591
34.00
1.60
1.73
DS
Sffliaiiil
< «¦ j} •v<.y<
DT
28.0
31.0
28.0
1.73
0.354
29.00
-0.14
0.00
DZ
25.0
24.0
26.0
1.00
0.236
25.00
-1.52
-1.39
E
30.0
30.0
30.0
0.00
0.000
30.00
0.21
0.35
EB
28.0
28.0
28.0
0.00
0.000
28.00
-0.48
-0.35
EL
28.0
29.0
28.0
0.58
0.118
28.33
-0.37
-0.23
EO
•. v V - ^ v-
:V. X',
sr s
' % ^
,'v ' ' ' "•*£?*
yVV A«. A ^ ^
i-< - /> *4 s
EB
' ' (>* •. s
a' ' s ?'•>'* <
< ^ AV
¦¦¦. ¦
V
xk'%^: * ^
EV
-" ' ' -
> ' *
s<" "...< r * ^ -
J
29.0
30.0
29.0
0.58
0.118
29.33
-0.02
0.12
JE
29.0
30.0
29.0
0.58
0.118
29.33
-0.02
0.12
JG
27.0
29.0
25.0
2.00
0.473
27.00
-0.83
^-0.69^^^
JN
- 7°'
¦* = --
.V' i :i:£
" X. '-V ,
JQ
-
'it V < - ^ s» ' iA ,'i
JS
30.0
30.0
31.0
0.58
0.118
30.33
0.33
0.46
JY
32.0
41.0
37.0
4.51
1.120
36.67
2.52
2.66
K
26.0
25.0
28.0
1.53
0.354
26.33
-1.06
-0.92
KE
/ ^ \ ^
f ' v ^r,A/'/
... ...
KT
'si a,
v - V\> ^ "C ^ r '
v- iZ-frSVHis-tli&r *>¦-.
KX
30.0
30.0
29.0
0.58
0.118
29.67
0.09
0.23
L
30.0
28.0
30.0
1.15
0.236
29.33
-0.02
0.12
LF
29.0
30.0
30.0
0.58
0.118
29.67
0.09
0.23
LG
•::'i
- *i.
¦
LL
¦ " 5 ^
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 S
^
Insufficient data
X s
Determined to be an outlier
JJ = Below control limit
41
-------
27/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Cobalt-60
Lab
MF
MP
MQ
MV
MY
N
NA
NH
NT
OF
OS
OX
OY
OZ
P
PA
Res. 1
1250
25.0
18.0
31.0
28.0
64.0
42.0
Res. 2
Res. 3
. Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
LR
32.0
30.0
29.0
1.53
0.354
30.33
0.33
0.46
LT
29.0
29.0
30.0
0.58
0.118
29.33
-0.02
0.12
M
30.0
29.0
30.0
0.58
0.118
29.67
0.09
0.23
MA
29.0
29.0
28.0
0.58
0.118
28.67
-0.25
-0.12
121.0
27.0
,17.0
29.0
28.0
122:0
26.0
17.0
32.0
27.0
2.08
1.00
0.58
1.53
0.58
01473
0.236
0.118
0.354
0.118
122.67-
26.00
17.33
30.67
27.67
-- > i
32il :S245 x
-1.18 -1.04
•4.18 -404 x
0.44 0.58
-0.60
NJ
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
NK
28.0
32.0
31.0
2.08
0.473
30.33
0.33
0.46
NO
320
33.0
33.0
0.58
0.118
32.67
1.13
1.27
NT :
•vo >". *-
4 'i- -
fVi
wmm
O
33.0
32.0
33.0
0.58
0.118
32.67
1.13
1.27
-0.46
• *
,V
54.0
41.0
54.0
42.0
0.00
0.58
' V, v ' > S
-J ^ ^ v Wr ' '¦ : v**\
8.52 8.66 x
0.000
0.118
54.00
41.67
4J26
PB
30.0
30.0
30.0
0.00
0.000
30.00
0.21
0.35
PG
"m • - • ' ¦'
*. tr? w :f • >¦.>"¦ \.v :
PI
29.0
29.0
28.0
0.58
0.118
28.67
-0.25
-0.12
PM
31.0
33.0
33.0
1.15
0.236
32.33
1.02
1.15
PQ
30.0
31.0
30.0
0.58
0.118
30.33
0.33
0.46
PR
. ' <>, < • ^
h: III
PV
32.0
35.0
31.0
2.08
0.473
32.67
1.13
1.27
PW
28.0
27.0
28.0
0.58
0.118
27.67
-0.60
-0.46
Q
280
29.0
28.0
0.58
o.iis
28.33
-0.37
-0.23
QC
w«iiPPIi*S
QJ
31.0
29.0
30.0
1.00
0.236
30.00
0.21
0.35
QP
29.0
28.0
31.0
1.53
0.354
29.33
-0.02
0.12
QQ
, ' " ! '
SllliSilli
QT
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
QU
28.0
29.0
30.0
1.00
0.236
29.00
-0.14
0.00
QW
27.0
29.0
30.0
1.53
0.354
28.67
-0.25
-0.12
QX
35.0
37.0
35.0
1.15
0.236
35.67
2.17
2.31
QY
iiJISIlff
QZ
28.0
28.0
28.0
0.00
0.000
28.00
-0.48
-0.35
RD
:4
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
U = Below control limit
-------
— —^— X
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995 28 / 44
Cobalt-60
-v
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
RE
' ' V -
*yr "t /> ^ V'
RF
26.0
26.0
25.0
0.58
0.118
25.67
-1.29
-1.15
RO
•••>
^BSU
' ^ ^ (V -s! s.
Rv
4
*
RJ
--
•
RK
26.0
26.0
26.0
0.00
0.000
26.00
-1.18
-l!o4
RP
°\ v---
mmm
m' '¦-¦ 'J'C''
RR
30.0
31.0
31.0
0.58
0^118
30.67
0.44
0.58
RV
23.0
28.0
30.0
3.61
0.827
27.00
-0.83
-0.69
RZ
31.0
31.0
31.0
0.00
0.000
31.00
0.56
0.69
S
29.0
29.0
29.0
o.oo
0.000
29.00
-0.14
0.00
sc
27.0
30.0
27.0
1.73
0.354
28.00
-0.48
-0.35
SD
32.0
29.0
30.0
1.53
0.354
30.33
0.33
0.46
SF
31.0
30.0
34.0
2.08
0.473
31.67
0.79
0.92
SI
31.0
34.0
31.0
_1.73 ^
0.354
32.00
0.90
1.04
SL
llllfilll®
WrnsSmM
HIBM1
"¦?:& T-Sf f^..; ^.v
SM
27.0
32.0
29.0
2.52
0.591
29.33
-0lb2
0.12
SN
25.0
28.0
25.0
1.73
0.354
26.00
-1.18
-L04
lifipp
¦ .v.:..:.": '.-:^iL.. ;.?:>¦
.¦•:.-;•.¦¦?¦/Tr.; ¦:•
SR
24.0
27.0
29.0
2.52
0.591
26.67
-0.95
-0.81
ss
30.0
28.0
30.0
1.15
0.236
29.33
-0.02
0.12
ST
27.0
28.0
27.0
0.58
0.118
27.33
-0.71
-0.58
sx
31.0
29.0
31.0
1.15
0.236
30.33
0.33
0.46
sz
28.0
28.0
28.0
0.00
0.000
28.00
-0.48
-0.35
T
28.0
26.0
29.0
1.53
0.354
27.67
-0.60
-0.46
TD
29.0
31.0
36.0
3.61
0.827
32.00
0.90
1.04
TE
28.0
29.0
27.0
1.00
0.236
28.00
-0.48
-0.35
TH
34.0
32.0
29.0
2.52
0.591
31.67
0.79
0.92
TI
29.0
30.0
29.0
0.58
0.118
29.33
-0.02
0.12
TL
25.0
26.0
28.0
1.53
0.354
26.33
-1.06
-0.92
IN
rr.r.v"^/. •vi'-rr*: •;•
IlllliillllfIS
TQ
27 0
27.0
28.0
0.58
0.118
27.33
-0.71
^ -0 58 ' '
TS
33.0
30.0
31.0
1.53
0.354
31.33
0.67 ^
0.81
TY
U
30.0
30.0
28.0
1.15
0.236
29.33
-0.02 ^
0.12
UA
y'/• r" r;
v. V v
^ s > •/'-
^Sx > •
• '
UE
29.°
29.0
29.0
0.00
0.000
29.00_
0.00
UG
Mi 1
UK
:^;"i iii ¦ ? 1-
SfC^'
J1i:?<£> :^5< >
nMMM
¦ *.
-*¦ : *
UN
32.0
25.0
24.0
4.36
0.945
27.00
-0.83
-0.69
UP
28.0
32.0
29.0 _
2.08
0.473
29.67
0.09
0.23
UQ
jlBf
1
uw
29.0
27.0
30.0
1.53
0.354
28.67
-0.25
-0.12
UY
34.0
30.0
30.0
2.31
0.473
31.33
0.67
0.81
VA
32.0
30.0
29.0
i.53
0.354
30.33
0.33
0.46
vcf'' ¦
¦
MtpwstmmoiMraP^
• s No data submitted TAG SYMBOLS It s Above control limit
0 = Insufficient data x s Determined to be an outlier 11 s Below control limit i
^ —-
-------
(( 1—
29/44
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
Cobalt-60
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VG
30.0
29.0
30.0 0.58
0.118
29.67
0.09
0.23
VI
29.0
29.0
29.0 0.00
0.000
29.00
-0.14
0.00
VJ
''--V /
llllllll
•
VM
42.0
33.0
31.0 5.86
1.570
35.33
2.06
2.19
VN -
lEffpl
iliillis
•
vo
25.0
27.0
25.0 1.15
0.236
25.67
-1.29
-1.15
VQ
S®Pi!
may
#• ' < J ?" ?. v^4-.
fc'
VT
S v " *¦'* <
_
vu
< ^ s.
•. „ <=v * J
itftlfl
w
31.0
28.0
27.0 2.08
0.473
28.67
-0.25
-0.12
WE
v s '' f "¦ s ' v
fHII!
•
WF
38.0
40.0
- 37.0 >>. 1.53
0.364
38.33 .
3.10
X
30.0
31.0
30.0 0.58
0.118
30.33
0.33
0.46
¦z
Data sorted by Laboratory Averaj
;o
Average
Tag
Lab
Average
Tag
Lab
Average
Tag Lab
17.33
X
MV
28.00
QZ
29.00
BW
22.00
HI
28.00
EB
29.00
BM
24.00
AZ
28.00
CM
29.00
BL
24.67
AI
28.00
BN
29.33
U
25.00
DZ
28.00
AJ
29.33
TI
25.67
VO
28.33
Q
29.33
SS
25.67
RF
28.33
HL
29.33
SM
26.00
SN
28.33
EL
29.33
QP
26.00
RK
28.33
BC
29.33
LT
26.00
MQ
28.67
W
29.33
L
26.33
TL
28.67
UW
29.33
JE
26.33
K
28.67
QW
29.33
J
26.33
C
28.67
PI
29.33
GI
26.33
A
28.67
MA
29.33
DM
26.67
SR
28.67
CS
29.33
CK
26.67
AL
28.67
CO
29.33
BH
26.67
AH
28.67
AW
29.67
VG
27.00
UN
28.67
AU
29.67
UP
27.00
RV
29.00
VI
29.67
M
27.00
JG
29.00
UE
29.67
LF
27.33
TQ
29.00
S
29.67
KX
27.33
ST
29.00
QU
29.67
HK
27.67
T
29.00
QT
29.67
FL
27.67
PW
29.00
NJ
29.67
BO
27.67
NH
29.00
I
29.67
AK
28.00
TE
29.00
FU
29.67
AF
28.00
SZ
29.00
DT
30.00
QJ
28.00
sc
29.00
CA
30.00
PS
• = No data submitted
TAG SYMBOLS
1T = Above control limit
0 = Insufficient data
^
x s Determined to be an outlier
-------
((
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
30/44
Cobalt-60
Data sorted by Laboratory Aver&g
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
30.00
HP
30.67
RR
32.00
BK
30.00
GQ
30.67
N
32.00
BB
30.00
FJ
30.67
DL
32.33
PM
30.00
EX
30.67
CX
32.67
PV
30.00
E
30.67
CP
32.67
O
30.00
DG
31.00
RZ
32.67
NO
30.00
DE
31.00
GE
32.67
CE
30.33
X
31.33
UY
34.00
DO
30.33
VA
31.33
TS
34.00
BA
30.33
sx
31.33
IC
34.33
FZ
30.33
SD
31.33
AE
35.33
VM
30.33
PQ
31.67
TH
35.67
QX
30.33
NK
31.67
SF
36.67
JY
30.33
LR
31.67
CJ
38.33
X
WF
30.33
JS
32.00
TD
41.67
X
P
30.33
DD
32.00
SI
54.00
X
OZ
30.33
AP
32.00
CQ
122.67
X
MP
% responding labs
Frequency distribution
% responding labs
-2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
-4 -"2 0 +2 +4
Normalized deviation of the mean from the grand average
• 3 No data submitted TAG SYMBOLS • It a Above control limit
0 = Insufficient data x = Determined to be an outlier U a Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18*Apr* 1995
31/44
Cesium-134 Statistical Summary 194 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 5.0; the control limits
are 11.3 to 28.7; the warning regions are 11.3 to 14.2 and 25.8 to 28.7
59(30.4 %) Failed to respond ,
3(1.5%) Outliers *
2(1.0 %) Out of control
but not an outlier
Statistic
126(64.9 %) Within all limits
Respondents
*- 4(2.1 %) In warning zone
but withtfi control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
20.26
17.58
309.06
86.76
1.31
0.01
18.33
-8.33
-0.09
Grand Avg 18.33
2.38
5.68
13.00
-8.35
-0.70
18.17
-9.17
-0.77
6(4.4 %) More than 3 norm. S.D
3(2.2 %) Between 2 and 3
97(71.9 %) Within 1 norm. S.D.
of known value
29(21.5 %) Between 1 and 2 norm. S.D.
-------
(t ===
32/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
^
Cesrium-134
'
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average '
(grand-avg) (known) Tag
A
16.0
16.0
16.0
0.00
0.000
16.00
-0.81
-1.39
AE
16.0
18.0
17.0
1.00
0.236
17.00
-0.46
-1.04
AF
18.0
18.0
18.0
0.00
0.000
18.00
-0.11
-0.69
AH
17.0
17.0
17.0
0.00
0.000
17.00
-0.46
-1.04
AI
16.0
17.0
16.0
0.58
0.118
16.33
-0.69
-1.27
AJ
14.0
17.0
20.0
3.00
0.709
17.00
-0.46
-1.04
AK
19.0
18.0
20.0
1.00
0.236
19.00
0.23
-0.35
AL
13.0
20.0
21.0
4.36
0.945
18.00
-0.11
-0.69
AO
• • sSl ' s- A
_
?< '--"'*0
CJ
18.0
22.0
19.0
2.08
0.473
19.67
0.46
-0.12
CK
20.0
18.0
18.0
1.15
0.236
18.67
0.12
-0.46
CM
14.0
13.0
12.0
1.00
0.236
13.00
-1.85
-2.42
CO
20.0
21.0
17.0
2.08
0.473
19.33
0.35
-0.23
CP
211.0
216.0
214.0
2.52
0.591
213.67
67.67
67.09 x
CQ
17.0
17.0
18.0
0.58
0.118
17.33
-0.35
-0.92
cs
17.0
20.0
19.0
1.53
0.354
18.67
0.12
-0.46
cx
24.0
24.0
19.0
2.89
0.591
22.33
1.39
0.81
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
33/44
Cesium-134
Lab Res. 1
Exper. Rng anal
Res. 2 Res. 3 Sigma (R + SR) Average
Normalized deviation
(grand-avg) (known) Tag
DM
18.0
20.0
18.0
1.15
0.236
DO
17.0
20.0
160
2.08
0.473
DS
DT
17.0
20.0
16.0
2.08
0.473
DZ
15.0
14.0
16.0
1.00
0.236
E
19.0
19.0
19.0
0.00
0.000
EB
16.0
17.0
16.0
0.58
0.118
EL
18.0
18.0
18.0
0.00
0.000
EO
IBII
liifciMiii
llllj^p
ER
EV
spiOi'lllill
smw
EX
22.0
21.0
22.0
0.58
0.118
FP
IllittSIf*
FJ
19.0
19.0
19.0
0.00
0.000
FL
19.0
18.0
19.0
0.58
0.118
;FN
!¦¦¦¦
FU
19.0
18.0
18.0
0.58
0.118
FZ
21.0
20.0
17.0
2.08
0.473
GE
17.0
20.0
17.0
1.73
0.354
GI
17.0
17.0
17.0
0.00
0.000
GQ
20.0
20.0
20.0
0.00
0.000
:GT,:7
GZ
'.V f
llpjlif
m
10.0
13.0
10.0
1.73
0.354
HK
18.0
18.0
18.0
0.00
0.000
HL
19.0
18.0
18.0
0.58
0.118
HP
19.0
19.0
18.0
0.58
0.118
I
18.0
19.0
17.0
1.00
0.236
IC
19.0
21.0
19.0
1.15
0.236
ID
J
17.0
17.0
17.0
0.00
0.000
JE
17.0
18.0
17.0
0.58
0.118
JG
14.0
15.0
16.0
1.00
0.236
JN
JQ
JS
19.0
19.0
19.0
0.00
0.000
JY
31.0
25.0
21.0
5.03
1.345
K
18.0
17.0
18.0
0.58
0.118
KE
!li!|«|!
KT
KX
18.0
20.0
21.0
1.53
0.354
L
19.0
17.0
20.0
1.53
0.354
LF
18.0
19.0
0.58
0.118
LG
IIS
lililllSfciiil
llWsliililil
*LL?r-;-
-
18.67
0.12
-0.46
17.67 -0.23 -0.81
17.67 -0.23 -0.81
21.67
si®
18.00
20,00
fcaSKfj:
X.WSW3*
sii&nn
11.00
18.00
18.33
18.67
18.00
19.67
jglii
17.00
17.33
15.00
-0.46
-0.35
-1.15
19.00
25.67
17.67
liplflisil
19.67
18.67
18.67
®iIPS
0.23 -0.35
2.54 1.96
-0.23 -0.81
""•Mr
0.46 -0.12
0.12 -0.46
0.12 -0.46
HI
£
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
U a Below control limit
-------
34/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Cesium-134
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
32.0
28.0
20.0
6.11
1.795
26.67
20.0
20.0
18.0
1.15
0.236
19.33
17.0
17.0
16.0
0.58
0.118
16.67
17.0
16.0
19.0
1.53
0.354
17.33
Normalized deviation
LR
LT
M
MA
MF
NA
NH
NI
NJ
NK
NO
NT
O
OF
OS
OX
OY
2.89
0.35
-0.58
-0.35
2.31
-0.23
-1.15
-0.92
MP
74.0
72.0
70.0
2.00
0.473
MQ
18.0
19.0
19.0
0.58
0.118
MV
9.0
10.0
_8.0
1.00
0.236
MY
;'V/- ^
lilBIiil
N
20.0
18.0
19.0
1.00
0.236
¦* ,s U ¦ ~ > - » -
72.00 18.59 18.01 x
18.67 0.12 -0.46
9.00 -3.23 -3.81 li
19.00 0.23 -0 35
- >.;-''':-'It/,"' jtj
170
16.0
18.0
1.00
0.236
17.00
-0.46
_ ^-04
maii
iiiptpiim
vjb •.$?. p y-s.
16.0
20.0
18.0
2.00
0.473
18.00
-oln
-0.69
16.0
15.0
13.0
1.53
0.354
14.67
-1.27
-1.85
21.0
22.0
22.0
0.58
0.118
21.67
1.16
0.58
21.0
21.0
21.0
0.00
0.000 21.00
0.92
0.35
OZ
32.0
28.0
30.0
2.00
0.473
30.00
P
23.0
21.0
21.0
1.15
0.236
21.67
PA
PB
20.0
20.0
20.0
0.00
0.000
20.00
PG
llll^Slll^Bi
Bl
PI
17.0
17.0
18.0
0.58
0.118
17.33
PM
18.0
14.0
23.0
4.51
1.120
18.33
PQ
18.0
17.0
17.0
0.58
0.118
17.33
PR
; • i
WV'„. ^ v
mmmssmmmmm
siiiiifi
PV
18.0
18.0
25.0
4.04
0.827
20.33
PW
17.0
18.0
18.0
0.58
0.118
17.67
Q
17.0
18.0
19-9
1.00
0.236
18.00
QC
QJ
15.0
17.0
18.0
1.53
0.354
16.67
QP
27.0
31.0
28.0
2.08
0.473
28.67
QQ
^:|I||||l|p||l
lIBIIiiiii
QT
18.0
18.0
18.0
0.00
0.000
18.00
QU
13.0
14.0
15.0
1.00
0.236
14.00
QW
16.0
13.0
15.0
1.53
0.354
14.67
ox
190
20.0
190
0.58
0.118
19.33
QY
QZ
18.0
160
17.0
100
0.236
17.00
RD
§»lpiP
nMMii
4.04
1-1®
0.58
-0.35
0.00
-0.35
-0.23
-0.11
||§|
-0.58
3.58
- VW&.
-0.11
-1.50
-1.27
0.35
3.46 x
0.58
0.00
-0.92
-0.58
-0.92
¦Pli
0.12
-0.81
-0.69
.
-1.15
3.00
-0.69
-2.08
-1.85
-0.23
• 3 No data submitted
0 s Insufficient data
TAGSYMBOLS
x = Determined to be an outlier
ft s Above control limit
li = Below control limit
-------
r,
v
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
36/44
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
RE
RF
19.0
19.0
19.0
0.00
0.000
1.9.00
023
-0.35
RG
f-'*" ".J"-""'
wrM.c>wvv v.w
RJ
v ¦? * -V;- x>
^ fx,
" v. .
RK
150
15.0
15.0
0.00
0.000
15.00
-1.73
RP
- t:
RR
19.0
17.0
18.0
1.00
0.236
18.00
-0.11
-0.69
RV
21.0
21.0
22.0
0.58
0.118
21.33
1.04
0.46
RZ
19.0
19.0
20.0
0.58
0.118
19.33
0.35
-0.23
S
18.0
18.0
18.0
0.00
0.000
18.00
-0.11
-0.69
sc
15.0
20.0
20.0
2.89
0.591
18.33
0.00
-0.58
SD
21.0
22.0
18.0
2.08
0.473
20.33
0.69
0.12
SF
20.0
17.0
19.0
1.53
0.354
18.67
0.12
-0.46
SI
200
210
24.0
2.08
0.473
21.67
1.16
0.58
SL
: -
>. ;X'.: .V ^
Vtvvj-w-fr-v >~w. »> VJV'fS- ?>
•
nV
|:||x
SM
18.0
19.0
18.0
0.58
0.118
18.33
0.00
-0.58
SN
16.0
17.0
180
1.00
0.236
17.00
-0.46
-1.04
SO
Y~"-' ,
SR
17.0
16.0
18.0
1.00
0.236
17.00
-0.46
-1.04
ss
18.0
19.0
21.0
1.53
0.354
19.33
0.35
-0.23
ST
17.0
17.0
17.0
0.00
0.000
17.00
-0.46
-1.04
sx
16.0
19.0
18.0
1.53
0.354
17.67
-0.23
-0.81
sz
17.0
17.0
17.0
0.00
0.000
17.00
-0.46
-1.04
T
17.0
19.0
18.0
1.00
0.236
18.00
-0.11
-0.69
TD
20.0
19.0
19.0
0.58
0.118
19.33
0.35
-0.23
TE
16.0
19.0
18.0
1.53
0.354
17.67
-0.23
-0.81
TH
18.0
18.0
19.0
0.58
0.118
18.33
0.00
-0.58
TI
18.0
19.0
19.0
0.58
0.118
18.67
0.12
-0.46
TL
170
18.0
20.0
1.53
0.354
1®-33„
0.00
-0.58
TN
, « -
iMillili
< - n
TQ
16.0
18.0
17.0
1.00
0.236
17.00
-0.46
-1.04
TS
17.0
18.0
17.0
0.58
0.H8
17.33
-0.35
-0.92 _
TY
¦v.- ¦'
: ' i'
"¦ ' ¦¦
* T- w,' >"•>• "•< ^ s
U
190
18.0
19,0
0.58
0.118
18.67
0 12
-0.46
UA
/ " - r.:~
>ww ^ V<
"\r° I ' - ' ' * * ^
UE
200
1.8.0
19.0
1.00
0.236
19.00
0.23
-0.35
UG
: ¦ ¦ ¦¦«
^ -
"¦f "v<. -Sv V
UK
r <. -s'v. ,
>v <¦'
' '' ,
.
UN
18.0
18.0
19.0
0.58
0.118
18.33
0.00
-0.58
UP
18.0
15.0
16.0
1.53
0.354
16.33
-0.69
-1.27
UQ
, W '/¦»« ¥<£**S¦<£. J 'V""" ''-V
V" Y,
uw
21.0
20.0
20.0
0.58
0.118
20.33
0.69
0.12
UY
18.0
18.0
17.0
0.58
0.118
17.67
-0.23
-0.81
VA
18.0
19.0
19.0
0.58
0.118
18.67
0.12
-0.46
VC
,-v-.
v
* '» ,, ^ '
'
• 5
No data submitted
TAG SYMBOLS
IT s Above control limit
0 =
Insufficient data
X =
Determined to be an outlier
<11 = Below control limit
/J
-------
(f
36/44
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average
(grand-avg) (known) Tag
VG
18.0
18.0
19.0 0.58
0.118
18.33
0.00
-0.58
VI
17.0
16.0
17.0 0.58
0.118
16.67
-0.58
-1.15
VJ
nm
•
VM
24.0
22.0
24.0 1.15
0.236
23.33
1.73
1.15
VN
illl
illlll!
__ >*WH>V _
%
w
vo
19.0
1®°
17.0 1.53
0.354
17.33
-0.35
-0.92
VQ
/ 1/" ' *
\v * s-yS.". '
fill®
VT
VU
llllitigl
rnmmmm
111
w
16.0
17.0
16.0 0.58
0.118
16.33
-0.69
-1.27
WE
Mil
•
WF
21.0
21.0
22.0 0.58
0.118
21.33
1.04
0.46
X
170
17.0
18.0 0.58
0.118
17.33
-0.35
-0.92
:'z;^
p'fllplilPI
JilMlll
•
Data sorted by Laboratory Averag
t®
Average
Ta*
Lab
Average
Tag
Lab
Average
Tag
Lpb
9.00
U
MV
17.00
AJ
18.00
RR
11.00
U
m
17.00
AH
18.00
QT
13.00
CM
17.00
AE
18.00
Q
14.00
QU
17.33
X
18.00
NJ
14.67
QW
17.33
VO
18.00
I
14.67
NK
17.33
TS
18.00
HK
15.00
RK
17.33
PQ
18.00
GE
15.00
JG
17.33
PI
18.00
EL
15.00
DZ
17.33
MA
18.00
AL
15.00
C
17.33
JE
18.00
AF
16.00
A
17.33
DL
18.33
VG
16.33
W
17.33
CQ
18.33
UN
16.33
UP
17.33
CA
1
18.33
TL
16.33
EB
17.33
BW
18.33
TH
16.33
BH
17.67
UY
18.33
SM
16.33
AI
17.67
TE
18.33
SC
16.67
VI
17.67
SX
18.33
PM
16.67
QJ
17.67
PW
18.33
HL
16.67
M
17.67
K
18.33
FU
17.00
TQ
17.67
DT
18.33
BM
17.00
SZ
17.67
DO
18.67
VA
17.00
ST
17.67
DG
18.67
U
17.00
SR
17.67
CE
18.67
TI
17.00
SN
17.67
BN
18.67
SF
17.00
QZ
17.67
BC
18.67
MQ
17.00
NH
17.67
AW
18.67
LF
17.00
J
18.00
T
18.67
L
17.00
GI
18.00
S
18.67
HP
• = No data submitted
TAG SYMBOLS
IT 3 Above control limit
0 = Insufficient data
^
x = Determined to be an outlier
<11 s Below control limit
'J
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
37/44
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
18.67
FL
19.33
QX
21.00
DD
18.67
DM
19.33
LT
21.00
BK
18.67
CS
19.33
FZ
21.00
AP
18.67
CK
19.33
CO
21.33
WF
18.67
BO
19.67
KX
21.33
RV
18.67
AU
19.67
IC
21.67
SI
19.00
UE
19.67
CJ
21.67
P
19.00
RF
20.00
PB
21.67
NO
19.00
N
20.00
GQ
21.67
EX
19.00
JS
20.00
DE
22.33
CX
19.00
FJ
20.00
BB
23.33
VM
19.00
E
20.33
UW
25.67
JY
19.00
BL
20.33
SD
26.67
LR
19.00
AK
20.33
PV
28.67
QP
19.33
TD
20.33
BA
30.00
X
OZ
19.33
SS
20.67
AZ
72.00
x •;
MP
19.33
RZ
21.00
O
213.67
X
CP
% responding labs
Frequency distribution
10-
—r"
+6
% responding labs
20-
-2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
104
o
illljllf.
H-——T --T-
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
-A
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
JJ = Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
38/44
Cesium-137
Statistical Summary
194 Participants
The known value of this nuclide is 11.0 pCi/1 with an expected precision of 5.0; the control limits
are 2.3 to 19.7; the warning regions are 2.3 to 5.2 and 16.8 to 19.7
60(30.9 %) Failed to respond •
• 129(66.5 %) Within all limits
* NX
* \r\
* X Tv
* \J
* a. rs.
* >1 Pv
# \J >v
3( 1.5 %) Outliers •'
Statistic
l I
Respondents
2(1.0 %) In warning zone
but within control
Non-outliers
Mean
14.07
Grand Avg 11.78
Std. Dev.
23.08
1.68
Variance
532.72
2.84
% Coef. of Var.
164.02
14.29
% deviation of mean from known value
27.93
7.12
Norm. dev. of mean from known value
0.13
0.47
Median
11.67
11.67
% deviation of median from known value
6.06
6.06
Norm. dev. of median from known value
0.03
0.40
4(3.0 %) More than 3 norm. S.D.
1(0.7 %) Between 2 and 3 norm
. 116(86.6 %) Within 1 norm. S.O.
of Known value
13(9.7 %) Between 1 and 2 norm. S.D.
-------
a
39/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1905
—
Cesium«137
"
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.35
AE
12.0
13.0
10.0
1.53
0.354
11.67
-0.04
0.23
AF
13.0
11.0
10.0
1.53
0.354
11.33
-0.16
0.12
AH
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
AI
10.0
11.0
11.0
0.58
0.118
10.67
-0.39
-0.12
AJ
12.0
12.0
12.0
0.00
0.000
12.00
0.07
0.35
AK
12.0
11.0
13.0
1.00
0.236
12.00
0.07
0.35
AL
17.0
17.0
11.0
3.46
0.709
15.00
1.11
1.39
AO
§fi
AP
15.0
120
9.0
3.00
0.709
12.00
0.07
0.35
AR
#
AU
11.0
13.0
13.0
1.15
0.236
12.33
0.19
0.46
AW
12.0
13.0
13.0
0.58
0.118
12.67
0.31
0.58
AZ
16.0
11.0
12.0
2.65
0.591
13.00
0.42
0.69
BA
5.0
6.0
8.0
1.53
0.354
6.33
-1.89
-1.62
BB
11.0
11.0
12.0
0.58
0.118
11.33
-0.16
0.12
BC
12.0
1.2.0
12.0
0.00
0.000
12.00
0.07
0.35
BOi
- - ... v ...
BH
14.0
14.0
12.0
1.15
0.236
13.33
0.54
0.81
BK
13.0
14.0
14.0
0.58
0.118
13.67
0.65
0.92
BL
12.0
12.0
13.0
0.58
0.118
12.33
0.19
0.46
BM
13.0
12.0
12.0
0.58
0.118
12.33
0.19
0.46
BN
13.0
12.0
12.0
0.58
0.118
12.33
0.19
0.46
BO
9.0
11.0
13.0
2.00
0.473
11.00
-0.27
0.00
BS
SWllliilllll
lillll
ry~ .-ttf
¦¦¦li
BW
10.0
17.0
12.0
3.61
0.827
13.00
0.42
0.69
C
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.35
CA
10.0
11.0
12.0
1.00
0.236
11.00
-0.27
0.00
CE
10.0
13.0
12.0
1.53
0.354
11.67
-0.04
0.23
CO
&MHHI
BfPIII
SpllilSlliSi
•
CJ
12.0
13.0
10.0
L53
0.354
11.67
-0.04
0.23
CK
15.0
15.0
12.0
1.73
0.354
14.00
0.77
1.04
CM
19.0
18.0
18.0
0.58
0.118
18.33
2.27
2.54
CO
12.0
10.0
11.0
1.00
0.236
11.00
-0.27
0.00
CP
275.0
278.0
270.0
1.53
0.354
276.33 9L64 91.91 x
CQ
12.0
13.0
14.0
1.00
0.236
13.00
0.42
0.69
CS
11.0
10.0
10.0
0.58
0.118
10.33
-0.50
-0.23
CX
12.0
15.0
14.0
1.53
0.354
13.67
0.65
0.92
D
DB
1—!
¦III!
'*<&?¦¦ 'i V"'> ^
liplllip
MM*
SSp:pia|
•
" 'I
DD
13.0
12.0
13.0
0.58
0.118
12.67
0.31
0.58
DE
12.0
12.0
12.0
0.00
0.000
12.00
0.07
0.35
DG
13,0
150
16.0
1.53
0.354
14.67
1.00
1.27
DJ
' 'v X*' ' ,r s ^
liiilBIIil
iiiiiifiHiHH
DL
9.0
12.0
11.0
1.53
0.354
10.67
-0.39
-0.12
• 3
No data submitted
TAG SYMBOLS
It h Above control limit
0 a
vs
Insufficient data
x = Determined to be an outlier
li s Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
40/44
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Sigma
10.0
12.0
11.0
1.00
10.0
100
7.0
1.73
10.0
13.0
10.0
1.73
14.0
14.0
14.0
0.00
14.0
13.0
9.0
2.65
11.0
11.0
11.0
0.00
11.0
12.0
14.0
1.53
Normalized deviation
DM
DO
DS
DT
DZ
E
EB
EL
EO
EB
*evS§
EX
FF
FJ
FL
FN
14.0
11.0
12.0
12.0
12.0
12.0
12.0
14.0
12.0
1.15
1.53
0.00
0.236
0.354
0.354
0.000
0.591
0.000
0.354
Sii'X.-z&H.-.Wi
0.236
0.354
0.000
11.00
11.00
mmmm
i
• ¦
12.33
12.00
•8:SS!3$i!
• ¦..¦.•¦¦ v:vK
-------
(F-
41/44
CRD>LV Performance Evaluation: Blind-B, 18-Apr-1995
Cesium-137
Lab Res. 1
Res. 2
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R + SR) Average* (grand-avg) (known) Tag
LR
12.0
12.0
10.0
1.15
0.236
11.33
-0.16
0.12
LT
13.0
11.0
13.0
1.15
0.236
12.33
0.19
0.46
M
10.0
11.0
11.0
0.58
0.118
10.67
-0.39
-0.12
MA
12.0
11.0
11.0
0.58 .
0118
11.33
-0.16
0.12
MF
BllfiSfiB
' /»-<" vv£
MP
MQ
MV
MY
N
NA
NT:
O
OF
OS
OX
OY
OZ
P
PA
PB
PO
PI
PM
PQ
PR
PV
PW
Q
QC
47.0 42,0
13.0 12.0
9.0 7.0
11.0
12.0
47.0
11.0
6.0
13.0
2.89
0.591
46.33
1.00
0.236
12.00
1.53
0.354
7.33
1.00
0.236
12.00
0.07 0.35
-1.54 -1.27
NH
12.0
12.0
11.0
0.58
0.118
NI -
Mmmmmm
IPIplpilp
NJ
10.0
10.0
10.0
0.00
0.000
NK
10.0
11.0
9.0
1.00
0.236
NO
11.0
11.0
12.0
0.58
0.118
11.67
SiPllP
10.00
10.00
0.07 0.35
HI
-0.04
0.23
-0.62
-0.62
-0.16
-0.35
-0.35
0.12
'%W0.
13.0
13.0
11.33
13.0 0.00 0.000 13.00 0.42 0.69
mmmmatmm
22.0
15.0
10.0
20.0
13.0
10.0
19.0
14.0
10.0
mmmm
1.00 0.236 14.00 0.77 1.04
if i:<|«*"•;*• -A
0.00 0.000 10.00 -0.62 -0.35
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
14.0
16.0
12.0
2.00
0.473 .
14.00
0.77
1.04
1.0.0
11.0
10.0
0.58
0 118
10.33
-0.50
-0.23
Hlllll
' r • '
8.0
11.0
12.0
2.08
0.473
10.33
-0.50
-0.23
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
11.0
12.0
12.0
0.58
0.118
11.67
-0.04
0.23
QJ
12.0
16.0
15.0
2.08
0.473
14.33
0.88
1.15
QP
16.0
21.0
22.0
3.21
0.709
19.67
2.73
3.00
QQ
•V ' ">*• t : .':
' + -% "
¦ •-.*
QT
11.0
10.0
11.0
0.58
0.118
10.67
-0.39
-0.12
QU
11.0
10.0
12.0
1.00
0.236
11.00
-0.27
0.00
QW
9.0
10.0
12.0
1.53
0.354
10.33
-0.50
-0.23
QX
15.0
14.0
15.0
0.58
0.118
14.67
1.00
1.27
QY
;Sillpl||g
lllljllllll^iill
81gil|il|
i >>l-x >:
QZ
10.0
10.0
11.0
0.58
0.118
10.33
-0.50
-0.23
KD
•'•'• < TV,
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
JJ s Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
42/44
Cesium* 137
Lab
Res. 1 Res. 2
Exper. Rng anal Nonnalized deviation
Res: 3 Sigma (R + SR) Average (grand-avg) (known) Tag
RE
RF
RG
RJ
RK
RP
RR
RV
RZ
S
sc
SD
SF
SI
SL
SM
SN
SO
;tn
TQ
TS
1Y
U
UA
UE
UG
UK
UN
UP
UQ
UW
UY
VA
VC
11.0
110
9.0
1.15
0.236
10.33
-
Mpsiippi^fc
!|||iSlSll!B
MMM
10.0
10.0
10.0
0.00
0.000
10.00
1M31MBI
PlipIiPl
12.0
11.0
13.0
1.00
0.236
12.00
14.0
12.0
10.0
2.00
0.473
12.00
11.0
12.0
12.0
0.58
0.118
11.67
12.0
11.0
12.0
0.58
0.118
11.67
11.0
9.0
10.0
1.00
0.236
10.00
12.0
13.0
16.0
2.08
0.473
13.67
10.0
13.0
14.0
2.08
0.473
12.33
13.0
13.0
9.0
2.31
0.473
11.67
¦0.50
-0.23
-0.35
13.0
12.0
12.0
11.0
11.0
8.0
12.0
12.0
12.0
11.0
10.0
12.0
11.0
12.0
10.0
12.0
11.0
12.0
11.0
10.0
13.0
12.0
0.07
0.07
-0.04
-0.04
-0.62
0.65
0.19
-0.04
0.35
0.35
0.23
0.23
-0.35
0.92
0.46
0.23
11.0
10.0
1.00
1.00
0.236
0.236
sun
12.00
11.00
0.07
-0.27
0.35
0.00
SR
15.0
9.0
13.0
3.06
0.709
12.33
0.19
0.46
ss
14.0
15.0
14.0
0.58
0.118
14.33
0.88
1.15
ST
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
sx
12.0
10.0
10.0
1.15
0.236
10.67
-0.39
-0.12
sz
12.0
11.0
12.0
0.58
0.118
11.67
-0.04
0.23
T
10.0
10.0
12.0
1.15
0.236
10.67
-0.39
-0.12
TD
12.0
14.0
13.0
1.00
0.236
13.00
0.42
0.69
TE
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
TH
12.0
11.0
12.0
0.58
0.118
11.67
-0.04
0.23
TI
11.0
11.0
13.0
1.15
0.236
11.67
-0.04
0.23
TL
8.0.
8.0
13.0
2.89
0.591
9.67
-0.73
-0.46
13.0
10.0
10.0
11.0
13.0
10.0
10.0
14.0
11.0
1.00
1.15
1.15
0.58
0.236
0.236
12.00
9.33
'• • • a/r.sw j#"*..?.' L
0.236 11.33
007
-0.85
0.35
-0.58
-0.16 0.12
0.118 11.33 -0.16 0.12
.; - y\t-1 ¦¦ii' '^,y, -. h-^M^Sk
0.58 0.118 12.33 0.19 0.46
0.58 0.118 10.67 -0.39 -0.12
0.00 0.000 10.00 -0.62 -0.35-
1.00 0.236 13.00 0.42 0.69
0.58 0.118 11.33 -0.16 0.12
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft a Above control limit
JJ a Below control limit
-------
| 43/44
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
S\
Cesium-137
'
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VG
10.0
11.0
10.0 0.58
0.118
10.33 -0.50
-0.23
VI
13.0
11.0
13.0 1.15
0.236
12.33 0.19
0.46
VJ
v.;;C v
ligis
-v . ^ • .w. f J,. «. .
. "¦ -v 'y •, *• • f
•
VM
11.0
13.0
12.0 1.00
0.236
12.00 0.07
0.35
VN
IfSlli
IIMSPP
vo
13.0
13.0
11.0 1.15
0.236
12.33 0.19
0.46
Si
VQ
fSHilt
VT
VU
filSf
SlilSSBli
W
11.0
11.0
9.0 1.15
0.236
10.33 -0.50
-0.23
WE
illlll
Itlllfig
iSMiM
npi
fHSft
WF
15.0
14:0
16.0 1.00
0.236
15.00 1.11
139
X
10.0
11.0
13.0 1.53
0.354
11.33 -0.16
0.12
z :
- "7 x"'°" -"" '•'» *
tlllSII
_
• *
Data sorted by Laboratory Averaf
:e
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.33
BA
10.67
M
11.33
IC
7.33
MV
10.67
JG
11.33
GI
9.00
DO
10.67
DL
11.33
BB
9.33
TS
10.67
AI
11.33
AF
9.67
TL
11.00
TE
11.67
TI
9.67
ffl
11.00
ST
11.67
TH
10.00
UW
11.00
SN
11.67
SZ
10.00
SC
11.00
QU
. 11.67
SI
10.00
RK
11.00
PW
11.67
S
10.00
PB
11.00
PI
11.67
RZ
10.00
NK
11.00
JS
11.67
Q
10.00
NJ
11.00
J
11.67
NH
10.00
LF
11.00
EB
11.67
HK
10.00
C
11.00
DT
11.67
GE
10.00
A
11.00
DM
11.67
CJ
10.33
W
11.00
CO
11.67
CE
10.33
VG
11.00
CA
11.67
AE
10.33
RF
11.00
BO
12.00
VM
10.33
QZ
11.00
AH
12.00
TQ
10.33
QW
11.33
X
12.00
SM
10.33
PV
11.33
VA
12.00
RV
10.33
PQ
11.33
UE
12.00
RR
10.33
K
11.33
U
12.00
N
10.33
CS
11.33
NO
12.00
MQ
10.67
UP
11.33
MA
12.00
GQ
10.67
T
11.33
LR
12.00
FU
10.67
sx
11.33
KX
12.00
FL
10.67
QT
11.33
JE
12.00
E
• = No data submitted
TAG SYMBOLS
ft = Above control limit
\ <2 = Insufficient data
x = Determined to be an outlier
11 = Below control limit
y
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
44/44
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
12.00
DE
12.33
A U
13.67
BK
12.00
BC
12.67
L
14.00
PM
12.00
AP
12.67
HP
14.00
P
12.00
AK
12.67
EX
14.00
DZ
12.00
AJ
12.67
DD
14.00
CK
12.33
VO
12.67
AW
14.33
ss
12.33
VI
13.00
UY
14.33
QJ
12.33
UN
13.00
TD
14.67
QX
12.33
SR
13.00
O
14.67
DG
12.33
SF
13.00
I
15.00
WF
12.33
LT
13.00
CQ
15.00
AL
12.33
FJ
13.00
BW
16.00
F2
12.33
EL
13.00
AZ
18.33
CM
12.33
BN
13.33
HL
19.67
QP
12.33
BM
13.33
BH
20.33
X
OZ
12.33
BL
13.67
SD
45.33
X
MP
13.67
CX
276.33
X
CP
% responding labs
Frequency distribution
20-
10-
~6~
T
% responding labs
2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
20-
10-
1b
m.
-6
-4 -2 .0 +2 +4
Normalized deviation of the mean from the grand average
• 2 No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It s Above control limit
U s Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-96/011
February 1996
<&EPA Gamma in Water
Performance
Evaluation Study
A Statistical Evaluation of
the June 9, 1995 Data
Q23RSL96 COv-011
-------
Gamma in Water
Performance Evaluation Study
June 9, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93476
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Gamma in Water; June 9,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivlt
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141
Sincerely,
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995 1/39
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part, is separated from the next hy a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you kee£ control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons '
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/39 CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
The Range Analysis(R + SR) is calculated from the range, mean rang* and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa. CRD-LV. 702/798-214.1
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995 3/39
Cobalt-60 Statistical Summary 191 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 5.0; the control limits
are 31.3 to 48.7; the warning regions are 31.3 to 34.2 and 45.8 to 48.7
20(10.5 %) Failed to respond
154(60.6 %) Within all limits
7(3.7 %) In warning zone
but within control
10(5.2 %) Outliers
Statistic Respondents Non-outliers
Mean
41.91
Grand Avg 39.71
Std. Dev.
23.58
2.52
Variance
555.84
6.33
% Coef. of Var.
56.25
6.34
% deviation of mean from known value
4.78
-0.71
Norm. dev. of mean from known value
Ci.08
-0.11
Median
39.67
39.67
% deviation of median from known value
-0.83
-0.83
Norm. dev. of median from known value
-0.01
-0.13
119(69.6 %) Within 1 norm. S.D.
of known value
11 (6.4 %) More than 3 norm. S.D.
6(3.5 %) Between 2 and 3 norm. S.D
-------
/, —= ¦
4/39 CRD-LV Performance Evaluation
\
: Gumma in Water,
9-
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995 5/39
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DM
38.0
39.0
42.0
2.08
0.473
39.67
-0.02
-0.12
DO
40.0
41.0
38.0
1.53
0.354
39.67
-0.02
-0.12
DT
44.0
39.0
38.0
3.21
0.709
40.33
0.21
0.12
DZ
40.0
39.0
42.0
1.53
0.354
40.33
0.21
0.12
E
40.0
40.0
40.0
0.00
0.000
40.00
0.10
0.00
EA
39.0
39.0
40.0
0.58
0.118
39.33
-0.13
-0.23
EB
38.0
38.0
38.0
0.00
0.000
38.00
-0.59
-0.69
EL
390
370
40.0
1.53
0.354
38.67
-0.36
-0.46
EN
•' ¦
EW
39.0
37.0
43.0
3.06
0.709
39.67
-0.02
-0.12
EX
38.0
44.0
35.0
4.58
1.120
39.00
-0.25
-0.35
EZ
40.0
41.0
43.0
1.53
0.354
41.33
0.56
0.46
FJ
39.0
41.0
40.0
1.00
0.236
40.00
0.10
0.00
FK
- •
FL
40.0
40.0
40.0
0.00
0.000
40.00
0.10
0.00
FU
42.0
39.0
39.0
1.73
0.354
40.00
0.10
0.00
FZ
20,0
25*0
18.0
3.61
0827
2i:00
-6.48
-6.68 x-
GE
37.0
39.0
41.0
2.00
0.473
39.00
-0.25
-0.35
GI
38.0
39.0
40.0
1.00
0.236
39.00
-0.25
-0.35
GL
40.0
40.0
39.0
0.58
0.118
39.67
-0.02
-0.12
GQ
44.0
43.0
42.0
1.00
0.236
43.00
1.14
1.04
m
47.0
49.0
53.0
3.06
0.709
4967
£45
¦ 3.35 i:'
HJ
46.0
46.0
40.0
3.46
0.709
44.00
1.48
1.39
HK
40.0
39.0
41.0
1.00
0.236
40.00
0.10
0.00
HL
39.0
39.0
39.0
0.00
0.000
39.00
-0.25
-0.35
HP
38.0
39.0
38.0
0.58
0.118
38.33
-0.48
-0.58
HX
42.0
42.0
38.0
2.31
0.473
40.67
0.33
0.23
I
44.0
43.0
38.0
3.21
0.709
41.67
0.68
0.58
IC
38.0
40.0
39.0
1.00
0.236
39.00
-0.25
-0.35
J
41.0
41.0
40.0
0.58
0.118
40.67
0.33
0.23
JE
40.0
41.0
38.0
1.53
0.354
39.67
-0.02
-0.12
JG
41.0
37.0
38.0
2.08
0.473
38.67
-0.36
-0.46
JI
36.0
37.0
35.0
1.00
0.236
36.00
-1.29
-1.39
JS
40.0
40.0
40.0
0.00
0.000
40.00
0.10
0.00
JY
340.0
346.0
3400
v' 2.89
0.691
341:67
104.60 '
104.50 *
K
31.0
38.0
33.0
3.61
0.827
34.00
-1.98
-2.08
KH
40.0
41.0
41.0
0.58
0.118
40.67
0.33
0.23
KL
38.0
37.0
37.0
0.58
0.118
37.33
-0.82
-0.92
KX
39.0
40.0
38.0
1.00
0.236
39.00
-0.25
-0.35
L
44.0
44.0
45.0
0.58
0.118
44.33
1.60
1.50
LE
40.0
34.0
40.0
3.46
0.709
38.00
-0.59
-0.69
LF
42.0
40.0
39.0
1.53
0.354
40.33
0.21
0.12
LR
40.0
43.0
37.0
3.00
0.709
40.00
0.10
0.00
LT
40.0
40.0
40.0
0.00
0.000
40.00
0.10
0.00
M
38.0
36.0
39.0
1.53
0.354
" 37.67
-0.71
-0.81
ill "I
• Q
J
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft 3 Above control limit
U s Below control limit
-------
® ' 39 CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Cobalt-60
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
MA
:¦ ' • .¦•:•*. -A- ¦¦ '
ML
49.0
52.0
45.0
3.51
0.827
48.67
3.10
3.00
MP
41.0
42.0
41.0
0.58
0.118
41.33
0.56
0.46
MQ
41.0
41.0
34.0
4.04
0.827
38.67
-0.36
-0.46
MV
44.0
46.0
48.0
2.00
0.473
46.00
2.18
2.08
MY
'0-'*
•
N
43.0
41.0
42.0
1.00
0.236
42.00
0.79
0.69
NH
36.0
37.0
37.0
0.58
0.118
36.67
-1.06
-1.15
NJ
37.0
39.0
38.0
1.00
0.236
38.00
-0.59
-0.69
NK
26.0
35.0
30.0
5.00
1.345
30.00
-3.37
-3.46 - x
NO
35.0
36.0
36.0
0.58
0.118
35.67
-1.40
-1.50
NP
40.0
42.0
38.0
2.00
0.473
40.00
0.10
0.00
NZ
55.0
37.0
51.0
9.45
3.146
47.67
2.75
2.66
O
44.0
44.0
44.0
0.00
0.000
44.00
1.48
1.39
OA
37.0
38.0
38.0
0.58
0.118
37.67
-0.71
-0.81
OB
37.0
35.0
40.0
2.52
0.591
37.33
-0.82
-0.92
OK
36.0
37.0
38.0
1.00
0.236
37.00
-0.94
-1.04
OL
44.0
49.0
36.0
6.56
2.020
43.00
1.14
1.04
OM
38.0
38.0
38.0
0.00
0.000
38.00
-0.59
-0.69
OZ
42.0
41.0
42.0
0.58
0.118
41.67
0.68
0.58
P
52.0
51.0
55.0
2.08
0.473
52.67
4.49
4.39 x
PB
39.0
40.0
41.0
1.00
0.236
40.00
0.10
0.00
PE
•
PI
39.0
39.0
38.0
0.58
0.118
38.67
-0.36
-0.46
PM
42.0
50.0
46.0
4.00
0.945
46.00
2.18
2.08
PQ
34.0
36.0
40.0
3.06
0.709
36.67
-1.06
-1.15
PU
ES!lfK::?P
- - •
PV
40.0
36.0
40.0
2.31
0.473
38.67
-0.36
-0.46
PW
37.0
38.0
39.0
100
0.236
38.00
-0.59
-0.69
Q
38.0
37.0
39.0
1.00
0.236
38.00
-0.59
-0.69
QJ
•
QP
39.0
38.0
38.0
0.58
0.118
38.33
-0.48
-0.58
QT
36.0
37.0
38.0
1.00
0.236
37.00
-0.94
-1.04
QU
35.0
36.0
34.0
1.00
0.236
35.00
-1.63
-1.73
QW
33.0
34.0
35.0
1.00
0.236
34.00
-1.98
-2.08
QX
43.0
45.0
45.0
1.15
0.236
44.33
1.60
1.50
QZ
37.0
37.0
40.0
1.73
0.354
38.00
-0.59
-0.69
R
40.0
38.0
39.0
1.00
0.236
39.00
-0.25
-0.35
RF
35.0
37.0
37.0
1.15
0.236
36.33
-1.17
-1.27
RH
33.0
37.0
36.0
2.08
0.473
35.33
-1.52
-1.62
RL
III
•
RO
39.0
40.0
40.0
0.58
0.118
39.67
-0.02
-0.12
RR
41.0
39.0
40.0
1.00
0.236
40.00
0.10
0.00
RU
42.0
45.0
38.0
3.51
0.827
41.67
0.68
0.58
RV
43.0
39.0
37.0
3.06
0.709
39.67
-0.02
-0.12
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
0 = Insufficient data x 3 Determined to be an outlier 11 = Below control limit
-------
X
CRD-LV Performance Evaluation
: Gamma in Water,
9-Jun-1995
7/3®
Cobalt-60
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grnnd-avg)
(known) Tag
KX
-> - "¦'¦
RZ
39.0
37.0
37.0
1.15
0.236
37.67
-0.71
-0.81
S
39.0
40.0
38.0
1.00
0.236
39.00
-0.25
-0.35
sc
39.0
34.0
38.0
2.65
0.591
37.00
-0.94
-1.04
SD
38.0
40.0
43.0
2.52
0.591
40.33
0.21
0.12
SF
41.0
40.0
40.0
0.58
0.118
40.33
0.21
0.12
SI
41.0
44.0
44.0
1.73
0.354
43.00
1.14
1.04
SM
42.0
41.0
43.0
1.00
0.236
42.00
0.79
0.69
SN
38.0
43.0
41.0
2.52
0.591
40.67
0.33
0.23
SR
39.0
38.0
37.0
1.00
0.236
38.00
-0.59
-0.69
ss
39.0
39.0
38.0
0.58
0.118
38.67
-0.36
-0.46
ST
• V
sv
47.0
52.0
51.0
2.65
0.591
50.00
3.56
3,46, »
X
sx
41.0
42.0
43.0
1.00
0.236
42.00
0.79
0.69
sz
37.0
40.0
38.0
1.53
0.354
38.33
-0.48
-0.58
T
37.0
36.0
37.0
0.58
0.118
36.67
-1.06
-1.16
TB
64.0
* 58.0
63.0
3.21
0.709
61.67
7.00
7.51
y
TC
33.0
39.0
42.0
4.58
1.120
38.00
-0.59
-0.69
TD
39.0
43.0
40.0
2.08
0.473
40.67
0.33
0.23
fE'
^ ¦¦^
v.. :
•
TH
38.0
35.0
38.0
1.73
0.354
37.00
-0.94
-1.04
TI
41.0
39.0
40.0
1.00
0.236
40.00
0.10
0.00
TL
34.0
37.0
44.0
5.13
1.345
38.33
-0.48
-0.58
TO
42.0
39.0
39.0
1.73
0.354
40.00
0.10
0.00
TQ
34.0
38.0
40.0
3.06
0.709
37.33
-0.82
-0.92
TB
70.0
71.0
70i0
0.68.
0.118
70 33
10.61
10.51
X
TS
41.0
40.0
39.0
1.00
0.236
40.00
0.10
0.00
U
40.0
41.0
41.0
0.58
0.118
40.67
0,33
0.23
UE
41.°
41.0
39.0
1.15
0.236
40.33
0.21
0.12
UM
•
UN
46.0
43.0
38.0
4.04
0.945
42.33
0.91
0.81
UP
40.0
41.0
40.0
0.58
0.118
40.33
0.21
0.12
UR
45.0
43.0
43.0
1.15
0.236
43.67
1.37
1.27
UT
¦ ¦ : -V v.
UW
39.0
39.0
39.0
0.00
0.000
39.00
-0.25
-0.35
UX
: . ' -V; ^
•"
UY
40.0
42.0
41.0
1.00
0.236
41.00
0.45
0.35
VA
46.0
45.0
44.0
1.00
0.236
45.00
1.83
1.73
VC
40.0
40.0
41.0-
0.58
0.118
40.33
0.21
0.12
VE
151^1111
~'
VG
39.0
39.0
39.0
0.00
0.000
39.00
-0.25
-0.35
VH
37.0
38.0
39.0
1.00
0.236
38.00
-0.59
-0.69
VI
39.0
40.0
39.0
0.58
0.118
39.33
-0.13
-0.23
VM
40.0
39.0
40.0
0.58
0.118
39.67
-0.02
-0.12
VO
42.0
45.0
40.0
2.52
0.591
42.33
0.91
0.81
• H
No data submitted
TAG SYMBOLS
IT s Above control limit
in
<3
Insufficient data
x =
Determined to be an outlier
J)- s Below control limit
jj
-------
8/39
CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
Cobalt-60
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
VR
vs
42.0
40.0
42.0
1.15
0.236
41.33
0.56
0.46
VT
- ' > • -
VU
w
36.0
35.0
37.0
1.00
0.236
36.00
-1.29
-1.39
WD
38.0
36.0
35.0
1.53
0.354
36.33
-1.17
-1.27
WF
40.0
38.0
37.0
1.53
0.354
38.33
-0.48
-0.58
WI
37.0
34.0
39.0
2.52
0.591
36.67
-1.06
-1.15
WJ
43.0
41.0
45.0
2.00
0.473
43.00
1.14
1.04
WK
40.0
28.0
34.0
6.00
1.795
34.00
-1.98
-2.08
X
45.0
43.0
42.0
1.53
0.354
43.33
1.25
1.15
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
21.00
X
FZ
37.67
M
39.00
S
28.33
X
BW
38.00
VH
39.00
R
30.00
X
NK
38.00
TC
39.00
KX
34.00
WK
38.00
SR
39.00
IC
34.00
QW
38.00
QZ
39.00
HL
34.00
K
38.00
Q
39.00
GI
35.00
QU
38.00
PW
39.00
GE
35.00
AI
38.00
OM
39.00
EX
35.00
AH
38.00
NJ
39.00
AZ
35.33
RH
38.00
LE
39.00
AW
35.67
NO
38.00
EB
39.33
VI
35.67
A
38.00
BC
39.33
EA
36.00
W
38.33
WF
39.33
DH
36.00
J1
38.33
TL
39.33
AJ
36.33
WD
38.33
SZ
39.67
VM
36.33
RF
38.33
QP
39.67
RV
36.67
WI
38.33
HP
39.67
RO
36.67
T
38.33
DD
39.67
JE
36.67
PQ
38.33
CS
39.67
GL
36.67
NH
38.33
CK
39.67
EW
36.67
AN
38.33
AK
39.67
DO
37.00
TH
38.67
ss
39.67
DM
37.00
SC
38.67
PV
39.67
DL
37.00
QT
38.67
PI
39.67
D
37.00
OK
38.67
MQ
39.67
BO
37.00
AY
38.67
JG
39.67
BL
37.33
TQ
38.67
EL
39.67
AF
37.33
OB
38.67
DG
40.00
TS
37.33
KL
38.67
BM
40.00
TO
37.67
RZ
39.00
VG
40.00
TI
37.67
OA
39.00
UW
40.00
RR
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
tr
s Above control limit
s Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
9/39
Cobalt-60
Dnta sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
40.00
PB
40.67
KH
43.00
WJ
40.00
NP
40.67
J
43.00
SI
40.00
LT
40.67
HX
43.00
OL
40.00
LR
40.67
AU
43.00
GQ
40.00
JS
41.00
UY
43.00
BH
40.00
HX
41.00
CQ
43.33
X
40.00
FU
41.00
CA
43.67
UR
40.00
FL
41.00
BB
43.67
BK
40.00
FJ
41.33
vs
44.00
O
40.00
' E
41.33
MP
44.00
HJ
40.00
DE
41.33
EZ
44.00
CE
40.00
BI
41.33
CX
44.00
AL
40.33
VC
41.33
C
44.33
QX
40.33
UP
41.33
BA
44.33
L
40.33
UE
41.67
RU
45.00
VA
40.33
SF
41.67
OZ
46.00
PM
40.33
SD
41.67
I
46.00
MV
40.33
LF
41.67
CP
47.67
NZ
40.33
DZ
42.00
sx
48.67
ML
40.33
DT
42.00
SM
49.67
X
HI
40.33
CC
42.00
N
50.00
X
SV
40.33
AP
42.33
VO
52.67
X
P
40.33
AE
42.33
UN
61.67
X
TB
40.67
U
42.33
CJ
67.33
X
BG
40.67
TD
42.67
CO
70.33
X
TR
40.67
SN
42.67
CM
341.67
X
JY
responding labs
Frequency distribution
Normalized deviation of the mean from the known value
• 3 No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ff = Above control limit
ii 3 Below control limit
-------
^
10 / 39 CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Cobalt-60
% responding labs Frequency distribution
io>
lill
f ¦¦¦ iflL.
'» i T " i T i — " r i ~ i r
-6 -4 -2 0+2+4 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jan-1995
11/39
Zinc-65 Statistical Summary 191 Participants
The known value of this nuclide is 78.0 pCi/1 with an expected precision of 8.0; the control limits
are 62.1 to 89.9; the warning regions are 62.1 to 66.7 and 85.3 to 89.9
22(11.5 %) Failed to respond
10(5.2 %) Outliers '
2( 1.0 %) Out of control *
but not an outlier
Statistic
134(70.2 %) Within all limits
Respondents
* 23(12.0 %) In warning zone
but within control
Non-outliers
Mean
87.37
Grand Avg 78.75
Std. Dev.
75.19
5.52
Variance
5653.88
30.48
% Coef. of Var.
86.06
7.01
% deviation of mean from known value
14.96
3.62
Norm. dev. of mean from known value
0.15
0.50
Median
79.33
79.33
% deviation of median from known value
4.39
4.39
Norm. dev. of median from known value
0.04
0.60
12(7.1 %) More than 3 norm. S.D.
.84(49.7 %) Within 1 norm. S.D.
of known value
-------
ff
12/39
CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
^
Zinc-65
\
Lab
Res. 1
Res. 2
Exper.
Rag anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
67.0
75.0
75.0
4.62
0.591
72.33
-1.39
-0.79
AE
88.0
77.0
77.0
6.35
0.812
80.67
0.41
1.01
AF
82.0
78.0
79.0
2.08
0.295
79.67
0.20
0.79
AH
76.0
71.0
75.0
2.65
0.369
74.00
-1.03
-0.43
AI
68.0
74.0
71.0^
3.00
0.443
71.00
. -1.68
-1.08
AJ
79.0
82.0
77.0
2.52
0.369
79.33
0.13
0.72
AK
76.0
78.0
78.0
1.15
0.148
77.33
-0.31
0.29
AL
92.0
85.0
91.0
3.79
0.517
89.33
2.29
2.89
AN
76.0
77.0
80.0
2.08
0.295
77.67
-0.23
0.36
AP
74.0
76.0
83.0
4.73
0.665
77.67
-0.23
0.36
AU
80.0
69.0
72.0
5.69
0.812
73.67
-1.10
-0.51
AW
75.0
77.0
74.0
1.53
0.222
75.33
-0.74
-0.14
AY
70.0
74.0
65.0
4.51
0.665
69.67
-1.97
-1.37
AZ
90.0
84.0
85.0
3.21
0.443
86.33
1.64
2.24
BA
805.0
831.0
798.0
17.39
3.736
811.33
158.61
159.20
X
BB
81.0
85.0
83.0
2.00
0.295
83.00
0.92
1.52
BC
81.0
82.0
77.0
2.65
0.369
80.00
0.27
0.87
BG
105.0
117.0
105.0
6.93
0.886
r mob
6;55
- :7;i4-
X
BH
82.0
86.0
84.0
2.00
0.295
84.00
1.14
1.73
BI
11.0
90.0
10.0
45.90
10.346
37.00
-9.04
-8.44
X
BK
93.0
93.0
94.0
0.58
0.074
93.33
3.16
3.75
ir
BL
71.0
70.0
73.0
1.53
0.222
71.33
-1.61
-1.01
BM
75.0
77.0
80.0
2.52
0.369
77.33
-0.31
0.29
BN
sf
•
BO
79.0
81.0
78.0
1.53
0.222
79.33
0.13
0.72
BW
26.0
26.0
32.0
3.46
0.443
28.00
-10.99
-10.39
C
83.0
88.0
82.0
3.21
0.443
84.33
1.21
1.80
CA
74.0
78.0
80.0
3.06
0.443
77.33
-0.31
0.29
CC
87.0
87.0
87.0
0.00
0.000
87.00
1.79
2.38
CE
86.0
89.0
88.0
1.53
0.222
87.67
i.93
2.53
CG
CJ
79.0
86.0
82.0
3.51
0.517
82.33
0.78
1.37
CK
70.0
74.0
68.0
3.06
0.443
70.67
-1.75
-1.15
CM
89.0
85.0
88.0
2.08
0.295
87.33
1.86
• 2.45
CO
82.0
69.0
83.0
7.81
1.064
78.00
-0.16
0.43
CP
82.0
80.0
81.0
1.00
0.148
81.00
0.49
1.08
CQ
77.0
82.0
85.0
4.04
0.591
81.33
0.56
1.15
CS
79.0
83.0
85.0
3.06
0.443
82.33
0.78
1.37
CX
82.0
84.0
77.0
3.61
0.517
81.00
0.49
1.08
D
80.0
76.0
82.0
3.06
0.443
79.33
0.13
0.72
DD
79.0
78.0
76.0
1.53
0.222
77.67
-0.23
0.36
DE
75.0
75.0
76.0
0.58
0.074
75.33
-0.74
-0.14
DG
68.0
74.0
74.0
3.46
0.443
72.00
-1.46
-0.87
DH
74.0
74.0
73.0
0.58
0.074
73.67
-1.10
-0.51
DL
74.0
67.0
72.0
3.61
0.517
71.00
-1.68
-1.08
• =
No data submitted
TAG SYMBOLS
ff s Above control limit
in
S
—¦y
Insufficient data
x =
Determined to be an outlier
U = Below control limit
— jj
-------
ft
CRD-LV Performance Evaluation
: Gamma in Water,
9-Jun-1995
13/39
Zinc-65
¦<
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
78.0
79.0
83.0
2.65
0.369
80.00
0.27
0.87
DO
64.0
88.0
73.0
12.12
2.470
75.00
-0.81
-0.22
DT
75.0
86.0
73.0
7.00
0.960
78.00
-0.16
0.43
DZ
65.0
67.0
64.0
1.53
0.222
65.33
-2.90
-2.31
E
81.0
81.0
76.0
2.89
0.369
79.33
0.13
0.72
EA
73.0
74.0
80.0
3.79
0.517
75.67
-0.67
-0.07
EB
83.0
84.0
85.0
1.00
0.148
84.00
1.14
1.73
EL
76.0
77.0
80.0
2.08
0.295
77.67
-0.23
0.36
EN
-•
EW
76.0
73.0
75.0
1.53
0.222
74.67
-0.88
-0.29
EX
83.0
78.0
81.0
2.52
0.369
80.67
0.41
1.01
EZ
75.0
90.0
72.0
9.64
1.627
79.00
0.05
0.65
FJ
86.0
89.0
85.0
2.08
0.295
86.67
1.71
2.31
FK
— < V'/ ^ J
•
FL
81.0
79.0
77.0
2.00
0.295
79.00
0.05
0.65
FU
75.0
74.0
73.0
1.00
0.148
74.00
-1.03
-0.43
FZ
38.0
37.0
340
2.08
0.296
36^33
-918
-8.59 x
GE
74.0
74.0
72.0
1.15
0.148
73.33
-1.17
-0.58
GI
80.0
81.0
83.0
1.53
0.222
81.33
0.56
1.15
GL
81.0
79.0
79.0
1.15
0.148
79.67
0.20
0.79
GQ
85.0
89.0
94.0
4.51
0.665
89.33
2.29
2.89
HI
82.0
86.0
75.0
5.57
0.812
81.00
0.49
1.08
HJ
77.0
84.0
80.0
3.51
0.517
80.33
0.34
0.94
HK
84.0
82.0
82.0
1.15
0.148
82.67
0.85
1.44
HL
83.0
83.0
83.0
0.00
0.000
83.00
0.92
1.52
HP
73.0
77.0
74.0
2.08
0.295
74.67
-0.88
-0.29
HX
79.0
77.0
80.0
1.53
0.222
78.67
-0.02
0.58
I
73.0
77.0
83.0
5.03
0.738
77.67
-0.23
0.36
IC
82.0
84.0
76.0
4.16
0.591
80.67
0.41
1.01
J
79.0
80.0
79.0
0.58
0.074
79.33
0.13
0.72
JE
77.0
77.0
78.0
0.58
0.074
77.33
-0.31
0.29
JG
75.0
63.0
62.0
7.23
0.960
66.67
•2.62
-2.02
JI
74.0
76.0
72.0
2.00
0.295
74.00
-1.03
-0.43
JS
77.0
84.0
80.0
3.51
0.517
80.33
0.34
0.94
JY
728.0
678.0
660.0
35.23
8.658
688 67
132.06
132.65 x
K
71.0
70.0
69.0
1.00
0.148
70.00
-1.89
-1.30
KH
80.0
79.0
79.0
0.58
0.074
79.33
0.13
0.72
KL
73.0
70.0
66.0
3.51
0.517
69.67
-1.97
-1.37
KX
74.0
77.0
76.0
1.53
0.222
75.67
-0.67
-0.07
L
89.0
90.0
90.0
0.58
0.074
89.67
2.36
2.96
LE
279.0
265.0
291.0
18.33
"u 4il58
27500
42.49
4308 x
LF
70.0
77.0
81.0
5.57
0.812
76.00
-0.60
0.00
LR
86.0
69.0
64.0
11.53
2.189
73.00
-1.25
-0.65
LT
82.0
79.0
84.0
2.52
0.369
81.67
0.63
1.23
M
79.0
80.0
79.0
0.58
0.074
79.33
0.13
0.72
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
l0s
Insufficient data
x =
Determined to be an outlier
II s Below control limit J
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
/
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
MA
ML
97.0
101.0
108.0
5.57
0.812
102.00
5.03
5.63 x
MP
82.0
81.0
79.0
1.53
0.222
80.67
0.41
1.01
MQ
91.0
70.0
80.0
10.50
2.049
80.33
0.34
0.94
MV
85.0
88.0
890
2.08
0.295
87.33
1.86
2.45
MY
: v.'-: ; •
N
81.0
79.0
84.0
2.52
0.369
81.33
0.56
1.15
NH
80.0
79.0
79.0
0.58
0.074
79.33
0.13
0.72 .
NJ
75.0
79.0
75.0
2.31
0.295
76.33
-0.52
0.07
NK
71.0
79.0
73.0
4.16
0.591
74.33
-0.96
-0.36
NO
79.0
88.0
90.0
5.86
0.812
85.67
1.50
2.09
NP
76.0
78.0
76.0
1.15
0.148
76.67
-0.45
0.14
NZ
50.0
86.0
86.0
20.78
4.158
74.00
-1.03
-0.43
O
87.0
87.0
86.0
0.58
0.074
86.67
1.71
2.31
OA
76.0
77.0
81.0
2.65
0.369
78.00
-0.16
0.43
OB
; '-1
iifMHPi
OK
69.0
70.0
75.0
3.21
0.443
71.33
-1.61
-1.01
OL
90.0
75.0
76.0
8.39
1.205
80.33
0.34
0.94
OM
67.0
68.0
68.0
0.58
0.074
67.67
-2.40
-1.80
OZ
79.0
80.0
79.0
0.58
0.074
79.33
0.13
0.72
P
90.0
94.0
101.0
5.57
0.812
95.00
3.52
4.11 tr
PB
76.0
75.0
76.0
0.58
0.074
75.67
-0.67
-0.07
PE
•
PI
76.0
71.0
78.0
3.61
0.517
75.00
-0.81
-0.22
PM
80.0
92.0
76.0
8.33
1.345
82.67
0.85
1.44
PQ
67.0
64.0
70.0
3.00
0.443
67.00
-2.54
-1.95
PU
,
laiipiiai
PV
69.0
77.0
80.0
5.69
0.812
75.33
-0.74
-0.14
PW
74.0
74.0
83.0
5.20
0.665
77.00
-0.38
0.22
Q
77.0
77.0
78.0
0.58
0074
77.33
-0.31
0.29
Qjr
Ifgjlggfg
®|S§
QP
1 iV* - '
QT
80.0
72.0
72.0
4.62
0.591
74.67
-0.88
-0.29
QU
75.0
72.0
72.0
1.73
0.222
73.00
-1.25
-0.65
QW
72.0
76.0
76.0
2.31
0.295
74.67
-0.88
-0.29
QX
79.0
76.0
73.0
3.00
0.443
76.00
-0.60
0.00
QZ
82.0
80.0
80.0.
1.15
0.148
80.67
0.41
1.01
R
80.0
81.0
87.0
3.79
0.517
82.67
0.85
1.44
RF
41.0
41.0
41.0
0.00
0.000
4too
*8-17
-7.68 ' x'
RH
71.0
64.0
71.0
4.04
0.517
68.67
-2.18
-1.59
RL
1HMM1
" / r: f '' '+y~
RO
76.0
85.0
84.0
4.93
0.665
81.67
0.63
1.23
RR
77.0
76.0
79.0
1.53
0.222
77.33
-0.31
0.29
RU
85.0
76.0
78.0
4.73
0.665
79.67
0.20
0.79
RV
75.0
72.0
76.0
2.08
0.295
74.33
-0.96
-0.36
• a 1
No data submitted
TAG SYMBOLS
It = Above control limit
0 5 Insufficient data x = Determined to be an outlier II = Below control limit
-------
CRD-LV Performance Evaluation
: Gamma in Water,
9-Jun-1995
15/39
Zinc-65
Lab
Res. 1
Res. 2
Res: 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normali2ed deviation
(grand-avg) (known) Tag
RX
¦' ....
- • -
RZ
82.0
81.0
79.0
1.53
0.222
80.67
0.41
1.01
S
75.0
77.0
76.0
1.00
0.148
76.00
-0.60
0.00
sc
72.0
89.0
72.0
9.81
1.486
77.67
-0.23
0.36
SD
78.0
95.0
96.0
10.12
1.627
89.67
2.36
2.96
SF
80.0
81.0
80.0
0.58
0.074
80.33
0.34
0.94
SI
89.0
86.0
86.0
1.73
0.222
87.00
1.79
2.38
SM
88.0
93.0
84.0
4.51
0.665
88.33
2.07
2.67
SN
87.0
71.0
71.0
9.24
1.345
76.33
-0,52
0.07
SR
84.0
82.0
84.0
1.15
0.148
83.33
0.99
1.59
ss
710
82.0
81.0
6.08
0.812
78.00
-0.16
0.43
ST
sv
78.0
85.0
76.0
4.73
0.665
79.67
0.20
0.79
sx
83.0
85.0
86.0
1.53
0.222
84.67
1.28
1.88
sz
79.0
81.0
80.0
1.00
0.148
80.00
0.27
0.87
T
75.0
70.0
69.0
3.21
0.443
71.33
-1.61
-1.01
TB
114.0
122.0
113.0
4.93
0.665
11633
814
8.73
X
TC
77.0
78.0
80.0
1.53
0.222
78.33
-0.09
0.51
TD
TE
84.0
79.0
79.0
2.89
0.369
' ¥
80.67
0.41
1.01
>VJ.
•
TH
73.0
66.0
75.0
4.73
0.665
71.33
-1.61
-1.01
TI
81.0
85.0
81.0
2.31
0.295
82.33
0.78
1.37
TL
€6.0
66.0
78.0
6.93
0.886
70.00
-1.89
-1.30
TO
86.0
85.0
85.0
0.58
0.074
85.33
1.43
2.02
TQ
81.0
77.0
85.0
4.00
0.591
81.00
0.49
1.08
TR
72.0
66.0
81.0
7.55
1.205
73.00
-1.25
-0.65
TS
77.0
84.0
81.0
3.51
0.517
80.67
0.41
1.01
U
77.0
76.0
77.0
0.58
0.074
76.67
-0.45
0.14
UE
710
69.0
73.0
2.00
0.295
71.00
-1.68
-1.08
UM
' ':;C
UN
86.0
81.0
74.0
6.03
0.886
80.33
0.34
0.94
UP
83.0
85.0
82.0
1.53
0.222
83.33
0.99
1.59
UR
89.0
83.0
91.0
4.16
0.591
8767
1.93
2.53
UT
UW
810
77.0
770
2.31
0.295
78.33
-0.09
0.51
UX
'i ¦ • '
•
UY
84.0
82.0
75.0
4.73
0.665
80.33
0.34
0.94
VA
87.0
87.0
87.0
0.00
0.000
87.00
1.79
2.38
VC
81.0
83.0
78.0
2.52
0.369
80.67
0.41
1.01
VE
•
VG
80.0
79.0
77.0
1.53
0.222
78.67
-0.02
0.58
VH
74.0
80.0
77.0
3.00
0.443
77.00
-0.38
0.22
VI
82.0
86.0
83.0
2.08
0.295
83.67
1.06
1.66
VM
86.0
86.0
86.0
0.00
0.000
86.00
1.57
2.17
VO
81.0
80.0
76.0
2.65
0.369
79.00
0.05
0.65
• =
No data submitted
TAG SYMBOLS
"f! s Above control limit
Insufficient data
X 3
Determined to be an outlier
li = Below control limit
-------
! 39 CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
VR
_>-V\
vs
900
890
80 0
5.51
0.738
86.33
1.64
2.24
VT
*
SgtfllgJ
VU
W
80.0
70.0
71.0
5.51
0.738
73.67
-1.10
-0.51
WD
76.0
82.0
80.0
3.06
0.443
79.33
0.13
0.72
WF
79.0
76.0
75.0
2.08
0.295
76.67
-0.45
0.14
WI
53.0
64.0
80.0
13.58
2.892
65.67
-2.83
-2.24
WJ
84.0
82.0
85.0
1.53
0.222
83.67
1.06
1.66
WK
62.0
79.0
71.0
8.50
1.486
70.67
-1.75
-1.15
X
95.0
87.0
80.0
7.51
1.205
87.33
1.86
2.45
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
28.00
X
BW
73.67
AU
77.33
JE
36.33
X
FZ
74.00
NZ
77.33
CA
37.00
X
BI
. 74.00
JI
77.33
BM
41.00
X
RF
74.00
FU
77.33
AK
65.33
DZ
74.00
AH
77.67
SC
65.67
WI
74.33
RV
77.67
I
66.67
JG
74.33
NK
77.67
EL
67.00
PQ
74.67
QW
77.67
DD
67.67
OM
74.67
QT
77.67
AP
68.67
RH
74.67
HP
77.67
AN
69.67
KL
74.67
EW
78.00
SS
69.67
AY
75.00
PI
78.00
OA
70.00
TL
75.00
DO
78.00
DT
70.00
K
75.33
PV
78.00
CO
70.67
WK
75.33
DE
78.33
UW
70.67
CK
75.33
AW
78.33
TC
71.00
UE
75.67
PB
78.67
VG
71.00
DL
75.67
KX
78.67
HX
71.00
AI
75.67
EA
79.00
VO
71.33
TH
76.00
S
79.00
FL
71.33
T
76.00
QX
79.00
EZ
71.33
OK
76.00
LF
79.33
WD
71.33
BL
76.33
SN
79.33
OZ
72.00
DG
76.33
NJ
79.33
NH
72.33
A
76.67
WF
79.33
M
73.00
TR
76.67
U
79.33
KH
73.00
QU
76.67
NP
79.33
J
73.00
LR
77.00
VH
79.33
E
73.33
GE
77.00
PW
79.33
D
73.67
W
77.33
RR
79.33
BO
73.67
DH
77.33
Q
79.33
AJ
• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft
s Above control limit
= Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Zinc<65
Data sorted by Laboratory Average
Average
Tan
Lab
Average
Tag
Lab
Average
Tag
Lab
79.67
SV
81.00
CX
86.00
VM
79.67
RU
81.00
CP
86.33
vs
79.67
GL
81.33
N
86.33
AZ
79.67
AF
81.33
GI
86.67
O
80.00
SZ
81.33
CQ
86.67
FJ
80.00
DM
81.67
RO
87.00
VA
80.00
BC
81.67
LT
87.00
SI
80.33
UY
82.33
TI
87.00
CC
80.33
UN
82.33
CS
87.33
X
80.33
SF
82.33
CJ
87.33
MV
80.33
OL
82.67
R
87.33
CM
80.33
MQ
82.67
PM
87.67
UR
80.33
JS
82.67
HK
87.67
CE
80.33
HJ
83.00
HL
88.33
SM
80.67
VC
83.00
BB
89.33
GQ
80.67
TS
83.33
UP
89.33
AL
80^67
TD
83.33
SR
89.67
SD
80.67
RZ
83.67
WJ
89.67
L
80.67
QZ
83.67
VI
93.33
1t
BK
80.67
MP
84.00
EB
95.00
1t
P
80.67
IC
84.00
BH
102.00
X
ML
80.67
EX
84.33
C
109.00
X
BG
80.67
AE
84.67
sx
116.33
X
TB
81.00
TQ
85.33
TO
275.00
X
LE
81.00
HI
85.67
NO
688.67
811.33
X
X
JY
BA
17/39
responding labs
Frequency distribution
10-
"T"
-6
lllirfliwi
% responding labs
4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
10*
-2 0 +2
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
tT = Above control limit
II = Below control limit
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EXPOSURE RESEARCH LABORATORY
P.O. BOX 93478 • LAS VEGAS, NV 89193-3478
OFFICE OF
RESEARCH AND DEVELOPMENT
A note regarding the Cesium-134 portion of the June 9, 1995
Gamma in Water Performance Evaluation Study:
The difference between the grand average and the known value was
significant for this study. The primary peak for Cs-134 (604.7) is subject
to coincidence summing, resulting in a negative bias if quantified using
commercial mixed standards. Efficiency factors based on these standards do
not correctly quantify peaks subject to summing, and in general produce a
negative bias as was observed. This bias will be minimized if the efficiency
is calculated using a separate Cs-134 standard or a previous PE study.
Please direct any questions to Steve Pia at 702 798-2102.
Recycled/Recyclable • Printed with Vegetable Oil Based Inks on 100% Recycled Paper (40% PosJoonsumer)
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
18/39
Cesium-134 Statistical Summaiy 191 Participants
The known value of this nuclide is 50.0 pCi/i with an expected precision of 5.0; the control limits
are 41.3 to 58.7; the warning regions are 41.3 to 44.2 and 55.8 to 58.7
20(10.5 %) Failed to respond •»«,
* »
5(2.6 %) Outliers '
19(9.9 %) Out of control
but not an outlier
Statistic
, 104(54.5 %) Within all limits
Respondents
43(22.5 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
47.37
24.61
605.69
51.95
-5.26
-0.11
45.67
-8.67
-0.18
Grand Avg 45.65
3.99
15.90
8.74
-8.71
-1.09
45.50
-9.00
-1.13
43(25.1 %) Within 1 norm. S.D.
of known value
25(14.6 %) More than 3 norm. S.D.
-------
C( =
19/39
CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
^
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
38.0
41.0
41.0
1.73
0.354
40.00
-1.96
-3.46
AE
50.0
50.0
43.0
4.04
0.827
47.67
0.70
-0.81
AF
45.0
46.0
47.0
1.00
0.236
46.00
0.12
-1.39
AH
42.0
43.0
42.0
0.58
0.118
42.33
-1.15
-2.66
AI
42.0
42.0
42.0
0.00
0.000
42.00
-1.26
-2.77
AJ
43.0
43.0
43.0
0.00
0.000
43.00
-0.92
-2.42
AK
46.0
44.0
45.0
1.00
0.236
45.00
-0.22
-1.73
AL
44.0
46.0
45.0
1 00
0.236
45.00
-0.22
-1.73
AN
51.0
47.0
48.0
2.38
0.473
48.67
1.05
-0.46
AP
45.0
48.0
50.0
2.52
0.591
47.67
0.70
-0.81
AU
44.0
43.0
45.0
1.00
0.236
44.00
-0.57
-2.08
AW
40.0
42.0
40.0
1.15
0.236
40.67
-1.73
-3.23
U
AY
49.0
47.0
48.0
1.00
0.236
48.00
0.82
-0.69
AZ
55.0
61.0
59.0
3.06
0.709
58.33
4.39
2.89
BA
49.0
47.0
48.0
1.00
0.236
48.00
0.82
-0.69
BB
47.0
48.0
48.0
0.58
0.118
47.67
0.70
-0.81
BC
43.0
42.0
43.0
0.58
0.118
42.67
-1.03
-2.54
BG
61.0
48.0
68.0
10.15
3.596
59.00
4.63
3.12
IT
BH
48.0
50.0
47.0
1.53
0.354
48.33
0.93
-0.58
BI
70.0
69.0
sii9.ds
6.08
1.570
66.00
- 7.06 *
5.54
X
BK
53.0
53.0
52.0
0.58
0.118
52.67
2.43
0.92
BL
43.0
45.0
43.0
1.15
0.236
43.67
-0.69
-2.19
BM
44.0
45.0
45.0
0.58
0.118
44.67
-0.34
-1.85
BN
•
BO
48.0
46.0
48.0
1.15
0.236
47.33
0.58
-0.92
BW
35.0
39.0
36.0
2.C8
0.473
36.67
-3.11
-4.62
C
50.0
50.0
49.0
0.58
0.118
49.67
1.39
-0.12
CA
47.0
45.0
46.0
1.00
0.236
46.00
0.12
-1.39
CC
48.0
47.0
48.0
0.58
0.118
47.67
0.70
-0.81
CE
50.0
49.0
49.0
0.58
0.118
49.33
1.28
-0.23
CG
1.0
1.0
1.0
0.00
„ o.ooo
1.00
-15.47
-16.97
X ^
CJ
46.0
45.0
49.0
2.06
0.473
46.67
0.35
-1.15
CK
45.0
44.0
44.0
0.58
0.118
44.33
-0.45
-1.96
CM
50.0
48.0
46.0
2.00
0.473
48.00
0.82
-0.69
CO
45.0
47.0
46.0
1.03
0.236
46.00
0.12
-1.39
CP
46.0
47.0
47.0
0.53
0.118
46.67
0.35
-1.15
CQ
45.0
48.0
50.0
2.52
0.591
47.67
0.70
-0.81
CS
45.0
46.0
42.0
2.03
0.473
44.33
-0.45
-1.96
CX
47.0
47.0
46.0
0.58
0.118
46.67
0.35
-1.15
D
42.0
43.0
48.0
3.21
0.709
44.33
-0.45
-1.96
DD
46.0
46.0
47.0
0.58
0.118
46.33
0.24
-1.27
DE
45.0
45.0
44.0
0.58
0.118
44.67
-0.34
-1.85
DG
45.0
46.0
44.0
1.00
0.236
45.00
-0.22
-1.73
DH
42.0
43.0
43.0
0.58
0.118
42.67
-1.03
-2.54
DL
47.0
45.0
45.0
1.15
0.236
45.67
0.01
-1.50
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
0 a
Insufficient data
X s
Determined to be an outlier
!!• = Below control limit
-------
((
CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
^
20/39
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
47.0
45.0
43.0
2.00
0.473
45.00
-0.22
-1.73
DO
43.0
49.0
40.0
4.58
1.120
44.00
-0.57
-2.08
DT
46.0
43.0
46.0
1.73
0.354
45.00
-0.22
-1.73
DZ
36.0
40.0
38.0
2.00
0.473
38.00
-2.65
-4.16
E
46.0
47.0
46.0
0.58
0.118
46.33
0.24
-1.27
EA
49.0
48.0
44.0
2.65
0.591
47.00
0.47
-1.04
EB
42.0
42.0
42.0
0.00
0.000
42.00
-1.26
-2.77
EL
49.0
44.0
47.0
2.52
0.591
46.67
0.35
•1.15
EN
\ . v.,- ,
EW
47.0
46.0
47.0
0.58
0.118
46.67
0.35
-1.15
EX
46.0
49.0
45.0
2.08
0.473
46.67
0.35
-1.15
EZ
45.0
48.0
48.0
1.73
0.354
47.00
0.47
-1.04
FJ
48.0
49.0
49.0
0.58
0.118
48.67
1.05
-0.46
FK
^ • ' . - '.-.V'Vvi
- •...
FL
44.0
46.0
45.0
1.00
0.236
45.00
-0.22
-1.73
FU
45.0
46.0
44.0
1.00
0.236
45.00
-0.22
-1.73
FZ
25.0
24.0
24.0
0.58
0.118
24.33
' -7.38
889
x :
GE
44.0
47.0
45.0
1.53
0.354
45.33
-0.11
-1.62
GI
41.0
43.0
43.0
1.15
0.236
42.33
-1.15
-2.66
GL
40.0
41.0
41.0
0.58
0.118
40.67
-1.73
-3.23
U
GQ
54.0
57.0
58.0
2.08
0.473
56.33
3.70
2.19
m
52.0
52.0
52.0
0.00
0.000
52.00
2.20
0.69
HJ
48.0
52.0
48.0
2.31
0.473
49.33
1.28
-0.23
HK
46.0
48.0
47.0
1.00
0.236
47.00
0.47
-1.04
HL
46.0
46.0
46.0
0.00
0.000
46.00
0.12
-1.39
HP
46.0
47.0
46.0
0.58
0.118
46.33
0.24
-1.27
HX
43.0
42.0
44.0
1.00
0.236
43.00
-0.92
-2.42
I
48.0
49.0
40.0
4.93
1.120
45.67
0.01
-1.50
IC
55.0
53.0
51.0
2.00
0.473
53.00
2.55
1.04
J
51.0
51.0
50.0
0.58
0.118
50.67
1.74
0.23
JE
44.0
43.0
42.0
1.00
0.236
43.00
-0.92
-2.42
JG
39.0
40.0
42.0
1.53
0.354
40.33
-1.84
-3.35
JI
44.0
43.0
45.0
1.00
0.236
44.00
-0.57
-2.08
JS
49.0
47.0
49.0
1.15
0.236
48.33
0.93
-0.58
JY
346.0
383.0
343.0
22.28
8.096
357.33
107.97
106.46
*x '
K
41.0
41.0
41.0
0.00
0.000
41.00
-1.61
-3.12
KH
41.0
39.0
40.0
1.00
0.236
40.00
-1.96
-3.46
Jl
KL
44.0
41.0
42.0
1.53
0.354
42.33
-1.15
-2.66
KX
45.0
51.0
44.0
3.79
0.827
46.67
0.35
-1.15
L
50.0
51.0
52.0
1.00
0.236
51.00
1.85
0.35
LE
62.0
51.0
53.0
5.86
1.570
55.33
3.36
1.85
LF
45.0
48.0
45.0
1.73
0.354
46.00
0.12
-1.39
LR
54.0
52.0
49.0
2.52
0.591
51.67
2.09
0.58
LT
49.0
46.0
49.0
1.73
0.354
48.00
0.82
-0.69
M
43.0
42.0
43.0
0.58
0.118
42.67
-1.03
-2.54
• =
No data submitted
TAG SYMBOLS
It = Above control limit
0 =
«
Insufficient data
X s
Determined to be an outlier
11 = Below control limit
-V
-------
(j
21/39
\
CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
Cesium-134
\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
MA
ML
53.0
54.0
52.0
1.00
0.236
53.00
2.55
1.04
MP
46.0
48.0
47.0
1.00
0.236
47.00
0.47
-1.04
MQ
45.0
41.0
46.0
2.65
0.591
44.00
-0.57
-2.08
MV
50.0
51.0
500
0.58
0.118
50.33
1.62
0.12
MY
'' "'l"'
# *¦ <
N
48.0
47.0
44.0
2.08
0.473
46.33
0.24
-1.27
NH
44.0
43.0
43.0
0.58
0.118
43.33
-0.80
-2.31
NJ
42.0
44.0
43.0
1.00
0.236
43.00
-0.92
-2.42
NK
41.0
35.0
39.0
3.06
0.709
38.33
-2.53
-4.04
U
NO
43.0
46.0
50.0
3.51
0.827
46.33
0.24
-1.27
NP
42.0
43.0
41.0
1.00
0.236
42.00
-1.26
-2.77
NZ
42.0
29.0
42.0
7.51
2.020
37.67
-2.76
-4.27
U
O
51.0
51.0
51.0
0.00
0.000
51.00
1.85
0.35
OA
45.0
44.0
45.0
0.58
0.118
44.67
-0.34
-1.85
OB
•V-
OK
42.0
44.0
41.0
1.53
0.354
42.33
-1.15
-2.66
OL
57.0
53.0
50.0
3.51
0.827
53.33
2.66
1.15
OM
42.0
42.0
42.0
0.00
0.000
42.00
-1.26
-2.77
OZ
43.0
45.0
42.0
1.53
0.354
43.33
-0.80
-2.31
P
52.0
53.0
53.0
0.58
0.118
52.67
2.43
0.92
PB
45.0
45.0
45.0
0.00
0.000
45.00
-0.22
-1.73
PE
•
PI
43.0
41.0
44.0
1.53
0.354
42.67
-1.03
-2.54
PM
45.0
43.0
44.0
1.00
0.236
44.00
-0.57
-2.08
PQ
44.0
37.0
39.0
3.61
0.827
40;°9
-1.96
-3.46
A.
PU
T - /-\"
PV
34.0
40.0
39.0
3.21
0.709
37.67
-2.76
-4.27
iT
PW
47.0
46.0
46.0
0.58
0.118
46.33
0.24
-1.27
Q
43.0
43.0
46.0
1.73
0354
44.00
-0.57
-2.08
QJ
•
QP
52.0
46.0
46.0
3.46
0.709
48.00
0.82
-0.69
QT
44.0
44.0
43.0
0.58
0.118
43.67
-0.69
-2.19
QU
40.0
40.0
41.0
0.58
0.118
40.33
-1.84
-3.35
ii
QW
41.0
38.0
39.0
1.53
0.354
39.33
-2.19
-3.70
u
QX
45.0
45.0
46.0
0.58
0.118
45.33
-0.11
-1.62
QZ
42.0
42.0
41.0.
0.58
0.118
41.67
-1.38
-2.89
R
47.0
47.0
47.0
0.00
0.000
47.00
0.47
-1.04
RF
48.0
48.0
48.0
0.00
0.000
48.00
0.82
-0.69
RH
44.0
44.0
44.0
0.00
0.000
44.00
-0.57
-2.08
RL
RO
45.0
44.0
46.0
1.00
0.236
45.00
-0.22
-1.73
RR
44.0
42.0
42.0
1.15
0.236
42.67
-1.03
-2.54
RU
50.0
50.0
43.0
4.04
0.827
47.67
0.70
-0.81
RV
48.0
48.0
50.0
1.15
0.236
48.67
1.05
-0.46
• =
No data submitted
TAG SYMBOLS
It = Above control limit
0 3
Insufficient data
x =
Determined to be an outlier
II = Below control limit
-ii
-------
(f
V
CRD-LV Performance Evaluation
i: Gamma in Water,
9-Jun-1995
22/39
Cesium-134
Lab
Res. 1
Res. 2
Res: 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tne
HX
RZ
46.0
46.0
46.0
0.00
0.000
46.00
0.12
-1.39
S
45.0
45.0
45.0
0.00
0.000
45.00
-0.22
-1.73
sc
41.0
47.0
45.0
3.06
0.709
44.33
-0.45
-1.96
SD
47.0
47.0
50.0
1.73
0.354
48.00
0.82
-0.69
SF
46.0
46.0
43.0
1.73
0.354
45.00
-0.22
-1.73
SI
47.0
50.0
52.0
2.52
0.591
49.67
1.39
-0.12
SM
53.0
49.0
48.0
2.65
0.591
50.00
1.51
0.00
SN
50.0
52.0
50.0
1.15
0.236
50.67
1.74
0.23
SR
48.0
46.0
46.0
1.15
0.236
46.67
0.35
-1.15
ss
49.0
49.0
47.0
1.15
0.236
48.33
093
-0.58
' ST
- •• - •
sv
41.0
41.0
39.0
1.15
0.236
40.33
-1.84
-3.35
sx
43.0
43.0
42.0
0.58
0.118
42.67
-1.03
-2.54
sz
44.0
45.0
44.0
0.58
0.118
44.33
-0.45
-1.96
T
45.0
45.0
47.0
1.15
0.236
45.67
0.01
-1.50
TB
76.0
73.0
1.53
0.354
74.67
."*10.06"""'
8.54
* •<•.'¦¦¦*; ....
X--/
TC
47.0
40.0
45.0
3.61
0.827
44.00
-0.57
-2.08
TD
45.0
48.0
44.0
2.08
0.473
45.67
_ 0.01
-1.50
TE
¦' * •
•v".'
TH
43.0
44.0
44.0
0.58
0.118
43.67
-0.69
-2.19
TI
48.0
48.0
47.0
0.58
0.118
47.67
0.70
-0.81
TL
42.0
44.0
47.0
2.52
0.591
44.33
-0.45
-1.96
TO
55.0
54.0
53.0
1.00
0.236
54.00
2.89
1.39
TQ
44.0
44.0
44.0
0.00
0.000
44.00
-0.57
-2.08
TR
33.0
34.0
34.0
0.58
0.118
33.67
-4.15
-5.66
u
TS
48.0
45.0
46.0
1.53
0.354
46.33
0.24
-1.27
U
48.0
48.0
47.0
0.58
0.118
47.67
0.70
-0.81
UE
49.0
51.0
49.0
1.15
0.236
49.67
1.39
-0.12
UM
>x"
~ J-
•
UN
46.0
39.0
51.0
6.03
1.795
45.33
-0.11
-1.62
UP
44.0
44.0
42.0
1.15
0.236
43.33
-0.80
-2.31
UR
52.0
53.0
53.0
0.58
0.118
52.67
2.43 '
0.92
UT
..J'
~ ,•
UW
48.0
' 49.0
48.0
0.58
0118
48.33 _
0.93
-0.58
UX
c " *¦ ^ \ 3
r-s
UY
43^0
44.0
41.0
1.53
0.354
42.67
-1.03
-2.54
VA
46.0
47.0
45.0
1.00
0.236
46.00
0.12
-1.39
VC
49.0
46.0
47.0
1.53
0.354
47.33
0.58
-0.92
VE
•
VG
44.0
43.0
43.0
0.58
0.118
43.33
-0.80
-2.31
VH
41.0
41.0
43.0
1.15
0.236
41.67
-1.38
-2.89
VI
39.0
39.0
37.0
1.15
0.236
38.33
-2.53
-4.04
VM
49.0
52.0
51.0
1.53
0.354
50.67
1.74
0.23.
VO
50.0
46.0
50.0
2.31
0.473
48.67
1.05
-0.46
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
-i/
-------
23/39
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
^
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average ' (grand-avg) (known) Tag
VR
4
* + '' ' t ' ~
^ • ,
vs
44.0
410
43.0 1.53
0.354
42.67
-1.03 -2.54
VT
-
VU
SSif
-
w
43.0
43.0
43.0 0.00
0.000
43.00
-0.92 -2.42
WD
42.0
44.0
41.0 1.53
0.354
42.33
-1.15 -2.66
WF
44.0
41.0
39.0 2.52
0.591
41.33
-1.49 -3.00
WI
39.0
41.0
38.0 1.53
0.354
39.33
-2.19 -3.70
WJ
46.0
45.0
47.0 1.00
0.236
46.00
0.12 -1.39
WK
44.0
45.0
45.0 0.58
0.118
44.67
-0.34 -1.85
X
50.0
49.0
48.0 1.00
0.236
49.00
1.16 -0.35
Data sorted by Laboratory Averaj
fe
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.00
X
CG
42.33
AH
44.33
SZ
24.33
X
FZ
42.67
VS
44.33
sc
33.67
11
TR
42.67
UY
44.33
D
36.67
Ji
BW
42.67
SX
44.33
CS
37.67
U
PV
42.67
RR
44.33
CK
37.67
11
NZ
42.67
PI
44.67
WK
38.00
U
DZ
42.67
M
44.67
OA
38.33
U
VI
42.67
DH
44.67
DE
38.33
li
NK
42.67
BC
44.67
BM
39.33
WI
43.00
W
45.00
SF
39.33
u
QW
43.00
NJ
45.00
S
40.00
PQ
43.00
JE
45.00
RO
40.00
li
KH
43.00
HX
45.00
PB
40.00
JJ
A
43.00
AJ
45.00
FU
40.33
SV
43.33
VG
45.00
FL
40.33
U
QU
43.33
UP
45.00
DT
40.33
U
JG
43.33
OZ
45.00
DM
40.67
U
GL
43.33
NH
45.00
DG
40.67
U
AW
43.67
TH
45.00
AL
41.00
U
K
43.67
QT
45.00
AK
41.33
WF
43.67
BL
45.33
UN
41.67
VH
44.00
TQ
45.33
QX
41.67
QZ
44.00
TC
45.33
GE
42.00
OM
44.00
RH
45.67
TD
42.00
NP
44.00
Q
45.67
T
42.00
EB
44.00
PM
45.67
I
42.00
AI
44.00
MQ
45.67
DL
42.33
WD
44.00
JI
46.00
WJ
42.33
OK
44.00
DO
46.00
VA
42.33
KL
44.00
AU
46.00
RZ
42.33
GI
44.33
TL
46.00
LF
• s No data submitted
TAG SYMBOLS
11 3 Above control limit
0 = Insufficient data
x = Determined to be an out lier
li 3 Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
24/39
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
46.00
HL
47.67
U
49.67
UE
46.00
CO
47.67
TI
49.67
SI
46.00
CA
47.67
RU
49.67
C
46.00
AF
47.67
CQ
50.00
SM
46.33
TS
47.67
CC
50.33
MV
46.33
PW
47.67
BB
50.67
VM
46.33
NO
47.67
AP
50.67
SN
46.33
N
47.67
AE
50.67
J
46.33
HP
48.00
SD
51.00
O
46.33
£
48.00
RF
51.00
L
46.33
DD
48.00
QP
51.67
LR
46.67
SR
48.00
LT
52.00
HI
46.67
KX
48.00
CM
52.67
UR
46.67
EX
48.00
BA
52.67
P
46.67
EW
48.00
AY
52.67
BK
46.67
EL
48.33
UW
53.00
ML
46.67
CX
48.33
ss
53.00
IC
46.67
CP
48.33
JS
53.33
OL
46.67
CJ
48.33
BH
54.00
TO
47.00
R
48.67
VO
55.33
LE
47.00
MP
48.67
RV
56.33
GQ
47.00
HK
48.67
FJ
58.33
AZ
47.00
EZ
48.67
AN
59.00
It
BG
47.00
EA
49.00
X
66.00
X
BI
47.33
VC
49.33
HJ
74.67
X
TB
47.33
BO
49.33
CE
357.33
X
JY
% responding labs Frequency distribution
10-
a, , ¦ Bf fwM I , ¦ ,ff
-6 -4.-2 0 +2 +4 +4
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10-
oJ*r 1 -r ¦i"1
+2
Normalized deviation of the mean from the grand average
• a No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
11 s Above control limit
II s Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
25/39
Cesium-137 Statistical Summary 191 Participants
The known value of this nuclide is 35.0 pCi/1 with an expected precision of 5.0; the control limits
are 26.3 to 43.7; the warning regions are 26.3 to 29.2 and 40.8 to 43.7
19(9.9 %) Failed to respond
10(5.2 %) Outliers 4
Statistic
. 151(79.1 %) Within all limits
Respondents
~11 (5.8 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
38.14
23.01
529.37
60.32
8.98
0.14
35.67
1.90
0.03
Grand Avg 35.49
2.90
8.42
8.18
1.40
0.17
35.33
0.95
0.11
10(5.8 %) More than 3 norm. S.D
11 (6.4 %) Between 2 and 3 norm. S.D.
. 113(65.7 %) Within 1 norm. S.D.
! of Known value
38(22.1 %) Between 1 and 2 norm. S.D.
-------
26/39
CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
^
Cesium-137
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
30.0
34.0
33.0
2.08
0.473
32.33
-1.09
-0.92
AE
38.0
38.0
37.0
0.58
0.118
37.67
0.75
0.92
AF
33.0
37.0
36.0
2.08
0.473
35.33
-0.05
0.12
AH
33.0
34.0
34.0
0.58
0.118
33.67
-0.63
-0.46
AI
32.0
31.0
32.0
0.58
0.118
31.67
-1.32
-1.15
AJ
34.0
34.0
37.0
1.73
0.354
35.00
-0.17
0.00
AK
36.0
36.0
35.0
0.58
0.118
35.67
0.06
0.23
AL
26.0
22.0
23.0
2.08
0.473
23.67
-4.10
*3.93 ;x
AN
34.0
38.0
35.0
2.08
0.473
35.67
0.06
0.23
AP
35.0
36.0
37.0
1.00
0.236
36.00
0.18
0.35
AU
35.0
33.0
36.0
1.53
0.354
34.67
-0.29
-0.12
AW
38.0
38.0
34.0
2.31
0.473
36.67
0.41
0.58
AY
30.0
32.0
34.0
2.00
0.473
32.00
-1.21
-1.04
AZ
41.0
34.0
43.0
4.73
1.120
39.33
1.33
1.50
BA
29.0
31.0
31.0
1.15
0.236
30.33
-1.79
-1.62
BB
35.0
34.0
35.0
0.58
0.118
34.67
-0.29
-0.12
BC
34.0
35.0
35.0
0.58
0.118
34.67
-0.29
-0.12
BG
40.0
31.0
24.0
8.02
2.695
31.67
-1.32
-1.15
BH
33.0
39.0
38.0
3.21
0.709
36.67
0.41
0.58
BI
25.0
31.0
37.0
6.00
1.795
31.00
-1.56
-1.39
BK
43.0
43.0
42.0
0.58
0.118
42.67
2.49
2.66
BL
34.0
34.0
34.0
0.00
0.000
34.00
-0.52
-0.35
BM
35.°
360
35.0
0.58
0118
35.33
-0.05
0.12
BN
BO
35.0
34.0
36.0
1.00
0.236
35.00
-0.17
0.00
BW
36.0
32.0
29.0
3.51
0.827
32.33
-1.09
-0.92
C
56.0
53.0 .
61.0
4.04
0.946
: 56.67
7.34
" 7.61 ; x *'
CA
36.0
36.0
38.0
1.15
0.236
36.67
0.41
0.58
CC
36.0
35.0
35.0
0.58
0.118
35.33
-0.05
0.12
CE
41.0
40.0
38.0
1.53
0.354
39.67
1.45
1.62
CG
68.0
63.0
45.0
11.68
4.271
65.33
6.&? "
7.04 x
CJ
37.0
37.0
39.0
1.15
0.236
37.67
0.75
0.92
CK
38.0
32.0
31.0
3.79
0.827
33.67
-0.63
-0.46
CM
38.0
36.0
33.0
2.52
0.591
35.67
0.06
0.23
CO
40.0
41.0
38.0
1.53
0.354
39.67
1.45
1.62
CP
35.0
34.0
35.0
0.58
0.118
34.67
-0.29
-0.12
CQ
43.0
39.0
41.0
2.00
0.473
41.00
1.91
2.08
CS
35.0
37.0 .
35.0
1.15
0.236
35.67
0.06
0.23
CX
39.0
36.0
39.0
1.73
0.354
38.00
0.87
1.04
D
34.0
34.0
36.0
1.15
0.236
34.67
-0.29
-0.12
DD
36.0
36.0
36.0
0.00
0.000
36.00
0.18
0.35
DE
34.0
34.0
34.0
0.00
0.000
34.00
-0.52
-0.35
DG
44.0
49 0
45.0
: 2.65
0.691
46.00
3.64
3.81 "x
DH
34.0
34.0
34.0
0.00
0.000
34.00
-0.52
-0.35
DL
32.0
37.0
33.0
2.65
0.591
34.00
-0.52
-0.35
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
in
(S
Insufficient data
x =
Determined to be an outlier
U = Below control limit
'J
-------
(r—
CRD-LV Performance Evaluation
: Gamma in Water,
9-Jun-1995
" —
27/39
Cesium-137
-
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rnganal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tae
DM
35.0
36.0
36.0
0.58
0.118
35.67
0.06
0.23
DO
28.0
29.0
30.0
1.00
0.236
29.00
-2.25
-2.08
DT
36.0
34.0
41.0
3.61
0.827
37.00
0.52
0.69
DZ
43.0
38.0
41.0
2.52
0.591
40.67
1.79
1.96
E
37.0
35.0
38.0
%
1.53
0.354
36.67
0.41
0.58
EA
33.0
32.0
33.0
0.58
0.118
32.67
-0.98
-0.81
EB
36.0
36.0
36.0
0.00
0.000
36.00
0.18
0.35
EL
34.0
35.0
35.0
0.58
0118
34.67
-0.29
-0.12
EN
; '"xL ¦ "
EW
35.0
34.0
34.0
0^58
0.118
34.33
-0.40
-0^23
EX
36.0
33.0
34.0
1.53
0.354
34.33
-0.40
-0.23
EZ
41.0
37.0
38.0
2.08
0.473
38.67
1.10
1.27
FJ
37.0
33.0
37.0
2.31
0.473
35.67
0.06
0.23
FK
* ~ J;,1*, *
FL
35.0
37.0
36.0
1.00
0.236
36.00
0.18
0.35
FU
33.0
33.0
32.0
0.58
0.118
32.67
-0.98
-0.81
FZ
180
170
170
0.68
0118
wvv -v.*** w
17.33
;}-6:29
' -6il2 x
GE
34.0
32.0
33.0
1.00
0.236
33.00
-0.86
-0.69
GI
35.0
35.0
36.0
0.58
0.118
35.33
-0.05
0.12
GL
36.0
35.0
33.0
1.53
0.354
34.67
-0.29
-0.12
GQ
37.0
40.0
40.0
1.73
0.354
39.00
1.22
1.39
m
39.0
43.0
48.0
4.51
1.120
43.33
2.72
2.89
HJ
35.0
33.0
34.0
1.00
0.236
34.00
-0.52
-0.35
HK
38.0
36.0
35.0
1.53
0.354
36.33
0.29
0.46
HL
37.0
37.0
37.0
0.00
0.000
37.00
0.52
0.69
HP
39.0
37.0
37.0
1.15
0.236
37.67
0.75
0.92
HX
35.0
35.0
36.0
0.58
0.118
35.33
-0.05 ,
0.12
I
32.0
34.0
37.0
2.52
0.591
34.33
-0.40
-0.23
IC
39.0
38.0
38.0
0.58
0.118
38.33
0.99
1.15
J
36.0
35.0
35.0
0.58
0.118
35.33
-0.05
0.12
JE
34.0
34.0
34.0
0.00
0.000
34.00
-0.52
-0.35
JG
32.0
35.0
33.0
1.53
0.354
33.33
-0.75
-0.58
JI
35.0
37.0
33.0
2.00
0.473
35.00
-0.17
0.00
JS
37.0
37.0
35.0
1.15
0.236
36.33
0.29
0.46
JY
3i£o
2§60
335 0
19.60
7.871
314.33
^6SKrv
K
34.0
32.0
33.0
1.00
0.236
33.00
-0.86
-0.69
KH
38.0
37.0
37.0
0.58
0.118
37.33
0.64
0.81
KL
34.0
34.0
32.0
1.15
0.236
33.33
-0.75
-0.58
KX
34.0
35.0
34.0
0.58
0.118
34.33
-0.40
-0.23
L
39.0
39.0
39.0
0.00
0.000
39.00
1.22
1.39
T.E
6&0
46.0V *
42.0
7.37 C.:
2.245
41 67
4:22
LF
32.0
36.0
37.0
2.65
0.591
35.00
-0.17
0.00
LR
36.0
35.0
37.0
1.00
0.236
36.00
0.18
0.35
LT
38.0
35.0
38.0
1.73
0.354
37.00
0.52
0.69
M
34.0
34.0
34.0
0.00
0.000
34.00
-0.52
-0.35
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 =
^
Insufficient data
x =
Determined to be an outlier
s Below control limit
'J
-------
: . =
28 / 39 CRD-LV Performance Evaluation
l: Gamma in Water,
9-Jun-1995
^
Cesium-137
¦
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
MA
ML
65.0
60.0
54.0
6.51
1.570
59.67
8.38
8.54
X
MP
37.0
35.0
37.0
1 15
0.236
36.33
0.29
0.46
MQ
37.0
47.0
36.0
6 08
1.570
40.00
1.56
1.73
MV
440
420
43.0
1 00
0.236
43.00
2.60
2.77
MY
•
N
36.0
35.0
38.0
1.53
0.354
36.33
0.29
0.46
NH
35.0
38.0
36.0
1.53
0.354
36.33
0.29
0.46
NJ
33.0
35.0
34.0
1.00
0.236
34.00
-0.52
-0.35
NK
26.0
33.0
33.0
4.04
0.827
30.67
-1.67
-1.50
NO
35.0
36.0
38.0
1.53
0.354
36.33
0.29
0.46
NP
34.0
33.0
32.0
1.00
0.236
33.00
-0.86
-0.69
NZ
30.0
27.0
29.0
1.53
0.354
28.67
-2.36
-2.19
0
39.0
39.0
40.0
0.58
0.118
39.33
1.33
1.50
OA
33.0
33.0
36.0
1.73
0.354
34.00
-0.52
-0.35
OB
33.0
34.0
32.0
1.00
0.236
33.00
-0.66
-0.69
OK
28.0
27.0
26.0
1.00
0.236
27.00
-2.94
-2.77
OL
32.0
38.0
34.0
3.06
0.709
34.67
-0.29
-0.12
OM
36.0
36.0
35.0
0.58
0.118
35.67
0.06
0.23
OZ
35.0
36.0
34.0
1.00
0.236
35.00
-0.17
0.00
P
41.0
40.0
42.0
1.00
0.236
41.00
1.91
2.08
PB
35.0
35.0
35.0
0.00
0.000
35.00
-0.17
0.00
PE
•
PI
35.0
33.0
34.0
1.00
0.236
34.00
-0.52
-0.35
PM
35.0
42.0
36.0
3.79
0.827
37.67
0.75
0.92
PQ
30.0
33.0
30.0
1.73
0.354
31.00
-1.56
-1.39
PU
•
PV
29.0
33.0
34.0
2.65
0.591
32.00
-1.21
-1.04
PW
35.0
35.0
35.0
0.00
0.000
35.00
-0.i7
0.00
Q
34.0
35.0
36.0
1.00
0.236
35.00
-0.17
0.00
QJ
' •
QP
38.0
41.0
40.0
1.E3
0.354
39.67
1.45
1.62
QT
34.0
33.0
34.0
0.58
0.118
33.67
-0.63
-0.46
QU
26.0
28.0
27.0
1.00
0.236
27.00
-2.94
-2.77
QW
27.0
28.0
27.0
0.58
0.118
27.33
-2.83
-2.66
ox
39.0
39.0
38.0
0.58
0.118
38.67
1.10
1.27
QZ
34.0
35.0
34.0
0.58
0.118
34.33
-0.40
-0.23
R
36.0
38.0
39.0
1.53
0.354
37.67
0.75
0.92
RF
32.0
32.0
31.0
0.58 '
0.118
31.67
-1.32
-1.15
RH
36.0
34.0
33.0
1.53
0.354
34.33
-0.40
-0.23
RL
f-
«
RO
36.0
36.0
36.0
0.0D
0.000
36.00
0.18
0.35
RR
35.0
33.0
35.0
1.15
0.236
34.33
-0.40
-0.23
RU
39.0
41.0
34.0
3.61
0.827
38.00
0.87
1.04
RV
42.0
46.0
34.0
6.11
1.795
40.67
1.79
1.96
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
hi
S
Insufficient data
X 3
Determined to be an outlier
<11 a Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
29/39
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tn«r
KX
¦ ¦ ¦,
y A
RZ
33.0
31.0
32.0
1.00
0.236
32.00
-1.21
-1.04
S
36.0
35.0
35.0
0.58
0.118
35.33
-0.05
0.12
sc
32.0
37.0
37.0
2.89
0.591
35.33
-0.05
0.12
SD
36.0
41.0
43.0
3.61
0.827
40.00
1.56
1.73
SF
41.0
39.0
37.0
2.00
0.473
39.00
1.22
1.39
SI
37.0
39.0
37.0
1.15
0.236
37.67
0.75
0.92
SM
36.0
40.0
39.0
2.08
0.473
38.33
0.99
1.15
SN
39.0
41.0
37.0
2.00
0.473
39.00
1.22
1.39
SR
35.0
34.0
38.0
2.08
0.473
35.67
0.06
0.23
ss
40.0
37j0
42.0
2.52
0.591
39.67
1.45
1.62
ST
sv
35.0
37.0
39.0
2.00
0.473
37.00
0.52
0.69
sx
33.0
32.0
33.0
0.58
0.118
32.67
-0.98
-0.81
sz
36.0
36.0
36.0
0.00
0.000
36.00
0.18
0.35
T
36.0
36.0
36.0
0.00
0.000
36.00
0.18
0.35
TB
58.0
53.0
53.0
2.89 ¦
0.591
•T;;'54M
6.64
6.81
X
TC
36.0
35.0
40.0
2.65
0.591
37.00
0.52
0.69
TD
35.0
36.0
32.0
2.08
0.473
34.33
-0.40
-0.23
TE
•
TH
34.0
34.0
35.0
0.58
0.118
34.33
-0.40
-0.23
n
36.0
36.0
37.0
0.58
0.118
36.33
0.29
0.46
TL
26.0
27.0
34.0
4.36
0.945
29.00
-2.25
-2.08
TO
38.0
38.0
38.0
0.00
0.000
38.00
0.87
1.04
TQ
35.0
36.0
34.0
1.00
0.236
35.00
-0.17
0.00
TR
33.0
36.0
38.0
2.52
0.591
35.67
0.06
0.23
TS
36.0
32.0
38.0
3.06
0.709
35.33
-0.05
0.12
U
36.0
35.0
34.0
1.00
0.236
35.00
-0.17
0.00
UE
34.0
35.0
36.0
1.00
0.236
35.00
-0.17
0.00
UM
"•kj* >r-
•
UN
41.0
32.0
41.0
5.20
1.120
38.00
0.87
1.04
UP
36.0
37.0
35.0
1.00
0.236
36.00
0.18
0.35
UR
34.0
39.0
39.0
2.89
0.591
37.33
0.64 _
0.81
UT
:r ,;.y v;"
UW
33.0
36.0
36.0
1.73
0.354
35.00
-0.17
0.00
UX
' '."V
UY
30.0
31.0
33.0
1.53
0.354
31.33
-1.44
-1.27
VA
34.0
35.0
38.0
2.08
0.473
35.67
0.06
0.23
VC
370
38.0
38.0
0.58
0118
37.67
0.75
0.92
VE
•
VG
31.0
30.0
32.0
1.00
0.236
31.00
-1.56
-1.39
VH
33.0
32.0
32.0
0.58
0.118
32.33
-1.09
-0.92
VI
36.0
36.0
36.0
0.00
0.000
36.00
0.18
0.35
VM
37.0
37.0
37.0
0.00
0.000
37.00
0.52
0.69.
VO
38.0
40.0
38.0
1.15
0.236
38.67
1.10
1.27
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
1.0-
Insufficient data
x =
Determined to be an outlier
•d s Below control limit
-------
(c
30/39
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
^
Cesium-137
T 1_
Exper.
Rng anal
Normalized deviation
Lab
Kes. 1 Kes. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VR
•
vs
44.0
41.0
37.0 3.51
0827
40.67
1.79
1.96
VT
•
VU
•
W
36.0
34.0
31.0 2.52
0.591
33.67
0.63
•0.46
WD
33.0
34.0
34.0 0.58
0.118
33.67
0.63
-0.46
WF
36.0
37.0
37.0 0.58
0.118
36.67
0.41
0.58
WI
35.0
40.0
40.0 2.89
0.591
38.33
0.99
1.15
WJ
35.0
38.0
35.0 1.73
0.354
36.00
0.18
0.35
WK
140.0 }
L32.0
U
>6.0 4.00
0.945
13
6.00 34.82
34.99
x ,
X
39.0
41.0
36.0 2.52
0.591
38.67
1.10
1.27
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
17.33
X
FZ
33.33
JG
34.67
BB
23.67
X
AL
33.67
WD
34.67
AU
27.00
QU
33.67
W
35.00
UW
27.00
OK
33.67
QT
35.00
UE
27.33
QW
33.67
CK
35.00
U
28.67
NZ
33.67
AH
35.00
TQ
29.00
TL
34.00
PI
35.00
Q
29.00
DO
34.00
OA
35.00
PW
30.33
BA
34.00
NJ
35.00
PB
30.67
NK
34.00
M
35.00
OZ
31.00
VG
34.00
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
31/39
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
35.67
AN
37.00
TC
39.00
SF
35.67
AK
37.00
sv
39.00
L
36.00
WJ
37.00
LT
39.00
GQ
36.00
VI
37.00
HL
39.33
o
36.00
UP
37.00
DT
39.33
AZ
36.00
T
37.33
UR
39.67
ss
36.00
SZ
37.33
KH
39.67
QP
36.00
RO
37.67
VC
39.67
CO
36.00
LR
37.67
SI
39.67
CE
36.00
FL
37.67
R
40.00
SD
36.00
EB
37.67
PM
40.00
MQ
36.00
DD
37.67
HP
40.67
vs
36.00
AP
37.67
CJ
40.67
RV
36.33
TI
37.67
AE
40.67
DZ
36.33
NO
38.00
UN
41.00
P
36.33
NH
38.00
TO
41.00
CQ
36.33
N
38.00
RU
42.67
BK
36.33
MP
38.00
CX
43.00
MV
36.33
JS
38.33
WI
43.33
HI
36.33
HK
38.33
SM
46.00
X
DG
36.67
WF
38.33
IC
47.67
X
LE
36.67
E
38.67
X
54.67
X
TB
36.67
CA
38.67
vo
55.33
X
CG
36.67
BH
38.67
QX
56.67
X
C
36.67
AW
38.67
EZ
59.67
X
ML
37.00
VM
39.00
SN
136.00
314.33
X
X
WK
JY
responding labs
Frequency distribution
10-
—r*
-*6
¦6
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
• = No data submitted TAG SYMBOLS IT = Above control limit
0 = Ins"fficient data x a Determined to be an outlier UsBelow contronimit_j
-------
32 / 39 CRD-LV Performance Evaluation; Gamma in Water, 9-Jun-I995
Cesium-137
% responding labs Frequency distribution
10-
o
a
*i 1 T f ¦ ¦¦ , ¦llBflllf iif rtf ¦¦¦ , ¦ , ¦ , , 1
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
33/39
Barium-133 Statistical Summary 191 Participants
The known value of this nuclide is 79.0 pCi/1 with an expected precision of 8.0; the control limits
are 65.1 to 92.9; the warning regions are 65.1 to 69.7 and 88.3 to 92.9
22(11.5 %) Failed to respond . 145(75.9 %) Within all limits
/
5(2.6 %) Outliers • / \N.
*
«v
6(3.1 %) Out of control •'
13(6.8 %) In warning zone
but not an outlier
^-CLLI |
I
but within control
Statistic
Respondents
Non-outliers
Mean
79.52
Grand Avg 76.16
Std. Dev.
44.59
5.46
Variance
1988.16
29.77
% Coef. of Var.
56.07
7.16
% deviation of mean from known value
0.66
-3.59
Norm. dev. of mean from known value
0.01
-0.52
Median
75.67
75.67
% deviation of median from known value
-4.22
-4.22
Norm. dev. of median from known value
-0.07
-0.61
11 (6.5 %) More than 3 norm. S.D
13(7.7 %) Between 2 and 3 norm. S.D.'
, 75(44.4 %) Within 1 norm. S.D.
of known value
70(41.4 %) Between 1 and 2 norm. S.D.
-------
(¦ - - —
34 / 39 CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
'
Barium-133
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
68.0
74.0
71.0
3.00
0.443
71.00
-1.12
-1.73
AE
88.0
84.0
79.0
4.51
0.665
83.67
1.63
1.01
AF
80.0
82.0
80.0
1.15
0.148
80.67
0.98
0.36
AH
74.0
74.0
71.0
1.73
0.222
73.00
-0.68
-1.30
AI
73.0
72.0
72.0
0.58
0.074
72.33
-0.83
-1.44
AJ
77.0
78.0
79.0
1.00
0.148
78.00
0.40
-0.22
AK
76.0
74.0
73.0
1.53
0.222
74.33
-0.40
-1.01
AL
83.0
78.0
79.0
2.65
0.369
80.00
0.83
0.22
AN
79.0
80.0
89.0
5.51
0.738
82.67
1.41
0.79
AP
71.0
72.0
73.0
1.00
0.148
72.00
-0.90
-1.52
AU
72.0
83.0
76.0
5.57
0.812
77.00
0.18
-0.43
AW
76.0
71.0
72.0
2.65
0.369
73.00
-0.68
-1.30
AY
74.0
69.0
76.0
3.61
0.517
73.00
-0.68
-1.30
AZ
84.0
82.0
82.0
1.15
0.148
82.67
1.41
0.79
BA
77.0
79.0
80.0
1.53
0.222
78.67
0.54
-0.07
BB
75.0
72.0
74.0
1.53
0.222
73.67
-0.54
-1.15
BG
69.0
69.0
70.0
0.58
0.074
69.33
-1.48
-2.09
BG
96.0
82.0
84.0
7.57
1.064
87.33
2.42
1.80
BH
73.0
77.0
74.0
2.08
0.295
74.67
-0.32
-0.94
BI
110;0
91.0 :
108.0
10.44
1.767
103.00
5.81
5.20 *r
BK
80.0
80.0
80.0
0.00
0.000
80.00
0.83
0.22
BL
78.0
75.0
75.0
1.73
0.222
76.00
-0.03
-0.65
BM
86.0
80.0
80.0
3.46
0.443
82.00
1.26
0.65
BN
•
BO
77.0
78.0
78.0
0.58
0.074
77.67
0.33
-0.29
BW
C
87.0
83.0
81.0
3.06
0.443
83.67
1.63
1.01
CA
82.0
81.0
79.0
1.53
0.222
80.67
0.98
0.36
CC
75.0
70.0
67.0
4.04
0.591
70.67
-1.19
-1.80
CE
86.0
80.0
84.0
3.06
0.443
83.33
1.55
0.94
CG
v:: i,
IfllllfSC '¦:#
•
CJ
72.0
76.0
75.0
2.08
0.295
74.33
-0.40
-1.01
CK
70.0
68.0
69.0
1.00
0.148
69.00
-1.55
-2.17
CM
77.0
78.0
85.0
4.36
0.591
80.00
0.83
0.22
CO
82.0
69.0
76.0
6.51
0.960
75.67
-0.11
-0.72
CP
81.0
82.0
80.0
1.00
0.148
81.00
1.05
0.43
CQ
79.0
79.0
82.0
1.73
0.222
80.00
0.83
0.22
CS
72.0
77.0
74.0
2.52
0.369
74.33
-0.40
-1.01
CX
73.0
74.0
73.0
0.58
0.074
73.33
-0.61
-1.23
D
73.0
73.0
77.0
2.31
0.295
74.33
-0.40
-1.01
DD
82.0
84.0
78.0
3.06
0.443
81.33
1.12
0.51
DE
74.0
75.0
75.0
0.58
0.074
74.67
-0.32
-0.94
DG
76.0
75.0
77.0
1.00
0.148
76.00
-0.03
-0.65
DH
72.0
72.0
72.0
0.00
0.000
72.00
-0.90
-1.52
DL
84.0
76.0
82.0
4.16
0.591
80.67
0.98
0.36
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 s
Insufficient data
X s
Determined to be an outlier
U = Below control limit
_
-------
1— — —
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995 35/39
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tmr
DM
74.0
82.0
74.0
4.62
0.591
76.67
0.11
-0.51
DO
80.0
87.0
76.0
5.57
0.812
81.00
1.05
0.43
DT
74.0
76.0
79.0
2.52
0.369
76.33
0.04
-0.58
DZ
80.0
87.0
85.0
3.61
0.517
84.00
1.70
1.08
E
76.0
74.0
75.0
1.00
0.148
75.00
-0.25
-0.87
EA
82.0
79.0
78.0
2.08
0.295
79.67
0.76
0.14
EB
71.0
72.0
72.0
0.58
0.074
71.67
-0.97
-1.59
EL
74.0
86.0
76.0
6.43
0.886
78.67
0.54
-0.07
EN
/:••;>*:
EW
73.0
72.0
74.0
1.00
0.148
73.00
-0.68
-1.30
EX
71.0
73.0
71.0
1.15
0.148
71.67
-0.97
-1.59
EZ
82.0
79.0
76.0
3.00
0.443
79.00
0.61
0.00
FJ 790
75.0
77.0
2.00
0.295
77.00
0.18
-0.43
•' V V' v . s
•
FL
83.0
76.0
83.0
4.04
0.517
80.67
0.98
0.36
FU
77.0
75.0
73.0
2.00
0.295
75.00
-0.25
-0.87
FZ
310
30.0
31.0
0.58
0.074
30.67
' " -9.85
-10.46 x : '
GE
81.0
84.0
82.0
1.53
0.222
82.33
1.34
0.72
GI
72.0
77.0
74.0
2.52
0.369
74.33
-0.40
-1.01
GL
72.0
76.0
75.0
2.08
0.295
74.33
-0.40
-1.01
GQ
81.0
85.0
85.0
2.31
0.295
83.67
1.63
1.01 -
HI
85.0
85.0
84.0
0.58
0.074
84.67
1.84
1.23
HJ
78.0
73.0
71.0
3.61
0.517
74.00
-0.47
-1.08
HK
75.0
74.0
73.0
1.00
0.148
74.00
-0.47
-1.08
HL
76.0
76.0
76.0
0.00
0.000
76.00
-0.03
-0.65
HP
78.0
79.0
84.0
3.21
0.443
80.33
0.90
0.29
HX
71.0
74.0
74.0
1.73
0.222
73.00
-0.68
-1.30
I
87.0
76.0
88.0
6.66
0.886
83.67
1.63
1.01
IC
75.0
79.0
79.0
2.31
0.295
77.67
0.33
-0.29
J
83.0
80.0
81.0
1.53
0.222
81.33
1.12
0.51
JE
73.0
74.0
76.0
1.53
0.222
74.33
-0.40
-1.01
JG
63.0
69.0
64.0
3.21
0.443
65.33
-2.34
-2.96
JI
73.0
70.0
76.0
3.00
0.443
73.00
-0.68
-1.30
JS
76.0
75.0
76.0
0.58
0.074
75.67
-0.11
-0.72
JY
664.0
614*0
660.0
27.78
6.127
646.00
123.37
122.76 x
K
66.0
64.0
64.0
1.15
0.148
64.67
-2.49
-3.10 Jl
KH
72.0
71.0
74.0
1.53
0.222
72.33
-0.83
-1.44
KL
75.0
74.0
' 75.0
0.58
0.074
74.67
-0.32
-0.94
KX
79.0
78.0
74.0
2.65
0.369
77.00
0.18
-0.43
L
84.0
83.0
86.0
1.53
0.222
84.33
1.77
1.15
LE
92.0
82.0
91.0
5.51
0.738
88.33
2.64
2.02
LF
82.0
78.0
79.0
2.08
0.295
79.67
0.76
0.14
LR
74.0
72.0
75.0
1.53
0.222
73.67
-0.54
-1.15
LT
86.0
80.0
86.0
3.46
0.443
84.00
1.70
1.08
M
70.0
68.0
71.0
1.53
0.222
69.67
-1.41
-2.02
• =
1 02
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
JI = Below control limit
-------
36139 CRD-LV Performance Evaluation: Gamma in Water,
\
9-Jun-1995
Bari urn-133
1
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
MA
.
-
ML
85.0
82.0
85.0
1.73
0.222
84.00
1.70
1.08
MP
79.0
77.0
78.0
1.00
0.148
78.00
0.40
-0.22
MQ
75.0
67.0
74.0
4.36
0.591
72.00
-0.90
-1.52
MV
88.0
88.0
89.0
0.58
0.074
88.33
2.64
2.02
MY
j'Vb-
N
77.0
82.0
80.0
2.52
0.369
79.67
0.76
0.14
NH
74.0
72.0
76.0
2.00
0.295
74.00
-0.47
-1.08
NJ
64.0
76.0
74.0
6.43
0.886
71.33
-1.05
-1.66
NK
63.0
68.0
71.0
4.04
0.591
67.33
-1.91
-2.53
NO
73.0
79.0
83.0
5.03
0.738
78.33
0.47
-0.14
NP
70.0
70.0
70.0
0.00
0.000
70.00
-1.33
-1.95
NZ
59.0
66.0
63.0
3.51
0.517
62.67
-2.92
-3.54
O
81.0
81.0
81.0
0.00
0.000
81.00
1.05
0.43
OA
79.0
74.0
77.0
2.52
0.369
76.67
0.11
-0.51
OB
•
OK
82.0
80.0
85.0
2.52
0.369
82.33
1.34
0.72
OL
70.0
82.0
66.0
8.33
1.345
72.67
-0.76
-1.37
OM
72.0
74.0
76.0
2.00
0.295
74.00
-0.47
-1.08
OZ
43.0
43.0
44.0
0.58
0.074
43.3$
-7.11
-7.72
X
P
77.0
80.0
81.0
2.08
0.295
79.33
0.69
0.07
PB
65.0
66.0
65.0
0.58
0.074
65.33
-2.34
-2.96
PE
•» A ' ""
PI
70.0
70.0
71.0
0.58
0.074
70.33
-1.26
-1.88
PM
73.0
70.0
72.0
1.53
0.222
71.67
-0.97
-1.59
PQ
62.0
66.0
65.0
2.08
0.295
64.33
-2.56
-3.18
u
PU
4
PV
63.0
76.0
67.0
6.66
0.960
68.67
-1.62
-2.24
PW
73.0
74.0
70.0
2.08
0.295
72.33
-0.83
-1.44
Q
700
69.0
74.0
2.65
0.369
71..00
-1.12
-1.73
QJ
mmm
•
QP
80.0
77.0
78.0
1.53
0.222
78.33
0.47
-0.14
QT
75.0
74.0
73.0
1.00
0.148
74.00
-0.47
-1.08
QU
85.0
86.0
84.0
1.00
0.148
85.00
1.91
1.30
QW
87.0
85.0
87.0
1.15
0.148
86.33
2.20
1.59
QX
76.0
78.0
76.0
1.15
0.148
76.67
0.11
-0.51
QZ
74.0
70.0
74.0
2.31
0.295
72.67
-0.76
-1.37
R
75.0
73.0
75.0
1.15
0.148
74.33
-0.40
-1.01
RF
71.0
74.0
71.0
1.73
0.222
72.00
-0.90
-1.52
RH
70.0
74.0
74.0
2.31
0.295
72.67
-0.76
-1.37
RL
•
RO
74.0
70.0
71.0
2.08
0.295
71.67
-0.97
-1.59
RR
67.0
74.0
68.0
3.79
0.517
69.67
-1.41
-2.02
RU
84.0
78.0
75.0
4.58
0.665
79.00
0.61
0.00
RV
83.0
87.0
78.0
4.51
0.665
82.67
1.41
0.79
• =
No data submitted
TAG SYMBOLS
1T s Above control limit
1 0 a
Insufficient data
x =
Determined to be an outlier
JJ a Below control limit
-------
((
CRD-LV Performance Evaluation
: Gamma in Water,
9-Jun-1995
^
37/39
Barium-133
-v
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
HX
• • . V
•
RZ
69.0
70.0
7o!o
0.58
0.074
69.67
-1.41
-2.02
S
76.0
79.0
77.0
1.53
0.222
77.33
0.25
-0.36
sc
73.0
72.0
72.0
0.58
0.074
72.33
-0.83
-1.44
SD
72.0
74.0
76.0
2.00
0.295
74.00
-0.47
-1.08
SF
76.0
79.0
* 85.0
4.58
0.665
80.00
0.83
0.22
SI
79.0
76.0
77.0
1.53
0.222
77.33
0.25
-0.36
SM
79.0
83.0
80.0
2.08
0.295
80.67
0.98
0.36
SN
76.0
72.0
75.0
2.08
0.295
74.33
-0.40
-1.01
SR
74.0
78.0
75.0
2.08
0.295
75.67
-0.11
-0.72
ss
83.0
78.0
81.0
J2.52
0.369
80.67
0.98
0.36
ST
>> *
'
• *
SV
80.0
79.0
79.0
0.58
0.074
79.33
0.69
0.07
SX
82.0
81.0
82.0
0.58
0.074
81.67
1.19
0.58
sz
77.0
73.0
76.0
2.08
0.295
75.33
-0.18
-0.79
T
75.0
78.0
83.0
4.04
0.591
78.67
0.54
-0.07
IB
1200
126.0
126.0
0.00 J
0.000
126.00
Wlo.fo-"
10.18
y >
TC
80.0
79.0
82.0
1.53
0.222
80.33
0.90
0.29
TD
72.0
77.0 ^ _
70.0
3.61
0.517
73.00
-0.68
-1.30
TE
r A t
< A ¦» -N
r«:
-------
(c
38/39
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Barium-133
\
T 1
Res. 1
Exper.
Rng anal
Normalized deviation
Lab
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VR
; % .
vs
83.0
83.0
79.0 2.31
0.295
81.67
1.19
0.58
VT
•
VU
W
75.0
78.0
79.01 2.08
0.295
77.33
0.25
-0.36
WD
73.0
74.0
71.0 1.53
0.222
72.67
0.76
-1.37
WF
63.0
57.0
59.0 3.06
0.443
59.67
•3.57
-4.19
WI
64.0
63.0
65.0 1.00
0.148
64.00
¦2.63
-3.25
11
WJ
87.0
85.0
82.0 2.52
0.369
84.67
1.84
1.23
WK
73.0
80.0
77.0 3.51
0.517
76.67
0.11
-0.51
X
80.0
78.0
83.0 2.52
0.369
80.33
0.90
0.29
Average
Data sorted by Laboratory Averaj
:e
Tag
Lab
Average
Tag
Lab
Average
Tag
30.67
X
FZ
72.00
MQ
74.00
HK
43.33
X
OZ
72.00
DH
74.00
HJ
59.67
It
WF
72.00
AP
74.33
SN
62.67
Ji
TS
72.33
SC
74.33
R
62.67
U
NZ
72.33
PW
74.33
JE
64.00
U
WI
72.33
KH
74.33
GL
64.33
U
PQ
72.33
AI
74.33
GI
64.67
u
K
72.67
WD
74.33
D
65.33
PB
72.67
VH
74.33
CS
65.33
JG
72.67
RH
74.33
CJ
65.67
UN
72.67
QZ
74.33
AK
66.67
TO
72.67
OL
74.67
KL
67.33
NK
73.00
TD
74.67
DE
68.67
PV
73.00
JI
74.67
BH
69.00
CK
73.00
HX
75.00
UY
69.33
BC
73.00
EW
75.00
FU
69.67
RZ
73.00
AY
75.00
E
69.67
RR
73.00
AW
75.33
VC
69.67
M
73.00
AH
75.33
sz
70.00
NP
73.33
VI
75.67
uw
70.33
PI
73.33
TL
75.67
u
70.67
CC
73.33
TH
75.67
SR
71.00
VG
73.33
CX
75.67
JS
71.00
Q
73.67
TR
75.67
CO
71.00
A
73.67
LR
76.00
HL
71.33
NJ
73.67
BB
76.00
DG
71.67
RO
74.00
TQ
76.00
BL
71.67
PM
74.00
SD
76.33
DT
71.67
EX
74.00
QT
76.67
WK
71.67
EB
74.00
OM
76.67
QX
72.00
RF
74.00
NH
76.67
OA
• s No data submitted
TAG SYMBOLS
ft
s Above control limit
0 = Insufficient data
x = Determined to be an outlier
U
= Below control limit
SJ
-------
Barium-133
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
39/39
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
76.67
DM
80.00
SF
82.33
GE
77.00
UE
80.00
CQ
82.67
RV
77.00
KX
80.00
CM
82.67
AZ
77.00
FJ
80.00
BK
82.67
AN
77.00
AU
80.00
AL
83.33
CE
77.33
W
80.33
X
83.67
TI
77.33
SI
80.33
vo
83.67
I
77.33
S
80.33
TC
83.67
GQ
77.67
IC
80.33
HP
83.67
C
77.67
BO
80.67
SS
83.67
AE
78.00
MP
80.67
SM
84.00
VA
78.00
AJ
80.67
FL
84.00
ML
78.33
QP
80.67
DL
84.00
LT
78.33
NO
80.67
CA
84.00
DZ
78.67
T
80.67
AF
84.33
L
78.67
EL
81.00
O
84.67
WJ
78.67
BA
81.00
DO
84.67
HI
79.00
RU
81.00
CP
85.00
QU
79.00
EZ
81.33
J
85.67
-
UR
79.33
VM
81.33
DD
86.33
QW
79.33
SV
81.67
vs
87.33
BG
79.33
P
81.67
UP
88.33
MV
79.67
N
81.67
SX
88.33
LE
79.67
LF
82.00
BM
103.00
X
BI
79.67
EA
82.33
OK
126.00
646.00
X
X
TB
JY
% responding labs Frequency distribution
0- ah 1 "-i—¦ T —i , , pta
-6 -4 -2 0 +2 +4
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
ilft-tmjiil.
o'-, j ---j
-6 -4 -2 0 +2 +4 *6
Normalized deviation of the mean from the grand average
• 3 No data submitted TAG SYMBOLS It s Above control limit
0 s Insufficient data x = Determined to be an outlier U s Below control limit
-------
United Slates Office of Research and EPA 600/R-95/137
Environmental Protection Development August 1995
Agency Washington, DC 20460
Uranium-Radium in
Water Performance
Evaluation Study
A Statistical Evaluation of
the June 16,1995 Data
RECEIVED
AU6 28S96
EMSL LV LIBRARY
0593RS099 OOV-137
-------
Uranium-Radium in Water
Performance Evaluation Study
June 16, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Radiation Sciences Branch (CRD-LV)
Performance Evaluation Study for Uranium-Radium in Water; June 16,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely, ^ *
George Dilbeck
Chemist
Radioanalysis Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency
It has been subject to the Agency's review
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 1/20
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useftd for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-60Q/4-81-004], available from George Dilbeck, CRD-LV, 702/798-2104.
-------
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 3/20
Uranium (Natural) Statistical Summary 149 Participants
The known value of this nuclide is 15.2 pCi/1 with an expected precision of 3.0; the control limits
are 10.0 to 20.4; the warning regions are 10.0 to 11.7 and 18.7 to 20.4
-\
27(18.1 %) Failed to respond *%
• 113(75.8 %) Within all limits
f
/
/
• X.N.
: \K
XK
* N TSw
3(2.0 %) In warning zone
6(4.0 %) Outliers '
i r
i i
but within control
Statistic
Respondents
Non-outliers
Mean
15.59
Grand Avg 14.62
Std. Dev.
9.80
1.37
Variance
96.00
1.88
% Coef. of Var.
62.86
9.39
% deviation of mean from known value
2.55
-3.81
Norm. dev. of mean from known value
0.04
-0.42
Median
14.63
14.60
% deviation of median from known value
-3.73
-3.95
Norm. dev. of median from known value
-0.06
-0.44
7(5.7 %) More than 3 norm. S.D.
3(2.5 %) Between 2 and 3 norm. S.D.
MOTtaN
•„
f - * 'n's W-I"<
'V
ft*"
I
. 93(76.2 %) Within 1 norm. S.D.
of known value
• 19(15.6 %) Between 1 and 2 norm. S.D.
-------
ft
—s
4/20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
Uranium (Natural)
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
14.7
15.1
15.0
0.21
0.079
14.93
0.18
-0.15
AE
15.6
15.2
15.9
0.35
0.138
15.57
0.55
0.21
AF
16.7
16.1
15.9
0.42
0.158
16.23
0.93
0.60
AH
14.0
13.9
14.3
0.21
0.079
14.07
-0.32
-0.65
AI
Willi®
- •
AJ
11.4
14.2
12.8
1.40
0.551
12.80
-1.05
-1.39
AK
14.4
13.5
13.0
0.71
0.276
13.63
-0.57
-0.90
AL
10.5
14.2
12.9
1.88
0.728
12.53
-1.21
-1.54
AP
18.3
18.2
18.3
0.06
0.020
18.27
2.11
1.77
AR
12.2
12.9
12.6
0.35
0.138
12.57
-1.19
-1.52
AU
* ~ \
•
AW
14.4
14.3
14.6
0.15
0.059
14.43
-0.11
-0.44
AZ
15.7
15.3
15.1
0.31
0.118
15.37
0.43
0.10
BA
15.6
14.8
14.1
0.75
0.295
14.83
0.12
-0.21
BC
14.4
13.4
14.4
0.58
0.197
14.07
-0.32
-0.65
BG
16.3
10.2
19.0
4.51
2.395
15.17
0.32
-0.02
BG
15.4
15.0
15.7
0.35
0.138
15.37
0.43
0.10
BG
12.4
13.2
13.1
0.44
0.158
12.90
-0.99
-1.33
BH
14.0
15.0
15.0
0.58
0.197
14.67
0.03
-0.31
BK
14.4
14.7
14.4
0.17
0.059
14.50
-0.07
-0.40
BM
14.4
14.1
14.6
0.25
0.098
14.37
-0.15
-0.48
BN
10.6
12.8
13.3
1.44
0.532
12.23
-1.38
-1.71
BO
16.2
15.4
14.5
0.85
0.335
15.37
0.43
0.10
C
13.4
13.1
16.1
1.65
0.591
14.20
-0.24
-0.58
CA
13.7
14.3
13.8
0.32
0.118
13.93
-0.40
-0.73
CE
15.9
16.1
16.1
0.12
0.039
16.03
0.82
0.48
CG
11.5
12.0
12.0
0.29
0.098
11.83
-1.61
-1.94
CJ
14.0
15.0
15.0
0.58
0.197
14.67
0.03
-0.31
CK
17.5
17.9
17.4
0.26
0.098
17.60
1.72
1.39
CM
14.2
14.7
15.0
0.40
0.158
14.63
0.01
-0.33
CS
16.1
15.6
15.5
0.32
0.118
15.73
0.64
0.31
CX
17.4
16.2
16.8
0.60
0.236
16.80
1.26
0.92
D
15.0
15.5
14.9
0.32
0.118
15.13
0.30
-0.04
DB
10.4
12-1 -
11.6
0.87
0.335
11.37
-1.88
-2.21
DE
19.0
19.1
19.1
0.06
0.020
19.07
2.57
2.23
DI
15.0
14.6
15.5
0.45
0.177
15.03
0.24
-0.10
DO
15.4
14.8
15.1
0.30
0.118
15.10
0.28
-0.06
DT
14.5
13.9
15.7
0.92
0.354
14.70
0.05
-0.29
DZ
15.9
14.2
14.7
0.87
0.335
14.93
0.18
-0.15
E
13.8
13.4
13.6
0.20
0.079
13.60
-0.59
-0.92
EB
15.4
15.9
15.8
0.26
0.098
15.70
0.62
0.29
EO
0.1
1.0
0.1
0.52
0.177
•
4.21
*8.54 x
BP
.••. ' . '• .Jv ' •
%
ER
12.4
13.9
14.4
1.04
0.394
13.57
-0.61
-0.94
FJ
12.5
12.2
13.2
0.51
0.197
12.63
-1.15
-1.48
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 =
**
Insufficient data
X 3
Determined to be an outlier
II 3 Below control limit
/J
-------
/?
^
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 5/20
Uranium (Natural)
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
FN
14.1
13.9
14.6
0.36
0.138
14.20
-0.24
-0.58
FZ
14.1
15.8
14.3
0.93
0.335
14.73
0.07
-0.27
GN
14.1
14.2
14.0
0.10
0.039
14.10
-0.30
-0.64
GQ
15.0
14.9
14.1
0.49
0.177
14.67
0.03
-0.31
HK
15.9
15.4
16.1
0.36
0.138
15.80
0.68
0.35
HL
13.3
13.9
13.7
0.31
0.118
13.63
-0.57
-0.90
HP
12.8
12.6
12.7
0.10
0.039
12.70
-1.11
-1.44
I
14.9
15.2
15.4
0.25
0.098
15.17
0.32
-0.02
ID
16.7
16.4
15.9
0.40
0.158
16.33
0.99
0.65
J
14.8
15.2
14.6
0.31
0.118
14.87
0.14
-0.19
JG
14.9
14.3
136
0.65
0.256
14.27
-0.20
-0.54
JG
"r ^ * J" *•" ?
JK
14.9
14.0
15.0
0.55
0.197
14.63
0.01
-0.33
JP
14.5
15.0
15.5
0.50
0.197
15.00
0.22
-0.12
JS
13.2
13 ®
13.6
0.31
0.1 is
13.53
-0.63
-0.96
JX
.. .-*¦-* <-
. f *
WfiSPiifiir
»r ^*r =s.a->-> *+¦<
JY
14.5
14.5
13.9
0.35
0.118
14!30
-0.19 ""
-0.52™
K
18.9
18.5
16.5
1.29
0.473
17.97
1.93
1.60
KH
14.6
14.6
14.8
0.12
0.039
14.67
_ 0.03 _
-0.31
KL
'v
* v \ ,
iSKSPi
¦t ¦
1IS8ISH
L
14.3
14.3
14.9
0.35
0.118
14.50
-0.07
-0.40
LH
17.0
16.0
17.0
0.58
0.197
16.67
1.18
0.85
LT
14.8
16.7
16.0
0.96
0.374
15.83
0.70
0.37
LZ
15.5
15.8
155
017
0.059
15.60
0.57
0.23
M
•V;-.'
-
s», v- A A
MX
;y>\ ^
- •• « ' >\ ' A
|g
MY
' ' *• *
lilillll!
-1,:: ¦: ¦: ^
N
14.6
14.4
14.3
0.15
0.059
14.43
-0.11
-0.44
NA
16.3
16.9
16.4
0.32
0.118
16.53
1.10
0.77
NH
14.7
14.1
14.5
0.31
0.118
14.43
-0.11
-0.44
NJ
14.0
14.0
14.0
0.00
0.000
14.00
-0.36
-0.69
NK
14.1
15.4
13.8
0.85
0.315
14.43
-0.11
-0.44
NO
14.7
14.9
15.4
0.36
0.138
15.00
0.22
-0.12
NT
15.4
15.4
15.5
0.06
0.020
15.43
0.47
0.13
OB
14.8
15-9
14.9
°-10
A039
14.90
0.16
. :9-ll
OF
. ^ ''v^'
V,;'
V' " S *'
iiilliiii
• V" v-'V" - 1
OS
13.9
13.5
14.6
0.56
0.217
.14.00
0.36
-0.69
OX
* > < ••
: ••••
OY
12.4
12.9
12.6
0 25
0.098
12*63
-1.15
-1.48
OZ
- s- *
20.8
' 2L2V
~ v><-
21.0
02a*
0.079
21.00
3.68 3,35^ x
P
14.1
14.9
14.3
0.42
0.158
14.43
-0.11
-0.44
PB
16.8
170
16.8
0.12
0.039
_ 16.87^
1.30
0.96
PG
v.
x * •*> •?
,w,'. .••a'HCW(,.^v>.v.,A S/. .v. Xv. I'.v/.. .
PQ
14.4
14.6
14.7
0.15
0.059
14.57
-0.03
-0.37
PV
15.1
15.3
15.7
0.31
0.118
15.37
0.43
0.10
• 3
No data submitted
TAG SYMBOLS
ft s Above control limit
I®.
Insufficient data
X 3
Determined to be an outlier
JJ a Below control limit
-------
ft
6/20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
Uranium (Natural)
1
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
PW
12.4
15.1
12.0
1.69
0.610
13.17
-0.84
-1.17
Q
15.0
15.5
16.6
0.82
0.315
15.70
0.62
0.29
QJ
17.0
15.0
14.0
1.53
0.591
15.33
0.41
0.08
QQ
14.8
14.2
15.5
0.65
0.256
14.83
0.12
-0.21
QU
7.3
11.5
11.2
2.34
0.827
10.00
•2.67
-3.00
qx
10.2
10.0
9.0
0.64
0.236
9.73
•2.82
QZ
14.8
129
15.7
1.43
0.551
14.41
-0.09
-0.42
¦ R
ilBIBi®
RD
13.2
13.2
13.2
0.00
0.000
13.20
-0.82
-1.15
RF
14.3
15.1
14.6
0.40
0.158
14.67
0.03
-0.31
RG
14.8
14.7
14.5
0.15
0.059
14.67
0.03
-0.31
RK
13.9
13.9
13.4
0.29
0.098
13.73
-0.51
.. - "? 85,
RL
¦¦Ssp;
^ 's -
'?¦ y
RP
14.7
13.8
14.4
0.46
0.177
14.30
-0.19
-0.52
RR
15.7
15.8
14.6
0.67
0.236
15.37
0.43
0.10
RV
14.2
14.4
14.0
0.20
0.079
14.20
-0.24
-0.58
RW
13.9
13.6
13.5
0.21
0079
13.67
-0.55
-0.89
RX
„ ' ' f'' _ \\ t'
RZ
12.5
14.4
16.0
1.75
0.689
14.30
-0.19
-0.52
S
15.0
13.5
13.4
0.90
0.315
13.97
-0.38
-0.71
sc
14.7
14.4
14.6
0.15
0.059
14.57
-0.03
-0.37
SD
13.1
13.1
13.4
0.17
0.059
13.20
-0.82
-1.15
SF
13.8
14.1
13.9
0.15
0.059
13.93
-0.40
-0.73
SI
14.3
14.9
14.5
0.31
0.118
14.57
-0.03
-0.37
SL
13.5
14.4
13.9
0.45
0.177
13,93
-0.40
-0.73
SM
15.8
17.5
17.5
0.98
0.335
16.93
1.34
1.00
SO
14.6
13.8
14.2
0.40
0.158
14.20
-0.24
-0.58
ss
14.5
15.5
16.5
1.00
0.394
15.50
0.51
0.17
ST
27.7
28.3
28.3
0.35
0.113
28.10
7.78
. 7A5 - ] x ;
SX
SSIfffSSK
§§§p^-m':.
; -
sz
12.9
13.4
12.7
0.36
0.138
13.00
-0.94
-1.27
T
16.9
16.6
15.0
1.02
0.374
16.17
0.89
0.56
TD
16.3
15.7
18.0
1.19
0.453
16.67
1.18
_ 0.85
TE
x**4v'' ' • + r
TH
16.2
14.1
14.5
1.12
0.413
14.93
0.18
-0.15
TI
14.6
15.3
13.8
0.75
0.295
14.57
-0.03
-0.37
TL
15.7
16.1
16.9
0.61
0.236
16.23
0.93
0.60
TN
... • '•: '"'-i "V 'ii?' ' ''y'
?!«*" C' " ; , •
vyX£.y$iii;
*
TQ
*
TS
13.5
14.2
14.0
0.36
0.138
13.90
-0.42
-0.75
U
15.6
15.9
15.9
0.17
0.059
15.80
0.68
0.35
UE
SlillSlllil
SiiaillU!
e&s- ¦ i" "• . '< ^
UN
13.1
13.4
13.6
0.25
0.098
13.37
-0.72
-1.06
UP
14.0
154
16.0
1.03
0.394
1513
0.30
-0.04
UQ
y?*
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
IU-
Insufficient data
X S
Determined to be an outlier
JJ = Below control limit J
¦y
-------
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 7/20
Uranium (Natural)
Lab
Res. 1
Res. 2
UW
uz
VA
VG
VH
VI
VT
W
W
WC
WG
WH
WI
X
11.8
118.0:
14.2
26.4
15.9
15.8
13.2
13.2
11.2
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
0.197
12.2
0.50 0.197 _ -167 -2.00
^ ' •"/ ^ % V> A , -*v y ^ , V ' ' 's ;U - sO''' '<¦ v • v
115.9 - ; 3.76- '• '• L833 119.03 59 95 x
14.30
0.098
iBiittlli
0.059
0.315
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
0.40
X
EO
13.90
TS
14.57
TI
9.73
X
ox
13.93
SL
14.57
SI
10.00
QU
13.93
SF
14.57
sc
11.37
DB
13.93
CA
14.57
PQ
11.73
UW
13.97
S
14.63
JK
11.83
CG
14.00
OS
14.63
CM
12.23
BN
14.00
NJ
14.67
RG
12.53
AL
14.07
BC
14.67
RF
12.57
AR
14.07
AH
14.67
KH
12.63
OY
14.10
GN
14.67
GQ
12.63
FJ
14.20
RV
14.67
CJ
12.70
HP
14.20
SO
14.67
BH
12.80
AJ
14.20
FN
14.70
DT
12.90
BG
14.20
C
14.73
FZ
13.00
SZ
14.27
JE
14.83
QQ
13.17
PW
14.30
VG
14.83
BA
13.20
RD
14.30
RZ
14.87
J
13.20
SD
14.30
RP
14.90
OB
13.23
WI
14.30
JY
14.93
DZ
13.37
UN
14.37
BM
14.93
A
13.53
JS
14.43
P
14.93
TH
13.57
ER
14.43
NK
15.00
NO
13.60
X
14.43
NH
15.00
JP
13.60
E
14.43
N
15.03
DI
13.63
HL
14.43
AW
15.10
DO
13.63
AK
14.47
QZ
15.13
UP
13.67
RW
14.50
L
15.13
D
13.73
RK
14.50
BK
15.17
I
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ir
= Above control limit
a Below control limit
-------
8/20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
I
f ¦ i -- . ' - —
Uranium (Natural)
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
15.17
BG
15.60
LZ
16.67
TD
15.23
WH
15.70
EB
16.67
LH
15.33
QJ
15.70
Q
16.80
CX
15.37
BG
15.73
CS
16.87
PB
15.37
RR
15.80
U
16.93
SM
15.37
PV
15.80
HK
17.60
CK
15.37
BO
15.83
LT
17.97
K
15.37
AZ
16.03
CE
18.27
AP
15.40
W
16.17
T
19.07
DE
15.43
NT
16.23
TL
21.00
X
OZ
15.50
SS
16.23
AF
27.40
X
VI
15.57
AE
16.33
ID
28.10
X
ST
16.53
NA
119.03
X
VA
% responding labs
Frequency distribution
10-
responding labs
-2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
104
0
¦-liiilijpihji-
-T- ~ —
-4 -2 6 ' +2 +4
Normalized deviation of the mean from the grand average
•6
0
= No data submitted
= Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
IT 3 Above control limit
II 3 Below control limit
-------
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 9/20
Radium-226 Statistical Summary 147 Participants
The known value of this nuclide is 14.8 pCi/1 with an expected precision of 2.2; the control limits
are 11.0 to 18.6; the warning regions are 11.0 to 12.3 and 17.3 to 18.6
37(25.2 %) Failed to respond >(
. 84(57.1 %) Within all limits
3(2.0 %) Outliers '
22( 15.0 %) Out of control "
but not an outlier ^
|
Statistic
si
jyfyS*
11
Respondents
•— 1 (0.7 %) In warning zone
but within control
Non-outliers
Mean
15.25
Grand Avg 14.32
Std. Dev.
6.93
2.44
Variance
48.07
5.97
% Coef. of Var.
45.47
17.07
% deviation of mean from known value
3.02
-3.28
Norm. dev. of mean from known value
0.06
-0.20
Median
14.38
14.37
% deviation of median from known value
-2.82
-2.93
Norm. dev. of median from known value
-0.06
-0.18
25(22.7 %) More than 3 norm. S.D. •
1 (0.9 %) Between 2 and 3 norm. S.D. •
m
>v>y%z>
a
.61(55.5 %) Within 1 norm. S.D.
S of known value
23(20.9 %) Between 1 and 2 norm. S.D.
-------
((
^
10/20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
Radium-226
N
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tog
A
14.6
13.1
14.8
0.93
0.456
14.17
-0.12
-0.50
AE
14.5
14.7
14.9
0.20
0.107
14.70
0.30
-0.08
AF
13.3
13.7
13.2
0.26
0.134
13.40
-0.72
-1.10
AH
14.3
14 9
13.4
0.75
0.403
14.20
-0.°9
-0.47
AI
IlllllSI
•
AJ
13.3
13.4
14.2
0.49
0.242
13.63
-0.54
-0.92
AK
12.6
13.3
12.8
0.36
0.188
12.90
-1.11
-1.50
AL
13.5
13.4
14.3
0.49
0.242
13.73
-0.46
-0.84
AP
14.1
13.9
14.9
0.53
0.268
14.30
-0.01
-0.39
AR
|1IM1|I11|
AU
13.5
13.1
13.9
0.40
0.215
13.50
-0.64
-1.02
AW
13.3
13.6
13.0
0.30
0.161
13.30
-0.80
-1.18
AZ
13.7
17.3
14.7
1.86
0.967
15.23
0.72
0.34
BA
13.6
13.7
14.0
0.21
0.107
13.77
-0.43
-0.81
BC
11.1
10.5
11.0
0.32
0.161
10.87
-2.72
-3.10
BO
91.0
71.0
66.0
13.23
11.880
76.00
Ar, „
48.56
48.18
BH
14.5
14.6
13.3
0.72
0.349
14.13
-0.14
-0.52
BK
14.5
14.1
14.6
0.26
0.134
14.40
0.07
-0.31
BM
15.2
11.8
12.7
1.76
0.913
13.23
-0.85
-1.23
BN
19.9
19.8
20.8
0.55
0.268
20.17
4.61
4.23
It
BO
14.0
14.2
14.0
0.12
0.054
14.07
-0.20
-0.58
C
15.7
15.0
14.2
0.75
0.403
14.97
0.51
0.13
CA
14.8
14.9
14.3
0.32
0.161
14.67
0.28
-0.10
CE
11.8
13.1
14.2
1.20
0.644
13.03
-1.01
-1.39
CG
15.9
17.8
15.8
1.13
0.537
16.50
1.72
1.34
CJ
15.0
15.0
15.0
0.00
0.000
15.00
0.54
0.16
CK
12.8
13.0
12.8
0.12
0.054
12.87
-1.14
-1.52
CM
•j. • • •' .
cs
17.7
156
16.2
1.08
0.564
16.50
1.72
1.34
cx
•V7"'
D
liiiilisaiiii
ignu
•
DB
13.4
12.6
12.6
0.46
0.215
12.87
-1.14
-1.52
DE
146
14.6
14.6
o.oo
0.000
14.60
0.22
-0.16
DI
V " » ' f
/ ' ¦¦ *'
• ^
DO
'' '' * ' <'»v-
i, ,-;;£
;'f*
DT
14.2
14.9
14.0
0.47
0.242
14.37
0.04
-0.34
DZ
14.4
14.5
14.2
0.15
0.081
14.37
0.04
-0.34
E
13.1
14.0
14.0
0.52
0.242
13.70
-0.48
-0.87
EB
13.7
14.1
15.3
0.83
0.430
14.37
0.04
-0.34
EO
14.8
15.2
15.3
0.26
0.134
15.10
0.62
0.24
EP
13.9
13.8
13.4
0.26
0.134
13.70
-0.48
-0.87
ER
14.5
15.0
14.9
0.26
0,134 ^
14.80
0.38
0.00
FJ
8|lifl!f|p
, V' '
WBIII
¦ i ->
FN
18.8
20.0
20.8
1.01
0.537
19.87
4.37
3.99
V
FZ
19.0
18.4
23.1
2.56
1.499
20.17
4.61
4.23
ft
• =
No data submitted
TAG SYMBOLS
1? s Above control limit
hi
8
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
*y
-------
__
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 11 / 20
Radium-226
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
GN
14.4
15.2
14.1
0.57
0.295
14.57
0.20
-0.18
GQ
14.0
14.9
13.2
0.85
0.456
14.03
-0.22
-0.60
HK
15.0
14.9
14.9
0.06
0.027
• 14.93
0.49
0.10
HL
14.8
14.2
15.9
0.86
0.456
14.97
0.51
0.13
HP
15.6
16.2
18.1
1.31
0.671
16.63
1.83
1.44
I
20.3
17.0
14.2
3.05
2.215
17.17
2.24
1.86
ID
13.0
15.1
12.7
1.31
0.644
13.60
-0.56
-0.94
J
13.2
15.0
14.7
0.96
0.483
14.30
-0.01
-0.39
J IS
16.9
16.5
15.8
0.56
0.295
16.40
1.64
1.26
JG
9.1
9.5
13.2
2.26
1.192
10.60
-2.93
-3.31 U
JK
fplpllll
1PPMMI
mmwmsm
JP
i ( tj, JVV'' '
Sfrrifi%£:CCf<' &
' ^ « V. "
V • .&<• >• ¦ J. r • AJ-r •'.
0*c-
JS
12.9
17.8 '
20.4
3.81
2.931
17.03
2.14
1.76
JX
15.6
15.2
15.4
0.20
0.107
15.40
0.85
0.47
JY
K
13.5
16.4
11.9 _
2.28
1.397
WSWSXIWWSi
.13.93
-0.30
-0.68
KH
14.6
14.2
14.8
0.31
0.161
14.53
0.17
'''l
-0.21
KL
13.6
16.0
14.1
1.27
0.644
14.57
0.20
-0.18
L
13.4
12.3^
12.9
0.42
0.21.5
12.77
-1.22
-1.60
LH
- -\ V^V cW« <
>, *
LT
9.6
9.8
11.6
1.10
0.537
10.33
-3.13
-3.52 U
LZ
14.5
14.5
14.5
0.00
0.000
14.50
0.15
-0.24
M
15:1
17.9
14.9
1.57
0.805
16.13
1.43
1.05
MX
"* •• V.s
fSM
A • s.
MY
s\%x*
/ <% 5, * ^a< * *' * / -
" "fK : fclv ."J™
N
144
14.4
14.2
0.12
0.054
14.33
0.01
J)^lK
NA
^ ¦r&rs'
iisfiisiftiif
•.s " A ¦¦ - w o vN
>
/ 7' / ' , v
NO
15.6
15.8
16.2
0.31
0.161
15.87
1.22
0.84
NT
14.5
14.7
14.6
0.10
0.054
14.60
0.22
-0.16
OB
16.5
15.5
15.7
0.53
0.268
15.90
1.25
0.87
OF
7.8
7.8
8.9
0.64
0.295
8.17
-4.84
-5.22 U
OS
ligllliMpitt
^l£*i£&XitXi8Si
IHlSlflfllillt
IlliillliilpS
>,/ '- '
OX
14.9
14.8
15.0
0.10
0.054
14.90
0.46
0.08
OY
11.7
10.6_.__
10.0
0.86
0.456
10.77
-2.79
-3.18 U
OZ
y/; ¦ * ¦ V*
. *••>..•<• ^w;. if. a-
igp^*
f < /
taMll
iranBpMnmM
";rli
P
19.9
*17.5
19.4
1.27
0.644
18.93
3.64
3.25 IT
PB
14.5
14.2
15.0
0.40
0.215
14.57
0.20
-0.18
¦ PG"
/ ..•"¦"•Vs.
fS * - **,& •*
^ 1W-' WV/ v <*"„ <* s VV- -/
ippapifs
PQ
8.9
9.3
10.2
0.67
0.349
9.47
-3.82
-4.20 U
PV
9.5
11.4
11.6
1.16
0.564
10.83
-2.74
-3.12 ^
PW
15.2
17.2
15.3
1.13
0.537
15.90
1.25
0.87
Q
14.3
15.7
16.3
1.03
0.537
15.43
0.88
0.50
• =
No data submitted
TAG SYMBOLS
tT s Above control limit
0 =
VJ.
Insufficient data
X 5
Determined to be an outlier
JJ- = Below control limit
-------
,
12/20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jwn-1995
Radium-226
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
QJ
10.0
14.0
14.0
2.31
1.141
12.67
-1.30
-1.68
QQ
17.1
17.1
16.3
0.46
0.215
16.83
1.98
1.60
QU
9.5
12.4
10.8
1.45
0.779
10.90
-2.69
-3.07 U
QX
8.1
8.0
8.5
0.26
0.134
8.20
-4.81
-5.20 U
QZ
14.3
14.7
15.1
0.40
0.215
14.70
0.30
-0.08
R
13.7
14.2
13.4
0.40
0.215
13.77
-0.43
-0.81
RD
14.2
14.0
13.7
0.25
0.134
13.97
-0.27
-0.66
RF
15.4
16.4
15.3
0.61
0.295
15.70
1.09
0.71
RG
_ • V. • ,•
Igilgliipi:
Vv^ ;¦'« -V
RK
15.3
18.8
14.7
2.21
1.192
16.27
1.54
1.15
ML
|§|
iiipsfa
1P1IB
«»«»»?
• w •• ,.[ :Vj/." _ >( "V t; .>(
HP
lllfelllllll
¦
•
RR
liliiailili;:
•
RV
9.5
9.8
10.8
0.68
0.349
10.03
-3.37
-3.75 il
RW
15.3
„ 15? _
14.6
0.60
0.322
15.23
0.72
0.34
RX
ttfiSfiSIIS
^ ' v-> '^y X1*' - vs ^ "• yr
RZ
15.1
15.0
16.0
0.55
0.268
15.37
0.83
0.45
S
14.9
14.7
14.5
0.20
0.107
14.70
0.30
-0.08
sc
17.5
15.6
16.9
0.97
0.510
16.67
1.85
1.47
SD
12.5
11.7
11.8
0.44
0.215
12.00
-1.82
-2.20
SF
13.1
14.7
14.6
0.90
0.430
14.13
-0.14
-0.52
SI
8.6
10.0
8.2
0.95
0.483
8.93
-4.24
-4.62 ^ }
SL
jSi-KSji
SM
9.4
12.0
9.8
1.40
0.698
10.40
-3.08
-3.46 Y
SO
10.2
10.6
11.0
0.40
0.215
10.60
-2.93
-3.31 H
ss
12.9
13.6
14.9
1.01
0.537
l3-80
-0.41
-0.79
ST
29^2
28.7
29.2
0.29
0.134
AA A„
29.03
sx
;;£#:£i£ip
s < ' >' ' '*¦•.*"
sz
16.1
14.1
15.3
1.01
0.537
15.17
0.67
0.29
T
14.7
14.8
15-3
0.32
0.161
14.93
0.49
0.10
TD
21.1
23.5
21.4
1.31
0.644
22.00
6.05
5.67 IT
TE
. . -tj,vv
liiraiilS
Sii*||
V-- *.A-
'
TH
16.1
15.8
15.9
0.15
0.081
15.93
1.27
0.89
TI
14.1
13.2
14.0
0.49
0.242
18.77
-0.43
•°-81
TL
HMMI
^I^PvSllK
TN
141
13.4
15.2
0.91
0.483
14.23
-0.06
-0.45
TQ
TS
;V"
t*p-W
"ix $•¦•?..¦< ^ •' *¦ < ¦
>i£.£ .S-x" £• •
JlllllSilliti
Iflpi^tt
•
U
13.6
14.8
14.6
IjHM
0.322
14.33 0.01
-0.37
UE
V-'V- ¦ 'iV;
ne^ii
VMiMMISrM
UN
10.2
10.7
10.4
0.25
0.134
10.43
-3.06
-3.44 I
UP
19.5
19.7
19.3
0.20
0.107
19.50
4.08
3.70 It
UQ
15.6
14.9
14.9
0.40
0.188
15.13
0.64
0.26
uw
13.4
13.9
12.2
0.87
0.456
13.17
-0.90
-L29
uz
> A* *
" •
• =
No data submitted
TAG SYMBOLS
fl = Above control limit
[a.
Insufficient data
x = Determined to be an outlier
U 3 Below control limit
-------
f/
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 13 / 20
Radium-226
¦
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg)
(known) Tag
VA
40*5
43.0
37.7 2.65
1.806 >
-S;^40.4o
20.64
£2fcl5~
-x .
VG
V''
">• ^ ^
•.f' ' J -
5 /, ' - S
illiilili
ISfSt
IM#
flUM
giiiiae
•
VH
12.6
11.8
12.9 0.57
0.295
12.43
-1.48
-1.86
VI
15.0
16.1
15.6 0.55
0.295
15.57
0.99
0.60
VT
12.0
8.6
10.3 1.70
0.913
10.30
-3.16
-3.54
.X
W
, V '
lit
\v- '<
jBWB
SHIPS*
W
14.0
14.1
15.4 0.78
0.376
14.50
0.15
-0.24
wc
24.1
17.4
17.6 3.81
2.522
19.70
4.24
3.86
it
WG
T ,*
111?
" v*1
"V • *..
WH
V.;;:v5
: ' "
fill;
V v J.f ¦¦ ,
• _
WI
>
I3K
- - S
. - ' .',f-
* '>s - "
• :
X
13.9
14.5
14.4 0.32
0.161
14.27
-0.04
-0.42
Data sorted by Laboratory Averaf
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.17
OF
13.70
EP
14.57
KL
8.20
ox
13.70
E
14.57
GN
8.93
SI
13.73
AL
14.60
NT
9.47
U
PQ
13.77
TI
14.60
DE
10.03
Ji
RV
13.77
R
14.67
CA
10.30
11
VT
13.77
BA
14.70
S
10.33
U
LT
13.80
SS
14.70
AE
10.40
U
SM
13.93
JY
14.70
QZ
10.43
U
UN
13.97
RD
14.80
ER
10.60
U
SO
13.97
NH
14.90
OX
10.60
u
JG
14.03
GQ
14.93
T
10.77
u
OY
14.07
BO
14.93
HK
10.83
PV
14.13
SF
14.97
HL
10.87
u
BC
14.13
BH
14.97
C
10.90
u
QU
14.17
A
15.00
CJ
12.00
SD
14.20
AH
15.10
EO
12.43
VH
14.23
TN
15.13
UQ
12.67
QJ
14.27
X
15.17
sz
12.77
L
14.30
J
15.23
RW
12.87
DB
14.30
AP
15.23
AZ
12.87
CK
14.33
U
15.37
RZ
12.90
AK
14.33
N
15.40
JX
13.03
CE
14.37
DZ
15.43
Q
13.17
UW
14.37
DT
15.57
VI
13.23
BM
14.37
EB
15.70
RF
13.30
AW
14.40
BK
15.87
NO
13.40
AF
14.50
W
15.90
PW
13.50
AU
14.50
LZ
15.90
OB
13.60
ID
14.53
KH
15.93
TH
13.63
AJ
14.57
PB
16.13
M
• = No data submitted
TAG SYMBOLS
ft 3 Above control limit
0 - Insufficient data
x = Determined to be an outlier
s Below control limit
\>
V
-------
14 / 20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
16.27
RK
16.67
SC
19.87
tr
FN
16.33
NJ
16.83
QQ
20.17
tr
FZ
16.40
JE
17.03
JS
20.17
tr
BN
16.50
CG
17.17
I
22.00
tr
TD
16.50
CS
18.93
IT
p
29.03
X
ST
16.63
HP
19.50
tr
UP
40.40
X
VA
19.70
IT
wc
76.00
X
BG
responding labs
Frequency distribution
10-
A
j'lty
JbfM.
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
-T"
+6
-6
% responding labs
to-
-6
-4 | -2 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS If = Above control limit
^ = Tnw^riffnt^Hta^____^__x_s_D^e^^^^obe^n^^lier___^___£_3_^ekwco^rol^^^
-------
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 15 / 20
~— 1 i - ,¦ '"r-"". .I i
Radium-228 Statistical Summary 147 Participants
The known value of this nuclide is 15.0 pCi/1 with an expected precision of 3.8; the control limits
are 8.4 to 21.6; the warning regions are 8.4 to 10.6 and 19.4 to 21.6
44(29.9 %) Failed to respond
93(63.3 %) Within all limits
4(2.7 %) Outliers '
3(2.0 %) Out of control
but not an outlier
3(2.0 %) In warning zone
but within control
Statistic Respondents Non-outliers
Mean
15.35
Grand Avg 14.98
Std. Dev.
4.17
2.59
Variance
17.43
6.69
% Coef. of Var.
27.19
17.27
% deviation of mean from known value
2.35
-0.16
Norm. dev. of mean from known value
0.08
-0.01
Median
15.07
15.03
% deviation of median from known value
0.44
0.22
Norm. dev. of median from known value
0.02
0.01
64(62.1 %) Within 1 norm. S.D.
of known value
7(6.8 %) More than 3 norm. S.D.
3(2.9 %) Between 2 and 3 norm. S.D
-------
\
16 / 20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
Radium-228
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
16.3
15.5
13.3
1.55
0.466
15.03
0.03
0.02
AE
11.5
10.7
10.1
0.70
0.218
10.77
-1.92
-1.93
AF
15.4
15.6
14.8
0.42
0.124
15.27
0.13
0.12
AH
14.9
14.9
13.6
0.75
0.202
14.47
-0.23
-0.24
AI
13.7
13.5
14.5
0.53
0.155
13.90
-0.49
-0.50
AJ
21.1
17.2
14.5
3.32
1.049
17.60
1.20
1.19
AK
13.6
12.7
12.1
0.75
0.233
12.80
-0.99
-1.00
AL
12.4
14.8
13.1
1.23
0.373
13.43
-0.70
-0.71
AP
5.8
7.6
8.2
1.25
0.373
7.20
-3.54
-3.56 U
AR
SBBHS
pi®
WiMSlfflBK
'Yz&z*'?
AU
^SJS§1
2.1
2.5
0.23
0.062
2.23
*6.81
AW
13.5
13.7
12.7
0.53
0.155
13.30
-0.76
-0.77
AZ
15.4
16.0
15.1
0.46
0.140
15.50
0.24
0.23
BA
11.8
12.5
10.4
1.07
0.326
11.57
-1.55
-1.56
BC
19.1
16.4
18.0
1.36
0.420
17.83
1.30
1.29
BO
|ISil#|||
BH
14.9
15.6
14.8
0.44
0.124
15.10
0.06
0.05
BK
19.0
17.4
18.7
0.85
0.249
18.37
1.55
1.53
BM
14.5
16.6
14.9
M2
0.326
J5;33.
0.16
BN
3!»!l!«
BO
14.2
13.9
14.1
0.15
0.047
14.07
-0.41
-0.43
C
18.4
19.5
19.3
0.59
0.171
19.07
1.86
1.85
CA
12.2
12.4
11.2
0.64
0.187
11.93
-1.39
-1.40
CE
15.8
15.2
14.2
0.81
0.249
15.07
0.04
0.03
CG
12.3
14.5
15.1
1.47
0.435
13.97
-0.46
-0.47
CJ
14.0
14.0
14.0
0.00
0.000
14.00
-0.45
-0.46
CK
11.5
14,0
13.1
1.27
0.389
1.2.87
-0.96
-0.97
CM
ll|fp
< * >
HfH
CS
13.6
14.8
13.6
0.69
0187
14.00
-0.45
-0.46
cx
•••
W®ill
Vr ,
\ «' J'
" - -O'
A;*
D
-' ¦> % >% "¦ '* ""
#' ,,
DB
14.9
15.9
15.6
0.51
0.155
15.47
0.22
0.21
DE
17.7
17.7
17.7
0.00
0.000
17.70
1.24
1.23
DI
* . ¦'< ¦
'
DO
''Vis": ^
• ¦
DT
19.2
18.4
18.7
0.40
0.124
18.77
1.73
1.72
DZ
19.7
18.8
18.4
0.67
0.202
18.97
1.82
1.81
E
IRPSIlSfl
"X.,^ y>K <, ^ /." v^Vs
_
EB
16.6
169
16.9
0.17
0.047
16.80
083
0.82
EO
15.8
16.4
16.9
0.55
0.171
16.37
0.63
0.62
EP
13.4
14.3
14.1
0.47
0.140
13.93
-0.48
^ -0.49
ER
*{*} /O" -
FJ
<* < >¦. v. "
tj?." s
FN
15.0
. 14 g
13.8
0.60
0.187
14.43
-0.25
-0.26
FZ
16.3
19.4
14.8
2.35
0.715
16.83
0.85
0.84
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
-------
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 17/20
Radium-228
Lab
NK
NO
NT
OB
OF
OS
Res. 1
Res. 2
Res: 3
Exper.
Rng anal
+
GN
22.6
23.2
23.2
0.35
0.093
GQ
15.9
16.0
17.9
1.13
0.311
HK
15.2
13.2
13.6
1.06
0.311
HL
15.9
16.2
15.4
0:40
0.124
HP
12.0
10.4
11.7
0.85
0.249
I
15.9
15.3
14.8
0.55
0.171
ID
14.8
16.1
16.2
0.78
0.218
J
15.1
15.4
14.3
0.57
0.171
JE
20.7
19.9
19.6
0.57
0.171
JG
12.1
11.4
8.6
1.85
0.544
JK
JP
' ' * [ - "
JS
17.8
15.3
14.4
1.76
0.528
JX
11.0
11.8
12.0
0.53
0.155
JY
11.4
13.0
11.1
1.02
0.295
K. ¦
'• "Y -v, ,
..
M
14.4
14.8
15.8
0.72
0.218
MX
illfilS:
MY
¦WIlSIl
N
14.4
16.6
13.7
1.51
0.451
NA
' "/•' '
V>„, ^ %
.. .
mmmm
NH
16.4
14.5
15.2
0.96
0.295
NJ
15.0
16.0
17.0
1.00
0.311
Normalized deviation
Average (grand-avg) (known) Tag
23.00
16.60
14.00
15.83
11.37
15.33
15.70
14.93
20.07
10.70
3.66
3.65
0.74
0.73
-0.45
-0.46
0.39
0.38
-1.65
-1.66
0.16
0.15
0.33
0.32
-0.02
-0.03
2.32
2.31
-1.95
-1.96
rv * -
- ' \ .w\
||p|i|i
0.39
0.38
-1.54
-1.55
-1.43
-1.44
ft
-0.02 -0.03
1.39 1.38
1.09 1.08
-2.42
-2.41
0.01
5KV
0.00
14.90 -0.03
15.37 ~ 0.18
16.00 0.47
-0.05
'-W ,.4
15.3 15.3
0.46
16.77
Willis
{&•;$&£&SSferaSffi-fi
OX
15.2
15.3
15.0
0.15
0.047
15.17
0.09
0.08
OY
14.4
14.1
147
0.30
0.093
14.40
-0.26
-0.27
OZ
V'
P
11.7
11.4
11.3
0.21
0.062
11.47
-1.60
-1.61
PB
15.6
15.8
160
0.20
0.062
15.80
0.38
0.36
PG
BISilf
PQ
13.8
12.0
10.2
1.80
0.560
12.00
-1.36
-1.37
PV
9.1
9.7
13.1
2.16
0.622
10.63
-1.98
-1.99
PW
15.6
15.2
15.1
0.26
0.078
15.30
0.15
0.14
Q
14.3
16.1
15.8
0.96
0.280
15.40
0.19
0.18
• s
No data submitted
TAG SYMBOLS
ft a Above control limit
0 3 Insufficient data
x = Determined to be an outlier
JJ s Below control limit
-------
A
18 / 20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
Radium-228
•
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
QJ
14.0
13.0
14.0
0.58
0.155
13.67
-0.60
-0.61
QQ
- .
\ >-/^ *- .
V-J -1 ¦• '•* % •" •' •%" '•
• ......
¦;•?-¦< v:
^ - .
QU
33.4.
22.8
18.8
¦>:¦ ¦•¦ \, 7.54'
3.418
25.00 . 4.57
4.56 x
QX
11.4
12.2
12.3
0.49
0.140
11.97
-1.37
-1.38
QZ
13.7
12.6
13.4
057
o.m
13.23
-0.79
-0.81
R
*, v
; v / < • /:
0
RD
13.3
15.5
14.0
1.12
0.342
14.27
-0.32
-0.33
RF
17.8
15.4
16.9
121
0.373
16/70
0.79
0.77
RG
RK
36.1
39.2
40.6
2.30
0.699
38.03
10.78
10.77 x
RL
/?• .
llllillf
*' \
RP
";V ' ' * '
mmmmiigi
•
RR
'V
Y
" ''
% r.".. S •'!: .S ?*: -s v.;- ¦„ -.x •
»* o c >, v- i^
m
RV
15.2
14.6
14.5
0.38
0.109
14.77
-0.10
-0.11
RW
16.0
16.2
, ..If .3 ,
1.04
0.295
15.50
0.24
0.23
RX
WMSXmlm
•
RZ
15.6
147
16.8
1.05
0.326
15.70
0.33
0.32
S
12.5
12.4
13.3
0.49
0.140
12.73
-1.02
-1.03
sc
11.0
12.9
13.7
1.39
0.420
12.53
-1.11
-1.12
SD
15.5
15.1
14.9
0.31
0.093
15.17
0.09
0.08
SF
18.1
16.9
15.7
1.20
0.373
16.90
0.88
0.87
SI
17.2
17.9
17.7
0.36
0.109
17.60
1.20
1.19
SL
' -M ¦
*
SM
14.3
13.3
14.1
0.53
0155
13.90
-0.49
-o.so
SO
iiasai
* *
ss
14.1
17.9
13.4
2.42
0.699
15.13
0.07
0.06
ST
33.5
32.0
32.6
* ; 0.76
0.233
32.70
8.08
8.07 " ^ x ¦
SX
'V'/¦
*ll!il
•
sz
13.5
16.3
13.6
1.59
0.435
14.47
-0.23
-0.24
T
17.2
16.3
15.7
0.75
0.233
16.40
0.65
0.64
TD
22.3
18.6
13.8
4.26
1.612
18.23
1.48
1.47
TE
¦ '
^^¦18111
TH
17.0
15.3
18.0
1.37
0.420
16.77
0.82
0.81
TI
16.3
18.7
19.1
1.51
0.435
18.03
1.39
1.38
TL
10.2
10.9
11.8
0.80
0.249
10.97
-1.83
-1.84
TN
19.4
18.4
17.0
1.21
0.373
18.27
1.50
••• & -'Y p <
„ 149
TQ
: r.4 ^ • }y 'r?. >*.'•/ v
#
TS
""; "
Ilgtillii
§1SS||1|®
Mi
•
U
154
125
12.0
1.84
0.528
13.30
-0.76
-0.77
UE
^ '• 'V > W:+-
UN
12.6
12.7
13.5
0.49
0.140
12.93
-0.93
-0.94
UP
17.1
21.2
22.3
2.74
0.808
20.20
2.38
2.37
UQ
17.2
16.2
16.4
0.53
0.155
16.60
0.74
0.73
uw
12.6
14.2
13.6
0.81
0.249
13.47
'°-69
-0.70
uz
-V-- .. v
" * * ^
•
• =
No data submitted
TAG SYMBOLS
1T = Above control limit
0 =
^
Insufficient data
x =
Determined to be an outlier
U s Below control limit
/j
-------
((
CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995 19/20
Radium-228
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg)
(known) Tag
VA
22.8
20.7
24.3 1.81
0.560
22.60
3.47
3.46
It
VG
11.8
12.4
11.9 0.32
0.093
12.03
¦1.34
-1.35
VH
15.2
14.6
13.8 0.70
0.218
14.53
-0.20
-0.21
VI
15.4
16.3
15.9 0.45
0.140
15.87
0.41
0.40
VT
135
137
13.6 0.10
0.031
13.60
-0.63
-0.64
W
. .
" s
>>*v
W
16.1
14.7
16.6 0.98
0.295
15.80
0.36
WC
K'Slilt
lili
lllgll
•
WQ
-'v. Y>
-\' 0 ,
-H- ¦*<;¦ -y
iligji
;¦* -
0
wr-;/ -
llllll!
iiiii
m
X
13.9
12.5
15.8 1.66
0.513
14.07
-0^41
-0.43
Data sorted by Laboratory Averaj
fe
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.23
X
AU
13.90
AE
15.37
NH
7.20
AP
13.93
EP
15.40
Q
9.70
LT
13.97
CG
15.47
DB
10.63
PV
14.00
HK
15.50
RW
10.70
JG
14.00
CS
15.50
AZ
10.77
AE
14.00
CJ
15.70
RZ
10.97
TL
14.07
X
15.70
ID
11.37
HP
14.07
BO
15.80
W
11.47
P
14.27
RD
15.80
PB
11.57
BA
14.40
OY
15.83
JS
11.60
JX
14.43
FN
15.83
HL
11.83
JY
14.47
SZ
15.87
VI
11.93
CA
14.47
AH
16.00
NJ
11.97
QX
14.53
VH
16.37
EO
12.00
PQ
14.77
RV
16.40
T
12.03
VG
14.90
N
16.60
UQ
12.53
SC
14.93
KH
16.60
GQ
12.73
S
14.93
J
16.70
RF
12.80
AK
15.00
M
16.77
TH
12.87
CK
15.03
A
16.77
NT
12.93
UN
15.03
OF
16.80
EB
13.00
NO
15.07
CE
16.83
FZ
13.23
QZ
15.10
BH
16.90
SF
13.30
U
15.13
SS
17.37
L
13.30
AW
15.17
SD
17.60
SI
13.43
AL
15.17
OX
17.60
AJ
13.47
UW
15.27
AF
17.70
DE
13.60
VT
15.30
PW
17.83
BC
13.67
QJ
15.33
I
18.03
TI
13.90
SM
15.33
BM
18.03
KL
• s No data submitted
TAG SYMBOLS
IT s Above control limit
0 s Insufficient data
^
x - Determined to be an outlier
li s Below control limit
-------
20 / 20 CRD-LV Performance Evaluation: Uranium-Radium in Water, 16-Jun-1995
Radium-228
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
18.23
TD
18.97
DZ
22.60
It
VA
18.27
TN
19.07
C
23.00
It.
GN
18.37
BK
20.07
«l£
25.00
X
QU
18.77
DT
20.20
UP
32.70
X
ST
38.63
X
RK
% responding labs
Frequency distribution
10-
y—MM—
kill
, I I
-4 -2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
—r-
+4
-r*
+6
-6
responding labs
10-
o-—r
-6
MM—
hhIJ^Lb, ¦
0 +2
T"
+6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft s Above control limit
II s Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-96/012
February 1996
<&EPA Strontium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the July 14, 1995 Data
023RSL96 cov-012
-------
Strontium in Water
Performance Evaluation Study
July 14, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-US VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Strontium In Water; July 14,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity :
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Strontium in Water, 14-Jul-1995
1/12
The following pages consist of separate sections for each of the nuclides in t.hia study with four
parts per section. After the first, each part is separated from t.he next, hv a new paee or n thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the wiaTimum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/ 12
CRD-LV Performance Evaluation: Strontium in Water, 14-Jul-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range ia calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
-------
CRD-LV Performance Evaluation: Strontium in Water, 14-Jul-1995
3/12
Strontium-89 Statistical Summary 106 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of B.0; the control limits
are 11.3 to 28.7; the warning regions are 11.3 to 14.2 and 25.8 to 28.7
19(17.9 %) Failed to respond
6(5.7 %) Out of control •
but not an outlier
Statistic
71(67.0 %) Within all limits
Respondents
10(9.4 %) In warning zone
but within'control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
18.07 •
Grand Avg 18.07
3.98
3.98
15.87
15.87
22.05
22.05
-9.67
-9.67
-0.49
-0.49
18.67
18.67
-6.67
,-6.67
-0.33
-0.33
51(58.6 %) Within 1 norm. S.D.
of known value
8(9.2 %) More than 3 norm. S.D,
-------
4/12 CRD-LV Performance Evaluation:
Strontium in Water, 14-Jul-1995
^
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
20.0
21.0
21.0
0.58
0.118
20.67
0.90
0.23
AE
18.0
18.0
17.0
0.58
0.118
17.67
-0.14
-0.81
AF
20.0
20.0
20.0
0.00
0.000
20.00
0.67
0.00
AJ
21.0
15.0
13.0
4.16
0.945
16.33
-0.60
-1.27
AK
12.0
11.0
11.0
0.58
0.118
11.33
-2.33
-3.00
AL
18.0
22.0
23.0
2.65
0.591
21.00
1.02
0.35
AU
21.0
23.0
22.0
1.00
0.236
22.00
1.36
0.69
AW
22.0
19.0
17.0
2.52
0.591
19.33
0.44
-0.23
AY
-'' r '/
T>* * sv\ *¦> ' 4
AZ
17.0
18.0
20.0
1.53
0.354
18.33
0.09
-0.58
BA
23.0
21.0
22.0
1.00
0.236
22.00
1.36
0.69
BB
s > f\.s •%„
s v'' - *'
SSISl
X- *" !*""
BC
16.0
15.0
180
1.53
0.354
,16:33
-0.60
-1.27
BO
8.0
% ' .. ,
'-'•V-x.C
BH
18.0
16.0
17.0
1.00
0.236
17.00
-0.37
-1.04
BL
21.0
21.0
21.0
0.00
0.000
21.00
1.02
0.35
BM
9.0
11.0
10.0
1.00
0.236
10.00
-2.79
-3.46
Ji
BO
21.0
21.0
20.0
0.58
0.118
20.67
0.90
0.23
C
20.0
21.0
21.0
0.58
0.118
20.67
0.90
0.23
CA
23.0
23.0
25.0
115
0.236
23.67
1.94
_ 127
CE
' < *
" v v iF" -*'Y > vS/
/ <. r^<.
* ;. * *'
' ;;/v*
, ?' v .
• ^ >
CG
23.0
18.0
24.0
3.21
0.709
21.67
1.25
0.58
CJ
18.0
20.0
17.0
1.53
0.354
18.33
0.09
-0.58
CK
16.0
19.0
15.0
2.08
0.473
16.67
-0.48
-1.15
CO
12.0
12.0
15.0
1.73
0.354
13.00
-1.75
-2.42
CQ
14.0
15.0
16.0
1.00
0.236
15.00
-1.06
-1.73
CS
17.0
17.0
16.0
_ 0.58
0.118
16.67
-0.48
-1.15
CX
-«* ~7?
, ' '<0 ' *
',y \\ *¦''
iPi#flrt!i|iSi
D
14.0
14.0
14.0
0.00
0.000
14.00
-1.41
-2.08
DD
16.0
14.0
18.0
2.00
0.473
16.00
-0.72
-1.39
DE
20.0
20.0
21.0
0.58
0.118
20.33
0.79
0.12
DG
11.0
11.0
11.0
0.00
0.000
11.00
-2.45
-3.12
II
DO
22.0
30.0
15.0
7.51
2.470
22.33
1.48
0.81
DT
20.0
19.0
18.0
1.00
0.236
19.00
0.32
-0.35
DZ
21.0
23.0
22.0
1.00
0.236
22.00
1.36
0.69
E
20.0
18.0
20.0
1.15
0.236
19.33
0.44
-0.23
EB
20.0
20.0
19.0
0.58
0.118
19.67
0.55
-0.12
EL
18.0
18.0
18.0
0.00
0.000
18.00
-0.02
-0.69
EX
<:':V
HMH
i#';
¦>.'; is«
il?§
FU
25.0
26.0
27.0
1.00
0.236
26.00
«... 275
2.08
FZ
17.0
15.0
16.0
1.00
0.236
16.00
-0.72
-1.39
GQ
23.0
25.0
27.0
2.00
0.473
25.00
2.40
1.73
HK
18.0
17.0
19.0
1.00
0.236
18.00
-0.02
-0.69
HP
20.0
17.0
18.0
1.53
0.354
18.33
0.09
-0.58
I
19.0
21.0
21.0
1.15
0.236
20.33
0.79
0.12
• =
No data submitted
TAG SYMBOLS
It = Above control limit
0 a
v-
Insufficient data
X 3
Determined to be an outlier
II = Below control limit
-------
Performance Evaluation: Strontium in Water, 14-Jul-1995 5/12
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
IC
19.0
18.0
18.0
0.58
0.118
18.33
0.09
-0.58
J
21.0
200
20.0
0.58
0.118
20.33
0.79
0.12
JE
....
JG
*. ' ' » >\.
* ~ " s SJ '
JS
18.0
22.0
16.0
3.06
0.709
18.67
0.21
-0.46
JY
.' " ' • • 11 v
K
14.0
15.0
16.0
1.00
0.236
15.00
-1.06
-1.73
KH
21.0
20.0
21.0
0.58
0.118
20.67
0.90
0.23
KL
19.0
18.0
18.0
0.58
0.118
18.33
0.09
-0.58
KX
18.0
17.0
18.0
0.58
0.118
17.67
-0.14
-0.81
L
20.0
20.0
19.0
0.58
0.118
19.67
0.55
-0.12
LT
28.0
25.0
26.0
1.53
0.354
26.33
2.86
2.19
M
18.0
19.0
20.0
1.00
0.236
19.00
0.32
-0.35
MQ
17.0
19.0
19.0
1.15
0.236
18.33
0.09
-0.58
N
19.0
18.0
20.0
1.00
0.236
19.00
0.32
-0.35
NJ
15.0
19.0
17.0
2.00
0.473
17.00
-0.37
-1.04
NO
23.0
24.0
25.0
1.00
0.236
24.00
2.06
1.39
NT
16.0
16.0
16.0
0.00
0.000
16.00
-0.72
-1.39
OA
18.0
210
20.0
1.53
0.354
19.67
0.55
-0.12
OL
-
Ifptfgp
PB
21.0
20.0
20.0
0.58
0.118
20.33
0.79
0.12
PV
25.0
21.0
19.0
3.06
0.709
21.67
1.25
0.58
Q
18.0
19.0
21.0
1.53
0.354
19.33
0.44
-0.23
QJ
¦SiiWP
•
QU
15.0
15.0
15.0
0.00
0.000
15.00
-1.06
-1.73
QW
16.0
17.0
18.0
1.00
0.236
17.00
-0.37
-1.04
QZ
16.0
15.0
19.0
2.08
0.473
16.67
-0.48
-1.15
R
11.0
6.0
7.0
2.65
0.591
8.00
-3.49
-4.16
RR
20.0
20.0
21.0
0.58
0.118
20.33
0.79
0.12
RV
llffi
~-'th '¦
S
20.0
19.0
19.0
0^58
0.118
19.33
0.44
-0.23
sc
15.0
16.0
18.0
1.53
0.354
16.33
-0.60
-1.27
SD
20.0
22.0
19.0
1.53
0.354
20.33
0.79
0.12
SF
20.0
16.0
15.0
2.65
0.591
17.00
-0.37
-1.04
SI
8.0
8.0
9.0
0.58
0.118
8.33
-3.37
-4.04
SM
19.0
21.0
18.0
1.53
0.354
19.33
0.44
-0.23
SS
18.0
17.0
19.0
1.00
0.236
18.00
-0.02
-0.69
ST
190
18.0
21.0
1.53
0.354
19.33
0.44
-0.23
SZ
, '-.r'
y?.
T
19.0
17.0
19.0
1.15
0.236
18.33
0.09
-0.58
TD
13;°
110
10.0
1.53
0.354
11.33
-2.33
-3.00
• TE
"9 ,
TH
* *f*
n
12.0
13.0
13.0
0.58
0.118
12.67
-1.87
-2.54
TL
20.0
20.0
22.0
1.15
0.236
20.67
0.90
0.23
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft a Above control limit
II = Below control limit
^ JJ
-------
[(
6/12
CRD-LV Performance Evaluation
Strontium in Water, 14-Jul-1995
^
Strontium-89
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Kes. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
TQ
17.0
18.0
22.0 2.65
0.591
19.00 0.32 -0.35
U
20.0
18.0
19.0 1.00
0.236
19.00 0.32 -0.35
UE
17.0
20.0
21.0 ' 2.08
0.473
19.33 0.44 -0.23
UN
12.0
13.0
10.0 1.53
0.354
11.67 -2.22 -2.89
UP
13.0
15.0
16.0 1.53
0.354
14.67 -1.18 -1.85
uw
18.0
17.0
18.0 0.58
0.118
17.67 -0.14 -0.81
VA
10.0
11.0
10.0 0.58
0118
10.33 -2.68 -3.35
I
VC
|||f|
* • 9 . *
VG
nits!
®lf|l
•
VI
24.0
21.0
17.0 3.51
0.827
20.67 0.90 0.23
VR
#|S§t
IBIfttil
, >V a
•
W
18.0
22.0
20.0 2.00
0.473
20.00 0.67 0.00
WF
19.0
37.0
29.0 9.02
3.146
28.33 3.56 2.89
WG
I o '
lllillli
9
WI
12.0
14.0
9.0 2.52
0.591
1L67 -2.22 -2.89
X
9.0
7.0
6.0 1.53
0.354
7.33 -3.72 -4.39
U
Data sorted by Laboratory Averaf
f©
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
7.33
11
X
17.00
SF
19.33
S
8.00
U
R
17.00
QW
19.33
Q
8.33
11
SI
17.00
NJ
19.33
E
10.00
H
BM
17.00
BH
19.33
AW
10.33
Jl
VA
17.67
UW
19.67
OA
11.00
11
DG
17.67
KX
19.67
L
11.33
TD
17.67
AE
19.67
EB
11.33
AK
18.00
ss
20.00
W
11.67
WI
18.00
HK
20.00
AF
11.67
UN
18.00
EL
20.33
SD
12.67
TI
18.33
T
20.33
RR
13.00
CO
18.33
MQ
20.33
PB
14.00
D
18.33
KL
20.33
J
14.67
UP
18.33
IC
20.33
I
15.00
QU
18.33
HP
20.33
DE
15.00
K
18.33
CJ
20.67
VI
15.00
CQ
18.33
AZ
20.67
TL
16.00
NT
18.67
JS
20.67
KH
16.00
FZ
19.00
U
20.67
C
16.00
DD
19.00
TQ
20.67
BO
16.33
SC
19.00
N
20.67
A
16.33
BC
19.00
M
21.00
BL
16.33
AJ
19.00
DT
21.00
AL
16.67
QZ
19.33
UE
21.67
PV
16.67
CS
19.33
ST
21.67
CG
16.67
CK
19.33
SM
22.00
DZ
• = No data submitted
TAG SYMBOLS
It = Above control limit
0 = Insufficient data
x s Determined to be an outlier
J1 = Below control limit
jj
-------
CRD-LV Performance Evaluation: Strontium in Water, 14-Jul-1995
7/12
Strontium-89
Data sorted by Lnhmntory Average
Average
Tag -
Lab
Average
Tag
Lab
Average
Tag
Lab
22.00
BA
23.67
CA
26.00
FU
22.00
AU
24.00
NO
26.33
LT
22.33
DO
25.00
gq
28.33
WF
% responding labs
Frequency distribution
% responding labs
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
104
o
•6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS ft ¦ Above control limit
0 = insufficient data x = Determined to be an outlier U = Below control limit
-------
CRD-LV Performance Evaluation: Strontium in Water, 14-Jul-1995
8/12
Strontium-90 Statistical Summary 106 Participants
The known value of this nuclide is 8.0 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 16.7; the warning regions are 0.0 to 2.2 and 13.8 to 16.7
11(10.4 %) Failed to respond
. 93(87.7 %) Within all limits
* N\
* \l\
• \N.
• \
• xl
2( 1.9 %) Outliers '
|
•
• yfy
I t
Statistic
Respondents
Non-outliers
Mean
7.98
Grand Avg 7.72
Std. Dev.
2.42
1.67
Variance
5.85
2.80
% Coef. of Var.
30.30
21.68
% deviation of mean from known value
-0.26
-3.45
Norm. dev. of mean from known value
-0.01
-0.16
Median
7.67
7.67
% deviation of median from known value
-4.17
-4.17
Norm. dev. of median from known value
-0.14
-0.20
2(2.1 %) More than 3 norm. S.D. «
, 83(87.4 %) Within 1 norm. S.D.
9
of known value
10(10.5 %) Between 1 and 2 norm. S.D.
-------
r
9/12 CRD-LV Performance Evaluation:
Strontium in Water, 14-Jul-1995
^
Strontium-90
\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
fknown) Tog
A
7.0
8.0
8.0
0.58
0.118
7.67
-0.02
-0.12
AE
6.0
6.0
7.0
0.58
0.118
6.33
-0.48
-0.58
AF
7.0
8.0
7.0
0.58
0.118
7.33
-0.14
-0.23
AJ
8.0
8.0
9.0
0.58
0.118
8.33
0.21
0.12
AK
11.0
11.0
13.0
1.15
0.236
11.67
1.37
1.27
AL
7.0
7.0
7.0
0.00
0.000
7.00
-0.25
-0.35
AU
6.0
7.0
6.0
0.58
0.118
6.33
-0.48
-0.58
AW
8.0
8.0
10.0
1.15
0.236
8.67
0.33
0.23
AY
6.0
7.0
6.0
0.58
0.118
6.33
-0.48
-0.58
AZ
8.0
7.0
7.0
0.58
0.118
7.33
-0.14
-0.23
BA
7.0
8.0
8.0
0.58
0.118
7.67
-0.02
-0.12
BB
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
BC
7.0
7.0
7.0
0.00
0.000
7.00
-0.25
-0.35
BG
8.0
7.0
7.0
0.58
0.118
7.33
-0.14
-0.23
BH
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
BL
9,0
8.0
9.0
0.58
0.118
8.67
0.33
0.23
BM
4.0
4.0
4.0
0.00
0.000
4.00
-1.29
-1.39
BO
6.0
6.0
7.0
0.58
0.118
6.33
-0.48
-0.58
C
9.0
8.0
9.0
0.58
0.118
8.67
0.33
0.23
CA
9.0
9.0
10.0
0.58
0.118
9.33
0.56
0.46
CE
7.0
7.0
7.0
0.00
0.000
7.00
-0.25
-0.35
CG
7.0
9.0
7.0
1.15
0.236
7.67
-0.02
-0.12
CJ
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
CK
10.0
10.0
8.0
1.15
0.236
9.33
0.56
0.46
CO
7.0
7.0
6.0
0.58
0.118
6.67
-0.37
-0.46
CQ
7.0
8.0
9.0
1.00
0:236
8.00
0.10
0.00
CS
9.0
9.0 ;
9.0
0.00
0.000
9.00
0.44
0.35
CX
* *'1
v*„ ' ',
D
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
DD
8.0
9.0
7.0
1.00
0.236
8.00
0.10
0.00
DE
9.0
10.0
10.0
0.58
0.118
9.67
0.67
0.58
DG
6.0
6.0
6.0
0.00
0.000
6.00
-0.60
-0.69
DO
7.0
6.0
7.0
0.58
0.118
6.67
-0.37
-0.46
DT
6.0
7.0
6.0
0.58
0.118
6.33
-0.48
-0.58
DZ
10.0
10.0
10.0
0.00
0.000
10.00
0.79
0.69
E
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
EB
7.0
8.0
8.0
0.58
0.118
7.67
-0.02
-0.12
EL
9.0
10.0
9.0
0.58
0.118
9.33
0.56
0.46
EX
1
liilllllil
" • -
FU
5.0
6.0
7.0
1.00
0.236
6.00
-0.60
-0.69
FZ
11.0
10.0
10.0
0.58
0.118
10.33
0.90
0.81
GQ
12.0
13.0
13.0
0.58
0.118
12.67
1.71
1.62
HK
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
HP
8.0
8.0
7.0
0.58
0.118
7.67
-0.02
-0.12
I
8.0
6.0
7.0
1.00
0.236
7.00
-0.25
-0.35
• =
No data submitted
TAG SYMBOLS
1T = Above control limit
0 =
^
Insufficient data
x =
Determined to be an outlier
= Below control limit
-y
-------
CRD-LV Performance Evaluation: Strontium in Water, 14-Jul-1995 10/12
Stronti um-90
Lab
Res. 1
Res. 2
Exper.
Rnganal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
IC
7.0
7.0
7.0
0.00
0.000
7.00
-0.25
-0.35
J
9.0
9.0
8.0
0.58
0.118
8.67
0.33
0.23
JE
'¦4
% 5 "¦ V. '
. \
llill®l
% ¦.-"W Witt's* ^ s
JG
¦¦
iliilBS
>:?-J
-*#»! 4 vi -•£&"
JS
6.0
7.0
7.0
0.58
0.118
6.67
-0.37
-0.46
JY
13.0
12.0
12.0
0.58
0.118
12.33
1.60
1.50
K
8.0
5.0
8.0
1.73
0.354
7.00
-0.25
-0.35
KH
7.0
7.0
7.0
0.00
0.000
7.00
-0.25
-0.35
KL
8.0
9.0
7.0
1.00
0.236
8.00
0.10
0.00
KX
7.0
8:o
7.0
0.58
0.118
7.33
-0.14
-0.23
L
7.0
8.0
8.0
0.58
0.118
7.67
-0.02
-0.12
LT
3.0
4.0
4.0
0.58
0.118
3.67
-1.41
-1.50
M
5.0
6.0
6.0
0.58
0.118
5.67
-0.71
-0.81
MQ
9.0
8.0
8.0
0.58
0.118
8.33
0.21
0.12
N
7.0
8.0
7.0
0.58
0.118
7.33
-0.14
-0.23
NJ
9.0
7.0
8.0
1.00
0.236
8.00
0.10
0.00
NO
7.0
7.0
7.0
0.00
0.000
7.00
-0.25
-0.35
NT
7.0
7.0
7.0
0.00
0.000
7.00
-0.25
-0.35
OA
9.0
8.0
9.0
0.58
0.118
8.67
0.33
0.23
OL
>¦ .V' b ' '•
PB
10.0
9.0
10.0
0.58
0.118
9.67
0.67
0.58
PV
4.0
6.0
6.0
1.15
0.236
5.33
-0.83
-0.92
Q
10.0
10.0
10.0
0.00
0.000
10.00
0.79
0.69
QJ
11.0
9.0
6.0
2.52
0.591
8.67
0.33
0.23
QU
4.0
6.0
8.0
2.00
0.473
6.00
-0.60
-0.69
QW
6.0
7.0
6.0
0.58
0.118
6.33
-0.48
-0.58
QZ
6.0
6.0
6.0
0.00
0.000
6.00
-0.60
-0.69
R
9.0
9.0
10.0
0.58
0.118
9.33
0.56
0.46
RR
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
RV
S
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
sc
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
SD
7.0
5.0
6.0
1.00
0.236
6.00
-0.60
-0.69
SF
10.0
11.0
10.0
0.58
0.118
10.33
0.90
0.81
SI
4.0
4.0
4.0
0.00
0.000
4.00
-1.29
-1.39
SM
7.0
7.0
8.0
0.58
0.118
7.33
-0.14
-0.23
SS
9.0
8.0
8.0
0.58
0.118
8.33
0.21
0.12
ST
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
SZ
10.0
11.0
10.0
0.58
0.118
10.33
0.90
0.81
T
7.0
8.0
6.0
1.00
0.236
7.00
-0.25
-0.35
TD
3.0
5.0
7.0
2.00
0.473
5.00
-0.94
-1.04
TE
-------
(f—
11/12
CRD-LV Performance Evaluation
: Strontium in Water, 14-Jul-1995
Sv
Strontium-90
T 1
Exper.
Rng anal
Normalized deviation
Lab
Kes. 1 Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TQ
9.0
7.0
8.0
1.00
0.236
8.00
0.10
0.00
U
7.0
8.0
8.0
0.58
0.118
7.67
-0.02
-0.12
UE
8.0
8.0
7.0
0.58
0.118
7.67
-0.02
-0.12
UN
4.0
6.0
4.0
1.15
0.236
4.67
-1.06
-1.15
UP
8.0
9.0
8.0
0.58
0.118
8.33
0.21
0.12
uw
8.0
7.0
7.0
0.58
0.118
7.33
-0.14
-0.23
VA
10.0
10.0
10.0
0.00
0.000
10.00
0.79
0.69
vc
jSlp#
illillllllilil
mMjWmmMIM
flSllil
•
VQ
MP
pliiillilii
a * * £ At />
SjllPl
VI
10.0
11.0
13.0
1.53
0.354
11.33
1.25
115
VR
slfl<pt
lllllf
JIlBllll
W
7.0
6.0
7.0
0^58
0.118
6.67
-0.37
-0.46
WF
8.0
8.0
8.0
0.00
0.000
8.00
0.10
0.00
WG -
flPpil
fesif
Itlllpf WW-
•:Sl*fl;S8
fill
*+° ¦
WI
4.0
5.0
4.0
0.58
0.118
4.33
-1.17
-1.27
X
•1T.0VV.*
19.0
19.0
iiig -
0.236
18.33
3.68
: 3.68 -
X
Data sorted by Laboratory Average
Average
Tasr
Lab
Average
Tag
Lab
Average Tag
Lab
3.67
LT
7.00
KH
8.00
SC
4.00
SI
7.00
K
8.00
s
4.00
BM
7.00
IC
8.00
RR
4.33
WI
7.00
I
8.00
NJ
4.67
UN
7.00
CE
8.00
KL
5.00
TD
7.00
BC
8.00
HK
5.33
PV
7.00
AL
8.00
E
5.67
M
7.33
UW
8.00
DD
6.00
SD
7.33
SM
8.00
D
6.00
QZ
7.33
N
8.00
CQ
6.00
QU
7.33
KX
8.00
CJ
6.00
FU
7.33
BG
8.00
BH
6.00
DG
7.33
AZ
8.00
BB
6.33
QW
7.33
AF
8.33
UP
6.33
DT
7.67
UE
8.33
TI
6.33
BO
7.67
U
8.33
SS
6.33
AY
7.67
L
8.33
MQ
6.33
AU
•
7.67
HP
8.33
AJ
6.33
AE
7.67
EB
8.67
QJ
6.67
W
7.67
CG
8.67
OA
6.67
JS
7.67
BA
8.67
J
6.67
DO
7.67
A
8.67
C
6.67
CO
8.00
WF
8.67
BL
7.00
T
8.00
TQ
8.67
AW
7.00
NT
8.00
TL
9.00
CS
7.00
NO
8.00
ST
9.33
R
• 5 No data submitted
TAG SYMBOLS
ft = Above control limit
[ 0 = Insufficient data
X s
Determined to be an outlier
= Below control limit
i>
-------
"
CRD-LV Performance Evaluation: Strontium in Water, 14-Jul-1995 12/12
Strontium-90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.33
EL
10.00
VA
11.33
VI
9.33
CK
10.00
Q
11.67
AK
9.33
CA
10.00
DZ
12.33
JY
9.67
PB
10.33
SZ
12.67
gq
9.67
DE
10.33
SF
18.33
X
X
10.33
FZ
21.33
X
TH
% responding labs
20-f"
10-
Frequency distribution
% responding labs
•4 -2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
-2 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT a Above control limit
Ji =5 Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, OC 20460
EPA 600/R-95/143
September 1995
Gross Alpha-Beta in
Water Performance
Evaluation Study
A Statistical Evaluation of
the July 21, 1995 Data
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
July 21, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Veaas. Nevada
-------
V/
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Radiation Sciences Branch (CRD-LV)
Performance Evaluation Study for Gross Alpha-Beta In Water; July 21,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radlochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which Is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity*
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 1/18
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who'are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory,
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum nf six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/18
V
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater them or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the,
laboratory's three results. The standard error of the mean is calculated by dividing the expected .,
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, CRD-LV, 702/798-2104.
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 3/18
Gross Alpha Statistical Summary 197 Participants
The known value of this nuclide is 27.5 pCi/1 with an expected precision of 6.9; the control limits
are 15.5 to 39.5; the warning regions are 15.5 to 19.5 and 35.5 to 39.5
23(11.7 %) Failed to respond
33(16.8 %) Out of control
but not an outlier
Statistic
. 81(41.1 %) Within all limits
Respondents
60(30.5 %) In warning zone
but within control
Nori-outliers
Mean
19.75
Grand Avg 19.75
Std. Dev.
5!46
5.46
Variance
29.76
29;76
%Coef. ofVar.
27.62
27.62
% deviation of mean from known value
-28.17
-28.17
Norm. dev. of mean from known value
-1.42
-1.42
Median
19.32
19.32
% deviation of median from known value
-29.76
-29.76
Norm. dev. of median from known value
-1.50
-1.50
33(19.0 %) More than 3 norm. S.D. •
60(34.5 %) Between 2 and 3 norm. S.D.*
. 35(20.1 %) Within 1 norm. S.D.
of known value
'46(26.4%) Between 1 and 2 norm. S.D.
-------
4/18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Ti
A
21.5
24.7
24.4
1.77
0.274
23.53
0.95
-1.00
AE
34.0
31.4
32.2
1.33
0.223
32.53
3.21
1.26
AF
16.1
15.5
15.7
0.31
0.051
15.77
-1.00
-2.95
AH
wmmm
AJ
17.4
18.6
18.7
0.72
0.111
18.23
-0.38
-2.33
AK
15.3
15.9
16.2
0.46
0.077
15.80
-0.99
-2.94
AL
22.9
21.6
20.2
1.35
0.231
21.57
0.45
-1.49
AN
29.8
27.9
29.5
1.02
0.163
29.07
2.34
0.39
AP
21.2
23.6
19.0
2.30
0.394
21.27
0.38
-1.56
AR
31.9
34.7
26.4
4.22
0.711
31.00
2.82
0.88
AU
17.0
14.0
16.0
1.53
0.257
15.67
-1.03
-2.97
AW
18.6
19.4
20.2
0.80
0.137
19.40
-0.09
-2.03
AZ
27.7
24.3
26.3
1.71
0.291
26.10
1.59
-0.35
BA
17.6
17.2
18.8
0.83
0.137
17.87
-0.47
-2.42
BB
16.4
17.9
16.0
1.00
0.163
16.77
-0.75
-2.69
BC
20.7
14.7
16.0
3.16
0.514
17.13
-0.66
-2.60
BG
16.0
15.0
15.0
0.58
0.086
15.33
-1.11
-3.05 J
BH
19.8
22.0
20.7
1.11
0.188
20.83
0.27
-1.67
BI
17.0
15.0
17.0
1.15
0.171
16.33
-0.86
-2.80
BK
20.2
20.6
20.4
0.20
0.034
20.40
0.16
-1.78
BL
35.8
36.6
31.2
2.91
0.462
34.53
3.71
1.77
BM
26.7
26.3
25.2
0.78
0.128
26.07
1.58
-0.36
BN
25.9
26.4
26.6
0.36
0.060
26.30
1.64
-0.30
BO
25.7
22.5
20.7
2.53
0.428
22.97
0.81
-1.14
C
19.4
18.3
19.9
0.82
0.137
19.20
-0.14
-2.08
CA
18.8
14.0
16.4
2.40
0.411
16.40
-0.84
-2.79
CE
19.5
18.8
22.3
1.85
0.300
20.20
0.11
-1.83
CG
15.3
19.7
21.7
3.27
0.548
18.90
-0.21
-2.16
CJ
17.0
18.0
20.0
1.53
0.257
18.33
-0.36
-2.30
CK
24.6
25.1
21.2
2.12
0.334
23.63
0.97
-0.97
CO
18.1
14.5
14.2
2.17
0.334
15.60
-1.04
-2.99
CP
15.0
13.0
16.0
1.53
0.257
14.67
-1.28
-3.22 J
CQ
17.0
15.2
16.2
0.90
0.154
16.13
-0.91
-2.85
CS
27.0
30.9
28.1
2.01
0.334
28.67
2.24
0.29
CX
25.0
9.7
24.4
8.67
1.590
19.70
-0.01
-1.96
D
20.6
18.6
19.0
1.06
0.171
19.40
-0.09
-2.03
DB
23.3
23.5
24.0
0.36
0.060
23.60
0.97
-0.98
DD
16.9
15.8
20.2
2.29
0.377
17.63
-0.53
-2.48
DE
20.1
20.2
20.3
0.10
0.017
20.20
0.11
-1.83
DH
17.3
18.4
16.6
0.91
0.154
17.43
-0.58
-2.53
DI
22.6
21.7
21.8
0.49
0.077
22.03
0.57
-i.37
DM
v >
BSIiilPB
DO
17.0
19.0
25.0
4.16
0.685
20.33
0.15
-1.80
DR
21.0
16.0
17.0
2.65
0.428
18.00
-0.44
-2.38
DS
12.8
12.5
12.4
0.21
0.034
12.57
-1.80
-3.75 J
• s No data submitted TAG SYMBOLS It = Above control limit
0 = Insufficient data x a Determined to be an outlier li = Below control limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 5/1®
Gross Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
DT
19.6
20.4
21.9
1.17
0.197
20.63
0.22
-1.72
DZ
19.1
19.7
18.4
0.65
0.111
19.07
-0.17
-2.12
E
20.7
20.2
21.4
0.60
0.103
20.77
0.25
-1.69
EB
24.2
24.4
25.7
0.81
0.128
24.77
1.26
-0.69
EL
14.4
14.1
13.2
0.62
0.103
13.90
-1.47
-3.41
u
EN
13.3
10.9
14.6
1.88
0.317
12.93
-1.71
-3.66
u
EO
16.0
17.0
17.0
0.58
0.086
16.67
-0.78
-2.72
EE
22.5
23.3
21.8
0.75
0.128
22.53
0.70
-1.25
EV
18.6
16.6
16.2
1.29
0.205
17.13
-0.66
-2.60
EW
24.6
23.2
24.3
0.74
0.120
24.03
1.07
-0.87
EX
' '' ^
FF
20.0
20.0
19.0
0.58
0.086
19.67
-0.02
-1.97
FJ
26.6
25.3
23.1
1.77
0.300
25.00
1.32
-0.63
FL
23.0
13.0
14.0
5.51
0.856
16.67
-0.78
-2.72
FN
15.3
14.6
16.9
1.18
0.197
15.60
-1.04
-2.99
FZ
13.0
15.0
15.0
115 .
0.171
14.33
-1.36
-3.31
u
GE
. ; '
illlllSllt
- f 'v
GQ
22.3
22.3
21.7
0.35
0.051
22.10
0.59
-1.36
GT
14.3
14.6
11.8
1.54
0.240
13.57
-1.55
-3.50
U
GZ
26.5
25.6
25.3
0.62
0.103
25.80
1.52
-0.43
HI
19.0
18.0
16.0
1.53
0.257
17.67
-0.52
-2.47
HK
20.1
18.6
19.9
0.81
0.128
19.53
-0.06
-2.00
HL
16.9
13.0
12.8
2.31
0.351
14.23
-1.39
-3.33
U
HP
23.0
17.9
15.3
3.92
0.659
18.73
-0.26
-2.20
I
24.2
24.7
25.6
0.71
0.120
24.83
1.27
-0.67
IC
19.9
20.1
19.1
0.53
0.086
19.70
-0.01
-1.96
ID
17.1
15.4
16.8
0.91
0.146
16.43
-0.83
-2.78
J
31.9
30.0
26.6
2.69
0.454
29.50
2.45
0.50
¦ JE
'
JG
17.0
18.3
18.5
0.81
0.128
17.93
-0.46
-2.40
JM
12.0
13.0
13.0
0.58
0.086
12.67
-1.78
-3.72
U
JN
17.3
20.0
18.5
1.35
0.231
18.60
-0.29
-2.23
JP
17.6
17.2
16.1
0.78
0.128
16.97
-0.70
-2.64
JQ
21.4
24.8
22.9
1.70
0.291
23.03
0.82
-1.12
JS
20.9
18.1
189
1.44
0.240
19:30
-0.11
-2.06
JY
' , ^
„
y V % a
•
K
19.9
14.5
20.1
3.18
0.479
18.17
-0.40
-2.34
KC
s N ' %
. • -¦
KE
23.1
25.0
24.3
0.96
0.163
24.13
1.10
-0.85
KH
28.0
31.7
28.7
1.97
0.317
29.47
2.44
0.49
KT
22.0
22.0
21.0
0.58
0.086
21.67
0.48
-1.46
KX
18.0
19.0
17.0
1.00
0.171
18.00
-0.44
-2.38
L
10.6
11.6
11.4
0.53
0.086
11.20
-2.15
-4.09
LF
14.0
13.0
10.0
2.08
0.342
12.33
-1.86
-3.81
u
LL
27.6
32.1
26.3
3.04
0.497
28.67
2.24
0.29
• s No data submitted TAG SYMBOLS If a Above control limit
0 = Insufficient data x = Determined to be an outlier a Below control limit ,j
-------
([
Jv
6/18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Alpha
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LA
7.2
7.8
5.9
0.97
0.163
6.97
-3.21
-5.15
LT
15.6
12.8
13.5
1.46
0.240
13.97
-1.45
-3.40
M
38-0
35.0
42.0
3.51
0.599
38.33
4.66
J2.72^
MA
If#®:;®;®
MF
26.5
27.0
26.2
0.40
0.068
26.57
1.71
-0.23
MQ
24.0
22.0
26.0
2.00
0.342
24.00
1.07
-0.88
MV
17.9
15.0
14.0
2.03
0.334
15.63
-1.03
-2.98
MX
280
32.7
27.5
2.87
0.445
29.40
2.42
0.48
MY
S ' ' "¦ ''
N
24.0
28.0
32.0
4.00
0.685
28.00
2.07
0.13
NA
18.6
20.9
21.1
1.39
0.214
20.20
0.11
-1.83
NB
11.2
12.6
12.0
0.70
0.120
11.93
-1.96
-3.91
NE
; v
> , • *
NJ
14.7
13.1
13.9
0.80
0.187
13.90
-1.47
-3.41
NK
-V ..
ISIlili
/-'V"
NO
17.1
18.8
18.6
0.93
0.146
18.17
-0.40
-2.34
NP
28.9
30.9
30.6
1.08
0.171
30.13
2.61
0.66
NT
18.4
18.1
17.8
0.30
0.051
18.10
-0.42
-2.36
O
26.0
24.8
24.5
0.79
0.128
25.10
1.34
-0.60
OA
21.0
23.0
19.0
2.00
0.342
21.00
0.31
-1.63
OB
23.4
23.6
22.6
0.53
0.086
23.20
0.86
-1.08
OF
22.2
17.4
13.7
4.26
0.728
17.77
-0.50
-2.44
OS
19.0
18.0
21.0
1.53
0.257
19.33
-0.11
-2.05
OX
27.1
21.9
17.0
5.05
0.865
22.00
0.56
-1.38
OY
28.8
33.7
33.2
2.70
0.419
31.90
3.05
1.10
OZ
18.3
20.4
20.6
1.27
0.197
19.77
0.00
-1.94
P
32.1
33.9
34.2
1.14
0.180
33.40
3.43
1.48
PB
20.4
21.8
20.1
0.91
0.146
20.77
0.25
-1.69
PG
25.8
22.8
25.3
1.61
0.257
24.63
1.22
-0.72
PM
13.0
12.0
12.0
0.58
0.086
12.33
-1.86
-3.81
PQ
19.5
21.8
23.1
1.82
0.308
21.47
0.43
-1.51
PR
32.0
30.0
27.0
2.52
0.428
29.67
2.49 .
0.54
PV
13.1
23.1
19.9
5.11
0.856
18.70
-0.26
-2.21
Q
15.8
13.5
18.5
2.50
0.428
15.93
-0.96
-2.90
QC
15.9
13.5
12.1
1.92
0.325
13.83
-1.49
-3.43
li
QP
15.8
15.6
17.6
1.10
0.171
16.33
-0.86
-2.80
QQ
20.2
20.3
20.2
O.06
0.009
20.23
0.12
-1.82
QT
19.1
21.1
24.9
2.95
0.497
21.70
0.49
-1.46
QU
13.6
15.0
16.4
1.40
0.240
15.00
-1.19
-3.14
QW
22.4
19.0
25.8
3.40
0.582
22.40
0.66
-1.28
QX
19.3
19.6
20.9
0.85
0.137
19.93
0.04
-1.90
QZ
23.5
26.1
22.1
2.03
0.342
23.90
1.04
-0.90
R
21.8
23.7
24.5
1.39
0.231
23.33
0.90
-1.05
KB
13.6
11.8
12.6
0.90
0.154
12.67
-1.78
-3.72
RD
21.0
19.0
14.0
3.61
0.599
18.00
-0.44
-2.38
• 3
No data submitted
TAG SYMBOLS
ft s Above control limit
Ul_=
Insufficient data
X s
Determined to be an outlier
= Below control limit
'J
-------
(F=====^==^=^===========^==^====^
• ¦>
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 7/18
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tasr
RE
22.0
23.5
20.2
1.65
0.282
21.90
0.54
-1.41
RG
187
18.2
20.9
1.44
0.231
1927
-0.12
-2.07
RH
¦ ;}h,
'•;CU X7' ;:v,
RI
17.2
16.3
20.8
2.38
0.385
i8.10
-0.42
-2.36
RJ
.\.v • _
• 'V
s::/^ v
V.";
RR
30.0
27.0
27.0
1.73
0.257
28.00
2.07
0.13
RU
ptllllllpSIS-
•Sv
RV
15.0
18.0
17.0
1.53
0.257
16.67
-0.78
-2.72
RW
19.1
19.6
19.4
0.25
0.043
19.37
-0.10
-2.04
RZ
25.8
23.4
25.0
1.22
0.205
24.73
1.25
-0.69
S
17.8
22.7
20.6
2.46
0.419
20.37
0.15
-1.79
sc
17.9
16.3
20.1
1.91
0.325
18.10
-0.42
-2.36
SD
22.5
24.7
21.8
1.51
0.248
23.00
0.81
-1.13
SF
19.6
19.7
19.8
0.10
0.017
19.70
-0.01
-1.96
SI
20.4
27.1
23.1
3.37
0.574
23.53
0.95
-1.00
SL
21.9
20.5
22.3
0.95
0.154
21.57
0.45
-1.49
SM
29.3
29.5
28.9
0.31
0.051
29.23
2.38
0.44
SN
11.5
6.2
10.7
2.86
0.454
9.47
-2.58
-4.53
SO
22.3
21.7
21.5
0.42
0.068
21.83
0.52
-1.42
SR
25.0
34.0
31.0
4.58
0.770
30.00
2.57
0.63
ss
25.2
19.5
20.5
3.04
0.488
21.73
0.50
-1.45
su
17.5
16.9
18.3
0.70
0.120
17.57
-0.55
-2.49
sx
23.4
22.7
21.3
1.07
0.180
22.47
0.68 ^
-1.26
SZ^;
, -
.. .**' . ..*
^ W( 5
{ > » X1
. V.V<
< a" *¦ * * •»
• r
T
11.6
9.0
10.6
1.31
0.223
10.40
-2.35
-4.29
TC
;' f
^ ,
TD
24.3
21.1
22.1
1.64
0.274
22.50
0.69
-1.26
¦ TE W
r. s
•* \
-------
(( ~
8/18
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
^
Gross Alpha
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average ' (grand-avg) (known) Tag
VA
22.8
19.5
13.5
4.71
0.796
18.60 -0.29 -2.23
VC
" • • .V V'I.--'" : - '-w': V::::¦'•
%\ ¦' • i: &
s * ' -x
< # ~T
VT
18.6
16.4
17.5
1.10
0.188
17.50 -0.57 -2.51
W
24.9
29.4
22.5
3.5°
0.591
25.60 1.47 -0.48
WD
' "I
sills
ill"
-
WE
12.0
12.3
11.3
0.51
0.086
11.87 -1.98 -3.92
n'
WF
13.2
11.0
12.1
1.10
0.188
12.10 -1.92 -3.87
u
WH
10.6
8.4
9.7
1.11
0-188
9.57 -2.56 -4.50
WJ
<
/'/, "V
Bpi^lSpi^gillipgggl
WK
lilllt
:$
1 ~
<** , f v '
!i»l
WN
12.0
11.4
11.9
0.32
0.051
11.77 -2.01 -3.95
Jl
X
16.0
13.9
14.0
1.18
0.180
14.63 -1.29 -3.23
u
Data sorted by Laboratory Avera§
:©
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
6.97
H
LR
14.23
H
HL
16.67
RV
9.47
SN
14.30
H
TG
16.67
FL
9.57
V
WH
14.33
FZ
16.67
EO
9.83
Ji
TH
14.60
a
n
16.77
BB
10.40
il
T
14.63
u
X
16.83
TO
10.87
n
UA
14.67
4
CP
16.97
JP
11.20
u
L
15.00
11
QU
17.13
EV
11.77
Ji
WN
15.33
Ji
BG
17.13
BC
11.87
I
WE
15.60
FN
17.43
DH
11.93
NB
15.60
CO
17.50
VT
11.97
11
TY
15.63
VH
17.50
UN
12.10
.11
WF
15.63
UE
17.57
SU
12.33
a
PM
15.63
1.
MV
17.63
DD
12.33
n
LF
15.67
AU
17.67
HI
12.57
it
DS
15.77
AF
17.77
OF
12.67
u
RB
15.80
AK
17.87
BA
12.67
n
JM
15.93
Q
17.93
JG
12.93
u
EN
16.00
VG
18.00
RD
13.37
n
VI
16.13
CQ
18.00
KX
13.40
u
TQ
16.27
TN
18.00
DR
13.57
n
GT
16.33
QP
18.10
SC
13.83
u
QC
16.33
BI
18.10
RI
13.90
u
NJ
16.40
CA
18.10
NT
13.90
4'
EL
16.43
ID
18.17
NO
13.97
LT
16.47
VJ
18.17
K
• s No data submitted
TAG SYMBOLS
ft 3 Above control limit
0 = Insufficient data
VS —
X
= Determined to be an outlier
= Below control limit
—4/
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Alpha
9/18
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.23
AJ
20.77
PB
24.03
EW
18.33
CJ
20.77
E
24.13
KE
18.60
VA
20.83
BH
24.63
FG
18.60
JN
21.00
OA
24.73
RZ
18.70
PV
21.27
AP
24.77
TL
18.73
TW
21.47
PQ
24.77
EB
18.73
HP
21.57
SL
24.83
I
18.90
CG
21.57
AL
25.00
FJ
19.07
DZ
21.67
KT
25.10
O
19.20
C
21.70
QT
25.60
W
19.27
RG
21.73
SS
25.80
GZ
19.30
JS
21.83
SO
26.07
BM
19.33
OS
21.90
-
RE
26.10
AZ
19.37
RW
21.97
UQ
26.30
BN
19.40
D
22.00
OX
26.57
MF
19.40
AW
22.03
DI
28.00
RR
19.50
UP
22.10
GQ
28.00
N
19.53
HK
22.40
QW
28.67
LL
19.67
FF
22.47
SX
28.67
CS
19.70
CX
22.50
TD
29.07
AN
19.70
SF
22.53
ER
29.23
SM
19.70
IC
22.97
BO
29.40
MX
19.77
oz
23.00
SD
29.47
KH
19.87
u
23.03
JQ
29.50
J
19.93
QX
23.20
OB
29.67
PR
20.20
CE
23.33
R
30.00
SR
20.20
NA
23.53
SI
30.13
NP
20.20
DE
23.53
A
31.00
AR
20.23
QQ
23.60
DB
31.90
OY
20.33
DO
23.63
CK
32.53
AE
20.37
S
23.90
QZ
33.40
P
20.40
BK
24.00
UW
34.53
BL
20.63
DT
24.00
MQ
38.33
M
% responding labs Frequency distribution
10-
- . ¦
I *" I """T"""!""'"!""""!"1*"" I"""" I - I ¦ l i
-6 -4 -2 0 +2 +4
Normalized deviation of the mean from the known value
• s No data submitted TAG SYMBOLS ft a Above control limit
0 s Insufficient data x = Determined to be an outlier Jl s Below control limit
-------
10 /18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Alpha
% responding labs Frequency distribution
*6 -4 -2 0 +2 44 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
11/18
Gross Beta Statistical Summary 197 Participants
The known value of this nuclide is 19.4 pCi/1 with an expected precision of 5.0; the control limits
are 10.7 to 28.1; the warning regions are 10.7 to 13.6 and 25.2 to 28.1
20(10.2 %) Failed to respond
140(71.1 %) Within all limits
7(3.6 %) Outliers •' /
9(4.6 %) Out of control •
* 21(10.7 %) In warning zone
but not an outlier
I I'TD^^
but within control
Statistic
Respondents
Non-outliers
Mean
31.17
Grand Avg 21.67
Std. Dev.
105.86
3.88
Variance
11206.04.
15.08
% Coef. of Var.
339.67
17.92
% deviation of mean from known value
60.65
11.68
Norm. dev. of mean from known value
0.11
0.58
Median
21.87
21.70
% deviation of median from known value
12.71
11.86
Norm. dev. of median from known value
0.02
0.59
16(9.0 %) More than 3 norm. S.D.
21 (11.9 %) Between 2 and 3 norm. S.D. •
SSI®®
80(45.2 %) Within 1 norm. S.D.
of known value
60(33.9 %) Between 1 and 2 norm. S.D.
-------
..
I —^
12 / 18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
v
/ " — i. i *
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
21.6
23.6
22.7
1.00
0.236
22.63
0.33
1.12
AE
13.0
13.3
13.8
0.40
0.095
13.37
-2.88
-2.09
AF
22.2
25.9
24.9
1.91
0.437
24.33
0.92
1.71
AH
21.0
22.0
21.8
0.53
0.118
21.60
-0.02
0.76
AJ
21.4
26.5
24.6
2.58
0.602
24.17
0.87
1.65
AK
20.5
20.0
20.4
0.26
0.059
20.30
-0.47
0.31
AL
21.9
18.8
18.1
2.02
0.449
19.60
-0.72
0.07
AN
15.9
15.4
16.7
0.66
0.154
16.00
-1.96
-1.18
AP
20.9
21.5
22.2
0.65
0.154
21.53
-0.05
0.74
AR
35.2
33.0
29.6
2.82
0.662
32.60
3.79
4.57 ft
AU
20.0
21.0
22.0
1.00
0.236
21.00
-0.23
0.55
AW
27.1
26.5
25.1
1.03
0.236
26.23
1.58
2.37
AZ
14.9
15.1
17.2
1.27
0.272
15.73
-2.06
-1.27
BA
20.3
20.7
19.3
0.72
0.165
20.10
-0.54
0.24
BB
23.2
23.2
21.3
1.10
0.224
22.57
0.31
1.10
BC
16.1
20.0
19.4
2.10
0.461
18.50
-1.10
-0.31
BG
17.0
18.0
17.0
0.58
0.118
17.33
-1.50
-0.72 :
BH
20.7
21.2
22.4
0.87
0.201
21.43
-0.08
0.70
BI
24.0
24.0
24.0
0.00
0.000
24.00
0.81
1.59
BK
23.8
24.1
25.3
0.79
0.177
24.40
0.95
1.73
BL
23.2
22.1
20.3
1.46
0.343
21.87
0.07
0.85
BM
27.2
27.5
25.6
1.02
0.224
26.77
1.77
2.55
BN
20.7
21.8
22.1
0.74
0.165
21.53
-0.05
0.74
BO
23.1
19.1
20.3
2.05
0.473
20.83
-0.29
0.50
C
21.8
21.6
22.4
0.42
0.095
21.93
0.09
0.88
CA
16.1
17.9
16.4
0.96
0.213
16.80
-1.69
-0.90
CE
22.2
21.9
21.4
0.40
0.095
21.83
0.06
0.84
CG
20.1
14.2
18.2
3.01
0.697
17.50
-1.44
-0.66
CJ
21.0
18.0
19.0
1.53
0.354
19.33
-0.81
-0.02
CK
25.2
25.4
27.2
1.10
0.236
25.93
1.48
2.26
CO
16.1
18.9
16.3
1.56
0.331
17.10
-1.58
-0.80
CP
28.0
27.0
27.0
0.58
0.118
27.33
1.96
2.75
CQ
25.4
23.0
21.4
2.01
0.473
23.27
0.55
1.34
CS
24.7
23.8
20.9
1.99
0.449
23.13
0.51
1.29
CX
29.7
19.9
20.5
5.49
1.300
23.37
0.59
1.37
D
23.8
25.8
24.0
1.10
0.236
24.53
0.99
1.78
DB
23.7
23.2
23.2
0.29
0.059
23.37
0.59
1.37
DD
25.5
25.0
22.5
1.61
0.354
24.33
0.92
1.71
DE
16.1
16.2
16.3
0.10
0.024
16.20
-1.89
-1.11
DH
21.9
22.8
21.4
0.71
0.165
22.03
0.13
0.91
DI
30.7
31.7
32.3
0.81
0.189
31.57
3.43
4.2i tr
DM
19.9
27.7
22.5
3.97
0.921
23.37
0.59
1.37
DO
23.0
20.0
21.0
1.53
0.354
21.33
-0.12
0.67
DR
21.0
24.0
22.0
1.53
0.354
22.33
0.23
1.02
DS
19.4
19.0
18.4
0.50
0.118
18.93
-0.95
-0.16
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T s Above control limit
Ji = Below control limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 13/18
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res! 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
DT
23.0
22.9
22.1
0.49
0.106
22.67
0.35
1.13
DZ
19.7
20.8
21.0
0.70
0.154
20.50
-0.40
0.38
E
25.3
25.9
23.4
1.31
0.295
24.87
1.11
1.89
EB
21.5
22.4
24.7
1.65
0.378
22.87
0.42
1.20
EL
20.8
20.8
20.4
0.23
0.047
20.67
-0.35
0.44
EN
25.2
25.4
29.3
2.31
0.484
26.63
1.72
2.51
EO
24.0
26.0
23.0
1.53
0.354
24.33
0-92
1.71 _
ER
¦ *
EV
24.4
22.4
19.8
2.31
0.543
22.20
0.18
0.97
EW
24.6
23.2
24.3
0.74
0.165
24.03
0.82
1.61
EX
FF
23.0
22.0
23.0
0.58
0.118
22.67
0.35
1.13
FJ
36.4
40.1
31.7
4.21
0.992
1 35.73
4.87 ,,
6,66 x
FL
13.0
24.0
16.0
5.69
1.570
17.67
-1.39
-0.60
FN
36.0
40.2
2.71
0.614
37.17
5.37
? 6.15 x
FZ
19.0
18.0
21.0
1.53
0.354
19.33
-0.81
-0.02
GE
22.0
22.0
23.0
0.58
0.118
22.33
0.23
1.02
GQ
19.3
19.5
19.6
0.15
0.035
19.47
-0.76
0.02
GT
20.0
15.6
18.5
2.24
0.520
18.03
-1.26
-0,47
GZ
16.6
28.4
22.0
5.91
1.750
22.33
0.23
1.02
HI
27.0
22.0
26.0
2.65
0.591
25.00
1.15
1.94
HK
22.0
25.0
25.0
1.73
0.354
24.00
0.81
1.59
HL
20.4
19.9
22.8
1.55
0.343
21.03
-0.22
0.57
HP
17.3
18.2
18.3
0.55
0.118
17.93
-1.29
-0.51
I
27.4
24.2
24.3
1.82
0.378
25.30
1.26
2.04
IC
24.7
23.7
24.6
0.55
0.118
24.33
0.92
1.71
ID
24.0
23.3
22.7
0.65
0.154
23.33
0.58
1.36
J
20.6
20.4
20.7
015
0.035
20.57
-0.38
0.40
JE
> V < „ '
li.
X J ^ •<>>
>i < «
JG
21.9
20.7
20.0
0.96
0.224
20.87
-0.28
0.51
JM
20.0
23.0
24.0
2.08
0.473
22.33
0.23
1.02
JN
20.5
21.6
23.0
1.25
0.295
21.70
0.01
0.80
JP
20.2
18.8
16.7
1.76
0.413
18.57
-1.07
-0.29
JQ
20.3
24.5
23.2
2.15
0.496
22.67
0.35
1.13
JS
20.5
221
21.9
0.87
°. 189
21.50
-0.06
0.73
JY
I i "
IBBRPiS
K
26.2
24.0
251
1.10
0.260
25.10
1.19
1.97
KC
SSfBSIfe
"*¦-5 JVW° V
v V
KE
26.2
24.6
25.5
0.80
0.189
25.43
1.30
2.09
KH
24.2
20.9
22.2
1.66
0.390
22.43
0.27
1.05
KT
12.0
10.0
8.0
2.00
0.473
10.00
-4.04
-3.26 JL
KX
23.0
20.0
21.0
1.53
0.354
21.33
-0.12
0.67
L
27.6
27.6
27.3
0.17
0.035
27.50
2.02
2.81
LF
21.0
17.0
24.0
3.51
0.827
20.67
-0.35
0.44
LL
22.2
20.4
19.2
1.51
. 0.354
20.60
-0.37
0.42
• =
No data submitted
TAG SYMBOLS
ft a Above control limit
L0-
Insufficient data
x =
Determined to be an outlier
il s Below control limit i
-------
C(
^
14 /18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
r
Gross Beta
-
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LR
21.1
18.8
21.9
1.61
0.366
20.60
-0.37
0.42
LT
23.4
26.0
24.6
1.30
0.307
24.67
1.04
1.82
M
18.0
15.0
21.0
3.00
0.709
18.00
-1.27
-0.48
MA
12.0
15.0
15.0
1.73
0.354
14.00
-2.66
-1.87
MF
21.5
20.6
22.9
1.16
0.272
21.67
0.00
0.79
MQ
13.0
15.0
16.0
1.53
0.354
14.67
-2.42
-1.64
MV
22.7
21.7
17.7
2.65
0.591
20.70
-0.33
0.45
MX
1660.1
1210.7
1402.2
220.30
97.967
1421.00
484.74
485.53
::X-; :
MY
lllliill
•' V
N
21.0
19.0
20.0
1.00
0.236
20.00
-0.58
0.21
NA
26.0
24.5
22.6
1.70
0.402
24.37
0.94
1.72
NB
91.7
98.3
96.0
3.26
0.768
94.97
25.39
26.18
X
NE
fiilitiif?
•
NJ
29.7
29.6
29.5
0.10
0.024
29.60
2.75
3.53
11
NK
i V -
• , -
NO
19.7
23.1
25.7
3.01
0.709
22.83
0.40
1.19
NP
35.6
' 42.4
31.8
5.37':;
1.480
36.60
5.17
5.96
' 'X':'
NT
21.9
21.1
21.5
0.40
0.095
21.50
-0.06
0.73
O
20.8
22.3
20.5
0.96
0.213
21.20
-0.16
0.62
OA
23.0
20.0
22.0
1.53
0.354
21.67
0.00
0.79
OB
26.2
22.4
22.4
2.19
0.449
23.67
0.69
1.48
OF
15.5
19.4
18.7
2.08
0.461
17.87
-1.32
-0.53
OS
22.0
23.0
23.0
0.58
0.118
22.67
0.35
1.13
OX
19.6
20.0
20.2
0.31
0.071
19.93
-0.60
0.18
OY
16.0
21.6
20.0
2.88
0.662
19.20
-0.85
-0.07
OZ
13.4
17.7
15.9
2.16
0.508
15.67
-2.08
-1.29
P
22.8
22.8
21.0
1.04
0.213
22.20
0.18
0.97
PB
20.8
20.2
21.8
0.81
0.189
20.93
-0.25
0.53
PG
24.4
21.2
23.6
1.67
0.378
23.07
0.48
1.27
PM
22.0
23.0
23.0
0.58
0.118
22.67
0.35
1.13
PQ
21.6
21.6
20.0
0.92
0.189
21.07
-0.21
0.58
PR
24.0
22.0
22.0
1.15
0.236
22.67
0.35
1.13
PV
25.5
21.4
26.5
2.70
0.602
24.47
0.97
1.76
Q
18.0
21.6
23.4
2.75
0.638
21.00
-0.23
0.55
QC
16.9
16.5
16.7
0.20
0.047
16.70
-1.72
-0.94
QP
19.0
18.0
17.5
0.76
0.177
18.17
-1.21
-0.43
QQ
24.6
24.7
24.7
0.06
0.012
24.67
1.04
1.82
QT
22.6
19.9
27.4
3.80
0.886
23.30
0.57
1.35
QU
17.2
20.0
22.8
2.80
0.662
20.00
-0.58
0.21
QW
38.2
41.7
, 40.9
1.83
0;413
40.27
6.44
7.23
¦
' X A
QX
27.4
27.4
27.4
0.01
0.000
27.40
1.99
2.77
QZ
20.8
21.0
20.5
0.25
0.059
20.77
-0.31
0.47
R
21.0
24.0
25.8
2.42
0.567
23.60
0.67
1.45
RB
16.2
17.0
16.5
0.40
0.095
16.57
-1.77
-0.98
RD
24.0
17.0
22.0
3.61
0.827
21.00
-0.23
0.55
• =
No data submitted
TAG SYMBOLS
tl = Above control limit
in
IS
—')
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
—. /J
-------
A
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 15/18
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tajr
RE
24.8
28.2
27.9
1.88
0.402
26.97
1.84
2.62
RG
190
19.3
20.7
0.91.
0.201
19.67
-0.69
0.09
RH
. •-
RI
24.3
27.9
22.1
2.93
0.685
24.77
1.07
1.86
RJ
7\': ^ '
RR
30.6
29.4
30.6
0.69
0.142
30.20
2.96
3.74
tr
RU
¦v ; ¦'#'
•
RV
28.0
29.0
27.0
1.00
0.236
28.00
2.19
2.98
RW
25.7
21.0
23.4
2.35
0.555
23.37
0.59
1.37
RZ
26.3
27.2
26.1
0.59
0.130
26.53
1.69
2.47
S
23.3
24.6
22.7
0.97
0.224
23.53
0.65
1.43
sc
16.3
21.9
22.7
3.49
0.756
20.30
-0.47
0.31
SD
14.4
14.7
12.8
1.02
0.224
13.97
-2.67
-1.88
SF
17.0
19.4
19.6
1.45
0.307
18.67
-1.04
-0.25
SI
17.7
17.9
18.1
0.20
0.047
17.90
-1.30
-0.52
SL
24.5
25.7
23.5
1.10
0.260
24.57
1.00
1.79
SM
24.4
23.2
23.3
0.67
0.142
23.63
0.68
1.47
SN
22.9
15.9
19.9
3.51
0.827
19.57
-0.73
0.06
SO
19.7
19.4
19.5
0.15
0.035
19.53
-0.74
0.05
SR
24.0
27.0
25.0
1.53
0.354
25.33
1.27
2.06
SS
21.9
19.8
21.5
1.12
0.248
21.07
-0.21
0.58
SU
17.9
19.1
18.2
0.62
0.142
18.40
-1.13
-0.35
sx
29.3
29.0
28.2
0.57
0.130
28.83
¦ 2.48 ^
3.27
it
sz
' J - - '
" 'v\Av\*y 11
' v^N'Vs'
•-
T
21.9
18.9
21.3
1.59
0.354
20.70
-0.33
0.45
TC
'
,v- ^ ^
^ ' V <•* ' ' •*V
•-'
TD
9.9
12.3
13-5
1.83
0.425
11.90
-3.38
-2.60
¦ TE
•r.v". .. A •
mtsiisgm
ffgiiflSil
lillBliifi
' -
>
•
TG
24.0
26.0
21.5
2.25
0.532
23.83
0.75
1.54
TH
19.6
18.0
18.2
0.87
0.189
18.60
-1.06
-0.28
TI
23.8
24.3
23.3
0.50
0.118
23.80
0.74
1.52
TL
20.5
21.6
23.2
1.36
0.319
21.77
0.03
0.82
TN
26.6
26.9
27.0
0.21
0.047
26.83
1.79
2.57
TO
36.2
31.6
26.3
4.95
1.323
31.37
3.36
4.15
tr
TQ
18.3
13.4
15.9
2.45
0.579
15.87
-2.01
-1.22
TW
10.5
10.3
15.8
3.12
0.650
12.20
-3.28
-2.49
TY
21.0
21.5
22.6
0.82
0.189
21.70
0.01
0.80
U
23.6
22.8
22.7
0.49
0.106
23.03
0.47
1.26
UA
15.0
16.0
17.0
1.00
0.236
16.00
-1.96
-1.18
UE
21.7
22.2
22.1
0.26
0.059
22.00
0.12
0.90
UN
34.8
23.0
24.3
6.47
1.750
27.37
1.97
2.76
UP
23.1
18.8
23.9
2.74
0.602
21.93
0.09
0.88
UQ
20.8
23.0
20.4
1.40
0.307
21,40
-0.09
0.69
UW
28.6
20.2
26.4
4.36
0.992
25.07
1.18
1.96
UY
20.4
20.1
21.4
0.68
0.154
20.63
-0.36
0.43
• 3
No data submitted
TAG SYMBOLS
ft s Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
li s Below control limit
-------
ft =
16/18
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
^
Gross Beta
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average
(grand-avg) (known) Tag
VA
22.0
20.5
17.9 2.07
0.484
20.13
-0.53 0.25
VC
glSiiiiSBMSmsmsmmrnm
V
VG
17.9
18.3
18.9 0.50
0.118
18.37
-1.14 -0.36
VH
31.4
27.1
26.1 2.82
0.626
28.20
2.26 3.05
VI
12.3
12.4
12.8 0.26
0.059
12.50
-3.18 -2.39
VJ
26.9
27.0
22.3 2.69
0.555
25.40
1.29 2.08
VO
(III
ill®!
•
VT
26.4
27.0
26.7 0.30
0.071
26.70
1.74 2.53
W
21.7
21.5
19.3 1.33
0.284
20.83
-0.29 0.50
WD
11®!!
•s /, ,
i®
WE
22.3
21.7
20.0 1.19
0.272
21.33
-0.12 0.67
WF
1700
fill
169.3
162.2 4.32
0.921
167.17
50.40 61.19
x --;
WH
10.7
9.3
9.9 0.70
0.165
9.97
-4.05 -3.27
}
WJ
:IS3B1
fill
•
WK
ti§§g
i||
r*vvf-
WN
IplH
iiii
X-,' >__,s .#rjy y ^ X X-
IIS
¦»
ggli
lift;
SSI
llflt
{t ¦'
X
17.8
1^.9
17.3 0.32
o:o7i
17.67
-1.39 -0.60
Data sorted by Laboratory Averaf
fe
Average
Taf?
Lab
Average
Tag
Lab
Average Tag
Lab
9.97
WH
17.93
HP
20.30
AK
10.00
KT
18.00
M
20.50
DZ
11.90
TD
18.03
GT
20.57
J
12.20
TW
18.17
QP
20.60
LR
12.50
VI
18.37
VG
20.60
LL
13.37
AE
18.40
SU
20.63
UY
13.97
SD
18.50
BC
20.67
LF
14.00
MA
18.57
JP
20.67
EL
14.67
MQ
18.60
TH
20.70
T
15.67
OZ
18.67
SF
20.70
MV
15.73
AZ
18.93
DS
20.77
QZ
15.87
TQ
19.20
OY
20.83
W
16.00
UA
19.33
FZ
20.83
BO
16.00
AN
19.33
CJ
20.87
JG
16.20
DE
19.47
GQ
20.93
PB
16.57
RB
19.53
SO
21.00
RD
16.70
QC
19.57
SN
21.00
Q
16.80
CA
19.60
AL
21.00
AU
17.10
CO
19.67
RG
21.03
HL
17.33
BG
19.93
OX
21.07
SS
17.50
CG
20.00
QU
21.07
PQ
17.67
X
20.00
N
21.20
0
17.67
FL
20.10
BA
21.33
WE
17.87
OF
20.13
VA
21.33
KX
17.90
SI
20.30
SC
21.33
DO
• = No data submitted
TAG SYMBOLS
It 2 Above control limit
0 s Insufficient data
VJ*
x s Determined to be an outlier
J1 = Below control limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 17 / 18 I
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
21.40
UQ
22.87
EB
25.00
HI
21.43
BH
23.03
U
25.07
UW
21.50
NT
23.07
PG
25.10
K
21.50
JS
23.13
CS
25.30
I
21.53
BN
23.27
CQ
. 25.33
SR
21.53
AP
23.30
QT
25.40
VJ
21.60
AH
23.33
ID
25.43
KE
21.67
OA
23.37
RW
25.93
CK
21.67
MF
23.37
DM
26.23
AW
21.70
TY
23.37
CX
26.53
RZ
21.70
JN
23.37
DB
26.63
EN
21.77
TL
23.53
S
26.70
VT
21.83
CE
23.60
R
26.77
BM
21.87
BL
23.63
- SM
26.83
TN
21.93
UP
23.67
OB
26.97
RE
21.93
C
23.80
TI
27.33
CP
22.00
UE
23.83
TG
27.37
UN
22.03
DH
24.00
HK
27.40
QX
22.20
P
24.00
BI
27.50
•
L
22.20
EV
24.03
EW
28.00
RV
22.33
JM
24.17
AJ
28.20
It
VH
22.33
GZ
24.33
IC
28.83
It
sx
22.33
GE
24.33
EO
29.60
It
NJ
22.33
DR
24.33
DD
30.20
ft
RR
22.43
KH
24.33
-
AF
31.37
ft
TO
22.57
BB
24.37
NA
31.57
It
DI
22.63
A
24.40
BK
32.60
It
AR
22.67
PR
24.47
PV
35.73
X
FJ
22.67
PM
24.53
D
36.60
X
NP
22.67
OS
24.57
SL
37.17
X
FN
22.67
JQ
24.67
QQ
40.27
X
QW
22.67
FF
24.67
LT
94.97
X
NB
22.67
DT
24.77
RI
167.17
X
WF
22.83
NO
24.87
E
1421.00
X
MX
% responding labs
10-
Frequency distribution
T
T
Jf.ll
.iJllflhtf
0 +2
imMMj
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
• a No data submitted
0 3 Insufficient data
TAG SYMBOLS
x a Determined to be an outlier
It a Above control limit
<11 3 Below control limit
-------
18 /18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Beta
% responding labs Frequency distribution
10-
¦Jl.h
llfll
ma M i
|M~ ~T " ~,
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
United States Office of Research and EPA 600/R-95/147
Environmental Protection Development September 1995
Agency Washington, DC 20460
s»EPA Tritium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the August 4, 1995 Data
RECEIVED
1
SEP 271995
FMSI LV LIBKAKT
0593RSB95 r~-i4T
-------
Tritium in Water
Performance Evaluation Study
August 4, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Radiation Sciences Branch (CRD-LV)
Performance Evaluation Study for Tritium in Water; August 4,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take ajfew minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Tritium in Water, 4-Aug-1995
1/9
The'following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples .
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no :
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after .
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory ;
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a: symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding .
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis;
-------
2/9
CRD-LV Performance Evaluation: Tritium in Water, 4-Aug-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, CRD-LV, 702/798-2104.
-------
CRD-LV Performance Evaluation: Tritium in Water, 4-Aug-1995
3/9
Tritium Statistical Summary 178 Participants
The known value of this nuclide is 4872.0 pCi/1 with an expected precision of487.0; the control limit*
are 4027.1 to 5716.9; the warning regions are 4027.1 to 4308.3 and 5435.7 to 5716.9
18(10.1 %) Failed to respond
11 (6.2 %) Outliers '
6(3.4 %) Out of control'
but not an outlier
Statistic
/•
¦¦¦ » !
, 131(73.6 %) Within all limits
Respondents
12(6.7 %) In warning zone
but within control
;
Non-outliers
Mean '
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
4892.32
1949.41
3800194.25
39.85
0.42
0.01
4780.17
-1.88
-0.05
Grand Avg 4788.09
374.05
139910.75
7.81
-1.72
-0.22
4780.33
-1.88
-0.25
17(10.6 %) More than 3 norm. S.D.
12(7.5 %) Between 2 and 3 norm. S.D.
; 87(54.4 %) Within 1 norm. S.D.
of known value
44(27.5 %) Between 1 and 2 norm. S-D.
-------
4/9
CRD-LV Performance Evaluation
: Tritium in Water,
4-Aug-1995
X
Tritium
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
4860.0
5030.0
4960.0
85.45
0.206
4950.00
0.58
0.28
AE
4917.0
4964.0
4957.0
25.34
0.057
4946.00
0.56
0.26
AF
5150.0
4974.0
4958.0
106.54
0.233
5027-33
0.85
0.55
AH
4560.0
4540.0
4470.0
47.26
0.109
4523J3_
-0.94
-1.24 ;
AI
;«K?§9
IISIIHH1
•
AJ
4885.0
4906X)
4803.0
54.44
0.125
4864.67
0.27 7
-0.03
AK
5145.0
5155.0
5160.0
7.57
0.018
5153.33
1.30
1.00
AP
4684.0
4499.0
4565.0
93.76
0.224
4582.67
-0.73
-1.03
AU
4900.0
4900.0
5000.0
57.74
0.121
4933.33
0.52
0.22
AW
4587.0
4581.0
4552.0
18.74
0.042
4573.33
-0.76
-1.06
AY
4835.0
4613.0
4618.0
126.76
0.269
4688.67
. -0.35
-0.65
AZ
4457.0
4824.0
4547.0
191.28
0.445
4609.33
-0.64
-0.93
BA
5238.0
5176.0
5429.0
131.87
0.307
5281.00
1.75
1.45
BB
4815.0
4965.0
5000.0
98.27
0.224
4926.67
0.49
0.19
BC
4826.0
4908.0
5075.0
126.90
0.302
4936.33
0.53
0.23
BL
4808.0
4764.0
4668.0
71.59
0.170
4746.67
-0.15
-0.45
|fp$
BO
4590.0
4580.0
4600.0
10.00
0.024
4590.00
-0.70
-1.00
"bW
$*; . -> --VV*::* ''
gnii
'.S
£<::. \ \ ' S<*'AS'
c
4027.0
4285.0
4700.0
339.54
0.816
4337.33
-1.60
-1.90
CA
4830.0
4735.0
4756.0
49.92
0.115
4773.67
-0.05
-0.35
CE
4860.0
4980.0
4760.0
110.15
0.267
4866.67
0.28
-0.02
CG
3893.0
3502.0
3802.0
204.60
0.474
3732.33
-3.75
-4.05 U
CJ
4700.0
4900.0
5000.0
152.75
0.364
4866.67
0.28
-0.02
CK
5062.0
5052.0
4918.0
80.41
0.175
5010.67
0.79
0.49
CO
4570.0
4760.0
4660.0
95.04
0.230
4663.33
-0.44
-0.74
CP
4750.0
4720.0
4410.0
188.24
0.412
4626.67
-0.57
-0.87
CQ
4860.0
4440.0
4440.0
242.49
0.509
4580.00
-0.74
-1.04
cs
4500.0
4770.0
4800.0
165.23
0.364
4690.00
-0.35
-0.65
cx
5110.0
4980.0 1
5510.0
276.22
0.643
5200.00
1.46
1.17
D
4707.0
4564.0
4773.0
106.84
0.253
4681.33
-0.38
-0.68
DD
4970.0
4920.0
4880.0
45.11
0.i09
4923.33
0.48
0.18
DE
4891.0
4894.0
4918.0
14.78
0.033
4901.00
0.40
0.10
DG
4480.0
4570.0
4760.0
142.95
0.340
4603.33
-0.66
-0.96
DH
4859.0
5084.0
5034.0
118.15
0.273
4992.33
0.73
0.43
DI
4584.0
4509.0
4670.0
80.56
0.195
4587.67
-0.71
-1.01
DL
4889.0
4865.0
5095.0
126.43
0.279
4949.67
0.57
0.28
DM
4850.0
4820.0
,4800.0
25.21
0.061
4823.33
0.13
-0.17
DR
4824.0
4800.0
4814.0
12.14
0.029
4812.67
0.09
-0.21
DT
•- > >«.<• •*».. ~
ipiiip
Jlplll§P||Si|;f
fiPfPttNSii
fpi§f|lipppf!
"< ?¦ ^ ? — <« -
E
5269.0
5296.0
5141.0
82.80
0.188
5235.33
1.59
1.29
EA
4855.0
4794.0
4855.0
35.23
0.074
4834.67
0.17
-0.13
EB
4700.0
4940.0
4760.0
124.90
0.291
4800.00
0.04
-0.26
EL
5071.0
5038.0
5354.0
173.70
0.383
5154.33
1.30
1.00
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
in
Si
V
Insufficient data
X s
Determined to be an outlier -
11 = Below control limit
-------
CRD-LV Performance Evaluation: Tritium in Water, 4-Aug-1995 5/9
f 1 '' . ¦ i ' M —i ¦ , • , _
Tritium
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EN
4828.0
4406.0
4797.0
235.20
0.512
4677.00
-0.40
-0.69
EW
4414.0
4998.0
4977.0
331.28
0.708
4796.33
0.03
-0.27
EX
FJ
5037.0
4888.0
4969.0
74.59
"
0.181
4964.67
¦¦ill
0.63
0.33
FL
. 4860.0
4873.0
4637.0
132.66
0.286
4790.00
-0.29 ""
FU
5470.0
5984.0
5219.0
389.96
0.928
5557.67
2.74
2.44
FZ
2700 0
2300.0
" 2700 0
230,94
0.485
" 25^6.67
-7.90
"lyA^V'-f^wwy.'.v ••
-8.20 x
GE
4867.0
4819.0
5120.0
161.71
0.365
4935.33
0.52
0.23
GQ
4180.0
4210.0
4260.0
40.41
0.097
4216.67
-2.03
-2.33
HI
4544.0
4416.0
4474.0
64.09
0.155
4478.00
-1.10
-1.40
HJ
HK
HP
5640.0
4860.0
5710.0
504o!o
5550.0
5150.0
80.21
lIBilllll
146.41
0.194
0.352
5633.33 3.01
5016.67 0.81
2.71
0.51
HR
5113.0
5086.0
5113.0
15.62
0.033
5104.00
1.12
0.83
I
4819.0
4709.0
4639.0
90.74
0.218
4722.33
-0.23
-0.53
IC
4926.0
4836.0
4778.0
74.57
0.180
4846.67
0.21
-0.09
J
4815.0
4910.0
4821.0
53.21
0.115
4848.67
0.22
-0.08
JE
5236.0
4744.0
4990.0
246.00
0.597
4990.00
0.72
0.42
JI
4560.0
4700.0
4880.0
160.42
0.388
4713.33
-0.27
-0.56
JK
4985.0
4878.0
4918.0
54.06
0.130
4927.00
0.49
0.20
JM
4252.0
4386.0
4443.0
98.05
0.232
4360.33
-1.52
-1.82
JP
4767.0
4733.0
4771.0
20.84
0.046
4757.00
-0.11
-0.41
JR
3206.0
32i8.0
> 3201.0
8;77
0.021
3208.33
!TC -5.62 -
*5.92 x
JS
4930.0
5110.0
5130.0
110.16
0.243
5056.67
0.96
0.66
JY
4820.0
5130.0
4800.0
185.03
0.400
4916.67
0.46
0.16
K
4138.0
3912.0
3912.0
130.48
0.274
3987.33
-2.85
-3.15 U
KH
4798.0
4805.0
4738.0
36.82
0.081
4780.33
-0.03
-0.33
KX
4770.0
4670.0
4590.0
90.18
0.218
4676.67
-0.40
-0.69
L
4135.0
4135.0
4248.0
65.25
0.137
4172.67
-2.19
-2.49
LE
4630.0
4540.0
4540.0
51.96
0.109
4570.00
-0.78
-1.07
LF
4900.0
5000.0
4900.0
57.74
0.121
4933.33
0.52
0.22
LR
4710.0
4565.0
4639.0
72.51
0.176
4638.00
-0.53
-0.83
LT
4704.0
5093.0
3902.0
607.32
1.847
4566.33
-0.79
-1.09
M
4800.0
4700.0
4900.0
100.00
0.243
4800.00
0.04
-0.26
MA
4461.0
4498.0
4661.0
106.41
0.243
4540.00
-0.88
-1.18
ML
6525:0
6825.0
A 6748.0
' 155.82
0^364
6699.3&"
6.80
V**> ' ^ J" >"0 * <
6.50 x
MQ
4660.0
4420.0
4510.0
121.24
0.291
4530.00
-0.92
-1.22
MT
4864.0
4757.0
4746.0
65.20
0.143
4789.00
0.00
-0.30l
MV
3896.0
4216.0
4059.0
160.01
0.388
4057.00
-2.60
-2^90
N
4657.0
4586.0
4663.0
42.84
0.093
4635.33
-0.54
-0.84
NB
W V ^ .j,
7.0,
9.0
100 "
•*' 1.53
->.004
"> 8.67/^' x;^66, -
NH
4520.0
4605.0
4689.0
84.51
0.205
4604.67
-0.65
-0.95
NJ
4595.0
4567.0
4608.0
20.98
0.050
4590.00
-0.70
-1.00
NO
3177i0 -
3360.0
3643.0
234:78
0.566
. 3393.33
. AJ%
>4.96
-5.26 x
NP
5242.0
5516.0
4949.0
283.56
0.688
5235^67
1.59
1.29 "
• = No data submitted TAG SYMBOLS ft = Above control limit
0 a Insufficient data x = Determined to be an outlier II g Below control limit y
-------
6/9
CRD-LV Performance Evaluation: Tritium in Water,
4-Aug-1995
Tritium
>
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
O
4699.0
4744.0
4528.0
113.96
0.262
4657.00
-0.47
-0.76
OA
4200.0
4500.0
5200.0
513.16
1.405
4633.33
-0.55
-0.85
OK
5246.0
5111.0
5364.0
126.60
0.307
5240.33
1.61
1.31
OL
5426.0
4547.0
4769.0
457.09
1.126
4914.00
0.45
0.15
OX
4878.0
4710.0
4748.0
88.10
0.204
4778.67
-0.03
-0.33
PB
4924.0
4865.0
4932.0
36.59
0.081
4907.00
0.42
0.12
PE
4392.0
4259.0
4568.0
155.00
0.375
4406.33
-1.36
-1.66
PI
mmmmmmw®-
smwiiii
mmmsmmmz>
flllipppi
•
PJ
Slil*
MMHi
• ;
PM
4821.0
4893.0
4826.0
40.22
0.087
4846.67
0.21
-0.09
PQ
4679.0
' 5032.0
4606.0
227.82
0.517
4772.33
-0.06
-0.35
PV
5881.0
5598.0
4760.0
582.95
1.685
5413.00
2.22
1.92
Q
4727.0
4542.0
4574.0
98.87
0.224
4614.33
-0.62
-0.92
QC
4655.0
4875.0
4758.0
110.08
0.267
4762.67
-0.09
-0.39
QD
4962.0
4934.0
5019.0
43.31
0.103
4971.67
0.65
0.35
QI
llllplltltfl
(1113111
QJ
4800.0
4800.0
4600.0
115.47
0.243
4733.33
-0.19
-0.49
QM
3741.0
3842.0
3821.0
53.30
0.122
3801.33
-3.51
-3.81
u
QP
5654.0
5708.0
5740.0
43.49
0.104
5700.67
3.25
2.95
QQ
5037.0
5191.0
5345.0
154.00
0.374
5191.00
1.43
1.13
QT
5367.0
5237.0
5365.0
74.47
0.158
5323.00
1.90
1.60
QU
4162.0
4577.0
4761.0
306.84
0.727
4500.00
-1.02
-1.32
QW
4436.0
4456.0
4665.0
126.83
0.278
4519.00
-0.96
-1.26
QX
5887.0
5708.0
5900.0
107.29
0.233
5831.67
3.71
3.41
a
QZ
4736.0
4686.0
4858.0
88.48
0.209
4760.00
-0-1°
-0.40
R
I1WBIBP
fwzMmmm
;:;Tv
RB
4520.0
4054.0
4059.0
267.61
0.565
4211.00
-2.05
-2.35
RH
3949.0
4042.0
4025.0
49.53
0.113
4005.33
-2.78
-3.08
RL
;§ :)f§
< J
mmmmm
littaiifsi
liiilill!
lllill
•
RO
5251X)
4624.0
5161.0
339.02
0.760
5012.00
0.80
0.50
RR
4650.0
4670.0
4640.0
15.28
0.036
4653.33
-0.48
-0.78
RU
4468.0
4523.0
4468.0
31.75
0.067
4486.33
-1.07
-1.37
RV
i#gl!iig#
iPili!
llllplil
RX
4033.0
4225.0
4321.0
146.64
0.349
4193.00
-2.12
-2.41
S
4800.0
4861.0
4869.0
37.73
0.084
4843.33
0.20
-0.10
sc
4133.0
4460.0
4356.0
167.07
0.397
4316.33
-1.68
-1.98
SD
4875.0
4629.0
4752.0
123.00
0.298
4752.00
-0.13
-0.43
SF
4527.0
4670.0
4773.0
123.54
0.298
4656.67
-0.47
-0.77
SI
4420.0
4450.0
4510.0
45.83
0.109
4460.00
-1.17
-1.47
-
SM
5110.0
4640.0
4560.0
297.16
0.667
4770.00
-0.06
-0.36
SN
4506.0
4455.0
4476.0
25.62
0.062
4479.00
-1.10
-1.40
SS
5034.0
5026.0
4982.0
28.04
0.063
5014.00
0.80
0.51
ST
4920.0
4850.0
4870.0
36.06
0.085
4880.00
0.33
0.03
su
48.0
48.0
47.0
0.58
0.001
47.67
-16.86
-17.16
sz
4683.0
4628.0
4729.0
50.58
0.122
4680.00
-0.38
-0.68
• =
No data submitted
\
TAG SYMBOLS
It s Above control limit
10 =
Insufficient data
x =
Determined to be an outlier
•U = Below control limit J
-------
CRD-LV Performance Evaluation: Tritium in Water, 4-Aug-1995 7/9
Tritium
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tnjr
T
4500.0
4500.0
4500.0
0.00
0.000
4500.00
-1.02
-1.32
TC
5126.0
5339.0
5596.0
235.35
0.570
5353.67
2.01
1.71
TD
24300.0
23900.0
31100.0
4244.21
17.115
26233.33
76.27
75.97
- X
TE
llillll?
it
~7 \ '¦
*
12920.0
11300.0
12300.0
817.39
2.838
12173.33
rt
26.27
25.97
¦ -si: •
';>< -r
TG
5136.0
5445.0
5242.0
157.02
0.375
5274.33
1.73
1.43
TH
3951.0
4189.0
' 4174.0
133.29
0.289
4104.67
-2.43
-2.73
TI
5230.0
5560.0
4980.0
290.92
0.703
5256.67
1.67
1.37
TL
3863.0
3343.0
3528.0
263.58
0.631
3578.00
-4.30
-4.60
U -
TN
5092.0
5134.0
5000.0
68.55
0.163
5075.33
1.02
0.72
TQ
5390.0
5120.0
5660.0
270.00
0.655
5390.00
2.14
1.84
Siiliil
liiiSSiiiis
^MPWi
" :s ¦¦¦-
3;?
TX
5185!o
5110.0
5118.0
41.18
0.091
5137.67
li4
0.94
u
4850.0
4860.0
4630.0
130.00
0.279
4780.00
-0.03
-0.33
ire
6096.0
6265.0
5927.0
169.00
0410
6096.00
v^ ffVK-y * ¦¦ ^ $
4.65
Mr* y»*
, 4.35
x:
UE
4320.0
4330.0
4300.0
15.28
0.036
4316.67
-1.68
-1.98
UK
5010.0
5060.0
5040.0
25.21
0.061
5036.67
0.88
0.59
.
UN
5925.0
4932.0
5120.0
527.48
1.389
5325.67
1.91
1.61
uo
4698.0
4892.0
5374.0
348.07
0.820
4988.00
0.71
0.41
UP
5067.0
3855.0
4489.0
606.22
1.895
4470.33
-1.13
-1.43
fUT-
s ^ ^ ^
<5 * >%/ '* "'
- ~-;ZXK s f * -
uw
5325.0
5420.0
5428.0
57.29
0.125
5391.00
2.14
1.85
ux
4948.0
4708.0
4883.0
124.13
0.291
4846.33
0.21
-0.09
UY
4436.0
4476.0
4483.0
25.35
0.057
4465.00
-1.15
-1.45
VA
5358.0
4673.0
4281.0
545.10
1.583
4770.67
-0.06
-0.36
¦
VC
5082.0
5035.0
5032.0
28.07
0.061
5049.67
0.93
0.63
VE
5260.0
4660.0
4840.0
307.90
0.728
4920.00
0.47
0.17
VG
4650.0
4570.0
4610.0
40.00
0.097
4610.00
-0.63
-0.93
VI
6640.0 7900.0
, 15730.0
! 1089:69
4.108
6756.67
7.00
6.70
X i-
'
VM
61260
5079.0
5034.0
46.00
0.112
507967
1.04
0.74
VN
N s' - V
*¦»' % ¦ 'v'f.
* t >s ' '
•
VP
4620.0
5070.0
4880.0
225.91
0.546
4856.67
0.24
-0.05
VR
5532.0
4683.0
4767.0
467.81
1.057
4994.00
0.73
0.43
VW
4392.0
5135.0
4595.0
384.03
0.901
4707.33
-0.29
-0.59
VZ
4682.0
4553.0
4424.0
129.00
0.313.
4553.00
-0.84
-1.13
W
4391.0
4004.0
4163.0
194.53
0.469
4186.00
-2.14
-2.44
WD
/¦ V'Vl""' ' *4 / -X """If-v wv
2141.0 2115.0
J 2232.0
6i44;
; 0.142
f 'W 'C>s
2162.67
","*C -r-yx
-9.34
7-9:64 7
X ^
WF
4325.0
4257.0
4236.0
46.53
0.108
4272.67
-1.83
-2.13
WH
5351.0
5604.0
5241.0
186.13
0.440
5398.67
2.17
1®1
WI
Iggglg
viJ V'ji:
WJ
4696.0
4714.0
4545.0
92.81
0.205
4651.67
-0.49
-0.78
WL
6010.0
5930.0
4010.0
1132.31
3.716
5316.67
1.88
1.58
X
5599.0
5967.0
5488.0
250.73
0.581
5684.67
3.19
2.89
• ~
No data submitted
TAG SYMBOLS
It s Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
—
-------
- -
8/9 CRD-LV Performance Evaluation: Tritium in Water, 4-Aug-1995
I
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average Taj? Lab
Average
Tag
Lab
8.67
X
NB
4590.00
BO
4834.67
EA
47.67
- X
SU
4603,33
DG
4843.33
S
2162.67
X
WD
4604.67
NH
4846.33
ux
2566.67
X
FZ
4609.33
AZ
4846.67
PM
3208.33
X
JR
4610.00
VG
4846.67
IC
3393.33
X
NO
4614.33
Q
4848.67 -
J
3578.00
4
TL
4626.67
CP
4856.67
VP
3732.33
U
CG
4633.33
OA
4864.67
AJ
3801.33
u
QM
4635.33
N
4866.67
CJ
3987.33
K
4638.00
LR
4866.67
CE
4005.33
.r
RH
4651.67
WJ
4880.00
ST
4057.00
MV
4653.33
RR
4901.00
DE
4104.67
-
TH
4656.67
SF
4907.00
PB
4172.67
-
L
4657.00
O
4914.00
OL
4186.00
W
4663,33
CO
4916.67
JY
4193.00
RX
4676.67
KX
4920.00
VE
4211.00
RB
4677.00
EN
4923.33
DD
4216.67
GQ
4680.00
SZ
4926.67
"
BB
4272.67
WF
4681.33
D
4927.00
JK
4316.33
sc
4688.67
AY
4933.33
LF
4316.67
UE
4690.00
CS
4933.33
AU
4337.33
c
4707.33
VW
4935.33
GE
4360.33
JM
4713.33
JI
4936.33
BC
4406.33
PE
4722.33
I
4946.00
AE
4460.00
SI
4733.33
QJ
4949.67
DL
4465.00
UY
4746.67
BL
4950.00
A
4470.33
UP
4752.00
SD
4964.67
EX
4478.00
HI
4757.00
JP
4971.67
QD
4479.00
SN
4760.00
QZ
4988.00
UO
4486.33
RU
4762.67
QC
4990.00
JE
4500.00
T
4770.00
SM
4992.33
DH
4500.00
QU
4770.67
VA
4994.00
VR
4519.00
QW
4772.33
PQ
5010.67
CK
4523.33
AH
4773.67
CA
5012.00
RO
4530.00
MQ
4778.67
OX
5014.00
ss
4540.00
MA
4780.00
U
5016.67
HP
4553.00
VZ
4780.33
KH
5027.33
AF
4566.33
LT
4789.00
MT
5036.67
UK
4570.00
LE
4790.00
FL
5049.67
VC
4573.33
AW
4796.33
EW
5056.67 ,
JS
4580.00
CQ
4800.00
M
5075.33
TN
4582.67
AP
4800.00
EB
5079.67
VM
4587.67
DI
4812.67
DR
5104.00
UK
4590.00
NJ
4823.33
DM
5137.67
TX
• = No data submitted TAG SYMBOLS 1t.= Above control limit
0 = Inaufficient data x = Determined to be an outlier I = Below control limit
-------
CRD-LV Performance Evaluation: Tritium in Water, 4-Aug-1995
9/9
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5153.33
AK
5281.00
BA
5557.67
FU
5154.33
EL
5316.67
¦
WL
5633.33
HJ
5191.00
QQ
5323.00
QT
5684.67
X
5200.00
cx
5325.67
UN
5700.67
QP
5235.33
E
5353.67
TC
5831.67
¦tr.
QK
5235.67
NP
5390.00
TQ
6096.00
X
UC
5240.33
OK
5391.00
UW
6699.33
X
ML
5256.67
TI
5398.67
WH
6756.67
X
VI
5274.33
TG
5413.00
PV
12173.33
26233.33
X
x
TF
TD
responding labs
Frequency distribution
10-
llfl
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
-6
+6
% responding labs
10-
¦
¦¦¦¦f ¦¦¦
m+M --
-r*
+6
T
-4
-2 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
= Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-96/047A
April 1996
&EPA
Blind-A Performance
Evaluation Study
A Statistical Evaluation of
the October 17, 1995 Data
CO
W
CL
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-------
Blind-A
Performance Evaluation Study
October 17, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
\y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P n BflX Q3A7A
LAS VEGAS, NEVADA 89193-3478
f7n9/7on.9inn\
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Bllnd-A; October 17,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely, ^
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
V,
r
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
1/30
The following pages consist of separate sections for each of the nuclides in thin study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. 'Hie first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of Control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and "after
outlier removed. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value Eire
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
: .
2/30 CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
3/30
Gross Alpha Statistical Summary 189 Participants
The known value of this nuclide is 99.4 pCi/1 with an expected precision of 24.9; the control limits
are 56.2 to 142.6; the warning regions are 56.2 to 70.6 and 128.2 to 142.6
43(22.8 %) Failed to respond \
5(2.6 %) Outliers '
5(2.6 %) Out of control *
but not an outlier
Statistic
123(65.1 %) Within all limits
Respondents
" 13(6.9 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value.
Norm. dev. of median from known value
102.50 Grand Avg 101.68
25.09 17.82
629.57 317.69
24.48 17.53
3.12 2.30
0.12 0.13
101.72 101.67
2.33 2.28
0.09 0.13
10(6.8 %) More than 3 norm. S.D.
13(8.9 %) Between 2 and 3 norm. S.D.:
• 90(61.8 %) Within 1 norm. S.D.
• of known value
:
33(22.6 %) Between 1 and 2 norm. S.D.
-------
(Z =
4/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
\
Gross Alpha
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
106.6
103.0
93.0
7.05
0.323
100.87
-0.06
0.10
AE
72.6
72.2
72.2
0.23
0.009
72.33
-2.04
-1.88
AF
105.2
107.1
102.4
2.36
0.111
104.90
0.22
0.38
AH
83.1
73.5
81.1
5.06
0.228
79.23
-1.56
-1.40
AI
' " ' --V
ijilll!
AJ
99.7
86.9
105.6
9.56
0.444
97.40
-0.30
-0.14
AK
109.1
99.6
109.0
5.46
0.225
105.90
0.29
0.45
AL
118.9
113.9
122.8
4.46
0.211
118.53
1.17
1.33
AP
98.0
102.6
104.7
3.43
0.159
101.77
0.01
0.16
AR
109.4
88.4
83.6
13.72
0.612
93.80
-0.55
-0.39
AU
144.8
140.7
145.3
2.52
0.109
143.60
2.92
3.07
It
AW
110.8
109.5
111.4
0.97
0.045
110.57
0.62
0.78
AZ
23.4
25.1
22.9
1.15
0.052
23.80
-S.42
-6.26
X
BA
95.3
95.1
89.9
3.06
0.128
93.43
-0:57
-0.42
BB
113.1
101.8
107.5
5.65
0.268
107.47
0.40
0.56
BC
102.2
102.2
103.9
0.98
0.040
102.77
0.08
0.23
BG
198.0
191.5
185.0
6.50
0.308
191.50
6.25
6.41
X
BH
94.6
99.6
96.3
2.54
0.119
96.83
-0.34
-0.18
BK
144.0
133.0
105.0
_ 20.11
0.925
127.33
1.78
1.94
BL
•
X '
BM
100.9
103.1
99.3
1.91
0.090
101.10
-0.04
0.12
BN
122.3
134.4
139.1
8.67
0.399
131.93
2.10
2.26
BO
94.0
88.5
105.5
8.67
0.403
96.00
-0.40
-0.24
BS
98.6
97.1
97.0
0.90
0.038 _
97.57
-0.29
-0.13
BW
' • V.
MlllS
IMNMnil
ygiiig
•
C
109.2
102.0
94.4
7.40
0.351
101.87
0.01
0.17
CA
99.1
124.9
98.0
15.22
0.638
107.33
0.39
0.55
CE
99.5
101.4
91.2
5.42
0.242
97.37
-0.30
-0.14
CG
101.6
102.5
103.7
1.05
0.050
102.60
0.06
0.22
CJ
91.0
100.0
93.0
4.73
0.213
94.67
-0.49
-0.33
CK
106.0
105.0
110.0
2.65
0.119
107.00
0.37 _
0.53
CM
WiSSM
wmmsms
1111II1B1I
I11SII1
4 < <„
•
CO
2.5
2.5
2.6
0.06
0.002
2.53
-6.90
-6.74
X
CP
illliill
illlllill
^limi
lllllilpliiii*
•
CQ
94.8
87.4
99.3
601
0.282
93.83
-0.55
-0.39
CS
108.8
103.8
112.5
4.37
0.206
108.37
0.46
0.62
CX
95.9
96.3
97.5
0.83
0.038
96.57
-0.36
-0.20
D
102.0
100.0
103.0
1.53
0.071
101.67
0.00
0.16
DB
96.0
100.0
100.0
2.31
0.095
98.67
-0.21
-0.05
DD
107.6
106.0
103.2
2.23
0.104
105.60
0.27
0.43
DE
133.0
133.0
133.0
0.00
0.000
133.00
2.18
2.34
DG
74.8
66.3
64.4
5.54
0.247
68.50
-2.31
-2.15
DI
93.9
108.0
„..._J>0l8_
9.17
0.408
97.57
-0.29
-0.13
DL
lljlljlii
40.
lllilllll
HMMNB
•
DM
lillillll
•
• = No data submitted
TAG SYMBOLS
It a Above control limit
I 0 => Insufficient data
X 3
Determined to be an outlier
11 = Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
5/30
Gross Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
DO
$L''
' x " s , s ~ s ,
\< v -* ' ' , ' #
DS
96.6
95.7
94.1
1.27
0.059
95.47
-0.43 -0.27
DT
105.0
108.0
102.0
3.00
0.142
105.00
0.23 0.39
DZ
92.4
95.0
94.1
1.32
0.062
93.83
¦0.55 -0.39
E
112.1
112.2
109.8
1.36
0.057
111.37
0.67 0.83
EB
1.03.7
105.4
105.0
0.89
0.040
104.70
0.21 0.37
EL
:
EO
88.0
96.0
88.0
4.62
0.190
90.67
-0.77 -0.61
ER
115.0
111.0
112.0
2.08
0.095
112.67
0.76 0.92
EV
93.3
101.9
113.5
1014
0.479
102.90
0.08 0.24
EX
mwmsm
w:WFm "' '. ¦ .: ¦
FF
> X -;:v""V*s *
GQ
61.2
60.4
60.8
0.40
0.019
60.80
-2.84 -2.69
9.19 9.35 * 1 x
: GT
296.1
176.2
230.0
59.54
4.468
233.77
GZ
99.0
101.9
102.8
1.99
0.090
101.23
-0.03 0.13
HI
98.0
100.0
97.0
1.53
0.071
98.33
-0.23 -0.07
HK
115.9
118.3
117.4
1.21
0.057
117.20
1.08 1.24
HL
100.4
100.4
100.4
0.03
0.000
100.40
-0.09 0.07
HP
84.9
76.4
79.4
4.31
0.202
80.23
-1.49 -1.33
HX
v.-.V •: ^
liilSll
i
101.0
105.1
108.7
3.85
0.183
104.93
0.23
0.38
IC
107.5
98.2
110.6
6.45
0.294
105.43
0.26
0.42
ID
95.8
105.6
122.5
13.51
0.633
. 107.97
0.44
0.60
J
114.6
113.7
100.8
7.72
0.327
109.70
0.56
0.72
JE
93.0
79.3
82.0
7.26
0.325
84.77
-1.18
-1.02
JG
104.4
104.8
107.9
1.92
0.083
105.70
0.28
0.44
JN
96.6
115.9
110.6
9.97
0.458
107.70
0.42
0.58
JQ
154.1
158.2
154.0
2.40
0.100
155.43
3.74
3.90
JS
970
99.7
98.4
1.35
0.064
98.37
-0.23
-0.07
JX
''-'I---™:*
^ ^
V. s v «"<¦
f«#IK
r?H
JY
81.9
96.2
78.3
9.47
0.425
85.47
-1.13
-0.97
K
129.5
132.7
129.5
1.85
0.076
130.57
2.01
2.17
KE
173.7
; i73.i;;5
180.7
4.23
0.180
175.83
6.10
VSftsf *. \
5.32
KT
BMiillill
r>Z> v vyt
:W:%WxW.
KX
126.0
127.0
136.0
5.51
0.237
129.67
1.95
2.11
L
112.6
113.7
113.4
0.57
0.026
113.23
0.80
0.96
LF
110.0
100.0
100.0
5.77
0.237
103.33
0.11
0.27
LL
®81s£lt;:8
XX&. SW 5?:^ ; If •/• •• <•
¦w i*«p>»x;! x«wc»
11
• = No data submitted
0 s Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
ft 5 Above control limit
II 3 Below control limit
-------
(7-
6/30
v.
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Gross Alpha
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LR
99.0
83.0
102.0
10.21
0.451
94.67
-0.49
-0.33
LT
91.9
101.0
100.0
4.99
0.216
97.63
-0.28
.-0.12
M
119.0
127.0
128.0
4.93
0.213
124.67
1.60
1.76
MA
¦
MF
125.0
128.0
131.0
3.00
0142
128.00
1.83
1.99
MP
llilillil!
MQ
81.0
84.0
90.0
4.58
0.213
85.00
-1.16
-1.00
MV
84.0
82.0
86.0
2.00
0.095
84.00
-1.23
-1.07
MY
N
82.1
71.9
71.4
6.04
0.254
75.13
-1.85
-1.69
NA
87.5
106.6
86.5
1133
0.477
93.53
-0.57
-0.41
•'v
NH
>"(V t
v? • - J;
N«J
89.7
95.7
93.2
3.01
0.142
92.87
-0.61
-0.45
NK
115.0
113.0
111.0
2.00
0.095
113.00
0.79
0.95
NO
111.0
114.0
119.0
4.04
0.190
114.67
0.90
1.06
NT
96.4
94.2
95.9
1.15
0.052
95.50
-0.43
-0.27
O
124.3
128.0
135.2
5.54
0.259
129.17
1.91
2.07
OF
143.0
124.0
117.0
13.45
0.617
128.00
1.83
1.99
OS
93.7
92.1
91.2
1.27
0.059
92.33
-0.65
-0.49
OX
105.7
105.0
96.0
5.41
0.230
102.23
0.04
0.20
OY
151.0
147.0
143.0
4.00
0.190
147.00
3.15
3.31
OZ
, v -;v ' ,
HSMi
• « *
P
87.6
113.6
95.9
13.28
0.617
99.03
-0.18
-0.03
PA
65.2
71.4
66.3
3.31
0.147
67.63
-2.37
-2.21
PB
107.1
102.1
107.7
3.07
0.133
105.63
0.27
0.43
PG
137.1
1250
110.0
J3.58
0643
124.03
1.55
1.71
PI
- <.Vf <
PM
83.9
96.6
93.7
6.65
0.301
91.40
-0.72
-0.56
PQ
84.3
75.2
85.1
5.50
0.235
81.53
-1.40
-1.24
PR
85.0
86.4
91.7
3.53
0.159
87.70
-0.97
-0.81
PV
127.4
112.4
109.8
9.50
0.417
116.53
1.03
1.19
PW
mmm
Q
108.6
108.9
109.8
0.62
0.028
109.10
0.52
0.67
QC
MffiR
wMimmmw
•
QJ
92.0
93.0
92.0
0.58
0.024
92.33
-0.65
-0.49
QP
118.9
119.5
123.9
2.73
0.119
120.77
1.33
1.49
QQ
138.4
137.2
126.9
6.32
0.273
134.17
2.26
2.42
QT
100.2
106.2
101.6
3.14
0.142
102.67 .
0.07
0.23
QU
65.0
65.6
61.6
2.16
0.095
64.07 .
-2.62
-2.46
QW
92.9
83.5
83.8
5.34
0.223
86.73
-1.04
-0.88
QX
86.0
85.8
86.8
0.53
0.024
86.20
-1.08
-0.92
QZ
97.6
109.8
108.1
6.61
0.289
105.17
0.24
0.40
RD
147.1
135.9
149.1
7.11
0.313
144.03
2.95
3.10
.1
RF
ISllfilSS
H3MHK
* .* *• f *. ¦
RG
112.0
108.0
119.0
5.57
0.261
113.00
0.79
0.95
• 3
No data submitted
TAG SYMBOLS
It a Above control limit
lb>-
Insufficient data
x =
Determined to be an outlier
U 3 Below control limit
jj
-------
('
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
7/30
Gross Alpha
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
KK
71.4
80.8
800
5.21
0223
77.40
,:16i
-1.53
RP
% - ^
RR
lillliillll!::
#
•
RU
45.9
40.4
45.5
3.07
0.130
43.93
-4.02
-3.86
RV
<•"
-*,"r r
>¦ », " '
RZ
101.4
105.0
102.3
1.87
0.085
102.90
0.08
0.24
S
114.7
117.6
106.3
5.87
0.268
112.87
0.78
0.94
sc
105.7
102.4
111.8
4.77
0.223
106.63
0.34
0.50
SD
104.0
100.5
103.8
1.97
0.083
102.77
0.08
0.23
SF
104.4
105.1
101.0
2.19
0.097
103.50
0.13
0.29
SI
94.8
92.4
101.0
4.44
0.204
96.07
-0.39
-0.23
SL
127.0
140.0
137.0
6.81
0.308
134.67
2.29
2.45
SM
91.1
103.8
89.4
7.87
0.342
94.77
-0.48
-0.32
SN
81.6
81.5
90.6
5.23
0.216
84.57
-1.19
-1.03
SO
86.5
88.1
93.0
3.39
0.154
89.20
-0.87
-0.71
SR
101.1
116.5
131.9
15.40
0.731
116.50
1.03
1.19
ss
113.0
112.8
2.72
114.47
0.89
1.05
ST
/<•''
!BIS3Bll|l
•
sx
105.0
105.6
97.6
4.46
0.190
102.73 "
0.07
0.23
sz
80.0
75.2
81.8
3.41
0.157
79.00
-1.58
-U2
T
102.4
86.1
90.7
8.40
0.387
93.07
-0.60
-0.44
¦
TD
88.6
105.4
120.2
15.81
0.750
104.73
0.21
0.37
TG
56.8
72.1
62.1
7.77
0.363
63.67
-2.64
-2.49
TH
105.7
100.7
97.9
3.95
0.1.85
101.43
-0.02
0.14
H
\ "
' v/ *" " " s • / 'V"''K '
' v*,,: ''
^ .v; '
TJ
5 ax >
TL
102.1
62.5
89.1
20.19
0.939
84.57
-1.19
-1.03
TN
127.2
89.2
93.0
20.93
0.901
103.13
0.10
0.26
TQ
102.0
106.0
87.4
9.79
0.441
98.47
-0.22
-0.06
TS
121.6
123.6
120.3
1.66
0.078
121.83
1.40
1.56
TY
85.1
82.9
84.7
1.17
0.052
84.23
-1.21
-1.05
U
84.0
87.0
85.1
1.52
0.071
85.37
-1.13
-0.98
UA
129-9. „
130.0
132.0
1.53
0.071
130.33
1.99
2.15
UE
ISBpIll
WWyWffi';;
r ^{'v << • .4 '«*><*?-. *¦< t-
UK
' * - -
' v > t
i||||SS|||fS
* •
vs'" «? <1.^
UN
76.5
80.4
72.7
3.85
0.183
76.53
-L75
-1.59
UP
iOO.8
108.6
101.1
4.42
0.185
103.50
0.13
0.29
UQ
- V;-;;
iiiiS
;V*
>
7T\'
- ¦" 7-"' '-J ~Ti> ^
uw
98.0
90.3
3.86
0.183
94.33
-0.51
-0.35
UY
^^>5-s '~ -"-j* Vs
«• - -~«~
<"¦ «• . > >v »
lw»yiwyYy'"'>>»y»
<-C -v
VA
v '
" \ % C, '
x ' ' " *
¦i 'Hi*
f/V""
A w.o >' >
O %•• •¦v' v.
v is ^
a 'i-'A-, 5y
VC
' f <
"" s / '
J
J - —s " J
^ w
VG
:•
• '
VH
77.5
68.1
70.3
4.92
0.223
71.97
-2.07
-1.91
VI
95.3
118.0
77.4
20.35
0.963
96.90
-0.33
-0.17
• S
No data submitted
TAG SYMBOLS
IT s Above control limit
0 =
i—
Insufficient data
X s
Determined to be an outlier
3 Below control limit
/J
-------
C(
8/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Gross Alpha
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VJ
J' ; ^ - /w
# "
VM
¦° •
VO
88.3
82.5
75.2 6.56
0.311
82.00
1.37
-1.21
VT
iiaiaffii
•
W
124.0
116.0
. 118.0 4^16
0.190
119.33
1.23
1.39
WE
102.1
95.6
90.4 5.86
0.278
96.03 -0.39
-0.23
WF
81.4
87.3
92.0 5.31
0.251
86.90
1.03
-0.87
WO
"
X
102.8
123.5
122.6 11.70
0.491
116.30
1.02
1.18
Average
Data sorted by Laboratory Averaj
f©
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.53
X
CO
91.40
PM
100.40
HL
23.80
X
AZ
92.33
QJ
100.53
FU
43.93
ii
RU
92.33
OS
100.87
A
60.80
GQ
92.67
FL
101.10
BM
63.67
TG
92.87
NJ
101.23
GZ
64.07
QU
93.07
T
101.43
TH
67.63
PA
93.43
BA
101.67
D
68.50
DG
93.53
NA
101.77
AP
71.97
VH
93.80
AR
101.87
C
72.33
AE
93.83
DZ
102.23
OX
75.13
MY
93.83
CQ
102.60
CG
76.53
UN
94.33
UW
102.67
QT
77.40
RK
94.67
LR
102.73
sx
79.00
SZ
94.67
CJ
102.77
BC
79.23
AH
94.77
SM
102.77
SD
80.23
HP
95.47
DS
102.90
RZ
81.53
PQ
95.50
NT
102.90
EV
82.00
VO
96.00
BO
103.13
TN
84.00
MV
96.03
WE
103.33
LF
84.23
TY
96.07
SI
103.50
UP
84.57
TL
96.57
cx
103.50
SF
84.57
SN
96.83
BH
104.70
EB
84.77
JE
96.90
VI
104.73
TD
85.00
MQ
97.37
CE
104.90
AF
85.37
U
97.40
AJ
104.93
I
85.47
JY
97.57
DI
105.00
DT
86.20
QX
97.57
BS
105.17
QZ
86.27
FJ
97.63
LT
105.43
IC
86.73
QW
98.33
HI
105.60
DD
86.90
WF
98.37
JS
105.63
PB
87.70
PR
98.47
TQ
105.70
JG
89.20
SO
98.67
DB
105.90
AK
90.67
EO
99.03
P
106.63
SC
• = No data submitted
TAG SYMBOLS
IT
s Above control limit
I 0 = Insufficient data
x s Determined to be an outlier
II
= Below control limit
-y
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
9/30
Gross Alpha
Average
Data sorted
Tag • Lab Average
by Laboratory Average
Tag Lab
Average
Tag
Lab
107.00
107.33
107,47
107.70
107.97
108.37
109.10
109.70
110.57
111.37
112.67
112.87
113.00
113.00
113.23
CK
CA
BB
JN
ID
CS
Q
J
AW
E
ER
S
RG
NK
L
114.47
114.67
115.67
116.30
116.50
116.53
117.20
118.53
119.33
120.77
121.33
121.83
124.03
124.67
127.33
128.00
SS
NO
FZ
X
SR
PV
HK
AL
W
QP
FN
TS
PG
M
BK
OF
128.00
129.17
129.67
130.33
130.57
131.93
133.00
134.17
134.67
143.60
144.03
147.00
155.43
175.83
191.50
233.77
IT
rr
it
tr
X
X
X
MF
O
KX
UA
K
BN
DE
QQ
SL
AU
RD
OY
JQ
KE
BG
GT
% responding labs Frequency distribution
10-
*6 -4 -2 0 +2 +4
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10-
T—ij-mf
fm ^
•6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS ff a Above control limit
0 = Insufficient data x s Determined to be an outlier U s Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
10/30
Radium-226 Statistical Summary 189 Participants
The known value of this nuclide is 24.8 pCi/1 with an expected precision of 3.7; the control limits
are 18.4 to 31.2; the'warning regions are 18.4 to 20.5 and 29.1 to 31.2
85(45.0 %) Failed to respond
5(2.6 %) Outliers --------
13(6.9 %) Out of control ---
but not an outlier
Statistic
s«i§i
lysm
. 77(40.7 %) Within all limits
Respondents
9(4.8 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
25.63
23.62
558.12
92.18
3.35
0.04
24.07
-2.96
-0.03
Grand Avg 23.27
3.78
14.27
16.23
-6.16
-0.40
24.03
-3.09
-0.20
18(17.3 %) More than 3 norm. S.D. ,
9(8.7 %) Between 2 and 3 norm. S.D. •
&
« '* V|
~jV'wtJ* ' yr
• 55(52.9 %) Within 1 norm. S.D.
of known value
•22(21.2 %) Between 1 and 2 norm. S.D.
-------
(( ;
11/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
^
Radium-226
>1
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
23.4
24.4
• 24.3
0.55
0.160
24.03
0.36
-0.36
AE
23.3
23.6
24.0
0.35
0.112
23.63
0.17
-0.55
AF
24.7
23.7
23.9
0.53
0.160
24.10
0.39
-0.33
AH
27.3
26.7
26.7
0.35
0096
26.90
1.70
0.98
AI
AJ
\
'Vo<
: v
AK
22.2
20.6
22.2
0.92
0.255
21.67
-0.75
-1.47
AL
24.2
23.4
25.3
0.95
0.303
24.30
0.48
-0.23
AP
26.4
26.9
27.7
0.66
0.208
27.00
1.74
1.03
AR
^ ' >
mmmmmm
J
AU
21.0
21.0
21.6
0.35
0.096
21.20
-0.97
-1.69
AW
20.7
20.8
22.7
1.13
0.319
21.40
-0.88
-1.59
AZ
23.6
26.7
29.2
2.81
0.894
26.50
1.51
0.80
BA
18.6
18.2
17.6
0.50
0.160
18.13
-2.41
-3.12
BB
,9'S,
BC
26.3
25.5
27.6
1.06
0.335
26.47
1.50
0.78
BO:
24.0
46.0
44.0
:W8fr
5.481
37.67
6.74 6.02
X 4
BH
20.5
24.4
21.8
1.99
0.623
22.23
-0.49
-1.20
BK
23.6
23.7
23.6
0.06
0.016
23.63
„_0.17_
-0.55
BL
iBlilliiiliii
mmmmm
? .
BM
22.5
21.8
22.4
0.38
0.112
22.23
-0.49
-1.20
BN
25.1
26.5
24.9
0.87
0.255
25.50
1.04
0.33
BO
24.4
23.4
22.7
0.85
0.271
23.50
0.11
-0.61
BS
tHHHI
• ' '<*.
BW
\'y> - v
mt^aggglglB
ililllpt
* v*r-
C
23.4
24.9
26.0
1.31
0.415
24.77
0.70
-0.02
CA
24.8
24.3
24.3
0.29
0.080
24.47
0.56
-0.16
CE
19.9
23.8
20.7
2.06
0.623
21.47
-0.85
-1.56
CG
23.4
22.6
25.3
1.39
0.431
23.77
0.23
-0.48
CJ
24.0
25.0
25.0
0.58
0.160
24.67
0.65
-0.06
CK
18.9
18.0
22.9
2.61
0.782
19.93
-1.56
-2.28
CM
CO
CP
mmm
Bill#.
,&:¥i
aaniiiivHHK
f "0?
• - ,
•
CQ
lllPf
flSfifif
-"Vrf v '
CS
26.2
25.4
24.9
0.66
0.208
25.50
1.04
0.33
CX
'' ?&v"'7' ¦> v"
lilpili
• :
D
v'¦¦
4^ V'v.i: l"!\
; • •. ¦,;¦< . ¦¦'¦:¦
SsllSfip'pjiiM;
¦¦WMIi
•
• :
DL
[ ,
IllHililli
;/ ¦
~ v-v
DM
Jf£X-K£i^
<
• =
No data submitted
TAG SYMBOLS
It = Above control limit
[0m
Insufficient data
x = Determined to be an outlier
¦li s Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
12/30
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
DO
v\>
DS
DT
23.4
25.4
24.4
1.00
0.319
24.40
DZ
25.7
27.5
27.1
0.95
0.287
26.77
E
20.0
20.0
20.4
0.23
0.064
20.13
EB
24.3
24.6
25.0
0.35
0.112
24.63
EL
26.9
25.1
26.0
0.90
0.287
26.00
EO
25.4
25.4
22.5
1.67
0.463
24.43
ER
24.3
24.0
24.8
0.40
0.128
24.37
EV
¦ i. :;j
">V - 1 " '
IliiWlll
EX
Sl|®®ipsi
S^SSMIIS
Normalized deviation
HX
JN
JQ
JS
JX
JY
K
KE
KT
KX
L
LF
LL
• :
• :
0.53
1.64
-1.47
0.64
1.28
0.54
0.51
\' FE^%
SIBILS
Milsaiiii
iliiig!
¦vMW-
iillrtlips#:
lilSIII
- " ':
FN
21.5
19.5
19.9
lo6
FU
Ill|ili
FZ
32.0
33.0
32.0
0.58
GE
g^§§i#
msumm
|g|g||lil
llll|S|lff
' GI >*.
GQ
29.4
19.7
19.0
0.70
GT
lllpBIItl
GZ
.'' > ^ "V? • ¦ ¦ f-'.
HI
HK
26.0
25.3
26.8
0.75
HL
21.6
21.6
21.6
0.01
HP
26.7
23.9
26.0
1.46
Itlplllll
0.319
0.160
0.223
0.239
0.000
0.447
-0.19
0.92
-2.18
-0.08
0.56
-0.17
-0.20
Ipfppii
Still
.• ¦
:W1
20.30 -1.39 -2.11
32.33
19.70
SIS
4.24
3.53 It
mm
-1.67 -2.39
&i.v fiiU ¦•'sv »»;(•>;*¦:
26.03
21.60
25.53
1.29
-0.78
1.06
0.58
-1.50
0.34
I
24.8
24.1
24.6
0.36
0.112
24.50
0.57
-0.14
IC^V:^
X-. s**-*- <•, -y. >
S§l§iftil!S
M
f-Si
m
j:#S
•
ID
14.9
16.5
15.4
0.82
0.255
15.60
-3.59
-4.31
T
J
22.2
24.5
24.6
1.36
0.383
23.77
0.23
-0.48
JE
27.6
32.6
23.9
4.37
1.741
28.03
2.23
1.51
JG
16.8
18.9
18.4
1.10
0.335
18.03
-2.45
-3.17
mmmmmma
23.2
21.0
22.3
1.11
0.351
23.0
24.2
25.2
1.10
0.351
24.4
28.0
29.2
2.50
0.766
21.7
20.3
21.0
0.70
0.223
24.5
24.3
24.9
0.31
0.096
22.17
24.13
27.20
21.00
-0.52 -1.23
0.40 -0.31
1.84 1.12
-1.06 -1.78
¦¦mmm
24.57
lltllll®
0.61
1PP«P1
-0.11
wwm
0 a
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
II a Below control limit
-------
/f 1
13/30
^
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Radium-226
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LK
268.0
252.0
257.0 8,19
;,; 3.960
259,00
11035 109.63 x
LT
19.0
28.1
24.3 4.57
1.862
23.80
0.25 -0.47
M
22.9
20.8
20.4 1.34
0.399
2137
-0.89 -1.61
MA
•• *' ' >
^; S2^c:->.'Cv.it\
MF
' ? 'C ^ ^ '¦
MP
V** ' ,' *1""' '
lllllllil
I* ' '..f. ' :.''' '< '[
MQ
MV
W^MSSSSmS:
.- .'V:.f^,.v^.1,V,5'",;A ,¦<." Cj :-:.:::j\x- ':< -
MY
:£!
P«li
•>, s c'"" ^ ^ \i ¦>¦ * „ ( , ^
N
.v&££|iv&
Illlil®
NA
MMMiMMn
l!!lll!#iii|
, .<; ,#¦,,, x-"~ - x* -
NH
28.6
26.7
25.0 1.80
0.575
26.77
1.64 0.92
NJ
28.0
32.0
26.0 3.06
0.958
28.67
2.53 1.81
NK
lllllllil
NO
29.9
30.1
31.7 0.99
0.287
30.57
3.41 2.70
NT
24.8
24.9 _
24.9 0.06
0.016
24.87
0.75 0.03
O
v> /« *
x-.;: tfp
"'.' V. , '"';
%msm
, % '•>** ^ x 1 < « .- %/ ^ > ^,"<' ,
OF
19.5
16.5
14.3 2.61
0.830
16.77
-3.05 -3.76 J1
OS
iliHI
mwHP
liilllllilii.
OX
25.3
25.4
25.7 0.21
0.064
25.47
1.03 0.31
OY
16.0
15.2
15.0 0.53
0.160 _
15.40
-3.69 -4.40 }
OZ
fii®s|lllB
P
33.0
32.8
^ 31.5 _J0.81 ^ ^
0.239
32.43
4.29 3.57 ft
PA
PB
24.6
24.4
24.9 0.25
0.080
24.63
0.64 -0.08
PG
20.3
20.7
19.0 0.89
0.271
20.00
-1.53 -2.25
PI
/-' >>""•¦ ;Wji< *P"
PM
« ^ ^ " t s. ° . xf >
* -i-. : ^
•^' ¦-''<" .^A V^"^- " '
cc:;/r^6I63?>^::>7;35 x
PQ
¦¦ 8,0
9.3
10.0 1.01
0.319
9.10
PR
931*^*
:;: •... 'j./d'f- - r>
PV
22.1
26.8
23.2 2.46
0.750
24.03
0.36 -0.36
PW
24.2
21.8
23.2 1.21
0.383
23.07
-0.10 -0.81
Q
32.0
27.2
31.1 2.55
0.766 _
30.10
3.20 2.48
QC
•/¦ v. '; '^'V !¦¦;'¦'•. ^Vj's-O" +" #»«<;
w;^.y •¦ ; sg-.S, -x-;a ^ •s.:^v'i- .,'5.' i ¦¦'-<. v "•
QJ
16.6
14.3
16.5 1.30
0.367
15.80
-3.50 -4.21 " il~ "
QP
' ?-'i ? 'K 7"
tow "5^ *•
./ ; ~' -' %,' >^*v;
QQ
12.8
13.9
12.4 0.78
0.239
13.03
-4.79 -5.51
QT
14.9
15.6
15.9 0.51
0.160
15.47
-3.65 -4.37 Jl
QU
24.6
25.0
25.0 0.23
0.064
24.87
0.75 0.03
QW
¦lllBllli!
msmmmm
BlPlllllBBI
:||||||||i||;:!|^|.
QX
15.2
16.6
16.1 0.71
0.223
15.97
-3.42 -4.14 U
QZ
23.4
22.7
23.2 0.36
0.112
23.10
-0.08 -0.80
RD
19.2
21.2
21.4 1.22
0.351
20.60
-1.25 -1.97
RF
24.0
26.0
24.0 1.15
0.319
24.67
0.65 -0.06
RG
' ffi '*¦' ¦"¦"* •¦ '' '-' w /
v ^ '' < ' o-,"1 """¦M'' "^ '
iSllliiB
'''VS-' ' ^ ^ '
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
0 =
v-
Insufficient data
x s Determined to be an outlier
Ji s Below control limit
V
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
14/30
Radium-226
Lab Res.!
Exper. Rng anal
Normalized deviation
UK
26.4
24.9
24.1
117
0.367
RP
RR
RU
24.4
21.8
20.0
2.21
0.702
RV
.""¦••¦''.Xa
RZ
23.8
21.8
23.5
1.08
0.319
S
25.0
24.9
25.0
0.06
0.016
sc
23.2
24.4
25.7
1.25
0.399
SD
21.0
20.0
21.2
0.64
0.192
SF
21.2
24.3
19.3
2.52
0.798
SI
11.7.
7.3
10.6,
2.29
0.702
SL
v' -• •.
•• ^ C\x.;
." . ¦ vv.\\
SM
23.7
25.7
22.7
1.53
0.479
SN
••••. •'x .-.vv
SO
23.6
23.7
24.5
0.49
°.!44
SR
^ v
SS
21.7
22.9
24.0
115
0.367
ST
SX
24.4
22.1
23.8
1.19
0.367
SZ
24.0
25.3
23.4
0.97
0.303
T
25.0
25.1
25.7
0.38
0.112
TD
58.1
48:2
31.3
13.65
7.244
TG
TH
{>+ * -
IT
23.7
23.9
26.9
i.79
0.511
TJ
¦.A' f
* <-¦¦•<, -'»
> ' ' ', 'Jf-<
TL
22.9
6.3
5.2
9.92
4.477
TN
18.2
20.1
22.9
2.36
0.750
TQ
24.7
28.5
27.4
1.96
0.607
TS
29.7
31.8
29.5
1.27
0,367
TY
U
26.4
25.7
26.5
0.44
0.128
UA
SiSps^^
UE
% r
• " V
UK
'
v0;
UN
15.2
14.5
12.9
1.18
0.367
UP
21.9
26.8
24.4
2.45
0.782
UQ
24.7
25.8
24.5
0.70
0.208
uw
24.9
23.9
24.6
0.51
O.160
VY
VA
VC
s -
' : , -
?^ if:
VG
>v .
,' 'v • V
VH
22.7
18.2
21.6
2.35
0.718
VI
22.6
20.3
21.4
1.15
0.367
25.13
22.07
0.87
-0.56
23.03 -O.ll
24.97 0.79
24.43 0.54
20.73 -1.19
21.60 -0.78
V
-v -
24.03 0.36
23.93 0.31
l -~y, ^ kj- *$}-<¦ ~H
22.87 -0.19
+jX-r«cw<« wry'Mm'mmyW'W'/WOT
< v""„% ^
0.16
~ 1
V *' ,- <
-1.28
¦-*' '.'¦¦¦ -• i
-0.83
0.08
-0.17
-1.90
-1.50
~' "'a
, V. , s ^ s ,
>.» v V —
•>vV * ^ * W
-0.36
-0.41
23.43
24.23
25.27
45.87
0.08
0.45
0.93
10.68
/ , S' \ ** ^ r* :*
< %'C %Z\l* «' -•¦ ; ^
24.83 0.73 0.02
11.47 -5.53 -6.24 IT
20.40 -1.34 -2.06
26.87 1.68 0.97
3.31 2.59
30.33
SI::
26.20
1.37
0.66
''**''1 &}.-y-'h^- -•-< ^ -k<¦
14.20
24.37
25.00
24.47
¦>v
mmmmmmm
20.83
21.43
• a No data submitted
0 = Insufficient data
X 3
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
J! 3 Below control limit
-------
ft
15/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Radium-226
1
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR) Average (grand-avg) (known) Tag
VJ
VM
' ' ** " " " •
VO
VT
W
21.1
23.6
23.0 1.31
0.399 22.57 -0.33 -1.05
WE
. - ¦ v rU-V.''1- ¦ rv#,
WF
; ^ -'i ,'V "¦<' '* <¦ ''' ' Vf .. V.'
" " < "¦¦¦> ^ ",s *'•> ' V* '''
WO
'Vs'/s ^ * < J*" \ „ '
' ' a,** ,; ^
X
23.1
27.9
23.1 2.77
0.766 24.70 0.67 -0.05
Average
Data sorted by Laboratory Averaj
fe
Ta*
Lab
Average
Tag Lab
Average Tag Lab
9.10
X
PQ
22.23
DB
24.63 EB
9.87
X
SI
22.23
BM
24.67 RF
11.47
U
TL
22.23
BH
24.67 CJ
13.03
11
Q9
22.57
W
24.70 X
14.20
11
UN
22.87
SS
24.70 DE
15.40
U
OY
23.03
RZ
24.77 C
15.47
u
QT
23.07
PW
24.83 TI
15.60
li
ID
23.10
QZ
24.87 qu
15.80
11
QJ
23.43
sx
24.87 NT
15.97
u
QX
23.50
BO
24.97 S
16.77
u
OF
23.63
BK
25.00 UQ
18.03
u
JG
23.63
AE
25.13 RK
18.13
u
BA
23.77
J
25.27 T
19.70
GQ
23.77
CG
25.47 OX
19.93
CK
23.80
LT
25.50 CS
20.00
PG
23.93
SO
25.50 BN
20.13
E
24.03
PV
25.53 HP
20.30
FN
24.03
A
26.Q0 EL
20.40
TN
24.03
SM
26.03 HK
20.60
RD
24.10
AF
26.20 U
20.73
SD
24.13
JX
26.47 BC
20.83
VH
24.23
sz
26.50 AZ
21.00
K
24.30
AL
26.77 NH
21.20
AU
24.37
UP
26.77 DZ
21.37
M
24.37
ER
26.87 TQ
21.40
AW
24.40
DT
26.90 AH
21.43
VI
24.43
sc
27.00 AP
21.47
CE
24.43
EO
27.20 JY
21.60
SF
24.47
UW
28.03 JE
21.60
HL
24.47
CA
28.67 NJ
21.67
AK
24.50
I
30.10 Q
22.07
RU
24.57
L
30.33 TS
22.17
JS
24.63
PB
30.57 NO
• = No data submitted
TAG SYMBOLS
ft s Above control limit
1 0s Insufficient data
x = Determined to be an outlier
11 s Below control limit
4
-------
fr
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
16/30
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
32.33
It
FZ
32.43
ir
P
45.87
X
TD
37.67
X
BG
259.00
X
LR
% responding labs
Frequency distribution
10-
¦ ft
¦lfalllflljl^illft^m
r -2 0 +2 44
Normalized deviation of the mean from the known value
Frequency distribution
-6
% responding labs
+6
10-
0—r
-6
mjLimIIIII
- -¦ JL
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
—r"
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft a Above control limit
li = Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
17/30
Radium-228 Statistical Summary 189 Participants
The known value of this nuclide is 20.7 pCi/1 with an expected precision of 5.2; the control limits
are 11.7 to 29.7; the warning regions are 11.7 to 14.7 and 26.7 to 29.7
93(49.2 %) Failed to respond •
3(1.6 %) Outliers —
Statistic
87(46.0 %) Within all limits
Respondents
6(3.2 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
20.17
3.59
12.92
17.82
-2.56
-0.15
20.53
-0.81
-0.05
Grand Avg 20.31
2.75
7.56
13.54
-1.88
-0.14
20.60
-0.48
-0.04
3(3.1 %) More than 3 norm. S.D.
6(6.3 %) Between 2 and 3 norm. S.D.
igmm
as
•77(80.2 %) Within 1 norm. S.D.
of known value
10(10.4 %) Between 1 and 2 norm. S.D.
-------
18/30 CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
v
Radium-228
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
A
20.6
17.8
18.8
1.42
0.318
19.07 -0.41 -0.54
AE
17.6
19.2
19.9
1.18
0.261
18.90 -0.47 -0.60
AF
22.7
22.1
22.4
0.30
0.068
22.40 0.70 0.57
AH
20.2
217
20.8
0.75
0.170
20.90 0.20 0.07
AI
v-'.v, ^
AJ
' ;;
AK
22.6
20.4
20.0
1.40
0.295
21.00 0.23 0.10
AL
13.8
22.9
19.0
2.31
0.466
20.23 -0.03 -0.16
AP
16.1
188
21.1
2.50
0.568
18.67 -0.55 -0.68
AR
ISllIllli
: vix':'
~ > < y"1*^ ' < >vv y -
> vV ^vv v&v \ / ( - 0 <
BH
21.1
18.3
18.3
1.62
0.318
19.23 -0.36 -0.49
BK
19.7
19.4
18.7
0.51
0.114
19.27 -0.35 -0.48
BL
f-y. ~ ' * --r-r ,• ¦?
i -, -i-s ~ ^ ,
BM
185
20:°
19.0
0.76
0.170
19.17 -0.38 -0.51
BN
"C" 1
fePiiiiiiR
v'. -A ^ Si Ti„ r ^ v
BO
186
187
20.6
113
0.227
19.30 -0.34 -0.47
BS
-
>> > • ' ¦» ., ' s ¦¦
X'y,y ;•; -l-; .'".t :z'*A
BW
C
21.4
21.0
19.8
0.83
0.182
20.73 0.14 0.01
CA
20.9
20.7
18.7
1.22
0.250
20.10 -0.07 -0.20
CE
17.4
18.9
19.5
1.08
0.239
18.60 -0.57 -0.70
CG
18.8
17.7
21.5
1.96
0.432
19.33 -0.33 -0.46
CJ
20.0
20.0
19.0
0.58
0.114
19.67 -0.21 -0.34
CK
20.4
174
22.3
2.47
0.557
20.03 -0.09 -0.22
CM
¦¦".7 ¦
iisiiiiii
CO
SBISIiiit
CP
CQ
';S3f
CS
14.4
14.0
146
0.31
0.068
14.33 -1.99 -2.12
CX
D
w/ s 5 i
mmm
:
DB
20.5
22.8
23.4
1.53
0.329
22.23 0.64 0.51
DD
lliililllll
DE
22.8
22.8
22.9
0.06
0.011
22.83 0.84 0.71
DG
DI
111111®:
' ' ''
. . •
DL
7 ¦¦'
^"¦v- 0 \VS Va,;v^ 'a*Tv>s1 .7 i¦«¦
DM
^ ^ s '"V%v'v O^s" '-y-: >-VtsK -*'¦< '•'• ^vVv'-'i ^'k ^ .: ••/
• =
No data submitted
TAG SYMBOLS
1T 3 Above control limit
0 "
Insufficient data
x =
= Determined to be an outlier U a Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
19/30
Radium-228
Lab Res. 1
Res. 2 Res. 3
Exper. Rng fined Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
DO
DS
DT
DZ
E
EB
EL
EO
ER
EV
EX
FF
FJ
FL
FN
FU
FZ
GE
GI
GQ
GT
GZ
HI
HK
HL
HP
HX
I
10
JN
JQ
JS
JX
JY
KT
L
LF
LL
StMMiMMl
•
#
22.6
21.3
19.8
1.40
0.318
21.23 0.31
0.18
21.8
20.8
20.7
0.61
0.125
21.10 0.26
0.13
w - /¦> #*3
18.4
17.5
18.3
0.49
0.102
18.07 -0.75
-0.88
21.5
21.3
20.5
0.53
0.114
21.10 0.26
0.13
20.6
19.7
\< u ?•'; .£$(,';' <
20.9
0.62
0.136
20.40 0.03
-0.10
#
22.3
10.0
12.3
20.3
20.8
19.9
18.8
24.0
14.0
11.3
20.4
8.8
12.3
1.80
2.72
0.58
WMmWrn
0.409 22.23 0.64
wupwpwMh
>S-v7:;^p
• vsJ5-#^
*
^ * fffi >~ & u i
'<'< <¦ s t
0.51
* ' -Z2&S&
VWv.V.^WsSSlVtW < > mO+L& 5 1
0.114
lilllSf
¦
-2.91
x"-" ¦•¦".
' *
vcix-:m?m
J ••)*?• :v "-J
20.8
20.2
0.32
0.068
20.8
20.8
0.00
0.000
___ 17.2
17.6
1.46
0.307
'r^"A'w v- ¦*
iBMiS
17.4
19.9
1.25
0.284
20.43 0.04 -0.09
20.80 0.16 0.03
18.23 -0.69 -0.82
IlfelS
18.70
SSS
-0.54
-0.67
ID
27.4
27.8
25.4
1.29
0.273
26.87
2.18
2.05
J
21.1
19.9
19.1
1.01
0.227
20.03
-0.09
-0.22
eJE
24.2
28.6
26.2
2.20
0.500
26.33
2.01
1.88
JG
24.9
27.1
20.0
3.63
0.806
24.00
1.23
1.10
¦5^f§Hg
20.8
20.6
24.7
17.0
mS
20.7
20.1
20.5
18.6
hhh
piiifilip
20.4
21.6
22.6
18.5
iiWsssm
19.9
mmmmiiifiiiiii
-"> v\ «' ?: r:-
0.170
0.182
20.63
20.77
22.60
18.03
smvs
21.0 21.3
¦Wi
0.74
0.159
MWRIme
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
Determined to be an outlier
ft a Above control limit
li 3 Below control limit
-------
20/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
/
Radium-228
~'—N
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
Lit
37.0
31.0
' 31.0
! 3.46
0682
33.00
4,23 4.10 x
LT
19.9
18.0
20.9
1.47
0.329
19.60
-0.24 -0.37
M
24.0
23.0
22.0
1.00
0.227
23.00
0.90 0.77
MA
,
. '',vi.-sl^'°J°J*"%••' !,-
MF
« ' ^
.. t ' C> "."
'' <¦ W ,• v'-
MP
MQ
J v 'V', w> - 7
illllilliiiiii^^lSIi^fe
MV
MT
N
NA
>.<¦?< vt
wM;SWSXm$
NH
17.2
16,2
c V;f"!',: 0';
NJ
22.0
21.9
20.0
100
0.227
21.00
0.23 0.10
NK
' "• ,v a. s
~ - % <• V <. J V •
NO
19.0
21.0
23.0
2.00
0.454
21.00
0.23 0.10
NT
20.5
21.3
22.4
0.95
0.2 i6
21.40
0.36 0.23
O
5^ , '"•/ ' >K'T»
iilslll
OF
28.0
220
19.8
4.24
0.931
23.27
0.98 0.85
OS
yf-
'^+/r
' '* '' ;
¦•?"¦' c, -
¦ < '%*vs' .v ^ ji . - 't " •
ox
21.4
21.2
20.8
0.31
0.068
21.13
0.27 0.14
OY
20.0
21.0
22.0
1.00
0.227
21.00
0.23 0.10
OZ
* *. t , , V V ^ .L ^ ^
' i* t' w ^
P
13.5
10.3
12.2
1.61
0.363
12.00
-2.77 -2.90
PA
"¦> e.'fv * "**W<*V V*
' % 'A •. * '
•¦ > ^-yfry '% >-a »w(^v jww>wm 5f,«v.« tv^yv v^jv.
V >-' !V>V' ,.^E"x%- -:VV .
PB
20.1
20.8
20.5
0.35
0.080
20.47
0.05 -0.08
PG
>' •.1
aVWV^'.W.W.^ViW'MV.V.VWAVAV
••• :jvX'-v*•^w^vx-w-s.kjm:.'
PI
- ¦ HS
/? A wVfc.>^
/s'i' v /
* ^
..¦; s. •<-:«« rx-fc:-:::
PM
}>, ->f% , **•> s- • *<<
PQ
19.7
18.4
21.4
1.50
0.341 _
19.83
-0.16 -0.29
PR
.;s7 H.f;'
s,a, •wr>v--
ifPPpcHs
. e
PV
20.7
17.8
26.2
4.27
0.954
21.57
0.42 0.29
PW
20.9
21.2
20.6
0.30
0.068
20.90
0.20 0.07
Q
24.0
23.4
19.1
2.67
0.557
22.11
0.62 0.49
QC
..
AX '•;: :'x'v .' •'.; / '¦ ¦ v>?:''; : ;v:v..\v- v'!.>.
silfiiSfi
QJ
23.6
1.9.7
25.1
'2.79
0.61.3
22.80
0.83 0.70
QP
QQ
'¦.....
t "¦ v* „ - -¦ > •**
y-.-., -
v' >. 5 .. '
"'"iSw!
QT
19.7
21.7
19.2
1.32
0.284
20.20
-0.04 -0.17
QU
21.3
200
22.6
1.30
0.295
21.30
0.33 0.20
QW
"¦ ' ' ' " V '< ¦¦
QX
19.7
19.9
19.6
0.15
0.034
19.73
-0.19 -0.32
QZ
18.7
18.6
18.1
0.32
0.068
18.47
-0.61 -0.74
RD
16.5
18.1
18.5
1.06
0.227
17.70
-0.87 -1.00
RF
21.0
20.0
22.0
1.00
0.227
21.00
0.23 0.10
RG
1sSfs:«Sg^|;
^'V - •<
• =
No data submitted
TAG SYMBOLS
1T = Above control limit
0 = Insufficient data
x s Determined to be an outlier
U> s Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
21/30
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
RK
RP
RR
RU
RV
15.7
20.7
17.9
20.9
16.0
20.2
1.19
0.36
0.250
0.080
16.53
20.60
-1.26
-1.39
" , v ' - < ' r , ' • V
—w;<\
0.10 -0.03
¦
RZ
22.6
21.9
23.0
0.56
0.125
22.50
0.73
0.60
S
19.3
21.8
19.1
1.50
0.307
20.07
-0.08
-0.21
SC
18.1
15.9
15.9
1.27
0.250
16.63
-1.23
-1.35
SD
24.2
24.9
25.1
0.47
0.102
24.73
1.47
1.34
SF
19.6
24.7
19.7
2.92
0.579
21.33
0.34
0.21
SI
14.5 (
14.4
18.4
2.28
0.454
15.77
-1.51
-1.64
SL
llSBillBi
filiiaiiii
£v£-8?-^
iliiiliE
SM
' • . VS.
23.4
21.2
21.5
1.19
0.250
22.03
0.57
0.44
SN
so
SR
ss
ST
20.7
19.0
20.0
0.85
0.193
19.90 -0.14 -0.27
SX
20.5
23.2
21.8
1.35
0.307
21.83
0.51
0.38
sz
23.1
24.5
20.0
2.30
0.511
22.53
0.74
0.01
T
22.4
22.7
21.5
0.62
0.136
22.20
0.63
0.50
TD
24.2
29.5
25.9
2.71
0.602
26.53
2.07
1.94
TO
llllllSll
SHI®
IH
g
TI
27.3
27.1
29.9
1.56
0.318
28.10
2.59
2.46
TJ
TL
20.0
19.9
21.5
0.90
0.182
20.47
0.05
-0.08
TN
20.5
18.9
16.9
1.80
0.409
18.77
-0.51
-0.64
TQ
22.0
24.4
24.2
1.33
0.273
23.53
1.07
0.94
TS
16.3
17.0
13.3
1.97
0.420
15.53
-1.59
-1.72
TY
sBSiPlis
SillllfBpl
wmmmm
immmm
U
19.6
17.7
16.0
1.80
0.409
17.77
-0.85
-0.98
UA
UE
UK
illip
,Sr\. •. - v.A-0-- V ¦¦sy^ •• ¦ y • " ' v
iiilllw
5 * * --i ' ' , '
1181*
.... ... , ..• y-.J-:*.;-
vc •
!vi?
QW|
vo^.y-.
,:'Y
Ml
VH
19.6
23.3
20.1
2.01
0.420
21.00
VI
21.3
19.6
20.0
0.89
0.193
20.30
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
<11 a Below control limit
-------
22/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Radium-228
~\
Lab Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VJ
v ¦ - \ V•
VM
VO ¦;V
ififl
" '''"* 'V-'-?*-" ^—*•*¦» •' -
VT
- -
W 21.8
21.6
19.7 1.16
0.239
21.03 0.24 0.11
WE
isgfl
WF
*"' \"r * '{' , V;y • • S
WO
- . '• ; .
' - I;' "v' ' Y-! ' V" i V
* <• <¦ rf ^ V S "• W'
X 19.4
14.1
19.8 3.18
0.647
17.77 -0.85 -0.98
Data sorted by Laboratory Averaf
fe
Average
Tag
Lab
Average
Tag
Lab
Average Tag Lab
3.43
X
AU
19.73
QX
21.10 EL
10.93
X
FZ
19.83
PQ
21.10 ' DZ
11.97
GQ
19.90
ss
21.13 OX
12.00
P
19.93
UQ
21.23 DT
12.97
UN
20.03
CK
21.30 QU
14.33
cs
20.03
J
21.33 SF
15.53
TS
20.07
s
21.40 NT
15.77
SI
20.10
CA
21.57 RV
15.90
AW
20.20
QT
21.57 BA
16.53
RK
20.23
AL
21.83 SX
16.63
sc
20.30
VI
22.03 SM
17.50
BC
20.33
UW
22.17 Q
17.70
RD
20.40
EO
22.20 T
17.77
X
20.43
HK
22.23 FN
17.77
U
20.47
TL
22.23 DB
18.03
K
20.47
PB
22.40 AF
18.07
EB
20.60
RU
22.47 AZ
18.23
HP
20.63
JS
22.50 RZ
18.47
QZ
20.73
L
22.53 SZ
18.60
CE
20.73
C
22.60 JY
18.67
AP
20.77
JX
22.80 QJ
18.70
I
20.80
HL
22.83 DE
18.77
TN
20.90
PW
23.00 M
18.90
AE
20.90
AH
23.27 OF
19.07
A
21.00
VH
23.53 TQ
19.17
BM
21.00
RF
24.00 JG
19.23
BH
21.00
OY
24.73 SD
19.27
BK
21.00
NO
26.33 JE
19.30
BO
21.00
NJ
26.53 TD
19.33
CG
21.00
AK
26.87 ID
19.60
LT
21.03
UP
28.10 TI
19.67
CJ
21.03
W
33.00 x LR
• = No data submitted
TAG SYMBOLS
1T a Above control limit
0 a Insufficient data
^
x s Determined to be an outlier
<11 s Below control limit
/
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Radium-228
% responding labs
Frequency distribution
23/30
1
li
¦MM ¦ ¦—« * 1 -i-
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
20-
10-
04—r-
-6
Jil
i i i i
+4 *6
-4 -2 0 +2
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
24/30
Uranium (Natural) Statistical Summary 190 Participants
The known value of this nuclide is 27.0 pCi/1 with an expected precision of 3.0; the control limits
are 21.8 to 32.2; the warning regions are 21.8 to 23.5 and 30.5 to 32.2
85(44.7 %) Failed to respond
5(2.6 %) Outliers
7(3.7 %) Out of control
but not an outlier
Statistic
86(45.3 %) Within all limits
Respondents
-- 7(3.7 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
26.18
4.16
17.29
15.89
•3.05
-0.20
26.47
-1.98
-0.13
Grand Avg 2&33
2.52
6.35
9.57
-2.47
-0.26
26.50
-1.85
-0.20
12(11.4 %) More than 3 norm. S.D.
. 53(50.5 %) Within 1 norm. S.D.
of Known value
8(7.6 %) Between 2 and 3 norm. S.D.
;Vv." n-':Ph
^.< ,
* >. •
—jHinHL
* 32(30.5 %) Between 1 and 2 norm. S.D.
-------
({
25/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Uranium (Natural)
*
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
25.6
24.4
25.0
0.60
0.236
25.00
-0.77
-1.15
AE
28.3
29.9
29.5
0.83
0.315
29.23
1.67
1.29
AF
30.7
31.4
29.7
0.85
0.335
30.60
2.46
2.08
AH
25.9
211
26.9
3.10
1.270
24.63
-0.98
-1.37
AI
;7':#
illllll®
*,lt
AJ
; /: v-< *'
AK
26.2
27.5
28.8
1.30
0.512
27.50
0.67
0.29
AL
22.1
30.1
29.1
4.36
2.095
27.10
0.44
0.06
AP
•
AR
22.3
21.7
21.1
0.60
0.236
21.70
-2.67
-3.06
AU
- ; ¦
ISlliilll
T;!^'J;:-;: o ^:
; ^ ~4P^
AW
25.1
24.6
24.7
0^26
0.098
24.80
-0.89
-1.27
AZ
27.6
28.7
29.3
0.86
0.335
28.53
1.27
0.89
BA
29.4
25.9
26.2
1.94
0.689
27.17
0.48
0.10
BB
22.5
25.2
21.9
1.76
0.650
23.20
-1.81
-2.19
BC
27.2
26.8
27.1
0.21
0.079
27.03
0.40
0.02
BG
24.0
25.5
22.4
1.55
0.610
23.97
-1.37
-1.75
BG
28.4
28.8
29.1
0.35
0.138
28.77
1.41
1.02
BH
30.9
31.5
27.9
1.93
0.709
30.10
2.17
1.79
BK
26.7
25.5
25.8
0.62
0.236
26.00
-0.19
-0.58
BL
wi'iv: 'T-;
BM
27.9
27.3
27.6
0.30
0.118
27.60
0.73
0.35
BN
23.9
26.6
26.0
1.42
0.532
25.50
-0.48
-0.87
BO
24.9
24.2
29.9
3.11
1.233
26.33
0.00
-0.38
BS
•
BW
mmSIBMm
iiilililliii
C
28.2
26.6
24.0
2.12
0.827
26.27
-0.04
-0.42
CA
26.2
24.7
26.4
0.93
0.335
25.77
-0.33
-0.71
CE
27.0
26.7
27.1
0.21
0.079
26.93
0.35
-0.04
CG
23.8
24.3
24.9
0.55
0.217
24.33
-1.15
-1.54
CJ
23.0
24.0
24.0
0.58
0.197
23.67
-1.54
-1.92
CK
32.4
27.9
29.0
2.35
0.886
29.77
1.98
1.60
CM
.w*>XW'Wv>rWV y>* sw.
CO
5.0
5.0
5.1
0.06
0.020
5.03
•12.30
*12.68 x
CP
CQ
CS
42.1
42.9
42.6
;. s, *•> .T. < v,,k
0.158
CX
30.6
29.2
29.5
; 77" 0.74 7
0.276
29.77
1.98
6WSSSSfrVy.SS!.W.Wrf.!0!''W.^W.V.V,! A;
1.60
t
D
ihmmIA
. > 1 11 'i . if. X .
DB
22.4
23.7
24.5
1.06
0.413
23.53
-1.62
illIISIH
-2.00
DD
j''•
MMHK
DE
24.9
24.9
24.9
o.oi
0.000
24.90
-0.83
-1.21
DG
|l||glllll
mil
wmmirn^wx^
•>¦¦.>y -, ^V'' •. *
DI
25.7
26.9
24.4
1.25
0.492
25.67
-0.38
-0.77
DL
-Xi '' +- v* *
. ""¦•> " "• * '
•»> "v. X '
i« • x-jv-s- a.-'. • •y*! a ¦¦ • y
- nr;i.- ; « •r-,-
• =
No data submitted
TAG SYMBOLS
It s Above control limit
ll0 -
Insufficient data
X —
Determined to be an outlier
11 s Below control limit
JJ
-------
f.
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
— ^
26/30
Uranium (Natural)
Lab
Res. 1 Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
\V
'A ^ - v *
•••• ',.. .'.:;; .• y'- ¦;••
DO
25.2 25 3
24.6
0.38
0.138
25.03
-0.75
-1.14
DS
* " ~ 1 *" r
DT
25.7 24.0
24.1
0.95
0.335
24.60
-1.00
-1.39
DZ
33.3 32.0
34.9
1.45
0.571
33.40
4.08
3.70 tr
E
24.2 24.2
23.3
0.52
0.177
23.90
-1.40
-1.79
EB
27.7 27.2
27.2
0.29
0.098
27.37
0.60
0.21
EL
26.4 27.3
25.7
0.80
0.315
26.47
0.08
-0.31
EO
llllllltll
i|!l|||Bll!lil
aiaaiii*
A
•
ER
24.3 23.4
" 24.7
0.67
0.256
24.13
-1.27
-1.66
EV
° >' ' *
UpBllliH
liflliMISi
• '
Fry
Ipl^®
illwiillli
mmm
¦
•
FF
,,V .' ¦•¦S.'V/
i:: • ?V>¦ >?:: r i- :s^; : ;i':: v ¦ ^
ililili*®!
lliMliliii
"" 5 ••¦ '* " *{ >'
ii I; i:::: i:
M|ps£g&&
• ;
FJ
|!!||ll||i||
:i;iS;:>:i:;::i:|:;::S^
•
FL
iillippfil
imii
HUM
_
•
FN
22.4 22.0
22.7
0.35
0.138
22.37
-2.29
-2.68 '
FU
v.::•• :"•?•?:."N'1?/:. 'ti.v ¦V'v.-.-'-Y :>'','?o:v-v->%>N^>Nyv-'-v.
flSlplflttll
FZ
28.0 34.0
27.0
3.79
1.720
29.67
1.92
1.54
GE
01
-it
j^Mi
"y^r}ir$¦<'.;•'?,-
-. _r
GQ
25.2 26.3
_27.5_
1.15
0.453
26.33
0.00
-0.38 •
GT
GZ
HI
tHMI
||||pp:|||!l
••>:•••/«: ^zy«ww«t?y^5wp»
f
HK
21.0 24.7
23.4
1.88
0.728
23.03
-1.91
-2.29
HL
30.4 30.4
30.4
0.01
0.000
30.40
2.35
1.96
HP
27.7 27.6
26.6
0.61
0.217
27.30
0.56
0.17
!'HX>
1I|11||®||B|
Si^Hl
I
33.3 30.6
33.4
1.59
0.551
32.43
3.52
3.14 It
IC
Ifpiiliii;
'V's-Cft; '¦>.¦ rr^'^r'.? ¦ ^
ID
25.0 27.1
24.6
1.34
0.492
25.57
-0.44
-0.83
J
27.3 27.6
27.3
0.17
0.059
27.40
0.62
0.23
JE
25.6 25.7
30.0
2;51
0.866
27.10
0.44
0.06
' JG
, ... ., •• y--
^.s ^;/-.'/S, : "" ••" »?'.,
. • ¦• •• ' ;- '• -.-c .'-•;
i'WS^tt'S'1 »:< iwmjmm-: >
I1I1I11I
JN
23.5 23.5
^_23.8
017
0.059
23.60
-1.58
-1.96
JQ
' ',¦¦ ^"+ ^^w,v .'...y,.*:-.y.JZ
y * •••,).,. •> -J ^jS^r!
JS
27.1 27.0
27.1
0.06
0.020
27.07
0.42
0.04
:¦ JX
.¦ , ..s • ¦ ,.•¦¦...« .'".•• ."v. .\A.w..jv.fw(r-^ /hm •:.•
IlilfiliiaSlI
:*:£V;vS*^
BBilttffiSiSS
- • £:I3s*
JY
25.2 28.2
27.1
1.52
0.591
y 26.83
0^29
-0.10
K
26.5 26.9
28.2
0.89
0.335
27.20
0.50
0.12
KEl
jappMBB1
KT
20.0 21.0
20.0
0.58
0.197
20.33
-3.46 ~
-3.85 *
KX<
flliisMiiii
'is.\ \ v" > i';<:,
L
28.5 28.0
27.1
0.71
°-276
27.87
0.89
0.50
*LF:
"\ .' , .-
IliSlBiiii
., r ^
" >•¦ 'J
• =
No data submitted
TAG SYMBOLS
1! 3 Above control limit
0 —
Insufficient data
x =
Determined to be an outlier
U s Below control limit
'J
-------
27/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Uranium (Natural)
Lab Res. 1 Res. 2
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
LL
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
O
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PQ
PR
QP
QQ
QT
QU
QW
QX
QZ
RD
EF
wmm
NA
22.8
25.5
27.6
2.41
0.945
25.30
-0.60
-0.98
NH
28.1
28.7
27.7
0.50
0.197
28.17
1.06
0.67
NJ
26.0
28.0
28.0
1.15
0.394
27.33
0.58
0.19
NK
27.4
25.0
28.7
1.88
0.728
27.03
0.40
0.02
NO
27.0
28.0
29.0
1.00
0.394
28.00
0.96
0.58
NT
25.5
26.3
27.1
0.80
0.315
26.30
-0.02
-0.40
iHHRHHHnHPnB
27.8
21.3
26.8
30.8
26.7
27.5
'iff
25.2
23.2
26.8
29.5
27.1
27.4
27.8
23.°
26.5
1.50
1.04
0.17
y1 < / <; w
\ , lv ' . '•
30.3
27.0
27.8
0.66
0.21
0.21
0.512
0.374
0.059
0.256
0.079
0.079
26.93 0.35 -0.04
22.50 -2.21 -2.60
26.70 0.21 -0.17
30.20 £23 1.85
_26.93 0.35 -0.04 _
>:I-?:;/;" ''tic *5';
• '•' S>"Xi .y ¦ •• A>. • w • •/•<• '• ¥•/¦ ¦ ¦ ¦•. ,¦. ' s • V . .
27.57 0.71 . 0.33
PV
24.5
25.1
25.7
0.60
0.236
25.10
-0.71
-1.10
PW
23.8
19.2
22.9
2.44
0.906
21.97
-2.52
-2.91
Q
28.6
29.5
30.2
0.80
0.315
29.43
1.79
1.40
QC
/:y- .¦**]"
¦8111ISS
QJ
25.0
25.6
21.4
2.27
0.827
24.00
-1.35
-1.73
26.9
20.1
14,7'
25.7
24.9
26.9
22.3
15.9
26.4
24.4
26.8
19.0
15.8
26.3
25.3
0.06
1.68
0.67
0.38
0.45
0.020
0.650
0.236
0.138
0.177
26.87 0.31 -0.08
20.47 .3.39 .3.77 J
« ;
26.13
24.87
-0.12
-0.85
-0.50
-1.23
• s No data submitted
0 = Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
11" a Above control limit
U a Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
28/30
Uranium (Natural)
Lab Res. 1 Res. 2
RG
26.8
' 25.5
25.6
0.72
RK
13.1
13.3
- .'^-'12.9^
0.20
RP
26.4
26.4
26.2
0.12
RR
RU
' - ' ' t.v ,.L
'3iil®:3Cv;|
RV
> - ( / . , - ;
RZ
23.8
24.2
24.4
0.31
S
23.9
23.3
24.4
0.55
sc
25.2
27.0
25.1
1.07
SD
29.2
30.6
32.5
1.66
SF
26.9
27.2
27.3
0.21
SI
28.1
28.8
29.8
0.85
SL
26.9
26.8
25.9
0.55
SM
^ 28.6
27.0
26.9
0.95
SN
iS$
w-'tt'y-vw
5»;|?S5MS
mm
SO
24.9
27.5
25.4
1.38
SR
tlllllflfS
SS
23.3
23.0
26.5
1.94
ST
IMi
lltltlffli
sx
29.3
303
30.9
0.81
sz
25.6
25.5
25.4
0.10
T
27.0
28.9
28.4
0.98
TD
20.2
23.3
20.3
1.76
TG
' I S, '' - > " '"^,v ;
lp»iipp«l
TH
-.'!
V$0£.
TI
26.1
26.1
27.7 *
0.92
TJ
..-• \ A. 'A *^% v •
TL
33.8
->: 1' - '
66.8
26.7
15.73
TN
||l||»
TQ
25.6
'" ' 2 5 . 0
26.1
0.55
TS
23.1
23.6
24.3
0.60
TY
U
28.6
28.7
^ 28^8
ojlo
UA
||:||||ipp|
mm
UE
UK
UN
24.7
24.6
26.2
0.90
UP
18.0
20.0
21.8 _
1.90
UQ
!£*vy*'. v,",' '.'•
uw
27.4
28.3
28.5
059
UY
||®|ll|K^H
pllii:*
B|S|§t|:
VA
VC
Si
VG
/>
VH
28.1
29.7
30.0
1.02
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
0.256
0.079
0.039
25.97 -0.21 -0.60
13.10 ' ^7.64' ' -;'78.03
26.33 0.00 -0.38
Ititilll
24.13
23.87
25.77
30.77
27.13
28i90
26.53
0.118
0.217
0.374
0.650
0.079
0.335
0.197
0.335
0.512
JPBIML
wU5T, ••£¦: •/.<•¦/'¦¦¦ •;ww«*&$£$
28.70 1J7 0.98
* , •;."*: ••••/* -..v^'t** *"7^v-*'•«:£
mK&sssxsm^Kisi^tsm
25.17 -0.67 -1.06
19.93 -3.69 -4.08
. _ >ix
0.217
28.07 1.00 0.62
is-' •.: V'-^ ¦"> /.x'|/:'aV^/.^"¦""""s " '' ' "*¦¦"''' '
1.00
III
ipmniM,
&<>»$ ^ x'< •>*>> V „ >_>«««¦ t A*» •? Y"
K'-3^ c®^8|
• • « • • s.s.- v-v "
0.374 29.27 1.69 1.31
• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
II s Below control limit
-------
(c
29/30
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
Uranium (Natural)
\
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tae
VI
27.8
27.3
' 26.9 0.45
0.177
27.33
0.58
0.19
VJ
A * .. -
VM
• v
VO
26.3
27.4
26.1 0.70
0.256
26.60
0.15
-0.23
VT
S(Asy$yft-:w.
•
W
26.0
25.9
25.0 0.55
0197
25.63
0.40
-0.79
WE
"" "¦ X ¦¦ .
WF
„ ;
¦SISfll
.V * '
\ .
Iggf
WjjjT£«, -
v •
WO
' " ''
--- i
'^P-WrC.
%*'
X
28.1
32.4
23.6 4.40
2.395
28.03
0.98
0.60
Average
Data sorted by Laboratory Averaj
:e .
Taff
Lab
Average
Tag
Lab
Average
Tag
Lab
5.03
X
CO
25.10
PV
27.07
JS
13.10
X
RK
25.17
UN
27.10
JE
15.47
X
QX
25.30
NA
27.10
AL
19.93
11
UP
25.50
sz
27.13
SF
20.33
li
KT
25.50
BN
27.17
BA
20.47
li
QU
25.57
TQ
27.20
K
21.27
il
TD
25.57
ID
27.30
HP
21.70
AR
25.63
W
27.33
VI
21.97
PW
25.67
DI
27.33
NJ
22.37
FN
25.77
SC
27.37
EB
22.50
OY
25.77
CA
27.40
J
23.03
HK
25.93
SO
27.50
SM
23.20
BB
25.97
RG
27.50
AK
23.53
DB
26.00
BK
27.57
PQ
23.60
JN
26.13
QZ
27.60
BM
23.67
TS
26.27
C
27.87
L
23.67
CJ
26.30
NT
28.00
NO
23.87
S
26.33
RP
28.03
X
23.90
E
26.33
GQ
28.07
UW
23.97
BG
26.33
BO
28.10
T
24.00
QJ
26.47
EL
28.17
NH
24.13
RZ
26.53
SL
28.53
AZ
24.13
ER
26.60
VO
28.70
U
24.27
SS
26.63
TI
28.77
BG
24.33
CG
26.70
P
28.90
SI
24.60
DT
26.83 .
JY
29.23
AE
24.63
AH
26.87
QQ
29.27
VH
24.80
AW
26.93
PG
29.43
Q
24.87
RD
26.93
OS
29.67
FZ
24.90
DE
26.93
CE
29.77
CX
25.00
A
27.03
NK
29.77
CK
25.03
DO
27.03
BC
30.10
BH
• = No data submitted
TAG SYMBOLS
ft
= Above control limit
0 s Insufficient data
^
x = Determined to be an outlier
h Below control limit
-------
CRD-LV Performance Evaluation: Blind-A, 17-Oct-1995
30/30
Uranium (Natural)
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
30.17
SX
30.60
AF
33.40
It
DZ
30.20
PB
30.77
SD
39.10
X
TL
30.40
HL
32.43
It
I
42.53
X
CS
% responding labs
10- - -
Frequency distribution
% responding labs
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
—r"
+6
10-f
0
¦TP-
-6
¦B f 1 IfJ
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS ft a Above control limit
0^tos^^^^_d^a______^x_s_Dete^^Mdto^_^wUwr_____^_s_Bebwc^rolUmtJ
-------
¦United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-96/047B
April 1996
Blind-B Performance
Evaluation Study
A Statistical Evaluation of
the October 17, 1995 Data
023RSL96 COV-047B
-------
Blind-B
Performance Evaluation Study
October 17, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Blind-B; October 17,1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141
Sincerely,
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
1/44
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit, up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an eiror in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
r, '¦
2/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum remits for the
laboratory. The mean range'is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
3/44
Gross Beta
Statistical Summary 189 Participants
The known value of this nuclide is 123.5 pCi/1 with an expected precision of 18.5; the control limits
are 91.4 to 155.6; the warning regions are 91.4 to 102.1 and 144.9 to 155.6
38(20.1 %) Failed to respond •»
131(69.3 %) Within all limits
3(1.6 %) Outliers • / \hv
6(3.2 %) Out of control'
** 11(5.8 %) In warning zone
but not an outlier
r
I
but within control
Statistic
Respondents
Non-outliers
Mean
124.75
Grand Avg 123.94
Std. Dev.
34.02
14.60
Variance
1157.21
213.06
%Coef. ofVar.
27.27
11.78
% deviation of mean from known value
1.01
0.36
Norm. dev. of mean from known value
0.04
0.03
Median
123.97
123.98
% deviation of median from known value
0.38
0.39
Norm. dev. of median from known value
0.01
0.03
9(6.0 %) More than 3 norm. S.D.
11 (7.3 %) Between 2 and 3 norm. S.D.
82(54.3 %) Within 1 norm. S.D.
of known value
49(32.5 %) Between 1 and 2 norm. S.D.
-------
4/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Gross Beta
T _ 1_
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Lab
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
127.3
128.1
127.3
0.46
0.026
127.57
0.34
0.38
AE
103.3
102.0
102.4
0.67
0.042
102.57
-2.00
-1.96
AF
135.5
125.0
128.6
5.34
0.335
129.70
0.54
0.58
AH
AI
122.0
134.0
1210
7.23
0415
125.67
0.16
0.20
AJ
106.7
102.2
98.6
4.06
0.259
102.50
-2.01
-1.97
AK
117.2
104.7
110.5
6.26
0.399
110.80
-1.23
-1.19
AL
124.3
127.9
119.8
4.06
0.259
124.00
0.01
0.05
AP
126.8
124.6
126.6
1.22
0.070
126.00
0.19
0.23
AR
127.0
132.0
120.0
6.03
0.383
126.33
0.22
0.27
AU
145.6
141.8
144.4
1.94
0.121
143.93
1.87
1.91
AW
132.0
136.9
131.8
2.89
0.163
133.57
0.90
0.94
AZ
107.0
104.0
101.0
3.00
0.192
104.00
-1.87
-1.83
BA
133.2
130.4
138.9
4.33
0.271
134.17
0.96
1.00
BB
106.1
114.7
110.4
4.30
0.275
110.40
-1.27
-1.23
BC
106.3
105.8
110.6
2.64
0.153
107.57
-1.53
-1.49
BG
145.0
134.0
145.0
6.35
0.351
141.33
1.63
1.67
BH
118.7
120.1
127.4
4.67
0.278
122.07
-0.18
-0.13
BK
137.0
140.0
138.0
1.53
0.096
138.33
1.35
1.39
BL
• . ' ^
BM
125.8
127.3
129.6
1.91
0.121
127.57
0.34
0.38
BN
123.6
120.8
117.2
3.21
0.204
120.53
-0.32
-0.28
BO
110.5
105.1
114.2
4.58
0.291
109.93
-1.31
-1.27
BS
1312
138.5
135.1
3.65
0.233
134.93
1.03
1.07
BW
ti.
'V
^ Xs
•
C
122.6
123.5
125.6
1.54
0.096
123.90
0.00
0.04
CA
112.9
114.2
119.2
3.33
0.201
115.43
-0.80
-0.76
CE
125.5
138.3
128.1
6.77
0.409
130.63
0.63
0.67
CG
125.7
119.3
126.4
3.91
0.227
123.80
-0.01
0.03
CJ
120.0
120.0
120.0
0.00
0.000
120.00
-0.37
-0.33
CK
1340
139.0
1460
6.03
0.383
139.67
1.47
1.51
CM
v:r - -
CO
1.0
1.0
1.01
"0;6o--
0.000
100
-11.51
-11.47 x
CP
' -
'>Ss -
CQ
119.0
117.0
109.0
5.29
0.319
115.00
-0.84
-0.80
CS
133.8
115.6
122.5
9.19
0.581
123.97
0.00
0.04
CX
113.0
128.0
115.0
8.14
0.479
118.67
-0.49
-0.45
D
125.0
125.0
119.0
3.46
0.192
123.00
-0.09
-0.05
DB
125.0
121.0
127.0
3.06
0.192
124.33
0.04
0.08
DD
119.6
130.1
127.1
5.41
0.335
125.60
0.16
0.20
DE
110.9
111.0
111.0
0.06
0.003
110.97
-1.21
-1.17
DG
104.0
104.0
119.0
8.66
0.479
109.00
-1.40
-1.36
DI
86.9
88.5
85.4
1.55
0.099
86.93
-3.46
-3.42 U
DL
120.0
125.0
102.0
12.10
0.734
115.67
-0.77
-0.73
DM
151.0
161.0
140.0
10.50
0.67.0
150.67
2.50
2.54
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U 3 Below control limit
-------
(f
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
5/44
,
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
IX)
•
- *•••. :'r, • .
DS
112.0
107.0
111.0
2.65
0.160
110.00
-1.31
-1.26
DT
140.0
141.0
137.0
2.08
0.128
139.33
1.44
1.48
DZ
130.9
132.7
139.6
4.59
0.278
134.40
0.98
1.02
E
127.2
129.5
125.1
2.20
0.140
127.27
0.31
0.35
EB
130.2
130.0
131.2
0.64
0.038
130.47
0.61
0.65
EL
• . "v
^ I <
EO
1270
121.0
1100
8.62
0.543
119.33
-0.43
-0.39
ER
•s
EV
139.1
141.7
134.6
3.59
0.227
138.47
1.36
1.40
EX
fpinaf
m
^ ^ A A<, . in
FF
slliiliill!
¦ \ \v- j
FJ
26.0
25.0
25.8
0.53
0.032
25.60
-9.21
FL
107.0
1050
1060
100
0.064
106.00
-1.68
-1.64
FN
• '
FU
103.2
104.6
102.3
1.16
0.073
103.37
-1.93
-1.88
FZ
96.0
93.0
99.0
3.00
0.192
96.00
-2.62
-2.57
GE
121.0
126.0
104.0
11.53
0.702
117.00
-0.65
:0:61
GI
;:V \
SiilSSt
GQ
128.0
127.0
131.0
2.08
0.128
128.67
0.44
0.48
GT
461:9
447.9
490.7
21.82
1.698
466.83
32.10
32.14 x .
GZ
159.5
162.9
163.6
2.19
0.131
162.00
3.56
3.60 ft
HI
110.0
120.0
120.0
5.77
0.319
116.67
-0.68
-0.64
HK
136.6
136.1
135.6
0.50
0.032
136.10
1.14
1.18
HL
110.0
110.0
110.0
0.00
0.000
110.00
-1.31
-1.26
HP
1160
1269
1200
5.03
0.319
120.67
-0.31
-0.27
HX
I
154.1
147.5
162.4
7.47
0.476
154.67
2.88
2.92
IC
113.7
114.5
111.8
1.39
0.086
113.33
-0.99
-0.95
ID
120.1
113.6
123.3
4.94
0.310
119.00
-0.46
-0.42
J
123.8
122.3
120.6
1.60
0.102
122.23
-0.16
-0.12
«JE
120.6
139.1
135.0
9.72
0.591
131.57
0.71
0.76
JG
146.6
146.1
143.8
1.49
0.089
145.50
2.02
2.06
JN
112.6
113.4
106.1
4.00
0.233
110.70
-1.24
-1.20
JQ
169.0
162.9
162.3
3.71
0.214
164.73
3.82
3.86 It
JS
160.8
164.6
168.2
3.70
0.236
164.53
3.80
3.84 ft
JX
I..
JY
105.0
94.9
88.4
8.36
0.530
96.10
-2.61
-2.57
K
94.3
94.3
100.5
3.58
0.198
96.37
-2.58
-2.54
KE
112.8
113.7
121.0
4.50
0.262
115.83
-0.76
-0.72
KT
150.0
161.0
162.0
6.66
0.383
157.67
3.16
3.20 ft
KX
128.0
132.0
127.0
2.65
0.i60
129.00
0.47
0.51
L
140.0
135.7
141.6
3.05
0.188
139.10
1.42
1.46
LF
110.0
130.0
12?°
10.00
0639
moo
-0.37
-0.33
LL
?n- v- ;
t * <• + '' t"*
• =
No data submitted
TAG SYMBOLS
It = Above control limit
0 =
Insufficient data
X =
Determined to be an outlier
•li s Below control limit
v-
'J
-------
(,
6 / 44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Gross Beta
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LR
124.0
105.0
113.0
9.54
0.607
114.00
-0.93
-0.89
LT
119.0
122.0
124.0
2.52
0.160
121.67
-0.21
-0.17
M
117.0
119.0
119.0
1.15
0.064
118.33
-0.52
-0.48
MA
122.0
107.0
92.0
15.00
0.958
107.00
-1.59
-1.54
MF
107.5
106.3
1081
0.92
0.057
107.30
-1.56
-1.52
MP
#¦
MQ
135.0
137.0
136.0
1.00
0.064
136.00
1.13
1.17
MV
143.0
134.0
142.0
4.93
0.287
139.67
1.47
1.51
MY
N
112.3
111.9
96.0
9.30
0.520
106.73
f
CO
*7 if
-1.57
NA
150.5
145.1
124.7
13.61
0.824
140.10
1.51
1.55
"#•'A
NH
123.0
105.0
134.0
14.64
0.926
120.67
-0.31
-0.27
NJ
126.8
122.2
118.9
3.97
0.252
122.63
-0.12
-0.08
NK
146.0
141.0
142.0
2.65
0.160
143.00
1.78
1.83
NO
112.0
119.0
122.0
5.13
0.319
117.67
-0.59
-0.55
NT
126.5
126.7
126.6
0.11
0.006
126.60
0.25
0.29
O
117.2
119.0
116.9
1.14
0.067
117.70
-0.58
-0.54
OF
144.0
139.0
125.0
9.85
0.607
136.00
1.13
1.17
OS
146.2
142.0
145.0
2.16
0.134
144.40
1.92
1.96
OX
134.2
135.8
131.2
2.33
0.147
133.73
0.92
0.96
OY
104.0
104.0
104.0
0.00
0.000
104.00
-1.87
-1.83
OZ
• '
P
141.9
144.0
143.8
1.16
0.067
143.23
1.81
1.85
PA
140.3
132.9
132.8
4.30
0.239
135.33
1.07
1.11
PB
127.4
129.6
128.8
1.11
0.070
128.60
0.44
0.48
PG
1310
128.9
130.7
1.14
0.067
130.20
0.59
0.63
PI
.V., i;
iiisiMii
x>x N'JX: kww-vw-1
•<
-AJC', ¦¦ % /
• '
PM
124.0
136.8
126.3
6.82
0.409
129.03
0.48
0.52
PQ
135.7
126.2
134.0
5.07
0.303
131.97
0.75
0.79
PR
98.6
97.4
96.2
1.20
0.077
97.40
. -2.48
-2.44
PV
114.4
130.9
127.3
8.68
0.527
124.20
0.02
0.07
PW
IlllSipil
Q
1346
130.1
1364
325
0.201
133.70
0.91
0.95
QC
, /'
iHIRpI
QJ
121.0
130.0
133.0
6.24
0.383
128.00
0.38
0.42
QP
106.4
117.6
125.7
9.69
0.616
116.57
-0.69
-0.65
QQ
117.9
118.5
119.9
1.03
0.064
118.77
-0.48
-0.44
QT
112.8
134.1
122.1
10.68
0.680
123.00
-0.09
-0.05
QU
115.9
115.5
109.2
3.76
0.214
113.53
-0.97
-0.93
QW
125.4
123.5
123.1
1.23
0.073
124.00
0.01
0.05
QX
126.8
125.7
122.4
2.29
0.140
124.97
0.10
0.14
QZ
118.4
119.1
118.3
0.43
0.026
118.60
-0.50
-0.46
RD
1255
1223
128.6
3.15
0.201
125.47
0.14
0.18
RF
SsIlS
•
RG
136.0
126.0
133.0
5.13
0.319
131.67
0.72
0.76
• =
No data submitted
TAG SYMBOLS
11 h Above control limit
in
S
—')
Insufficient data
X 5
Determined to be an outlier
JJ = Below control limit
'J
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 7/44
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tap
KK
104.8
105.9
89.7
9.05
0.517
100.13
-2.23
-2.19
RP
RR
RU
130.0
111.0
1170
9.71
0.607
119.33
-0.43
-0.39
RV
RZ
132.8
126.5
127.4
3.41
0.201
128.90
0.46
0.51
S
128.4
128.4
114.8
7.85
0.434
123.87
-0.01
0.03
sc
123.1
128.0
128.4
2.95
0.169
126.50
0.24
0.28
SD
124.1
126.6
127.7
1.85
0.115
126.13
0.21
0.25
SF
136.6
138.4
137.4
0.90
0.057
137.47
1.27
1.31
SI
111.0
106.0
111.0
2.89
0.160
109.33
-1.37
-1.33
SL
118.0
123.0
120.0
2.52
0.160
120.33
-0.34
-0.30
SM
100.0
94.6
113.7
9.85
0.610
102.77
-1.98
-1.94
SN
126.8
119.9
119.6
4.07
0.230
122,10
-0.17
-0.13
SO
125.4
119.1
118.0
3.99
0.236
120.83
-0.29
-0.25
SR
114.0
106.7
104.8
4.86
0.294
108.50
-1.45
-1.40
ss
109.3
106.6
104.7
2.31
0.147
106.87
-1.60
-1.56
ST
/.if:
"if?**
f t
sx
130.4
135.2
125.9
4.65
0.297
130.50
0.61
0.66
sz
109.1
112.5
118.1
4 54
0.287
113.23
-1.00
-0.96
T
127.0
124.9
119.4
3.92
0.243
123.77
-0.02
0.02
TD
117.0
130.0
134.0
8.89
0.543
127.00
0.29
0.33
TG
92.9
88.6
91.1
2.16
0.137
90.87
-3.10
-3.06 U
TH
135.8
136.8
137.2
0.72
0.045
136.60
1.19
1.23
n
• *,
TJ
• /.y- •
•
TL
133.5
134.1
128.7
2.96
0.172
132.10
0.76
0.81
TN
131.4
139.3
129.2
5.31
0.322
133.30
0.88
0.92
TQ
116.0
116.0
124.0
4.62
0.255
118.67
-0.49
-0.45
TS
137.6
148.4
146.5
5.77
0.345
144.17
1.89
1.93
TY
121.0
118.0
119.0
1.53
0.096
119.33
-0.43
-0.39
U
121.0
111.7
126.2
7.35
0.463
119.63
-0.40
-0.36
UA
1010
103.0
100.0
1.53
0.096
101.33
-2.12
-2.08
UE
'..'5,. ' v '\S'
* * f > A ^
UK
• V
UN
142.0
135.0
144.0
4.73
0.287
140.33
1.53
1.58
UP
133.2
131.8
127.1
3.2°
0195
130.70
0.63
0.67
UQ
•vV
UW
136.1
137.2
139.2
1.57
0.099
137.50
1.27
1.31
UY
1272
129.2
122.1
3.66
0.227
126.17
0.21
_ 0.25
VA
........ -v. W
VC
¦ :• :-
< " %
VG
A ; - >
VH
101.1
97.9
111.9
7.34
0.447
103.63
-1.90
-1.86
VI
99.0
90.0
102.0
6.24
0.383
97.00
-2.52
-2.48
• =
No data submitted
TAG SYMBOLS
tt = Above control limit
0 a
Insufficient data
X s
Determined to be an outlier
U s Below control limit
'J
-------
((
8/44
CRD-LV Performance Evaluation: Blind-B,
17-Oct-1995
Gross Beta
¦s
Lab Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg)
(known) Tag
VJ
•
VM
•
VO 130.0
142.0
154.0 12.00
0.766
142.00
1.69
1.73
VT
•
W 125.0
123.0
127.0 2.00
0.128
125.00
0.10
0.14
WE 141.2
140.0
130.7 5.75
0.335
137.30
1.25
1.29
WF 136.0
143.0
148.0 6.03
0.383
142.33
1.72
1.76
WO
'"V
X 158.7
134.3
143.2 12.35
0.779
145.40
2.01
2.05
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.00
X
CO
110.97
DE
122.10
SN
25.60
X
FJ
113.23
SZ
122.23
J
86.93
U-
DI
113.33
IC
122.63
NJ
90.87
TG
113.53
QU
123.00
QT
96.00
FZ
114.00
LR
123.00
D
96.10
JY
115.00
CQ
123.77
T
96.37
K
115.43
CA
123.80
CG
97.00
VI
115.67
DL
123.87
S
97.40
PR
115.83
KE
123.90
c
100.13
RK
116.57
QP
123.97
CS
101.33
UA
116.67
m
124.00
QW
102.50
AJ
117.00
GE
124.00
AL
102.57
AE
117.67
NO
124.20
PV
102.77
SM
117.70
O
124.33
DB
103.37
FU
118.33
M
124.97
Q x
103.63
VH
118.60
QZ
125.00
W
104.00
OY
118.67
TQ
125.47
RD
104.00
AZ
118.67
CX
125.60
DD
106.00
FL
118.77
QQ
125.67
AH
106.73
MY
119.00
ID
126.00
AP
106.87
SS
119.33
TY
126.13
SD
107.00
MA
119.33
RU
126.17
UY
107.30
MF
119.33
EO
126.33
AR
107.57
BC
119.63
U
126.50
SC
108.50
SR
120.00
LF
126.60
NT
109.00
DG
120.00
CJ
127.00
TD
109.33
SI
120.33
SL
127.27
E
109.93
BO
120.53
BN
127.57
BM
110.00
HL
120.67
NH
127.57
A
110.00
DS
120.67
HP
128.00
QJ
110.40
BB
120.83
SO
128.60
PB
110.70
JN
121.67
LT
128.67
GQ
110.80
AK
122.07
BH
128.90
RZ
• = No data submitted
TAG SYMBOLS
ft = Above control limit
0 = Insufficient data
V
x == Determined to be an outlier
s Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
9/44
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
129.00
KX
134.40
DZ
140.33
UN
129.03
PM
134.93
BS
141.33
BG
129.70
AF
135.33
PA
142.00
VO
130.20
PG
136.00
*
OF
142.33
WF
130.47
EB
136.00
MQ
143.00
NK
130.50
SX
136.10
HK
143.23
P
130.63
CE
136.60
TH
143.93
AU
130.70
UP
137.30
WE
144.17
TS
131.57
«JE
137.47
SF
144.40
OS
131.67
RG
137.50
uw
145.40
•
X
131.97
PQ
138.33
BK
145.50
JG
132.10
TL
138.47
EV
150.67
DM
133.30
TN
139.10
L
154.67
I
133.57
AW
139.33
DT
157.67
IT .
KT
133.70
Q
139.67
MV
162.00
It
GZ
133.73
ox
139.67
CK
164.53
It
JS
134.17
BA
140.10
NA
164.73
466.83
it
X
JQ
GT
% responding labs Frequency distribution
10-
j- — i
-6 -4 -2 0 +2 +4
Normalized deviation of the mean from the known value
responding labs Frequency distribution
10-
Mjlilil
Ia8l I I — T I ~ "" I i I
-6 -4-2 0 +2 *4 +6
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS 11 3 Above control limit
0 s Insufficient data x = Determined to be an outlier II = Below control limit J
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
10/44
Strontium-89
Statistical Summary 189 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 5.0; the control limits
are 11.3 to 28.7; the warning regions are 11.3 to 14.2 and 25.8 to 28.7
111 (58.7 %) Failed to respond •
1(0.5 %) Outliers
1 (0.5 %) Out of control
but not an outlier
Statistic
; 69(36.5 %) Within all limits
Respondents
* 7(3.7 %) In warning zone
but within control
Non-outliers
Mean
19.87
Grand Avg 19.58
Std. Dev.
4.37
3.58
Variance
19.10
12.82
% Coef. ofVar.
22.00
18.29
% deviation of mean from known value
-0.66
-2.10
Norm. dev. of mean from known value
-0.03
-0.12
Median
19.67
19.67
% deviation of median from known value
-1.67
-1.67
Norm. dev. of median from known value
-0.08
-0.09
2(2.6 %) More than 3 norm. S.D.
7(9.0 %) Between 2 and 3 norm. S.D.
,43(55.1 %) Within 1 norm. S.D.
of known value
26(33.3 %) Between 1 and 2 norm. S.D.
-------
6 =
11/44
'
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
^
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tae
A
20.0
20.0
• 19.0
0.58
0.118
19.67
0.03 -0.12
AE
24.0
24.0
27.0
1.73
0.354
25.00
1.88 1.73
AF
22.0
190
!90
1.73
0.354
20.00
0.15 0.00
AH
•
AI
*
AJ
21.0
21.0
17.0
2.31
0.473
19.67
0.03 -0.12
AK
15.0
17.0
15.0
1.15
0.236
15.67
-1.36 -1.50
AL
18.0
21.0
22.0
208
0.473
20.33
0.26 0.12
AP
glllillipl
AR
' ' ^J
•hy
AU
41.0
42.0
43.0
1.00
0.236
42.00
7.77 7.62
' Sc^:%
AW
18.0
17.0
18.0
0.58
0.118
17.67
-0:66 -0.81
AZ
20.0
21.0
22.0
1.00
0.236
21.00
0.49 0:35
BA
25.0
21.0
23.0
2.00
°-473
23.00
1.18 1.04
BB
„ . ..... . .. ... . ..K
9"i f
BC
18.0
16.0
160
115
0.236
16.67
-1.01 -1.15
BG
^ ' \ ' ' '
BH
26.0
26.0
24.0
115
0.236
25.33
1.99 1.85
BK
?£•- 'k-',!-V':;t-v1!# t"
BL
24.0
21.0
20.0
2.08
0.473
21.67
0.72 0.58
BM
24.0
25.0
28.0
2.08
0.473
25.67
2.11 1.96
BN
' • -
BO
21.0
20.0
20.0
0.58
0.118
20.33
0.26 0.12
BS
V:?...
\*<>
• -'
BW
5S&1II!Si
/ !
•
C
20.0
22.0
20.0
1.15
0.236
20.67
0.38 0.23
CA
200
17.0
20.0
173
0.354
19.00
-0.20 -0.35
CE
S 'fS- v
V*'4;'
CG
22.0
22.0
20.0
1.15
0.236
21.33
0.61 0.46
CJ
20.0
22.0
20.0
1.15
0.236
20.67
0.38 0.23
CK
17.0
18.0
18.0
0.58
0.118
17.67
-0.66 -0.81
CM
i::
CO
fglifW
CP
28.0
31.0
32.0
2.08
0.473
30.33
3.73 3.58
it'
CQ
18.0
18.0
17.0
0.58
0.118
17.67
-0.66 -0.81
CS
18.0
18.0
18.0
0.00
0.000
18.00
-0.55 -0.69
CX
21.0
27.0
22.0
3.21
0.709
23.33
1.30 1.15
D
Mjl: ipM
DB
' ' '*¦"
v' -
• ' s
DD
21.0
21.0
21.0
0.00
0.000
21.00
0.49 0.35
DE
22.0
22.0
23.0
0.58
0.118
22.33
0.95 0.81
DG
21.0
24.0
210
1.73
0.354
22.00
0.84 0.69
DI
"• V:""'"':;. '' .:\v:
vv -r.- % ^ , fS ¦. ., "XJ ^
• -0
DL
; ' , .
- " '
'
DM
• '
.»
• =
No data submitted
TAG SYMBOLS
IT 3 Above control limit
hi
&
—')
Insufficient data
X 5
Determined to be an outlier
11 a Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
12/44
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
DO
19.0
180
210
i.53
0.354
19.33
-0.09
-0.23
DS
DT
18.0
19.0
19.0
0.58
0.118
18.67
-0.32
-0.46
DZ
21.0
21.0
20.0
0.58
0.118
20.67
0.38
0.23
E
18.0
18.0
21.0
1.73
0.354
19.00
-0.20
-0.35
EB
20.0
25.0
17.0
4.04
0.945
20.67
0.38
0.23
EL
23.0
24.0
23.0
0.58
0.118
23.33
1.30
1.15 ^
EO
-
5 r*T^
ER
v,.V
;-** * ,7/
EV
• . "A1-.
>
^•7'-:-7- :7;/
,
¦¦ . ^ -v.
>'i," ' - ¦-
EX
' 7 ;
' r * X '
FF
' , ,' vr^ '
^ v .s. :¦*¦¦ .¦- .>¦'¦ J*-:.*
rZ; ¦. »^r
FJ
"% , -
> - ' Jv " ~
-A - * •V''^
FL
¦v •••;
%«¦ ,
FN
*
t s ' ">V * "•
¦ 7.'$&}¦'#>>
FU
21.0
21.0
21.0
0.00
0.000
21.00
0.49
0.35
FZ
18.0
18.0
20.0
1.15
0.236
18.67
-0.32
-0.46
GE
GI
kz);/
- V£? w y Vv f'. :¦ '
-5"v> ^
GZ
7:7ffi7#!§7
, - ^
' 7 7>i|
HI
- ' v ' *
:77;7777^
<0 \ *x ^
¦V v \ '
%v-- ' *" \
'~'-7
HK
170
160
16.0
0.58
0.118
J6.33
-1.27
HL
"" '
v *\
HP
22.0
260
25.0
2.08
°-473
24.33
1.65
1.50
HX
71* -
~ , ' '". A
^SiiSSilf
S •• " V.
vm-W w/- w.^w(jw» : •: :-v.; •; "tvsww«
•v
I
20.0
21.0
21.0
0.58
0.118
20.67
0.38
0.23
IC
19.0
18.0 _
18.0
0.58
0.118
18.33
-0.43
-0.58
ID
> ,
•" 4:
J
20.0
21.0
21.0
0.58
0.118
20.67
0.38
0.23
cJE
14.0
14.0
13.0
0.58
0.118
13.67
-2.05
-2.19
JG
7 _ K
""vyrrf.yr* ¦: v y
7 *¦' , !
JN
. '' : ' •
x * <-J *\ '
^ss.' vT ,-'i
' * 1 *"H
JQ
¦ v/-'
is ,<¦ -C 4 •. /
JS
20.0
24.0
25.0
2.65
0.591
23.00
1.18
1.04
JX
Eppff!
pif^jg
•
JY
17.0
18.0
19.0
1.00
0.236
18.00
-0.55
-0.69
K
26.0
23.0
24.0
153
0.354
24.33
1.50
KE
KT
777 7-7
- •
.
/-¦VS'j&ys 'v^ •* :.•:<•¦• ;;•> > ¦ •
^; ^<7
KX
16.0
18.0
13.0
2.52
0.591
15.67
-1.36
-1.50
L
22 0
19.0
21.0
1.53
0.354
2°.67
0.23
LF
- ,
- v j;,
LL
•*
*- • -H
• s No data submitted
0 = Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
•11 s Below control limit
-------
(s
N
13/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-89
\
Lab
Res. 1
Exper. Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma (R + SR)
Average
(grand-avg) (known) Tag
LR
- •
LT
22.0
21.0
24.0
1.53 0.354
22.33
0.95 0.81
M
17.0
18.0
19.0
1.00 0.236
18.00
-0.55 -0.69
MA
•
MF
¦v;:; 7-"-; ' • • •
MP
• v. V: •..•'/ ;
>> - *,
MQ
23.0
18.0
18.0
2.89 0.591
19.67
0.03^ -0.12
MV
-
'' v-) ' " y „ ' '' ^5' ^ ' '
MY
' ' V v '
I5?"
, s v / "%• ^ ^ s
N
*4-? f A f" * ' - ^
NA
' %
X /- % / ',
I'-f'v/-'"' t'' ~ V."'^
Xh\J'V< < s ' ' A-,
NH
--
" " I. "1.
*
NJ
29.0
28.0
260
1.53 0.354
27.67
2.80^ \ ^ 2.66 ^
NK
' "S. V
, 'v '
' ' ^ --,s' '
" '-'i'-' "i- r
' --- -v.-
NO
NT
190
20.0
22.0
1.53 0.354
20.33
0.26 0.12
0
A ^ -
V-v . ' •.. • - • • .-.V" ¦•; --K
V
V'v's' if •. s \
*• f i-" > ^ -s'*" " f -C <* #
x
OF
;"';' : :
/.-v..-v "¦
"" "5" ' '7'- ^
¦ f , -,¦" ¦ ,''* ™
S ' v."" ,4 A "¦ V.%N
<¦ '%w ^ '
' ^\isv " ,<¦ j.
OZ
* « '
V," \'v
P
' ^ -1 V s
* 1, * '
J 'JV-j " wv, " " v
*>¦. * J-.K? .•& <<*-£ s, <• < A /
PA
- ' s %
1 ; ; i
PB
20.0
19.0
20.0
0.58 0.118
19.67
0.03 -0.12
PO
*S 4 A ^ > v "v A>
PI
PM
¦, <{ >
'¦ *'
- -¦?;«,«->
PR
,
iSiJIHK
' ' 5 ' <'
PV
15.°
11.0
14.0
2.08 0.473
13.33
-2.16 -2.31
PW
,, "" '-'J
'v : '
„-r"'" ^ --
Q
19.0
20.0
23.0
2.08 0.473
20.67
0.38 0.23
QC
, '¦ '
QJ
¦ •
• ' ' > 7/v-v;'•/-;
QP
" r -
^ \^v \A ^ s-
" ^ ^ V s '' S S-, -
QQ
- 5 '"'"''v'i' ~7' >
- ; --r ,
; .vt :!v • -•;^
QT
QU
14.0
16.0
15.0
1.00 0.236
15.00
-1.59 -1.73
QW
140
16.0
140
1.15 0.236
14.67
-1.70 -1.85
QX
V';'"
-.j ¦
i(<> > { v 7i <• >•} „ > * . V ' V A O. s
, > , s'*& >\*
QZ
RD
19.0
17.0
19.0
1.15 0.236
18.33
-0.43 ^0.58
t4, 7 >» '*•' ^
RF
'-C"~
, "V* ^ iM' try',-*]- -
RG
-
* <• / * * 0.>
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
in
Q
Insufficient data
X 3
Determined to be an outlier
Ji = Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 14/44
Strontium-89
*
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RK
•
• ^
RP
#.v:
RR
RU
RV
_• v- • _
•:^v; • r
RZ
•
S
19.0
18.0
18.0
0.58
0.118
18.33
-0.43
-0.58
sc
23.0
25.0
23.0
1.15
0.236
23.67
1.42
1.27
SD
13.0
17.0
13.0
2.31
0.473
14.33
-1.82
-1.96
SF
15.0
16.0
20.0
2.65
0.591
17.00
-0.89
-1.04
SI
190
20.0
210
100
0.236
20.00
0.15
0.00
SL
w Y.v~ * '
*
SM
280
26.0
24.0
200
0.473
26.00
2.22
2.08
SN
. v;
<*¦' *v „ ^
„ cs % C'v \
< -
•
so
X ^
* '¦> * << x- i }
v' ^ W
,:
SR
v.:;^
¦K ¦ V A
SS
16.0
14.0
17.0
1.53
0.354
15.67
__a.36_
-i.50
ST
I-:'^
WCVf»W!K!K'
SX
i,» '">7
sz
;^|FC
- ?**, ' *
•
T
21.0
20.0
21.0
0.58
0.118
20.67
0.38
0.23
TD
22.0
25.0
34.0
6.24
1.795
27.00
2.57
2.42
TG
* S*
>*A':
TH
' ) V-
• < > •' • ¦*
<". W Jk>
n
160
17.0
17.0
0.58
0.118
16.67
•101
-1.15
TJ
- *' ___ v "v
• :
TQ
150
14.0
15.0
0.58
0118
14.67
-1.70
-1.85
TS
*
, . *¦<
TY
illWSS$i:i
filliliiil
U
16.0
17.0
18.0
1.00
0.236
17.00
-0.89
-1.04
UA
%'
UE
-
••+-». ' '?/» V-1' s.
v<
UK
' - - •••
> ' \ /
:-K>\
•v.^ •<
'¦
* *
UN
16.0
16.0
13.0
1.73
0.354
15.00
-1.59
-1.73
UP
15.0
14.0
15.0
0.58
0118
1467
-1.70
-i.85
UQ
uw
170
180
16.0
1.00
0.236 .
17.00
-0.89
-i.04
UY
ai^spi
• -
VA
VC
'¦
VG
' V
^-V
«.
VH
.'' .
c.
VI
19.0
8.0
11.0
5.69
1.570
12.67
-2.39
-2:54
• s No data submitted TAG SYMBOLS 1! = Above control limit
0 s Insufficient data x = Determined to be an outlier 11 s Below control limit
-------
15/44 CRD-LV Performance Evaluation: Blind-B,
17-Oct-1995
— ^
Strontium-89
Exper.
Rng anal
Normalized deviation
Lab Res. 1 Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VJ
VM
A ° •
VO
V
•
VT
- "•
w 16.0 19.0
20.0 2.08
0.473
18.33 -0.43
-0.58
WE
v;: .
»
WF 14.0 16.0
16.0 1.15
0.236
15.33 -1.47
-1.62
WO
' ¦
* ,
yj-*---'ji*
X 16.0 15^0
11.0 2.65
0.591
14.00 -1.93
-2.08
Average Tag
Data sorted by Laboratory Averai
;e
Lab
Average
Ta
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 16/44
Strontium-89
% responding labs Frequency distribution
10-
yll ny —
-2 0 +2
•A -4 *2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
m
10-
M
fUnfl IUU
-'6 ' -4 ' -2 jS +2 - +4 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct>1995
17/44
Strontium-90 Statistical Summary 189 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 5.0; the control limits
are 1.3 to 18.7; the warning regions are 1.3 to 4.2 and 15.8 to 18.7
104(55.0 %) Failed to respond;
1(0.5 %) Outliers
Statistic
81(42.9 %) Within all limits
Respondents
3(1.6 %) In warning zone
but within control
Non-outliers
Mean
10.33
Grand Avg 10.18
Std. Dev.
2.40
1.97
Variance
5.77
3.88
% Coef. of Var.
23.25
19.35
% deviation of mean from known value
3.33
1.83
Norm. dev. of mean from known value
0.14
0.09
Median
10.00
10.00
% deviation of median from known value
0.00
0.00
Norm. dev. of median from known value
0.00
0.00
1 (1.2 %) More than 3 norm. S.D.
3(3.5 %) Between 2 and 3 norm. S.D.
/
76(89.4 %) Within 1 norm. S.D.
of known value
5(5.9 %) Between 1 and 2 norm. S.D.
-------
A
18/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-90
N
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tae
A
9.0
9.0
9.0
0.00
0.000
9.00
-0.41
-0.35
AE
13.0
. 15.0
16.0
1.53
0.354
14.67
1.55
1.62
AF
9.0
9.0
9.0
0.00
0.000
9.00
-0.41 ^
-0.35
AH
' s < ^ <
' •
AI
liilpl:; I-:''.
AJ
8.0
8.0
10.0
1.15
0.236
8.67
-0.53
-0.46
AK
12.0
12.0
13.0
0.58
0.118
12.33
0.75
0.81
AL
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
AP
•
AR
' '¦
\*\
MllllllB
/ • ,
AU
17.0
13.0
19.0
3.06
0.709
16.33
2.13
2.19
AW
12.0
13.0
14.0
1.00
0.236
13.00
0.98
1.04
AZ
11.0
11.0
11.0
0.00
0.000
11.00
0.28
0.35
BA
10.0
10.0
9.0
0.58
0.118
9.67
-0.18
-0.12
BB
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
BC
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
BG
10.0
8.0
11.0
1.53
0.354
9.67
-0.18
-0.12
BH
9.0
10.0
10.0
0.58
0.118
9.67
-0.1.8
-0.12
BK
J V
BL
7.0
8.0
8.0
0.58
0.118
7.67
-0.87
-0.81
BM
9.0
9.0
11.0
1.15
0.236
9.67
-0.18
-0.12
BN
' -
•
BO
10.0
10.0
100
0.00
0.000
10.00
-0.06
0.00
BS
•V;
< •" t ' A - ' '
s ' -
BW
VV'
, A
C
10.0
11.0
10.0
0.58
0.118
10.33
0.05
0.12
CA
11.0
11.0
10.0
0.58
0.118
10.67
0.17
0.23
CE
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
CG
12.0
11.0
12.0
0.58
0.118
11.67
0.51
0.58
CJ
9.0
9.0
10.0
0.58
0.118
9.33
-0.29
-0.23
CK
13.0
12.0
13.0
0.58
o;ii8
1.2.67
0.86
0.92
CM
V '
s^" V 'V
illlliiiitt
my
CO
9.0
no
11.0
1.15
0.236
10.33
0.05
0.12
CP
9.0
9.0
8.0
0.58
0.118
8.67
-0.53
-0.46
CQ
9.0
10.0
11.0
1.00
0.236
10.00
-0.06
0.00
CS
23.0
24.0
22.0
1.00
0.236
23.00
4.44
4.50
*' Xi *;
CX
11.0
8.0
11.0
173
0.354
10.00
-0.06
0.00
D
• ' > : '
mmm
DB
s' > ' * * * \» '
iiiiiwiil
-m
DD
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
DE
10.0
11.0
11.0
0.58
0.118
10.67
0.17
0.23
DG
8.0
9.0
8.0
0.58
0.118
8.33
-0.64
-0.58
DI
m
DL
•
DM
*
• =
No data submitted
TAG SYMBOLS
It = Above control limit
[0-
Insufficient data
X =
Determined to be an outlier
¦U = Below control limit
/J
-------
^
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 19/44
Strontium-90
N
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
9.0
9.0
8.0
0.58
0.118
8.67
-0.53
-0.46
DS
^;.Vi v;"-
DT
12.0
10.0
10.0
1.15
0.236
10.67
0.17
0.23
DZ
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
E
12.0
13.0
13.0
0.58
0.118
12.67
0.86
0.92
EB
10.0
8.0
10.0
1.15
0.236
9.33
-0.29
-0.23
EL
11.0
9.0
9.0
1.15
0.236
9.67
-0.18
•°:12
EO
/ • ?
ER
•'••''•/J.
>' •> *vs "¦ y
, ' " s/ '• <*&&&&$&
FJ
\
•"v"1'"*•'
FL
IIHIIS;
UllSSWIff
•
FN;
•
FU
9.0
9^0
9.0
0.00
0.000
9X)0
-0.41
-0.35
FZ
8.0
9.0
9.0
0.58
0.118
8.67^
-0.53
-0.46
GE
Vv':;- . '.:x:
¦ -
V. > " < V
~*/
GI
"J
• ^|S
GQ
8.0
8.0
8.0
000
0.000
8.00
-0.76
-0.69
GT
rSSSPIRil
-
GZ
{ -
*- * 4
HI
« - \
•
HK
9.0
9.0
9.0
0.00
0.000
9.00
-0.41
-0.35
HL
i ^: W£m
HP
12.0
10.0
11.0
1.00
0.236
11.00
0.28
0.35
HX
% ¦¦ ? -
* f>Mt ' " S >«
•5. V "
I
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
IC
8.0
10.0
10.0
1.15
0.236
9.33
-0.29
-0.23
ED
J
12.0
11.0
11.0
0.58
0.118
11.33
0.40
0.46
eJE
6.0
8.0
9.0
1.53
0.354
7.67_
-0.87
-0.81
JG
SfSSBS
•
JN
"Vi . :Vi
-v% *
- As ^
v W
JQ
*
-------
20/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-90
Lab
Res. 1 Res. 2
Exper. Rng anal
Res. 3 . Sigma (R + SR)
Normalized deviation
Average fgrand-avg) (known) Tag
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
NA
NH
NJ
NK
NO
NT
O
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PQ
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QZ
RD
RF
RG
12.0
15.0
7.0
7.0
10.0
10.0
40
110
9.0
9.0
9.0
7.0
13.0
15.0
10.0
8.0
10.0
11.0
6.0
11.0
8.0
8.0
8.0
8.0
11.0
18.0
10.0
1.00
1.73
8.0
10.0
0.58
0.00
10.0
8.0
120
9.0
8.0
8.0
8.0
0.58
0.58
0.58
0.58
0.236
0.354
1.73 0.354
12.00
16.00
9.00
0.63
2.02
-0.41
0.69
2.08
-0.35
r»>s
0.118
0.000
7.67 -0.87 -0.81
10.00 -0.06 0.00
• :
• :
• i
• :
• :
0.58 0.118
2.00 0.473
0.58 0.118
10.33 0.05 0.12
IgfSHnWi
fmrnMAmmmmmmmm
0.118
0.118
0.118
0.118
6.00
11.33
8.67
8.33
8.33
7.67
-1.46 -1.39
0.40 0.46
\ ' C;'<* . ' •
-0.53 -0.46
I \\ >s' f&K>Z, 1 t
J * > M A .
-0.64 -0.58
-0.64 >0.58
-0.87 -0.81
' v -* - \
• = No data submitted
0 s Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
!!¦ = Below control limit
-------
({
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
-s
21/44
'
Strontium-90
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
UK
-
RP
•. •. ' -¦ . '•)«»<.>
RR
- , •>-/;
RU
,, * f'
RV
' ¦ I/"'':
• •*„
RZ
*.j. • 4i
S
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
sc
12.0
12.0
11.0
0.58
0.118
11.67
0.51
0.58
SD
10.0
8.0
10.0
1.15
0.236
9.33
-0.29
-0.23
SF
15.0
15.0
13.0
1.15
0.236
14.33
1.44
1.50
SI
9.0
9.0
80
0.58
0.118
8.67
-0.53
-0.46
SL
- . > •-
SM
11.0
11.0
12.0
0.58
0.118
11:33
0.40
0.46
SN
iilSISSii
- •
•
SO
•
SR
-
• ¦
ss
11.0
12.0
11.0
0.58
0.118
11.33
0.40
0.46
ST
IStlllilll
*
•
SX
• VMt'fj
sz
10.0
11.0
11.0
0.58
0.118
10.67
0.17
0.23
T
10.0
9.0
9.0
0.58
0.118
9.33
-0.29
-0.23
TD
10.0
11.0
8.0
1.53
0.354
9.67
"91®.
-0.12
TG
< - # "C
TH
^ - \
TI
9.0
10.0
9.0
0.58
0.118
9.33
-0.29
-0.23
TJ
• ,• •
¦ i':
v • v.- ¦*
¦¦ f- .y
TL
12.0
100
n.o
1.00
0.236
H.00
0;28
0.35
TN
T'c*
TQ
9.0
9.0
9.0
0.00
0.000
9.00
-0.41
-0.35
TS
'"i * ' *
' '» ' 'i
•v 'Vs*, % *
>v -vS ^
~ ¦.¦J-'* r-*T-
TY
^ -v 5 ^ v'
U
10.0
1.0.0
9.0
0.58
0.118
9.67
-0.18
-0.12
UA
> * K t, V i\
UE
' ^ i." ^ :
• •
UK
UN
11.0
10.0
11.0
0.58
0.118
10.67
0.17
0.23
UP
10.0
10.0
10.0
0.00
0.000
10.00
-0.06
0.00
UQ
* V
uw
8.0
10.0
9.0
1.00
0.236
9.00
-0.41
-0.35 ^
UY
, " " / mTP
- v '
; ' v
VA
VC
"* * /
. . -v.5- . -".^V
VG
. ¦. ..;:
"¦> x
~ >
VH
v. - *
VI
8.0
9.0
7.0
1.00
0.236
8.00
-0.76
-0 69
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 a
Insufficient data
X 3
Determined to be an outlier
II s Below control limit
v
-y
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-90
Lab
Res. 1 Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VJ
VM
\< 's * "
VO
8.0 12.0
9.0 2.08
0.473
9.67 -0.18
-0.12
VT
W
10.0 9.0
9.0 0.58
0.118
9.33 -0.29
-0.23
WE
US " '#!¦
WF
18.0 17.0
17.0 0.58
0.118
17.33 2.48
2.54
WO
X
14.0 14.0
17.0 1.73
0.354
15.00 1.67
1.73
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag Lab
6.00
PV
9.33
SD
10.33
JY
7.67
QZ
9.33
IC
10.33 •
CO
7.67
Nd-
9.33
EB
10.33
C
7.67
JE
9.33
CJ
10.67
UN
7.67
BL
9.67
VO
10.67
sz
8.00
VI
9.67
U
10.67
DT
8.00
GQ
9.67
TD
10.67
DE
8.33
QW
9.67
K
10.67
CA
8.33
QU
9.67
EL
11.00
TL
8.33
DG
9.67
BM
11.00
HP
8.67
SI
9.67
BH
11.00
AZ
8.67
QJ
9.67
BG
11.33
ss
8.67
JS
9.67
BA
11.33
SM
8.67
FZ
10.00
UP
11.33
Q
8.67
DO
10.00
S
11.33
J
8.67
CP
10.00
NT
11.67
sc
8.67
AJ
10.00
KX
11.67
CG
9.00
UW
10.00
I
12.00
LT
9.00
TQ
10.00
DZ
12.33
AK
9.00
MQ
10.00
DD
12.67
E
9.00
L
10.00
CX
12.67
CK
9.00
HK
10.00
CQ
13.00
AW
9.00
FU
10.00
CE
14.33
SF
9.00
AF
10.00
BO
14.67
AE
9.00
A
10.00
BC
15.00
X
9.33
W
10.00
BB
16.00
M
9.33
TI
10.00
AL
16.33
AU
9.33
T
10.33
PB
17.33
23.00
WF
x CS
• = No data submitted
TAG SYMBOLS
11 = Above control limit
0 = Insufficient data
*
x = Determined to be an outlier
li s Below control limit
jj
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
23/44
Strontium-90
% responding labs Frequency distribution
20-
10-
i i i i I " i* i i m i i
-6 -4 -2 0 +2 +4 +4
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
20-
10-
o
i i i 1 1 —r—-T—-t ¦¦ f 1 —i—¦ 1 1—
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
24/44
Cobalt-60 Statistical Summary 189 Participants
The known value of this nuclide is 49.0 pCi/1 with an expected precision of 5.0; the control limits
are 40.3 to 57.7; the warning regions are 40.3 to 43.2 and 54.8 to 57.7
60(31.7 %) Failed to respond %
13(6.9 %) Outliers <
Statistic
.111 (58.7 %) Within all limits
Respondents
5(2.6 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
49.96
9.73
94.67
19.48
1.96
0.10
49.67
1.36
0.07
Grand Avg 49.26
2.75
7.59
5.59
0.53
0.09
49.67
1.36
0.24
13(10.1 %) More than 3 norm. S.D.
5(3.9 %) Between 2 and 3 norm. S.D.'
.86(66.7 %) Within 1 norm. S.D.
of known value
25(19.4 %) Between 1 and 2 norm. S.D.
-------
/f=
25/44
>¦
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cobalt-60
'
T 1
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Lab
Sigma
(R + SR)
Average
(grand-avg) (known) Tae
A
42.0
45.0
44.0
1.53
0.354
43.67
-1.94
-1.85
AE
47.0
51.0
46.0
2.65
0.591
48.00
-0.44
-0.35
AF
47.0
46.0
49.0
1.53
0.354
47.33
-0.67
-0.58
AH
46.0
44.0
44.0
1.15
0.236
44.67
-1.59
-i.50
AI
-
AJ
49.0
50.0
50.0
0.58
0.118
49.67
0.14
0.23
AK
48.0
48.0
48.0
0.00
0.000
48.00
-0.44
-0.35
AL
51.0
45.0
50.0
3.21
0.709
48.67
-0.21
-0.12
AP
48.0
49.0
500
1.00
0.236
49.00
-0.09
0.00
AR
*' '->:<• v ¦¦
AU
49.0
51.0
51.0
1.15
0.236
50.33
0.37
0.46
AW
49.0
48.0
47.0
1.00
0.236
48.00
-0.44
-0.35
AZ
46.0
45.0
52.0
3.79
0.827
47.67
-0.55
-0.46
BA
55.0
49.0
51.0
3.06
0.709
51.67
0.83
0.92
BB
51.0
49.0
50.0
1.00
0.236
50.00
0.26
0.35
BC
47.0
47.0
46.0
0.58
0.118
46.67
-0.90
-0.81
BO
67.0
85.0
65.0
11.02
¦ 3.596
72.33
7.99
8.08
- X ¦
BH
52.0
51.0
54.0
1.53
0.354
52.33
1.06
1.15
BK
52.0
52.0
52.0
0.00
0.000
52.00
0.95
1.04
BL
49.0
51.0
49.0
1.15
0.236
49.67
0.14
0.23
BM
50.0
49.0
52.0
1.53
0.354
50.33
0.37
0.46
BN
48.0
47.0
49.0
1.00
0.236
48.00
-0.44
-0.35
BO
48.0
51.0
50.0
153
0.354
49.67
0.14
0.23
BS
WiMrM; ¦'
v
•
BW
C
51.0
50.0
50.0
0.58
0.118
50.33
0.37
0.46
CA
51.0
51.0
49.0
1.15
0.236
50.33
0.37
0.46
CE
54.0
55.0
54.0
0.58
0.118
54.33
1.76
1.85
CO
lllilli
* O
CJ
50.0
56.0
55.0
3.21
0.709
53.67
1.53
1.62
CK
51.0
51.0
53.0
1.15
0.236
51.67
0.83
0.92
CM
54.0
53.0
58.0
2.65
0.591
55.00
1.99
2.08
CO
50.0
52.0
54.0
2.00
0.473
52.00
0.95
1.04
CP
52.0
51.0
47.0
2.65
0.591
50.00
0.26
0.35
CQ
49.0
50.0
52.0
1.53
0.354
50.33
0.37
0.46
C9
59.0
60.0
58.0
1.00 ,
0.236
. 59.00
3,37
3.46
>TXv-
CX
n
49.0
48.0
49.0
0.58
0.118
48.67
-0.21
-0.12
\ -V ¦*
V S ^ <
MJ
DB
/ >
w <*¦>,?
*\*
SZ • ,*
DD
47.0
47.0
47.0
0.00
0.000
47.00
-0.78
-0.69
DE
46.0
47.0
48.0
1.00
0.236
47.00
-0.78
-0.69
DG
49.0
52.0
52.0
1.73
0.354
51.00
0.60
0.69
DI
:i".y .
•
DL
47.0
52.0
48.0
2.65
0.591
49.00
-0.09
0.00
DM
48.0
48.0
49.0
0.58
0.118
• 48.33
-0.32
-0.23
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
k0-
Insufficient data
x =
Determined to be an outlier
s Below control limit
-------
ft
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
«
26/44
Cobalt-60
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
DO
51.0
52.0
56.0
2.65
0591
53.00
1.30
1.39
DS
DT
48.0
48.0
48.0
0.00
0.000
48.00
-0.44
-0.35
DZ
42.0
43.0
41.0
1.00
0.236
42.00
-2.52
-2.42
E
46.0
48.0
48.0
1.15
0.236
47.33
-0.67
-0.58
EB
52.0
51.0
51.0
0.58
0.118
51.33
0.72
0.81
EL
47.0
47.0
48.0
0.58
0.118
47.33
-0.67
-0.58
EO
'v' -y
S-.V » ^ ^ ,
•
ER
'" - ---- ?
EV
' \
V -
.
A v _
EX
55.0
59.0
57.0
2.00
0.473
57.00
2.68
2.77
.,
FF
^ ' ' ' ' ^ ** ''
- ' <
FJ
52.0
49.0
55.0
3.00
0.709
52.00
0.95
1.04
FL
49.0
49.0
53.0
2.31
0.473
50.33
0.37
0.46
FN
FU
50.0
51.0
49.0
1.00
0.236
50.00
0.26
0.35
FZ
53.0
52.0
53.0
0.58
0.118
52.67
1.18
1.27
GE
53.0
48.0
59.0
5.51
1.570
53.33
1.41
1.50
GI
44.0
49.0
48.0
2.65
0.591
47.00
-0.78
-0.69
GQ
48.0
48.0
48.0
0.00
0.000
48.00
-0.44
-0.35
GT
.. • • •
• ^
GZ
• ^
HI
34.0
38*0
V 42:0
4.00
0.945
38.00
-3,90
-3.81
_ X
HK
51.0
49.0
50.0
1.00
0.236
50.00
0.26
0.35
HL
49.0
49.0
49.0
0.00
0.000
49.00
-0.09
0.00
HP
45.0
44.0
44.0
0.58
0.118
44.33
-1.71
-1.62
HX
84.0
84.0
.... 84.0
0.00
0.000
" 84 00'
& V ' ^
12.03
12 12
X:|S
I
52.0
49.0
48.0
2.08
0.473
49.67
0.14
0.23
IC
50.0
49.0
53.0
2.08
0.473
50.67
0.49
0.58
ID
v;
¦f,::
cwcrvwaws-
J
49.0
51.0
50.0
1.00
0.236
50.00
0.26
0.35
JE
45.0
48.0
47.0
1.53
0.354
46.67
-0.90
-0.81
JG
49.0
47.0
52.0
2.52
0.591
49.33
0.02
0.12
JN
< v" ^ *
JQ
JS
500
51.0
51.0
0.58
0118
50.67
0.49
0.58
JX
"•S
' 1 •'<.£?
JY
52.0
52.0
51.0
0.58
0.118
51.67
0.83
0.92
K
470
43.0
45.0
200
0.473
45.00
-1.48
-1.39
KE
•<<
KT
•',> 4
•> ^
.A4
•s.
KX
50.0
49.0
51.0
1.00
0.236
50.00
0.26
0.35
L
54.0
55.0
54.0
0.58
0.118
54.33
1.76
1.85
LF
51.0
50.0
47.0
2.08
0.473
49.33
0.02
0.12
LL
• yy~:7:r >:V':
'7 "
• =
No data submitted
TAG SYMBOLS
11 s Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
1/
-------
ft
27/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
^
Cobalt-60
-
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LR
37.0
53.0
50.0
8.50
2.695
46.67
-0.90
-0.81
LT
49.0
49.0
51.0
1.15
0.236
49.67
0.14
0.23
M
48.0
48.0
51.0
1.73
0.354
49.00
-0.09
0.00
IMA
48.0
52.0
47.0
2.65
0.591
49.00
-0.09
0.00
MF
y:i:b i: v V:: ¦ ;'/V\
*
MP
50.0
52.0
49.0
1.53
0.354
50.33
0.37
0.46
MQ
54.0
47.0
45.0
4.73
1.120
48.67
-0.21
-0.12
MV
21.0
19.0
26.0
, 3:06
0.709
21.67
: -9.56
-9.47
MY
; 60.0
59.0
60.0
0.58
0,118
59.67
3.60
3.70
^X'
N .
lliiliil!
liillliil
X5 ' ••
SiSllfHHil
/ • ^
NA
illlillil
i1'$ ,;K:''¦?:
SPIIflflll!
i||i||||||||
-
NH
5 ' * ' , '
: i Hii&i
Slliillll!
, {*£"
NJ
46.0
48.0
46.0
1.15
0.236
46.67
-0.90
-0.81
NK
42.0
38.0
42.0
2.31
0.473
40.67
-2.98
-2.89
NO
52.0
53.0
54.0
100
0.236
53.00
1.30
1.39
NT
#fi!^
- V";
O
52.0
52.0
50.0
1.15
0.236
51.33
0.72
0.81
OF
I15^B8
> : *v -
OS
T" ")¦ ' '
• -
OX
OY
WSm^W^
IllllllliW
' V
OZ
¦¦ •
P
36.0
39.0
32.0
3.51
0.827
35.67 ;
-4.71
-4.62
X
PA
ililSMI
lllWfe#
lllllilllll
PB
48.0
49.0
48.0
0.58
0.118
48.33
-0.32
-0.23
PG
PI
53.0
48.0
53.0
2.89
0.591
51.33
0.72
0.81
PM
52.0
54.0
55.0
1.53
0.354
53.67
1.53
1.62
PQ
51.0
51.0
50.0
0.58
0.118
50.67
0.49
0.58
PR
|V:v:p;p||pg||
•
PV
48.0
51.0
45.0
3.00
0.709
48.00
-0.44
-0.35
PW
48.0
49.0
48.0
0.58
0.118
48.33
-0.32
-0.23
Q
48.0
48.0
48.0
0.00
O.OOO
48.00
-0.44
-0.35
QC
.
ri{
> . A
IIII|lli|lll|!
S'lP'* K; '¦
t 5;
¦f
QJ
2.0
2.or
2.0
" 0.00
0.000
2.00
-16.37
-16.28
sX* "
QP
48.0
47.0
46.0
1.00
0.236
47.00
-0.78
-0.69
QQ
' -
QT
48.0
46.0
47.0
1.00
0.236
47.00
-0.78
-0.69
QU
50.0
52.0
54.0
2.00
0.473
52.00
0.95
1.04
QW
53.0
52.0
51.0
1.00
0.236
52.00
0.95
1.04
ox
52.0
50.0
50.0
1.15
0.236
50.67
0.49
0.58
QZ
46.0
45.0
45.0
0.58
0.118
45.33
; 1.36
-1.27
HD
^ •»
RF
47.0
46.0
45.0
1.00
0.236
46.00
-1.13
-1.04
RG
S1B11I®
• -
• =
No data submitted
TAG SYMBOLS
ff 5 Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
= Below control limit
4/
-------
(r
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
—^
28/44
Cobalt-60
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tasr
UK
36.0
35.0
36.0
0.58
0.118
, 35.67
, -4.71
-4.62
x -
RP
•
RE
j.
RU
48.0
49.0
48.0
0.58
0118
48.33
-0.32
-0.23
RV
• '
RZ
49.0
50.0
49.0
0.58
0.118
49.33
0.02
0.12
S
48.0
49.0
48.0
0.58
0.118
48.33
-0.32
-0.23
sc
44.0
46.0
45.0
1.00
0.236
45.00
-1.48
-1.39
SD
43.0
43.0
44.0
0.58
0.118
43.33
-2.05
-1.96
SF
52.0
50.0
49.0
1.53
0.354
50.33
0.37
0.46
SI
52.0
50.0
50.0
1.15
0.236
50.67
0.49
0.58
SL
¦'VA'
• P.
v"' V, :;j
isN.
SM
48.0
48.0
48.0
0.00
0.000
48.00
-0.44
-0.35
SN
45.0
48.0
47.0
1.53
0.354
46.67
-0.90
-0.81
SO
"''¦"a'''®
•
SR
50.0
47.0
49.0
1.53
0.354
48.67
-0.21
-0.12
ss
54.0
55.0
54.0
0.58
0.118
54.33
__1.76__
1.85
ST
....... ....... ........
llBSIBi
',vV a
¦""> a\.'7;?V
sx
48.0
49.0
52.0
2.08
0.473
49.67
0.14
0.23
sz
49.0
47.0
48.0
1.00
0.236
48.00
-0.44
-0.35
T
45.0
49.0
47.0
2.00
0.473
47.00
-0.78
-0.69
TD
64.0
63;0
61.0
1.631
0.354
62.67
4.64
4.73
" 3£ W.
X
TG
1 sSV i' ,
'
*
TH
117.0
114.0
115.0
• 153
0.35-4
116.33
>fe22:89::.;'-\
22.98
TI
50.0
50.0
50.0
0.00
0.000
5000
0.26
0.35
TJ
¦X:
v>vv"% -v s> , ^ v V
*
'<< < • ySy
TL
410
400
46.0
3.21
0.709
42.33
-2.40
- ;?.-31 „
TN
TQ
45.0
48.0
43.0
2.52
0.591
45.33
-L36
-1.27
TS
50.0
52.0
52.0
1.15
0.236
51.33
0.72
0.81
TY
: >:¦:< x:: y.: :>¦ : "*v
' {
U
50.0
50.0
510
0.58
0118
50.33
0.37
0.46
UA
. . . *
*
UE
"¦ > / A1 s 4
*>/¦
UK
63.0
95.0
94.0
18.19
6.296 \
84.00
12.03
12.12
X :
UN
53.0
50.0
50.0
1.73
0.354
51.00
0.60
0.69
UP
46.0
54.0
50.0
4.00
0.945
50.00
0.26
035
UQ
|C:gI|g|yv:;
SMPK
•
uw
53.0
54.0
52.0
1.00
0.236
53.00
1.30
1.39
UY
46.0
52.0
55.0
4.58
1.120
51.00
0.60
0.69
VA
* ^ V -
VC
iMSWIll
•
VG
' ' ' s /
' - 'X'
VH
47.0
48.0
48.0
0.58
0.118
47.67
-0.55
-0.46
VI
50.0
51.0
50.0
0.58
0.118
50.33
0.37
0!46
• =
No data submitted
TAG SYMBOLS
It = Above control limit
u=
Insufficient data
x =
Determined to be an outlier
!!• = Below control limit
: yj
-------
29/44
/ - —
CRD-LV Performance Evaluation: Blind-B,
17-Oct-l995
Cobalt-60
1
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tas
VJ
..
VM
51.0
50.0
50.0 0.58
0.118
50.33
0.37
0.46
VO
53.0
48.0
51.0 2.52
0.591
50.67
0.49
0.58
VT
W
48.0
48.0
44.0 2.31
0.473
46.67
0.90
-0.81
WE
iiipi
*is ' - *'
WF
49.0
50.0
49.0 0.58
0.118
49.33
0.02
0.12
WO
' X
68.0
62:0
- 61.0 2.08
0.473
60.33
3 84
3.93 x
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.00
X
QJ
47.67
AZ
49.67
BL
21.67
X
MV
48.00
SZ
49.67
AJ
35.67
X
RK
48.00
SM
50.00
UP
35.67
X
P
48.00
Q
50.00
TI
38.00
X
HI
48.00
PV
50.00
KX
40.67
NK
48.00
GQ
50.00
J
42.00
DZ
48.00
DT
50.00
HK
42.33
TL
48.00
BN
50.00
FU
43.33
SD
48.00
AW
50.00
CP
43.67
A
48.00
AK
50.00
BB
44.33
HP
48.00
AE
50.33
VM
44.67
AH
48.33
S
50.33
VI
45.00
SC
48.33
RU
50.33
U
45.00
K
48.33
PW
50.33
SF
45.33
TQ
48.33
PB
50.33
MP
45.33
QZ
48.33
DM
50.33
FL
! 46.00
RF
48.67
SR
50.33
CQ
46.67
W
48.67
MQ
50.33
CA
46.67
SN
48.67
CX
50.33
C
46.67
NJ
48.67
AL
50.33
BM
46.67
LR
49.00
MA
50.33
AU
46.67
JE
49.00
M
50.67
VO
46.67
BC
49.00
HL
50.67
SI
47.00
T
49.00
DL
50.67
QX
47.00
QT
49.00
AP
50.67
PQ
47.00
QP
49.33
WF
50.67
JS
47.00
GI
49.33
RZ
50.67
IC
47.00
DE
49.33
LF
51.00
UY
47.00
DD
49.33
JG
51.00
UN
47.33
EL
49.67
SX
51.00
DG
47.33
E
49.67
LT
51.33
TS
47.33
AF
49.67
I
51.33
PI
47.67
VH
49.67
BO
51.33
O
• s No data submitted
TAG SYMBOLS
IT
a Above control limit
0 a Insufficient data
x 3 Determined to be an outlier
U
3 Below control limit
'J
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
30/44
Cobalt-60
Data sorted by laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
51.33
EB
52.67
FZ
55.00
CM
51.67
JY
53.00
UW
57.00
EX
51.67
CK
53.00
NO
59.00
X
cs
51.67
BA
53.00
DO
59.67
X
MY
52.00
QW
53.33
GE
60.33
X
X
52.00
QU
53.67
PM
62.67
X
TD
52.00
FJ
53.67
CJ
72.33
X
BG
52.00
CO
54.33
ss
84.00
X
UK
52.00
BK
54.33
L
84.00
X
HX
52.33
BH
54.33
CE
115.33
X
TH
% responding labs
Frequency distribution
10-
-T-
44
-6
> responding labs
-4 -2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
"T"
+6
10-
0-liS
— —B— ^
liL|ll.iii .1
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS It s Above control limit
0g Insufficient data x s Determined to be an outlier II a Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
\
31/44
Cesium-134 Statistical Summary 189 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 5.0; the control limits
are 31.3 to 48.7; the.warning regions are 31.3 to 34.2 and 45.8 to 48.7
60(31.7 %) Failed to respond •
97(51.3 %) Within all limits
8(4.2 %) Outliers -* : *
3(1.6 %) Out of control ¦'*
21 (11.1 %) In warning zone
but not an outlier
I
I I
but within control
Statistic
Respondents
Non-outliers
Mean
36.57
Grand Avg 36.71
Std. Dev.
7.10
3.06
Variance
50.45
9.38
% Coef. of Var.
19.42
8.34
% deviation of mean from known value
-8.59
-8.22
Norm. dev. of mean from known value
-0.48
-1.07
Median
36.67
36.67
% deviation of median from known value
-8.33
-8.33
Norm. dev. of median from known value
-0.47
-1.09
11 (8.5 %) More than 3 norm. S.D. »
21(16.3 %) Between 2 and 3 norm. S.D.
45(34.9 %) Within 1 norm. S.D.
of known value
* 52(40.3 %) Between 1 and 2 norm. S.D.
-------
(( "
32/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
^
Cesium-134
—
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
31.0
33.0
32.0
1.00
0.236
32.00
-1.63
-2.77
AE
36.0
36.0
38.0
1.15
0.236
36.67
-0.02
-1.15
AF
32.0
35.0
34.0
1.53
0.354
33.67
-1.05
-2.19
AH
36.0
34.0
35.0
100
0.236
35.00
_ -0.59
-1.73
AI
AJ
35.0
34.0
34.0
0.58
0.118
34.33
-0.82
-1.96
AK
36.0
36.0
36.0
0.00
0.000
36.00
-0.25
-1.39
AL
43.0
41.0
40.0
1.53
0.354
41.33
1.60
0.46
AP
37.0
37.0
40.0
1.73
0.354
38.00
0.45
-0.69
AR
S -
AU
36.0
39.0
35.0
2.08
0.473
36.67
-0.02
-1.15
AW
34.0
33.0
35.0
1.00
0.236
34.00
-0.94
-2.08
AZ
51.0
40.0
50.0
6.08
1.570
47.00
3.56
2.42
BA
39.0
39.0
40.0
0.58
0.118
39.33
0.91
-0.23
BB
38.0
39.0
39.0
0.58
0.118
38.67
0.68
-0.46
BC
34.0
35.0
36.0
1.00
0.236
35.00
-0.59
-1.73
BG
30.0
30.0
35.0
2.89
0.591
31.67
-1.75
-2.89
BH
35.0
33.0
36.0
1.53
0.354
34.67
-0.71
-1.85
BK
44.0
44.0
44.0
0.00
0.000
44.00
2.53
1.39
BL
38.0
37.0
38.0
0.58
0.118
37.67
0.33
-0.81
BM
38.0
35.0
35.0
1.73
0.354
36.00
-0.25
-1.39
BN
35.0
36.0
36.0
0.58
0.118
35.67
-0.36
-1.50
BO
33.0
36.0
37.0
2.08
0.473
35.33
-0.48
-1.62
BS
¦ • > ^
BW
§1;:
C
38.0
37.0
38.0
0.58
0.118
37.67
0.33
-0.81
CA
37.0
35.0
37.0
1.15
0.236
36.33
-0.13
-1.27
CE
37.0
38.0
39.0
1.00
0.236
38.00
0.45
-0.69
CG
,V •
CJ
33.0
32.0
38.0
3.21
0.709
34.33
¦ -0.82
-1.96
CK
35.0
35.0
32.0
1.73
0.354
34.00
-0.94
-2.08
CM
36.0
39.0
41.0
2.52
0.591
38.67
0.68
-0.46
CO
40.0
38.0
34.0
3.06
0.709
37.33
0.22
-0.92
CP
41.0
37.0
35.0
3.06
0.709
37.67
0.33
-0.81
CQ
34.0
35.0
36.0
1.00
0.236
35.00
-0.59
-1.73
cs
45.0
46.0
46.0
0.58
0.118
45.67
3.10
1.96
cx
39.0
38.°
39.0
0.58
°:118
38.67
0.68
-0.46
D
lH®!!!!!!
DB
-V f '
DD
37.0
36.0
38.0
1.00
0.236
37.00
0.10
-1.04
DE
35.0
35.0
35.0
0.00
0.000
35.00
-0.59
-1.73
DG
36.0
35.0
33.0
1.53
0.354
34.67
... -P-71 ...
_-1.85 _
DI
DL
41.0
37.0
37.0
2.31
0.473
38.33
0.56
-0.58
DM
37.0
38.0
35.0
1.53
0.354
36.67
-0.02
-1.15
• =
No data submitted
TAG SYMBOLS
f[ = Above control limit
l 0 3
Insufficient data
x =
Determined to be an outlier
s Below control limit
-y
-------
>
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 33/44
C~
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
300
35.0
35.0
2.89
0.591
33.33
-1.17
-2.31
DS
DT
39.0
35.0
36.0
2.08
0.473
36.67
-0.02
-1.15
DZ
43.0
32.0
30.0
7.00
2.020
35.00
-0.59
-1.73
E
38.0
37.0
34.0
2.08
0.473
36.33
-0.13
-1.27
EB
37.0
37.0
37.0
0.00
0.000
37.00
0.10
-1.04
EL
36.0
39.0
37.0
153
0.354
37.33
0.22
-0.92
EO
C- 1 • A?Y
, "¦ "" vTY""5
# ' ^
ER
- ... ¦ '¦
vr:
v
•
EV
*
EX
37.0
42.0
41.0
2.65
0.591
40.00
0.00
FF
•; • y'i %
.
":'v ""
\ ¦" ^
* •'<;
FJ
39.0
39.0
37.0
1.15
0.236
38.33
0.56
-0.58
FL
370
41.0
39.0
2.00
0.473
39:00
0.79
-0.35
FN
?}'
FU
38.0
39.0
37.0
1.00
0.236
38.00
0.45
-0.69
FZ
37.0
41.0
43.0
3.06
0.709
40.33
1.25
0.12
GE
34.0
35.0
36.0
1.00
0.236
35.00
-0.59
-1.73
GI
32.0
36.0
34.0
2.00
0.473
34.00
-0.94
-2.08
GQ
38.0
37.0
39.0
1.00
0.236
38.00
0.45
-0.69
GT
• v
gz:
V/ > - *
- f "«
« v
HI
22.0
23.0
24.0
1.00
0.236
23.00.
'v-4;76 '
-5.89
X
HK
36.0
37.0
37.0
0.58
0.118
36.67
-0.02
-1.15
HL
40.0
40.0
40.0
0.00
0.000
40.00
1.14
0.00
HP
38.0
37.0
38.0
0.58
0.118
37.67
0.33
-0.81
HX
65.0
62.0
64.0
1.53
0.354
63.67
" *'• 9.34- • "
8.20
X,
I
42.0
39.0
36.0
3.00
0.709
39.00
0.79
-0.35
IC
410
^ 41.0
47.0
3.46
0.709
43.00
2.18 ^
1.04
ED
J'.,:"--'-'
i: *¦ 'VTt js •
•
J
38.0
38.0
37.0
0.58
0.118
37.67
0 33
-0.81
JE
33.0
34.0
35.0
1.00
0.236
34.00
-0.94
-2.08
JG
33.0
33.0
29.0
2.31
0.473
3167
-1.75
-2.89
JN
•
JQ
, ' 7^ ^
• fl
JS
38.0
39.0
38.0
0.58
0118
38.33
0.56
-0.58
JX
Y'. vv -• ;
. ' C'V -V' '• "
JY
37.0
37.0
36.0
0.58
0.118
36.67
-0.02
-1.15
K
43.0
40.0
42.0
1.53
0.354
41.67
1.72
0.58
KE
- ::
. —
•
KT
*
•
KX
37.0
37.0
39.0
1.15
0.236
37.67
0.33
-0.81
L
40.0
40.0
42.0
1.15
0.236
40.67
1.37
0.23
LF
33.0
34.0
330
0.58
0.118
33.33
-1.17
-2.31
LL
' • • CL
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 =
Insufficient data
X =5
Determined to be an outlier
ii = Below control limit
. ^ — **4Quiiiv*vuv uava ^ - w^iuiuicu w ug cut v = wwun vvuuvi uuuo
v? /)
-------
ft
34/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
^
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
LR
37.0
31.0
40.0
4.58
1.120
36.00
-0.25
-1.39
LT
36.0
37.0
38.0
1.00
0.236
37.00
0.10
-1.04
M
38.0
39.0
37.0
1.00
0.236
38.00
0.45
-0.69
MA
32.0
36.0
36.0
2.31
0.473
34.67
-0.71
-1.85
MF
• --
MP
35.0
35.0
36.0
0.58
0.118
35.33
-0.48
-1.62
MQ
44.0
37.0
34.0
5.13
1.345
38.33
0.56
-0.58
MV
11.0
10.0
14.0
2.08
0.473
11.07
-8.68
-9.81
X
MY
30.0
31.0
30.0
0.58
0.118
30.33
-2.21
-3.35
N
llilSill!
illlilllllp
• *
NA
llllMlf
lliiil
NH
MilllW
V.
mmm
Itfllltilllllitl
•v
NJ
33.0
33.0
33.0
0.00
0.000
33.00
-1.29
-2.42
NK
31.0
30.0
31.0
0.58
0.118
30.67
-2.09
-3.23
a
NO
360
37.0
38.0
1.00
0.236
37.00
0.10
-104
NT
O
36.0
360
36.0
0.0°
0.000
36v9°
-0.25
-1.39
OF
Bll|Slpl
<. ^'
OS
':x'%
> • £:
OX
WIMM
-
OY
9 *
OZ
' • '
P
20,0
25.0
20.0
2.89
0.591
21.67
-5.21
-6.35 . ,
X
PA
„
• 'V
PB
22.0
22.0
21.0
0-68
0.118
21'67
-5.21
-6.35
*x/
PG
PI
38.0
38.0
39.0
0.58
0.118
38.33
0.56
-0.58
PM
36.0
36.0
39.0
1.73
0.354
37.00
0.10
-1.04
PQ
34.0
35.0
34.0
0.58
0.118
3433
-0.82
-1.96
PR
BMBl
IISppllll
•
PV
37.0
36.0
30.0
3.79
0.827
34.33
-0.82
-1.96
PW
35.0
37.0
37.0
1.15
0.236
36.33
-0.13
-1.27
Q
38.0
36.0
36.0
1.15
0.236
36.67
-0.02
-1.15
QC
,%vs /
QJ
1.0
1.0
1.0
0.00
0.000
1.00
-12.37
-13.51
X
QP
46.0
39.0
41.0
3.61
0.827
42.00
1.83
0.69
QQ
;« ~~ •
QT
35.0
36.0
35.0
0.58
0.118
35.33
-0.48
-1.62
QU
35.0
34.0
36.0
LOO
0.236
35.00
-0.59
-1.73
QW
31.0
35.0
33.0
2.00
0.473
33.00
-1.29
-2.42
QX
34.0
36.0
38.0
2.00
0.473
36.00
-0.25
-1.39
QZ
33.0
31.0
31.0
1.15
0.236
31.67
-1.75
-2.89
RD
•
RF
40.0
39.0
38.0
1.00
0.236
39.00
0.79
-0.35
RG
V' $£ivi
«
' • s
No data submitted
TAG SYMBOLS
ft s Above control limit
0 2
Insufficient data
X s
Determined to be an outlier
3 Below control limit
— //
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 35/44 i
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
RK
28.0
280
270
0.58
0.118
27.67
-3.13
-4.27
RP
'SSS'v;
•
RR
•
RU
35.0
34.0
35.0
0.58
0.118
34.67
-0.71
-1.85
RV
y.'./ • •
9
RZ
38.0
39.0
39.0
0.58
0.118
38.67
0.68
-0.46
S
37.0
38.0
39.0
1.00
0.236
38.00
0.45
-0.69
sc
33.0
34.0
35.0
1.00
0.236
34.00
-0.94
-2.08
SD
34.0
35.0
34.0
0.58
0.118
34.33
-0.82
-1.96
SF
39.0
37.0
37.0
1.15
0.236
37.67
0.33
-0.81
SI
37.0
38.0
40.0
1.53
0.354
38.33
0.56
-0.58
; SL
; ¦' '.v
<' ; ^ /
' ' ""/ ."v ^ *'"v
•
SM
36.0
39.0
36.0
1.73
0.354
37.00
0.10
-1.04
SN
36.0
37.0
37.0
0.58
0.118
36.67
-0.02
-1.15
SO
' " .
. ...v.;
SR
38.0
37.0
33.0
2.65
0.591
36.00
-0.25
-1.39
SS
42.0
41.0
40.0
100
0.236
41.00
1.49
0.35
ST
" ¦'/ J S "/s
sx
33.0
34.0
35.0
1.00
0.236
34.00
-0.94
-2.08
sz
35.0
35.0
35.0
0.00
0.000
35.00
-0.59
-1.73
T
38.0
39.0
35.0
2.08
0.473
37.33
0.22
-0.92
TD
46.0
44.0
45.0
1.00
0.236
45.00
... v2.87_
1.73
TG
• *
TH
80.0
79.0
78.0
1.00
0.236
79.00
^ . 14.65 :'
13.51 ,
x *
IT
38.0
36.0
37.0
1.00
0.236
37.00
0.10
-1.04
TJ
TL
33.0
28.0
37.0
4.51
1.120
32.67_
-1.40
- :?-54 _
TN
V ^
< " ^
¦ik ">?*:<
TQ
33.0
36.0
33.0
1.73
0.354
34.00
-0.94
-2.08
TS
40.0
40.0
41.0
0.58
0.118
40.33
1.25
0.12
1Y
iiiigai#
''
•
U
40.0
39.0
38.0
1.00
0.236
39.00
0.79
-0.35
UA
: ' J •". y) K $
pSSSlppf
. '
UE
V* \
c 7 4
#
UK
62.0
52.0
46.0
8.08
2.695
53.33 \
5.76 -
4.62
X
UN
37.0
37.0
36.0
0.58
0.118
36.67
-0.02
-1.15
UP
320
40.0
36.0
4.00
0.945
36.00
-0.25
-1.39
UQ
Igplfgf
.. .
uw
41.0
39.0
41.0
1.15
0.236
40.33
1.25
0.12
UY
36.0
39.0
40.0
2.08
0.473
38.33
0.56
-0.58
VA
¦
•
VC
k *¦ V ^jfA
* -
va
,
r ,
w
r ~- u
VH
32.0
34.0
36.0
2.00
0.473
34.00
-0.94
-2.08
VI
310
34.0
31.0
1.73
0.354
32.00
-1.63
•2.11
• s
No data submitted
TAG SYMBOLS
IT = Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
11 s Below control limit
V
-------
36/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium-134
Exper. Rng anal Normalized deviation
Lab Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
VM 39.0 38.0 40.0 1.00
VO 38.0 39.0 35.0 2.08
vt . .
W 35.0 36.0 35 0 0.58
WE. *;
WF 34.0 34.0 34.0 0.00
wo . . - . '
X 46.0 40.0 38.0 4.16
0.236
0.473
0.118
0.000
0.945
39.00
37.33
35.33
34.00
IT.''*-, *
41.33
0.79
0.22
-0.48
-0.94
1.60
-0.35
-092
-1.62
-2.08
0.46
Data sorted by Laboratory Average
Average
Tasr
Lab
Average
Tag
Lab
Average
Tag
Lab
1.00
X
QJ
34.67
RU
36.67
DM
11.67
X
MV
34.67
MA
36.67
AU
21.67
X
PB
34.67
DG
36.67
AE
21.67
X
P
34.67
BH
37.00
TI
23.00
X
HI
35.00
SZ
37.00
SM
27.67
Jl
RK
35.00
37.00
PM
30.33
li
MY
35.00
GE
37.00
NO
30.67
u
NK
35.00
DZ
37.00
LT
31.67
QZ
35.00
DE
37.00
EB
31.67
JG
35.00
CQ
37.00
DD
31.67
BG
35.00
BC
37.33
VO
32.00
VI
35.00
AH
37.33
T
32.00
A
35.33
W
37.33
EL
32.67
TL
35.33
QT
37.33
CO
33.00
QW
35.33
MP
37.67
SF
33.00
NJ
35.33
BO
37.67
KX
33.33
LP
35.67
BN
37.67
J
33.33
DO
36.00
UP
37.67
HP
33.67
AF
36.00
SR
37.67
CP
34.00
WF
36.00
QX
37.67
C
34.00
VH
36.00
O
37.67
BL
34.00
TQ
36.00
LR
38.00
S
34.00
SX
36.00
BM
38.00
M
34.00
sc
36.00
AK
38.00
GQ
34.00
JE
36.33
PW
38.00
FU
34.00
GI
36.33
E
38.00
CE
34.00
CK
36.33
CA
38.00
AP
34.00
AW
36.67
UN
38.33
UY
34.33
SD
36.67
SN
38.33
SI
34.33
PV
36.67
Q
38.33
PI
34.33
PQ
36.67
JY
38.33
MQ
34.33
CJ
36.67
HK
38.33
JS
34.33
AJ
36.67
DT
38.33
FJ
• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It
= Above control limit
= Below control limit
-------
Cesium-134
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
^
37/44
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
38.33
DL
39.33
BA
41.67
K
38.67
RZ
40.00
HL
42.00
QP
38.67
CX
40.00
EX
43.00
IC
38.67
CM
40.33
UW
44.00
BK
38.67
BB
40.33
TS
45.00
TD
39.00
VM
40.33
FZ
45.67
CS
39.00
U
40.67
L
47.00
AZ
39.00
RF
41.00
ss
53.33
X
UK
39.00
I
41.33
X
63.67
X
HX
39.00
FL
41.33
AL
79.00
X
TH
% responding labs Frequency distribution
10-
m-
¦4 -2 u +2 ^4
Normalized deviation of the mean from the known value
responding labs Frequency distribution
10-
¦fllilflllii-
0 iSa, , ¦ , ¦^Hwiyill|llll^lB>B , ¦ ¦¦ ! ¦ ¦
•6 -4 -2 0+2+4
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS It s Above control limit
0 = Insufficient data x = Determined to be an outlier II a Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
38/44
Cesium-137 Statistical Summary 189 Participants
The known value of this nuclide is 30.0 pCi/1 with an expected precision of 5.0; the control limits
are 21.3 to 38.7; the warning regions are 21.3 to 24.2 and 35.8 to 38.7
60(31.7 %) Failed to respond
10(5.3 %) Outliers -*
1 (0.5 %) Out of control •'
but not an outlier
Statistic
.111 (58.7 %) Within all limits
Respondents
7(3.7 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
31.12
6.28
39.47
20.19
3.75
0.18
30.67
2.22
0.11
Grand Avg 30.84
2.52
6.35
8.17
2.81
0.33
30.67
2.22
0.26
11 (8.5 %) More than 3 norm. S.D.
7(5.4 %) Between 2 and 3 norm. S.D.
$
. 99(76.7 %) Within 1 norm. S.D.
of known value
id#
'~12(9.3 %)
Between 1 and 2 norm. S.D.
-------
v —
39/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
28.0
28.0
27.0
0.58
0.118
27.67
-1.10
-0.81
AE
31.0
30.0
30.0
0.58
0.118
30.33
•0.18
0.12
AF
32.0
26.0
27.0
3.21
0.709
28.33
-0.87
-0.58
AH
32.0
29.0
300
1.53
0.354
30.33
-0.18
0.12
AI
• •
AJ
30.0
30.0
30.0
0.00
0.000
30.00
-0.29
0.00
AK
30.0
30.0
30.0
0.00
0.000
30.00
-0.29
0.00
AL
28.0
34.0
32.0
3.06
0.709
31.33
0.17
0.46
AP
32.0
30.0
29.0
153
0.354
30.33
-0.18
0.12
AR
- # ' .
lilWSl
•'
AU
33.0
31.0
29.0
2.00
0.473
31.00
0.05
0.35
AW
31.0
27.0
32.0
2.65
0.591
30.00
-0.29
0.00
AZ
34.0
32.0
31.0
1.53
0.354
32.33
0.52
0.81
BA
25.0
28.0
29.0
2.08
0.473
27.33
-1.22
-0.92
BB
32.0
29.0
31.0
1.53
0.354
30.67
-0.06
0.23
BC
31.0
30.0
29.0
1.00
0.236
30.00
-0.29
0.00
BO
: ' 16,0
21.0
14.0
3.61
0.827
17.00
-4.80
-4.50 X.:.,
BH
34.0
32.0
32.0
1.15
0.236
32.67
0.63
0.92
BK
38.0
38.0
38.0
0.00
0.000
38.00
2.48
2.77
BL
31.0
30.0
30.0
0.58
0.118
30.33
-0.18
0.12
BM
32.0
29.0
28.0
2.08
0.473
29.67
-0.41
-0.12
BN
28.0
31.0
32.0
2.08
0.473
30.33
-0.18
0.12
BO
29.0
31.0
29.0
115
0.236
29.67
-0.41
-0.12
BS
W"- - <,
'
BW
C
31.0
32.0
31.0
0.58
0.118
31.33
0.17
0.46
CA
31.0
30.0
33.0
1.53
0.354
31.33
0.17
0.46
CE
32.0
30.0
34.0
2.00
0.473
3200
0.40
0.69
CG
llllSBIII
flllBlSlllSfl
*v %s ' / - s *
- : -• -
CJ
35.0
35.0
35.0
0.00
0.000
35.00
1.44
1.73
CK
33.0
33.0
27.0
3.46
0.709
31.00
0.05
0.35
; CM
30.0
30.0
32.0
1.15
0.236
30.67
-0.06
0.23
CO
28.0
31.0
34.0
3.00
0.709
31.00
0.05
0.35
CP
31.0
29.0
30.0
1.00
0.236
30.00
-0.29
0.00
CQ
32.0
32.0
34.0
1.15
0.236
32.67
0.63
0.92
cs
39.0
38.0
40.0
1.00
0.236
39.00
2.83
3.12 It
cx
29.0
33.0
33.0
2.31
0.473
31.67
0.29
0.58
D
f ifllff~fm '!"¦
.
DB
fiistss
s > J s - A
DD
31.0
30.0
32.0
1.00
0.236
31.00
0.05
0.35
DE
29.0
30.0
30.0
0.58
0.118
29.67
-0.41
-0.12
DG
35.0
35.0
33.0
1.15
0.236
34.33
1.21
1.50
DI
DL
27.0
31.0
28.0
2.08
0.473
28.67
-0.75
-0.46
DM
31.0
31.0
29.0
1.15
0.236
30.33
-0.18
0.12
• =
No data submitted
TAG SYMBOLS
It s Above control limit
[0-
Insufficient data
X H
Determined to be an outlier
11 = Below control limit
yj
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 40/44
Cesium-137
'
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tair
DO
34.0
/ 32.0
29.0
2.52
0.591
31.67
0.29
0.58
DS
DT
36.0
32.0
34.0
2.00
0.473
34.00
1.09
1.39
DZ
35.0
32.0
31.0
2.08
0.473
32.67
0.63
0.92
E
31.0
32.0
27.0
2.65
0.591
30.00
-0.29
0.00
EB
33.0
32.0
32.0
0.58
0.118
32.33
0.52
0.81
EL
31.0
310
28.0
1.73
0.354
30.00
-0.29
0.00
EO
ER
:X XyXXXX,.' "X*
\^X
>-
•
EV
y, % 11 *
EX
29.0
35.0
30.0
3.21.
0.709
31.33
0.17
0.46 :
FF
¦:
- >s-. ~
-•J
FJ
30.0
33.0
31.0
1.53
0.354
31.33
0.17
0.46
FL
32.0
32.0
34.0
1.15
0.236
32.67
0.63
092
FN
1 r itxp
FU
28.0
32.0
30.0
2.00
0.473
30.00
-0.29
0.00
FZ
30.0
33.0
33.0
1.73
0.354
32.00
0.40
0.69
GE
30.0
33.0
42.0
6.24
1.795
35.00
1.44
1.73
GI
27.0
30.0
30.0
1.73
0.354
29.00
-0.64
-0.35
GQ
30.0
31.0
29.0
1.00
0.236
30.00
v -0.29
0.00
GT
'r
GZ
.xvJ.• ...'?:&•
¦' * _ •'•A
" ^ i
HI
22.0
23.0
21.0
1.00
0.236
22.00
-3.06
-2.77
HK
33.0
32.0
32.0
0.58
0.118
32.33
0.52
0.81
HL
33.0
33.0
33.0
0.00
0.000
33.00
0.75
1.04
HP
31.0
32.0
32.0
0.58
0.118
31.67
0.29
0.58
HX
62.0
61.0
53.0
1.00
0.236
52.00
7.33
7.62
Ficr{
I
29.0
33.0
31.0
2.00
0.473
31.00
0.05
0.35
IC
320
31.0
31.0
0.58
0118
31-33
0.17
0.46
ID
. -X~.„ -
< v ''
v % -.S . ' •>
Xftf&w/ny 'sn
<"•' VS-.V*"
X" '
-v—¦
• '
J
30.0
30.0
30.0
0.00
0.000
30.00
-0.29
0.00
JE
28.0
30.0
29.0
1.00
0.236
29.00
-0.64
-0.35
JG
38.0
340
390
2.65
0.591
37.00
2.13
2.42
JN
WMXXXX
V/w
s\ ,* ;*
* ' >A?*Vv - ?
JQ
-; xi
JS
29.0
30.0
31.0
1.00
0.236
30.00
-0.29
0.00
JX
"> ' w
*SM
JY
32.0
31.0
31.0
0.58
0.118
31.33
0.17
0.46
K
34.0
33.0
320
1.00
0.236
33.00
0.75
1.04
KE
£%:¦ J i
" A y •«>
KT
. ... V .•:%
" *5 2V * v *
• <
*
KX
28.0
31.0
28.0
1.73
0.354
29.00
-0.64
-0.35
L
34.0
34.0
35.0
0.58
0.118
34.33
1.21
1.50
LF
28.0
28.0
31.0
1.73
0.354
29.00
-0.64
-0.35
LL
v > A
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 s Insufficient data x = Determined to be an outlier 11 3 Below control limit
-------
r(
41/44
V-
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LR
27.0
31.0
33.0
3.06
0.709
30.33
¦0.18 0.12
LT
30.0
29.0
33.0
2.08
0.473
30.67
¦0.06 0.23
M
28.0
30.0
30.0
1.15
0.236
29.33
¦0.52 -0.23
MA
30.0
26.0
310
2.65
0.591
29.00
-0.64 -0.35
MF
ST"v'
* " "•
MP
30.0
30.0
31.0
0.58
0.118
30.33
-0.18 0.12
MQ
34.0
31.0
30.0
2.08
0.473
31.67
0.29 0.58
MV
10.0
9.0
14.0
2.65
0.591
.,ii.oo
- "6^87 -6.58 x -
MY
41.0
40.0
41.0
0.58
0.118 ;
40.67
. 3.40/ 3.70 x .
N
ir. :V'y;'S-
, , s rS , v st. .. A <* <
- _ ,_y . ; •
NA
\ * >t>ri '
fst-''
NH
¦ v-:>-
NJ
29.0
28.0
28.0
0.58
0.118
28.33
-0.87 -0.58
NK
24.0
22.0
25.0
1.53
0.354
23.67
-2.49 -2.19
NO
33.0
34.0
35.0
1.00
0.236
34.00
1.09 1.39
NT
•
O
31.0
31.0
310
0.00
0.000
31.00
0.05 0.35
OF
OS
ox
Kllltlp!
¦ -, ; ••
lllHilil!
OY
.•.y
• >1 ¦>" X<
oz
5-%Pli?S i:$¥%
^ w * A? V'V\' - < -s < J
P
17.0
19.0
20.0
1.53
0.354
18.67
¦ x
PA
PB
28.0
23.0
32.0
2.31
0.473
29.33
-0.52 -0.23
PG
- ' -1" " "•r •
PI
34.0
33.0
33.0
0.58
0.118
33.33
0.86 1.15
PM
27.0
32.0
36.0
4.51
1.120
31.67
0.29 0.58
PQ
31 0
30.0
30.0
0.58
0.118
30.33
-0.18 0.12
PR
iv.> - \
-------
rr
^
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
42/44
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
UK
21.0
22.0
22.0
0.58
0118
21.67
-3.18
-2.89
RP
•
RR
^ \ - S
RU
29.0
30.0
29.0
0.58
0.118
29.33
-0.52
-0.23
RV
• *
RZ
29.0
29.0
30.0
0.58
0.118
29.33
-0.52
-0.23
S
29.0
31.0
31.0
1.15
0.236
30.33
-0.18
0.12
sc
30.0
29.0
29.0
0.58
0.118
29.33
-0.52
-0.23
SD
32.0
29.0
30.0
1.53
0.354
30.33
-0.18
0.12
SF
29.0
30.0
32.0
1.53
0.354
30.33
-0.18
0.12
SI
30.0
31.0
31.0
0.58
0.118
30.67
-0.06
0.23
SL
1
SM
34.0
31.0
32.0
1.53
0.354
32.33
0.52
0.81
SN
300
33.0
32.0
1.53
0.354
31:67
0.29
0.58
SO
-- •" - - . ¦
¦ "» •
SR
32.0
31.0
29.0
1.53
0.354
30.67
-0.06
0.23
ss
34.0
32.0
33.0
1.00
0.236
33.00
0.75
1.04
ST
•
SX
27.0
27.0
28.0
0.58
0.118
27.33
-1.22
-0.92
sz
31.0
30.0
30.0
0.58
0.118
30.33
-0.18
0.12
T
29.0
28.0
28.0
0.58
0.118
28.33
-0.87
-0.58
TD
37.0
35.0
38.0
1.53
0.354
36.67
_ 2.02
2.31
TO
V;
•
TH
71.0
0810
70.0
1.53
0.364
69i67fe
13:46
13.74 x
n
41.0
32.0
36.0
4.51
1.120
36.33
1.90
2.19
TJ
' ^ '
I8SIS8
VG
• " *<:'
'
VH
30.0
28.0
29.0
1.00
0.236
29.00
-0.64
-0.35
VI
30.0
30.0
30.0
0.00
0.000
30.00
-0.29
0.00
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
[0-
Insufficient data
X 2
Determined to be an outlier
Ji s Below control limit
.4/
-------
/¦
43/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium-137
"¦"s
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VJ
VM
31.0
29.0
30.0 1.00
0.236
30.00
0.29
0.00
VO
33.0
32.0
32.0 0.58
0118
32.33
0.52
0.81
VT
• v:- —••• . : • '
•
W
29.0
32.0
31.0 1.53
0.354
30.67
0.06
0.23
WE
- •
WF
53.0
48.0
50.0 2.52
0.591
50;33 V
6,76?
; " 7 04 -
'X,
WO
|:l
X
31.0
31.0
28.0 1.73
0.354
30.00
0.29
0.00
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
T
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 44/44
V '
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
32.33
AZ
33.33
PI
36.67
TD
32.67
UP
33.67
QX
37.00
JG
32.67
QU
34.00
NO
38.00
BK
32.67
FL
34.00
DT
39.00
tr
CS
32.67
DZ
34.33
L
40.67
X
MY
32.67
CQ
34.33
DG
41.33
X
TL
32.67
BH
35.00
UY
43.00
X
UK
33.00
SS
35.00
GE
50.33
X
WF
33.00
K
35.00
CJ
52.00
X
HX
33.00
HL
36.33
TI
69.67
X
TH
%
10
0
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
20
10
0
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS It = Above control limit
0 s Insufficient data x s Determined to be an outlier II a Below control limit
" —
responding labs Frequency distribution
-6 -4 -2 0 +2
La
r-
-6
-4
-2
lf*l-
-¥**¦
+2
+6
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-96/024
February 1996
Gross Alpha-Beta in
Water Performance
Evaluation Study
A Statistical Evaluation of
the October 27, 1995 Data
023RSL96
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
October 27, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
£%
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Gross Alpha-Beta in Water; October 27, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity:
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 1/16
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next hv a new pa^e or a Ihirk
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may vise to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit, up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/16
•>
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
The Range Analysia(R + SR) is calculated from the range, mean range and standard error of
the range vnlues. The range is the difference between the maximum and minimum results for flip
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the -
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected:
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EXPOSURE RESEARCH LABORATORY
P.O. BOX 93478 • LAS VEGAS, NV 89193-3478
OFFICE OF
RESEARCH AND DEVELOPMENT
A note regarding the Gross Alpha portion of the October 27,1995
Gross Alpha-Beta in Water Performance Evaluation Study:
Both the July 1995 and October 1995 Gross Alpha-Beta in Water Performance
Evaluation (PE) Studies showed a significant difference between the grand average and
the known value for the gross alpha. This strongly implies there is bias in the method.
Our research indicates that matrix differences between the salt solids used to prepare the
calibration curve and the salts in the sample are the source of the bias.
The attached figure illustrates the changes in efficiency due to salt composition and
nuclide energy. The bottom curve was prepared with serial dilutions of laboratory tap
water. Laboratory tap water is also used to add variable amounts of dissolved solids to the
PE gross alpha/beta study samples. The second curve was prepared with serial dilutions
of sodium sulfate solution. The top curve was prepared the same way as the second curve
except that Am-241 was used as the alpha emitter. All the usual precautions apply. The
curves reflect the efficiencies for our counter; the curves in the figure are illustrative only;
and lastly, results for your laboratory may be different than shown in the figure.
At zero mass all the curves converge to the extent that the bias would not be noticeable in
a PE study. As the mass of solids increases, the difference between the two Th-230
curves becomes pronounced. For sample masses between 30 and 40 mg, typical range for
a 200 mL sample of the July 1995 or October 1995 study, the difference is between 50 to
70 percent.
To address the bias, we are recommending the procedure used in our laboratory. To a
volume of sample equal to that used for analysis (100-150 mL) add 120 pCi of Th-230.
Acidify the sample with 20-40 mL of concentrated nitric acid and evaporate by the
procedure attached to the PE study report sheet. The volume of PE sample provided is
sufficient to prepare triplicate 150 mL samples and duplicate spiked samples. Count the
spikes until approximately 1600 counts above background are acquired to a maximum of
200 minutes. Background in this case will be that of the PE samples. Subtract the average
count rate of the triplicate samples from the average count rate of the spikes and calculate
the efficiency. Use this efficiency to calculate the concentration of gross alpha in the PE
sample.
Recycled/Recyclable • Pnnted wild Vegetable Oil Based Into on 100% Recycled Paper (40% Postconsumer)
-------
An alternate procedure. After counting the triplicates, redissolve/reslurry the solids of two
of the samples in the planchet with dilute nitric acid (3-6M). Add the spike, mix well,
redry and count the spikes. This technique, though simple on the surface, requires
sufficient care so as not to lose sample volume, and that the Th-230 is thoroughly
incorporated into the dissolved salts. We recommend this only for laboratories with a
high degree of confidence in the analyst's ability to prepare the spikes by this technique.
You may use more or less spiked activity if you choose. The recommended activity of the
spike and the maximum count time were determined to provide 5 percent precision at 95
percent confidence for the spike at an efficiency as low as 3 percent. For higher
efficiencies the count time will be much shorter than 200 minutes. Additionally, we
recommend several practice runs to gain experience with the technique you choose.
So, why not send but our laboratory tap water and have the participating laboratories
prepare a curve? The tap water supplied to our laboratory varies in dissolved salt
composition. This was observed during our verification of the July 1995 PE sample. Our
QC samples showed a 40 percent bias when samples and spikes were quantified using a
calibration curve. Repeat measurements demonstrated the bias was consistent and not due
to analyst error. Therefore, preparing a curve with water from our laboratory does not
guarantee that the bias will be eliminated.
Collectively these procedures are single point calibration techniques and are not
prohibited by the approved methods. The curve concept was introduced in recognition of
the variable dissolved solids of water in given geographical areas.
If you have any questions or comments please call Stephen Pia at 702 798-2102.
-------
ALPHA ATTENUATION CURVES
FOR
RADQA TENNELEC GP COUNTER
0.2500
.0.2250
0.2000
0.1750
2
0.1500
Q.
Q
0.1250
Q.
o
0.1000
0.0750
0.0500
0.0250
0.0000
Am-241 sulfate system;
Th-?30 sulfate system \
|THf23Ci nitijate system
0 10 20 30 40 50 60 70 80 90 100110120
Mg RESIDUAL SOLIDS
EQUATION: Y = A„ + A,X + A2X2 + A3X3
Th-230 sulfate
A0 = 0.2199
A1 = -2.914E-3
A2 = 1.8422E 5
A3 = -4.4449E-8
Th-230 nitrate
0.2016
-4.495E-3
3.918E-5
-1.154E-7
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 3/16
Gross Alpha Statistical Summary 195 Participants
The known value of this nuclide is 51.2 pCi/1 with an expected precision of 12.8; the control limits
are 29.0 to 73.4; the warning regions are 29.0 to 36.4 and 66.0 to 73.4
36(18.5 %) Failed to respond „• 37(19.0 %) Within all limits
77(39.5 %) Out of control
but not an outlier
Statistic
1
H
Respondents
' 45(23.1 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
29.99
Grand Avg 29.99
8.68
8.68
75.27
75.27
28.93
28.93
-41.43
-41.43
-2.45
-2.45
29.67
29.67
-42.06
-42.06
-2.48
-2.48
8(5.0 %) Within 1 norm. S.O.
of known value
77(48.4 %) More than 3 norm. S.D.
-------
4/16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
41.0
36.8
44.5
3.86
0.355
40.77
1.46
-1.41
AE
22.6
19.0
20.0
1.86
0.166
20.53
-1.28
-4.15
AF
20.8
21.5
24.4
1.91
0.166
22.23
-1.05
-3.92
u
AH
23.8
26.0
23.6
1.33
0.111
24.47
-0.75
-3.62
il
AJ
AK
27.4
28.5
33.1
3.02
0.263
29.67
-0.04
-2.91
AL
35.9
37.3
43.2
3.87
0.337
38.80
1.19
-1.68
AN
22.7
17.4
23.9
3.46
0.300
21.33
-1.17
-4.04
u
AP
36.3
34.5
39.2
2.37
0.217
36.67
0.90
-1.97
AR
42.0
39.0
40.0
1.53
0.138
40.33
1.40
-1.47
AU
35.8
28.4
.28.6
4.22
0.341
30.93
0.13
-2.74
AW
37.8
37.5
39.5
1.08
0.092
38.27
1.12
-1.75
AZ
4.8
5.3
4.5
0.40
0.037
4.87
-3.40
-6.27
u
BA
25.4
22.1
218
2.00
0.166
23.10
-0.93
-3.80
u
BB
v ' ' ' *" >
*"
BC
37.5
36.7
35.6
0.95
0.088
36.60
0.89
-1.98
BG
28.0
26.0
26.0
1.15
0.092
26.67
-0.45
-3.32
li-
BH
27.8
25.2
28.4
1.70
0.148
27.13
-0.39
-3.26
4'
BI
26.0
22.0
22.0
2.31
0.185
23.33
-0.90
-3.77
u
BK
32.9
34.9
33.6
1.01
0.092
33.80
0.52
-2.35
BL
58.1
43.1
59.0
8.93
0.734
53.40
3.17
0.30
BM
41.6
33.0
33.6
4.80
0.397
36.07
0.82
-2.05
BN
20.4
18.9
21.7
1.40
0.129
20.33
-1.31
-4.18
u
BO
30.4
31.4
32.2
0.90
0.083
31.33
0.18
-2.69
BS
25.8
26.1
22.3
2.11
0.175
24:73
-0.71
-3.58
C
39.3
36.5
37.7
1.40
0.129
37.83
1.06
-1.81
CA
35.2
35.1
40.4
3.03
0.245
36.90
0.94
-1.94
CE
28.5
25.2
33.9
4.39
0.401
29.20
-0.11
-2.98
CG
22.2
25.9
26.4
2.29
0.194
24.83
-0.70
-3.57
u
CJ
37.0
40.0
34.0
3.00
0.277
37.00
0.95
-1.92
CK
35.1
30.3
33.4
2.43
0.222
32.93
0.40
-2.47
CO
26.5
18.8
33.0
7.11
0.655
26.10
-0.53
-3.40
u
CP
23.0
18.0
21.0
2.52
0.231
20.67
-1.26
-4.13
CQ
25.7
26.3
22.7
1.93
0.166
24.90
-0.69
-3.56
CS
40.5
39.3
37.9
1.30
0120
39.23
1.25
-1.62
CX
•
D
.. ...
• '
DB
35.0
33.0
34.6
1.06
0.092
34.20
0.57
-2.30
DD
33.9
31.3
35.6
2.17
0.198
33.60
0.49
-2.38
DE
46.8
46.9
47.0
0.10
0.009
46.90
2.29
-0.58
DH
23.0
20.3
21.8
1.35
0.125
21.70
-1.12
-3.99
u
DI
25.1
25.8
19.5
3.45
0.291
23.47
-0.88
-3.75
u
DM
; :SIlSllsllHlS
li'Sp
DO
59.0
510
60.0
4.93
0.415
56.67
3.61
0.74
DE
•
• = No data submitted TAG SYMBOLS ft = Above control limit
0 s Insufficient data x = Determined to be an outlier s Below control limit
-------
((
^
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 5/16
Gross Alpha
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DS
18.6
15.7
20.7
2.51
0.231
18.33
-1.58
-4.45
DT
37.3
35.0
35.8
1.17
0.106
36.03
0.82
-2.05
DZ
34.0
38.1
36.1
2.05
0.189
36.07
0.82
-2.05
E
30.0
35.5
39.2
4.63
0.425
34.90
0.66
-2.21
EB
37.5
40.3
43.0
2.75
0.254
40.27
1.39
-1.48
EL
25.0
19.8
18.4
3.48
0.305
21.07
-1.21
-4.08
#
EO
21.0
29.0
27.0
4.16
0.369
25.67
-0.58
-3.46
a
ER
33.8
35.3
34.2
0.78
0.069
34.43
0.60
-2.27
EV
23.5
23.2
23.4
0.15
0.014
23.37
-0.90
-3.77
it
EW
TVr'''
fi; -SliSPpill!:
ex;
, ' * *
•
FF
26.0
27.0
32.0
3.21
0.211
28.33
-O-22
-3.09
FJ
•
v - V
» *
FL
/•i
" , - ^
FN
32.0
29.0
34.0
2.52
0.231
31.67
0.23
-2.64
FZ
23.6
25.8
33.4
5.14
0.452
27.60
-0.32
"319
I
GE
GQ
GT
GZ
46.2
37.6
39.4
4.54
0.397
41.07
1.50
-1.37
HI
18.0
23.0
20.0
2.52
0.231
20.33
-1.31
-4.18
HK
24.6
23.1
25.0
1.00
0.088
24.23
-0.78
-3.65
u
HL
22.7
22.7
22.7
0.01
0.000
22.70
-0.99
-3.86
Ji
HP
35.8
30.1
29.2
3.58
0.305
31.70
0.23
•2.64
I
29.4
44.1
29.0
8.60
0.697
34.17
0.57
-2.30
IC
18.6
21.7
19.6
1.58
0.143
19.97
-1.36
-4.23
u
ID
23.6
22.9
20.3
1.74
0.152
22.27
-1.04
-3.92
J
495
48.9
54.2
2.90
0.245
50.87
2.83
-0.05
«JE; ¦
+
JG
23.2
22.8
22.5
0.35
0.032
22.83
-0.97
-3.84
u'
JM
25.0
27.3
28.5
1.78
0.162
26.93
-0.41
-3.28
JN
33.8
42.7
36.6
4.55
0.411
37.70
1.04
-1.83
JP
30.6
30.5
29.3
0.72
0.060
30.13
0.02
-2.85
JQ
37.7
40.8
43.8
3.05
0.281
40.77
1.46
-1.41
JS
29.1
29.8
33.3
2.25
0194
30.73
0.10
¦2.11
JY
¦ ¦¦ # ,
K
24.4
31.6
29.0
3.65
0.332
28.33
-0.22
-3.09
KE
31.0
42.1
35.8
5.57
0.512
36.30
0.85
-2.02
KH
40.5
38.0
39.0
1.26
0.115
39.17
1.24
-1.63
KT
36.0
38.0
40.0
2.00
0.185
38.00
1.08
-1.79
KX
20.0
24.0
22.0
2.00
0.185
22.00
-1.08
-3.95
u
L
40.0
39.8
46.8
3.98
0.323
42.20
1.65
-1.22
LF
320
32.°
32.°
0.00
0.000
32.00
0.27
-2.60
LL
LR
116
10.6
12.9
1.15
0.106
11.70
-2.47
-5.35
V
• a No data submitted
TAG SYMBOLS
IT = Above control limit
0 = Insufficient data
x =
Determined to be an outlier
<11 = Below control limit
yj
-------
r
6/16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
\ '
Gross Alpha
'
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tng
LT
21.1
26.8
22.0
3.06
0.263
23.30
-0.90
-3.78
11
M
19.0
22.0
18.0
2.08
0.185
19.67
-1.40
-4.27
11
MA
MF
34.7
35.3
33.7
0.81
0.074
34.57
0.62
-2.25
MQ
31.0
34.0
36.0
2.52
0.231
33.67
0.50
-2.37
MV
41.0
42.0
40.0
1.00
0.092
41.00
1.49
-1.38
MX
14.9
15.7
17.9
1.55
0.138
16.17
-1.87
-4.74
U
MY
'
N
SiliilSlll
• ^:
NA
38.7
36.6
40.8
2.10
0.194
38.70
1.18
-1.69
NB
18.6
15.2
14.0
2.39
0.212
15.93
-1.90
-4.77
u
NJ
21.0
21.0
22.0
0.58
0.046
21.33
-1.17
-4.04
u
NK
27.2
31.3
26.1
2.74
0.240
28.20
-0.24
-3.11
u
NO
27.0
28.0
29.0
1.00
0.092
28.00
-0.27
-3.14
n
NP
33.3
46.6
30.3
8.68
0.752
36.73
0.91
-1.96
NT
25.3
27.9
26.6
1.30
0.120
26.60
-0.46
-3.33
u
O
37.6
41.3
40.5
1.95
0.171
39.80
1.33
-1.54
OA
230
270
280
265
0231
26.00
-0.54
-3.41
j
OB
V <
OF
29.0
29.0
33.0
2.31
0.185
30 33
0.05
-2.82
OS
32.0
30.0
33.0
1.53
0.138
31.67
0.23
-2.64
OX
22.1
23.5
26.2
2.08
0.189
23.93
-0.82
-3.69
OY
33.0
34.0
32.0
1.00
0.092
33.00
0.41
-2.46
OZ
25.1
21.4
23.6
1.86
0.171
23.37
-0.90
-3.77
P
37.5
33.0
36.5
2.36
0.208
35.67
0.77
-2.10
PB
50.5
48.6
47.8
1.39
0.125
48.97
2.57
-0.30
PG
39.1
39.1
39.3
0.12
0.009
39.17
1.24
-1.63
PM
44.5
42.2
38.7
2.92
0.268
41.80
1.60
-1.27
PQ
29.0
35.9
26.5
4.87
0.434
30.47
0.07
-2.81
PR
52.7
49.6
53.2
1.95
0.166
51.83
2.96
0.09
PV
38,0
26.7
37.0
6.26
0.521
33.90
0.53
-2.34
Q
21.2
18.9
17.6
1.82
0.166
19.23
-1.46
-4.33
n
QC
23.3
26.9
20.6
316
0.291
23.60
-0.86
-3.73
,,L,,
QM
QP
33.0
35.0
26.0
4.73
0.415
31.33
0.18
-2.69
QQ
37.6
35.7
38.3
1.35
0.120
37.20
0.98
-1.89
QT
39.5
33.3
31.0
4.40
0.392
34.60
0.62
-2.25
QU
18.7
18.5
18.5
0.12
0.009
18.57
-1.55
-4.42
- u
QW
17.2
19.1
18.3
0.95
0.088
18.20
-1.59
-4.47
n
QX
20.8
20.2
19.6
0.60
0.055
20.20
-1.32
-4.19
u
QZ
28.9
33.4
31.7
2.27
0.208
31.33
0.18
-2.69
R
26.2
23.6
24.9
1.30
0.120
24.90
-0.69
-3.56
n
RB
26.9
23.3
20.6
3.16
0.291
23.60
-0.86
-3.73
u
RD
35.5
34.6
36.2
0.80
0.074
35.43
0.74
-2.13
RG
27.9
28.8
27.0
0.90
0.083
27.90
-0.28
-3.15
u
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
1 0 S
v-
Insufficient data
x =
Determined to be an outlier
II = Below control limit
4
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 7/16
/ ' 1
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
RI
28.3
27.1
24.5
1.94
0.175
26.63
-0.45
-3.32
RR
300
34.0
30.0
2.31
0.185
31.33
0.18
-2.69
RU
RV
27.6
31.0
28.6
1.75
0.157
29.07
-0.12
-3.00
RW
26.6
27.4
27.0
0.40
0.037
27.00
-0.40
-3.27
RZ
43.4
44.3
42.0
1.16
0.106
43.23
1.79
-1.08
S
34.8
36.3
35.9
0.78
0.069
35.67
0.77
-2.10
sc
25.6
24.6
29.0
2.31
0.203
26.40
-0.49
-3.36
Jl
SD
25.9
25.1
26.3
0.61
0.055
25.77
-0.57
-3.44
SF
33.2
35.3
37.1
1.95
0.180
35.20
0.71
-2.17
SO
' ' •. •
•
SI
24.5
25.1
27.9
1.81
0.157
25.83
-0.56
-3.43
u
SL
35.0
38.6
36.5
1.81
0.166
36.70
0.91
-1.96
SM
25.7
27.0
25.5
0.81
0.069
26.07
-0.53
-3.40
u
SN
24.1
22.2
26.7
2.26
0.208
24.33
-0.76
. -3.64
u
SO
35.3
33.8
34.4
0.75
0.069
34.50
0.61
-2.26
SR
33.8
39.7
36.9
2.95
0.272
36.80
0.92
-1.95
ss
21.0
18.7
22.8
2.06
0.189
20.83
-1.24
-4.11
u
ST
30.4
27.0
27.1
!93
0.157
28.17
-0.25
-3.12
a
su
I".!'
'•i'
' ; .*;¦• •- f.> \"r
sx
35.4
41.3
37.3
3.01
0.272
38.00
1.08
-1.79
sz
34.0
34.5
29.7
2.64
0.222
32.73
0.37
-2.50
T
28.3
30.1
27.9
1.17
0.102
28.77
-0.17
-3.04
u
TD
46.3
42.2
47.4
2.74
0.240
45.30
2.07
-0.80
TG
20.0
20.5
20.2
0.25
0.023
20.23
-1.32
-4.19
u
TH
33.3
37.1
36.6
2.06
0.175
35.67
0.77
-2.10
TT
22.5
29.6
27.7
3.68
0.328
26.60
-0.46
-3.33
u
TJ
•
TL
37.4
33.8
26.9
5.34
0.485
32.70
0.37
-2.50
TN
20.5
20.9
18.2
1.46
0.125
19.87
-1.37
-4.24
J
TO
- :V
TQ
34.1
35.2
34.6
0.55
0.051
34.63
0.63
-2.24
TW
^ ) MS
TY
34.3
20.4
22.8
7.43
0.641
25.83
-0.56
-3.43
U
33.1
31.3
31.0
1.14
0.097
31.80
0.25
-2.63 _
UA
• . .: •.'Vkv
-.¦>'4 ,4'
« t ^
UE
* * '*
*
UN
24.3
24.4
24.3
0.06
0.005
24.33
-0.76
-3.64
u
UP
46.7
39.8
48.9
4.75
0.420
45.13
2.05
-0.82
UQ
30.0
31.0
28.0
1.53
0.138
29.67
-0.04
-2.91
UW
33.4
32.8
28.2
2.84
0.240
31.47
0.20
-2.67
UY
< \ •;.
VA
-1"?¦ V" ' ¦'i;y
-•.'
VC
7.9
8.7
9.0
0.57
0.051
8.53
-2.90
-5.77
"i
VG
• = No data submitted
0 s Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
11 = Below control limit
-------
((
N
8/16
>•
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
Gross Alpha
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VH
21,4
23.6
22.4 1.10
0.102
22.47 -1.02
-3.89
li
VI
22.0
23.9
18.2 2.90
0.263
21.37 -1.17
-4.04
11
VJ
14.7
19.9
19.2 2.82
0.240
17.93 -1.63
-4.50
li
VO
30.1
26.6
26.7 1.99
0.162
27.80 -0.30
-3.17
H
VT
•
W
48.4
41.0
39.1 4.91
0.429
42.83 1.74
-1.13
WD
WE
29.3
11.7
9.1 10.99
0.932
16.70 -1.80
-4.67
li
WF
16.0
18.0
22.0 3.06
0.277
18.67 -1.53
-4.40
li
WH
SSliliii
*'• ,
WJ
22.6
24.9
22.3 1.42
0.120
23.27 -0.91
-3.78
li
WK
25.4
300
30.9 2.95
0.254
28.77 -0.17
-3.04
li
WN
~
WO
29.4
34.8
28.0 3.59
0.314
30.73 0.10
-2.77
X
17.9
15.5
18.4 1.55
0.134
' 17.27 -1.72
-4.59
11
Data sorted by Laboratory Averaf
fe
Average
TaK
Lab
Average
Tag
Lab
Average
Tag
Lab
4.87
li
AZ
21.70
u
DH
25.83
li
TY
8.53
li
VC
22.00
11
KX
25.83
li
SI
11.70
li
LR
22.23
li
AF
26.00
li
OA
15.93
li
NB
22.27
li
ID
26.07
li
SM
16.17
li
MX
22.47
u
VH
26.10
li
CO
16.70
li'
WE
22.70
li
HL
26.40
li
SC
17.27
u
X
22.83
u
JG
26.60
li
TI
17.93
li
VJ
23.10
li
BA
26.60
li
NT
18.20
li
QW
23.27
11'
WJ
26.63
li
RI
18.33
li
DS
23.30
li
LT
26.67
li
BG
18.57
u
QU
23.33
11
BI
26.93
11
JM
18.67
ii
WF
23.37
11
OZ
27.00
li
RW
19.23
u
Q
23.37
11
EV
27.13
li
BH
19.67
u
M
23.47
11
DI
27.60
li
FZ
19.87
u
TN
23.60
u
RB
27.80
li
VO
19.97
u
IC
23.60
ii
QC
27.90
li
RG
20.20
u
QX
23.93
ii
OX
28.00
li
NO
20.23
u
TG
24.23
li
HK
28.17
li
ST
20.33
u
HI
24.33
ii
UN
28.20
li
NK
20.33
u
BN
24.33
li
SN
28.33
li
K
20.53
u
AE
24.47
li
AH
28.33
li
FF
20.67
u
CP
24.73
li
BS
28.77
li
WK
20.83
ii
ss
24.83
li
CG
28.77
li
T
21.07
ii
EL
24.90
li
R
29.07
RV
21.33
u
NJ
24.90
11
CQ
29.20
CE
21.33
u
AN
25.67
li
EO
29.67
UQ
21.37
VI
25.77
li
SD
29.67
AK
• s No data submitted
TAG SYMBOLS
IT s Above control limit
0 = Insufficient data
^
x = Determined to be an outlier
li s Below control limit
— JJ
-------
(( 1
:—S\
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
9/16
Gross Alpha
>
Data sorted by Laboratory Averaj
fe
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
30.13
JP
34.43
ER
38.00
KT
30.33
OF
34.50
SO
38.27
AW
30.47
PQ
34.57
MF
38.70
NA
30.73
WO
34.60
QT
38.80
AL
30.73
JS
34.63
TQ
39.17
PG
30.93
AU
34.90
E
39.17
KH
31.33
RR
35.20
SF
39.23
CS
31.33
QZ
35.43
RD
39.80
O
31.33
QP
35.67
TH
40,27
EB
31.33
BO
35.67
S
40.33
AR
31.47
UW
35.67
P
40.77
JQ
31.67
OS
36.03
DT
40.77
A
31.67
FN
36.07
DZ
41.00
MV
31.70
HP
36.07
BM
41.07
GZ
31.80
U
36.30
KE
41.80
PM
32.00
LF
36.60
BC
42.20
L
32.70
TL
36.67
AP
42.83
W
32.73
SZ
36.70
SL
43.23
RZ
32.93
CK
36.73
NP
45.13
-- -
UP
33.00
OY
36.80
SR
45.30
TD
33.60
DD
36.90
CA
46.90
DE
33.67
MQ
37.00
CJ
48.97
PB
33.80
BK
37.20
QQ
50.87
J
33.90
PV
37.70
JN
51.83
PR
34.17
I
37.83
C
53.40
BL
34.20
DB
38.00
SX
56.67
DO
% responding labs
10-1—-
Frequency distribution
oJ-r
-¦iflihfililfm
*
-r
T
—1—
+*
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10-1
-i 1 1 T 1¦—f" "T* - I
-6 -4 -2 0+2+4
Normalized deviation of the mean from the grand average
= No data submitted
= Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
U s Below control limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
10/16
Gross Beta Statistical Summary 195 Participants
The known value of this nuclide is 24.8 pCi/1 with an expected precision of 5.0; the control limit*
are 16.1 to 33.5; the warning regions are 16.1 to 19.0 and 30.6 to 33.5
33(16.9 °/o) Failed to respond
; 123(63.1 %) Within all limits
2( 1.0 %) Outliers •' \K
11 (5.6 %) Out of control •
26(13.3 %) In warning zone
but not an outlier
but within control
Statistic
Respondents
Non-outliers
Mean
27.16 .
Grand Avg 27.09
Std. Dev.
5.16
4.43
Variance
26.67
19.58
% Coef. of Var.
19.01
16.34
% deviation of mean from known value
9.53
9.23
Norm. dev. of mean from known value
0.46
0.52
Median
27.50
27.50
% deviation of median from known value
10.89
10.89
Norm. dev. of median from known value
0.52
0.61
13(8.0 %) More than 3 norm. S.D.
26(16.0 %) Between 2 and 3 norm. S.
61(37.7 %) Within 1 norm. S.D.
of known value
62(38.3 %) Between 1 and 2 norm. S.D.
-------
(?
Jv
11/16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
r
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
27.6
28.1
25.2
1.55
0.343
26.97
-0.04
0.75
AE
25.7
22.0
24.3
1.87
0.437
24.00
-1.07
-0.28
AF
28.7
23.6
25.1
2.62
0.602
25.80
-0.45
0.35
AH
30.4
28.7
28.1
1.19
0.272
29.07
0.68
1.48
AJ
..... ^
AK
29.4
33.9
30.1
2.42
0.532
31.13
1.40
2.19
AL
27.2
28.6
26.7
0.98
0.224
27.50
0.14
0.94
AN
34.1
35.4
32.8
1.30
0.307
34.10
2.43
3.22
If
AP
25.5
24.9
23.8
0.86
0.201
24.73
-0.82
-0.02
AR
29.0
31.0
30.0
1.00
0.236
30.00
1.01
1.80
AU
31.6
31.3
31.7
0.21
0.047
31.53
1.54
2.33
AW
31.0
31.3
31.6
0.30
0.071
31.30
1.46
2.25
AZ
20.4
18.4
13.8
3.38
0.780
17.53
-3.31
-2.52
BA
27.9
32.5
26.1
3.30
0.756
,.28-83
0.60
1.40
BB
-v
BC
19.6
22.1
19.9
1.37
0.295
20.53
-2.27
-1.48
BG
27.0
27.0
27.0
0.00
0.000
27.00
-0.03
0.76
BH
26.9
26.4
27.8
0.71
0.165
27.03
-0.02
0.77
BI
42.0
38.0
36.0
3.06
0.709
38.67
4.01
4.80
ir
BK
30.5
30.7
32.0
0.81
0.177
31.07
1.38
2.17
BL
26.1
28.0
30.2
2.05
0.484
28.10
0.35
1.14
BM
30.4
30.7
30.2
0.25
0.059
30.43
1.16
1.95
BN
23.7
25.3
27.5
1.91
0.449
25.50
-0.55
0.24
BO
22.5
25.3
26.4
2.01
0.461
24.73
-0.82
-0.02
BS
30.9
30.3
29.9
0.50
0.118
30.37
1.14
1.93
C
22.2
24.3
22.4
1.16
0.248
22.97
-1.43
-0.64
CA
26.1
23.2
23.6
1.57
0.343
24.30
-0.97
-0.17
CE
27.5
26.0
25.2
1.17
0.272
26.23
-0.30
0.50
CG
21.8
23.9
21.0
1.50
0.343
22.23
-1.68
-0.89
CJ
25.0
27.0
24.0
1.53
0.354
25.33
-0.61
0.18
CK
28.1
31.9
31.8
2.17
0.449
30.60
1.22
2.01
CO
16.8
20.2
20.6
2.09
0.449
19.20
-2.73
-1.94
CP
31.0
27.0
29.0
2.00
0.473
29.00
0.66
1.45
CQ
27.0
28.0
29.0
1.00
0.236
28.00
0.32
1.11
cs
24.0
27.0
24.2
1.68
0.354
25.07
-0.70
0.09
cx
D
DB
29.5
26.8
27.3
1.44
0.319
27.87
0.27
1.06
DD
31.3
29.1
29.7
1.14
0.260
30.03
1.02
1.81
DE
25.3
25.4
25.4
0.06
0.012
25.37
-0.60
0.20
DH
28.7
28.6
27.8
0.49
0.106
28.37
0.44
1.24
DI
20.5
20.8
21.4
0.46
0.106
20.90
-2.14
-1.35
DM
29.6
27.6
30.6
1.53
0.354
29.27
0.75
1.55
DO
26.0
18.0
26.0
4.62
0.945
23.33
-1.30
-0.51
DR
• -
• =
No data submitted
TAG SYMBOLS
1T = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U = Below control limit
¦y
-------
(r
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 12/16
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DS
23.2
20.8
33.4
6.69
1.930
25.80
-0.45
0.35
DT
29.7
30.4
28.6
0.91
0.213
29.57
0.86
1.65
DZ
25.0
26.9
23.5
1.70
0.402
25.13
-0.68
0.12
E
30.1
30.2
29.5
0.38
0.083
29.93
0.99
1.78
EB
30.5
30.8
. 29.5
0.68
0.154
30.27
1.10
1.89
EL
27.0
28.3
28.4
0.78
0.165
27.90
0.28
1.07
EO
29.0
29.0
30.0
0.58
0.118
29.33
0.78
1.57
ER
* ' " -XV V -v v
- •
EV
26.9
27.1
27.7
0.42
0.095
27.23
0.05
0.84
EW
31.5
271
30.6
2.32
0.520
29.73
0.92
1.71
EX
#¦-;"~\T: Jv*"1 'J-
FF
270
26.0
26.0
0.58
0.118
26.33
:0-26
0.53
FJ
¦' v ¦
FL
•
FN
31.0
30.0
28.0
1.53
0.354
29.67
0.89
1.69
FZ
24.8
19.2
25.4
3.42
0.732
23.13
-1.37
-0.58
GE
28.0
28.0
26.0
1.15
0.236
27.33
0.08
0.88
GQ
V- „ - •
GT
<
-------
* —
13/16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
V.
^
Gross Beta
1
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LT
25.0
34.0
32.3
4.78
1.120
30.43
1.16
1.95
M
9.6
8.6
10.6
1.00
0.236
9.60
>6.06
-5 27:
MA
19.0
24.4
18.7
3.21
0.673
20.70
-2.21
-1.42
MF
23.7
24.4
24.2
' 0.36
0.083
24.10
-1.04
-0.24
MQ
36.0
28.0
30.0
4.16
0.945
31.33
1.47
2.26
MV
28.0
32.0
30.0
2.00
0.473
30.00
1.01
1.80
MX
199
16.3
18.9
186
0.425
18.37
, -3.02
. z2:2?
my:
N
; V
1. >
?y'
•
•
NA
28.7
28.2
29.1
0.45
0.106
28.67
0.55
1.34
NB
23.2
20.1
16.5
3.35
0.791
19.93
-2.48
-1.69
NJ
22.6
21.0
20.0
1.31
0.307
21.20
-2.04
-1.25
NK
32.6
33.8
33.5
0.62
0.142
33.30
2.15
2.94
NO
24.0
25.0
26.0
1.00
0.236
25.00
-0.72
0.07
NP
15.0
7.7
17.5
5.09
1.300
13.40
-4.74
-3.95
NT
28.9
29.2
29.1
0.15
0.035
29.07
0.68
1.48
O
26.0
28.2
27.1
1.10
0.260
27.10
0.00
0.80
OA
29.°
28.0
27.0
100
0.236
28.00
0.32
i.u
OB
;¦?>•' V'.-:
¦' •: :>.V: ;
m***
OF
24.0
23.0
23.0
0.58
0.118
23.33
-1.30
-0.51
OS
30.0
31.0
29.0
1.00
0.236
30.00
1.01
1.80
OX
28.9
27.9
31.1
1.64
0.378
29.30
0.77
1.56
OY
20.0
19.0
19.0
0.58
0.118
19.33
-2.69
-1.89
OZ
31.7
29.6
25.6
3.10
0.721
28.97
0.65
1.44
P
30.4
28.0
33.8
2.91
0.685
30,73
1.26
2.06
PB
25.7
26.1
26.9
0.61
0.142
26.23
-0.30
0.50
PG
25.6
24.4
27.2
1.40
0.331
25.73
-0.47
0.32
PM
27.8
31.3
26.9
2.32
0.520
28.67
0.55
1.34
PQ
25.7
25.4
28.1
1.48
0.319
26.40
-0.24
0.55
PR
32.0
30.5
29.7
1.17
0.272
30.73
1.26
2.06
PV
29.5
19.5
22.9
5.08
1.345
23.97
-1.08
-0.29
Q
30.2
31.5
30.2
0.75
0.154
30.63
. 1.23
2.02
QC
23.6
24.1
25.7
110
0.248
24.47
-0.9i
-0.12
QM
, ' : ,4',,
•
QP
28.0
30.0
30.0
1.15
0.236
29.33
0.78
1.57
QQ
30.6
29.1
31.3
1.12
0.260
30.33
1.12
1.92
QT
24.9
47.1
26.5
12.38
4.091
32.83
1.99
2.78
QU
21.3
20.0
18.7
1.30
0.307
20.00
-2.46
-1.66
QW
20.2
18.4
18.6
0.99
0.213
19.07
-2.78
-1.99
QX
27.6
28.0
26.9
0.56
0.130
27.50
0.14
0.94
Qz
24.5
25.3
24.5
0.46
0.095
24.77
-0.80
-0.01
R
38.1
27.8
33.0
5.15
1.413
32.97
2.04
2.83
RB
25.7
24.1
23.6
1.10
0.248
24.47
-0.91
-0.12
RD
31.6
29.8
31.3
0.96
0.213
30.90
1.32
2.11
RG
31.0
31.8
31.2
0.42
0.095
31.33
1.47
2.26
• =
No data submitted
TAG SYMBOLS
1T = Above control limit
0 =
v
Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
->j
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 14 / 16
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
HI
30.3
29.4
27.3
1.54
0.354
29.00
0.66
1.45
RR
300
28.0
27.0
1.53
0.354
28.33
0.43
1.22
RU
RV
34.6
34.3
33.9
0.35
0.083
34.27
2.49
3.28
ir
RW
16.6
19.8
18.2
1.60
0.378
18.20
-3.08
-2.29
RZ
36.0
35.3
29.8
3.40
0.732
33.70
2.29
3.08
it
S
29.1
29.4
30.0
0.46
0.106
29.50
0.83
1.63
sc
27.5
24.8
27.5
1.56
0.319
26.60
-0.17
0.62
SD
16.7
14.4
18.7
2.15
0.508
16.60
-3.63
-2.84
SF
29.3
29.0
30.8
0.96
0.213
29.70
0.90
1.70
SG
• • .y:"'
SI
21.1
20.0
23.6
1.84
0.425
21.57
-1.91
-1.12
SL
31.0
30.0
29.0
1.00
0.236
30.00
1.01
1.80
SM
24.6
28.6
24.1
2.47
0.532
25.77
-0.46
0.33
SN
27.3
27.9
26.7
0.60
0.142
27.30
0.07
0.87
SO
26.7
28.8
29.6
1.50
0.343
28.37
0.44
1.24
SR
28.5
34.4
31.4
2.95
0.697
31.43
1.50
2.30
ss
24.9
23.0
22.0
1.47
0.343
23.30
-1.31
-0.52
ST
25.7
27.9
28.0
130
0.272
27.20
0.04
0.83
su
TV
SX
25.0
28.7
23.7
2.59
0.591
25.80
-0.45
0.35
sz
22.9
28.1
24.8
2.63
0.614
25.27
-0.63
0.16
T
26.0
24.7
26.6
0.97
0.224
25.77
-0.46
0.33
TD
15.8
16.8
19.2
1.75
0.402
17.27
-3.40
-2.61
TG
18.2
20.6
18.7
1.27
0.284
19.17
-2.74
-1.95
TH
21.2
28.9
23.5
3.95
0.910
24.53
-0.89
-0.09
TI
30.2
29.6
29.5
038
0.083
29.77
0.93
1.72
TJ
TL
36.9
36.2
33.2
1.97
0.437
35.43
2.89
3.68
it
TN
33.0
28.6
32.7
2.46
0.520
31.43
1.50
2.30
TO
•
TQ
22.3
22.5
23.7
0.76
0.165
22.83
-1.47
-0.68
TW
> * " , <
TY
30.7
31.0
27.7
1.82
0.390
29.80
0.94
1.73
U
319
308
30.3
0.82
0.189
3100
1.35
2.15
UA
•
UE
'''
9
UN
28.5
27.2
24.4
2.10
0.484
26.70
-0.13
0.66
UP
35.8
39.5
29,8
4.90
1.278
35.03
2.75
3.54
It
UQ
28.0
29.0
29.0
0.58
0.118
28.67
0.55
1.34
UW
29.5
29.9
29.5
0.23
0.047
29.63
0.88
1.67
UY
26.5
26.7
25.6
0.59
0130
26.27
-0.29
0.51
VA
VC
18.9
18.2
20.3
1.07
0.248
19.13
-2.76
-1.96
VG
• =
. 0 ^
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U = Below control limit
-------
ft
^
15/16
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
r
Gross Beta
Lab
Exper.
Rng anal
Normalized deviation
Res. 1 Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VH
27.9
26.5
22.7 2.69
0.614
25.70 -0.48
0.31
VI
16.2
16.8
15.7 0.55
0.130
16.23 -3.76
-2.97
VJ
22.9
23.4
22.4 0.50
0.118
22.90 -1.45
-0.66
VO
35.7
32.1
34.5 1.83
0.425
34.10 2.43
3.22
IT
VT
''' ,y.
W
26.4
25.4
30.7 2.82
0.626
27.50 0.14
0.94
WD
illlllBlil
WE
23.4
38.9
26.0 8.30
2.583
29.43 0.81
1.61
WF
29.0
29.0
27.0 1.15
0.236
28.33 0.43
1.22
WH
• ¦
WJ
31.7
42.2
33.5 5.62
1.458
35.80 3.02
3.81
it
WK
53.0
52.0
65.0 7.23
2.020
56.67 10.25
11.04
X
WN
WO
17.6
24.0
19.0 3.36
0.756
20.20 -2.39
-1.59
X
29.0
29.8
32.2 1.67
0.378
30.33 1.12
1.92
Data sorted by Laboratory Averaj
f©
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.60
X
M
23.30
SS
25.77
T
13.40
NP
23.33
OF
25.77
SM
16.23
VI
23.33
DO
25.80
SX
16.60
SD
23.97
PV
25.80
DS
16.67
LR
24.00
m
25.80
AF
17.27
TD
24.00
AE
25.93
JS
17.53
AZ
24.10
MF
26.23
PB
18.20
RW
24.30
CA
26.23
JP
18.37
MX
24.47
RB
26.23
CE
19.07
QW
24.47
QC
26.27
UY
19.13
VC
24.53
TH
26.33
FF
19.17
TG
24.73
BO
26.40
PQ
19.20
CO
24.73
AP
26.60
SC
19.33
OY
24.77
QZ
26.70
UN
19.93
NB
24.80
JQ
26.97
A
20.00
QU
24.97
KE
27.00
BG
20.20
WO
25.00
NO
27.03
BH
20.53
BC
25.03
L
27.10
O
20.70
MA
25.07
CS
27.17
ID
20.90
DI
25.13
DZ
27.20
ST
21.20
NJ
25.27
SZ
27.23
EV
21.57
SI
25.33
CJ
27.30
SN
22.23
CG
25.37
DE
27.33
KT
22.83
TQ
25.50
BN
27.33
K
22.90
VJ
25.70
VH
27.33
IC
22.97
C
25.73
J
27.33
GE
23.13
FZ
25.73
PG
27.50
W
• = No data submitted
TAG SYMBOLS
IT = Above control limit !
0 = Insufficient data
V
x s Determined to be an outlier
= Below control limit j
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 16/16
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
27.50
QX
29.33
EO
30.73
PR
27.50
AL
29.43
WE
30.90
RD
27.87
JN
29.50
S
31.00
U
27.87
DB
29.50
JG
31.03
HK
27.90
EL
29.57
DT
31.07
BK
28.00
OA
29.63
UW
31.13
AK
28.00
CQ
29.67
KX
31.30
AW
28.10
BL
29.67
FN
31.33
RG
28.33
WF
29.70
SF
31.33
MQ
28.33
RR
29.73
EW
31.43
TN
28.37
SO
29.77
TI
31.43
SR
28.37
DH
29.80
TY
31.53
AU
28.67
UQ
29.93
E
32.53
I
28.67
PM
30.00
SL
32.83
QT
28.67
NA
30.00
OS
32.97
R
28.67
LF
30.00
MV
33.30
NK
28.83
BA
30.00
AR
33.70
ft '
RZ
28.97
OZ
30.03
DD
34.10
ft ,
VO
29.00
RI
30.27
EB
34.10
ft "
AN
29.00
KH
30.33
X
34.27
ft
RV
29.00
HL
30.33
QQ
35.03
ft
UP
29.00
CP
30.37
BS
35.20
It
HP
29.07
NT
30.43
LT
35.43
ft
TL
29.07
AH
30.43
BM
35.80
ft
WJ
29.27
DM
30.60
CK
36.50
ft
JM
29.30
OX
30.63
Q
38.67
ft
BI
29.33
QP
30.73
P
56.67
X
WK
% responding labs
Frequency distribution
1 iMli
—"j" "~T
-6
responding labs
-4 -2 d +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
—r-
+6
-j l |Mljilllpi.
—r"
+6
-6
-4 -2 0 +2+4
Normalized deviation of the mean from the grand average
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT s Above control limit
li 3 Below control limit
-------
•United States Office of Research and EPA/600/R-96/023
Environmental Protection Development February 1996
Agency Washington, DC 20460
Gamma in Water
Performance
Evaluation Study
A Statistical Evaluation of
the November 3,1995 Data
Q23RSL96 OQV-023
-------
Gamma in Water
Performance Evaluation Study
November 3, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
A
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
\7
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Gamma in Water; November 3,1995.
The Known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemlstry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
1/37
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next hv a new pope or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and steals
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/37
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum result* for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the"
laboratory's three results. The standard error of the mean is calculated by dividing the expected '
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the knowii value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
3/37
Cobalt-60 Statistical Summary 193 Participants
The known value of this nuclide is 60.0 pCi/1 with an expected precision of 5.0; the control limits
are 51.3 to 68.7; the warning regions are 51.3 to 54.2 and 65.8 to 68.7
33(17.1 %) Failed to respond
. 136(70.5 %) Within all limits
4(2.1 %) Outliers * / \K
'""JP
8(4.1 %) Out of control'
*** 12(6.2 %) In warning zone
but not an outlier
but within control
Statistic
Respondents
Non-outliers
Mean
65.31
Grand Avg 59.65
Std. Dev.
47.67
4.05
Variance
2272.59
16.44
%Coef. ofVar.
72.99
6.80
% deviation of mean from known value
8.85
-0.58
Norm. dev. of mean from known value
0.11
-0.09
Median
59.67
59.67
% deviation of median from known value
-0.56
-0.56
Norm. dev. of median from known value
-0.01
-0.08
12(7.5 %) More than 3 norm. S.D.
12(7.5 %) Between 2 and 3 norm. S.D
; 92(57.5 %) Within 1 norm. S.D.
¦
of known value
* 44(27.5 %) Between 1 and 2 norm. S.D.
-------
4/37
CRD-LV Performance Evaluation: Gamma in Water,
3-Nov-1995
Cobalt>60
T 1_
Res. 1
Res. 2
Exper.
Rng anal
Normali2ed deviation
Lab
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tasr
A
54.0
52.0
50.0
2.00
0.473
52.00
-2.65
-2.77
AE
61.0
62.0
61.0
0.58
0.118
61.33
0.58
0.46
AF
61.0
59.0
59.0
1.15
0.236
59.67
0.01
-0.12
AH
57.0
53.0
55.0
2.00
0.473
55.00
-1.61
-1.73
AI
•
AJ
61.0
58.0
60.0
1.53
0.354
59.67
0.01
-0.12
AK
62.0
58.0
59.0
2.08
0.473
59.67
0.01
-0.12
AL
52.0
52.0
55.0
1.73
0.354
53.00
-2.30
-2.42
AN
63.0
62.0
57.0
3.21
0.709
60.67
0.35
0.23
AP
61.0
60.0
61.0
0.58
0.118
60.67
0.35
0.23
AU
58.0
58.0
58.0
0.00
0.000
58.00
-0.57
-0.69
AW
58.0
57.0
59.0
1.00
0.236
58.00
-0.57
-0.69
AY
65.0
64.0
66.0
1.00
0.236
65.00
1.85
1.73
AZ
67.0
52.0
52.0
8.66
2.470
57.00
-0.92
-1.04
BA
68.0
67.0
63.0
2.65
0.591
66.00
2.20
2.08
BB
61.0
61.0
61.0
0.00
0.000
61.00
0.47
0.35
BC
57.0
56.0
58.0
1.00
0.236
57.00
-0.92
-1.04
BG
90.0
46.0
72.0
22.12
8.996
69.33
3.35
3.23
ft
BH
62.0
63.0
61.0
LOO
0.236
62.00
0.81
0.69
BI
#-
BK
64.0
62.0
63.0
1.00
0.236
63.00
1.16
1.04
BL
63.0
58.0
59.0
2.65
0.591
60.00
0.12
0.00
BM
58.0
61.0
62.0
2.08
0.473
60.33
0.24
0.12
BN
60.0
57.0
59.0
1.53
0.354
58.67
-0.34
-0.46
BO
58.0
60.0
55.0
2.52
0.591
57.67
-0.69
-0.81
BW
ppiiSiSvrilnllS'
IfltKlSIIlt
C
56.0
55.0
56.0
0.58
0.118
55.67
-1.38
-1.50
CA
62.0
59.0
65.0
3.00
0.709
62.00
0.81
0.69
CC
58.0
59.0
59.0
0.58
0.118
58.67
-0.34
-0.46
CE
64.0
63.0
62.0
1.00
0236
63.00
1.16
1.04
CG
jlllllP in
CJ
51.0
58.0
65.0
7.00
2.245
58.00
-0.57
-0.69
CK
64.0
62.0
62.0
1.15
0.236
62.67
1.05
0.92
CM
610
62.0
56.0
321
0.709
59.67
0.01
-0.12
ca
•
CP
51.0
60.0
56.0
4.51
1.120
55.67
-1.38
-1.50
CQ
60.0
66.0
60.0
3.46
0.709
62.00
0.81
0.69
CS
71.0
72.0
73.0
1.00
0.236
72.00
4.28
4.16
ft
CX
n
58.0
61.0
610
1.73
' ^ -
0.354
60.00
0.12
0.00
. V
'
JJ
DD
60.0
58.0
59.0
1.00
0.236
59.00
-0.23
-0.35
DE
57.0
58.0
58.0
0.58
0.118
57.67
-0.69
-0.81
DG
63.0
63.0
62.0
0.58
0.118
62.67
1.05
0.92
DH
61.0
62.0
60.0
1.00
0.236
61.00
0.47
0.35
DL
63.0
62.0
61.0
1.00
0.236
62.00
0.81
0.69
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
0 s
^
Insufficient data
x =
Determined to be an outlier
U = Below control limit
'j
-------
((
CRD-LV Performance Evaluation: Gamma in Water,
3-Nov-1995
^
5/37
Cobalt-60
¦ -
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
54.0
55.0
55.0
0.58
0.118
54.67
-1.73
-1.85
DO
59.0
64.0
65.0
3.21
0.709
62.67
1.05
0.92
DR
' ' 'V . ¦
<• - ;
DT
56.0
57.0
60.0
2.08
0.473
57.67
-0.69
-0.81
DZ
58.0
62.0
> 59.0
2.08
0.473
59.67
0.01
-0.12
E
58.0
58.0
59.0
0.58
0.118
58.33
-0.46
-0.58
EA
60.0
61.0
60.0
0.58
0.118
60.33
0.24
0.12
EB
55.0
55.0
56.0
0.58
0.118
55.33
-1.50
-1.62
EL
58.0
58.0
61.0
1.73
0.354
59.00
-0.23
-0.35
EW
- • . < -K
- *"
EX
66.0
67.0
71.0
2.65
0.591
68.00
2.89
2.77
EZ
56.0
59.0
62.0
3.00
0.709
59.00
-0.23
-0.35
FJ
61.0
62.0
61.0
0.58
0.118
61.33
0.58
0.46
FK
•: -v:
• • - -•
FL
62.0
67.0
61.0
3.21
0.709
63.33
1.28
115
FU
S ' ' s' < " *
FZ
53.0
57.0
54.0
2.08
0.473
54.67
-1.73
-1.85
GE
63.0
58.0
58.0
2.89
0.591
59.67
0.01
-0.12
GI
53.0
57.0
57.0
2.31
0.473
55.67
-1.38
-1.50
GL
59.0
59.0
58.0
0.58
0.118
58.67
-0.34
-0.46
GQ
55.0
55.0
58.0
1.73
0.354
56.00
-1.26
-1.39
HI
69.0
67.0
72.0
2.52
0.591
69.33
3.35
3.23
tr
HJ
57.0
63.0
64.0
3.79
0.827
61.33
0.58
0.46
HK
61.0
59.0
59.0
1.15
0.236
59.67
0.01
-0.12
HL
61.0
61.0
61.0
0.00
0.000
61.00
0.47
0.35
HP
59.0
57.0
57.0
1.15
0.236
57.67
-0.69
-0.81
HX
59.0
57.0
55.0
2.00
0.473
57.00
-0.92
-1.04
I
54.0
62.0
65.0
5.69
1.570
60.33
0.24
0.12
IC
59.0
58.0
59.0
0.58
0.118
58.67
-0.34
-0.46
J
60.0
60.0
59.0
0.58
0.118
59.67
0.01
-0.12
JE
60.0
61.0
60.0
0.58
0.118
60.33
0.24
0.12
JG
62.0
57.0
60.0
2.52
0.591
59.67
0.01
-0.12
' JI
•
JS
61.0
62.0
63.0
1.00
0.236
62.00
0.81
0.69
JY
69.0
67.0
60.0
4.73
1.120
65.33
1.97
1.85
K
54.0
55.0
56.0
1.00
0.236
55.00
-1.61
-1.73
KH
67.0
59.0
67.0
4.62
0.945
64.33
1.62
1.50
KL
55.0
60.0
58.0
2.52
0.591
57.67
-0.69
-0.81
KX
56.0
61.0
58.0
2.52
0.591
58.33
-0.46
-0.58
L
65.0
64.0
63.0
1.00
0.236
64.00
1.51
1.39
LE
61.0
59.0
56.0
2.52
0.591
. 58.67
-0.34
-0.46
LF
60.0
53.0
59.0
3.79
0.827
57.33
-0.80
-0.92
LR
64.0
60.0
59.0
2.65
0.591
61.00
0.47
0.35
LT
60.0
59.0
62.0
1.53
0.354
60.33
0.24
0.12
M
59.0
59.0
55.0
2.31
0.473
57.67
-0.69
-0.81
• =
No data submitted
TAG SYMBOLS
It s Above control limit
Insufficient data
X H
Determined to be an outlier
11 = Below control limit
-------
(f ¦
6/37
f
CRD-LV Performance Evaluation
: Gamma in Water,
3-Nov-1995
^
Cobalt-60
*»
Lab
Res. 1
Res. 2
Exper.
Rng anal
. Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
MA
610
61.0
60.0
0.58
0.118
60.67
0.35
0.23
ML
'¦£-;
IftlSf' fSPi
• "* X-
MP
63.0
62.0
62.0
0.58
0.118
62.33
0.93
0.81
MQ
58.0
54.0
62.0
4.00
0.945
58.00
-0.57 ^
-0.69
MV
- A "V
lliiBII
•
MX
66.0
63.0
57.0
4 58
1.120
62.00
0.81
0.69
MY
V 4 r : ,
iiiswiplisii
•
N
62.0
67.0
65.0
2.52
0.591
64.67
1.74
1.62
NH
56.0
56.0
56.0
0.00
0.000
56.00
-1.26
-139
NJ
54.0
56.0
59.0
2.52
0.591
56.33
T115
-1.27
NK
* ' F
•„Y : ' ;
Slllllfllii
( ' '
' •„ /
NO
62.0
63.0
65.0
153
0.354
63.33
1.28
1.15
NP
mii Pill®
V
NZ
.SPlSBglfc
<>,v
•
O
64.0
64.0
63.0
0.58
0.118
63.67
1.39
1.27
OA
60.0
59.0
58.0
1.00
0.236
59.00
-0.23
-0.35
OB
470
47.0
47.0
000
0.000
47.00
-4.38
-4.50
OK
HHKM!
lliplw ¦tf-' ¦=S:/
mmmm®
Ip?5
,'K* ,
OL
72.0
73.0
65.0
4.36
0.945
70.00
3.59
3.46
ft
OM
64.0
65.0
66.0
1.00
0.236
'65.00
1.85
1.73
OZ
P
SSslPl®
'V> "'"J
• ^ .
• -
PB
50.0
49.0
50.0
0.58
0.118
49.67
-3.46
-3.58
11
PE
70.0
70.0
60.0
5.77
1.345
66.67
2.43
2.31
PI
59.0
58.0
58.0
0.58
0.118
58.33
-0.46
-0.58
PM
67.0
63.0
61.0
3.06
0.709
63.67
1.39
1.27
PQ
59.0
59.0
56.0
1.73
0.354
58.00
-0.57
-0.69
PU
67.0
60.0
68.0
4.36
0.945
65.00
1.85
1.73
PV
57.0
60.0
61.0
2.08
0.473
59.33
-0.11
-0.23
PW
58.0
59.0
57.0
1.00
0.236
58.00
-0.57
-0.69
Q
54.0
56.0
56.0
1.15
0.236
55.33
-1.50
-1.62
QJ
59.0
60.0
59.0
0.58
0.118
59.33
-0.11
-0.23
QM
..yStreA?'
QP
64.0
59.0
57.0
3.61
0.827
60.00
0.12
0.00
QT
54.0
57.0
58.0
2.08
0.473
56.33
-1.15
-1.27
QU
61.0
63.0
64.0
1.53
0.354
62.67
1.05
0.92
QW
61.0
61.0
63.0
1.15
0.236
61.67
0.70
0.58
ox
57.0
58.0
60.0
1.53
0.354
58.33
-0.46
-0.58
QZ
60.0
60.0
58.0
1.15
0.236
59.33
-0.11
-0.23
R
61.0
59.0
61.0
1.15
0.236
60.33
0.24
0.12
RF
55.0
57.0
56.0
1.00
0.236
56.00
-1.26
-1.39
RH
50.0
52.0
53.0
. 1.53
0354
51.67
_ -2.77
-2.89
RL
•
RO
59.0
63.0
59.0
2.31
0.473
60.33
0.24
0.12
RR
59.0
59.0
60.0
0.58
0.118
59.33
-0.11
-0.23
• =
No data submitted
TAG SYMBOLS
ft & Above control limit
1U =
Insufficient data
x =
Determined to he an outlier
li a Below control limit
^
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995 7/37
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RU
57.0
59.0
61.0
2.00
0.473
59.00
-0.23
-0.35
RV
55.0
60.0
60.0
2.89
0.591
58.33
-0.46
-0.58
RX
61.0
62.0
59.0
1.53
0.354
60.67
0.35
0.23
RZ
60.0
64.0
63.0
2.08
0.473
62.33
0.93
0.81
S
59.0
59.0
59.0
0.00
0.000
59.00
-0.23
-0.35
sc
54.0
56.0
53.0
1.53
0.354
54.33
-1.84
-1.96
SD
55.0
55.0
53.0
1.15
0.236
54.33
-1.84
-1.96
SF
60.0
56.0
57.0
2.08
0.473
57.67
-0.69
-0.81
SI
61.0
62.0
60.0
1.00
0.236
61.00
0.47
0.35
SM
59.0
63.0
64.0
2.65
0.591
62.00
0.81
0.69
SN
56.0
56.0
52.0
2.31
0.473
54.67
-1.73
-1.85
SR
60.0
60.0
59.0
0.58
0.118
59.67
0.01
-0.12
ss
62.0
61.0
61.0
0.58
0.118
61.33
0.58
0.46
ST
" ' *
< • '
sv
63.0
63.0
66.0
1.73
0.354
64.00
1.51
1.39
sx
62.0
59.0
62.0
1.73
0.354
61.00
0.47
0.35
sz
60.0
59.0
60.0
0.58
0.118
59.67
0.01
-0.12
T
56.0
52
58.0
3.06
0.709
55.33
-1.50
-1.62
TB
s " " , ^
s ^ /<¦
TC
50.0
56.0
53.0
3.00
0.709
53.00
-2.30
-2.42
TD
61.0
61.0
59.0
1.15
0.236
60.33
0.24
0.12
TH
59.0
60.0
60.0
0.58
0.118
59.67
0.01
-0.12
TI
60.0
58.0
59.0
1.00
0.236
59.00
-0.23
-0.35
TL
54.0
51.0
54.0
1.73
0.354
53.00
-2.30
-2.42
TO
TQ
58.0
52.0
57.0
3.21
0.709
55.67
-1.38
-1.50
TR
68.0
70.0
64.0
3.06
0.709
67:33
2.66
2.54
T9
lllllill iliiii
i**"!
U
62.0
63 X)
64.0
1.00
0.236
63.00
1.16
1.04
UE
•A (V t S t t
'• » -
UM
sitis
UN
62.0
65.0
63.0
1.53
0.354
63.33
1.28
1.15
UP
60.0
61.0
59.0
1.00
0.236
60.00
0.12
0.00
UR
84.0
89,0
830
3.21
0.709
85.33*,
8.90 -
8 J8 k*
UT
56.0
56.0
56.0
0.00
0.000
56.00
-1.26
-1.39
UW
61.0
60.0
62.0
1.00
0.236
61.00
0.47
0.35
UX
55.0
53.0
54.0
1.00
0.236
54.00
-1.96
-2.08
UY
58.0
64.0
61.0
3.00
0.709
61.00
0.47
0.35
VA
53.0
55.0
52.0
1.53
0.354
53.33
-2.19
-2.31
VC
•
VE
54.0
58.0
55.0
2.08
0.473
55.67
-1.38
-1.50
VG
•
VH
52.0
52.0
53.0
0.58
0.118
52.33
-2.53
-2.66
VI
62.0
59.0
61.0
1.53
0.354
60.67
0.35
0.23
VM
60.0
67.0
65.0
3.61
0.827
64.00
1.51
1.39
• =
0 a
No data submitted
Insufficient data
X S
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
U = Below control limit
-------
(c
8/37
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
^
Cobalt-60
T t
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Lab
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VO
57.0
65.0
67.0 5.29
1.345
63.00
1.16
1.04
VR
flfll
BPlif
SllfllSIf
. * ; r-'-x
§!ipiS|g:p
vs
65.0
61.0
63.0 2.00
0.473
63.00
1.16
1.04
VT
v^-ill;
jvi--$WS4
¦
W
61.0
58.0
60.0 1.53
0.354
59.67
0.01
-0.12
WD
60.0
59.0
59.0 0.58
0.118
59.33
¦0.11
-0.23
WF
64.0
64.0
64.0 0.00
O.OOO
64.00
1.51
139
WI
pliiliii
• ...
WJ
627.0
617.0
534.0 8.54-
2.921
526.00 161.65
161.43
X-
WK
51.0
55.0
33.0 11.72
4.046
46.33
4.61
-4.73
i
WL
440.0
440.0
440.0 0.00
0.000
440.00 131.76
131.64
- X ,
WO
91.0
91.0
97.0 3.46
< 0.709
93.00 11.66
11.43
X
X
68.0
70.0
70.0 1.15
0.236
69.33
3.35
3.23
11
Data sorted by Laboratory Averaf
:e
Average
Tap
Lab
Average
Tag
Lab
Average
Tag
Lab
46.33
WK
56.00
GQ
58.67
BN
47.00
OB
56.33
QT
59.00
TI
49.67
PB
56.33
NJ
59.00
S
51.67
RH
57.00
HX
59.00
RU
52.00
A
57.00
BC
59.00
OA
52.33
VH
57.00
AZ
59.00
EZ
53.00
TL
57.33
LF
59.00
EL
53.00
TC
57.67
SF
59.00
DD
53.00
AL
57.67
M
59.33
WD
53.33
VA
57.67
KL
59.33
RR
54.00
UX
57.67
HP
59.33
QZ
54.33
SD
57.67
DT
59.33
QJ
54.33
sc
57.67
DE
59.33
PV
54.67
SN
57.67
BO
59.67
W
54.67
FZ
58.00
PW
59.67
TH
54.67
DM
58.00
PQ
59.67
SZ
55.00
K
58.00
MQ
59.67
SR
55.00
AH
58.00
CJ
59.67
JG
55.33
T
58.00
AW
59.67
J
55.33
Q
58.00
AU
59.67
HK
55.33
EB
58.33
RV
59.67
GE
55.67
VE
58.33
QX
59.67
DZ
55.67
TQ
58.33
PI
59.67
CM
55.67
GI
58.33
KX
59.67
AK
55.67
CP
58.33
E
59.67
AJ
55.67
C
58.67
LE
59.67
AF
56.00
UT
58.67
IC
60.00
UP
56.00
RF
58.67
GL
60.00
QP
56.00
NH
58.67
CC
60.00
cx
• = No data submitted
TAG SYMBOLS
It
s Above control limit
0 = Insufficient data
^
x = Determined to be an outlier
11
= Below control limit
V
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
9/37
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
60.00
BL
61.33
FJ
63.67
PM
60.33
TD
61.33
AE
63.67
O
60.33
RO
61.67
QW
64.00
WF
60.33
R
62.00
SM
64.00
VM
60.33
LT
62.00
MX
64.00
SV
60.33
JE
62.00
JS
64.00
L
60.33
I
62.00
DL
64.33
KH
60.33
EA
62.00
CQ
64.67
N
60.33
BM
62.00
CA
65.00
PU
60.67
VI
62.00
BH
65.00
OM
60.67
RX
62.33
RZ
65.00
AY
60.67
MA
62.33
MP
65.33
JY
60.67
AP
62.67
QU
66.00
BA
60.67
AN
62.67
DO
66.67
PE
61.00
UY
62.67
DG
67.33
TR
61.00
UW
62.67
CK
68.00
EX
61.00
sx
63.00
vs
69.33
ft
X
61.00
SI
63.00
vo
69.33
IT •
HI
61.00
LR
63.00
u
69.33
ft
BG
61.00
HL
63.00
CE
70.00
ft
OL
61.00
DH
63.00
BK
72.00
ft
CS
61.00
BB
63.33
UN
85.33
X
UR
61.33
ss
63.33
NO
93.00
X
WO
61.33
HJ
63.33
FL
440.00
526.00
X
X
WL
WJ
% responding labs
Frequency distribution
104
o
-r-
-6
- it
Ill
% responding labs
101
-2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
—r"
+-6
Jil
-6
*4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x s Determined to be an outlier U = Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
10/37
Zinc-65 Statistical Summary 193 Participants
The known value of this nuclide is 125.0 pCi/1 with an expected precision of 13.0; the control limits
are 102.4 to 147.6; the warning regions are 102.4 to 110.0 and 140.0 to 147.6
34(17.6 %) Failed to respond
. 136(70.5 %) Within all limits
8(4.1 %) Outliers •' / \K.
5(2.6 %) Out of control •
>6
10(5.2 %) In warning zone
but not an outlier
^cnrr
I I
but within control
Statistic
Respondents
Non-outliers
Mean
149.68
Grand Avg 128.89
Std. Dev.
144.90
8.98
Variance
20996.19
80.58
% Coef. ofVar.
96.81
6.96
% deviation of mean from known value
19.74
3.11
Norm. dev. of mean from known value
0.17
0.43
Median
129.67
129.33
% deviation of median from known value
3.73
3.47
Norm. dev. of median from known value
0.03
0.48
13(8.2 %) More than 3 norm. S.D. •
10(6.3 %) Between 2
,90(56.6 %) Within 1 norm. S.D.
of known value
Between 1 and 2 norm. S.D.
-------
11/37
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
Zinc-65
Lnb Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
A
113.0
110.0
113.0
1.73
0.136
112.00
-2.25
-1.73
AE
126.0
128.0
133.0
3.61
0.318
129.00
0.01
0.53
AF
116.0
127.0
123.0
5.57
0.500
122.00
-0.92
-0.40
AH
129.0
135.0
130.0
3.21
0.273
131.33
0.33
0.84
Al
III
lillBilSli
AJ
136.0
129.0
134.0
3.61
0.318
133.00
0.55
1.07
AK
128.0
128.0
127.0
0.58
0.045
127.67
-0.16
0.36
AL
137.0
129.0
123.0
7.02
0.636
129.67
0.10
0.62
AN
126.0
127.0
130.0
2.08
0.182
127.67
-0.16
0.36
AP
135.0
135.0
140.0
2.89
0.227
136.67
1.04
1.55
AU
120.0
130.0
120.0
5.77
0.454
123.33
-0.74
-0.22
AW
118.0
124.0
124.0
3.46
0.273
122.00
-0.92
-0.40
AY
144.0
145.0
145.0
0.58
0.045
144.67
2.10
2.62
AZ
150.0
137.0
147.0
6.81
0.591
144.67
2.10
2.62
BA
1330.0
1360.0
1270.0
45.83
6.884
1320.00
158-70
159.22
. X '
BB
135.0
137.0
136.0
1.00
0.091
136.00
0.95
1.47
BC
131.0
123.0
127.0
4.00
0.363
127.00
-0.25
0.27
BG
136.0
146.0
119.0
13.65
1.432
133.67
0.64
1.15
BH
139.0
142.0
141.0
1.53
0.136
140.67
1.57
2.09
BI
iiiiiasi
» -
BK
146.0
146.0
148.0
1.15
0.091
146.67
2.37
2.89
BL
128.0
131.0
128.0
1.73
0.136
129.00
0.01
0.53
BM
132.0
126.0
124.0
4.16
0.363
127.33
-0.21
0.31
BN
125.0
127.0
129.0
2.00
0:182
127.00
-0.25
0.27
BO
128.0
126.0
134.0
4.16
0.363
129.33
0.06
0.58
BW
C
106.0
110.0
114.0
4.00
0.363
110.00
-2.52
-2.00
CA
127.0
129.0
126.0
1.53
0.136
127.33
-0.21
0.31
CC
130.0
131.0
131.0
0.58
0.045
130.67
0.24
0.75
CE
131.0
132.0
125.0
3.79
0.318
129.33
0.06
0.58
CG
^ ' >
-------
'
^=====^\
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995 12 / 37
Zinc-65
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
117.0
122.0
122.0
2.89
0.227
120.33
-1.14
-0.62
DO
1290
134.0
1320
252
0227
131.67
0.37
0.89
DR
DT
118.0
148.0
1310
15.04
1.692
132.33
0.46
0.98
DZ
115.0
116.0
109.0
3.79
0.318
113.33
-2.07
-1.55
E
135.0
121.0
135.0
8.08
0.636
130.33
0.19
0.71
EA
125.0
126.0
126.0
0.58
0.045
125.67
-0.43
0.09
EB
131.0
132.0
130.0
1.00
0.091
131.00
0.28
0.80
EL
128.0
126.0
127.0
1.00
0.091
127.00
-0.25
„ °-27
EW
, 'r
EX
111.0
98.0
89.0
11.06
1.000
99.33
-3.94
-3.42 U
EZ
125.0
121.0
123.0
2.00
0.182
123.00
-0.78
-0.27
FJ
139.0
140.0
1370
1.53
,0136
138.67
1.82
: FK
v",.. '¦
, \
-
FL
1400
131.0
1270
6.66
0-591
132.67
0.50
1.02
: - FU
; , - "v
u'y'
•/«*. . v t > '"-y v
a- '•'* —< a s- ¦*,< f
- * '
FZ
120.0
120.0
120.0
0.00
0.000
120.00
-1.18
-0.67
GE
122.0
134.0
134.0
6.93
0.545
130.00
0.15
0.67
GI
118.0
131.0
133.0
8.14
0.682
127.33
-0.21
0.31
GL
124.0
128.0
124.0
2.31
0.182
125.33
-0.47
0.04
GQ
118.0
117.0
119.0
1.00
0.091
118.00
-1.45
-0.93
HI
145.0
152.0
158.0
6.51
0.591
151.67
3.03
3.55 ft
HJ
124.0
129.0
131.0
3.61
0.318
128.00
-0.12
0.40
HK
133.0
126.0
131.0
3.61
0.318
130.00
0.15
0.67
HL
137.0
137.0
137.0
0.00
0.000
. 137.00
1.08
1.60
HP
125.0
130.0
133.0
4.04
0.363
129.33
0.06
0.58
HX
128.0
130.0
127.0
1.53
0.136
128.33
-0.07
0.44 '
I
124.0
137.0
126.0
7.00
0.591
129.00
0.01
0.53
IC
135.0
129.0
138.0
4.58
0.409
134.00
0.68
1.20
J
132.0
132.0
131.0
0.58
0.045
131.67
0.37
0.89
JE
134.0
131.0
130.0
2.08
0.182
131.67
0.37
0.89
JG
110.0
110.0
111.0
0.58
0.045
110.33
-2.47
-1.95
-¦Jim*
, - - -
'
^ ,
- -
' "-d'y' ^ v * '
\ v, ^ •• A' -
w f, V Vjf <
^ •-¦¦¦¦' -
JS
133.0
130^0
140.0
5.13
0.454
134.33
0.73
1.24
JY
119.0
147.0
129.0
14.19
1.518
131.67
0.37
0.89
K
117.0
117.0
120.0
1.73
0.136
118.00
-1.45
-0.93
KH
157.0
145.0
152.0
6.03
0.545
151.33
2.99
3.51 It
KL
121.0
131.0
122.0
5.51
0.454
124.67
-0.56
-0.04
KX
121.0
129.0
123.0
4.16
0.363
124.33
-0.61
-0.09
L
139.0
142.0
141.0
1.53
0.136
140.67
1.57
2.09
LE
456.0
470.0
443.0
13.63
1.432
456.00'?
43.68
44.10 ' J< •
LF
130.0
130.0
140.0
5.77
0.454
133.33
0.59
1.11
'¦¦¦'
174.0
175.0
164,0
6.08
0500
" 171.001
LT
135.0
127.0
140.0
6.56
0.591
134.00
0.68
1.20
M
138.0
135.0
126.0
6.24
0.545
133.00
0.55
1.07
• s No data submitted
TAG SYMBOLS
ft a Above control limit
0 s Insufficient data x s Determined to be an outlier U 3 Below control limit
-------
((
13/37
CRD-LV Performance Evaluation: Gamma in Water,
3-Nov-1895
^
Zinc-65
"X
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tne
MA
131.0
140.0
132.0
4.93
0.409
134.33
0.73
1.24
ML
' - ' " % A ,» 'i.
s / s ^
MP
152.0
153.0
154.0
1.00
0.091
153.00
3.21
3.73
ff
MQ
119.0
130.0
130.0
6.35
0.500
126.33
-0.34
018
MV
WSWSBSM
MX
140 0
139.0
136.0
2.08
0.182
138.33
1.26
1.78
MY
i' > i ''' ¦' / •• •
N
121.0
124.0
132.0
5.69
0.500
125.67
-0.43
0.09
NH
133.0
133.0
132.0
0.58
0.045
132.67
0.50
1.02
NJ
124.0
124.0
120.0
2.31
0.182
122.67
_ *0-83
-0.31
NK
s 'J
\ %v7A ' ' ' "
'l*V:
NO
131.0
135.0
136.0
2.65
0.227
134.00
0.68
1.20
NP
H;
fflllliipliS
v \ V-?
infill!
' -it;
NZ"''
•$ * ¦¦ ,v «v
* / / ' >
'' .. v ^
J: % * **', 'V "\
$$£¦?;;. ;
O
140.0
140.0
139.0
0.58
0.045
139.67
1.44
1.95
OA
129.0
129.0
129.0
0.00
0£00
129.00
0.01 _
0.53
OB ;
' * *# V
^ s'v " >_ / J.
' .
V-Tr V&
''
OK
p ci
OL
162.0
163.0
146.0
9.54
0.772
157.00
3.75" "
4.26
ir
OM
U®-°.
119.0
117.0
1.00
0.091
*118.00
^_-1.45_ ;
-0.93
OZ
P
"¦ ' "¦ , X* ^ *
'>*¦: i-., '
0*^'4\V"v
J % \ '
"¦> f\ '
PB
99.0
102.0
107.0
4.04
0.363
102.67
-3.49
-2.98
PE
132.0
125.0
131.0
3.79
0.318
129.33
0.06
0.58
PI
122.0
122.0
126.0
2.31
0.182
123.33
-0.74
-0.22
PM
131.0
129.0
126.0
2.52
0.227
128.67
-0.03
0.49
PQ
134.0
136.0
124.0
6.43
0.545
131.33
0.33
0.84
PU
125.0
128.0
132.0
3.51
0.318
128.33
-0.07
0.44
PV
129.0
139.0
144.0
7.64
0.682
137.33
1.12
1.64
PW
126.0
130.0
134.0
4.00
0.363
130.00
0.15
0.67
Q
124.0
128.0
132.0
4.00
0.363
128.00
-0.12
0.40
QJ
130.0
130.0
140.0
5.77
0.454
133.33
0.59
1.11
QM
> *<&> v
>> .< *v~ , f
> 1 -
'--•tC"'
QP
149.0
110.0
103.0
24.79
3.076
120.67
-1.10
-0.58
QT
122.0
128.0
118.0
5.03
0.454
122.67
-0.83
-0.31
QU
130.0
132.0
132.0
1.15
0.091
131.33
0.33
0.84
QW
126.0
131.0
135.0
4.51
0.409
130.67
0.24
0.75
QX
116.0
110.0
124.0
7.02
0.636
116.67
-1.63
-1.11
QZ
131.0
131.0
134.0
1.73
0.136
132.00
0.41
0.93
R
135.0
130.0
139.0
4.51
0.409
134.67
0.77
1.29
RF
126.0
131.0
122.0
4.51
0.409
126.33
-0.34
0.18
RH
115.0
120.0
114.0
3.21
0.273
116.33
-1.67
-1.15
. KL
• iVvV* i '-.
£/- - I * * ^s
. \> "
V ¦¦
'i~ 'vV-.' '
RO
135.0
137.0
143.0
4.16
0.363
138.33
1.26
1.78
RR
129.0
138.0
132.0
4.58
0.409
133.00
0.55
1.07
• s No data submitted
TAG SYMBOLS
3 Above control limit
0 = Insufficient data
x =
Determined to be an outlier
11 = Below control limit
0
-------
r,
CRD-LV Performance Evaluation
: Gamma in Water,
3-Nov-1995
^
14/37
Zinc-65
\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Toff
RU
130.0
130.0
129.0
0.58
0.045
129.67
0.10
0.62
RV
125.0
125.0
116.0
5.20
0.409
122.00
-0.92
-0.40
RX
130.0
112.0
121.0
9.00
0.818
121.00
-1.05
-0.53
RZ
123.0
123.0
128.0
2.89
0.227
124.67
-0.56
-0.04
S
127.0
127.0
»128.0
0.58
0.045
127.33
-0.21
0.31
sc
132.0
127.0
127.0
2.89
0.227
128.67
-0.03
0.49
SD
125.0
132.0
112.0
10.15
0.909
123.00
-0.78
-0.27
SF
128.0
145.0
134.0
8.62
0.772
135.67
0.90
1.42
SI
138.0
136.0
143.0
3.61
0.318
139.00
1.35
1.87
SM
129.0
137.0
132.0
4.04
0.363
132.67
0.50
1.02
SN
129.0
130.0
130.0
0.58
0.045
129.67
0.10
0.62
SR
133.0
131.0
129.0
2.00
0.182
131.00
0.28
0.80
ss
135.0
129.0
134.0
3.21
0.273
132.67
0.50
1.02
ST
•* ^ (>
sv
148.0
124.0
135.0
12.01
1.172
135.67
0.90
1.42
sx
136.0
134.0
135.0
1.00
0.091
135.00
0.81
1.33
sz
134.0
125.0
124.0
5.51
0.454
127.67
-0.16
0.36
T
123.0
122.0
124.0
1.00
0091
123.00
-0.78
-0.27
TB
',
Wfilillgp
' *' "&£!' v-A T
' ,•
TC
99.0
108.0
104.0
4.51
0.409
103.67
-3.36
-2.84
TD
129.0
141.0
140.0
6.66
0.545
136.67
1.04
1.55
TH
127.0
128.0
128.0
0.58
0.045
127.67
-0.16
0.36
TI
137.0
134.0
135.0
1.53
0.136
135.33
0.86
1.38
TL
95.0
121.0
120.0
14.73
1.345
11.2.00
-2.25
-1.73
TO
i , 'i
TQ
124.0
132.0
122.0
5.29
0.454
126.00
-0.38
0.13
TR
126.0
_ 126.0
120:°
3.46
0.213
124.00
_ -0.65
-0.13
TS"
% * "J*
' ^ =-V' N ' t*'
;y.
;%Y"
U
mo
130.0
133.0
1.73
0.136
J 131.00'
0.28
0.80
UE
, -
#
UM
¦¦ . ¦ ¦
s ' V * ' "¦
UN
129.0
137.0
137.0
4.62
0.363
134.33
0.73
1.24
UP
135.0
133.0
137.0
2.00
0.182
135.00
0.81
1.33
UR
35;0
34.0
38.0
2.08
0.182
35.67
•12.42
-11.90
UT
35.0
35.0
35.0
0.00
0.000
35 00
-12.51
-11.99
- X
UW
131.0
116.0
121.0
7.64
0.682
122.67
-0.83
-0.31
UX
124.0
119.0
114.0
5.00
0.454
119.00
-1.32
-0.80
UY
132.0
127.0
136.0
4.51
0.409
131.67
0.37
0.89
VA
129.0
117.0
132.0
7.94
0.682
126.00
-0.38
0.13
VC
i ;;. •_ > y*1 • ••:• -
#,
VE
139.0
131.0
136.0
4.04
0.363
135.33
0.86
1.38
VO
{ * t s
*
VH
136.0
133.0
133.0
1.73
0.136
134.00
0.68
1.20
VI
139.0
133.0
143.0
5.03
0.454
138.33
1.26
1.78
VM
115.0
115.0
125.0
5.77
0.454
118.33
-1.41
-0.89
• S
No data submitted
TAG SYMBOLS
IT = Above control limit
0 a
^
Insufficient data
X s
Determined to be an outlier
s Below control limit
: J)
-------
(
15/37
V
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
Zinc-65
Lab
Res. 1
Res. 2
Exper.
Rng anal
. Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VO
1320
128.0
142.0
7.21
0.636
134.00
0.68
120
VR
•'
vs
124.0
129.0
133.0
4.51
0.409
128.67
¦0.03
0.49
VT
. Oi-'r
W
131.0
132.0
127.0,
2.65
0.227
130.00
0.15
0.67
WD
140.0
133.0
128.0
6.03
0.545
133.67
0.64
1.15
WF
1259
125.0
125.0
o.oo
0.000
125.00
¦0.52
0.00
WI
* , T" C
' i
flippy
lipss
"I"' '
WJ 1189.0
1190.0
1195.0
3.21
0.273
1191.33 141.55
142.07
WK
104.0
126.0
112.0 11.14
1.000
114.00
1.98
-1.47
WL
928.0
1000.0
967.0 ; 36.04
5.326
966 >00 111.40
111.92
X
WO
104.0
112.0
104.0
4.62
0.363
106.67
2.96
-2.44
X
120.0
117.0
118.0
1.53
0.136
118.33
1.41
-0.89
Average
Data sorted by Laboratory Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
35.00
X
UT
122.00
AF
127.67
TH
35.67
X
UR
122.67
UW
127.67
SZ
99.33
EX
122.67
QT
127.67
AN
102.67
PB
122.67
NJ
127.67
AK
103.67
TC
123.00
T
128.00
Q
106.67
WO
123.00
SD
128.00
HJ
110.00
C
123.00
EZ
128.00
CM
110.33
JG
123.33
PI
128.33
PU
112.00
TL
123.33
AU
128.33
HX
112.00
A
124.00
TR
128.67
VS
113.33
DZ
124.33
KX
128.67
SC
114.00
WK
124.67
RZ
128.67
PM
116.33
RH
124.67
KL
129.00
OA
116.67
QX
125.00
WF
129.00
I
118.00
OM
125.33
GL
129.00
BL
118.00
K
125.67
N
129.00
AE
118.00
GQ
125.67
EA
129.33
PE
118.33
X
126.00
VA
129.33
HP
118.33
VM
126.00
TQ
129.33
CE
119.00
ux
126.33
RF
129.33
BO
119.00
DG
126.33
MQ
129.67
SN
120.00
FZ
126.67
CK
129.67
RU
120.33
DM
127.00
EL
129.67
AL
120.67
QP
127.00
BN
130.00
W
120.67
DH
127.00
BC
130.00
PW
121.00
RX
127.33
S
130.00
HK
121.67
DE
127.33
GI
130.00
GE
122.00
RV
127.33
CA
130.33
E '
122.00
AW
127.33
BM
. 130.67
QW
• = No data submitted
TAG SYMBOLS
tr
h Above control limit
0 = Insufficient data
^
x = Determined to be an outlier
u
= Below control limit
: 4
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
16/37
Zinc-65
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
130.67
CC
133.00
AJ
137.33
PV
131.00
u
133.33
QJ
138.33
VI
131.00
SR
133.33
LF
138.33
RO
131.00
EB
133.67
WD
138.33
MX
131.33
QU
133.67
BG
138.67
FJ
131.33
PQ
134.00
vo
139.00
SI
131.33
CX
134.00
VH
139.67
O
131.33
CJ
134.00
NO
140.67
L
131.33
AH
134.00
LT
140.67
CQ
131.67
UY
134.00
IC
140.67
BH
131.67
JY
134.33
UN
143.33
DL
131.67
JE
134.33
MA
144.67
AZ
131.67
J
134.33
JS
144.67
AY
131.67
DO
134.67
R
146.67
BK
131.67
DD
135.00
UP
151.33
tr
KH
132.00
QZ
135.00
SX
151.67
it
HI
132.33
DT
135.33
VE
153.00
ti-
MP
132.67
SS
135.33
TI
157.00
ff
OL
132.67
SM
135.67
SV
162.67
X
CS
132.67
NH
135.67
SF
171.00
X
LR
132.67
FL
136.00
BB
456.00
X
LE
132.67
CP
136.67
TD
965.00
X
WL
133.00
RR
136.67
AP
1191.33
X
WJ
133.00
M
137.00
HL
1320.00
X
BA
% responding labs
Frequency distribution
10-
SSL
ifdlllli
¦¦ - ¦¦
-T"
+6
% responding labs
-4 -2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
10-
-6
--j ¦¦¦
i-M'i
*¦-—¥—
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• s No data submitted TAG SYMBOLS It = Above control limit
0 = Insufficient data x = Determined to he an outlier U s Below control limit
-------
<{.0 S Ttf
# ^ **. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
i
, _ NATIONAL EXPOSURE RESEARCH LABORATORY
? P.O. BOX 93478 • LAS VEGAS, NV 89193-3478
\ /
*1 PBO',t
OFFICE OF
RESEARCH AND DEVELOPMENT
A note regarding the Cesium-134 portion of the November 3, 1995
Gamma in Water Performance Evaluation Study:
The difference between the grand average and the known value was
significant for this study. The primary peak for Cs-134 (604.7) is subject
to coincidence summing, resulting in a negative bias if quantified using
commercial mixed standards. Efficiency factors based on these standards do
not correctly quantify peaks subject to summing, and in general produce a
negative bias as was observed. This bias will be minimized if the efficiency
is calculated using a separate Cs-134 standard or a previous PE study.
Please direct any questions to Steve Pia at 702 798-2102.
Recycled/Recyclable . Printed with Vegetable Oil Based Into on 100% Recycled Paper (40% Postconsumer)
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995 17/37
—
Cesium-134 Statistical Summary 193 Participants
The known value of this nuclide is 40.0 pCi/1 wit h an expected precision of 5.0; the control limits
are 31.3 to 48.7; the warning regions are 31.3 to 34.2 and 45.8 to 48.7
34(17.6 %) Failed to respond
125(64.8 %) Within all limits
5(2.6 %) Outliers •
3( 1.6 %) Out of control
but not an outlier
26(13.5 %) In warning zone
but within control
Statistic Respondents N on-outliers
Mean
40.64
Grand Avg 36.85
Std. Dev.
28.74
3.03
Variance
826.15
9.19
%Coef. ofVar.
70.73
8.23
% deviation of mean from known value
1.59
-7.86
Norm. dev. of mean from known value
0.02
-1.04
Median
37.00
36.67
% deviation of median from known value
-7.50
-8.33
Norm. dev. of median from known value
-0.10
-1.10
61(38.4 %) Within 1 norm. S.D.
of Known value
11 (6.9 %) More than 3 norm. S.D.
64(40.3 %) Between 1 and 2 norm. S.D.
-------
/p
18/37
V
CRD-LV Performance Evaluation
: Gamma in Water,
3-Nov-1995
1
Cesium-134
T L
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Lab
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
31.0
32.0
30.0
1.00
0.236
31.00
-2.03
-3.12
li
AE
35.0
38.0
38.0
1.73
0.354
37.00
0.05
-1.04
AF
34.0
33.0
32.0
1.00
0.236
33.00
-1.34
-2.42
AH
36.0
35.0
35.0
0.58
0.118
35.33
-0.53
-1.62
AI
*
AJ
33.0
33.0
35.0
1.15
0.236
33.67
-1.10
-2.19
AK
36.0
36.0
36.0
0.00
0.000
36.00
-0.30
-1.39
AL
41.0
40.0
49.0
4.93
1.120
43.33
2.24
1.15
AN
32.0
36.0
34.0
2.00
0.473
34.00
-0.99
-2.08
AP
39.0
38.0
37.0
1.00
0.236
38.00
0.40
-0.69
AU
39.0
35.0
38.0
2.08
0.473
37.33
0.17
-0.92
AW
34.0
34.0
30.0
2.31
0.473
32.67
-1.45
-2.54
AY
37.0
36.0
36.0
0.58
0.118
36.33
-0.18
-1.27
AZ
50.0
40.0
47.0
5.13
1.345
45.67
3.05
1.96
BA
38.0
41.0
41.0
1.73
0.354
40.00
1.09
0.00
BB
40.0
38.0
39.0
1.00
0.236
39.00
0.74
-0.35
BC
35.0
33.0
34.0
1.00
0.236
34.00
-0.99
-2.08
BG
40.0
25.0
24.0
8.96
2.695
29.67
-2.49
-3.58
BH
33.0
37.0
35.0
2.00
0.473
35.00
-0.64
-1.73
BI
BK
43.0
44.0
44.0
0.58
0.118
43.67
2.36
1.27
BL
36.0
39.0
37.0
1.53
0.354
37.33
0.17
-0.92
BM
38.0
37.0
36.0
1.00
0.236
37.00
0.05
-1.04
BN
34.0
36.0
35.0
1.00
0.236
35.00
-0.64
-1.73
BO
36.0
37.0
35.0
1.00
0.236
36.00
-0.30
-1.39
BW
- -.SSg
•
C
36.0
37.0
36.0
0.58
0.118
36.33
-0.18
-1.27
CA
37.0
38.0
38.0
0.58
0.118
37.67
0.28
-0.81
CC
34.0
35.0
36.0
1.00
0.236
35.00
-0.64
-1.73
CE
38.0
37.0
39.0
L00
0.236
38.00
0.40
-0.69
GG
lllllllllll:
CJ
34.0
38.0
37.0
2.08
0.473
36.33
-0.18
-1.27
CK
33.0
33.0
33.0
0.00
0.000
33.00
-1.34
-2.42
CM
34.0
35.0 ^
33.0
1.00
0.236
34.00
-0.99
-2.08
CO
:;'1;
V-\x'¦ w ¦' "^y ¦
PSillJSIifcf
• ¦.
CP
38.0
33.0
35.0
2.52
0.591
35.33
-0.53
-1:62
CQ
35.0
39.0
42.0
3.51
0.827
38.67
0.63
-0.46
CS
42.0
43.0
42.0
0.58
0.118
42.33
1.90
0.81
CX
b
38.0
37.0
40.0
1.53
0.354
38.33
0.51
-0.58
DD
37.0
38.0
37.0
0.58
0.118
37.33
0.17
-0.92
•
DE
35.0
36.0
36.0
0.58
0.118
35.67
-0.41
-1.50
DG
34.0
36.0
33.0
1.53
0.354
34.33
-0.87
-1.96
DH
40.0
40.0
39.0
0.58
0.118
39.67
0.97
-0.12
DL
35.0
38.0
37.0
1.53
0.354
36.67
-0.07
-1.15
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 3
Insufficient data
x =
Determined to be an outlier
Jl = Below control limit
-------
' -
I CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995 19/37
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-ave) (known) Tae
DM
36.0
35.0
35.0
0.58
0.118
35.33
-0.53
-1.62
DO
350
36.0
38.0
1.53
0.354
36.33
-0.18
-1.27
DR
• - /-<<, •
DT
33.0
40.0
37.0
3.51
0.827
36.67
-0.07
-1.15
DZ
44.0
45.0
42.0
1.53
0.354
43.67
2.36
1.27
E
39.0
37.0
40.0
1.53
0.354
38.67
0.63
-0.46
EA
40.0
40.0
40.0
0.00
0.000
40.00
1.09
0.00
EB
33.0
32.0
32.0
0.58
0.118
32.33
-1.57.
-2.66
EL
37.0
36.0
36.0
0.58
0.1.18
_ 36.33
-0.18
-1.27
ew;
:- - \ -
' "¦ V'
\v ,+¦* A.
> ' J-v... •: *¦***
EX
34.0
44.0
42.0
5.29
1.345
40.00
1.09
000
EZ
40.0
37.0
37.0
1.73
0.354
38.00
0.40
-0.69
FJ
3(5.0
38.0
39.0
1.53
0.354
37.67
0.28
-0.81
PK,
PBtlillii
FL
40.0
4i.o
40.0
0.58
0.118
40.33
1.20
0.12
FU
s" • <
FZ
36.0
35.0
36.0
0.58
0.118
35.67
-0.41
-1.50
GE
36.0
36.0
35.0
0.58
0.118
35.67
-0.41
-1.50
GI
31.0
34.0
35.0
2.08
0.473
33.33
-1.22
-2.31
GL
31.0
31.0
34.0
1.73
0.354
32.00
-1.68
-2.77
GQ
38.0
38.0
37.0
0.58
0.118
37.67
0.28
-0.81
HI
44.0
44.0
42.0
1.15
0.236
43.33
2.24
1.15
HJ
41.0
33.0
36.0
4.04
0.945
36.67
-0.07
-1.15
HK
37.0
37.0
37.0
0.00
0.000
37.00
0.05
-1.04
HL
39.0
39.0
39.0
0.00
0.000
39.00
0.74
-0.35
HP
41.0
38.0
37.0
2.08 ,
0.473
38.67
0.63
-0.46
HX
36.0
34.0
34.0
1.15
0.236
34.67
-0.76
-1.85
I
35.0
37.0
37.0
1.15
0.236
36.33
-0.18
-1.27
IC
39.0
37.0
42.0
2.52
0.591
39.33
0.86
-0.23
J
38.0
37.0
37.0
0.58
0.118
37.33
0.17
-0.92
JE
36.0
36.0
35.0
0.58
0.118
35.67
-0.41
-1.50
JG
¦ ji
33.0
30.0
31.0
1.53
0.354
31.33
-1.91
-3.00
JS
38.0
38.0
38.0
0.00
0.000
38.00
0.40
-0.69
JY
47.0
42.0
39.0
4.04
0.945
42.67
2.01
0.92
K
40.0
42.0
44.0
2.00
0.473
42.00
1.78
0.69
KH
41.0
42.0
40.0
1.00
0.236
41.00
1.44
0.35
KL
36.0
36.0
38.0
1.15
0.236
36.67
-0.07
-1.15
KX
37.0
40.0
38.0
1.53
0.354
38.33
0.51
-0.58
L
39.0
40.0
40.0
0.58
0.118
39.67
0.97
-0.12
LE
40.0
38.0
35.0
2.52
0.591
37.67
0.28
-0.81
LF
37.0
37.0
33.0
2.31
0.473
35.67
-0.41
-1.50
LR
74.0
61.0
7.00
2;020
69*00
10.06 v
LT
36.0
38.0
38.0
1.15
0.236
37.33
0.17
-0.92
M
37.0
37.0
36.0
0.58
0.118
36.67
-0.07
-1.15
• =
No data submitted
TAG SYMBOLS
11 s Above control limit
[[0 3 Insufficient data x = Determined to be an outlier U s Below control limit
v —v
-------
((
20 / 37 CRD-LV Performance Evaluation
: Gamma in Water,
3-Nov-1995
Cesium-134
-
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
MA
38.0
36.0
36.0
115 .....
0.236
36.67
-0.07
-1.15
ML
«iiil!ll|i
MP
47.0
43.0
46.0
2.08
0.473
45.33
2.94
1.85
MQ
300
36.0
36.0
3.46
0.709
34.00
-0.99
-2.08
MV
HllIIPI
r >--<
MX
39;°,
41.0
410
1.15
0.236
40.33
1.20
0.12
MY
Itfpv
•
N
36.0
39.0
37.0
1.53
0.354
37.33
0.17
-0.92
NH
35.0
35.0
34.0
0.58
0.118
34.67
-0.76
-1.85
NJ
32.0
35.0
vJ3^
1.53
0.354
33.33
-1.22
-2.31
NK
IMi
WSmW^Z's ¦¦¦< 'y-^Z¥^
llllliili
I /"
¦iiiil!
-
NO
39.0
40.0
40.0
0.58
0.118
39.67
0.97
-0.12
NP
¦ffiSissWSJsSS Wf
•
NZ
0
39.0
39.0
40.0
0.58
0.118
39.33
0.86
-0.23
OA
36.0
.. P.?-.®.....
36.0
0.58
0118
35.67
^ -0.41 _
-1.5°
OB
OK
lllif|||iIpiS
-< ' , i '
' \
^
; • ^
OL
51.0
31.0
40.0
10.02
3.596
.40.67
1.32
0.23
OM
41.0
36.0
35.0
3.21
0.709
37.33
P17,
•°92
OZ
P
* •
(*'• ^
PB
39.0
40.0
42.0
1.53
0.354
40.33
1.20
0.12
PE
39.0
39.0
34.0
2.89
0.591
37.33
0.17
-0.92
PI
34.0
35.0
36.0
1.00
0.236
35.00
-0.64
-1.73
PM
36.0
34.0
37.0
1.53
0.354
35.67
-0.41
-1.50
PQ
33.0
34.0
32.0
1.00
0.236
33.00
-1.34
-2.42
PU
32.0
33.0
34.0
1.00
0.236
33.00
-1.34
-2.42
PV
34.0
33.0
34.0
0.58
0.118
33.67
-1.10
-2.19
PW
37.0
36.0
38.0
1.00
0.236
37.00
0.05
-1.04
Q
37.0
37.0
38.0
0.58
0.118
37.33
0.17
-0.92
QJ
34.0
36.0
35.0
100
0.236
35.00
-0.64
•1.13
QM
, . —V
mm
" j
; * V
QP
48.0
46.0
30.0
9.87
3.146
41.33
1.55
0.46
QT
35.0
35.0
35.0
0.00
0.000
35.00
-0.64
-1.73
QU
40.0
41.0
42.0
1.00
0.236
41.00
1.44
0.35
QW
41.0
38.0
38.0
1.73
0.354
39.00
0.74
-0.35
QX
37.0
39.0
39.0
1.15
0.236
38.33
0.51
-0.58
QZ
36.0
33.0
36.0
1.73
0.354
35.00
-0.64
-1.73
R
37.0
38.0
37.0
0.58
0.118
37.33
0.17
-0.92
RF
40.0
38.0
40.0
1.15
0.236
39.33
0.86
-0.23
RH
33.0
37.0
37.0
2.31
0.473
35.67
-0.41
-1.50
RL
5 ' ¦' -
-
RO
36.0
36.0
36.0
0.00
0.000
36.00
-0.30
-1.39
RR
37.0
36.0
38.0
1.00
0.236
37.00
0.05
-1.04
• =
No data submitted
TAG SYMBOLS
It s Above control limit
0 a
Insufficient data
x =
Determined to be an outlier
¦II = Below control limit
^
V
-------
CRD-LV Performance Evaluation: Gamma in Water,
3-Nov-1995
21/37
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tng
HU
35.0
36.0
34.0
1.00
0.236
35.00
-0.64
-1.73
RV
37.0
40.0
38.0
1.53
0.354
38.33
0.51
-0.58
RX
40.0
39.0
41.0
1.00
0.236
40.00
1.09
0.00
RZ
38.0
38.0
38.0
0.00
0.000
38.00
0.40
-0.69
S
38.0
39.0
» 39.0
0.58
0.118
38.67
0.63
-0.46
sc
35.0
31.0
31.0
2.31
0.473
32.33
-1.57
-2.66
SD
35.0
35.0
33.0
1.15
0.236
34.33
-0.87
-1.96
SF
34.0
36.0
39.0
2.52
0.591
36.33
-0.18
-1.27
SI
37.0
39.0
39.0
1.15
0.236
38.33
0.51
-0.58
SM
37.0
38.0
37.0
0.58
0.118
37.33
0.17
-0.92
SN
36.0
38.0
37.0
1.00
0.236
37.00
0.05
-1.04
SR
38.0
36.0
37.0
1.00
0.236
37.00
0.05
-1.04
ss
40.0
39.0
39.0
0.58
0.118
39.33
0.86
-0.23
ST
•
sv
36.0
35.0
31.0
2.65
0.591
34.00
-0.99
-2.08
sx
37.0
34.0
33.0
2.08
0.473
34.67
-0.76
-1.85
sz
34.0
36.0
36.0
1.15
0.236
35.33
-0.53
-1.62
T
35.0
37.0
39.0
2 00 ,
°-473
37.00
0.05
-1.04
TB
>n> *•-«..
TC
26.0
31.0
29.0
2.52
0.591
28.67
-2.84
-3.93 li
TD
36.0
36.0
35.0
0.58
0.118
35.67
-0.41
-1.50
TH
40.0
39.0
38.0
1.00
0.236
39.00
0.74
-0.35
TI
39.0
37.0
38.0
1.00
0.236
38.00
0.40
-0.69
TL
36.0
34.0
39.0
2.52
0.591
36.33
-0.18
-1.27
to
."I •• *'• •.
- : - \ - , • '
TQ
34.0
31.0
33.0
1.53
0.354
32.67
-1.45
-2.54
TR
33.0
33.0
33.0
0.00
0.000
33.00
-1.34
-2.42
TS
; ~ .-W
- , - " +
U
41.0
40.0
42.0
1.00
0.236
41.00
1.44
0.35
UE
•-
UM
•• ••• . . • ' • ¦
giSSliil
' v" ^
V 9
UN
36.0
37.0
39.0
1.53
0.354
37.33
0.17
-0.92
UP
36.0
36.0
35.0
0.58
0.118
35.67
;° 41
-1.50
UR
63.0
61.0
61.0,
> 1.15
0.236
61.67
8.60
UT
41.0
41.0
41.0
0.00
0.000
41.00
1.44
0.35
UW
41.0
42.0
40.0
1.00
0.236
41.00
1.44
0.35
ux
30.0
32.0
32.0
1.15
0.236
31.33
-1.91
-3.00
UY
34.0
36.0
36.0
1.15
0.236
35.33
-0.53
-1.62
VA
36.0
33.0
32.0
2.08
0.473
33.67
-1.10
-2.19
VC
" » -
VE
35.0
34.0
36.0
1.00
0.236
35.00
-0.64
:1.73__
VG
VH
35.0
34.0
33.0
1.00
0.236
34.00
-0.99
-2.08
VI
32.0
30.0
32.0
1.15
0.236
31.33
-1.91
-3.00
VM
44.0
48.0
40.0
4.00
0.945
44.00
2.48
1.39
• =
No data submitted
TAG SYMBOLS
IT — Above control limit
le-
Insufficient data
x =
Determined to be an outlier
11 s Below control limit
: V
-------
r, ==
22/37
\
^
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
¦ Normalized deviation
Res. 3 Sigma
(R + SR)
Average
(grand-avg) (known) Tag
vo
41.0
39.0
32.0 4.73
1.120
37.33
0.17 -0.92
VE
•
vs
35.0
38.0
37.0 1.53
0.354
36.67
¦0.07 -1.15
VT
llif!
•
W
36.0
34.0
35.0, 1.00
0.236
35.00
-0.64 -1.73
WD
38.0
38.0
36.0 1.15
0.236
37.33
0.17 -0.92
WF
34-9
34.0
34.0 0.00
0.000
34.00
-0.99 -2.08
WI
II®
Sltl&l
SB
«
WJ
326.0
326.0
" 325.0 0.58
0.118
325.67
100.05 98.96
X
WK
28.0
40.0
32.0 6.11
1.795
33.33
-1.22 -2.31
WL -
274.0
220.0
248.0 27.01
11.246
247.33
:4 72.91 , 71.82
'Sv
X
WO
81.0
81.0
- 84.0 1.73
0.354
82.00
15.64 14.65
rx
X
34.0
35.0
36.0 1.00
0.236
35.00
-0.64 -1.73
Data sorted by Laboratory Averaj
f©
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
28.67
Ji
TC
34.33
SD
35.67
FZ
29.67
U
BG
34.33
DG
35.67
DE
31.00
4
A
34.67
SX
36.00
RO
31.33
VI
34.67
NH
36.00
BO
31.33
UX
34.67
HX
36.00
AK
31.33
JG
35.00
X
36.33
TL
32.00
GL
35.00
w
36.33
SF
32.33
SC
35.00
VE
36.33
I
32.33
EB
35.00
RU
36.33
EL
32.67
TQ
35.00
QZ
36.33
DO
32.67
AW
35.00
QT
36.33
CJ
33.00
TR
35.00
QJ
36.33
C
33.00
PU
35.00
PI
36.33
AY
33.00
PQ
35.00
CC
36.67
VS
33.00
CK
35.00
BN
36.67
MA
33.00
AF
35.00
BH
36.67
M
33.33
WK
35.33
UY
36.67
KL
33.33
NJ
35.33
sz
36.67
HJ
33.33
GI
35.33
DM
36.67
DT
33.67
VA
35.33
CP
36.67
DL
33.67
PV
35.33
AH
37.00
T
33.67
AJ
35.67
UP
37.00
SR
34.00
WF
35.67
TD
37.00
SN
34.00
VH
35.67
RH
37.00
RR
34.00
sv
35.67
PM
37.00
PW
34.00
MQ
35.67
OA
37.00
HK
34.00
CM
35.67
LF
37.00
BM
34.00
BC
35.67
JE
37.00
AE
34.00
AN
35.67
GE
37.33
WD
• s No data submitted
TAG SYMBOLS
ft s Above control limit
0 s Insufficient data
x = Determined to be an outlier
11 = Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
Cesium-134
Data sorted by Laboratory Average
23/37
Average
Tae
Lab
Average
Tag Lab
Average
Tae
Lab
37.33
VO
38.33
RV
40.33
MX
37.33
UN
38.33
ox
40.33
FL
37.33
SM
38.33
KX
40.67
OL
37.33
R
38.33
CX
41.00
UW
37.33
Q
38.67
s
41.00
UT
37.33
PE
38.67
HP
41.00
U
37.33
OM
38.67
E
41.00
QU
37.33
N
38.67
CQ
41.00
KH
37.33
LT
39.00
TH
41.33
QP
37.33
J
39.00
QW
42.00
K
37.33
DD
39.00
HL
42.33
CS
37.33
BL
39.00
BB
42.67
JY
37.33
AU
39.33
SS
43.33
HI
37.67
LE
39.33
RF
43.33
AL
37.67
GQ
39.33
O
43.67
DZ
37.67
FJ
39.33
ic
43.67
BK
37.67
CA
39.67
NO
44.00
VM
38.00
n
39.67
L
46.33
MP
38.00
RZ
39.67
DH
45.67
AZ
38.00
JS
40.00
RX
61.67
X
UR
38.00
EZ
40.00
EX
69.00
X
LR
38.00
CE
40.00
EA
82.00
X
WO
38.00
AP
40.00
BA
247.33
X
WL
38.33
SI
40.33
PB
325.67
X
WJ
% responding labs
Frequency distribution
104
o
-I—
-6
¦ ¦.-¦MIMIbIII;.
responding labs
-4 -'2 0 +2 +4
Normalized deviation of the mean from the known value .
Frequency distribution
10-
-2 0 +2 +4
Normalized deviation of the mean from the grand average
• s No data submitted TA^f SYMBOLS It 3 Above control limit
0 h Insufficient data x = Determined to be an outlier -II a Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
24/37
Ceaium-137 Statistical Summary 193 Participants
The known value of this nuclide is 49.0 pCi/1 with an expected precision of 5.0; the control limits
are 40.3 to 57.7; the warning regions are 40.3 to 43.2 and 54.8 to 57.7
33(17.1 %) Failed to respond
9(4.7 %) Outliers'
5(2.6 %) Out of control •
but not an outlier
Statistic
• 136(70.5 %) Within all limits
Respondents
10(5.2 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm dev. of median from known value
66.29
140.10
19627.35
211.33
35.29
0.12
50.67
3.40
0.01
Grand Avg 50.81
3.13
9.82
6.17
3.69
0.58
50.67
3.40
0.53
14(8.8 %) More than 3 norm. S.D.
10(6.3 %) Between 2 and 3 norm. S.D.'
" * >' <¦'>' b f <*} •
'* -m >ssyy' v>
* ' , , • V >
• 96(60.0 %) Within 1 norm. S.D.
of known value
40(25.0 %) B©tw«w>n 1 and 2 norm. S.D.
-------
25 / 37 CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tog
A
43.0
44.0
43.0
0.58
0.118
43.33
-2.59
-1.96
AE
49.0
50.0
53.0
2.08
0.473
50.67
-0.05
0.58
AF
51.0
49.0
52.0
1.53
0.354
50.67
-0.05
0.58
AH
52.0
53.0
52.0
0.58
0.118
52.33
0.53
115
AI
'
• -
AJ
50.0
50.0
50.0
0.00
0.000
50.00
-0.28
0.35
AK
50.0
50.0
50.0
0.00
0.000
50.00
-0.28
0.35
AL
51.0
50.0
40.0
6.08
1.570
47.00
-1.32
-0.69
AN
50.0
49.0
50.0
0.58
0.118
49.67
-0.39
0.23
AP
52.0
51.0
52.0
0.58
0.118
51.67
0.30
0.92
AU
48.0
48.0
50.0
1.15
0.236,
48.67
-0.74
-0.12
AW
51.0
49.0
49.0
1.15
0.236
49.67
-0.39
0.23
AY
57.0
57.0
58.0
0.58
0.118
57.33
2.26
2.89
AZ
52.0
46.0
44.0
4.16
0.945
47.33
-1.20
-0.58
BA
49.0
48.0
44.0
2.65
0.591
47.00
-1.32
-0.69
BB
50.0
50.0
50.0
0.00
0.000
50.00
-0.28
0.35
BC
52.0
52.0
51.0
0.58
0.118
51.67
0.30
0.92
BG
67.0
48.0
52.0
10.02
3.371
55.67
1.68
231
BH
53.0
53.0
53.0
0.00
0.000
53.00
0.76
1.39
B1
~ " •
BK
64.0
65.0 ;
64.0
0.58
0.118
64.33
4.69
5.31 x
BL
50.0
51.0
49.0
1.00
0.236
50.00
-0.28
0.35
BM
52.0
50.0
52.0
1.15
0.236
51.33
0.18
0.81
BN
52.0
51.0
51.0
0.58
0.118
51.33
0.18
0.81
BO
48.0
51.0
51.0
1.73
0.354
50.00
-0.28
0.35
BW
Wlliiii
i|llllll§t|t
iSgiltlffli!
C
44.0
46.0
47.0
1.53
0.354
45.67
-1.78
-1.15
CA
54.0
50.0
51.0
2.08
0.473
51.67
0.30
0.92
CC
49.0
48.0
48.0
0.58
0.118
48.33
-0.86
-0.23
CE
55.0
53.0
55.0
1.15
0.236
54.33
1.22
1.85
CG
V'v :*v:
CJ
45.0
53.0
53.0
4.62
0.945
50.33
-0.16
0.46
CK
48.0
53.0
44.0
4.51
1.120
48.33
-0.86
-0.23
CM
50.0
52.0
51.0
100
0.236
51.00
0.07
0.69
CO
• ~'y- '\
V - P,?1
•
CP
56.0
51.0
47.0
4.51
1.120
51.33
0.18
0.81
CQ
53.0
54.0
51.0
1.53
0.354
52.67
0.64
1.27
CS
62.0
¦ 61.0
63.0
1.00
0.236
62.00
3.88
4.50 X
CX
ri
51.0
52.0
53.0
1.00
0.236
52.00
0.41
1.04
* A * *
a
u
DD
53.0
52.0
54.0
1.00
0.236
53.00
0.76
j >y w >
1.39
DE
50.0
50.0
50.0
0.00
0.000
50.00
-0.28
0.35
DG
56.0
58.0
60.0
2.00
0.473
58.00
2.49
3.12 It
DH
50.0
50.0
50.0
0.00
0.000
50.00
-0.28
0.35
DL
54.0
42.0
48.0
6.00
1.795
48.00
-0.97
-0.35
• =
No data submitted
TAG SYMBOLS
ft == Above control limit
0 = Insufficient data x = Determined to be an outlier 11 = Below control limit J
y- ¦ •if
-------
(r
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995 26/37
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rag anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tae
DM
45.0
46.0
48.0
1.53
0.354
46.33
-1.55
-0.92
DO
490
55.0
58.0
4.58
1.120
54.00
1.11
1.73
DR
'v:*'
• \ v. : _
- * <* M
* - >
, *?*"* < r M
- < <¦
DT
49.0
48.0
53.0
2.65
0.591
50.00
-0.28
0.35
DZ
54.0
54.0
49.0
2.89
0.591
52.33
0.53
1.15
E
57.0
51.0
55.0
3.06
0.709
54.33
1.22
1.85
EA
51.0
50.0
51.0
0.58
0.118
50.67
-0.05
0.58
EB
50.0
49.0
48.0
1.00
0.236
49.00
-0.63
0.00
EL
50.0
50.0
52.0
1.15
0.236
50.67
-0.05
0.58
EW
> « M V v <- f
• <
EX
52.0
54.0
51.0
1.53
0.354
52.33
0.53
1.15
EZ
42.0
51.0
50.0
4.93
1.120
47.67
-1.09
-0.46
FJ
51.0
51.0
49.0
1.15
0.236
50.33
-0.16
0.46
FK
•
FL
54.0
53.0
51.0
1.53
0.354
52.67
0.64
1.27
FU
2 f , V s.
>> r- I ~ Sr*
FZ
45.0
49.0
50.0
2.65
0.591
48.00
-0.97
-0.35
GE
55.0
51.0
48.0
3.51
0.827
51.33
0.18
0.81
GI
44.0
49.0
48.0
2.65
0.591
47.00
-1.32
-0.69
GL
47.0
50.0
50.0
1.73
0.354
49.00
-0.63
0.00
GQ
52.0
52.0
51.0
0.58
0.118
51.67
0.30
0.92
HI
56.0
59.0
57.0
1.53
0.354
57.33
2.26
2.89
HJ
54.0
49.0
48.0
3.21
0.709
50.33
-0.16
0.46
HK
52.0
54.0
51.0
1.53
0.354
52.33
0.53
1.15
HL
55.0
55.0
55.0
0.00
0.000
55.00
1.45
2.08
HP
52.0
53.0
53.0
0.58.
0.118
52.67
0.64
1.27
HX
50.0
50.0
49.0
0.58
0.118
49.67
-0.39
0.23
I
51.0
48.0
43.0
4.04
0.945
47.33
-1.20
-0.58
IC
52.0
51.0
52.0
0.58
0.118
51.67
0.30
0.92
J
50.0
50.0
49.0
0.58
0.118
49.67
-0.39
0.23
JE
53.0
53.0
51.0
1.15
0.236
52.33
0.53
1.15
JG
51.0
55.0
56.0
2.65
0591
54.00
1.11
1.73
Jt
v/-V
*-
* ':.V\
iSISill
iiflliliSIS
' ."f ^ ?•> N*
JS
54.0
50.0
54.0
2.31
0.473
52.67
0.64
1.27
JY
51.0
58.0
52.0
3.79
0.827
53.67
0.99
1.62
K
53.0
51.0
53.0
1.15
0.236
52.33
0.53
1.15
KH
59.0
62.0
58.0
2.08
0.473
59.67
3.07
3.70 tr
KL
51.0
49.0
50.0
1.00
0.236
50.00
-0.28
0.35
KX
49.0
52.0
48.0
2.08
0.473
49.67
-0.39
0.23
L
54.0
57.0
58.0
2.08
0.473
56.33
1.91
2.54
LE
57.0
55.0
54.0
1.53
0.354
55.33
1.57
2.19
LF
48.0
51.0
49.0
1.53
0.354
49.33
-0.51
0.12
LR
52.0
50.0
50.0
1.15
0.236
50.67
-0.05
0.58
LT
52.0
52.0
54.0
1.15
0.236
52.67
0.64
1.27
M
51.0
49.0
46.0
2.52
0.591
48.67
-0.74
-0.12
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
hi
S
Insufficient data
X S
Determined to be an outlier
U s Below control limit
-------
(r
27/37
CRD-LV Performance Evaluation
: Gamma in Water,
3-Nov-1995
Cesium-137
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
MA
52.0
54.0
52.0
1.15
0.236
52.67
0.64
1.27
ML
:v;¦ ,, • •:
: • -
MP
52.0
55.0
53.0
1.53
0.354
53.33
0.88
1.50
MQ
50.0
51.0
53.0
1.53
0.354
51.33
0.18
0.81
MV
• > •
IllllISi
. ' .
MX
52.0
55.0
54.0
1.53
0.354
53.67
0.99
1.62
MY
mmmmm
. V AA-.
<
N
54.0
48.0
51.0
3.00
0.709
51.00
0.07
0.69
NH
51.0
51.0
50.0
0.58
0.118
50.67
-0.05
0.58
NJ
49.0
48.0
49.0
0.58
0.118
48.67
-0.74
-0.12
NK
V:
¦v; /¦', ; .
A
NO
51.0
52.0
54.0
1.53
0.354
52.33
0.53
1.15
NP
c , ' >
f ^
NZ
< " "
Sllllftfi
•
0
56.0
56.0
55.0
0.58
0.118
55.67
1.68
2.31
OA
49.0
48.0
46.0
1.53
0.354
47.67
-1.09
-0.46
OB
54.0
55.0
55.0
0.58
0118
54.67
___1.34_ _
1.96
6k
' ^
OL
49.0
55.0
51.0
3.06
0.709
. 51.67
0.30
0.92
OM
51.0
49.0
510
1.15
0.236
50.33
-0.16
0.46
OZ
'Biillfill
shirr
iiiiiiaiiliili
\ •fV
P
k,' 4 ¦
- V' >' v **
'•J>v
PB
45.0
45.0
45.0
0.00
0.000
45.00
-2.01
-1.39
PE
54.0
57.0
57.0
1.73
0.354
56.00
1.80
2.42
PI
51.0
50.0
50.0
0.58
0.118
50.33
-0.16
0.46
PM
50.0
55.0
52.0
2.52
0.591
52.33
0.53
1.15
PQ
49.0
51.0
48.0
1.53
0.354
49.33
-0.51
0.12
PU
56.0
57.0
57.0
0.58
0.118
56.67
2.03
2.66
PV
45.0
50.0
47.0
2.52
0.591
47.33
-1.20
-0.58
PW
51.0
51.0
49.0
1.15
0.236
50.33
-0.16
0.46
Q
47.0
47.0
48.0
0.58
0.118
47.33
-1.20
-0.58
QJ
50.0
51.0
54.0
2.08
0.473
51.67
0.30
092
QM
;pp|pplg|i|
iliiliil
m}\ J
QP
59.0
50.0
46.0
6.66
2.020
51.67
0^30
0.92
QT
49.0
48.0
44.0
2.65
0.591
47.00
-1.32
-0.69
QU
52.0
52.0
53.0
0.58
0.118
52.33
0.53
1.15
QW
54.0
51.0
50.0
2.08
0.473
51.67
0.30
0.92
QX
59.0
62.0
62.0
1.73
0.354
61.00
3.53
4.16
it
QZ
51.0
49.0
52.0
1.53
0.354
50.67
-0.05
0.58
R
53.0
56.0
53.0
1.73
0.354
54.00
1.11
1.73
RF
45.0
47.0
45.0
1.15
0.236
45.67
-1.78
-1.15
RH
46.0
48.0
47.0
1.00
0.236
47.00
-1.32
-0.69
RL
¦ ""I V. ¦.yrr*
RO
51.0
49.0
53.0
2.00
0.473
51.00
0.07
0.69
RR
47.0
46.0
49.0
1.53
0.354
47.33
-1.20
-0.58
• =5
No data submitted
TAG SYMBOLS
' H s Above control limit
III
5)
—')
Insufficient data
X S
Determined to be an out lier
II- = Below control limit
yj
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995 28/37
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RU
48.0
49.0
48.0
0.58
0.118
48.33
-0.86
-0.23
RV
50.0
46.0
55.0
4.51
1.120
50.33
-0.16
0.46
RX
52.0
530
50.0
1.53
0.354
51.67
0.30
0.92
RZ
49.0
50.0
50.0
0.58
0.118
49.67
-0.39
0.23
S
50.0
47.0
49.0
1.53
0.354
48.67
-0.74
-0.12
SC
44.0
47.0
50.0
3.00
0.709
47.00
-1.32
-0.69
SD
53.0
53.0
49.0
2.31
0.473
51.67
0.30
0.92
SF
53.0
53.0
50.0
1.73
0.354
52.00
0.41
1.04
SI
52.0
50.0
49.0
1.53
0.354
50.33
-0.16
0.46
SM
50.0
55.0
54.0
2.65
0.591
53.00
0.76
1.39
SN
50.0
51.0
51.0
0.58
0.118
'50.67
-0.05
0.58
SR
50.0
50.0
49.0
0.58
0.118
49.67
-0.39
0.23
SS
53.0
54.0
54.0
0.58
0.118
53.67
0.99
1.62
ST \
\ *'
' , ^ ' *• v*
<'{v
•V t > t ?A* f v
SV
47.0
46.0
52.0
3.21
0.709
48.33
-0.86
-0.23
sx
45.0
44.0
44.0
0.58
0.118
44.33
-2.24
-1.62
sz
51.0
52.0
52.0
0.58
0.118
51.67
0.30
0.92
T
49.0
50.0
48.0
100
0.236
49.00
;°-63
0.00
TB
*
miSSii
v *^1 svy*
" j, ^
TC
53.0
46.0
50.0
3.51
0.827
49.67
-0.39
0^23
TD
45.0
52.0
51.0
3.79
0.827
. 49.33
-0.51
0.12
TH
50.0
51.0
51.0
0.58
0.118
50.67
-0.05
0.58
TI
64.0
52.0
58.0
6.00
1.795
58.00
2.49
3.12 1t
TL
44.0
49.0
53.0
4.51
1.120
,48.67
-0.74
-0.12
TO
- '
fji 5Jill ^ x i: i "Ct
* ,, X w
TQ
45.0
50.0
46.0
2.65
0.591
47.00
-1.32
-0.69
TR
460
43.0
44.0
1.53
0.354
44'33.
-2.24
-1.62
TS
- * ~ ^
% <
U
53.0
53.0
53.0
0.00
o.ooo
53.00
0.76
1.39
UB
V - {-^ -.*• ( ~ ^ v sfrs v
"rr- •/.- rn^n-x •
UM
\ " <
> <*•?
. •
UN
53.0
55.0
56.0
1.53
0.354
54.67
1.34
1.96
UP
50.0
50.0
50.0
0.00
0.000
50.00
-0.28
0.35
UR
117.0
124.0
121.0
„ 3.51
0.827
120.67
2*20 '
UT
1.0 :
1.0
1.0
0.00
0,000
1.00
-17;25
:-16.63y'x
UW
49.0
47.0
46.0
1.53
0.354
47.33
-1.20
-0.58
UX
46.0
46.0
47.0
0.58
0.118
46.33
-1.55
-0.92
UY
49.0
50.0
53.0
2.08
0.473
50.67
-0.05
0.58
VA
48.0
45.0
440
2.08
0473
45.67
-1.78
-1.15
VC
; ' 'iii'V.; I. !
, • •• i
VE
38.0
45.0
42.0
3.51
0.827
41.67
-3.17
-2.54
VG
. .......
~7*T
VH
48.0
45.0
52.0
3.51
0.827
48.33
-0.86
-0.23
VI
54.0
51.0
48.0
3.00
0.709
51.00
0.07
0.69
VM
51.0
52.0
50.0
1.00
0.236
51.00
0.07
0.69
• s No data submitted TAG SYMBOLS ft a Above control limit
0 s Insufficient data x a Determined to be an outlier II a Below control limit
^ 'J
-------
»—:—:—
29/37
^
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
VO
52.0
53.0
53.0
0.58
0118
52.67
0.64
1.27
VR
! £-w£y;'>;:
• • * * - " ' ' *i * •
lllill
^ ' A * 'V V \ ^
vs
480
53.0
49.0
2.65
0.591
50.00
¦0.28
0.35
VT
mmm
' ¦
W
53.0
50.0
52.0
1.53
0.354
51.67
0.30
0.92
WD
49.0
48.0
50.0
1.00
0.236
49.00
¦0.63
0.00
WF
90.0
90.0
90.0
7 ' 0.00
0.000
! 90.00 >¦ 13.58
14.20 x;;
Wl
V-
WJ
440.0-
v 432.0
439.0
: . ; 4.36
, 0.946
437:00 133.78
; 134.41 *, 7*'
WK 1743,0
* ;i75fc.O
1793.0
26.66
10.346
^ 1762.67 593.01
693.63 X
WL
334.0
286.0
• 312.0
24.03
- 9.896
310.67 90.02
90.64 x
WO
91.0
77.0
i 93 0
:t: 8i72
2.696
87.0a ^ 12^4
13.16 x
X
59.0
56.0
59.0
1.73
0.354
58.00
2.49
3.12 ft"
Average
Data sorted by Laboratory Average
Tag
Lab
Average
Tag
Lab
Average
Tag Lab
1.00
X
UT
48.33
SV
50.00
DE
41.67
VE
48.33
RU
50.00
BO
43.33
A
48.33
CK
50.00
BL
44.33
TR
48.33
CC
50.00
BB
44.33
SX
48.67
TL
50.00
AK
45.00
PB
48.67
S
50.00
AJ
45.67
VA
48.67
NJ
50.33
SI
45.67
RF
48.67
M
50.33
RV
45.67
C
48.67
AU
50.33
PW
46.33
UX
49.00
WD
50.33
PI
46.33
DM
49.00
T
50.33
OM
47.00
TQ
49.00
GL
50.33
HJ
47.00
SC
49.00
EB
50.33
FJ
47.00
RH
49.33
TD
50.33
CJ
47.00
QT
49.33
PQ
50.67
UY
47.00
GI
49.33
LF
50.67
TH
47.00
BA
49.67
TC
50.67
SN
47.00
AL
49.67
SR
50.67
QZ
47.33
UW
49.67
RZ
50.67
NH
47.33
RR
49.67
KX
50.67
LR
47.33
Q
.
49.67
J
50.67
EL
47.33
PV
49.67
HX
50.67
EA
47.33
I
49.67
AW
50.67
AF
47.33
AZ
49.67
AN
50.67
AE
47.67
OA
50.00
VS
51.00
VM
47.67
EZ
50.00
UP
51.00
VI
48.00
FZ
50.00
KL
51.00
RO
48.00
DL
50.00
DT
51.00
N
48.33
VH
50.00
DH
51.00
CM
• = No data submitted
TAG SYMBOLS
ft
3 Above control limit
1 0 = Insufficient data
x s Determined to be an outlier
= Below control limit
V
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
30/37
Cesium-137
Data sorted
Average
Taa
Lab
Average
Tag Lab
Average
Tag
Lab
51.33
MQ
52.33
JUS
54.33
CE
51.33
GE
52.33
HK
54.67
UN
51.33
CP
52.33
EX
54.67
OB
51.33
BN
52.33
DZ
55.00
HL
51.33
BM
52.33
AH
55.33
LE
51.67
W
52.67
VO
55.67
O
51.67
SZ
52.67
MA
55.67
BG
51.67
SD
52.67
LT
56.00
PE
51.67
RX
52.67
JS
56.33
L
51.67
QW
52.67
HP
56.67
PU
51.67
QP
52.67
FL
57.33
HI
51.67
QJ
52.67
CQ
57.33
AY
51.67
OL
53.00
U
58.00
X
51.67
--
IC
53.00
SM
58.00
ft
ti
51.67
GQ
53.00
DD
58.00
IT .
DG
51.67
CA
53.00
BH
59.67
It
KH
51.67
BC
53.33
MP
61.00
It
QX
51.67
AP
53.67
SS
62.00
x
CS
52.00
SF
53.67
MX
64.33
X
BK
52.00
CX
53.67
JY
87.00
X
WO
52.33
QU
54.00
R
90.00
X
WF
52.33
PM
54.00
JG
120.67
X
UR
52.33
NO
54.00
DO
310.67
X
WL
52.33
K
54.33
E
437.00
1762.67
X
X
WJ
WK
% responding labs
Frequency distribution
10-
responding labs
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
-4 -2 0+2+4
Normalized deviation of the mean from the grand average
• a No data submitted
0 3 Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
Jl s Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
31/37
Barium* 133 Statistical Summary 193 Participants
The known value of this nuclide is 99.0 pCi/1 with an expected precision of 10.0; the control limits
are 81.7 to 116.3; the warning regions are 81.7 to 87.4 and 110.6 to 116.3
36(18.7 %) Failed to respond »„
, 135(69.9 %) Within all limits
/•:
// *—
4(2.1 %) Outliers*' / \K
2(1.0 %) Out of control *
16(8.3 %) In warning zone
but not an outlier
but within control
Statistic
Respondents
Non-outliers
Mean
103.69
Grand Avg 95.64
Std. Dev.
78.47
6.59
Variance
6157.64
43.47
% Coef. of Var.
75.68
6.89
% deviation of mean from known value
4.74
-3.40
Norm. dev. of mean from known value
0.06
-0.51
Median
96.00
96.00
% deviation of median from known value
-3.03
-3.03
Norm. dev. of median from known value
-0.04
-0.46
6(3.8 %) More than 3 norm. S.D. •».
16(10.2 %) Between 2 and 3 norm. S.D
89(56.7 %) Within 1 norm. S.D.
of known value
% 46(29.3 %) Between 1 and 2 norm. S.D.
-------
32/37
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
A
89.0
85.0
76.0
6.66
0.768
83.33
-2.13 -2.71
AE
96.0
99.0
101.0
2.52
0.295
98.67
0.52 -0.06
AF
93.0
97.0
93.0
2.31
0.236
94.33
-0.23 -0.81
AH
99.0
98.0
100.0
1.00
0.118
99.00
0.58 0.00
A1
¦ ¦
AJ
96.0
99.0
96.0
1.73
0.177
97.00
0.24 -0.35
AK
90.0
92.0
89.0
1.53
0.177
90.33
-0.92 -1.50
AL
97.0
108.0
99.0
5.86
0.650
101.33
0.99 0.40
AN
92.0
106.0
92.0
8.08
0.827
96.67
0.18 -0.40
AP
94.0
90.0
91.0
2.08
0.236
91.67
-0.69 -1.27
AU
92.0
98.0
99.0
3.79
0.413
96.33
0.12 -0.46
AW
90.0
90.0
86.0
2.31
0.236
88.67
-1.21 -1.79
AY
103.0
102.0
104.0
1.00
0.118
103.00
1.28 0.69
AZ
113.0
101.0
95.0
9.17
1.120
103.00
1.28 0.69
BA
106.0
100.0
103.0
3.00
0.354
103.00
1.28 0.69
BB
86.0
94.0
90.0
4.00
0.473
90.00
-0.98 -1.56
BC
85.0
86.0
86.0
0.58
0.059
85.67
-1.73 -2.31
BG
97.0
96.0
84.0
7.23
0.768
92.33
-0.57 -1.15
BH
92.0
92.0
93.0
0.58
0.059
. 92.33
-0.57 -1.15 ^-r
BI
ipidii
BK
111.0
112.0
112.0
0.58
0.059
111.67
2.78 2.19
BL
99.0
100.0
100.0
0.58
0.059
99.67
0.70 0.12
BM
99.0
99.0
99.0
0.00
0.000
99.00
0.58 0.00
BN
89.0
89.0
92.0
1.73
0.177
90.00
-0.98 -1.56
BO
93.0
96.0
95.0
153
0177
94.67
-0.17 -0.75
BW
:V;
C
95.0
91.0
91.0
2.31
0.236
92.33
-0.57 -1.15
CA
103.0
97.0
98.0
3.21
0.354
99.33
0.64 0.06
CC
89.0
88.0
87.0
1.00
0.118
88.00
-1.32 -1.91
CE
1040
102.0
93.0
5.86
0.650
99.67
0.70 0.12
CG
CJ
94.0
92.0
88.0
3.06
0.354
91.33
-0.75 -1.33
CK
86.0
86.0
88.0
1.15
0.118
86.67
-1.55 -2.14
CM
101.0
101.0
96.0
2.89
0.295
99.33
0.64 0.06
CO
llSi|R
CP
95.0
107.0
98.0
6.24
0.709
100.00
0.76 0.17
CQ
101.0
97.0
100.0
2.08
0.236
99.33
0.64 0.06
CS
105.0
106.0
105.0
0.58
0.059
105.33
1.68 1.10
CX
86.0
87.0
90.0
2.08
0.236
y - t
87.67
-1.38 -1.96
DD
102.0
102.0
102.0
0.00
0.000
102.00
1.10 0.52
DE
91.0
92.0
92.0
0.58
0.059
91.67
-0.69 -1.27
DG
92.0
95.0
90.0
2.52
0.295
92.33
-0.57 -1.15
DH
94.0
95.0
95.0
0.58
0.059
94.67
-0.17 -0.75
DL
105.0
100.0
105.0
2.89
0.295
103.33
1.33 0.75
• =
0 a
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
U s Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
33/37
Barium-133
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
(R + SR)
Normalized deviation
DM
86.0
86.0
89.0
1.73
0.177
87.00
-1.50
-2.08
DO
99.0
99.0
111.0
6.93
0.709
103.00
1.28
0.69
DR
-_
'v
' '' ' /
DT
89.0
91.0
102.0
7.00
0.768
94.00
-0.28
-0.87
DZ
101.0
102.0
99.0
1.53
0.177
100.67
0.87
0.29
E
95.0
94.0
94.0
0.58
0.059
94.33
-0.23
-0.81
EA
98.0
98.0
98.0
0.00
0.000
98.00
0.41
-0.17
EB
84.0
85.0
87.0
1.53
0.177
85.33
-1.78
-2.37
EL
94.0
94.0
95.0
0.58
0.059
94.33
-0.23
-0.81
EX
EZ
FJ
*FK*
FL
97.0
111.0
97.0
109.0
101.0
105.0
lOO.O
115.0
100.0
109.0
101.0
99.0
2.08
3.06
2.08
8.08
0.236
0.354
0.236
0.945
99.33
108.33
99.33
107.67
0.64
2.20
0.64
2.08
0.06
1.62
o.oe
1.50
FZ
95.0
96.0
91.0
2.65
0.295
94.00
-0.28
-0.87
GE
97.0
92.0
97.0
2.89
0.295
95.33
-0.05
-0.64
GI
85.0
94.0
95.0
5.51
0.591
91.33
-0.75
-1.33
GL
94.0
87.0
92.0
3.61
0.413
91.00
-0.80
-1.39
GQ
96.0
96.0
96.0
0.00
0.000
96.00
0.06
-0.52
HI
100.0
112.0
116.0
8.33
0.945
109.33
2.37
1.79
HJ
99.0
97.0
94.0
2.52
0.295
96.67
0.18
-0.40
HK
92.0
91.0
90.0
1.00
0.118
91.00
-0.80
-1.39
HL
100.0
100.0
100.0
0.00
0.000
100.00
0.76
0.17
HP
101.0
94.0
94.0
4.04
0.413
96.33
0.12
-0.46
HX
96.0
92.0
93.0
2.08
0.236
93.67
-0.34
-0.92
I
85.0
95.0
86.0
5.51
0.591
88.67
-1.21
-1.79
IC
96.0
106.0
99.0
5.13
0.591
100.33
0.81
0.23
J
105.0
101.0
102.0
2.08
0.236
102.67
1.22
0.64
JE
94.0
95.0
95.0
0.58
0.059
94.67
-0.17
-0.75
JG
78.0
79.0
82.0
2.08
0.236
79.67
-2.77
-3.35
JI
, °
V&.i
f;T7 t
JS
98.0
97.0
97.0
0.58
0.059
97.33
0.29
-0.29
JY
97.0
101.0
98.0
2.08
0.236
98.67
0.52
-0.06
K
92.0
94.0
95.0
1.53
0.177
93.67
-0.34
-0.92
KH
106.0
104.0
104.0
1.15
0.118
104.67
1.56
0.98
KL
100.0
100.0
99.0
0.58
0.059
99.67
0.70
0.12
KX
100.0
107.0
102.0
3.61
0.413
103.00
1.28
0.69
L
106.0
104.0
102.0
2.00
0.236
104.00
1.45
0.87
LE
93.0
101.0
97.0
4.00
0.473
97.00
0.24
-0.35
LF
93.0
95.0
96.0
1.53
0.177
94.67
-0.17
-0.75
LR
116.0
112.0
.109.0
3.51
0.413
112.33
2.89
2.31
LT
101.0
100.0
96.0
2.65
0.295
99.00
0.58
0.00
M
85.0
85.0
90.0
2.89
0.295
86.67
-1.55
-2.14
^ \ /
• s No data submitted
0 s Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above
Ji a Below
control limit
control limit
-------
/j
34/37
DRD-LV Performance Evaluation
: Gamma in Water,
3-Nov-1995
X
Barium-133
s
Lab
Res. 1
Res. 2
. Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
MA
106.0
101.0
101.0
2.89
0-295,.
102.67
1.22
0.64
ML
&'>r§S§V3!
"v> »•.><•<¦ A"'
MP
1070
1090
108.0
100
0 118
108.00
2.14
1.56
MQ
•• *> " *¦
MV
'y-\-
% < # J
MX
990
103.0
101.0
2.00
0.236
101.00
0.93
0.35
MY
-• *:
N
101.0
100.0
102.0
1.00
0.118
101.00
0.93
0.35
NH
93.0
93.0
94.0
0.58
0.059
93.33
-0.40
-0.98
NJ
86.0
83.0
89.0
3.00
0.354
86.00
-1.67;
-2.25
NK
> V
,
:,'9"-
O
100.0
99.0
101.0
1.00
0.118
100.00
0.76
0.17
OA
ioo.o
97.0
99.0
i.53
0.177
98.67
0.52
-0;06 ^
OB
- V
ISM
'
.•
ok
„ ' • '
' 4r&-. JyM % ' .'
' J"**" - V r~"',
VW
y ¦¦ - , s ' ^
^ ^ v *
OL
104.0
98.0
87.0
8.62
1.008
96.33
0.12
-0.46
OM
95.0
95.0
900
2.89
0.295
' 93.33
-0.40
-O-98
OZ
' s * V
W
P
-
* ;!:y
, „;v
PB
84.0
85.0
86.0
1.00
0.118
85.00
-1.84
-2.42
PE
104.0
104.0
103.0
0.58
0.059
103.67
1.39
0.81
PI
90.0
90.0
86.0
2.31
0.236
88.67
-1.21
-1.79
PM
89.0
99.0
89.0
5.77
0.591
92.33
-0.57
-1.15
PQ
97.0
99.0
920
361
0.41.3
96.00
0.06
-0.52
PU
WMBKm
•
PV
80.0
92.0
85.0
6.03
0.709
85.67
-1.73
-2.31
PW
92.0
93.0
96.0
2.08
0.236
93.67
-0.34
-0.92
Q
89.Q
92.0
87.0
2.52
0.295
89.33
-1.09
-1.67
QJ
100.0
ioo.o
100.0
0.00
0.000
100.00
0.76
0.17
QM
¦ ^-y% 'i".***• vv y • ' ' ' .'.i
lifliiii
QP
95.0
87.0
106.0
9.54
1.233
96.00
0.06
-0.52
QT
92.0
95.0
97.0
2.52
0.295
94.67
-0.17
-0.75
QU
100.0
100.0
99.0
0.58
0.059
99.67
0.70
0.12
QW
99.0
100.0
98.0
1.00
0.118
99.00
0.58
0.00
QX
102.0
105.0
101.0
2.08
0.236
102.67
1.22
0.64
QZ
93.0
94.0
95.0
1.00
0.118
94.00
-0.28
-0.87
R
92.0
93.0
93.0
0.58
0.059
92.67
-0.51
-1.10
KF
95.0
89.0
90.0
3.21
0.354
91.33
-0.75
-1.33
RH
88.0
89.0
92.0
2.08
0.236
89.67
-1.03
-1.62
RL
, k-'
RO
94.0
86.0
89.0
4.04
0.473
89.67
-1.03
-1.62
RR
92.0
89.0
91.0
1.53
0.177
90.67
-0.86
-1.44
• =
No data submitted
TAG SYMBOLS
It = Above control limit
0 =
V-
Insufficient data
x =
Determined to be an outlier
II = Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 3.Nov-1995 35 / 37
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RU
98.0
96.0
93.0
2.52
0.295
95.67
0.01
-0.58
RV
110.0
103.0
103.0
4.04
0.413
105.33
1.68
1.10
RX
98.0
110.0
106.0
6.11
0.709
104.67
1.56
0.98
RZ
95.0
96.0
97.0
1.00
0.118
96.00
0.06
-0.52
S
97.0
98.0
98.0
0.58
0.059
97.67
0.35
-0.23
sc
86.0
87.0
90.0
2.08
0.236
87.67
-1.38
-1.96
SD
88.0
87.0
81.0
3.79
0.413
85.33
-1.78
-2.37
SF
99.0
98.0
100.0
1.00
0.118
99.00
0.58
0.00
SI
95.0
92.0
91.0
2.08
0.236
92.67
-0.51
-1.10
SM
98.0
105.0
99.0
3.79
0.413
100.67
0.87
0.29
SN
92.0
92.0
91.0
0.58
0.059
91.67
-0.69
-1.27
SR
97.0
91.0
93.0
3.06
0.354
93.67
-0.34
-0.92
ss
107.0
106.0
106.0
0.58
0.059
106.33
1.85
1.27
ST
.•£ {y <
•
sv
98.0
98.0
105.0
4.04
0.413
100.33
0.81
0.23
sx
101.0
97.0
103.0
3.06
0.354
100.33
0.81
0.23
sz
92.0
95.0
93.0
1.53
0.177
93.33
-0.40
-0.98
T
94.0
97.0
97.0
1.73
0.177
96.00
0.06
-0.52
tB-
V)A> -
A m '
TC
98.0
78.0
88.0
10.00
1.345'
88.00
-1.32
-1.91
TD
92.0
87.0
86.0
3.21
0.354
88.33
-1.26
-1.85
TH
96.0
98.0
97.0
1.00
0.118
97.00
0.24
-0.35
TI
101.0
98.0
100.0
1.53
0.177
99.67
0.70
0.12
TL
93.0
92.0
90.0
1.53
0.177
91.67
-0.69
-1.27
TO
" / V'V
" 11 >S "' i
- - v »
A >> "V^v ..
TQ
90.0
88.0
91.0
1.5a
0.177
89.67
-1.03
-1.62
TR
92.0
93.0
96.0
2.08
0.236
93.67
-0.34
-0.92
TS
O V" V
IPplSpSP
' V -is-? ^ ¦:
U
95.0
95.0
98.0
1.73
0.177
96.00
0.06
-0.52
UE
" ,
' t
' ''
- * ' ' ' J
< ' \ ** *>K
UM
V •• '¦*?. 'V
UN
87.0
86.0
92.0
3.21
0.354
88.33
-1.26
-1.85
UP
91.0
93.0
90.0
1.53
0.177
91.33
-0.75
-1.33
UR
61.0
70.0
55:0
7.55
0.886
62.00
-5.83
-6.41 x
UT
32.0 ¦'
- 32.0
32.0
0.00
0.000
32.00
-11.02
-11.60 *
UW
101.0
103.0
99.0
2.00
0.236
101.00
0.93
0.35
UX
82.0
83.0
82.0
0.58
0.059
82.33
-2.30
-2.89
UY
106.0
99.0
101.0
3.61
0.413
102.00
1.10
0.52
VA
94.0
84.0
87.0
5.13
0.591
88.33
-1.26
-1.85
vc
Vv;• w.':
••• ¦ '
WBUfSp
pS|lsiillCS|
V- V
VE
95.0
91.0
92.0
2.08
0.236
92.67
-051
-1.10
VO
•
VH
86.0
83.0
87.0
2.08
0.236
85.33
-1.78
-2.37
VI
93.0
88.0
88.0
2,89
0.295
89.67
-1.03
-1.62
VM
96.0
97.0
98.0
1.00
0.118
97.00
0.24
-0.35
111 I"
• Q
V
No data submitted
Insufficient data
X =
TAG SYMBOLS
Determined to be an outlier
1T 3 Above control limit
U s Below control limit
-------
((
36/37
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
X
Barium-133
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg)
(known) Tog
VO
97.0
98.0
109.0 6.66
0.709
101.33 0.99
0.40
VR
• + *
vs
98.0
99.0
101.0 1.53
0.177
99.33 0.64
0.06
VT
W
99.0
96.0
94.0 2.52
0.295
96.33 0.12
-0.46
WD
103.0
101.0
95.0 4.16
0.473
99.67 0.70
0.12
WF
77.0
77.0
77.0 0.00
0.000
77.00 -3.23
-3.81
WI
%
llgliil
•
WJ
896.0
900.0-
912*0 8.33
0.945
902.6? 139.78
139.20
WK
89.0
88.°
87.0 1.00
0.118
88.00 -1.32
-1.91
WL
751.0
544.0
666.0 103.62
22.384
650.33 96.08
95.49
X
WO
115.0
118.0
113.0 2.52
0.295
115.33 3.41
2.83
X
82.0
93.0
84.0 5.86
0.650
86.33 -1.61
-2.19
Data sorted by Laboratory Average
Average
Ta*
Lab
Average
Tag
Lab
Average Tag
Lab
32.00
X
UT
89.33
Q
93.33
NH
62.00
X
UR
89.67
VI
93.67
TR
77.00
u
WF
89.67
TQ
93.67
SR
79.67
JG
89.67
RO
93.67
PW
82.33
UX
89.67
RH
93.67
K
83.33
A
90.00
BN
93.67
HX
85.00
PB
90.00
BB
94.00
QZ
85.33
VH
90.33
AK
94.00
FZ
85.33
SD
90.67
RR
94.00
DT
85.33
EB
91.00
HK
94.33
EL
85.67
PV
91.00
GL
94.33
E
85.67
BC
91.33
UP
94.33
AF
86.00
NJ
91.33
RF
94.67
QT
86.33
X
91.33
GI
94.67
-
LF
86.67
M
91.33
CJ
94.67
JE
86.67
CK
91.67
TL
94.67
DH
87.00
DM
91.67
SN
94.67
BO
87.67
SC
91.67
DE
95.33
GE
87.67
CX
91.67
AP
95.67
RU
88.00
WK
92.33
PM
96.00
U
88.00
TC
92.33
DG
96.00
T
88.00
CC
92.33
C
96.00
RZ
88.33
VA
92.33
BH
96.00
QP
88.33
UN
92.33
BG
96.00
PQ
88.33
TD
92.67
VE
96.00
GQ
88.67
PI
92.67
SI
96.33
W
88.67
NO
92.67
R
96.33
OL
88.67
I
93.33
'
SZ
96.33
HP
88.67
AW
93.33
OM
96.33
AU
• = No data submitted
TAG SYMBOLS
1T = Above control limit
0 s Insufficient data
^
x = Determined to be an outlier
= Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 3-Nov-1995
37/37
Barium-133
Data sorted by laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
96.67
HJ
99.67
WD
102.67
MA
96.67
AN
99.67
TI
102.67
J
97.00
VM
99.67
QU
103.00
KX
97.00
TH
99.67
KL
103.00
DO
97.00
LE
99.67
CE
103.00
BA
97.00
AJ
99.67
BL
103.00
AZ
97.33
JS
100.00
QJ
103.00
AY
97.67
S
100.00
O
103.33
DL
98.00
EA
100.00
HL
103.67
PE
98.67
OA
100.00
CP
104.00
L
98.67
JY
100.33
sx
104.67
KX
98.67
AE
100.33
sv
104.67
KH
99.00
SF
100.33
IC
105.33
RV
99.00
QW
100.67
SM
105.33
CS
99.00
LT
100.67
DZ
106.33
ss
99.00
BM
101.00
UW
107.67
FL
99.00
AH
101.00
N
108.00
MP
99.33
VS
101.00
MX
108.33
EZ
99.33
FJ
101.33
VO
109.33
HI
99.33
EX
101.33
AL
111.67
BK
99.33
CQ
102.00
UY
112.33
LR
99.33
CM
102.00
DD
115.33
WO
99.33
CA
102.67
QX
650.33
902.67
X
X
WL
WJ
% responding labs
Frequency distribution
10-
T
-r
I
M- -i
•6
responding labs
-4 -2 0 +2 44
Normalized deviation of the mean from the known value
Frequency distribution
10-
¦6
hylifl-
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
"hj
m.
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It a Above control limit
U s Below control limit
-------
|