Results From EPAs Drinking Water Radiochemistry Performance Evaluation Studies For Calendar Year 1994


United States	Office of Research and	EPA/600/R-99/072
Environmental Protection	Development	August 1999
Agency	Washington, DC 20460
Results from EPA's Drinking
Water Radiochemistry
Performance Evaluation
Studies for Calendar Year 1994
O0Mnrd94-O76

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Macmv&
bi'A
top -
2V, TECHNICAL REPORT DATA
(k
1. Report No.
EPA/6OO/R-99/0-74-0 *7^,
2.
3. Recipient's Accession No.
4. Title and Subtitle
Results from EPA's Drinking Water Radiochemistry Performance Evaluation Studies for
Calendar Year 1994 ,
6. Report Date
01/01/94-12/31/94
6. Performing Organization Code
I iSpuoiIui y mcuui lai
pia.s. h Permanent Collection
8. Performing Organization Report
No. (TIP#)
NERL-LV 99-099
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, NV 89119
13. Type of Report & Period Covered
Radiation QA, CY 1994
14. Sponsoring Agency Code
EPA 600/07
15. 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.
US EPA
Headauarters and Chemical Libraries
17. Key Words and Document Analysis EPA W0St BldQ ROOITl 3340
a. Descriptors:
PE Studies, PE, radiochemistry, gross alpha, gross
beta, strontium, tritium, plutonium, uranium, radium,
gamma, mixed gamma, blind, iodine, air filter,
radioactivity
b Identrfiers/Open-ended Terms MSjlCOCl©
1301 Constitut
Washington
202-566
on Ave NW
DC 20004
0556
18 Distnbution Statement
RELEASE TO THE PUBLIC
19. Security Class (This Report)
UNCLASSIFIED
21. No of Pages
438
20 Security Class (This Page)
UNCLASSIFIED
22 Price
EPA 2220-1

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ORD CLEARANCE FORM
7. Internet Address (indicate whether it is your preferred or active URLI. Attach diskette containing the abstract in WordPerfect-
N/A
8. OMIS Task No., GRRA10 (eg, 080101), APG, and APM
Project 9 J OA? 7
9. Project Officer Name, Telephone No. end Cantract/IAQ, CAQ f
S. Pia. 702/798.2102
10. Contract/IA0/Aes>staiice Agreement No.
N/A

1. EPA Report No.
2. Product Code
3. Lab/Draft No.
EPA/600/R-99/ 0 7 <3.
R
NERL'LV 99-099
4. Copyright Permission
~ Yes (Attached)
X Not Applicable
S. TTOe
Results from EPA't Drinking Water Radto Chemistry Performance Evaluation Studies for Calender Year 1994
6. Authorls) In ardor of authorship, Affiliation, and Address (Identify EPA authors with Lab/Centerl
Pin. S. H.
U.S. EPA
National Exposure Research Laboratory
Environmental Sciencas Division, Environmental Chemistry Branch
PO Box 93476
les Vegas. NV 89193-3478
~	Peer Reviewed Journal Article (See block 12|
X Published Report
~	Summary
~	Symposium Paper (See block 12)
~	Book Chapter (See block 12)
~	Exhibit/Poster
~	EPA-Sponsortd Conferenee/Seminar/Workshop
~	Research Brief or Issue Paper
~	Newsletter
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~	Unpublished Report
~	Computer Product, Scientific Data
O Other				
(Identify product type. Use block 12 If needed)
name, place and date. For refereed publications, give name wtrara
manuscript is being submitted, accepted or published.)
Submitted.
Accepted.
.Published.
13. Technical information Manager
MS

Signature
P(a, Originator
Date

Christian, G. Daughton. Supervisor
y. y;
Dane
15. Comments or Keywords
16a. Product's Pear Review Category
(Refereed papers are usually Category 3: abstracts, EPA reports
and non-refereed products are usually Category 4.)
~	1. Major sci. & tech, work product (AA signs In 18)
~	2. Important sci. & lech. work product (10 eigne In 16)
O 3. General sci. & tech. work product (0C signs 14, DD signs 10)
X 4. Other science & tech. work product (BC signs 14 and 18)
16b.
Contact for peer review comment* (Signature and Octal
17. This product enunciates now policy or effects existing policy? (Choos* end initial one). O Yea, memo attecAed
XNo.
18. Lab/Cantor Director Signature and Date
(Title and Signature)
Xi. *>'/,
ORD-362 (Cin - Rsv. 2/99)
..Christian G. Daunhton. Chief. Environmental Chemistry Branch Onta
C:t2_ofdriv«\OOCVWP\rocyfm94.wpd

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United States	Office of Research and	EPA/600/R-94/077
Environmental Protection	Development	January 1994
Agency	Washington, DC 20460
Strontium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the January 14, 1994 Data

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Strontium in Water
Performance Evaluation Study
January 14, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada

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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 14, 1994.
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.
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure

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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.

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.
EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994 1/14
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.

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-
2/14 EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994
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.

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EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994
3/14
Strontium-89
Statistical Summary
129 Participants
The known value of this nuclide is 25.0 pCi/1 with an expected precision of 5.0; the control limits
are 16.3 to 33.7; the warning regions are 16.3 to 19.2 and 30.8 to 33.7
37(28.7 %) Failed to respond •
3(2.3 %) Outliers '
4(3.1 %) Out of control
but not an outlier
Statistic
; 75(58.1 %) Within all limits
Respondents
10(7.8 %) 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
25.92
19.26
370.96
74.30
3.70
0.05
23.67
-5.33
-0.07
Grand Avg 23.74
4.01
16.08
16.90
-5.05
-0.31
23.67
-5.33
-0.33
7(7.6 %) More than 3 norm. S.D.
10(10.9 %) Between 2 and 3 norm. S.D.'
. 51(55.4 %) Within 1 norm. S.D.
of known value
'L.-J '
>"-.V f5
X l I I	24(26.1 %) Between 1 and 2 norm. S.D.

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c,
4/14 EMSL-LV Performance Evaluation: Strontium
in Water,
¦ 				^
14-Jan-1994
Strontium-89






N
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
26.0
27.0
25.0
1.00
0.236
26.00
0.78
0.35
AE
23.0
24.0
23.0
0.58
0.118
23.33
-0.14
-0.58
AF
25.0
24.0
26.0
1.00
0.236
25.00
0.44
0.00
AI







•
AJ
23.0
26.0
24.0
1.53
0.354
24.33
0.21
-0.23
AK
20.0
20.0
20.0
0.00
0.000
20.00
-1.29
-1.73
AL
27.0
26.0
28.0
1.00
0.236
27.00
1.13
0.69
AU
28.0
28.0
28.0
0.00
0.000
28.00
1.48
1.04
AW
21.0
22.0
20.0
1.00
0.236
21.00
-0.95
-1.39
AY







•
AZ
20.0
23.0
25.0
2.52
0.591
22.67
-0.37
-0.81
BA
28.0
29.0
27.0
1.00
0.236
28.00
1.48
1.04
BB







•
BC
22.0
23.0
22.0
0.58
0.118
22.33
-0.49
-0.92
BG







' •
BH
20.0
16.0
18.0
2.00
0.473
18.00
-1.99
-2.42
BL
21.0
19.0
24.0
2.52
0.591
21.33
-0.83
-1.27
BM
30.0
29.0
27.0
1.53
0.354
28.67
1.71
1.27
BO
25.0
26.0
28.0
1.53
0.354
26.33
0.90
0.46
C
25.0
26.0
26.0
0.58
0.118
25.67
0.67
0.23
CA
19.0
22.0
19.0
1.73
0.354
20.00
-1.29
-1.73
CE







•
CG
30.0
26.0
29.0
2.08
0.473
28.33
1.59
1.15
CJ
24.0
23.0
25.0
1.00
0.236
24.00
0.09
-0.35
CK
23.0
26.0
23.0
1.73
0.354
24.00
0.09
-0.35
CO
26.0
20.0
24.0
3.06
0.709
23.33
-0.14
-0.58
CP







•
CQ
21.0
19.0
21.0
1.15
0.236
20.33
-1.18
-1.62
CS
31.0
33.0
30.0
1.53
0.354
31.33
2.63
2.19
CX
25.0
24.0
28.0
2.08
0.473
25.67
0.67
0.23
D
23.0
24.0
25.0
1.00
0.236
24.00
0.09
-0.35
DD
22.0
23.0
23.0
0.58
0.118
22.67
-0.37
-0.81
DE
21.0
22.0
22.0
0.58
0.118
21.67
-0.72
-1.15
DG
22.0
22.0
22.0
0.00
0.000
22.00
-0.60
-1.04
DO
25.0
22.0
20.0
2.52
0.591
22.33
-0.49
-0.92
DT
23.0
24.0
22.0
1.00
0.236
23.00
-0.26
-0.69
DZ
27.0
27.0
25.0
1.15
0.236
26.33
0.90
0.46
E
25.0
24.0
27.0
. 1.53
0.354
25.33
0.55
0.12
EB
23.0
24.0
24.0
0.58
0.118
23.67
-0.02
-0.46
EH
25.0
27.0
25.0
1.15
0.236
25.67
0.67
0.23
EL
27.0
28.0
32.0
2.65
0.591
29.00
1.82
1.39
FE
27.0
26.0
27.0
0.58
0.118
26.67
1.01
0.58
FU
26.0
28.0
28.0
1.15
0.236
27.33
1.25
0.81
HK
24.0
24.0
24.0
0.00
0.000
24.00
0.09
-0.35
HU
16.0
17.0
20.0
2.08
0.473
17.67
-2.10
-2.54
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
[0 =
Insufficient data
X s
Determined to be an outlier
U = Below control limit

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EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994 5/14
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
I
22.0
22.0
18.0
2.31
0.473
20.67
-1.06
-1.50

IA








•
IC








•
J
24.0
24.0
23.0
0.58
0.118
23.67
-0.02
-0.46

JE
25.0
24.0
25.0
0.58
0.118
24.67
0.32
-0.12

JG









JS
23.0
24.0
22.0
1.00
0.236
23.00
-0.26
-0.69

JY
20.0
18.0
16.0
2.00
0.473
18.00
-1.99
-2.42

K
20.0
21.0
20.0
0.58
0.118
20.33
-1.18
-1.62

KH
25.0
27.0
24.0
1.53
0.354
25.33
0.55
0.12

KL
26.0
26.0
31.0
2.89
0.591
27.67
1.36
0.92

KX
26.0
24.0
28.0
2.00
0.473
26.00
0.78
0.35

L
27.0
26.0
26.0
0.58
0.118
26.33
0.90
0.46

LM








•
LS









LT
23.0
23.0
23.0
0.00
0.000
23.00
-0.26
-0.69

M
25.0
24.0
25.0
0.58
0.118
24.67
0.32
-0.12

MN









MQ
20.0
21.0
19.0
1.00
0.236
20.00
-1.29
-1.73

MS
30.0
31.0
31.0
0.58
0.118
30.67
2.40
1.96

N
23.0
24.0
25.0
1.00
0.236
24.00
0.09
-0.35

NB









NI









NJ
22.0
28.0
17.0
5.51
1.570
22.33
-0.49
-0.92

NT
21.0
23.0
25.0
2.00
0.473
23.00
-0.26
-0.69

OA
207.0
216.0
i78.0
1947
7.421
200:00
61106
60.62
X
OL









OM









PB
25.0
25.0
24.0
0.58
0.118
24.67
0.32
-0.12

PC
40.0
30.0
32.0
5.29
1.345
34.00
3.55
3.12
It
PP








•
PT
31.0
29.0
28.0
1.53
0.354
29.33
1.94
1.50

PU
23.0
23.0
21.0
1.15
0.236
22.33
-0.49
-0.92

PV
20.0
21.0
23.0
1.53
0.354
21.33
-0.83
-1.27

Q
20.0
25.0
26.0
3.21
0.709
23.67
-0.02
-0.46

QJ








• v
QK
19.0
17.0
18.0
1.00
0.236
18.00
-1.99
-2.42

QL
39.0
37.0
24.0
8.14
2.470
33.33
3.32
2.89

QM
19.0
23.0
19.0
2.31
0.473
20.33
-1.18
-1.62

QU
21.0
22.0
25.0
2.08
0.473
22.67
-0.37
-0.81

QW








*
QX








m.
QZ
23.0
24.0
22.0
1.00
0.236
23.00
-0.26
-0.69

R
19.0
23.0
18.0
2.65
0.591
20.00
-1.29
-1.73

RC









• =
0 a
	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It 3 Above control limit
JJ h Below control limit

-------
6/14
EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994


Stronti
um-89








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
RF








•
RK








•
RL








•
RM
21.0
29.0
21.0
4.62
0.945
23.67
-0.02
-0.46

RR
29.0
27.0
30.0
1.53
0.354
28.67
1.71
1.27

RV








•
S
23.0
24.0
24.0
0.58
0.118
23.67
-0.02
-0.46

sc
16.0
19.0
24.0
4.04
0.945
19.67
-1.41
-1.85

SD
21.0
24.0
23.0
1.53
0.354
22.67
-0.37
-0.81

SF
13.0
13.0
13.0
0.00
0.000
13.00
-3.72
-4.16

SI








•
SK








•
SM
16.0
18.0
20.0
2.00
0.473
18.00
-1.99
-2.42

SS
26.0
28.0
27.0
1.00
0.236
27.00
1.13
0.69

ST
23.0
21.0
20.0
1.53
0.354
21.33
-0.83
-1.27

sz








•
T
25.0
22.0
2e.o
1.73
0.354
24.00
0.09
-0.35

TA








•
TD
44.0
68.0
76.0
16.66
6.296
62.67
13.49
13.05
X
TG








•
TH








•
TI
19.0
20.0
18.0
1.00
0.236
19.00
-1.64
-2.08

TL
23.0
31.0
24.0
4.36
0.945
26.00
0.78
0.35

TQ
25.0
28.0
25.0
1.73
0.354
26.00
0.78
0.35

TS








ft.
TV








ft
U
24.0
22.0
21.0
1.53
0.354
22.33
-0.49
-0.92

UE
31.0
33.0
34.0
1.53
0.354
32.67
3.09
2.66

UN
12.0
19.0
14.0
3.61
0.827
15.00
-3.03
-3.46
li
UP
12.0
12.0
13.0
0.58
0.118
12.33
-3.95
-4.39

uw
27.0
29.0
31.0
2.00
0.473
29.00
1.82
1.39

VA








•
VC








•
VG
7.0
8.0
14.0
3.79
0.827
9.67
-4.87
-5.31
X
VN








•
W
24.0
22.0
24.0
1.15
0.236
23.33
-0.14
-0.58

X
17.0
18.0
18.0
0.58
0.118
17.67
-2.10
-2.54

Y








•
Z
28.0
25.0
24.0
2.08
0.473
25.67
0.67
0.23

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
9.67
X
VG
15.00 U
UN
18.00
SM
12.33
II
UP
17.67
X
18.00
QK
13.00
u
SF
17.67
HU
18.00
JY
• = No data submitted

TAG SYMBOLS

It
= Above control limit
0 = Insufficient data

x = Determined to be an outlier

= Below control limit

-------
EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994 7/14
Strontium-89
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.00

BH
23.00

NT
25.67

C
19.00

TI
23.00

LT
26.00

TQ
19.67

SC
23.00

JS
26.00

TL
20.00

R
23.00

DT
26.00

KX
20.00

MQ
23.33

W
26.00

A
20.00

CA
23.33

CO
26.33

L
20.00

AK
23.33

AE
26.33

DZ
20.33

QM
23.67

S
26.33

BO
20.33

K
23.67

RM
26.67

FE
20.33

CQ
23.67

Q
27.00

SS
20.67

I
23.67

J
27.00

AL
21.00

AW
23.67

EB
27.33

FU
21.33

ST
24.00

T
27.67

KL
21.33

PV
24.00

N
28.00

BA
21.33

BL
24.00

HK
28.00

AU
21.67

DE
24.00

D
28.33

CG
22.00

DG
24.00

CK
28.67

RR
22.33

U
24.00

CJ
28.67

BM
22.33

PU
24.33

AJ
29.00

UW
22.33

NJ
24.67

PB
29.00

EL
22.33

DO
24.67

M
29.33

PT
22.33

BC
24.67

JE
30.67

MS
22.67

SD
25.00

AF
31.33

CS
22.67

QU
25.33

KH
32.67

UE
22.67

DD
25.33

E
33.33

QL
22.67

AZ
25.67

Z
34.00
IT
PC
23.00

QZ
25.67

EH
62.67
X
TD



25.67

CX
200.00
X
OA
responding labs	Frequency distribution
10-
¦4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
I 5 No data submitted	TAG SYMBOLS	IT 2 Above control limit
0 = Insufficient data	x = Determined to be an outlier	U = Below control limit ,
^ '

-------
8/14 EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994
Strontium-89
% responding labs	Frequency distribution
10-

			r
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average

-------
EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994
9/14
Strontium-90	Statistical Summary	129 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
29(22.5 %) Failed to respond
2(1.6 %) Outliers '
Statistic
. 96(74.4 %) Within all limits
Respondents
2(1.6 %) 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
15.68
9.51
90.37
60.63
4.53
0.07
14.67
-2.22
-0.04
Grand Avg 14.59
2.17
4.70
14.85
-2.72
-0.19
14.67
-2.22
-0.15
2(2.0 %) More than 3 norm. S.D. «.
2(2.0 %) Between 2 and
75(75.0 %) Within 1 norm. S.D.
of known value
Between 1 and 2 norm. S.D.

-------
10/14 EMSL-LV Performance Evaluation: Strontium
\
in Water,
	 ^
14-Jan-1994
Strontium-90







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
14.0
13.0
14.0
0.58
0.118
13.67
-0.32
-0.46
AE
14.0
13.0
12.0
1.00
0.236
13.00
-0.55
-0.69
AF
14.0
14.0
15.0
0.58
0.118
14.33
-0.09
-0.23
AI







•
AJ
14.0
10.0
12.0
2.00
0.473
12.00
-0.90
-1.04
AK
16.0
15.0
16.0
0.58
0.118
15.67
0.37
0.23
AL
13.0
13.0
14.0
0.58
0.118
13.33
-0.44
-0.58
AU
16.0
16.0
14.0
1.15
0.236
15.33
0.26
0.12
AW
18.0
18.0
19.0
0.58
0.118
18.33
1.30
1.15
AY
13.0
13.0
13.0
0.00
0.000
13.00
-0.55
-0.69
AZ
14.0
15.0
16.0
1.00
0.236
15.00
0.14
0.00
BA
13.0
14.0
14.0
0.58
0.118
13.67
-0.32
-0.46
BB
15.0
17.0
17.0
1.15
0.236
16.33
0.60
0.46
BC
12.0
13.0
12.0
0.58
0.118
12.33
-0.78
-0.92
BG
15.0
16.0
16.0
0.58
0.118
15.67
0.37
0.23
BH
16.0
15.0
15.0
0.58
0.118
15.33
0.26
0.12
BL
15.0
16.0
13.0
1.53
0.354
14.67
0.03
-0.12
BM
14.0
14.0
14.0
0.00
0.000
14.00
-0.21
-0.35
BO
13.0
13.0
13.0
0.00
0.000
13.00
-0.55
-0.69
C
16.0
15.0
15.0
0.58
0.118
15.33
0.26
0.12
CA
14.0
13.0
15.0
1.00
0.236
14.00
-0.21
-0.35
CE
15.0
15.0
15.0
0.00
0.000
15.00
0.14
0.00
CG
13.0
17.0
14.0
2.08
0.473
14.67
0.03
-0.12
CJ
14.0
17.0
16.0
1.53
0.354
15.67
0.37
0.23
CK
18.0
17.0
20.0
1.53
0.354
18.33
1.30
1.15
CO
15.0
14.0
14.0
0.58
0.118
14.33
-0.09
-0.23
CP








CQ
13.0
12.0
13.0
0.58
0.118
12.67
-0.67
-0.81
CS
18.0
19.0
17.0
1.00
0.236
18.00
1.18
1.04
CX
16.0
16.0
15.0
0.58
0.118
15.67
0.37
0.23
D
14.0
14.0
14.0
0.00
0.000
14.00
-0.21
-0.35
DD
15.0
14.0
15.0
0.58
0.118
14.67
0.03
-0.12
DE
16.0
16.0
17.0
0.58
0.118
16.33
0.60
0.46
DG
12.0
14.0
10.0
2.00
0.473
12.00
-0.90
-1.04
DO
15.0
14.0
11.0
2.08
0.473
13.33
-0.44
-0.58
DT
15.0
16.0
15.0
0.58
0.118
15.33
0.26
0.12
DZ
17.0
17.0
16.0
0.58
0.118
16.67
0.72
0.58
E
16.0
16.0
15.0
0.58
0.118
15.67
0.37
0.23
EB
11.0
12.0
12.0
0.58
0.118
11.67
-1.01
-1.15
EH
15.0
14.0
15.0
0.58
0.118
14.67
0.03
-0.12
EL
13.0
12.0
12.0
0.58
0.118
12.33
-0.78
-0.92
FE
15.0
15.0
15.0
0.00
0.000
15.00
0.14
0.00
FU
14.0
14.0
15.0
0.58
0.118
14.33
-0.09
-0.23
HK
14.0
14.0
14.0
0.00
0.000
14.00
-0.21
-0.35
HU
19.0
17.0
17.0
1.15
0.236
17.67
1.07
0.92
• =
No data submitted

TAG SYMBOLS

IT = Above control limit

Insufficient data
x =
Determined to be an outlier
li s Below control limit
'J

-------
f(	
EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994
	^
11/14
Strontium-90








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
I
17.0
19.0
19.0
1.15
0.236
18.33
1.30
1.15

IA








•
IC








•
J
15.0
14.0
15.0
0.58
0.118
14.67
0.03
-0.12

JE
18.0
21.0
20.0
1.53
0.354
19.67
1.76
1.62

JG








•
JS
16.0
14.0
16.0
1.15
0.236
15.33
0.26
0.12

JY
9.0
12.0
14.0
2.52
0.591
11.67
-1.01
-1.15

K
14.0
11.0
14.0
1.73
0.354
13.00
-0.55
-0.69

KH
15.0
13.0
15.0
1.15
0.236
14.33
-0.09
-0.23

KL
15.0
15.0
14.0
0.58
0.118
14.67
0.03
-0.12

KX
14.0
14.0
13.0
0.58
0.118
13.67
-0.32
-0.46

L
14.0
14.0
14.0
0.00
0.000
14.00
-0.21
-0.35

LM









LS








»
LT
18.0
18.0
18.0
0.00
0.000
18.00
1.18
1.04

M
15.0
15.0
18.0
1.73
0.354
16.00
0.49
0.35

MN









MQ
20.0
19.0
20.0
0.58
0.118
19.67
1.76
.1.62

MS
13.0
12.0
12.0
0.58
0.118
12.33
-0.78
-0.92

N
13.0
14.0
15.0
1.00
0.236
14.00
-0.21
-0.35

NB









NI








•
NJ
13.0
10.0
12.0
1.53
0.354
11.67
-1.01
-1.15

NT
12.0
14.0
16.0
2.00
0.473
14.00
-0.21
-0.35

OA
104.0
101,0
112.0
5.69
1570
106,67
3156
31.41
X
OL








•-
OM









PB
16.0
15.0
15.0
0.58
0.118
15.33
0.26
0.12

PC
10.0
13.0
15.0
2.52
0.591
12.67
-0.67
-0.81

PP
18.0
19.0
19.0
0.58
0.118
18.67
1.41
1.27

PT
14.0
14.0
13.0
0.58
0.118
13.67
-0.32
-0.46

PU
8.0
8.0
11.0
1.73
0.354
9.00
-1.94
-2.08

PV
15.0
17.0
24.0
4.73
1.120
18.67
1.41
1.27

Q
16.0
17.0
18.0
1.00
0.236
17.00
0.83
0.69

QJ
14.0
14.0
15.0
0.58
0.118
14.33
-0.09
-0.23

QK
16.0
17.0
15.0
1.00
0.236
16.00
0.49
0.35

QL
12.0
11.0
12.0
0.58
0.118
11.67
-1.01
-1.15

QM
18.0
13.0
15.0
2.52
0.591
15.33
0.26
0.12

QU
9.0
10.0
11.0
1.00
0.236
10.00
-1.59
-1.73

QW








•
QX








• -
QZ
14.0
13.0
14.0
0.58
0.118
13.67
-0.32
-0.46

R
12.0
13.0
10.0
1.53
0.354
11.67
-1.01
-1.15

RC









• =
No data submitted

TAG SYMBOLS

rr 3 Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
JJ 5 Below control limit
	0

-------
12/ 14
EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994


Strontium-90








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
RF








•
RK








•
RL








•
RM
14.0
12.0
16.0
2.00
0.473
14.00
-0.21
-0.35

RR
15.0
16.0
14.0
1.00
0.236
15.00
0.14
0.00

RV








•
S
15.0
16.0
16.0
0.58
0.118
15.67
0.37
0.23

sc
15.0
14.0
14.0
0.58
0.118
14.33
-0.09
-0.23

SD
15.0
14.0
15.0
0.58
0.118
14.67
0.03
-0.12

SF
21.0
19.0
20.0
1.00
0.236
20.00
1.87
1.73

SI








•
SK








•
SM
11.0
13.0
11.0
1.15
0.236
11.67
-1.01
-1.15

SS
15.0
13.0
14.0
1.00
0.236
14.00
-0.21
-0.35

ST
15.0
16.0
17.0
1.00
0.236
16.00
0.49
0.35

SZ
15.0
15.0
16.0
0.58
0.118
15.33
0.26
0.12

T
15.0
16.0
15.0
0.58
0.118
15.33
0.26
0.12

TA








•
TD
36.0
32.0
29.0
3.61
0.827
32.33
6.15
6.00
X
TG








•
TH
12.0
10.0
9.0
1.53
0.354
10.33
-1.48
-1.62

TI
15.0
15.0
17.0
1.15
0.236
15.67
0.37
0.23

TL
16.0
15.0
15.0
0.58
0.118
15.33
0.26
0.12

TQ
14.0
14.0
15.0
0.58
0.118
14.33
-0.09
-0.23

TS








•
TV








•
U
16.0
17.0
17.0
0.58
0.118
16.67
0.72
0.58

UE
14.0
14.0
15.0
0.58
0.118
14.33
-0.09
-0.23

UN
15.0
14.0
20.0
3.21
0.709
16.33
0.60
0.46

UP
13.0
13.0
14.0
0.58
0.118
13.33
-0.44
-0.58

uw
15.0
15.0
15.0
0.00
0.000
15.00
0.14
0.00

VA








•
VC








•
VG
9.0
9.0
8.0
0.58
0.118
8.67
-2.05
-2.19

VN








•
W
14.0
14.0
15.0
0.58
0.118
14.33
-0.09
-0.23

X
12.0
12.0
12.0
0.00
0.000
12.00
-0.90
-1.04

Y








*
Z
16.0
15.0
14.0
1.00
0.236
15.00
0.14
0.00

Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
8.67
VG
10.33
TH
11.67
QL
9.00
PU
11.67
SM
11.67
NJ
10.00
QU
11.67
R
11.67
JY
• s No data submitted

TAG SYMBOLS

It
3 Above control limit
0 = Insufficient data

x = Determined to be an outlier

- Below control limit

-------
- —
EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994 13 /14
Strontium-90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Taj*
Lab
Average
Taj?
Lab
11.67

EB
14.33

W
15.33

BH
12.00

X
14.33

UE
15.33

AU
12.00

DG
14.33

TQ
15.67

TI
12.00

AJ
14.33

SC
15.67

S
12.33

MS
14.33

QJ
15.67

E
12.33

EL
14.33

KH
15.67

CX
12.33

BC
14.33

FU
15.67

CJ
12.67

PC
14.33

CO
15.67

BG
12.67

CQ
14.33

AF
15.67

AK
13.00

K
14.67

SD
16.00

ST
13.00

BO
14.67

KL
16.00

QK
13.00

AY
14.67

J
16.00

M
13.00

AE
14.67

EH
16.33

UN
13.33

UP
14.67

DD
16.33

DE
13.33

DO
14.67

CG
16.33

BB
13.33

AL
14.67

BL
16.67

U
13.67

QZ
15.00

Z
16.67

DZ
13.67

PT
15.00

UW
17.00

Q
13.67

KX
15.00

RR
17.67

HU
13.67

BA
15.00

FE
18.00

LT
13.67

A
15.00

CE
18.00

CS
14.00

SS
15.00

AZ
18.33

I
14.00

RM
15.33

TL
18.33

CK
14.00

NT
15.33

T
18.33

AW
14.00

N
15.33

SZ
18.67

PV
14.00

L
15.33

QM
18.67

PP
14.00

HK
15.33

PB
19.67

MQ
14.00

D
15.33

JS
19.67

JE
14.00

CA
15.33

DT
20.00

SF
14.00

BM
15.33

C
32.33
105.67
X
X
TD
OA
%
10
responding labs	Frequency distribution

-i	1	1	.	¦¥¦¦¦¦¥¦¦¦ f		,	,	,	
-6	-4	-2	0	+2+4	+6
Normalized deviation of the mean from the known value
• s No data submitted	TAG SYMBOLS	ft h Above control limit
0 = Insufficient data	x = Determined to be an outlier	U s Below control limit

-------
14/14
EMSL-LV Performance Evaluation: Strontium in Water, 14-Jan-1994
Strontium-90
% responding labs
Frequency distribution
10-
IiJlL
-6
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
—r~
+6

-------
United States	Environmental Monitoring	EPA 600/R-94/041
Environmental Protection	Systems Laboratory	January 1994
Agency	P.O. Box 93478
Las Vegas NV 89193-3478
Research and Development	
Gross Alpha-Beta in Water
Performance Evaluation
Study	Library Use Only
A Statistical Evaluation of the
January 28, 1994 Data
property of
U.S. EPA Library
las Vegas, NV 89119
0014fsd94.121a

-------
Gross Alpha-Beta in Water
Performance Evaluation Study
January 28, 1994
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 Gross Alpha-Beta in Water; January 28, 1994.
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.
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, 28-Jan-1994 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 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 ""it. If the centred 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.

-------
f
2/20 EMSL-LV Performance Evaluation: Gross Alpha*Beta in Water, 28-Jan-1994
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, 28-Jan-1994 3 / 20
r	¦>
Gross Alpha	Statistical Summary	253 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
Statistic		Respondents	Non-outliers
Mean
14.38
Grand Avg 13.75
Std. Dev.
5.97
4.25
Variance
35.68
18.08
% Coef. of Var.
41.55
30.92
% deviation of mean from known value
-4.15
-8.32
Norm. dev. of mean from known value
-0.10
-0.29
Median
13.00
13.00
% deviation of median from known value
-13.33
-13.33
Norm. dev. of median from known value
-0.33
-0.47

-------
(, ---
4/20 EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 28-Jan-1994
	
Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
14.0
13.0
13.0
0.58
0.118
13.33
-0.15
-0.58

AA








•
AE
17.0
19.0
20.0
1.53
0.354
18.67
1.70
1.27

AF
16.0
15.0
12.0
2.08
0.473
14.33
0.20
-0.23

AI








• -
AJ
19.0
20.0
19.0
0.58
0.118
19.33
1.93
1.50

AK
28.0
26.0
25.0
1.53
0.354
26.33
4.36
3.93
ft
AL
12.0
14.0
10.0
2.00
0.473
12.00
-0.61
-1.04

AN
11.0
9.0
9.0
1.15
0.236
9.67
-1.42
-1.85

AO
8.0
10.0
11.0
1.53
0.354
9.67
-1.42
-1.85

AP
16.0
15.0
16.0
0.58
0.118
15.67
0.66
0.23

AR
16.0
14.0
15.0
1.00
0.236
15.00
0.43
0.00

AU
15.0
15.0
16.0
0.58
0.118
15.33
0.55
0.12

AW
17.0
18.0
15.0
1.53
0.354
16.67
1.01
0.58

AY








• .
AZ
16.0
13.0
13.0
1.73
0.354
14.00
0.09
-0.35

BA
13.0
13.0
15.0
1.15
0.236
13.67
-0.03
-0.46

BB
12.0
13.0
14.0
1.00
0.236
13.00
-0.26
-0.69

BC
22.0
23.0
20.0
1.53
0.354
21.67
2.74
2.31

BG
22.0
21.0
22.0
0.58
0.118
21.67
2.74
2.31

BH
15.0
14.0
16.0
1.00
0.236
15.00
0.43
0.00

BI
10.0
10.0
10.0
0.00
0.000
10.00
-1.30
-1.73

BK
12.0
13.0
14.0
1.00
0.236
13.00
-0.26
-0.69

BL
13.0
13.0
14.0
0.58
0.118
13.33
-0.15
-0.58

BM
12.0
13.0
11.0
1.00
0.236
12.00
-0.61
-1.04

BN
19.0
17.0
19.0
1.15
0.236
18.33
1.59
1.15

BO
11.0
12.0
10.0
1.00
0.236
11.00
-0.95
-1.39

BW








' •
C
11.0
10.0
10.0
0.58
0.118
10.33
-1.18
-1.62

CA
20.0
21.0
20.0
0.58
0.118
20.33
2.28
1.85

CE
15.0
15.0
14.0
0.58
0.118
14.67
0.32
-0.12

CG
13.0
13.0
13.0
0.00
0.000
13.00
-0.26
-0.69

CJ
22.0
22.0
21.0
0.58
0.118
21.67
2.74
2.31

CK
16.0
16.0
16.0
0.00
0.000
16.00
0.78
0.35

CO
6.0
13.0
13.0
4.04
0.827
10.67
-1.07
-1.50

CP
17.0
19.0
20.0
1.53
0.354
18.67
1.70
1.27

CQ
24.0
25.0
26.0
1.00
0.236
25.00
3.90
3.46
ft
CS
14.0
14.0
11.0
1.73
0.354
13.00
-0.26
-0.69

CX
10.0
8.0
8.0
1.15
0.236
8.67
-1.76
-2.19

D
15.0
15.0
15.0
0.00
0.000
15.00
0.43
0.00

DB
12.0
13.0
14.0
1.00
0.236
13.00
-0.26
-0.69

DD
8.0
9.0
8.0
0.58
0.118
8.33
-1.88
-2.31

DE
22.0
23.0
23.0
0.58
0.118
22.67
3.09
2.66

DG








<*
DH
12.0
12.0
14.0
1.15
0.236
12.67
-0.38
-0.81

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 3
Insufficient data
x =
Determined to be an outlier
s Below control limit

-------
.. 	„
s\
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994 5/20
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DI








•
DJ








•
DM








•
DO








•
DP
8.0
9.0
8.0
0.58
0.118
8.33
-1.88
-2.31

DR








•
DS
15.0
19.0
16.0
2.08
0.473
16.67
1.01
0.58

DT
15.0
17.0
14.0
1.53
0.354
15.33
0.55
0.12

DX
14.0
14.0
10.0
2.31
0.473
12.67
-0.38
-0.81

DZ
13.0
12.0
14.0
1.00
0.236
13.00
-0.26
-0.69

E
13.0
15.0
13.0
1.15
0.236
13.67
-0.03
-0.46

EA
14.0
14.0
15.0
0.58
0.118
14.33
0.20
-0.23

EB
21.0
20.0
21.0
0.58
0.118
20.67
2.40
1.96

EH
13.0
13.0
12.0
0.58
0.118
12.67
-0.38
-0.81

EL
19.0
13.0
13.0
3.46
0.709
15.00
0.43
0.00

EN
13.0
17.0
12.0
2.65
0.591
14.00
0.09
-0.35

EO
10.0
10.0
10.0
0.00
0.000
10.00
-1.30
-1.73

ER
11.0
11.0
12.0
0.58
0.118
11.33
-0.84
-1.27

ES








•
EV
11.0
8.0
15.0
3.51
0.827
11.33
-0.84
-1.27

EW








•
FE
14.0
13.0
14.0
0.58
0.118
13.67
-0.03
-0.46

FF
14.0
13.0
13.0
0.58
0.118
13.33
-0.15
-0.58

FJ
9.0
7.0
13.0
3.06
0.709
9.67
-1.42
-1.85

FK








•
FL
19.0
14.0
26.0
6.03
1.795
19.67
2.05
1.62

FN
10.0
12.0
11.0
1.00
0.236
11.00
-0.95
-1.39

FP









FU








• <
FZ









GE








' •
GJ
8.0
5.0
6.0
1.53
0.354
6.33
-2.57
-3.00

GO
44.0
41.0
38.0
3.00
0:709.
4il6o
9.44
9.01

GQ
9.0
10.0
9.0
0.58
0.118
9.33
-1.53
-1.96

GT
16.0
14.0
15.0
1.00
0.236
15.00
0.43
0.00

GZ
12.0
11.0
13.0
1.00
0.236
12.00
-0.61
-1.04

HE
17.0
18.0
17.0
0.58
0.118
17.33
1.24
0.81

HH
8.0
11.0
10.0
1.53
0.354
9.67
-1.42
-1.85

HI
14.0
18.0
15.0
2.08
0.473
15.67
0.66
0.23

HK
19.0
18.0
19.0
0.58
0.118
18.67
1.70
1.27

HL
11.0
11.0
11.0
0.00
0.000
11.00
-0.95
-1.39

HP
15.0
14.0
12.0
1.53
0.354
13.67
-0.03
-0.46

BTU
29.0
28.0
3l!0
1.53
0.364
29.33
5.40
4.97
X
I
12.0
13.0
12.0
0.58
0.118
12.33
-0.49
-0.92

IC
21.0
20.0
18.0
1.53
0.354
19.67
2.05
1.62

• s No data submitted TAG SYMBOLS	IT S Above control limit
^ 0 = Insufficient data	x = Determined to be an outlier	II 3 Below control limit

-------
f(	








	
6/20
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994

Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
IE
19.0
20.0
18.0
1.00
0.236
19.00
1.82
1.39

n
4.0
4.0
4.0
0.00
0.000
4.00
-3.38
-3.81

IU








•
j
17.0
19.0
15.0
2.00
0.473
17.00
1.13
0.69

JG
8.0
8.0
5.0
1.73
0.354
7.00
-2.34
-2.77

JG
17.0
17.0
16.0
0.58
0.118
16.67
1.01
0.58

JH








•
JM
12.0
14.0
14.0
1.15
0.236
13.33
-0.15
-0.58

JN
13.0
15.0
13.0
1.15
0.236
13.67
-0.03
-0.46

JP
13.0
13.0
13.0
0.00
0.000
13.00
-0.26
-0.69

JQ
9.0
10.0
8.0
1.00
0.236
9.00
-1.65
-2.08

JS
12.0
13.0
12.0
0.58
0.118
12.33
-0.49
-0.92

JY
12.0
14.0
14.0
1.15
0.236
13.33
-0.15
-0.58

K
18.0
18.0
15.0
1.73
0.354
17.00
1.13
0.69

KC
11.0
12.0
11.0
0.58
0.118
11.33
-0.84
-1.27

KE
14.0
13.0
14.0
0.58
0.118
13.67
-0.03
-0.46

KF








•
KH
13.0
14.0
12.0
1.00
0.236
13.00
-0.26
-0.69

KT
13.0
12.0
14.0
1.00
0.236
13.00
-0.26
-0.69

KX
23.0
25.0
25.0
1.15
0.236
24.33
3.67
3.23
It
L
13.0
14.0
13.0
0.58
0.118
13.33
-0.15
-0.58

LE
8.0
9.0
11.0
1.53
0.354
9.33
-1.53
-1.96

LF
10.0
11.0
10.0
0.58
0.118
10.33
-1.18
-1.62

LG
19.0
22.0
19.0
1.73
0.354
20.00
2.16
1.73

LL
23.0
25.0
22.0
1.53
0.354
23.33
3.32
2.89

LM









LR
8.0
11.0
9.0
1.53
0.354
9.33
-1.53
-1.96

LS








•
LT
9.0
12.0
10.0
1.53
0.354
10.33
-1.18
-1.62

LZ








•
M
19.0
18.0
19.0
0.58
0.118
18.67
1.70
1.27

MA








•
MN








•
MQ
14.0
15.0
17.0
1.53
0.354
15.33
0.55
0.12

MS
9.0
10.0
9.0
0.58
0.118
9.33
-1.53
-1.96

MV
12.0
9.0
10.0
1.53
0.354
10.33
-1.18
-1.62

MX








•
MY
16.0
15.0
15.0
.0.58
0.118
15.33
0.55
0.12

N
15.0
15.0
15.0
0.00
0.000
15.00
0.43
0.00

NA








•
NB
15.0
11.0
28.0
8.89
2.921
18.00
1.47
1.04

NE
24.0
25.0
22.0
1.53
0.354
23.67
3.43
3.00

NG
10.0
8.0
9.0
1.00
0.236
9.00
-1.65
-2.08

NH
16.0
11.0
13.0
2.52
0.591
13.33
-0.15
-0.58

NI








•
• = No data submitted

TAG SYMBOLS

11 = Above control limit
0 = Insufficient data
^	
x =
Determined to be an outlier
JJ. = Below control limit
	jj

-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-19»4 7 / 20
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
NJ








' •
NK
10.0
12.0
11.0
1.00
0.236
11.00
-0.95
-1.39

NO
12.0
15.0
18.0
3.00
0.709
15.00
0.43
0.00

NT
20.0
21.0
21.0
0.58
0.118
20.67
2.40
1.96

O
17.0
19.0
18.0
1.00
0.236
18.00
1.47
1.04

OA
10.0
10.0
10.0
0.00
0.000
10.00
-1.30
-1.73

OB
9.0
8.0
9.0
0.58
0.118
8.67
-1.76
-2.19

OF
14.0
15.0
16.0
1.00
0.236
15.00
0.43
0.00

OM









OS
13.0
13.0
11.0
1.15
0.236
12.33
-0.49
-0.92

OT








•
OX
11.0
13.0
18.0
3.61
0.827
14.00
0.09
-0.35

OY
16.0
17.0
16.0
0.58
0.118
16.33
0.89
0.46

P
12.0
7.0
16.0
4.51
1.120
11.67
-0.72
-1.15

PA









PB
20.0
19.0
20.0
0.58
0.118
19.67
2.05
1.62

PC









PD








, m-
PE
5.0
4.0
6.0
1.00
0.236
5.00
-3.03
-3.46

PG
12.0
10.0
11.0
1.00
0.236
11.00
-0.95
-1.39

PM
9.0
9.0
12.0
1.73
0.354
10.00
-1.30
-1.73

PP








•
PQ
10.0
10.0
9.0
0.58
0.118
9.67
-1.42
-1.85

PR
20.0
20.0
18.0
1.15
0.236
19.33
1.93
1.50

PT
8.0
11.0
13.0
2.52
0.591
10.67
-1.07
-1.50

PV
16.0
17.0
18.0
1.00
0.236
17.00
1.13
0.69

Q
12.0
13.0
14.0
1.00
0.236
13.00
-0.26
-0.69

QA
12.0
14.0
13.0
1.00
0.236
13.00
-0.26
-0.69

QB
8.0
10.0
9.0
1.00
0.236
9.00
-1.65
-2.08

QC
12.0
9.0
12.0
1.73
0.354
11.00
-0.95
-1.39

Ql
9.0
7.0
8.0
1.00
0.236
8.00
-1.99
-2.42

QJ
13.0
16.0
15.0
1.53
0.354
14.67
0.32
-0.12

QK









QM
4.0
5.0
5.0
0.58
0.118
4.67
-3.15
-3.58
U
QP
17.0
17.0
14.0
1.73
0.354
16.00
0.78
0.35

QQ
11.0
12.0
12.0
0.58
0.118
11.67
-0.72
-1.15

QT
13.0
13.0
14.0
0.58
0.118
13.33
-0.15
-0.58

QU
20.0
24.0
28.0
4.00
0.945
24.00
3.55
3.12
ir
QW
32.0
37.0
31.0
3.21
0.709
33.33
6.78
6.35
¦ X- •-
QX
11.0
9.0
9.0
1.15
0.236
9.67
-1.42
-1.85

QZ
12.0
12.0
12.0
0.00
0.000
12.00
-0.61
-1.04

R
16.0
19.0
14.0
2.52
0.591
16.33
0.89
0.46

RB
9.0
11.0
9.0
1.15
0.236
9.67
-1.42
-1.85

RC
7.0
10.0
6.0
2.08
0.473
7.67
-2.11
-2.54

RD








•
• =
l0s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1! s Above control limit
1L s Below control limit

-------
	








	x
8/20
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994

r
Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RE
10.0
12.0
13.0
1.53
0.354
11.67
-0.72
-1.15

RF








•
RG
9.0
9.0
9.0
0.00
0.000
9.00
-1.65
-2.08

RH
17.0
11.0
8.0
4.58
1.120
12.00
-0.61
-1.04

RI
12.0
12.0
11.0
0.58
0.118
11.67
-0.72
-1.15

RJ
13.0
13.0
13.0
0.00
0.000
13.00
-0.26
-0.69

RL








•
RM
19.0
19.0
23.0
2.31
0.473
20.33
2.28
1.85

RQ








•-
RR
13.0
14.0
14.0
0.58
0.118
13.67
-0.03
-0.46

RT








•
RU








•
RV
19.0
22.0
18.0
2.08
0.473
19.67
2.05
1.62

RW
8.0
10.0
12.0
2.00
0.473
10.00
-1.30
-1.73

RX








•
RZ
12.0
14.0
13.0
1.00
0.236
13.00
-0.26
-0.69

S
13.0
10.0
13.0
1.73
0.354
12.00
-0.61
-1.04

SA








•
sc
9.0
8.0
9.0
0.58
0.118
8.67
-1.76
-2.19

SD
12.0
13.0
12.0
0.58
0.118
12.33
-0.49
-0.92

SF
17.0
15.0
19.0
2.00
0.473
17.00
1.13
0.69

SG








•
SI
8.0
10.0
9.0
1.00
0.236
9.00
-1.65
-2.08

SL
14.0
11.0
15.0
2.08
0.473
13.33
-0.15
-0.58

SM
11.0
12.0
11.0
0.58
0.118
11.33
-0.84
-1.27

SN








•
SO
12.0
11.0
11.0
0.58
0.118
11.33
-0.84
-1.27

SR
13.0
11.0
14.0
1.53
0.354
12.67
-0.38
-0.81

ss
13.0
12.0
11.0
1.00
0.236
12.00
-0.61
-1.04

ST
13.0
13.0
13.0
0.00
0.000
13.00
-0.26
-0.69

su
8.0
14.0
8.0
3.46
0.709
10.00
-1.30
-1.73

sw
25.0
21.0
18.0
3.51
0.827
21.33
2.63
2.19

sx
19.0
21.0
20.0
1.00
0.236
20.00
2.16
1.73

sz
9.0
10.0
11.0
1.00
0.236
10.00
-1.30
-1.73

T
60.0
59.0
56.0
2.08
0.473
58.33
15.44
15.01
X
TA








•
TC
19.0
21.0
48.0
16.20
5.621
29.33
5.40
4.97
X
TD








•
TE
14.0
14.0
13.0
0.58
0.118
13.67
-0.03
-0.46

TG
15.0
15.0
15.0
0.00
0.000
15.00
0.43
0.00

TH
17.0
16.0
16.0
0.58
0.118
16.33
0.89
0.46

TI
13.0
12.0
14.0
1.00
0.236
13.00
-0.26
-0.69

TK
18.0
17.0
16.0
1.00
0.236
17.00
1.13
0.69

TL
14.0
15.0
15.0
0.58
0.118
14.67
0.32
-0.12

TN
10.0
11.0
13.0
1.53
0.354
11.33
-0.84
-1.27

• s No data submitted

TAG SYMBOLS

It = Above control limit
0 = Insufficient data
^	
x =
Determined to be an outlier
11 = Below control limit
	yj

-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994 9/20
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
TQ
17.0
14.0
13.0
2.08
0.473
14.67
0.32
-0.12
TV








TW
11.0
8.0
8.0
1.73
0.354
9.00
-1.65
-2.08
TY
10.0
11.0
11.0
0.58
0.118
10.67
-1.07
-1.50
U
22.0
21.0
24.0
1.53
0.354
22.33
2.97
2.54
UA
19.0
20.0
24.0
2.65
0.591
21.00
2.51
2.08
UE
14.0
14.0
11.0
1.73
0.354
13.00
-0.26
-0.69
UG
21.0
22.0
21.0
0.58
0.118
21.33
2.63
2.19
UI
27.0
22.0
18.0
4.51
1.120
22.33
2.97
2.54
UL
8.0
8.0
9.0
0.58
0.118
8.33
-1.88
-2.31
UN
9.0
8.0.
9.0
0.58
0.118
8.67
-1.76
-2.19
UP
11.0
12.0
12.0
0.58
0.118
11.67
-0.72
-1.15
UQ
13.0
13.0
12.0
0.58
0.118
12.67
-0.38
-0.81
UW








UY








UZ
6.0
7.0
10.0
2.08
0.473
7.67
-2.11
-2.54
VA








VC








VG
8.0
9.0
8.0
0.58
0.118
8.33
-1.88
-2.31
VH
9.0
15.0
12.0
3.00
0.709
12.00
-0.61
-1.04
VI








VJ
14.0
13.0
15.0
1.00
0.236
14.00
0.09
-0.35
VK








W
13.0
10.0
13.0
1.73
0.354
12.00
-0.61
-1.04
WA








X
Y
11.0
9.0
11.0
1.15
0.236
10.33
-1.18
-1.62
X
z
10.0
10.0
13.0
1.73
0.354
11.00
-0.95
-1.39
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
4.00
JJ
n
8.67

OB
9.67

PQ
4.67
U
QM
8.67

CX
9.67

HH
5.00

PE
9.00

TW
9.67

FJ
6.33

GJ
9.00

SI
9.67

AO
7.00

JE
9.00

RG
9.67

AN
7.67

UZ
9.00

QB
10.00

SZ
7.67

RC
9.00

NG
10.00

SU
8.00

Ql
9.00

JQ
10.00

RW
8.33

VG
9.33

MS
10.00

PM
8.33

UL
9.33

LR
10.00

OA
8.33

DP
9.33

LE
10.00

EO
8.33

DD
9.33

GQ
10.00

BI
8.67

UN
9.67

RB
10.33

X
8.67

sc
9.67

QX
10.33

MV
• s No data submitted
0 3 Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
It
U
3 Above control limit
s Below control limit

-------
10 / 20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
10.33

LT
13.00

ST
15.00

N
10.33

LF
13.00

RZ
15.00

GT
10.33

C
13.00

RJ
15.00

EL
10.67

TY
13.00

QA
15.00

D
10.67

PT
13.00

Q
15.00

BH
10.67

CO
13.00

KT
15.00

AR
11.00

Z
13.00

KH
15.33

MY
11.00

QC
13.00

JP
15.33

MQ
11.00

PG
13.00

DZ
15.33

DT
11.00

NK
13.00

DB
15.33

AU
11.00

HL
13.00

CS
15.67

HI
11.00

FN
13.00

CG
15.67

AP
11.00

BO
13.00

BK
16.00

QP
11.33

TN
13.00

BB
16.00

CK
11.33

SO
13.33

SL
16.33

TH
11.33

SM
13.33

QT
16.33

R
11.33

KC
13.33

NH
16.33

OY
11.33

EV
13.33

L
16.67

JG
11.33

ER
13.33

JY
16.67

DS
11.67

UP
13.33

JM
16.67

AW
11.67

RI
13.33

FF
17.00

TK
11.67

RE
13.33

BL
17.00

SF
11.67

QQ
13.33

A
17.00

PV
11.67

P
13.67

TE
17.00

K
12.00

w
13.67

RR
17.00

J
12.00

VH
13.67

KE
17.33

HE
12.00

ss
13.67

JN
18.00

O
12.00

s
13.67

HP
18.00

NB
12.00

RH
13.67

FE
18.33

BN
12.00

QZ
13.67

E
18.67

M
12.00

GZ
13.67

BA
18.67

HK
12.00

BM
14.00

VJ
18.67

CP
12.00

AL
14.00

OX
18.67

AE
12.33

SD
14.00

EN
19.00

IE
12.33

OS
14.00

AZ
19.33

PR
12.33

JS
14.33

EA
19.33

AJ
12.33

I
14.33

AF
19.67

RV
12.67

UQ
14.67

TQ
19.67

PB
12.67

SR
14.67

TL
19.67

IC
12.67

EH
14.67

QJ
19.67

FL
12.67

DX
14.67

CE
20.00

SX
12.67

DH
15.00

TG
20.00

LG
13.00

UE
15.00

OF
20.33

RM
13.00

TI
15.00

NO
20.33

CA
• = No data submitted
0 = Insufficient data

TAG SYMBOLS
x s Determined to be an outlier
IT
U
= Above control limit
s Below control limit

-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994 11/20
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
20.67

NT
21.67
BC
24.33
IT
KX
20.67

EB
22.33
UI
25.00
ft
CQ
21.00

UA
22.33
U
26.33
IT
AK
21.33

UG
22.67
DE
29.33
X
TC
21.33

SW
23.33
LL
29.33
X
HU
21.67

CJ
23.67
NE
33.33
X
QW
21.67

BG
24.00
ft QU
41.00
X
GO





58.33
X
T
% responding labs

Frequency distribution



10-
-2	0	+2
t"-
-2	0	+2
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
0	r
-6

IH.InTi-if..
0	+2
¦¦T —
-4	-2	0+2+4
Normalized deviation of the mean from the grand average
+6
• s No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	U = Below control limit J

-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994 12 / 20
Gross Beta
Statistical Summary
253 Participants
The known value of this nuclide is 62.0 pCi/1 with an expected precision of 10.0; the control limits
are 44.7 to 79.3; the warning regions are 44.7 to 50.4 and 73.6 to 79.3
51 (20.2 %) Failed to respond •„
130(51.4 %) Within all limits



41 (16.2 %) Out of control '

-- 29(11.5 %) In warning zone
but not an outlier
t
i i
but within control
Statistic
Respondents
Non-outliers
Mean
56.86
Grand Avg 56.14
Std. Dev.
15.85
14.15
Variance
251.07
200.24
% Coef. of Var.
27.87
25.21
% deviation of mean from known value
-8.29
-9.45
Norm. dev. of mean from known value
-0.32
-0.41
Median
57.67
57.67
% deviation of median from known value
-6.99
-6.99
Norm. dev. of median from known value
-0.27
-0.31
46(22.8 %) More than 3 norm. S.D. •
26(12.9 %) Between 2 and 3 norm. S.D
,76(37.6 %) Within 1 norm. S.D.
of known value
54(26.7 %) Between 1 and 2 norm. S.D.

-------
f, =
13/20
EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 28-Jan-1994
	^
Gross Beta







\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
64.0
66.0
67.0
1.53
0.177
65.67
1.65
0.64

AA








+
AE
58.0
56.0
56.0
1.15
0.118
56.67
0.09
-0.92

AF
45.0
41.0
43.0
2.00
0.236
43.00
-2.28
-3.29
li
AI








•
AJ
45.0
52.0
56.0
5.57
0.650
51.00
-0.89
-1.91

AK
58.0
60.0
59.0
1.00
0.118
59.00
0.50
-0.52

AL
46.0
47.0
50.0
2.08
0.236
47.67
-1.47
-2.48

AN
58.0
58.0
66.0
4.62
0.473
60.67
0.78
-0.23

AO
50.0
52.0
54.0
2.00
0.236
52.00
-0.72
-1.73

AP
58.0
54.0
55.0
2.08
0.236
55.67
-0.08
-1.10

AR
60.0
58.0
60.0
1.15
0.118
59.33
0.55
-0.46

AU
52.0
52.0
51.0
0.58
0.059
51.67
-0.77
-1.79

AW
53.0
54.0
51.0
1.53
0.177
52.67
-0.60
-1.62

AY








•
AZ
37.0
37.0
37.0
0.00
0.000
37.00
-3.32
-4.33
u
BA
62.0
64.0
65.0
1.53
0.177
63.67
1.30
0.29

BB
58.0
59.0
60.0
1.00
0.118
59.00
0.50
-0.52

BC
50.0
52.0
51.0
1.00
0.118
51.00
-0.89
-1.91

BG
48.0
43.0
44.0
2.65
0.295
45.00
-1.93
-2.94

BH
32.0
31.0
31.0
0.58
0.059
31.33
-4.30
-5.31
u
BI
66.0
71.0
64.0
3.61
0.413
67.00
1.88
0.87

BK
52.0
57.0
55.0
2.52
0.295
54.67
-0.26
-1.27

BL
66.0
66.0
65.0
0.58
0.059
65.67
1.65
0.64

BM
57.0
58.0
58.0
0.58
0.059
57.67
0.26
-0.75

BN
58.0
64.0
62.0
3.06
0.354
61.33
0.90
-0.12

BO
45.0
44.0
45.0
0.58
0.059
44.67
-1.99
-3.00

BW








•
C
65.0
64.0
63.0
1.00
0.118
64.00
1.36
0.35

CA
59.0
54.0
53.0
3.21
0.354
55.33
-0.14
-1.15

CE
48.0
52.0
56.0
4.00
0.473
52.00
-0.72
-1.73

CG
32.0
37.0
35.0
2.52
0.295
34.67
-3.72
-4.73
u
CJ
74.0
75.0
68.0
3.79
0.413
72.33
2.80
1.79

CK
29.0
73.0
63.0
23.07
4.046
55.00
-0.20
-1.21

CO
44.0
54.0
44.0
5.77
0.591
47.33
-1.53
-2.54

CP
73.0
79.0
76.0
3.00
0.354
76.00
3.44
2.42

CQ
69.0
66.0
67.0
1.53
0.177
67.33
1.94
0.92

CS
50.0
53.0
46.0
3.51
0.413
49.67
-1.12
-2.14

CX
44.0
47.0
43.0
2.08
0.236
44.67
-1.99
-3.00

D
59.0
58.0
60.0
1.00
0.118
59.00
0.50
-0.52

DB
46.0
43.0
49.0
3.00
0.354
46.00
-1.76
-2.77

DD
57.0
59.0
60.0
1.53
0.177
58.67
0.44
-0.58

DE
60.0
61.0
62.0
1.00
0.118
61.00
0.84
-0.17

DG








6
DH
58.0
49.0
53.0
4.51
0.532
53.33
-0.49
-1.50

• s No data submitted

TAG SYMBOLS

IT = Above control limit
[ 0 = Insufficient data
x =
Determined to be an outlier
U = Below control limit
	0

-------
— 		
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994 14/20
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
DI








•
DJ








•
DM
53.0
54.0
55.0
1.00
0.118
54.00
-0.37
-1.39

DO








• -
DP
58.0
58.0
57.0
0.58
0.059
57.67
0.26
-0.75

DE
70.0
69.0
64.0
3.21
0.354
67.67
2.00
0.98

DS
68.0
83.0
71.0
7.94
0.886
74.00
3.09
2.08

DT
60.0
61.0
58.0
1.53
0.177
59.67
0.61
-0.40

DX
78.0
80.0
77.0
1.53
0.177
78.33
3.84
2.83

DZ
57.0
59.0
61.0
2.00
0.236
59.00
0.50
-0.52

E
64.0
64.0
66.0
1.15
0.118
64.67
1.48
0.46

EA
56.0
54.0
55.0
1.00
0.118
55.00
-0.20
-1.21

EB
57.0
59.0
59.0
1.15
0.118
58.33
0.38
-0.64

EH
68.0
66.0
65.0
1.53
0.177
66.33
1.77
0.75

EL
74.0
71.0
69.0
2.52
0.295
71.33
2.63
1.62

EN
44.0
41.0
45.0
2.08
0.236
43.33
-2.22 .
-3.23

EO
60.0
60.0
59.0
0.58
0.059
59.67
0.61
-0.40

EB








-• -
ES








•
EV
59.0
42.0
44.0
9.29
1.008
48.33
-1.35
-2.37

EW
61.0
29.0
40.0
16.26
2.695
43.33
-2.22
-3.23
u
FE
51.0
50.0
47.0
2.08
0.236
49.33
-1.18
-2.19

FF
38.0
40.0
42.0
2.00
0.236
40.00
-2.80
-3.81
IL
FJ
86.0
100.0
113.0
13.50
2.133
99.67
7.54
6.52
IT
FK








•
FL
70.0
70.0
70.0
0.00
0.000
70.00
2.40
1.39

FN
62.0
60.0
57.0
2.52
0.295
59.67
0.61
-0.40

FP








•
FU








•
FZ








. m. <
GE
68.0
68.0
68.0
0.00
0.000
68.00
2.05
1.04

GJ
18.0
24.0
30.0
6.00
0.709
24.00
-5.57
-6.58
U
GO
43.0
48.0
42.0
3.21
0.354
44.33
-2.04
-3.06

GQ
44.0
44.0
45.0
0.58
0.059
44.33
-2.04
-3.06
#
GT
59.0
58.0
60.0
1.00
0.118
59.00
0.50
-0.52

GZ
72.0
74.0
72.0
1.15
0.118
72.67
2.86
1.85

HE
58.0
63.0
60.0
2.52
0.295
60.33
0.73
-0.29

HH
55.0
56.0
54.0
1.00
0.118
55.00
-0.20
-1.21

HI
59.0
49.0
59.0
5.77
0.591
55.67
-0.08
-1.10

HK
69.0
68.0
65.0
2.08
0.236
67.33
1.94
0.92

HL
56.0
56.0
56.0
0.00
0.000
56.00
-0.02
-1.04

HP
60.0
54.0
70.0
8.08
0.945
61.33
0.90
-0.12

HU
38.0
37.0
37.0
0.58
0.059
37.33
-3.26
-4.27

I
48.0
59.0
59.0
6.35
0.650
55.33
-0.14
-1.15

IC
64.0
78.0
65.0
7.81
0.827
69.00
2.23
1.21

• a No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
= Below control limit
IS

-------
(, —
15/20
EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 28-Jan-1984
	^
Gross Beta







"N
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
IE
38.0
48.0
34.0
7.21
0.827
40.00
-2.80
-3.81
a
II
11.0
11.0
13.0
1.15
0.118
11.67
-7.70
-8.72
u
ru








•
j
64.0
62.0
60.0
2.00
0.236
62.00
1.01
0.00

JE
53.0
52.0
42.0
6.08
0.650
49.00
-1.24
-2.25

JG
63.0
60.0
68.0
4.04
0.473
63.67
1.30
0.29

JH








•
JM
75.0
71.0
74.0
2.08
0.236
73.33
2.98
1.96

JN
59.0
51.0
57.0
4.16
0.473
55.67
-0.08
-1.10

JP
57.0
59.0
59.0
1.15
0.118
58.33
0.38
-0.64

JQ








•
JS
56.0
55.0
53.0
1.53
0.177
54.67
-0.26
-1.27

JY
37.0
60.0
52.0
11.68
1.683
49.67
-1.12
-2.14

K
54.0
60.0
58.0
3.06
0.354
57.33
0.21
-0.81

KC
21.0
22.0
20.0
1.00
0.118
21.00
-6.09
-7.10

KE
61.0
63.0
61.0
1.15
0.118
61.67
0.96
-0.06

KF








•
KH
51.0
59.0
61.0
5.29
0.591
57.00
0.15
-0.87

KT
35.0
38.0
35.0
1.73
0.177
36.00
-3.49
-4.50
u
KX
64.0
56.0
62.0
4.16
0.473
60.67
0.78
-0.23

L
67.0
63.0
58.0
4.51
0.532
62.67
1.13
0.12

T.F.
33.0
49.0
56.0
11.79
1.683
46.00
-1.76
-2.77

LF
28.0
26.0
19.0
4.73
0.532
24.33
-5.51
-6.52
u
LG
67.0
67.0
69.0
1.15
0.118
67.67
2.00
0.98

LL
66.0
68.0
69.0
1.53
0.177
67.67
2.00
0.98

LM








• -
LR
70.0
74.0
68.0
3.06
0.354
70.67
2.52
1.50

LS








•
LT
51.0
51.0
53.0
1.15
0.118
51.67
-0.77
-1.79

LZ








•
M
39.0
39.0
38.0
0.58
0.059
38.67
-3.03
-4.04
li
MA
27.0
29.0
23.0
3.06
0.354
26.33
-5.16
-6.18

MN








• '
MQ
65.0
60.0
66.0
3.21
0.354
63.67
1.30
0.29

MS
45.0
44.0
48.0
2.08
0.236
45.67
-1.81
-2.83

MV
35.0
34.0
34.0
0.58
0.059
34.33
-3.78
-4.79

MX








•
MY
139.0
138.0
139.0
.0.68
0.069
138.67
14.29
13.28
X
N
63.0
64.0
65.0
1.00
0.118
64.00
1.36
0.35

NA








•
NB
32.0
22.0
30.0
5.29
0.591
28.00
-4.87
-5.89
li
NE
19.0
20.0
17.0
1.53
0.177
18.67
-6.49
-7.51
u
NG
45.0
56.0
54.0
5.86
0.650
51.67
-0.77
-1.79

NH
75.0
65.0
73.0
5.29
0.591
71.00
2.57
1.56

NI








o
• = No data submitted

TAG SYMBOLS

IT s Above control limit
\
-------
(?	
	^
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994 16 / 20
Gross Beta







)
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand- avg)
(known) Tag
NJ








•
NK
58.0
58.0
61.0
1.73
0.177
59.00
0.50
-0.52

NO
58.0
60.0
62.0
2.00
0.236
60.00
0.67
-0.35

NT
41.0
41.0
41.0
0.00
0.000
41.00
-2.62
-3.64
li
O
67.0
64.0
62.0
2.52
0.295
64.33
1.42
0.40

OA
53.0
41.0
50.0
6.24
0.709
48.00
-1.41
-2.42

OB
44.0
45.0
50.0
3.21
0.354
46.33
-1.70
-2.71

OF
57.0
58.0
64.0
3.79
0.413
59.67
0.61
-0.40

OM








m
OS
60.0
63.0
58.0
2.52
0.295
60.33
0.73
-0.29

OT








9
OX
52.0
51.0
52.0
0.58
0.059
51.67
-0.77
-1.79

OY
56.0
58.0
59.0
1.53
0.177
57.67
0.26
-0.75

P
34.0
28.0
38.0
5.03
0.591
33.33
-3.95
-4.97
li
PA








•
PB
52.0
54.0
53.0
1.00
0.118
53.00
-0.54
-1.56

PC








•
PD








m
PE
74.0
75.0
78.0
2.08
0.236
75.67
3.38
2.37

PG
54.0
53.0
56.0
1.53
0.177
54.33
-0.31
-1.33

PM
52.0
58.0
58.0
3.46
0.354
56.00
-0.02
-1.04

PP








•
PQ
64.0
64.0
65.0
0.58
0.059
64.33
1.42
0.40

PR
53.0
53.0
49.0
2.31
0.236
51.67
-0.77
-1.79

PT
59.0
58.0
64.0
3.21
0.354
60.33
0.73
-0.29

PV
42.0
42.0
45.0
1.73
0.177
43.00
-2.28
-3.29

Q
68.0
70.0
73.0
2.52
0.295
70.33
2.46
1.44

QA
69.0
70.0
71.0
1.00
0.118
70.00
2.40
1.39

QB
51.0
56.0
51.0
2.89
0.295
52.67
-0.60
-1.62

QC
59.0
51.0
53.0
4.16
0.473
54.33
-0.31
-1.33

QI
23.0
23.0
24.0
0.58
0.059
23.33
-5.68
-6.70
u
QJ
67.0
72.0
70.0
2.52
0.295
69.67
2.34
1.33

QK
65.0
58.0
69.0
5.57
0.650
64.00
1.36
0.35

QM
52.0
49.0
38.0
7.37
0.827
46.33
-1.70
-2.71

QP
55.0
51.0
58.0
3.51
0.413
54.67
-0.26
-1.27

QQ
65.0
65.0
63.0
1.15
0.118
64.33
1.42
0.40

QT
59.0
57.0
59.0
1.15
0.118
58.33
0.38
-0.64

QU
55.0
60.0
63.0
4.04
0.473
59.33
0.55
-0.46

QW
62.0
57.0
54.0
4.04
0.473
57.67
0.26
-0.75

QX
61.0
61.0
60.0
0.58
0.059
60.67
0.78
-0.23

QZ
81.0
80.0
79.0
1.00
0.118
80.00
4.13
3.12
ir
R
65.0
68.0
62.0
3.00
0.354
65.00
1.53
0.52

RB
59.0
51.0
51.0
4.62
0.473
53.67
-0.43
-1.44

RC
67.0
65.0
62.0
2.52
0.295
64.67
1.48
0.46

RD








•
• =
No data submitted

TAG SYMBOLS

1! = Above control limit
in
Q
Insufficient data
x =
Determined to be an outlier
= Below control limit
	'J
-------
ft	 -
17/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994
V
	^
Gross Beta








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RE
63.0
64.0
70.0
3.79
0.413
65.67
1.65
0.64

RF








*
RG
26.0
28.0
29.0
1.53
0.177
27.67
-4.93
-5.95
J]
RH
70.0
72.0
72.0
1.15
0.118
71.33
2.63
1.62

RI
60.0
69.0
66.0
4.58
0.532
65.00
1.53
0.52

RJ
55.0
57.0
57.0
1.15
0.118
56.33
0.03
-0.98

RL








»
RM
63.0
66.0
60.0
3.00
0.354
63.00
1.19
0.17

RQ








•
RR
68.0
62.0
58.0
5.03
0.591
62.67
1.13
0.12

RT








•
RU








*
RV
55.0
59.0
49.0
5.03
0.591
54.33
-0.31
-1.33

RW
39.0
41.0
53.0
7.57
0.827
44.33
-2.04
-3.06
U
RX








9
RZ
81.0
86.0
87.0
3.21
0.354
84.67
4.94
3.93
ft
S
69.0
72.0
70.0
1.53
0.177
70.33
2.46
1.44

SA








•
SC
63.0
56.0
63.0
4.04
0.413
60.67
0.78
-0.23

SD
52.0
46.0
53.0
3.79
0.413
50.33
-1.01
-2.02

SF
63.0
50.0
80.0
15.04
2.470
64.33
1.42
0.40

SG








•
SI
41.0
44.0
41.0
1.73
0.177
42.00
-2.45
-3.46
U
SL
93.0
94.0
89.0
2.65
0.295
92.00
6.21
5.20
ft
SM
73.0
72.0
73.0
0.58
0.059
72.67
2.86
1.85

SN








•
SO
39.0
43.0
38.0
2.65
0.295
40.00
-2.80
-3.81
u
SR
53.0
25.0
39.0
14.00
2.245
39.00
-2.97
-3.98
u
ss
66.0
67.0
65.0
1.00
0.118
66.00
1.71
0.69

ST
42.0
37.0
35.0
3.61
0.413
38.00
-3.14
-4.16
u
SU
52.0
56.0
55.0
2.08
0.236
54.33
-0.31
-1.33

SW
81.0
83.0
70.0
7.00
0.768
78.00
3.79
2.77

SX
48.0
43.0
45.0
2.52
0.295
45.33
-1.87
-2.89

sz
60.0
55.0
58.0
2.52
0.295
57.67
0.26
-0.75

T
19.0
20.0
21.0
1.00
0.118
20.00
-6.26
-7.27
u
TA








«
TC
144.0
75.0
137.0
37.98
6.858
118.67
10.83
9.81
X
TD








•
TE
62.0
57.0
62.0
2.89
0.295
60.33
0.73
-0.29

TG
25.0
29.0
34.0
4.51
0.532
29.33
-4.64
-5.66

TH
50.0
59.0
46.0
6.66
0.768
51.67
-0.77
-1.79

n
76.0
73.0
70.0
3.00
0.354
73.00
2.92
1.91

TK
70.0
75.0
82.0
6.03
0.709
75.67
3.38
2.37

TL
70.0
67.0
61.0
4.58
0.532
66.00
1.71
0.69

TN
67.0
76.0
76.0
5.20
0.532
73.00
2.92
1.91

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
^	
Insufficient data
x =
Determined to be an outlier
U- = Below control limit
	V
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994 18/20
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
TQ
67.0
58.0
66.0
4.93
0.532
63.67
1.30
0.29
TV








TW
62.0
53.0
56.0
4.58
0.532
57.00
0.15
-0.87
TY
52.0
50.0
43.0
4.73
0.532
48.33
-1.35
-2.37
U
62.0
64.0
64.0
1.15
0.118
63.33
1.25
0.23
UA
75.0
83.0
80.0
4.04
0.473
79.33
4.02
3.00
UE
70.0
65.0
64.0
3.21
0.354
66.33
1.77
0.75
UG
75.0
76.0
76.0
0.58
0.059
75.67
3.38
2.37
UI
25.0
23.0
23.0
1.15
0.118
23.67
-5.62
-6.64
UL
59.0
52.0
58.0
3.79
0.413
56.33
0.03
-0.98
UN
45.0
41.0
40.0
2.65
0.295
42.00
-2.45
-3.46
UP
65.0
68.0
68.0
1.73
0.177
67.00
1.88
0.87
UQ
71.0
70.0
71.0
0.58
0.059
70.67
2.52
1.50
UW








UY
46.0
50.0
62.0
8.33
0.945
52.67
-0.60
-1.62
UZ
134.0
89.0
80.0
28.93
5.171
101.00
7.77
6.75
VA








VC








VG
53.0
54.0
52.0
1.00
0.118
53.00
-0.54
-1.56
VH
70.0
83.0
68.0
8.14
0.886
73.67
3.04
2.02
VI








VJ
51.0
54.0
55.0
2.08
0.236
53.33
-0.49
-1.50
VK








W
66.0
64.0
53.0
7.00
0.768
61.00
0.84
0.17
WA








X
47.0
49.0
48.0
1.00
0.118
48.00
-1.41
-2.42
Y
40.0
41.0
34.0
3.79
0.413
38.33
-3.08
-4.10
Z
61.0
72.0
70.0
5.86
0.650
67.67
2.00
0.98
Data sorted by Laboratory Average
Average
Ta
-------
19 / 20 EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 28-Jan-1994
	^
Gross Beta






\

Data sorted by Laboratory Averag
fe


Average Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
46.00
DB
55.33

CA
61.33

HP
46.33
QM
55.67

JN
61.33

BN
46.33
OB
55.67

HI
61.67

KE
47.33
CO
55.67

AP
62.00

J
47.67
AL
56.00

PM
62.67

RR
48.00
X
56.00

HL
62.67

L
48.00
OA
56.33

UL
63.00

RM
48.33
TY
56.33

RJ
63.33

U
48.33
EV
56.67

AE
63.67

TQ
49.00
JE
57.00

TW
63.67

MQ
49.33
FE
57.00

KH
63.67

JG
49.67
JY
57.33

K
63.67

BA
49.67
CS
57.67

SZ
64.00

QK
50.33
SD
57.67

QW
64.00

N
51.00
BC
57.67

OY
64.00

C
51.00
AJ
57.67

DP
64.33

SF
51.67
TH
57.67

BM
64.33

QQ
51.67
PR
58.33

QT
64.33

PQ
51.67
OX
58.33

JP
64.33

O
51.67
NG
58.33

EB
64.67

RC
51.67
LT
58.67

DD
64.67

E
51.67
AU
59.00

NK
65.00

RI
52.00
CE
59.00

GT
65.00

R
52.00
AO
59.00

DZ
65.67

RE
52.67
UY
59.00

D
65.67

BL
52.67
QB
59.00

BB
65.67

A
52.67
AW
59.00

AK
66.00

TL
53.00
VG
59.33

QU
66.00

SS
53.00
PB
59.33

AR
66.33

UE
53.33
VJ
59.67

OF
66.33

EH
53.33
DH
59.67

FN
67.00

UP
53.67
RB
59.67

EO
67.00

BI
54.00
DM
59.67

DT
67.33

HK
54.33
SU
60.00

NO
67.33

CQ
54.33
RV
60.33

TE
67.67

Z
54.33
QC
60.33

PT
67.67

LL
54.33
PG
60.33

OS
67.67

LG
54.67
QP
60.33

HE
67.67

DR
54.67
JS
60.67

SC
68.00

GE
54.67
BK
60.67

QX
69.00

IC
55.00
HH
60.67

KX
69.67

QJ
55.00
EA
60.67

AN
70.00

QA
55.00
CK
61.00

W
70.00

FL
55.33
I
61.00

DE
70.33

S
• s No data submitted

TAG SYMBOLS

IT
ee Above control limit
0 = Insufficient data
^	

x = Determined to be an outlier
U
s Below control limit
			yj
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Jan-1994 20 / 20
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
70.33

Q
73.00

TN
78.00

SW
70.67

UQ
73.00

TT
78.33

DX
70.67

LR
73.33

JM
79.33

UA
71.00

NH
73.67

VH
80.00
It
QZ
71.33

RH
74.00

DS
84.67
ft
RZ
71.33

EL
75.67

UG
92.00
ft
SL
72.33

CJ
75.67

TK
99.67
ft
FJ
72.67

SM
75.67

PE
101.00
ft
UZ
72.67

GZ
76.00

CP
118.67
138.67
X
X
TC
MY
% responding labs
Frequency distribution
T-—¥'

¦¦fa
-6
% responding labs
-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
+4
T"
+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 s Insufficient data	x == Determined to be an outlier	U = Below control limit
-------
United States	Environmental Monitoring	EPA 600/R-94/056
Environmental Protection	Systems Laboratory	MftMatoac 9SB
Agency	PO Box 93478	februanj l99
-------
Iodine in Water
Performance Evaluation Study
February 4, 1994
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 Iodine In Water; February 4, 1994.
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.
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.
-------
fe
EMSL-LV Performance Evaluation: Iodine in Water, 4-Feb-1994	1/8
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 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.
-------
2/8	EMSL-LV Performance Evaluation: Iodine in Water, 4-Feb-1994
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, 4-Feb-1994	3/8
Iodine-131	Statistical Summary	134 Participants
The known value of this nuclide is 119.0 pCi/1 with an expected precision of 12.0; the control limits
are 98.2 to 139.8; the warning regions are 98.2 to 105.1 and 132.9 to 139.8
Statistic	Respondents	Non-outliers
Mean
120.83
Grand Avg 120.99
Std. Dev.
14.18
10.18
Variance
201.14
103.61
% Coef. of Var.
11.74
8.41
% deviation of mean from known value
1.54
1.67
Norm. dev. of mean from known value
0.13
0.20
Median
120.67
120.67
% deviation of median from known value
1.40
1.40
Norm. dev. of median from known value
0.12
0.16
-------
(f	
4/8
\

EMSL-LV Performance Evaluation: Iodine
in Water,
4-Feb-1994
	
Iodine-131







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
111.0
114.0
107.0
3.51
0.345
110.67
-1.49
-1.20
AF
124.0
125.0
124.0
0.58
0.049
124.33
0.48
0.77
AI
131.0
120.0
118.0
7.00
0.640
123.00
0.29
0.58
AJ
117.0
122.0
119.0
2.52
0.246
119.33
-0.24
0.05
AK
126.0
126.0
127.0
0.58
0.049
126.33
0.77
1.06
AL
126.0
131.0
127.0
2.65
0.246
128.00
1.01
1.30
AN
124.0
125.0
124.0
0.58
0.049
124.33
0.48
0.77
AP
117.0
118.0
119.0
1.00
0.098
118.00
-0.43
-0.14
AU
116.0
117.0
130.0
7.81
0.689
121.00
0.00
0.29
AW
100.0
101.0
101.0
0.58
0.049
100.67
-2.93
-2.65
AY







•
AZ
131.0
137.0
132.0
3.21
0.295
133.33
1.78
2.07
BA
119.0
125.0
119.0
3.46
0.295
121.00
0.00
0.29
BC
142.0
140.0
130.0
6.43
0.591
137.33
2.36
2.65
BH
119.0
120.0
119.0
0.58
0.049
119.33
-0.24
0.05
BL
120.0
122.0
121.0
1.00
0.098
121.00
0.00
0.29
BM
120.0
124.0
125.0
2.65
0.246
123.00
0.29
0.58
BO
114.0
116.0
117.0
1.53
0.148
115.67
-0.77
-0.48
BW







•
C
116.0
116.0
117.0
0.58
0.049
116.33
-0.67
-0.38
CA
107.0
112.0
111.0
2.65
0.246
110.00
-1.59
-1.30
CE
126.0
126.0
130.0
2.31
0.197
127.33
0.92
1.20
CJ
110.0
110.0
110.0
0.00
0.000
110.00
-1.59
-1.30
CP
125.0
123.0
122.0
1.53
0.148
123.33
0.34
0.63
CQ
126.0
120.0
123.0
3.00
0.295
123.00
0.29
0.58
cx
118.0
122.0
124.0
3.06
0.295
121.33
0.05
0.34
D
111.0
125.0
115.0
7.21
0.689
117.00
-0.58
-0.29
DD
131.0
136.0
134.0
2.52
0.246
133.67
1.83
2.12
DE
118.0
119.0
120.0
1.00
0.098
119.00
-0.29
0.00
DJ







•-
DL
118.0
120.0
119.0
1.00
0.098
119.00
-0.29
0.00
DM
119.0
119.0
121.0
1.15
0.098
119.67
-0.19
0.10
DR
126.0
124.0
124.0
1.15
0.098
124.67
0.53
0.82
DT
131.0
126.0
125.0
3.21
0.295
127.33
0.92
1.20
DY
126.0
123.0
123.0
1.73
0.148
124.00
0.43
0.72
E
118.0
118.0
115.0
1.73
0.148
117.00
-0.58
-0.29
EB
116.0
120.0
123.0
3.51
0.345
119.67
-0.19
0.10
EH
131.0
143.0
137.0
6.00
0.591
137.00
2.31
2.60
EL
125.0
122.0
118.0
3.51
0.345
121.67
0.10
0.38
EX
119.0
122.0
120.0
1.53
0.148
120.33
-0.09
0.19
EZ
120.0
124.0
119.0
2.65
0.246
121.00
0.00
0.29
FE
110.0
125.0
107.0
9.64
0.886
114.00
-1.01
-0.72
FK
134.0
163.0
148.0
14.50
1.814
148.33
3.95
4.23 It
FL
123.0
125.0
122.0
1.53
0.148
123.33
0.34
0.63
FU
117.0
119.0
120.0
1.53
0.148
118.67
-0.34
-0.05
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 -
^	
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
	-V
-------
EMSL-LV Performance Evaluation: Iodine in Water, 4-Feb-1994	5 / 8
r
Iodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
GE
120.0
118.0
119.0
1.00
0.098
119.00
-0.29
0.00
GI
111.0
116.0
113.0
2.52
0.246
113.33
-1.10
-0.82
HE
113.0
114.0
118.0
2.65
0.246
115.00
-0.86
-0.58
HJ
125.0
120.0
129.0
4.51
0.443
124.67
0.53
0.82
HK
119.0
119.0
106.0
7.51
0.640
114.67
-0.91
-0.63
HP
135.0
135.0
135.0
0.00
0.000
135.00
2.02
2.31
HU
115.0
115.0
114.0
0.58
0.049
114.67
-0.91
-0.63
HX
87.0
88.0
90.0
1.53
0.148
88.33
-4.71
-4.43 U
I
115.0
117.0
115.0
1.15
0.098
115.67
-0.77
-0.48
IA







«
IC
131.0
124.0
125.0
3.79
0.345
126.67
0.82
1.11
IU
121.0
121.0
120.0
0.58
0.049
120.67
-0.05
0.24
J
121.0
125.0
123.0
2.00
0.197
123.00
0.29
0.58
JR
147.0
152.0
160.0
6.56
0.640
153.00
4.62
4.91 It
JS
126.0
132.0
154.0
14.74
1.720
137.33
2.36
2.65
JY
104.0
107.0
106.0
1.53
0.148
105.67
-2.21
-1.92
K
131.0
130.0
134.0
2.08
0.197
131.67
1.54
1.83
KL
127.0
124.0
122.0
2.52
0.246
124.33
0.48
0.77
KM
106.0
113.0
109.0
3.51
0.345
109.33
-1.68
-1.40
KX







•<
L
106.0
104.0
111.0
3.61
0.345
107.00
-2.02
-1.73
LA







• '
LF
120.0
120.0
130.0
5.77
0.492
123.33
0.34
0.63
LT








M
110.0
119.0
122.0
6.24
0.591
117.00
-0.58
-0.29
MA
117.0
119.0
122.0
2.52
0.246
119.33
-0.24
0.05
MN
120.0
115.0
110.0
5.00
0.492
115.00
-0.86
-0.58
MP







. •
MQ
118.0
116.0
118.0
1.15
0.098
117.33
-0.53
-0.24
MS







•
MV
122.0
123.0
123.0
0.58
0.049
122.67
0.24
0.53
N
124.0
125.0
124.0
0.58
0.049
124.33
0.48
0.77
NJ
117.0
120.0
120.0
1.73
0.148
119.00
-0.29
0.00
NZ
97.0
91.0
86.0
5.51
0.541
91.33
-4.28
-3.99 U
O
121.0
121.0
121.0
0.00
0.000
121.00
0.00
0.29
OA
120.0
122.0
117.0
2.52
0.246
119.67
-0.19
0.10
OB
127.0
129.0
124.0
2.52
0.246
126.67
0.82
1.11
OL







•
OT
163.0
115.0
140.0
24.01
3.596
139.33
2.65
2.93
PB
125.0
124.0
125.0
0.58
0.049
124.67
0.53
0.82
PC
87.0
89.0
92.0
2.52
0.246
89.33
-4.57
-4.28 \i
PE
116.0
127.0
123.0
5.57
0.541
122.00
0.15
0.43
PT
138.0
135.0
122.0
8.50
0.788
131.67
1.54
1.83
PV
127.0
139.0
140.0
7.23
0.640
135.33
2.07
2.36
PW
151.0
105.0
123.0
23.18
3.408
126.33
0.77
1.06
• =
0 a
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
•U s Below control limit

-------
6/8	EMSL-LV Performance Evaluation: Iodine in Water,
4-Feb-1994
Iodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
Q
118.0
121.0
114.0
3.51
0.345
117.67
-0.48
6
h-4
CO

QB
117.0
130.0
139.0
11.06
1.158
128.67
1.11
1.40

QJ
116.0
118.0
123.0
3.61
0.345
119.00
-0.29
0.00

QK
121.0
120.0
120.0
0.58
0.049
120.33
-0.09
0.19

QL
120.0
112.0
118.0
4.16
0.394
116.67
-0.62
-0.34

QU
32.0
33.0
44.0
6.66
0.591
36.33
<12.22
-11.93
X
QX
145.0
145.0
145.0
0.00
0.000
145.00
3.47
3.75
rr
R
116.0
116.0
113.0
1.73
0.148
115.00
-0.86
-0.58

RC








•
RL








•
RM
111.0
104.0
107.0
3.51
0.345
107.33
-1.97
-1.68

RQ








*
S
125.0
117.0
119.0
4.16
0.394
120.33
-0.09
0.19

sc
117.0
112.0
115.0
2.52
0.246
114.67
-0.91
-0.63

SF
106.0
99.0
108.0
4.73
0.443
104.33
-2.40
-2.12

SK








•
SM
110.0
108.0
106.0
2.00
0.197
108.00
-1.87
-1.59

ss
122.0
123.0
119.0
2.08
0.197
121.33
0.05
0.34

sw
164.0
196.0
201.0
20.07
2.564
187.00
9.53
9.81
X
sz
133.0
127.0
130.0
3.00
0.295
130.00
1.30
1.59

TA
128.0
127.0
150.0
13.00
1.252
135.00
2.02
2.31

TC
139.0
131.0
128.0
5.69
0.541
132.67
1.69
1.97

TD
120.0
117.0
116.0
2.08
0.197
117.67
-0.48
-0.19

TE
118.0
119.0
124.0
3.21
0.295
120.33
-0.09
0.19

TG
122.0
123.0
121.0
1.00
0.098
122.00
0.15
0.43

TH
127.0
128.0
128.0
0.58
0.049
127.67
0.96
1.25

ti
119.0
116.0
120.0
2.08
0.197
118.33
-0.38
-0.10

TL
144.0
123.0
125.0
11.59
1.064
130.67
1.40
1.68

TQ
117.0
125.0
117.0
4.62
0.394
119.67
-0.19
0.10

TV








ft
U
126.0
122.0
139.0
8.89
0.837
129.00
1.16
1.44

UE
132.0
135.0
137.0
2.52
0.246
134.67
1.97
2.26

UI
94.0
98.0
99.0
2.65
0.246
97.00
-3.46
-3.18
4
UN
126.0
113.0
121.0
6.56
0.640
120.00
-0.14
0.14

UP
120.0
122.0
123.0
1.53
0.148
121.67
0.10
0.38

uw
118.0
124.0
125.0
3.79
0.345
122.33
0.19
0.48

UY
116.0
122.0
121.0
3.21
0.295
119.67
-0.19
0.10

VA








e
VC








• -
VG
115.0
118.0
120.0
2.52
0.246
117.67
-0.48
-0.19

W
118.0
114.0
116.0
2.00
0.197
116.00
-0.72
-0.43

X
112.0
114.0
118.0
3.06
0.295
114.67
-0.91
-0.63

Y
114.0
121.0
121.0
4.04
0.345
118.67
-0.34
-0.05

Z
124.0
122.0
122.0
1.15
0.098
122.67
0.24
0.53

• = No data submitted TAG SYMBOLS ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	II = Below control limit
-------
EMSL-LV Performance Evaluation: Iodine in Water, 4-Feb-1994	7/8
v		
Iodine-131	~
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Taj?
Lab
Average
Tag
Lab
36.33
X
QU
118.67

FU
123.33

FL
88.33
U
HX
119.00

QJ
123.33

CP
89.33
u
PC
119.00

NJ
124.00

DY
91.33
u
NZ
119.00

GE
124.33

N
97.00
u
UI
119.00

DL
124.33

KL
100.67

AW
119.00

DE
124.33

AN
104.33

SF
119.33

MA
124.33

AF
105.67

JY
119.33

BH
124.67

PB
107.00

L
119.33

AJ
124.67

HJ
107.33

RM
119.67

UY
124.67

DR
108.00

SM
119.67

TQ
126.33

PW
109.33

KM
119.67

OA
126.33

AK
110.00

CJ
119.67

EB
126.67

OB
110.00

CA
119.67

DM
126.67

IC
110.67

A
120.00

UN
127.33

DT
113.33

GI
120.33

TE
127.33

CE
114.00

FE
120.33

S
127.67

TH
114.67

X
120.33

QK
128.00

AL
114.67

sc
120.33

EX
128.67

QB
114.67

HU
120.67

IU
129.00

U
114.67

HK
121.00

O
130.00

sz
115.00

R
121.00

EZ
130.67

TL
115.00

MN
121.00

BL
131.67

PT
115.00

HE
121.00

BA
131.67

K
115.67

I
121.00

AU
132.67

TC
115.67

BO
121.33

ss
133.33

AZ
116.00

W
121.33

cx
133.67

DD
116.33

C
121.67

UP
134.67

UE
116.67

QL
121.67

EL
135.00

TA
117.00

M
122.00

TG
135.00

HP
117.00

E
122.00

PE
135.33

PV
117.00

D
122.33

UW
137.00

EH
117.33

MQ
122.67

Z
137.33

JS
117.67

VG
122.67

MV
137.33

BC
117.67

TD
123.00

J
139.33

OT
117.67

Q
123.00

CQ
145.00
ft
QX
118.00

AP
123.00

BM
148.33
ft
FK
118.33

TT
123.00

AI
153.00
ft
JR
118.67

Y
123.33

LF
187.00
X
SW
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
IT
Above control limit
Below control limit
i Sj
-------
8/8
EMSL-LV Performance Evaluation: Iodine in Water, 4-Feb-1994
Iodine-131
% responding labs	Frequency distribution
10-
¦ hi|lmTi.
»[	t —t	—, ~ —y—B ^y	— ^ —	j
-6	-4	"2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
0

-6	-4	"2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
United States	Otfice of Research and	EPA/6Q0/'R-3
-------
Uranium-Radium in Water
Performance Evaluation Study
February 11, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
o
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 11, 1994.
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.
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, ll-Feb-1994 1/23
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.
-------
			 —
2/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 1 l-Feb-1994
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: Uranium-Radium in Water, ll-Feb-1994 3/23
Uranium (Natural)
Statistical Summary
198 Participants
The known value of this nuclide is 10.1 pCi/1 with an expected precision of 3.0; the control limits
are 4.9 to 15.3; the warning regions are 4.9 to 6.6 and 13.6 to 15.3
57(28.8 %) Failed to respond
120(60.6 %) Within all limits



4(2.0 %) Out of control •*'

4(2.0 %) In warning zone
but not an outlier ^^CTT-r~r--_
i i
but within control
Statistic
Respondents
Non-outliers
Mean
9.92
Grand Avg 0.64
Std. Dev.
3.75
1.70
Variance
14.09
2.90
% Coef. of Var.
37.85
17.65
% deviation of mean from known value
-1.80
-4.54
Norm. dev. of mean from known value
-0.05
-0.27
Median
9.90
9.88
% deviation of median from known value
-1.98
-2.15
Norm. dev. of median from known value
-0.05
-0.13
17(12.1 %) More than 3 norm. S.D. \
4(2.8 %) Between 2 and 3 norm. S.D.'
104(73.8 %) Within 1 norm. S.D.
of known value
16(11.3 %) Between 1 and 2 norm. S.D.
-------
4/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 1 l-Feb-1994
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
4.4
4.0
4.0
0.23
0.079
4.13
-3.18
-3.44 U
AA







•
AE
9.3
9.7
9.5
0.20
0.079
9.50
-0.08
-0.35
AF
11.8
11.9
10.8
0.61
0.217
11.50
1.07
0.81
AI
1.0
1.0
1.0
0.00
0.000
1.00
-4.99
-5.25 x
AJ
10.5
10.9
10.3
0.31
0.118
10.57
0.53
0.27
AK







•
AL
11.3
10.5
12.6
1.06
0.413
11.47
1.05
0.79
AP
10.4
10.2
10.0
0.20
0.079
10.20
0.32
0.06
AU







•
AW
10.4
10.5
10.4
0.06
0.020
10.43
0.46
0.19
AZ
9.8
9.7
9.5
0.15
0.059
9.67
0.01
-0.25
BA
9.3
7.0
8.0
1.15
0.453
8.10
-0.89
-1.15
BC
8.4
9.9
8.6
0.81
0.295
8.97
-0.39
-0.65
BG
8.8
9.6
8.7
0.49
0.177
9.03
-0.35
-0.62
BG
10.1
9.6
9.7
0.26
0.098
9.80
0.09
-0.17
BG
10.0
10.0
10.0
0.00
0.000
10.00
0.21
-0.06
BH
12.1
11.1
10.6
0.76
0.295
11.27
0.94
0.67
BK
11.6
10.8
10.7
0.49
0.177
11.03
0.80
0.54
BL







•
BM
9.3
9.9
9.5
0.31
0.118
9.57
-0.04
-0.31
BN
8.2
8.7
9.6
0.71
0.276
8.83
-0.47
-0.73
BO
8.9
8.1
7.1
0.90
0.354
8.03
-0.93
-1.19
C
9.9
9.3
9.4
0.32
0.118
9.53
-0.06
-0.33
CA
10.1
9.8
9.3
0.40
0.158
9.73
0.05
-0.21
CE
8.5
8.2
7.5
0.51
0.197
8.07
-0.91
-1.17
CG
10.3
9.4
9.7
0.46
0.177
9.80
0.09
-0.17
CJ
9.8
9.8
9.6
0.12
0.039
9.73
0.05
-0.21
CK
10.0
9.2
8.8
0.61
0.236
9.33
-0.18
-0.44
CM
10.2
10.1
9.9
0.15
0.059
10.07
0.25
-0.02
CO
9.4
10.1
11.7
1.18
0.453
10.40
0.44
0.17
CQ







•
cs
10.7
10.7
10.7
0.00
0.000
10.70
0.61
0.35
cx
9.8
10.1
9.9
0.15
0.059
9.93
0.17
-0.10
D
9.8
9.9
9.9
0.06
0.020
9.87
0.13
-0.13
DB
10.3
9.8
9.8
0.29
0.098
9.97
0.19
-0.08
DE
10.2
10.2
10.3
0.06
0.020
10.23
0.34
0.08
DI







•
DO
10.7
10.6
10.2
0.26
0.098
10.50
0.50
0.23
DP







•
DT
6.3
6.8
8.8
1.32
0.492
7.30
-1.35
-1.62
DZ
9.5
10.0
10.7
0.60
0.236
10.07
0.25
-0.02
E
9.4
9.3
9.8
0.26
0.098
9.50
-0.08
-0.35
EB
9.1
8.4
8.4
0.40
0.138
8.63
-0.58
-0.85
EH







•
• s No data submitted TAG SYMBOLS It = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II = Below control limit
-------
(c	
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 11-Feb-1994 5 / 23
Uranium (Natural)








Lab



Exper.
Rng anal

Normalized deviation

Kes. 1 Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tog
EO








•
EP








•
ER
9.1
9.2
9.2
0.06
0.020
9.17
-0.27
-0.54

FE
9.5
9.2
9.5
0.17
0.059
9.40
-0.14
-0.40

FJ
3.0
2.9
2.9
0.06
0.020
2.93
-3;87
-4.14
X
FK








•
FN
10.1
9.6
8.8
0.66
0.256
9.50
-0.08
-0.35

FP








•
FZ
10.4
11.1
10.9
0.36
0.138
10.80
0.67
0.40

GG








•
GN
7.5
7.7
7.9
0.20
0.079
7.70
-1.12
-1.39

GO
10.4
10.3
10.8
0.26
0.098
10.50
0.50
0.23

GQ
10.4
9.8
10.1
0.30
0.118
10.10
0.26
0.00

HE
21.7
20.0
20.9
0.85
0.335
20.87
6.48
6.22
X
HK
9.3
9.2
10.6
0.78
0.276
9.70
0.03
-0.23

HL
9.3
10.4
11.7
1.20
0.473
10.47
0.48
0.21

HP
10.2
9.6
11.1
0.75
0.295
10.30
0.38
0.12

HU
4.7
4.8
4.9
0.10
0.039
4.80
-2.80
-3.06
u
I
12.6
10.9
9.6
1.50
0.591
11.03
0.80
0.54

1A








•
ID
9.2
9.8
9.9
0.38
0.138
9.63
0.00
-0.27

IE
10.4
11.1
10.6
0.36
0.138
10.70
0.61
0.35

J
10.4
9.9
10.1
0.25
0.098
10.13
0.28
0.02

JE








•
JG








•
JK
9.6
10.3
10.1
0.36
0.138
10.00
0.21
-0.06

JN
8.8
9.2
10.5
0.89
0.335
9.50
-0.08
-0.35

JP
10.0
9.8
10.1
0.15
0.059
9.97
0.19
-0.08

JS
8.1
8.1
8.1
0.00
0.000
8.10
-0.89
-1.15

JU








•
JX








• '
JY
12.6
13.2
12.9
0.30
0.118
12.90
1.88
1.62

K
9.6
11.5
10.5
0.95
0.374
10.53
0.51
0.25

KF









KH
10.0
9.7
9.9
0.15
0.059
9.87
0.13
-0.13

KL








•
L
10.1
10.3
10.5
0.20
0.079
10.30
0.38
0.12

LA








•
LB








•
LG
3.0
3.0
3.0
0.00
0.000
3.00
-3.83
-4.10

LH
11.5
12.1
11.2
0.46
0.177
11.60
1.13
0.87

LM








•
LS









LT
8.5
11.7
9.8
1.61
0.630
10.00
0.21
-0.06

LZ
19.9
19.8
19.7
0.10
0.039
19.60
6.87
5.60
X
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
1 0 5
V5==
Insufficient data
x =
Determined to be an outlier
s Below control limit
	/J
-------
¦ -		^
6/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
M







•
MN







•
MS
10.0
9.9
10.2
0.15
0.059
10.03
0.23
-0.04
MY







. •
N
9.4
9.0
9.7
0.35
0.138
9.37
-0.16
-0.42
NA
8.6
9.4
8.3
0.57
0.217
8.77
-0.51
-0.77
NC







•
NG
13.8
15.1
14.8
0.68
0.256
14.57
2.84
2.58
NH
10.0
10.2
10.5
0.25
0.098
10.23
0.34
0.08
NJ
10.0
10.0
10.0
0.00
0.000
10.00
0.21
-0.06
NK
10.4
9.3
10.2
0.59
0.217
9.97
0.19
-0.08
NO
8.9
10.0
11.1
1.10
0.433
10.00
0.21
-0.06
NT
7.2
7.1
7.0
0.10
0.039
7.10
-1.47
-1.73
OB
9.2
9.0
9.0
0.12
0.039
9.07
-0.33
-0.60
OF
8.8
8.6
8.3
0.25
0.098
8.57
-0.62
-0.89
OK







•
OS
8.8
10.2
8.2
1.03
0.394
9.07
-0.33
-0.60
OX
7.1
6.6
6.3
0.40
0.158
6.67
-1.72
-1.98
OY
11.4
10.6
11.8
0.61
0.236
11.27
0.94
0.67
OZ
8.6
8.6
9.3
0.40
0.138
8.83
-0.47
-0.73
P
12.1
12.6
14.5
1.27
0.473
13.07
1.98
1.71
PB
10.2
10.2
10.4
0.12
0.039
10.27
0.36
0.10
PC
32.2
34.1
36.1
1.95
0.768
34.13
14.14
13.88 x
PE







•
PG







•
PP
22.4
22.4
22.5
0.06
0.020
22.43
7.39
7.12 x
PQ
10.2
10.1
9.9
0.15
0.059
10.07
0.25
-0.02
PT
6.7
6.8
7.2
0.26
0.098
6.90
-1.58
-1.85
PV
5.1
5.3
5.5
0.20
0.079
5.30
-2.51
-2.77
PW
13.3
12.8
13.1
0.25
0.098
13.07
1.98
1.71
PX
22.7
21.7
22.3
0.60
0.197
22.23
7.27
7.01 x
PY








Q
3.8
5.3
3.6
0.93
0.335
4.23
-3.12
-3.39 li
QB
2.2
2.3
1.9
0.21
0.079
2.13
-4.33
-4.60 x
QJ
9.5
7.5
8.5
1.00
0.394
8.50
-0.66
-0.92
QM
10.1
11.1
11.3
0.64
0.236
10.83
0.69
0.42
QQ
5.0
5.1
5.6
0.32
0.118
5.23
-2.55
-2.81
QU
7.7
9.4
12.5
2.43
0.945
9.87
0.13
-0.13
QX
8.5
8.4
8.3
0.10
0.039
8.40
-0.72
-0.98
QZ
10.5
10.4
10.3
0.10
0.039
10.40
0.44
0.17
R
9.7
6.5
8.1
1.60
0.630
8.10
-0.89
-1.15
RC
10.8
11.3
13.3
1.32
0.492
11.80
1.25
0.98
RD







•
RF







•
RG
11.7
11.3
12.2
0.45
0.177
11.73
1.21
0.94
• = No data submitted TAG SYMBOLS ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier 	li = Below control limit
-------
(c	
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 7/23
Uranium (Natural)








Lab



Exper.
Rng anal

Normalized deviation

Res. 1 Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RK
11.2
11.0
11.4
0.20
0.079
11.20
0.90
0.64

RL
2.3
2.3
2.3
0.00
0.000
2.30
-4.24
-4.50
X
RM
10.1
8.6
9.2
0.75
0.295
9.30
-0.20
-0.46

RP
9.4
9.4
9.4
0.00
0.000
9.40
-0.14
-0.40

RR
10.5
10.2
9.9
0.30
0.118
10.20
0.32
0.06

RV
10.2
9.1
14.9
3.08
1.270
11.40
1.02
0.75

RW








•
RX








•
RZ
9.7
9.5
9.8
0.15
0.059
9.67
0.01
-0.25

S
9.3
9.3
9.2
0.06
0.020
9.27
-0.22
-0.48

SA








•
sc
11.0
13.4
10.4
1.59
0.591
11.60
1.13
0.87

SD
7.8
6.7
8.0
0.70
0.256
7.50
-1.24
-1.50

SF
10.0
9.9
9.8
0.10
0.039
9.90
0.15
-0.12

SI
9.6
10.1
9.7
0.26
0.098
9.80
0.09
-0.17

SL








•
SM
11.1
12.4
10.9
0.81
0.295
11.47
1.05
0.79

SO
10.1
10.8
11.2
0.56
0.217
10.70
0.61
0.35

ss
9.3
9.5
9.5
0.12
0.039
9.43
-0.12
-0.38

ST
9.7
10.0
9.6
0.21
0.079
9.77
0.07
-0.19

sw
9.7
9.2
10.5
0.66
0.256
9.80
0.09
-0.17

sx
13.2
9.0
12.0
2.16
0.827
11.40
1.02
0.75

sz
9.7
9.3
9.7
0.23
0.079
9.57
-0.04
-0.31

T
11.2
10.7
11.2
0.29
0.098
11.03
0.80
0.54

TA








•
TD
9.7
9.6
9.7
0.06
0.020
9.67
0.01
-0.25

TE
4.5
5.2
5.6
0.56
0.217
5.10
-2.62
-2.89

TG
9.9
10.0
10.0
0.06
0.020
9.97
0.19
-0.08

TH









TI
9.9
10.1
9.7
0.20
0.079
9.90
0.15
-0.12

TK









TL
10.8
9.1
9.3
0.93
0.335
9.73
0.05
-0.21

TN









TQ
8.4
9.0
8.7
0.30
0.118
8.70
-0.54
-0.81

TR








•
TS
9.3
11.9
9.0
1.59
0.571
10.07
0.25
-0.02

TU
11.2
11.0
11.1
0.10
0.039
11.10
0.84
0.58

TV








•
TW








•
U
0.1
0.1
0.1
0.00
0.000
0.10
-5.51
-5.77

UB








•
UE
9.6
9.3
10.0
0.35
0.138
9.63
0.00
-0.27

UI
4.3
4.3
4.6
0.17
0.059
4.40
-3.03
-3.29

UL








•
UN
15.0
16.9
18.0
1.52
0.591
16.63
4.04
3.77
X
• 3
No data submitted

TAG SYMBOLS

ft s Above control limit
in
Insufficient data
x =
Determined to be an outlier
W = Below control limit
	'J
-------
ft
8/23
V
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
	
Uranium (Natural)










>
Lab
Res. 1





Exper.
Rng anal


' Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
UP
7.3

7.6


7.8
0.25
0.098
7.57
-1.20
-1.46

UQ












•
US












•
uw
9.8

8.7


8.9
0.59
0.217
9.13
-0.29
-0.56

uz
12.2

16.3

21.7
4.76
2.658
16.73
4.09
3.83
X
VA












•
VG
12.4

12.9

12.8
0.26
0.098
12.70
1.77
1.50

VH












9
VI












•
VK












•
VL












•
VN












•
VQ












•
w
10.3

10.2


9.8
0.26
0.098
10.10
0.26
0.00

WA












*
X
10.7

10.5

10.2
0.25
0.098
10.47
0.48
0.21

Y
10.3

10.1


9.8
0.25
0.098
10.07
0.25
-0.02

Z
9.8

9.7

10.4
0.38
0.138
9.97
0.19
-0.08





Data sorted by Laboratory Averag




Average

Tag

Lab

Average
Tag
Lab
Average
Tag
Lab
0.10

X

U


8.10

BA

9.50

AE
1.00

X

AI


8.40

QX

9.50

FN
2.13

X

QB


8.50

QJ

9.53

C
2.30

X

RL


8.57

OF

9.57

sz
2.93

X

FJ


8.63

EB

9.57

BM
3.00

X

LG


8.70

TQ

9.63

ID
4.13

J1

A


8.77

NA

9.63

UE
4.23

11

Q


8.83

BN

9.67

TD
4.40

11

UI


8.83

OZ

9.67

RZ
4.80

11

HU


8.97

BC

9.67

AZ
5.10



TE


9.03

BG

9.70

HK
5.23



QQ


9.07

OS

9.73

TL
5.30



PV


9.07

OB

9.73

CJ
6.67



OX


9.13

UW

9.73

CA
6.90



PT


9.17

ER

9.77

ST
7.10



NT


9.27

S

9.80

SW
7.30



DT


9.30

RM

9.80

SI
7.50



SD


9.33

CK

9.80

CG
7.57



UP


9.37

N

9.80

BG
7.70



GN


9.40

RP

9.87

QU
8.03



BO


9.40

FE

9.87

KH
8.07



CE


9.43

SS

9.87

D
8.10



R


9.50

JN

9.90

TI
8.10



JS


9.50

E

9.90

SF
• 3 No data submitted	TAG SYMBOLS	ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier	It = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 11-Feb-1994 9/23
Uranium (Natural)
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.93

CX
10.23

DE
11.27

OY
9.97

z
10.27

PB
11.27

BH
9.97

TG
10.30

L
11.40

SX
9.97

NK
10.30

HP
11.40

RV
9.97

JP
10.40

QZ
11.47

SM
9.97

DB
10.40

CO
11.47

AL
10.00

NO
10.43

AW
11.50

AF
10.00

NJ
10.47

X
11.60

SC
10.00

LT
10.47

HL
11.60

LH
10.00

BG
10.50

GO
11.73

RG
10.00

JK
10.50

DO
11.80

RC
10.03

MS
10.53

K
12.70

VG
10.07

Y
10.57

AJ
12.90

JY
10.07

TS
10.70

CS
13.07

PW
10.07

PQ
10.70

SO
13.07

P
10.07

DZ
10.70

IE
14.57

NG
10.07

CM
10.80

FZ
16.63
X
UN
10.10

W
10.83

QM
16.73
X
UZ
10.10

GQ
11.03

T
19.80
X
LZ
10.13

J
11.03

I
20.87
X
HE
10.20

RR
11.03

BK
22.23
X
PX
10.20

AP
11.10

TU
22.43
X
PP
10.23

NH
11.20

RK
34.13
X
PC
20
responding labs
Frequency distribution
104
o
pMlfllllHlHf	u.
2	0	+
% responding labs
20-	
-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-
0	r
-6
	M
By i
¦i	, ¦¦¦if ibIIIIHb|b
JUp_
—i—
+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 = Determined to be an outlier
IT = Above control limit
il = Below control limit
-------
/?=
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb*1994 10 / 23
Radium-226	Statistical Summary	196 Participants
The known value of this nuclide is 19.9 pCi/1 with an expected precision of 3.0; the control limits
are 14.7 to 25.1; the warning regions are 14.7 to 16.4 and 23.4 to 25.1
71(36.2 %) Failed to respond ,
10(5.1 %) Outliers
14(7.1 %) Out of control
but not an outlier
Statistic
94(48.0 %) Within all limits
Respondents
7(3.6 %) 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
20.92
7.54
56.83
36.03
5.14
0.14
19.50
-2.01
-0.05
Grand Avg 19.39
3.51
12.34
18.11
-2.56
-0.15
19.40
-2.51
-0.14
24(19.2 %) More than 3 norm. S.D. •
7(5.6 %) Between 2 and 3 norm. S.D.
9(55.2 %) Within 1 norm. S.D.
of known value
25(20.0 %) Between 1 and 2 norm. S.D.
-------
((	








	^
11/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994

Radium-226







-v
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
19.9
19.6
19.6
0.17
0.059
19.70
0.18
-0.12

AA








•
AE
21.4
21.6
20.9
0.36
0.138
21.30
1.10
0.81

AF
19.4
19.5
18.7
0.44
0.158
19.20
-0.11
-0.40

AI








•
AJ
17.7
18.2
18.5
0.40
0.158
18.13
-0.73
-1.02

AK








•
AL
18.3
18.4
19.2
0.49
0.177
18.63
-0.44
-0.73

AP
17.1
17.3
17.4
0.15
0.059
17.27
-1.23
-1.52

AU








•
AW
17.9
17.5
17.7
0.20
0.079
17.70
-0.98
-1.27

AZ
17.4
17.9
18.1
0.36
0.138
17.80
-0.92
-1.21

BA
22.1
22.8
22.8
0.40
0.138
22.57
1.83
1.54

BC
17.7
17.7
17.5
0.12
0.039
17.63
-1.01
-1.31

BG
29.5
29.2
28.7
0.40
0.158
29.13
5.63
5.33
ft
BH
18.0
19.7
17.0
1.37
0.532
18.23
-0.67
-0.96

BK
19.4
20.0
19.3
0.38
0.138
19.57
0.10
-0.19

BL








•
BM
17.9
17.9
18.1
0.12
0.039
17.97
-0.82
-1.12

BN
21.6
20.6
19.6
1.00
0.394
20.60
0.70
0.40

BO
18.9
18.5
17.7
0.61
0.236
18.37
-0.59
-0.89

C
19.4
19.2
19.0
0.20
0.079
19.20
-0.11
-0.40

CA
20.9
18.0
19.3
1.45
0.571
19.40
0.01
-0.29

CE
18.5
17.0
16.9
0.90
0.315
17.47
-1.11
-1.40

CG
18.0
18.5
20.2
1.15
0.433
18.90
-0.28
-0.58

CJ
20.0
22.0
21.0
1.00
0.394
21.00
0.93
0.64

CK
17.0
18.0
18.0
0.58
0.197
17.67
-0.99
-1.29

CM








0
CO








•
CQ








•
cs
20.2
20.8
20.3
0.32
0.118
20.43
0.60
0.31

cx








•
D








•
DB
16.0
16.1
17.5
0.84
0.295
16.53
-1.65
-1.94

DE
23.1
23.1
23.2
0.06
0.020
23.13
2.16
1.87

DI








•
DO








•
DP








•
DT
21.6
20.6
22.3
0.85
0.335
21.50
1.22
0.92

DZ
22.1
21.1
21.5
0.50
0.197
21.57
1.26
0.96

E
18.6
18.6
18.0
0.35
0.118
18.40
-0.57
-0.87

EB
20.2
19.4
20.2
0.46
0.158
19.93
0.31
0.02

EH








•
EO
18.0
19.1
20.6
1.31
0.512
19.23
-0.09
-0.38

EP
15.1
15.1
14.8
0.17
0.059
15.00
-2.53
-2.83

• =
No data submitted

TAG SYMBOLS

It = Above control limit
0 S
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 12/23
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
ER
19.9
19.2
18.8
0.56
0.217
19.30
-0.05
-0.35

FE
25.6
23.6
23.2
1.29
0.473
24.13
2.74
2.44

FJ







•
FK








•
FN
19.3
20.3
23.0
1.91
0.728
20.87
0.85
0.56

FP








•-
FZ
5.2
3.8
4.4
0.70
0.276
4.47
-8.62
-8i91
X
GG








•
GN
13.9
13.8
13.5
0.21
0.079
13.73
-3.27
-3.56
u
GO
21.9
21.2
21.7
0.36
0.138
21.60
1.28
0.98

GQ
16.0
16.2
16.2
0.12
0.039
16.13
-1.88
-2.17

HE
39.3
39.9
42.2
1.53
0.571
40;47
12,17
1L87
X
HK
19.6
20.6
19.7
0.55
0.197
19.97
0.33
0.04

HL
19.1
19.2
19.1
0.06
0.020
19.13
-0.15
-0.44

HP
18.3
21.3
20.9
1.63
0.591
20.17
0.45
0.15

HU
19.9
19.8
19.8
0.06
0.020
19.83
0.26
-0.04

I
21.1
23.5
21.5
1.29
0.473
22.03
1.53
1.23

IA









ID
18.2
20.5
19.0
1.17
0.453
19.23
-0.09
-0.38

IE









J
16.5
20.2
19.5
1.97
0.728
18.73
-0.38
-0.67

JE








•
JG
15.0
13.1
16.5
1.70
0.669
14.87
-2.61
-2.91

JK








•
JN
18.0
18.9
19.7
0.85
0.335
18.87
-0.30
-0.60

JP








•
JS
20.1
17.4
20.3
1.62
0.571
19.27
-0.07
-0.37

JU









JX
39.9
40.9
40.5
0.50
0.197
40:43
12 15
11.85
X
JY








•'
K
17.1
18.2
18.5
0.74
0.276
17.93
-0.84
-1.14

KF








•
KH
18.4
18.6
18.2
0.20
0.079
18.40
-0.57
-0.87

KL
18.6
22.3
18.6
2.14
0.728
19.83
0.26
-0.04

L
17.9
17.9
17.5
0.23
0.079
17.77
-0.94
-1.23

LA








•
LB








•
LG








•
LH









LM








•
LS








•
LT
20.2
20.5
20.1
0.21
0.079
20.27
0.51
0.21

LZ
18.3
18.1
18.3
0.12
0.039
18.23
-0.67
-0.96

M
8.4
8.8
8.5
0.21
0.079
8.57
-6.25
-6.54
Ji
MN








•
• =
0 3
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
JJ- s Below control limit
-------
ft	








	
13/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994

Radium-226








Lab
Res. 1
Rea. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
MS
19.1
23.2
25.8
3.38
1.608
22.70
1.91
1.62

MY
39.6
39.8
39.5
0.15
0.069
39.63
11.69
11.39
X
N
20.8
21.7
21.3
0.45
0.177
21.27
1.08
0.79

NA








•
NC








•
NG
21.3
20.9
21.1
0.20
0.079
21.10
0.99
0.69

NH
20.7
17.8
19.8
1.48
0.571
19.43
0.03
-0.27

NJ
30.0
42.0
34.0
6.11
3.596
35.33
9.20
8.91
X
NK








•
NO
23.0
24.0
25.0
1.00
0.394
24.00
2.66
2.37

NT
18.8
19.5
20.2
0.70
0.276
19.50
0.06
-0.23

OB
21.0
21.0
21.0
0.00
0.000
21.00
0.93
0.64

OF
22.0
10.3
3.5
9.36
6.033
11.93
-4.31
-4.60

OK








•
OS








•
OX
19.8
19.6
19.6
0.12
0.039
19.67
0.16
-0.13

OY
19.8
18.7
19.6
0.59
0.217
19.37
-0.01
-0.31

OZ








' •
P
25.7
26.3
24.9
0.70
0.276
25.63
3.60
3.31
It
PB
18.2
19.8
18.5
0.85
0.315
18.83
-0.32
-0.62

PC
23.7
24.9
26.1
1.20
0.473
24.90
3.18
2.89

PE








.•
PG
21.3
20.0
20.1
0.72
0.256
20.47
0.62
0.33

PP
41.6
41.4
41.7
0.15
0.059
41.53
12.78
12.49
X
PQ








•
PT
18.9
18.0
20.4
1.21
0.473
19.10
-0.17
-0.46

PV
40.7
35.6
42.9
3.74
1.833
39.73
11.75
11.46
X
PW
26.5
22.4
20.5
3.07
1.345
23.13
2.16
1.87

PX
37.6
39.3
40.7
1.55
0.610
39.20
11.44
11.14
X
PY








•
Q
22.0
20.6
23.7
1.55
0.610
22.10
1.56
1.27

QB
19.3
19.2
19.3
0.06
0.020
19.27
-0.07
-0.37

QJ








•
QM
19.8
19.8
19.9
0.06
0.020
19.83
0.26
-0.04

QQ








•
QU
18.8
18.8
19.1
0.17
0.059
18.SO
-0.28
-0.58

QX








•
QZ
20.4
18.2
18.5
. 1.19
0.433
19.03
-0.21
-0.50

R
18.2
16.1
15.5
1.42
0.532
16.60
-1.61
-1.91

RC
14.5
10.8
12.4
1.86
0.728
12.57
-3.94
-4.23
li
RD








•
RF








•
RG








•
RK
10.3
9.4
9.9
0.45
0.177
9.87
-5.50
-5.79

RL








•
• =
No data submitted

TAG SYMBOLS

It = Above control limit
0 s
Insufficient data
x =
Determined to be an outlier
11 = Below control limit J
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 14 / 23
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RM
19.3
22.4
18.4
2.10
0.788
20.03
0.37
0.08

RP








•
RR








•
RV
76.6
77.1
59.1
10.25
5.846
70.93
29.76
29.46
X
RW








•
RX








• -
RZ
19.9
19.6
18.5
0.74
0.276
19.33
-0.03
-0.33

S
20.4
20.5
20.6
0.10
0.039
20.50
0.64
0.35

SA








•
SC
16.3
20.3
18.5
2.00
0.788
18.37
-0.59
-0.89

SD
18.7
19.2
20.4
0.87
0.335
19.43
0.03
-0.27

SF
16.9
17.3
15.7
0.83
0.315
16.63
-1.59
-1.89

SI
25.8
26.9
27.0
0.67
0.236
26.57
4.14
3.85
ft
SL








•
SM
18.5
18.7
18.4
0.15
0.059
18.53
-0.49
•0.79

SO








*
ss
19.6
19.5
19.4
0.10
0.039
19.50
0.06
-0.23

ST
19.9
19.6
19.9
0.17
0.059
19.80
0.24
-0.06

SW
35.9
31.9
33.5
2.01
0.788
33.77
8.30
8.01
X
sx
24.3
17.9
19.3
3.36
1.495
20.50
0.64
0.35

sz
18.7
18.6
18.6
0.06
0.020
18.63
-0.44
-0.73

T
20.1
20.1
19.4
0.40
0.138
19.87
0.28
-0.02

TA








•
TD
22.7
16.6
22.5
3.47
1.383
20.60
0.70
0.40

TE
14.0
13.4
18.8
2.96
1.120
15.40
-2.30
-2.60

TG
18.0
19.0
15.0
2.08
0.788
17.33
-1.19
-1.48

TH
9.2
10.3
8.0
1.15
0.453
9.17
-5.90
-6.20
U
TI
16.7
17.0
15.9
0.57
0.217
16.53
-1.65
-1.94

TK
30.8
27.4
34.1
3.35
1.608
30.77
6.57
6.27
It
TL
15.1
12.4
6.7
4.29
2.245
11.40
-4.61
-4.91
li
TN
20.9
20.7
18.3
1.45
0.512
19.97
0.33
0.04

TQ
21.7
20.7
22.9
1.10
0.433
21.77
1.37
1.08

TR









TS
19.8
19.3
20.9
0.82
0.315
20.00
0.35
0.06

TU
18.4
18.8
18.6
0.20
0.079
18.60
-0.46
-0.75

TV








•
TW








•
U
19.7
18.3
19.6
0.78
0.276
19.20
-0.11
-0.40

UB








•
UE
21.6
22.1
23.9
1.21
0.453
22.53
1.81
1.52

UI
20.0
20.4
19.9
0.26
0.098
20.10
0.41
0.12

UL








•
UN
29.8
29.4
31.3
1.00
0.374
30.17
6.22
5.93
It
UP
17.9
18.5
18.1
0.31
0.118
18.17
-0.71
-1.00

UQ
20.0
19.2
19.8
0.42
0.158
19.67
0.16
-0.13

• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
JJ s Below control limit
-------
15/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-22 6
Lab
US
uw
uz
VA
VG
VH
VI
VK
VL
VN
VQ
W
WA
X
Y
Z
Res. 1
18.3
20.1
24.3
10.0
18.5
20.2
22.5
Res. 2
Res. 3
Exper.
Sigma
22.2
19.1
24.4
11.2
20.5
20.1
23.8
17.0
20.6
27.9
11.2
21.4
20.0
22.3
2.71
0.76
2.05
0.69
1.48
0.10
0.81
Rng anal
(R + SR)
1.045
0.295
0.709
0.236
0.571
0.039
0.295
Normalized deviation
Average (grand-avg) (known) Tag
19.17 -0.13 -0.42
0.31 0.02
19.93
25.53
10.80
20.13
20.10
22.87
3.55
-4.96
0.43
0.41
2.01
3.25
-5.25
0.13
0.12
1.71
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
4.47
X
FZ
17.97

BM
19.23

EO
8.57
u
M
18.13

AJ
19.27

QB
9.17
u
TH
18.17

UP
19.27

JS
9.87
11
RK
18.23

LZ
19.30

ER
10.80
u
VL
18.23

BH
19.33

RZ
11.40
u
TL
18.37

SC
19.37

OY
11.93

OF
18.37

BO
19.40

CA
12.57
u
RC
18.40

KH
19.43

NH
13.73
11
GN
18.40

E
19.43

SD
14.87

JG
18.53

SM
19.50

SS
15.00

EP
18.60

TU
19.50

NT
15.40

TE
18.63

SZ
19.57

BK
16.13

GQ
18.63

AL
19.67

UQ
16.53

TI
18.73

J
19.67

OX
16.53

DB
18.83

PB
19.70

A
16.60

R
18.87

JN
19.80

ST
16.63

SF
18.90

QU
19.83

QM
17.27

AP
18.90

CG
19.83

KL
17.33

TG
19.03

QZ
19.83

HU
17.47

CE
19.10

PT
19.87

T
17.63

BC
19.13

HL
19.93

UW
17.67

CK
19.17

US
19.93

EB
17.70

AW
19.20

U
19.97

TN
17.77

L
19.20

C
19.97

HK
17.80

AZ
19.20

AF
20.00

TS
17.93

K
19.23

ID
20.03

RM
• = No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
U = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 16/23
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
20.10

WA
21.27
N
24.90

PC
20.10

UI
21.30
AE
25.53
ft
VG
20.13

W
21.50
DT
25.63
ft
P
20.17

HP
21.57
DZ
26.57
ft
SI
20.27

LT
21.60
GO
29.13
ft
BG
20.43

CS
21.77
TQ
30.17
ft
UN
20.47

PG
22.03
I
30.77
ft
TK
20.50

sx
22.10
Q
33.77
X
SW
20.50

s
22.53
UE
35.33
X
NJ
20.60

TD
22.57
BA
39.20
X
PX
20.60

BN
22.70
MS
39.63
X
MY
20.87

FN
22.87
X
39.73
X
PV
21.00

OB
23.13
PW
40.43
X
JX
21.00

CJ
23.13
DE
40.47
X
HE
21.10

NG
24.00
NO
41.53
X
PP



24.13
FE
70.93
X
RV
% responding labs

Frequency distribution



10-

lllai,

~ T~*
-4	-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
-6
% responding labs
10-
+4
+6


If ¦¦ | ¦
-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
ft s Above control limit
U = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 17/23
Radium-228	Statistical Summary	196 Participants
The known value of this nuclide is 14.7 pCi/1 with an expected precision of 3.7; the control limits
are 8.3 to 21.1; the warning regions are 8.3 to 10.4 and 19.0 to 21.1
87(44.4 %) Failed to respond
10(5.1 %) Outliers
7(3.6 %) Out of control
but not an outlier
Statistic
84(42.9 %) Within all limits
Respondents
-• 8(4.1 %) In warning zone
but within control
Non-outliers
Mean
15.97
Grand Avg 14.09
Std. Dev.
8.08
3.07
Variance
65.30
9.43
% Coef. of Var.
50.60
21.80
% deviation of mean from known value
8.63
-4.16
Norm. dev. of mean from known value
0.16
-0.20
Median
14.80
14.10
% deviation of median from known value
0.68
-4.08
Norm. dev. of median from known value
0.01
-0.20
17(15.6 %) More than 3 norm. S.D. ,
8(7.3 %) Between 2 and 3 norm. S.D
5(59.6 %) Within 1 norm. S.D.
of known value
19(17.4 %) Between 1 and 2 norm. S.D.
V:
-------
'
18/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
\

Radium-228







N
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
8.2
9.4
6.5
1.46
0.463
8.03
-2.83
-3.12

AA








•
AE
13.1
12.7
13.5
0.40
0.128
13.10
-0.46
-0.75

AF
15.9
15.9
16.1
0.12
0.032
15.97
0.88
0.59

AI
17.3
15.5
14.9
1.25
0.383
15.90
0.85
0.56

AJ
13.7
14.0
14.6
0.46
0.144
14.10
0.01
-0.28

AK








6
AL
17.2
17.1
15.1
1.18
0.335
16.47
1.11
0.83

AP
16.6
15.6
14.5
1.05
0.335
15.57
0.69
0.41

AU








•
AW
11.3
12.8
11.4
0.84
0.239
11.83
-1.06
-1.34

AZ
15.5
15.0
14.4
0.55
0.176
14.97
0.41
0.12

BA
16.2
15.5
13.6
1.35
0.415
15.10
0.47
0.19

BC
11.3
11.5
12.0
0.36
0.112
11.60
-1.16
-1.45

BG








9
BH
16.7
18.2
18.3
0.90
0.255
17.73
1.71
1.42

BK
14.2
12.7
14.9
1.12
0.351
13.93
-0.07
-0.36

BL








-•
BM
16.8
16.2
16.0
0.42
0.128
16.33
1.05
0.76

BN








+
BO
11.9
11.6
12.0
0.21
0.064
11.83
-1.06
-1.34

C
13.3
13.0
13.4
0.21
0.064
13.23
-0.40
-0.69

CA
15.4
15.5
14.1
0.78
0.223
15.00
0.43
0.14

CE
13.8
12.3
13.4
0.78
0.239
13.17
-0.43
-0.72

CG
15.3
16.6
15.0
0.85
0.255
15.63
0.72
0.44

CJ
17.0
14.0
16.0
1.53
0.479
15.67
0.74
0.45

CK
14.0
13.0
13.0
0.58
0.160
13.33
-0.35
-0.64

CM








•
CO








•
CQ








•
CS
13.0
13.8
14.4
0.70
0.223
13.73
-0.17
-0.45

cx









D








•
DB
13.1
12.6
12.9
0.25
0.080
12.87
-0.57
-0.86

DE
15.8
15.8
15.8
0.00
0.000
15.80
0.80
0.51

DI








•
DO








•
DP








•
DT
14.8
15.2
16.0
0.61
0.192
15.33
0.58
0.30

DZ
13.7
14.1
13.4
0.35
0.112
13.73
-0.17
-0.45

E








•
EB
13.5
12.5
13.0
0.50
0.160
13.00
-0.51
-0.80

EH








•
EO
10.3
12.6
11.9
1.18
0.367
11.60
-1.16
-1.45

EP
11.3
11.0
11.1
0.15
0.048
11.13
-1.38
-1.67

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
JJ. = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 11-Feb-1994 19 / 23
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EK








•
FE








•
FJ








•
FK








•
FN
17.1
18.0
17.5
0.45
0.144
17.53
1.61
1.33

FP








•
FZ
1.0
1.2
0.7
0.25
0.080
0.97
-6.14
-6.43
X
GG








•
GN
16.3
15.8
15.6
0.36
0.112
15.90
0.85
0.56

GO
21.2
25.9
22.2
2.48
0.750
23.10
4.22
3.93
tr
GQ
10.8
10.0
9.3
0.75
0.239
10.03
-1.90
-2.18

HE
31.6
34.8
34.7
1.82
0.511
33.70
9.18
8.89
X
HK
11.4
12.0
12.4
0.50
0.160
11.93
-1.01
-1.30

HL
13.6
12.5
12.6
0.61
0.176
12.90
-0.56
-0.84

HP
13.6
13.4
14.2
0.42
0.128
13.73
-0.17
-0.45

HU








•
I
11.9
12.9
11.7
0.64
0.192
12.17
-0.90
-1.19

IA








•
ED
20.3
20.2
19.6
0.38
0.112
20.03
2.78
2.50

IE








•
J
13.3
13.9
14.3
0.50
0.160
13.83
-0.12
-0.41

«JE








•
JG
19.3
20.6
21.3
1.01
0.319
20.40
2.95
2.67

JK








•
JN








•
JP








•
JS
13.6
14.3
12.9
0.70
0.223
13.60
-0.23
-0.51

JU








•
JX
27.4
29.6
28.5
1.10
0.351
28.50
6.75
6.46

JY








•
K
17.0
15.8
17.4
0.83
0.255
16.73
1.24
0.95

KF









KH
15.2
16.0
15.6
0.40
0.128
15.60
0.71
0.42

KL
18.0
18.5
17.1
0.71
0.223
17.87
1.77
1.48

L
15.1
15.5
15.4
0.21
0.064
15.33
0.58
0.30

LA








0
LB








9
LG








•
LH








•
LM








•
LS








*
LT
12.7
11.5
13.7
1.10
0.351
12.63
-0.68
-0.97

LZ








•
M
7.0
7.5
7.6
0.32
0.096
7.37
-3.15
-3.43

MN








•
• =
0 =
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
ft 3 Above control limit
U = Below control limit
-------
(¦
20/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-228








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(laiown) Tag
MS
4.5
3.8
4.7
0.47
0.144
4.33
-4.57
-4.85
a
MY








9
N
13.9
15.7
15.1
0.92
0.287
14.90
0.38
0.09

NA








•
NC








•
NG
9.5
10.9
10.3
0.70
0.223
10.23
-1.80
-2.09

NH
15.0
17.6
16.7
1.32
0.415
16.43
1.10
0.81

NJ
62.0
68.0
61.0
3.79
1.224
63.67
23.21
22.92
X
NK








•
NO
15.2
16.1
17.8
1.32
0.415
16.37
1.07
0.78

NT
13.8
14.3
13.2
0.55
0.176
13.77
-0.15
-0.44

OB








•
OF
21.2
14.5
13.6
4.15
1.406
16.43
1.10
0.81

OK








•
OS








•
OX
15.2
14.4
14.9
0.40
0.128
14.83
0.35
0.06

OY
11.6
10.4
10.7
0.62
0.192
10.90
-1.49
-1.78

OZ








•
P
14.1
16.1
14.3
1.10
0.319
14.83
0.35
0.06

PB
14.5
15.3
14.8
0.40
0.128
14.87
0.36
0.08

PC
18.6
19.4
20.3
0.85
0.271
19.43
2.50
2.22

PE








•
PG








•
PP
29.0
37.4
31.6
4.30
1.649
32.67
8.70
8.41
X
PQ








*
PT
39.4
36.0
36.6
1.81
0.543
37.33
10.88
10.60
X
PV
14.8
15.9
17.1
1.15
0.367
15.93
0.86
0.58

PW
13.0
13.1
12.4
0.38
0.112
12.83
-0.59
-0.87

PX








•
PY








•
Q
22.2
20.3
18.4
1.90
0.607
20.30
2.91
2.62

QB








•
QJ








•
QM








9
QQ








•
QU
4.9
6.8
9.8
2.47
0.782
7.17
-3.24
-3.53

QX








•
QZ
14.6
14.4
14.2
0.20
0.064
14.40
0.15
-0.14

R








•
RC
18.1
14.9
13.5
2.36
0.734
15.50
0.66
0.37

RD








•
RF








•
RG








•
RK
35.3
37.3
33.2
2.05
0.655
35.27
9.91
9.63
X
RL








•
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 11-Feb-1994 21/23
Radium-228








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RM
17.1
20.0
19.9
1.65
0.463
19.00
2.30
2.01

RP








•
RR








•
RV
13.4
12.4
14.4
1.00
0.319
13.40
-0.32
-0.61

RW








«
RX








•
RZ
15.6
16.1
16.8
0.60
0.192
16.17
0.97
0.69

S
13.3
13.1
13.3
0.12
0.032
13.23
-0.40
-0.69

SA








•
sc
8.5
8.4
8.1
0.21
0.064
8.33
-2.69
-2.98

SD
13.1
14.6
12.9
0.93
0.271
13.53
-0.26
-0.55

SF
14.9
16.3
13.2
1.55
0.495
14.80
0.33
0.05

SI
15.9
11.1
12.5
2.47
0.766
13.17
-0.43
-0.72

SL









SM
12.2
14.5
16.4
2.10
0.670
14-37
0.13
-0.16

SO








•
ss
12.2
15.0
15.0
1.62
0.447
14.07
-0.01
-0.30

ST
11.4
12.3
14.1
1.37
0.431
12.60
-0.70
-0.98

sw
7.1
6.2
6.3
0.49
0.144
6.53
-3.54
-3.82

sx
12.8
11.9
13.3
0.71
0.223
12.67
-0.67
-0.95

sz
11.3
11.6
10.1
0.79
0.239
11.00
-1.45
-1.73

T
15.6
16.5
15.4
0.59
0.176
15.83
0.82
0.53

TA








•
TD
46.8
40.6
49.8
4.69
1.893
46.73
14.81
14.53
X
TE
15.4
16.4
15.7
0.51
0.160
15.83
0.82
0.53

TG
12.1
12.5
11.8
0.35
0.112
12.13
-0.91
-1.20

TH
5.5
6.1
4.8
0.65
0.208
5.47
-4.04
-4.32
li
TI
13.5
13.4
13.5
0.06
0.016
13.47
-0.29
-0.58

TK
42.9
38:2
47,8
4.80
2.014
42.97
13:52
13.23
X
TL
16.1
13.8
16.2
1.36
0.383
15.37
0.60
0.31

TN
16.7
13.4
21.2
3.92
1.467
17.10
1.41
1.12

TQ
16.3
16.1
17.2
0.59
0.176
16.53
1.14
0.86

TR









TS
15.7
16.4
14.6
0.91
0.287
15.57
0.69
0.41

TU








•
TV








•
TW








«
U
15.1
12.0
12.5
1.66
0.495
13.20
-0.42
-0.70

UB








•
UE
14.5
15.6
18.4
2.01
0.623
16.17
0.97
0.69

UI
24.7
27.2
23.4
1.93
0.607
25.10
5.16
4;87
X
UL








•
UN
12.3
12.0
12.1
0.15
0.048
12.13
-0.91
-1.20

UP
11.6
12.8
11.8
0.64
0.192
12.07
-0.95
-1.23

UQ
12.6
12.2
11.8
0.40
0.128
12.20
-0.88
-1.17

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
22/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
US








uw
16.2
15.0
16.0
0.64
0.192
15.73
0.77
0.48
uz








VA








VG
17.6
13.5
16.5
2.12
0.655
15.87
0.83
0.55
VH








VI








VK








VL
17.6
11.4
14.0
3.11
0.990
14.33
0.11
-0.17
VN








VQ








w
12.1
12.8
12.0
0.44
0.128
12.30
-0.84
-1.12
WA
13.6
13.5
13.7
0.10
0.032
13.60
-0.23
-0.51
X
16.4
17.0
17.8
0.70
0.223
17.07
1.39
1.11
Y








Z








Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
0.97
X
FZ
12.67

SX
14.37

SM
4.33
u
MS
12.83

PW
14.40

QZ
5.47
u
TH
12.87

DB
14.80

SF
6.53
u
SW
12.90

HL
14.83

P
7.17
a
QU
13.00

EB
14.83

OX
7.37
u
M
13.10

AE
14.87

PB
8.03
u
A
13.17

SI
14.90

N
8.33

SC
13.17

CE
14.97

AZ
10.03

GQ
13.20

U
15.00

CA
10.23

NG
13.23

S
15.10

BA
10.90

OY
13.23

c
15.33

L
11.00

SZ
13.33

CK
15.33

DT
11.13

EP
13.40

RV
15.37

TL
11.60

EO
13.47

n
15.50

RC
11.60

BC
13.53

SD
15.57

TS
11.83

BO
13.60

WA
15.57

AP
11.83

AW
13.60

JS
15.60

KH
11.93

HK
13.73

HP
15.63

CG
12.07

UP
13.7a

DZ
15.67

CJ
12.13

UN
13.73

cs
15.73

UW
12.13

TG
13.77

NT
15.80

DE
12.17

I
13.83

J
15.83

TE
12.20

UQ
13.93

BK
15.83

T
12.30

W
14.07

ss
15.87

VG
12.60

ST
14.10

AJ
15.90

GN
12.63

LT
14.33

VL
15.90

AI
• s No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	x = Determined to be an outlier	U = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 11-Feb-1994 23 / 23
Radium-228
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
15.93
PV
16.73
K
20.40

JG
15.97
AF
17.07
X
23.10
tr
GO
16.17
UE
17.10
TN
25.10
X
UI
16.17
RZ
17.53
FN
28.50
X
JX
16.33
BM
17.73
BH
32.67
X
PP
16.37
NO
17.87
KL
33.70
X
HE
16.43
OF
19.00
RM
35.27
X
RK
16.43
NH
19.43
PC
37.33
X
PT
16.47
AL
20.03
ID
42.97
X
TK
16.53
TQ
20.30
Q
45.73
X
TD




63.67
X
NJ
% responding labs

Frequency distribution



10-

iL
-2	0	+2
Normalized deviation of the mean from the known value
+4
+6
% responding labs	 Frequency distribution
10- - -
oW
¦	, ¦ mmf
-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 = Determined to be an outlier	II = Below control limit
-------
United States
Environmental Protection
Agency
Oflice of Research and
Development
Washington, DC 20460
EPA/600/R-94/076
March 1994
Tritium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the March 4,1994 Data
O0Mnrd94-O76
-------
Tritium in Water
Performance Evaluation Study
March 4, 1994
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 4, 1994.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-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.
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, 4-Mar-1994	1/10
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 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.
-------
2/10
EMSL-LV Performance Evaluation: Tritium in Water, 4-Mar-1994
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 ths 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 valuo 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, 4-Mar-1994
3/10
Tritium
Statistical Summary
226 Participants
The known value of this nuclide is 4936.0 pCi/1 with an expected precision of 494.0; the control limits
are 4078.9 to 5793.1; the warning regions are 4078.9 to 4364.2 and 5507.8 to 5793.1
45(19.9 %) Failed to respond •,
6(2.7 %) Outliers •
18(8.0 %) Out of control *
but not an outlier
Statistic
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
, 142(62.8 %) Within all limits
Respondents
4923.89
1142.70
1305770.15
23.21
-0.25
-0.01
4823.33
-2.28
-0.10
** 15(6.6 %) In warning zone
but within control
	Non-outliers
Grand Avg 4844.97
477.67
228168.29
9.86
-1.84
-0.19
4819.00
-2.37
-0.24
24(13.3 %) More than 3 norm. S.D. %
15(8.3 %) Between 2 and 3 norm. S.D. *
,94(51.9 %) Within 1 norm. S.D.
of known value
48(26.5 %) Between 1 and 2 norm. S.D.
-------
r	
4/10 EMSL-LV Performance Evaluation: Tritium in Water,
4-Mar-1994

	^
Tritium








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
4080.0
4200.0
4478.0
204.16
0.476
4252.67
-2.08
-2.40

AB







•
AE
5000.0
4970.0
4890.0
56.86
0.132
4953.33
0.38
0.06

AF
4969.0
4829.0
4824.0
82.30
0.173
4874.00
0.10
-0.22

AH
4770.0
4810.0
4770.0
23.14
0.048
4783.33
-0.22
-0.54

AI
4850.0
4930.0
4770.0
80.01
0.191
4850.00
0.02
-0.30

AJ
5158.0
5315.0
5229.0
78.63
0.188
5234.00
1.36
1.04

AK
5272.0
5196.0
5104.0
84.13
0.201
5190.67
1.21
0.89

AP
4933.0
4893.0
4740.0
101.86
0.231
4855.33
0.04
-0.28

AU
5100.0
5100.0
5100.0
0.00
0.000
5100.00
0.89
0.58

AW
4664.0
4743.0
4783.0
60.55
0.142
4730.00
-0.40
-0.72

AY
4778.0
4805.0
4778.0
15.57
0.032
4787.00
-0.20
-0.52

AZ
4377.0
4061.0
5218.0
598.02
1.730
4552.00
-1.03
-1.35

BA
5142.0
5145.0
5157.0
8.00
0.018
5148.00
1.06
0.74

BB
4729.0
4788.0
4925.0
100.55
0.234
4814.00
-0.11
-0.43

BC
4850.0
4750.0
4870.0
64.31
0.143
4823.33
-0.08
-0.40

BG
4700.0
4300.0
4600.0
208.17
0.478
4533.33
-1.09
-1.41

BI
5040.0
5090.0
4910.0
92.92
0.215
5013.33
0.59
0.27

BL
5028.0
4917.0
4676.0
179.96
0.421
4873.67
0.10
-0.22

BM
6130.0
6020.0
6120.0
60.84
0.132
6090.00
4.37
4.05
IT
BO
4430.0
4510.0
4660.0
116.76
0.275
4533.33
-1.09
-1.41

BW
3850.0
3360.0
3250.0
319.43
0.717
3486.67
-4.76
-5.08
U
C
5170.0
4746.0
4958.0
212.00
0.507
4958.00
0.40
0.08

CA
4600.0
5060.0
4870.0
231.16
0.550
4843.33
-0.01
-0.32

CC
4140.0
4960.0
4820.0
438.63
0.980
4640.00
-0.72
-1.04

CE
4790.0
4960.0
4950.0
95.39
0.203
4900.00
0.19
-0.13

CG
5404.0
4526.0
4053.0
685.54
2.172
4661.00
-0.65
-0.96

CJ
4800.0
4700.0
5000.0
152.75
0.359
4833.33
-0.04
-0.36

CK








• -
CM
4442.0
4621.0
4963.0
264.72
0.623
4675.33
-0.59
-0.91

CO
4680.0
4480.0
4260.0
210.08
0.502
4473.33
-1.30
-1.62

CP
4713.0
4575.0
4644.0
69.01
0.165
4644.00
-0.70
-1.02

CQ
5540.0
5290.0
5260.0
153.74
0.335
5363.33
1.82
1.50

CS









CX
5010.0
4810.0
4657.0
177.02
0.422
4825.67
-0.07
-0.39

D
4780.0
4605.0
4721.0
89.04
0.209
4702.00
-0.50
-0.82

OD
5030.0
4790.0
4690.0
174.74
0.407
4836.67
-0.03
-0.35

DE
4232.0
4254.0
4307.0
38.55
0.090
4264.33
-2.04
-2.35

DG
4540.0
4740.0
4660.0
100.66
0.239
4646.67
-0.70
-1.01

DH
5550.0
5458.0
5578.0
62.80
0.143
5528.67
2.40
2.08

DI
5060.0
4590.0
4640.0
258.14
0.562
4763.33
-0.29
-0.61

DJ








•
DL
4875.0
4855.0
4947.0
48.37
0.110
4892.33
0.17
-0.15

DM
4700.0
4800.0
4800.0
57.74
0.120
4766.67
-0.27
-0.59

DR








•
• =
No data submitted

TAG SYMBOLS

1T = Above control limit
0 =
v-	
Insufficient data
x =
Determined to be an outlier
J! = Below control limit
	JJ
-------
/?	
EMSL-LV Performance Evaluation: Tritium in Water,
4-Mar-1994
5/10 |
Tritium







\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DT
5300.0
4900.0
5000.0
208.17
0.478
5066.67
0.78
0.46

DY








• '
E
4934.0
4861.0
4964.0
52.99
0.123
4919.67
0.26
-0.06

EA
4938.0
4947.0
4994.0
30.06
0.067
4959.67
0.40
0.08

EB
4770.0
4780.0
4830.0
32.15
0.072
4793.33
-0.18
-0.50

EH
4370.0
4180.0
4350.0
104.40
0.227
4300.00
-1.91
-2.23

EL
4311.0
4601.0
4513.0
148.69
0.347
4475.00
-1.30
-1.62

EN
5360.0
4830.0
4050.0
658.96
2.079
4746.67
-0.34
-0.66

BW








•
EX
4721.0
4746.0
4530.0
118.15
0.258
4665.67
-0.63
-0.95

FA
4714.0
4464.0
4547.0
127.33
0.299
4575.00
-0.95
-1.27

FB








•
FE
4660.0
4700.0
4740.0
40.00
0.096
4700.00
-0.51
-0.83

FJ
4721.0
5180.0
5869.0
577.83
1.710
5256.67
1.44
1.12

FK
4310.0
4570.0
4400.0
132.04
0.311
4426.67
-1.47
-1.79

FL
4642.0
4320.0
4574.0
169.72
0.385
4512.00
-1.17
-1.49

FU
4026.0
3931.0
4092.0
80.93
0.193
4016.33
-2.91
-3.22
Ji
FZ
4700.0
4800.0
4700.0
57.74
0.120
4733.33
-0.39
-0.71

GE
4855.0
4947.0
4875.0
48.37
0.110
4892.33
0.17
-0.15

GO
5359.0
5331.0
5596.0
145.59
0.317
5428.67
2.05
1.73

GQ
4400.0
4300.0
4300.0
57.74
0.120
4333.33
-1.79
-2.11

m
4750.0
4746.0
4748.0
2.00
0.005
4748.00
-0.34
-0.66

HJ
4850.0
4800.0
4760.0
45.11
0.108
4803.33
-0.15
-0.47

HK
4760.0
4797.0
5062.0
164.73
0.361
4873.00
0.10
-0.22

HP
5550.0
5600.0
5510.0
45.09
0.108
5553.33
2.48
2.16

HR
4964.0
5102.0
5220.0
128.14
0.306
5095.33
0.88
0.56

HU
4671.0
4673.0
4700.0
16.23
0.035
4681.33
-0.57
-0.89

I
4625.0
4605.0
4599.0
13.63
0.031
4609.67
-0.83
-1.14

IA








•
IC
3513.0
3517.0
3503.0
7.25
0.017
3511.00
-4.68
-5.00

n
338.0
464.0
340.0
72.18
0;161
380.67
-16.65
-1697
X
IU
4595.0
4590.0
4887.0
170.05
0.355
4690.67
-0.54
-0.86

J
4786.0
4814.0
4961.0
94.00
0.209
4853.67
0.03
-0.29

JE
4895.0
5170.0
5372.0
239.43
0.570
5145.67
1.05
0.74

JG








ft
JI
4560.0
4920.0
4970.0
223.69
0.490
4816.67
-0.10
-0.42

JK
4902.0
4906.0
4891.0
7.74
0.018
4899.67
0.19
-0.13

JM








•
JN
4900.0
4900.0
4800.0
57.74
0.120
4866.67
0.08
-0.24

JP
4929.0
4990.0
4992.0
35.83
0.075
4970.33
0.44
0.12

JR
4420.0
4230.0
5190.0
508.36
1.282
4613.33
-0.81
-1.13

JS
4580.0
4850.0
4230.0
310.86
0.741
4553.33
-1.02
-1.34

JY
4280.0
4900.0
5030.0
400.79
0.897
4736.67
-0.38
-0.70

K
5886.0
5717.0
6055.0
169.00
0.404
5886.00
3.65
3.33
ft
KH
4978.0
4968.0
5027.0
31.60
0.071
4991.00
0.51
0.19

• =
No data submitted

TAG SYMBOLS

IT 3 Above control limit
[0-
Insufficient data
X 3
Determined to be an outlier
li 3 Below control limit
'J
-------
/?
6/10 EMSL-LV Performance Evaluation: Tritium in Water,
4-Mar-1994

\
Tritium








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
KM
6011.0
5145.0
5388.0
446.68
1.068
5514.67
2.35
2.03

KX
4650.0
4570.0
4590.0
41.63
0.096
4603.33
-0.85
-1.17

L
5457.0
5215.0
5133.0
168.45
0.387
5268.33
1.48
1.17

LA








•
LE
5600.0
5470.0
5260.0
171.57
0.407
5443.33
2.10
1.78

LF
4900.0
5100.0
5000.0
100.00
0.239
5000.00
0.54
0.22

LM








•
LR
4621.0
4659.0
4546.0
57.51
0.135
4608.67
-0.83
-1.15

LS








•
LT
4460.0
4500.0
4980.0
289.37
0.622
4646.67
-0.70
-1.01

MA
4312.0
4416.0
4388.0
53.81
0.124
4372.00
-1.66
-1.98

ML
5400.0
5200.0
5300.0
100.00
0.239
5300.00
1.60
1.28

MN
4430.0
4470.0
4450.0
20.00
0.048
4450.00
-1.38
-1.70

MQ
4790.0
4600.0
4740.0
98.49
0.227
4710.00
-0.47
-0.79

MS
4210.0
4240.0
4430.0
119.30
0.263
4293.33
-1.93
-2.25

MT








•
MV
4318.0
4372.0
4483.0
84.12
0.197
4391.00
-1.59
-1.91

N
4642.0
4503.0
4683.0
94.35
0.215
4609.33
-0.83
-1.15

NB
5142.0
4407.0
4398.0
426.97
0.890
4649.00
-0.69
-1.01

NH
4757.0
4954.0
4746.0
117.04
0.249
4819.00
-0.09
-0.41

NI
5607.0
5947.0
5031.0
463.04
1.181
5528.33
2.40
2.08

NJ
4719.0
4521.0
4785.0
137.39
0.316
4675.00
-0.60
-0.92

NO
5196.0
5344.0
5575.0
191.01
0.453
5371.67
1.85
1.53

NP
4456.0
4364.0
4181.0
139.99
0.329
4333.67
-1.79
-2.11

O
5097.0
5116.0
5048.0
35.08
0.081
5087.00
0.85
0.53

OA
4600.0
4700.0
4700.0
57.74
0.120
4666.67
-0.63
-0.94

OK
5570.0
5333.0
5305.0
145.59
0.317
5402.67
1.96
1.64

OL
4545.0
4766.0
4233.0
267.79
0.637
4514.67
-1.16
-1.48

OM








•
OT
4420.0
4400.0
4430.0
15.28
0.036
4416.67
-1.50
-1.82

OX
¦p
4896.0
4708.0
4816.0
94.35
0.225
4806.67
-0.13
-0.45

XT
PB
4853.0
5125.0
5007.0
136.39
0.325
4995.00
0.53
0.21

PC
4353.0
4723.0
4576.0
186.30
0.442
4550.67
-1.03
-1.35

PD








•
PE
5020.0
4673.0
4662.0
203.59
0.428
4785.00
-0.21
-0.53

PI
5023.0
4985.0
5066.0
40.54
0.097
5024.67
0.63
0.31

PJ
4881.0
4822.0
5079.0
134.62
0.307
4927.33
0.29
-0.03

PM
4838.0
4909.0
4958.0
60.33
0.143
4901.67
0.20
-0.12

PP
4467.0
4378.0
4549.0
85.53
0.204
4464.67
-1.33
-1.65

PQ
5418.0
5076.0
5176.0
175.85
0.409
5223.33
1.33
1.01

PT
4673.0
4761.0
4849.0
87.99
0.210
4761.00
-0.29
-0.61

PU








•
PV
4930.0
4470.0
4460.0
268.51
0.562
4620.00
-0.79
-1.11

FY








•
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
= Below control limit
v*	'J
-------
/S			
f	s\
EMSL-LV Performance Evaluation: Tritium in Water, 4-Mar-1994	7/10
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
Q
5120.0
5098.0
4914.0
113.12
0.246
5044.00
0.70
0.38

QA








•
QB
4940.0
4970.0
4970.0
17.32
0.036
4960.00
0.40
0.08

QC
4361.0
4507.0
4793.0
219.75
0.517
4553.67
-1.02
-1.34

QD
4771.0
4806.0
5128.0
196.79
0.427
4901.67
0.20
-0.12

QI
10244.0
9133.0
9681.0
565.52
1.626
9686.00
16.97
16,66
X
QJ








•
QK
6316.0
6281.0
6192.0
63.93
0.148
6263.00
4.97
4.65
It
QL
5547.0
5569.0
5557.0
10.95
0.026
5557.67
2.50
2.18

QM
4685.0
4819.0
4743.0
67.19
0.160
4749.00
-0.34
-0.66

QP
6127.0
6082.0
6046.0
40.58
0.097
6085.00
4.35
4.03
It
QQ
4232.0
4336.0
4461.0
114.66
0.274
4343.00
-1.76
-2.08

QT
5036.0
5068.0
4977.0
46.16
0.109
5027.00
0.64
0.32

QU
5577.0
6018.0
7456.0
982.60
3.375
6350.33
5.28
4.96
It
QW
.5578.0
5693.0
5085.0
322.99
0.727
5452.00
2.13
1.81

ox
5887.0
5981.0
5957.0
48.82
0.112
5941.67
3.85
3.53
ft
QZ
4989.0
4889.0
4878.0
61.17
0.133
4918.67
0.26
-0.06

R
4959.0
4959.0
4955.0
1.96
0.005
4957.67
0.40
0.08

RB
4166.0
4685.0
4776.0
329.07
0.729
4542.33
-1.06
-1.38

RC








•
RF








•
RH
4323.0
4140.0
4381.0
125.79
0.288
4281.33
-1.98
-2.30

KL
8133.0
8100.0
8050.0
41.81
0.099
8094.33
11.39
11.07
X
RM
4616.0
4509.0
4564.0
53.50
0.128
4563.00
-0.99
-1.31

RO
5073.0
4973.0
5795.0
448.51
0.983
5280.33
1.53
1.21

RQ
3910.0
3460.0
3640.0
226.50
0.538
3670.00
-4.12
-4.44
il
RR
4951.0
4872.0
4864.0
48.08
0.104
4895.67
0.18
-0.14

RS








•
RU
4042.0
4079.0
3947.0
68.10
0.158
4022.67
-2.88
-3.20
I
RV
903.0
441.0
179.0
366.58
0,866
507;67
>1621
-15.53
X
RX








*•
S
4900.0
5000.0
4950.0
50.02
0.120
4950.00
0.37
0.05

SA








•
SC
4608.0
4275.0
4871.0
298.69
0.713
4584.67
-0.91
-1.23

SD
4805.0
4320.0
4750.0
265.56
0.580
4625.00
-0.77
-1.09

SF
fiT
4115.0
3940.0
3732.0
191.74
0.458
3929.00
-3.21
-3.53
li
91
SE








•
SM
4730.0
4700.0
4970.0
147.99
0.323
4800.00
-0.16
-0.48

SN
4910.0
4590.0
4550.0
197.32
0.430
4683.33
-0.57
-0.89

SQ









ss
5468.0
5442.0
5533.0
46.89
0.109
5481.00
2.23
1.91

ST
4980.0
5240.0
5050.0
134.54
0.311
5090.00
0.86
0.54

su
4906.0
4427.0
4617.0
241.20
0.573
4650.00
-0.68
-1.00

sw









• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
= Below control limit
-------
8/10	EMSL-LV Performance Evaluation: Tritium in Water, 4-Mar-1994
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SZ
4800.0
4820.0
4810.0
10.10
0.024
4810.00
-0.12
-0.44

T
4700.0
4700.0
4620.0
46.19
0.096
4673.33
-0.60
-0.92

TA








•
TC
4300.0
3600.0
4000.0
351.19
0.837
3966.67
-3.08
-3.40
11
TD
4260.0
4080.0
4100.0
98.66
0.215
4146.67
-2.45
-2.77

TE
5084.0
5021.0
4944.0
70.11
0.167
5016.33
0.60
0.28

TF
14228.0
14770.0
15159.0
467.61
1.216
14719.00
34.62
34.30
X
TG
5158.0
4958.0
4730.0
214.16
0.512
4948.67
0.36
0.04

TH
6300.0
6000.0
6700.0
351.19
0.837
6333.33
5.22
4.90
it
TI
5000.0
4950.0
4880.0
60.29
0.143
4943.33
0.34
0.03

TL
3921.0
4034.0
4233.0
157.97
0.373
4062.67
-2.74
-3.06

TO
5850.0
5970.0
5870.0
64.31
0.143
5896.67
3.69
3.37
n
TQ
5108.0
5077.0
4726.0
212.17
0.457
4970.33
0.44
0.12

TS








•
TU
5122.0
5135.0
5176.0
28.21
0.065
5144.33
1.05
0.73

TV








•
TX
10030.0
10120.0
9750.0
192.95
0.442
9966.07
17.96
17.64
X
U
5080.0
5100.0
4870.0
127.42
0.275
5016.67
0.60
0.28

UB








•
UD
5034.0
5043.0
5018.0
12.64
0.030
5031.67
0.65
0.34

UE
4628.0
4735.0
4805.0
89.15
0.212
4722.67
-0.43
-0.75

UH








•
UI








•
UK
4900.0
4800.0
5000.0
100.00
0.239
4900.00
0.19
-0.13

UL
4935.0
4908.0
4932.0
14.78
0.032
4925.00
0.28
-0.04

UM








•
UN
5270.0
5380.0
5050.0
168.03
0.395
5233.33
1.36
1.04

uo
3560.0
3340.0
3330.0
130.00
0.275
3410.00
-5.03
-5.35

UP
4410.0
4460.0
4780.0
200.75
0.442
4550.00
-1.03
-1.35

us








•
UT
4747.0
4926.0
5025.0
140.91
0.332
4899.33
0.19
-0.13

UW
5005.0
5185.0
5104.0
90.14
0.215
5098.00
0.89
0.57

UX








•
UY
4696.0
4670.0
4698.0
15.62
0.033
4688.00
-0.55
-0.87

VC
4568.0
3747.0
4396.0
432.98
0.982
4237.00
-2.13
-2.45

VE








•
VG
5080.0
4720.0
4880.0
180.37
0.430
4893.33
0.17
-0.15

VI








*
VL
5026.0
4986.0
5064.0
39.00
0.093
5025.33
0.63
0.31

VM








•
VN
0.0
0.0






0
VQ
4969.0
4953.0
5038.0
45.18
0.102
4986.67
0.50
0.18

W
4936.0
4963.0
5046.0
57.34
0.132
4981.67
0.48
0.16
IT
•
X
Y
6290.0
6119.0
6393.0
138.40
0.328
6267.33
4.99
4.67
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 = Insufficient data	x s Determined to be an outlier	11 = Below control limit
-------
(? ^
EMSL-LV Performance Evaluation: Tritium in Water, 4-Mar-1994	9/10
^			,			¦	- - .			J
r'	— -\
Tritium
Exper. Rng anal	Normalized deviation
Lab Res. 1 Res. 2	Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
~Z 4806.0 4821.0 4796.0 12.64 0.030 4807.67 -0.13 ^045
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
380.67
X
n
4584.67

SC
4800.00
SM
507.67
X
RV
4603.33

KX
4803.33
HJ
3410.00
U
uo
4608.67

LR
4806.67
OX
3486.67
a
BW
4609.33

N
4807.67
Z
3511.00
u
IC
4609.67

I
4810.00
SZ
3670.00

RQ
4613.33

JR
4814.00
BB
3929.00
n
SF
4620.00

PV
4816.67
JI
3966.67
u
TC
4625.00

SD
4819.00
NH
4016.33
u
FU
4640.00

CC
4823.33
BC
4022.67
u
RU
4644.00

CP
4825.67
CX
4062.67
u
TL
4646.67

LT
4833.33
CJ
4146.67

TD
4646.67

DG
4836.67
DD
4237.00

VC
4649.00

NB
4843.33
CA
4252.67

A
4650.00

su
4850.00
AI
4264.33

DE
4661.00

CG
4853.67
J
4281.33

RH
4665.67

EX
4855.33
AP
4293.33

MS
4666.67

OA
4866.67
JN
4300.00

EH
4673.33

T
4873.00
HK
4333.33

GQ
4675.00

NJ
4873.67
BL
4333.67

NP
4675.33

CM
4874.00
AF
4343.00

QQ
4681.33

HU
4892.33
GE
4372.00

MA
4683.33

SN
4892.33
DL
4391.00

MV
4688.00

UY
4893.33
VG
4416.67

OT
4690.67

IU
4895.67
RR
4426.67

FK
4700.00

FE
4899.33
UT
4450.00

MN
4702.00

D
4899.67
JK
4464.67

PP
4710.00

MQ
4900.00
UK
4473.33

CO
4722.67

UE
4900.00
CE
4475.00

EL
4730.00

AW
4901.67
QD
4512.00

FL
4733.33

FZ
4901.67
PM
4514.67

OL
4736.67

JY
4918.67
QZ
4533.33

BO
4746.67

EN
4919.67
E
4533.33

BG
4748.00

HI
4925.00
UL
4542.33

RB
4749.00

QM
4927.33
PJ
4550.00

UP
4761.00

PT
4943.33
TI
4550.67

PC
4763.33

DI
4948.67
TG
4552.00

AZ
4766.67

DM
4950.00
S
4553.33

JS
4783.33

AH
4953.33
AE
4553.67

QC
4785.00

PE
4957.67
R
4563.00

RM
4787.00

AY
4958.00
C
4575.00

FA
4793.33

EB
4959.67
EA
• = No data submitted
0 = Insufficient data
	

TAG SYMBOLS
x = Determined to be an outlier
ft 3 Above control limit
U = Below control limit
-------
10/10
EMSL-LV Performance Evaluation: Tritium in Water, 4-Mar-1994
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
4960.00

QB
5095.33
HR
5452.00

QW
4970.33

TQ
5098.00
UW
5481.00

ss
4970.33

JP
5100.00
AU
5514.67

KM
4981.67

W
5144.33
TU
5528.33

NI
4986.67

VQ
5145.67
JE
5528.67

DH
4991.00

KH
5148.00
BA
5553.33

HP
4995.00

PB
5190.67
AK
5557.67

QL
5000.00

LF
5223.33
PQ
5886.00
ft
K
5013.33

BI
5233.33
UN
5896.67
IT
TO
5016.33

TE
5234.00
AJ
5941.67
IT
QX
5016.67

U
5256.67
FJ
5085.00
ft
QP
5024.67

PI
5268.33
L
6090.00
ft
BM
5025.33

VL
5280.33
RO
6263.00
ft
QK
5027.00

QT
5300.00
ML
6267.33
ft
X
5031.67

UD
5363.33
CQ
6333.33
ft
TH
5044.00

Q
5371.67
NO
6350.33
ft
QU
5066.67

DT
5402.67
OK
8094.33
X
RL
5087.00

O
5428.67
GO
9686.00
X
QI
5090.00

ST
5443.33
LE
9966.67
X
TX





14719.00
X
TF
% responding labs

Frequency distribution



10-



-¦U
-4
-2	0	+2
Normalized deviation of the mean from the known value
+4
responding labs
Frequency distribution
+6
10-


-6
—r-
-4
-2	0	+2
Normalized deviation of the mean from the grand average
-r-
+4
+6
0
= No data submitted
= Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1T = Above control limit
II = Below control limit
-------
United States	Office of Research and	EPA/600/R-94/087
Environmental Protection	Development	March 1994
Agency	Washington, DC 20460
&EPA Plutonium in
Water Performance
Evaluation Study
A Statistical Evaluation of
the March 11,1994 Data
Library Use Only
RECEIVED
I
I EMSLLVUBRARYJ
PROPERTY OF
U.S. EPA
Las Vegas, NV 89119
-------
Plutonium in Water
Performance Evaluation Study
March 11, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
r\
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)
o
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Plutonium in Water; March 11, 1994.
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: Plutonium in Water, ll-Mar-1994
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 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.
-------
2/7	EMSL-LV Performance Evaluation: Plutonium in Water, ll-Mar-1994
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, EMSL-LV, 702/798-2104.
-------
EMSL-LV Performance Evaluation: Plutonium in Water, ll-Mar>1994
3/7
Plutonium-239
Statistical Summary
92 Participants
The known value of this nuclide is 27.6 pCi/1 with an expected precision of 2.8; the control limits
are 22.7 to 32.5; the warning regions are 22.7 to 24.4 and 30.8 to 32.5
20(21.7 %) Failed to respond
7(7.6 %) Outliers »
4(4.3 %) Out of control •'
but not an outlier
Statistic
54(58.7 %) Within all limits
Respondents
7(7.6 %) 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
25.54
3.95
15.61
15.47
-7.45
-0.52
26.20
-5.07
-0.35
Grand Avg 26.36
2.18
4.74
8.26
-4.50
-0.57
26.47
-4.11
-0.52
11(15.3 %) More than 3 norm. S.D. ,
7(9.7 %) Between 2 and 3 norm. S.D.'
6(50.0 %) Within 1 norm. S.D.
of known value
18(25.0 %) Between 1 and 2 norm. S.D.
-------
4/7	EMSL-LV Performance
Evaluation:
Plutonium in Water, 11-Mar-1994
Plutonium-239
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
• (grand-avg) (known) Tag
A
28.8
29.0
28.1
0.47
0.190
28.63
1.41
0.64
AH
28.3
27.1
26.7
0.83
0.338
27.37
0.62
-0.14
AI







•
AZ
29.5
28.2
26.3
1.61
0.675
28.00
1.02
0.25
BB







•
BC
26.3
26.9
26.6
0.30
0.127
26.60
0.15
-0.62
BG
26.6
27.7
25.8
0.95
0.401
26.70
0.21
-0.56
BG
24.9
24.2
24.6
0.35
0.148
24.57
-1.11
-1.88
BG
25.6
25.9
27.0
0.74
0.295
26.17
-0.12
-0.89
BK
18.1
19.7
17.8
1.02
0.401
18.53
-4.84
-5.61 x
BL
26.6
26.4
26.8
0.20
0.084
26.60
0.15
-0.62
BM
28.3
27.9
27.7
0.31
0.127
27.97
1.00
0.23
BO
25.3
27.1
25.7
0.95
0.380
26.03
-0.20
-0.97
CA
28.6
27.1
28.8
0.93
0.359
28.17
1.12
0.35
CJ
26.0
25.0
25.0
0.58
0.211
25.33
-0.63
-1.40
CK
20.1
21.3
23.7
1.83
0.759
21.70
-2.88
-3.65 U
CM
25.9
26.7
26.0
0.44
0.169
26.20
-0.10
-0.87
CO
23.2
26.9
30.6
3.70
2.069
26.90
0.34
-0.43
CQ
25.2
25.0
25.7
0.36
0.148
25.30
-0.65
-1.42
CS
28.1
28.4
29.2
0.57
0.232
28.57
1.37
0.60
CX
27.4
26.3
28.0
0.86
0.359
27.23
0.54
-0.23
D
22.8
22.8
22.4
0.23
0.084
22.67
-2.28
-3.05 H
DO
23.5
28.2
27.7
2.58
0.991
26.47
0.07
-0.70
DT
26.6
24.9
28.3
1.70
0.717
26.60
0.15
-0.62
E
24.7
24.8
25.3
0.32
0.127
24.93
-0.88
-1.65
EL







•
FJ
22.3
25.9
20.5
2.75
1.265
22.90
-2.14
-2.91
FU
20.0
23.6
25.9
2.97
1.466
23.17
-1.97
-2.74
FZ
27.9
26.1
33.5
3.86
2.069
29.17
1.74
0.97
J
25.8
27.9
25.8
1.21
0.443
26.50
0.09
-0.68
JE
30.9
28.3
29.5
o
CO
0.548
29.57
1.98
1.22
JK
28.6
24.9
28.6
2.14
0.781
27.37
0.62
-0.14
JP
29.2
28.8
28.4
0.40
0.169
28.80
1.51
0.74
JS
28.1
28.1
28.0
0.06
0.021
28.07
1.06
0.29
JY
21.2
20.6
20.8
0.31
0.127
20.87
-3.40
-4.17 II
KH
26.6
26.6
26.2
0.23
0.084
26.47
0.07
-0.70
LT
26.1
25.9
26.1
0.12
0.042
26.03
-0.20
-0.97
MS
25.2
25.5
27.0
0.96
0.380
25.90
-0.28
-1.05
NH
25.8
25.6
26.5
0.47
0.190
25.97
-0.24
-1.01
NI







•
NJ
26.0
24.0
27.0
1.53
0.633
25.67
-0.43
-1.20
NK







•
OA








OB
25.2
25.8
26.3
0.55
0.232
25.77
-0.37
-1.13
OK








in in
• 0
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
11 s Below control limit
-------
EMSL-LVPerformance Evaluation: Plutonium in Water, ll-Mar-1994	5/7
Plutonium-239
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
OS
29.1
28.2
31.8
1.87
0.759
29.70
2.07
1.30

PM
24.0
25.0
25.0
0.58
0.211
24.67
-1.05
-1.81

PQ








•
PV
20.2
14.1
18.2
3.11
1.546
17;50
-5.48
-6.25
X
PW
15.0
13.7
15-.4
0.89
0.369
14.70
-7.21
-7.98
X
QC
26.5
27.3
26.3
0.53
0.211
26.70
0.21
-0.56

QJ
26.0
23.4
26.1
1.53
0.570
25.17
-0.74
-1.51

QQ








•
QU
30.5
29.2
30.1
0.67
0.274
29.93
2.21
1.44

QZ
27.0
26.8
26.5
0.25
0.105
26.77
0.25
-0.52

RC
25.7
25.1
26.0
0.46
0.190
25.60
-0.47
-1.24

RF








•
RL
12.4
9.9
10.9
1.26
0.527
11.07
•9.46
-10.23
X
RR
26.3
28.0
26.4
0.95
0.359
26.90
0.34
-0.43

RV
14.1
I8.4;
16.0
2.15
0.907
16.17
-6.30
-7.07
X
SC
28.2
27.8
27.4
0.40
0.169
27.80
0.89
0.12

SD
29.0
29.1
27.4
0.95
0.359
28.50
1.33
0.56

SF
23.4
23.4
23.5
0.06
0.021
23.43
-1.81
-2.58

SI
13;7
14,1
12.0
1.12
0.443
13.27
-8.10
-8.87
X
SM
29.4
27.9
29.0
0.78
0.316
28.77
1.49
0.72

ss
24.7
24.1
25.2
0.55
0.232
24.67
-1.05
-1.81

ST
25.0
26.6
27.0
1.06
0.422
26.20
-0.10
-0.87

SW
32.0
29.1
32.1
1.70
0.633
31.07
2.91
2.14

SZ
25.4
25.6
24.9
0.36
0.148
25.30
-0.65
-1.42

TD








•
TE
24.8
23.1
24.2
0.86
0.359
24.03
-1.44
-2.21

TG
26.3
26.0
26.3
0.17
0.063
26.20
-0.10
-0.87

TH








•
TI
23.9
24.6
24.0
0.38
0.148
24.17
-1.36
-2.12

TK








•
TL
21.6
21.4
18.3
1.85
0.696
20.43
-3.66
-4.43

TQ
26.2
25.7
26.0
0.25
0.105
25.97
-0.24
-1.01

TS
26.6
27.6
26.8
0.53
0.211
27.00
0.40
-0.37

TV








•
UB








•
UE
27.2
26.2
26.5
0.51
0.211
26.63
0.17
-0.60

UN
33.2
34.9
35.7
1.28
0.527
34.60
5.10
4.33
X
uw








•
VB
26.5
26.2
25.6
0.46
0.190
26.10
-0.16
-0.93

VC








•
VE








*
VG
32.1
33.5
30.9
1.30
0.548
32.17
3.59
2.82

VI








•
VO
25.7
25.6
24.7
0.55
0.211
25.33
-0.63
-1.40

VQ








•
111 I"
• <3
	V
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
U s Below control limit
	jj
-------
(F-
6/7
EMSL-LV Performance Evaluation: Plutonium in Water, ll-Mar-1994
Plutonium-239
Lab Res. 1 Res. 2
Exper. Rng anal	Normalized deviation
^ea- 3	Sigma (R + SR) Average (grand-avg) (known) Tag
W
Z
28.1
26.9
26.3
26.3
26.2
25.7
1.07
0.60
0.401
0.253
26.87
26.30
0.31
-0.04
-0.45
-0.80
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
11.07
X
RL
25.60

RC
26.87

W
13.27
X
SI
25.67

NJ
26.90

RR
14.70
X
PW
25.77

OB
26.90

CO
16.17
X
RV
25.90

MS
27.00

TS
17.50
X
PV
25.97

TQ
27.23

CX
18.53
X
BK
25.97

NH
27.37

JK
20.43

TL
26.03

LT
27.37

AH
20.87
II
JY
26.03

BO
27.80

SC
21.70
I
CK
26.10

VB
27.97

BM
22.67

D
26.17

BG
28.00

AZ
22.90

FJ
26.20

TG
28.07

JS
23.17

FU
26.20

ST
28.17

CA
23.43

SF
26.20

CM
28.50

SD
24.03

TE
26.30

Z
28.57

CS
24.17

TI
26.47

KH
28.63

A
24.57

BG
26.47

DO
28.77

SM
24.67

SS
26.50

J
28.80

JP
24.67

PM
26.60

DT
29.17

FZ
24.93

E
26.60

BL
29.57

JE
25.17

QJ
26.60

BC
29.70

OS
25.30

SZ
26.63

UE
29.93

QU
25.30

CQ
26.70

QC
31.07

sw
25.33

vo
26.70

BG
32.17

VG
25.33

CJ
26.77

QZ
34.60
X
UN
% responding labs

Frequency distribution




10-
4—
Jill
llli.

-6
-2	0	+2
Normalized deviation of the mean from the known value
+4
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
U- s Below control limit
-------
EMSL-LV Performance Evaluation: Plutonium in Water, 11-Mar-1994
7/7
Plutonium-239
% responding labs	Frequency distribution
10-
^ t ¦ 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-94/121A
Environmental Protection	Development	July 1994
Agency	Washington, DC 20460
Blind-A Performance
Evaluation Study
A Statistical Evaluation of
the April 19,1994 Data
Library Use Only
0014»stS4.121a
-------
Blind-A
Performance Evaluation Study
April 19, 1994
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 Blind-A; April 19, 1994.
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.
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.
-------
(r
V
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
1/34
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.
-------
Cf
2/34
I
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
The Range AnaIysis(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 th» 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: Blind-A, 19-Apr-1994
3/34
Gross Alpha	Statistical Summary	216 Participants
The known value of this nuclide is 86.0 pCi/1 with an expected precision of 22.0; the control limits
are 47.8 to 124.2; the warning regions are 47.8 to 60.5 and 111.5 to 124.2
48(22.2 %) Failed to respond \
. 146(67.6 %) Within all limits
8(3.7 %) Outliers ' / \K
2(0.9 %) Out of control '
but not an outlier ^
r
Statistic
i i
Respondents
*"• 12(5.6 %) In warning zone
but within control
Non-outliers
Mean
88.55
Grand Avg 84.40
Std. Dev.
24.95
14.63
Variance
622.58
214.02
% Coef. of Var.
28.18
17.33
% deviation of mean from known value
2.96
-1.87
Norm. dev. of mean from known value
0.10
-0.11
Median
84.00
83.67
% deviation of median from known value
-2.33
-2.71
Norm. dev. of median from known value
-0.08
-0.16
10(6.0 %) More than 3 norm. S.D. •,
12(7.1 %) Between 2 and 3 norm. S.D.
. 107(63.7 %) Within 1 norm. S.D.
!	of known value
39(23.2 %) Between 1 and 2 norm. S.D.
-------
	








	^
4/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994


Gross Alpha







"V
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
102.0
102.0
106.0
2.31
0.107
103.33
1.49
1.36

AA
88.0
84.0
88.0
2.31
0.107
86.67
0.18
0.05

AE
237.0
234.0
226.0
6.24
0.322
232.00
11.62
11.49
X
AF
83.0
95.0
95.0
6.93
0.322
91.00
0.52
0.39

AI








•
AJ
81.0
81.0
79.0
1.15
0.054
80.33
-0.32
-0.45

AK
78.0
74.0
75.0
2.08
0.107
75.67
-0.69
-0.81

AL
81.0
80.0
77.0
2.08
0.107
79.33
-0.40
-0.52

AO
103.0
106.0
111.0
4.04
0.215
106.67
1.75
1.63

AP
82.0
71.0
79.0
5.69
0.295
77.33
-0.56
-0.68

AR
78.0
70.0
67.0
5.69
0.295
71.67
-1.00
-1.13

AU
107.0
101.0
111.0
5.03
0.268
106.33
1.73
1.60

AW
88.0
93.0
88.0
2.89
0.134
89.67
0.41
0.29

AZ
95.0
95.0
101.0
3.46
0.161
97.00
0.99
0.87

BA
85.0
87.0
88.0
1.53
0.081
86.67
0.18
0.05

BC
90.0
97.0
94.0
3.51
0.188
93.67
0.73
0.60

BG
120.0
110.0
90.0
15.28
0.805
106.67
1.75
1.63

BH
70.0
79.0
79.0
5.20
0.242
76.00
-0.66
-0.79

BK
88.0
85.0
90.0
2.52
0.134
87.67
0.26
0.13

BL









BM
85.0
88.0
80.0
4.04
0.215
84.33
0.00
-0.13

BN
120.0
113.0
120.0
4.04
0.188
117.67
2.62
2.49

BO
90.0
88.0
82.0
4.16
0.215
86.67
0.18
0.05

BS
96.0
101.0
99.0
2.52
0.134
98.67
1.12
1.00

BW








*
C
77.0
76.0
78.0
1.00
0.054
77.00
-0.58
-0.71

CA
70.0
75.0
75.0
2.89
0.134
73.33
-0.87
-1.00

CE
83.0
90.0
90.0
4.04
0.188
87.67
0.26
0.13

CG
78.0
77.0
80.0
1.53
0.081
78.33
-0.48
-0.60

CJ
75.0
81.0
78.0
3.00
0.161
78.00
-0.50
-0.63

CK
79.0
78.0
77.0
1.00
0.054
78.00
-0.50
-0.63

CM








•-
CO
100.0
94.0
98.0
3.06
0.161
97.33
1.02
0.89

CP








•
CQ
84.0
84.0
88.0
2.31
0.107
85.33
0.07
-0.05

CS
87.0
78.0
84.0
4.58
0.242
83.00
-0.11
-0.24

CX
105.0
105.0
109.0
2.31
0.107
106.33
1.73
1.60

D
91.0
90.0
89.0
1.00
0.054
90.00
0.44
0.31

DB
81.0
78.0
80.0
1.53
0.081
79.67
-0.37
-0.50

DD
92.0
89.0
90.0
1.53
0.081
90.33
0.47
0.34

DE
102.0
104.0
106.0
2.00
0.107
104.00
1.54
1.42

DG
62.0
73.0
54.0
9.54
0.510
63.00
-1.68
-1.81

DI








•
DL









DM








•
• =
No data submitted

TAG SYMBOLS

IT s Above control limit
[0_=
Insufficient data
x =
Determined to be an outlier
U = Below control limit
	-0
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
	—
5/34
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DO







•_
DS
81.0
88.0
88.0
4.04
0.188
85.67
0.10
-0.03
DT
88.0
71.0
83.0
8.74
0.456
80.67
-0.29
-0.42
DZ
86.0
82.0
83.0
2.08
0.107
83.67
-0.06
-0.18
E
86.0
80.0
83.0
3.00
0.161
83.00
-0.11
-0.24
EB
95.0
99.0
98.0
2.08
0.107
97.33
1.02
0.89
EH
51.0
52.0
50.0
1.00
0.054
51.00
-2.63
-2.76
EL








EO
90.0
90.0
87.0
1.73
0.081
89.00
0.36
0.24
ER
83.0
84.0
84.0
0.58
0.027
83.67
-0.06
-0.18
EV
75.0
77.0
77.0
1.15
0.054
76.33
-0.63
-0.76
EX







•
FE
l28;0
149.0
163*0
17.62
u.y4u
146.07
4.90
4.78 X
FF
94.0
93.0
89.0
2.65
0.134
92.00
0.60
0.47
FJ
68.0
69.0
69.0
0.58
0.027
68.67
-1.24
-1.36
FL
56.0
54.0
56.0
1.15
0.054
55.33
-2.29
-2.41
FN
130.0
118.0
122.0
6.11
0.322
123.33
3.07
2.94
FU
86.0
81.0
82.0
2.65
0.134
83.00
-0.11
-0.24
FZ
78.0
66.0
80.0
7.57
0.376
74.67
-0.77
-0.89
OE








GI








GQ
69.0
72.0
76.0
3.51
0.188
72.33
-0.95
-1.08
GT
77.0
82.0
83.0
3.21
0.161
80.67
-0.29
-0.42
GZ
70.0
73.0
68.0
2.52
0.134
70.33
-1.11
-1.23
HH







•
HI
75.0
80.0
78.0
2.52
0.134
77.67
-0.53
-0.66
HK
94.0
95.0
100.0
3.21
0.161
96.33
0.94
0.81
HL
104.0
104.0
104.0
0.00
0.000
104.00
1.54
1.42
HP
67.0
62.0
62.0
2.89
0.134
63.67
-1.63
-1.76
HU
167.0
158.0
16&0
2.66
0.134
156.00
5.64
£61 x
HX







•
I
60.0
64.0
59.0
2.65
0.134
61.00
-1.84
-1.97
IA








IC
88.0
84.0
80.0
4.00
0.215
84.00
-0.03
-0.16
ID
106.0
106.0
107.0
0.58
0.027
106.33
1.73
1.60
IE
96.0
100.0
89.0
5.57
0.295
95.00
0.83
0.71
IU








J
87.0
92.0
90.0
2.52
0.134
89.67
0.41
0.29
JE
78.0
83.0
93.0
7.64
0.403
84.67
0.02
-0.10
JG
102.0
105.0
112.0
5.13
0.268
106.33
1.73
1.60
JH







•
JN
78.0
66.0
71.0
6.03
0.322
71.67
-1.00
-1.13
JQ
77.0
89.0
86.0
6.24
0.322
84.00
-0.03
-0.16
JS
61.0
71.0
75.0
7.21
0.376
69.00
-1.21
-.1.34
JY
83.0
81.0
80.0
1.53
0.081
81.33
-0.24
-0.37
in I"
• Q
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
•U = Below control limit
-------
(, =
6/34

EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994

	^
Gross Alpha







\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
91.0
98.0
93.0
3.61
0.188
94.00
0.76
0.63

KE
82.0
83.0
75.0
4.36
0.215
80.00
-0.35
-0.47

KM








•
KT
100.0
110.0
118.0
9.02
0.483
109.33
1.96
1.84

KX
77.0
81.0
82.0
2.65
0.134
80.00
-0.35
-0.47

L
83.0
84.0
84.0
0.58
0.027
83.67
-0.06
-0.18

LF
74.0
81.0
80.0
3.79
0.188
78.33
-0.48
-0.60

LG
101.0
97.0
91.0
5.03
0.268
96.33
0.94
0.81

LL
81.0
80.0
86.0
3.21
0.161
82.33
-0.16
-0.29

LM








•
LR
100.0
70.0
67.0
18.25
0.886
79.00
-0.42
-0.55

LT
79.0
82.0
78.0
2.08
0.107
79.67
-0.37
-0.50

M
75.0
80.0
78.0
2.52
0.134
77.67
-0.53
-0.66

MA








9
MN








9
MO








9
MP








:'9
MQ
94.0
920
94.0
1.15
0.054
93.33
0.70
0.58

MS









MV
78.0
74.0
75.0
2.08
0.107
75.67
-0.69
-0.81

MY








•
N
97.0
93.0
99.0
3.06
0.161
96.33
0.94
0.81

NA
143.0
140.0
146.0
• 2.62
0.134
142.67
4.69
4.46
X
NG








¦ •
NH
140,0
141.0
139.0
1.00
0.064
140.00
4.38
4:26
X
NI








•
NJ
82.0
80.0
86.0
3.06
0.161
82.67
-0.14
-0.26

NK
63.0
65.0
57.0
4.16
0.215
61.67
-1.79
-1.92

NO
65.0
68.0
71.0
3.00
0.161
68.00
-1.29
-1.42

NT
84.0
88.0
86.0
2.00
0.107
86.00
0.13
0.00

O
91.0
91.0
89.0
1.15
0.054
90.33
0.47
0.34

OF
227.0
243.0
266.0
14.63
0.779
242.00
12.41
12,28
X
OS
74.0
75.0
74.0
0.58
0.027
74.33
-0.79
-0.92

OX
76.0
82.0
72.0
5.03
0.268
76.67
-0.61
-0.73

OY
94.0
97.0
104.0
5.13
0.268
98.33
1.10
0.97

P
78.0
78.0
75.0
1.73
0.081
77.00
-0.58
-0.71

PA
62.0
70.0
66.0
4.00
0.215
66.00
-1.45
-1.57

PB
85.0
81.0
79.0
3.06
0.161
81.67
-0.21
-0.34

PC
140.0
143.0
152.0
6.24
0.322
146.00
4.77
4.66
X
PG
100.0
92.0
97.0
4.04
0.215
96.33
0.94
0.81

PI








9'
PM
100.0
104.0
114.0
7.21
0.376
106.00
1.70
1.57

PP








9
PQ
72.0
73.0
70.0
1.53
0.081
71.67
-1.00
-1.13

PR
74.0
74.0
76.0
1.15
0.054
74.67
-0.77
-0.89

• s No data submitted

TAG SYMBOLS

It = Above control limit
0 = Insufficient data
^	
x =
Determined to be an outlier
11 = Below control limit
	Jj
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-19»4	7/34
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PT
40.0
39.0
37.0
1.53
0.081
38.67
-3.60
-3.73 U
PV
89.0
91.0
94.0
2.52
0.134
91.33
0.55
0.42
PW








PY







•
Q
46.0
50.0
52.0
3.06
0.161
49.33
-2.76
-2.89
QC







•
QJ
118.0
123.0
135.0
8.74
0.456
125.33
3.22
3.10 It
QK








QL







•-
QP
84.0
83.0
92.0
4.93
0.242
86.33
0.15
0.03
QQ
97.0
100.0
102.0
2.52
0.134
99.67
1.20
1.08
QT
72.0
90.0
64.0
13.32
0.698
75.33
-0.71
-0.84
QU
102.0
80.0
99.0
11.93
0.591
93.67
0.73
0.60
QW
98.0
126.0
115.0
14.11
0.752
113.00
2.25
2.13
QX
82.0
82.0
84.0
1.15
0.054
82.67
-0.14
-0.26
QY







> •
QZ
73.0
83.0
80.0
5.13
0.268
78.67
-0.45
-0.58
RC
70.0
74.0
72.0
2.00
0.107
72.00
-0.98
-1.10
RD
60.0
51.0
49.0
5.86
0.295
53.33
-2.45
-2.57
RE
106.0
99.0
96.0
5.13
0.268
100.33
1.25
1.13
RF
83.0
79.0
88.0
4.51
0.242
83.33
-0.08
-0.21
RG
79.0
77.0
77.0
1.15
0.054
77.67
-0.53
-0.66
RJ
98.0
88.0
95.0
5.13
0.268
93.67
0.73
0.60
RK







'm
RL







«
RM
83.0
75.0
70.0
6.56
0.349
76.00
-0.66
-0.79
HP








RR
73.0
71.0
70.0
1.53
0.081
71.33
-1.03
-M5
RV
82.0
78.0
81.0
2.08
0.107
80.33
-0.32
-0.45
RZ
83.0
82.0
83.0
0.58
0.027
82.67
-0.14
-0.26
S
83.0
84.0
85.0
1.00
0.054
84.00
-0.03
-0.16
sc
83.0
83.0
82.0
0.58
0.027
82.67
-0.14
-0.26
SD
88.0
87.0
87.0
0.58
0.027
87.33
0.23
0.10
SF
100.0
104.0
104.0
2.31
0.107
102.67
1.44
1.31
SI
49.0
58.0
56.0
4.73
0.242
54.33
-2.37
-2.49
SL
75.0
71.0
89.0
9.45
0.483
78.33
-0.48
-0.60
SM
67.0
75.0
86.0
9.54
0.510
76.00
-0.66
-0.79
SO
79.0
71.0
73.0
4.16
0.215
74.33
-0.79
-0.92
SR
60.0
64.0
63.0
2.08
0.107
62.33
-1.74
-1.86
ss
92.0
85.0
85.0
4.04
0.188
87.33
0.23
0.10
ST
65.0
71.0
74.0
4.58
0.242
70.00
-1.13
-1.26
SW
81.0
85.0
86.0
2.65
0.134
84.00
-0.03
-0.16
sx
69.0
80.0
66.0
7.37
0.376
71.67
-1.00
-1.13
sz
84.0
81.0
97.0
8.50
0.430
87.33
0.23
0.10
T
64.0
64.0
67.0
1.73
0.081
65.00
-1.53
-1.65
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
U = Below control limit
-------
/>
8/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TA
81.0
79.0
90.0
5.86
0.295
83.33
-0.08
-0.21

TD
114.0
106.0
105.0
4.93
0.242
108.33
1.88
1.76

TE
79.0
78.0
80.0
1.00
0.054
79.00
-0.42
-0.55

TG
75.0
75.0
104.0
16.74
0.779
84.67
0.02
-0.10

TH
84.0
89.0
88.0
2.65
0.134
87.00
0.21
0.08

TI
93.0
94.0
94.0
0.58
0.027
93.67
0.73
0.60

TL
103.0
104.0
110.0
3.79
0.188
105.67
1.67
1.55

TN
93.0
94.0
95.0
1.00
0.054
94.00
0.76
0.63

TQ
87.0
91.0
91.0
2.31
0.107
89.67
0.41
0.29

TS
64.0
76.0
65.0
6.66
0.322
68.33
-1.26
-1.39

TU








•
TY
88.0
82.0
85.0
3.00
0.161
85.00
0.05
-0.08

U
104.0
86.0
92.0
9.17
0.483
94.00
0.76
0.63

UA
102.0
110.0
94.0
8.00
0.430
102.00
1.39
1.26

UE
82.0
82.0
95.0
7.51
0.349
86.33
0.15
0.03

UG
105.0
103.0
102.0
1.53
0.081
103.33
1.49
1.36

UK








»-
UN
58.0
53.0
54.0
2.65
0.134
55.00
-2.31
-2.44

UP
86.0
93.0
93.0
4.04
0.188
90.67
0.49
0.37

UQ
88.0
84.0
88.0
2.31
0.107
86.67
0.18
0.05

uw
89.0
78.0
86.0
5.69
0.295
84.33
0.00
-0.13

UY








•
VA









VC








•
VG
97.0
102.0
93.0
4.51
0.242
97.33
1.02
0.817

VI








•
VJ
74.0
84.0
91.0
8.54
0.456
83.00
-0.11
-0.24

VM
119.0
207.0
15.0
96.11
8.914
113.67
2.30
2.18

VN








•
vo
57.0
62.0
53.0
4.51
0.242
57.33
-2.13
-2.26

VQ








•
VT
78.0
86.0
92.0
7.02
0.376
85.33
0.07
-0.05

W
115.0
107.0
115.0
4.62
0.215
112.33
2.20
2.07

WA








, «
X
55.0
67.0
72.0
8.74
0.456
64.67
-1.55
-1.68

Z
177.0
158.0
170.0
9.61
0.510
168.33
6.61
6.48
X
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
38.67
U
PT
55.33
FL
63.67
HP
49.33

Q
57.33
VO
64.67
X
51.00

EH
61.00
I
65.00
T
53.33

RD
61.67
NK
66.00
PA
54.33

SI
62.33
SR
68.00
NO
55.00

UN
63.00
DG
68.33
TS
• s No data submitted

TAG SYMBOLS

ft
= Above control limit
0 = Insufficient data

x a Determined to be an outlier

= Below control limit
-------
»	"		—
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994	9/34
	
Gross Alpha








Data sorted by Laboratory Averag
:e


Average Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
68.67
FJ
80.33

AJ
89.00

EO
69.00
JS
80.67

GT
89.67

TQ
70.00
ST
80.67

DT
89.67

J
70.33
GZ
81.33

JY
89.67

AW
71.33
RR
81.67

PB
90.00

D
71.67
sx
82.33

LL
90.33

O
71.67
PQ
'82.67

SC
90.33

DD
71.67
JN
82.67

RZ
90.67

UP
71.67
AR
82.67

QX
91.00

AF
72.00
RC
82.67

NJ
91.33

PV
72.33
GQ
83.00

VJ
92.00

FF
73.33
CA
83.00

FU
93.33

MQ
74.33
SO
83.00

E
93.67

n
74.33
OS
83.00

CS
93.67

RJ
74.67
PR
83.33

TA
93.67

QU
74.67
FZ
83.33

RF
93.67

BC
75.33
QT
83.67

L
94.00

U
75.67
MV
83.67

ER
94.00

TN
75.67
AK
83.67

DZ
94.00

K
76.00
SM
84.00

SW
95.00

IE
76.00
RM
84.00

S
96.33

PG
76.00
BH
84.00

JQ
96.33

N
76.33
EV
84.00

IC
96.33

LG
76.67
OX
84.33

uw
96.33

HK
77.00
P
84.33

BM
97.00

AZ
, 77.00
C
84.67

TG
97.33

VG
77.33
AP
84.67

JE
97.33

EB
77.67
RG
85.00

TY
97.33

CO
77.67
M
85.33

VT
98.33

OY
77.67
HI
85.33

CQ
98.67

BS
78.00
CK
85.67

DS
99.67

QQ
78.00
CJ
86.00

NT
100.33

RE
78.33
SL
86.33

UE
102.00

UA
78.33
LF
86.33

QP
102.67

SF
78.33
CG
86.67

UQ
103.33

UG
78.67
QZ
86.67

BO
103.33

A
79.00
TE
. 86.67

BA
104.00

HL
79.00
LR
86.67

AA
104.00

DE
79.33
AL
87.00

TH
105.67

TL
79.67
LT
87.33

SZ
106.00

PM
79.67
DB
87.33

SS
106.33

JG
80.00
KX
87.33

SD
106.33

ID
80.00
KE
87.67

CE
106.33

CX
80.33
RV
87.67

BK
106.33

AU
• s No data submitted

TAG SYMBOLS

It
s Above control limit
0 = Insufficient data
V-	

x = Determined to be an outlier
U
= Below control limit
	0
-------
	







	^
10/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994


Gross Alpha










Data sorted by Laboratory Averag



Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
106.67

BG
113.67

VM
145.00
X
PC
106.67

AO
117.67

BN
146.67
X
FE
108.33

TD
123.33

FN
156.00
X
HU
109.33

KT
125.33
IT
QJ
168.33
X
Z
112.33

W
140.00
X
NH
232.00
X
AE
113.00

QW
142.67
d
X
NA
242.00
X
OF
% responding labs

Frequency distribution
-



10-f
o


iii-i—

-2	6	+2	+4
Normalized deviation of the mean from the known value
+6
responding labs	Frequency distribution
104
0
.if	JT—-
0	+2
i	i	i *" i	i Ml	.	.
-6	-4	-2	t)	+2	+4,	+6
Normalized deviation of the mean from the grand average
0
= No data submitted
- Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
tt = Above control limit
U = Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994	11/34
Radium-226	Statistical Summary	216 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 3.0; the control limits
are 14.8 to 25.2; the warning regions are 14.8 to 16.5 and 23.5 to 25.2
Statistic	Respondents	Non-outliers
Mean
21.41
Grand Avg 19.72
Std. Dev.
11.67
4.23
Variance
136.15
17.93
% Coef. of Var.
54.51
21.47
% deviation of mean from known value
7.03
-1.39
Norm. dev. of mean from known value
0.12
-0.07
Median
19.43
19.40
% deviation of median from known value
-2.83
-3.00
Norm. dev. of median from known value
-0.05
-0.14
-------
f(	
12/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994

	
Radium-226








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
19.2
20.6
20.0
0.70
0.276
19.93
012
-0.04

AA








• '
AE
20.0
20.2
20.3
0.15
0.059
20.17
0.26
0.10

AF
19.5
19.5
18.8
0.40
0.138
19.27
-0.26
-0.42

AI








•
AJ
19.3
22.5
20.4
1.63
0.630
20.73
0.58
0.42

AK
18.5
19.6
20.2
0.86
0.335
19.43
-0.17
-0.33

AL
17.4
19.1
20.5
1.55
0.610
19.00
-0.42
-0.58

AO








%
AP
17.5
18.7
19.8
1.15
0.453
18.67
-0.61
-0.77

AR








i
AU
18.4
18.9
19.5
0.55
0.217
18.93
-0.46
-0.62

AW
18.1
18.4
18.4
0.17
0.059
18.30
-0.82
-0.98

AZ
14.6
15.9
16.9
1.15
0.453
15.80
-2.26
-2.42

BA
23.6
24.4
23.6
0.46
0.158
23.87
2.39
2.23

BC
15.0
15.2
15.9
0.47
0.177
15.37
-2.51
-2.68

BG
31.7
31.9
31.3
0.31
0.118
31.63
6.88
6.72
ft
BH
17.0
19.1
17.8
1.06
0.413
17.97
-1.01
-1.17

BK
20.2
20.0
20.2
0.12
0.039
20.13
0.24
0.08

BL








•
BM
16.3
15.3
15.1
0.64
0.236
15.57
-2.40
-2.56

BN
19.0
19.2
19.1
0.10
0.039
19.10
-0.36
-0.52

BO
16.3
16.1
16.2
0.10
0039
16.20
-2.03
-2.19

BS








V
BW








•
C
18.6
18.0
17.6
0.50
0.197
18.07
-0.96
-1.12

CA
15.9
16.7
18.2
1.17
0.453
16.93
-1.61
-1.77

CE
17.4
20.0
20.5
1.66
0.610
19.30
-0.24
-0.40

CG
17.1
17.9
18.7
0.80
0.315
17.90
-1.05
-1.21

CJ
14.0
16.0
17.0
1.53
0.591
15.67
-2.34
-2.50

CK
19.0
18.6
17.6
0.72
0.276
18.40
-0.76
-0.92

CM








'•i
CO









CP









CQ








•
cs
26.7
26.3
24.9
0.95
0.354
25.97
3.61
3.44

cx








• >
D








•
DB
20.2
19.1
19.0
0.67
0.236
19.43
-0.17
-0.33

DD









DE
20.9
20.9
20.9
0.01
0.000
20.90
0.68
0.52

DG








•
DI








•
DL









DM









• =
No data submitted

TAG SYMBOLS

1T s Above control limit
1 0 =
v-	
Insufficient data
x =
Determined to be an outlier
II = Below control limit
	jj
-------
f(	

EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
13/34
Radium-226







\
Lab
Res. 1
Res. 2

Exper.
Rng anal
,
Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO








' •
DS








' •
DT
18.2
20.2
21.4
1.62
0.630
19.93
0.12
-0.04

DZ
20.9
20.4
21.1
0.36
0.138
20.80
0.62
0.46

E
17.4
18.2
17.6
0.42
0.158
17.73
-1.15
-1.31

EB
33.8
35.1
31.2
1.99
0.768
33.37
7.88
7.72
IT
EH









EL
15.9
17.3
19.3
1.71
0.669
17.50
-1.28
-1.44

EO
20.1
19.9
20.0
0.10
0.039
20.00
0.16
0.00

ER
17.8
18.6
18.9
0.57
0.217
18.43
-0.74
-0.90

EV








9-
EX








•
FE
18.4
18.9
19.1
0.36
0138
18.80
-0.53
-0.69

FF








•
PJ








•
FL








•
FN
23.6
21.2
20.0
1.83
0.709
21.60
1.08
0.92

FU








9
FZ








•
GE








•
GI
16.3
18.4
20.9
2.30
0.906
18.53
-0.69
-0.85

GQ
11.1
10.4
9.8
0.65
0.256
10.43
-5.36
-5.52

GT








#
GZ








*
HH








•
HI








•
HK
18.6
20.3
21.3
1.37
0.532
20.07
0.20
0.04

HL
18.7
18.7
18.7
0.00
0.000
18.70
-0.59
-0.75

HP
24.7
22.5
24.9
1.33
0.473
24.03
2.49
2.33

HU
20.8
20.8
20.7
0.06
0.020
20.77
0.60
0.44

HX








•
I
16.8
19.1
19.3
1.39
0.492
18.40
-0.76
-0.92

IA








•
IC








•
ID
214
20.1
19.6
0.93
0.354
20.37
0.37
0.21

EE








•
IU








, • -
J
18.9
20.6
20.1
0.87
0.335
19.87
0.08
-0.08

JE
28.9
26.1
28.9
1.62
0.551
27.97
4.76
4.60
IT
JG
14.0
16.9
14.1
1.65
0.571
15.00
-2.73
-2.89

JH








•
JN
21.0
20.0
22.0
1.00
0.394
21.00
0.74
0.58

JQ








•
JS
16.4
20.9
18.7
2.25
0.886
18.67
-0.61
-0.77

JY
13.9
18.2
14.5
2.33
0.847
15.53
-2.42
-2.58

• =
No data submitted

TAG SYMBOLS

IT s Above control limit
0 S
V-	
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
	>j
-------
(, =
14/34
V-
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994

	^
**
Radium-226








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
18.2
19.6
19.5
0.78
0.276
19.10
-0.36
-0.52

HE








•
KM








•
KT








•
KX








* '•
L
18.7
18.8
18.9
0.10
0.039
18.80
-0.53
-0.69

LF









LG









LL








•
LM








•
LR
60*0
82.0
106.0
28.10
20.097
79.33
34.42

X
LT
19.2
19.2
18.7
0.29
0.098
19.03
-0.40
-0.56

M
23.0
26.0
23.0
1.73
0.591
24.00
2.47
2.31

MA








•
MN








-•
MO









MP








:• ^
MQ









MS









MV








•
MY









N
20.7
21.2
20.0
0.60
0.236
20.63
0.53
0.37

NA
118.4
119.9
1193;
0.76
0.296
119,20
67.43
57.27
&
NG








'• ¦
NH
14.2
15.5
14.9
0.65
0.256
14.87
-2.80
-2.96

NI








«
NJ
21.0
20.0
18.0
1.53
0.591
19.67
-0.03
-0.19

NK









NO
22.1
23.2
24.5
1.20
0.473
23.27
2.05
1.89

NT
19.8
20.2
20.6
040
0.158
20.20
0.28
0.12

0








•
OF
16.2
1.6.5
16.6
0.21
0.079
16.43
-1.90
-2.06

OS









OX
20.2
20.4
19.8
0.31
0.118
20.13
0.24
0.08

OY
18.7
18.5
19.0
0.25
0.098
18.73
-0.57
-0.73

P
20.2
20.7
21.4
0.60
0.236
20.77
0.60
0.44

PA








•
PB
20.0
20.2
20.2
0.12
0.039
20.13
0.24
0.08

PC
19.0
20.1
20.9
0.95
0.374
20.00
0.16
0.00

PG
18.3
17.5
18.2
0.44
0.158
18.00
-0.99
-1.15

PI








•
PM
16.0
16.0
16.0
0.00
0.000
16.00
-2.15
-2.31

PP
17.8
18.8
21.5
1.91
0.728
19.37
-0.21
-0.37

PQ








, •>-
PR








• ¦
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 s
	
Insufficient data
x =
Determined to be an outlier
U = Below control limit
	yj
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994	15 / 34
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PT
11.4
11.0
10.9
0.26
0.098
11.10
-4.98
-5.14

PV
27.6
24.9
23.0
2.31
0.906
25.17
3.14
2.98

PW
22.5
21.3
20.1
1.20
0.473
21.30
0.91
0.75

FY








•
Q
21.5
22.0
24.7
1.72
0.630
22.73
1.74
1.58

QC









QJ








•
QK








•
QL








•
QP









QQ








9
QT
7.3
9.2
10.4
1.56
0.610
8.97
-6.21
-6.37

QU
16.7
26.0
16.9
5.31
2.583
19.87
0.08
-0.08

QW









QX
33.4
32.3
32.9
0.55
0.217
32.87
7.59
7.43
It
QY
20.4
19.8
20.2
0.31
0.118
20.13
0.24
0.08

QZ
18.6
18.6
19.7
0.64
0.217
18.97
-0.44
-0.60

RC
23.4
21.2
20.9
1.37
0.492
21.83
1.22
1.06

RD
36.1
33.1
26.0
5.19
2.883
31.73
6.93
6.77
J
RE








' •
RF
21.8
21.4
20.2
0.83
0.315
21.13
0.81
0.65

RG









RJ








•
RK








•
RL









RM
20.3
21.2
17®
1.76
0.669
19.77
0.03
-0.13

RP








•
RR









RV
16.0
20.6
18.4
2.30
0.906
18.33
-0.80
-0.96

RZ
17.2
17.6
18.1
0.45
0.177
17.63
-1.21
-1.37

S
21.6
20.2
20.6
0.72
0.276
20.80
0.62
0.46

sc
20.0
20.8
19.9
0.49
0.177
20.23
0.29
6.13

SD
16.7
16.1
16.3
0.31
0.118
16.37
-1.94
-2.10

SF
21.0
18.2
17.9
1.71
0.610
19.03
-0.40
-0.56

SI
27.6
25.9
27.0
0.86
0.335
26.83
4.11
3.95
IT
SL








•
SM
9.0
8.5
8.2
0.40
0.158
8.57
-6.44
-6.60

SO








•
SR








•
SS
17.3
18.1
17.4
0.44
0.158
17.60
-1.23
-1.39

ST
18.8
18.8
20.1
0.75
0.256
19.23
-0.28
-0.44

SW








•
sx
16.5
18.6
17.9
1.07
0.413
17.67
-1.19
-1.35

sz
19.2
20.1
18.8
0.67
0.256
19.37
-0.21
-0.37

T
19.3
20.5
20.0
0.60
0.236
19.93
0.12
-0.04

• = No data submitted	TAG SYMBOLS	1T = Above control limit
I 0 = Insufficient data	x = Determined to be an outlier	11 = Below control limit
^	'J
-------
16/34

EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994


Radium-226








Lab
Res. 1
Res. 2

Exper.
Rng anal

•Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TA
22.6
23.5
25.5
1.48
0.571
23.87
2.39
2.23

TD
27.8
31.1
32.0
2.21
0.827
30.30
6.11
5.95
IT
TE
20.4
16.8
20.8
2.20
0.788
19.33
-0.22
-0.38

TG
8.7
10.9
9.2
1.15
0.433
9.60
-5.84
-6.00
II
TH
25.6
25.7
23.9
1.01
0.354
25.07
3.09
2.93

TI
23.6
21.2
20.2
1.75
0.669
21.67
1.12
0.96

TL
10.0
9.1
9.7
0.46
0.177
9.60
-5.84
-6.00

TN
20.4
22.4
24.5
2.05
0.807
22.43
1.57
1.40

TQ
19.0
17.0
21.9
2.46
0.965
19.30
-0.24
-0.40

TS
17.2
19.3
19.4
1.24
0.433
18.63
-0.63
-0.79

TU
19.2
19.0
18.6
0.31
0.118
18.93
-0.46
-0.62

TY








*
U
13.8
18.6
13.7
2.80
0.965
1537
-2.51
-2.68

UA








•
UE
21.9
21.2
22.6
0.70
0.276
21.9U
1.26
1.10

UG









UK








~
UN
17.8
18.4
19.8
1.03
0.394
18.67
-0.61
-0.77

UP
19.8
20.4
21.4
0.81
0.315
20.53
0.47
0.31

UQ
19.5
20.0
19.8
0.25
0.098
19.77
0.03
-0.13

UW
39.8
41.0
41.2
0.76
0.276
40.67
12.09
11.93
X
UY








•
VA








•
VC








•
VG
37.5
30.9
37.9
1.29
0.473
38.4$
10.80
10.64

VI









VJ








*
VM









VN









vo








•
VQ








•
VT
22.8
27.3
29.5
3.42
1.608
26.53
3.93
3.77
It
W
21.4
22.3
20.4
0.95
0.374
21.37
0.95
0.79

WA
19.4
19.4
19.5
0.06
0.020
19.43
-0.17
-0.33

X
17.5
22.4
19.0
2.51
0.965
19.63
-0.05
-0.21

Z








•
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
8.57
U
SM
14.87
NH
15.67
CJ
8.97
U
QT
15.00
JG
15.80
AZ
9.60

TG
15.37
BC
16.00
PM
9.60

TL
15.37
U
16.20
BO
10.43
u
GQ
15.53
JY
16.37
SD
11.10

PT
15.57
BM
16.43
OF
• s No data submitted

TAG SYMBOLS

ft
= Above control limit
0 s Insufficient data

x = Determined to be an outlier
u
= Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
17/34
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
16.93

CA
19.27

AF
20.77

P
17.50

EL
19.30

TQ
20.80

S
17.60

SS
19.30

CE
20.80

DZ
17.63

RZ
19.33

TE
20.90

DE
17.67

SX
19.37

SZ
21.00

JN
17.73

E
19.37

PP
21.13

RF
17.90

CG
19.43

WA
21.30

PW
17.97

BH
19.43

DB
21.37

W
18.00

PG
19.43

AK
21.60

FN
18.07

C
19.63

X
21.67

n
18.30

AW
19.67

NJ
21.83

RC
18.33

RV
19.77

UQ
21.90

UE
18.40

I
19.77

RM
22.43

TN
18.40

CK
19.87

QU
22.73

Q
18.43

ER
19.87

J
23.27

NO
18.53

GI
19.93

T
23.87

TA
18.63

TS
19.93

DT
23.87

BA
18.67

UN
19.93

A
24.00

M
18.67

JS
20.00

PC
24.03

HP
18.67

AP
20.00

EO
25.07

TH
18.70

HL
20.07

HK
25.17

PV
18.73

OY
20.13

QY
25.97
ft
CS
18.80

L
20.13

PB
26.53
It
VT
18.80

FE
20.13

OX
26.83
It
SI
18.93

AU
20.13

BK
27.97
It
JE
18.93

TU
20.17

AE
30.30
It
TD
18.97

QZ
20.20

NT
31.63
It '
BG
19.00

AL
20.23

SC
31.73
It
RD
19.03

SF
20.37

ID
32.87
It
QX
19.03

LT
20.53

UP
33.37
ft
EB
19.10

K
20.63

N
38.43
X
VG
19.10

BN
20.73

AJ
40.67
X
UW
19.23

ST
20.77

HU
79.33
119.20
X
X
LR
NA
% responding labs
1o-	
Frequency distribution
11^ ¦
J.


¦¦. M
¥F-
+4
+6
M
-6
-2	0	+2
Normalized deviation of the mean from the known value
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It s Above control limit
U s Below control limit

-------
^ =
18/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
Radium-226
% responding labs	 Frequency distribution
10-
B11|1bIb|B

a , ¦ ¦ y	,	1 ——T" -T""T""T- —T " T" - T* ¦ i	r
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
S\
19/34
Radium-228	Statistical Summary	216 Participants
The known value of this nuclide is 20.1 pCi/1 with an expected precision of 5.0; the control limits
are 11.4 to 28.8; the warning regions are 11.4 to 14.3 and 25.9 to 28.8
105(48.6 %) Failed to respond
2(0.9 %) Outliers
4( 1.9 %) Out of control
but not an outlier
Statistic
98(45.4 %) Within all limits
Respondents
7(3.2 %) In warning zone
but within control
Non-outliers
Mean
20.08
Grand Avg 20.07
Std. Dev.
4.35
3.58
Variance
18.91
12.85
% Coef. of Var.
21.66
17.86
% deviation of mean from known value
-0.12
-0.16
Norm. dev. of mean from known value
-0.01
-0.01
Median
20.40
20.40
% deviation of median from known value
1.49
1.49
Norm. dev. of median from known value
0.07
0.08
6(5.4 %) More than 3 norm. S.D. •»
7(6.3 %) Between 2 and 3 norm. S.D.
70(63.1 %) Within 1 norm. S.D.
of Known value
28(25.2 %) Between 1 and 2 norm. S.D.
-------
(c	:—
20/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994

	^
Radium-228







-v
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
20.6
19.6
19.1
0.76
0.177
19.77
-0.10
-0.12

AA








9 ¦
AE
18.1
17.8
17.4
0.35
0.083
17.77
-0.80
-0.81

AF
19.3
19.2
19.7
0.26
0.059
19.40
-0.23
-0.24

AI
20.2
24.8
23.7
2.40
0.543
22.90
0.98
0.97

AJ
19.4
19.5
19.4
0.06
0.012
19.43
-0.22
-0.23

AK
19.8
19.0
19.5
0.40
0.095
19.43
-0.22
-0.23

AL
22.6
21.1
16.9
*2.95
0.673
20.20
0.05
0.03

AO








m
AP
16.3
17.3
18.2
0.95
0.224
17.27
-0.97
-0.98

AR








•
AU
16.8
18.7
8.7
5.31
1.345
14.73
-1.85
-1.86

AW
14.8
14.9
15.4
0.32
0.071
15.03
-1.74
-1.76

AZ
20.8
20.2
20.5
0.30
0.071
20.50
0.15
0.14

BA
20.5
23.9
20.8
1.88
0.402
21.73
0.58
0.57

BC
21.3
18.7
19.1
1.40
0.307
19.70
-0.13
-0.14

BG








•
BH
18.1
22.8
22.2
2.56
0.555
21.03
0.33
0.32

BK
18.7
19.0
16.9
1.14
0.248
18.20
-0.65
-0.66

BL








---
BM
19.5
20.3
19.6
0.44
0.095
19.80
-0.09
-0.10

BN








•
BO
18.0
18.1
18.1
0.06
0.012
18.07
-0.69
-0.70

BS








•
BW









C
19.6
18.5
17.6
1.00
0.236
18.57
-0.52
-0.53

CA
14.2
13.3
20.1
3.69
0.803
15.87
-1.46
-1.47

CE
19.9
18.9
20.3
0.72
0.165
19.70
-0.13
-0.14

CG
25.2
17.6
18.3
4.20
0.898
20.37
0.10
0.09

CJ
15.0
16.0
15.0
0.58
0.118
15.33
-1.64
-1.65

CK
22.0
20.2
21.9
1.01
0.213
21.37
0.45
0.44

CM








' *
CO









CP









ciQ








•
CS
15.3
15.1
15.8
0.36
0.083
15.40
-1.62
-1.63

CX








•
D









DB
21.0
20.9
19.8
0.67
0.142
20.57
0.17
0.16

DD









DE
21.1
21.1
21.0
0.06
0.012
21.07
0.35
0.33

DG








•
DI








•
DL









DM








•
• =
No data submitted

TAG SYMBOLS

ft = Above control limit

Insufficient data
x =
Determined to be an outlier
II = Below control limit
		—		'J
-------
		"V
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994	21 / 34
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DO






* -

- •
DS









DT
16.2
15.6
17.6
1.03
0.236
16.47
-1.25
-1.26

DZ
23.8
24.1
24.1
0.17
0.035
24.00
1.36
1.35

E








•-
EB
16.8
1.7.2
15.9
0.67
0.154
1.6.63
-1.19
-1.20

EH









EL
22.4
20.5
23.2
1.39
0.319
22.03
0.68
0.67

EO
17.0
18.0
17.2
0.53
0.118
17.40
-0.92
-0.94

EB







"
m
EV








•
EX








•
¦fb:








•
FF








•
fj








•
FL








•
FN
23.4
24.1
24.0
0.38
0.083
23.83
1.30
129

FU








1'
. 9
FZ








f
GE








•
GI
26.0
28.2
29.8
1.91
0.449
28.00
2.75
2.74

GQ
20.0
20.6
21.0
0.50
0.118
20.53
0.16
0.15

GT








•r
GZ








•
HH








•
HI








•
HK
20.7
18.6
17.6
1.58
0.366
18.97
-0.38
-0.39

HL
16.6
16.8
17.5
0.47
0.106
16.97
-1.07
-1.09

HP
19.8
17.8
17.8
1.15
0.236
18.47
-0.55
-0.57

HU








•
ex









I
18.5
A9-3
16.1
1.67
0.378
17.97
-0.73
-0.74

1A









IC









ID
15.5
15.-7
15.9
0.20
0.047
15.70
-1.51
-1.52

IE









IU









J
22.0
21.9
21.0
0.55
0.118
21.63
0.54
0.53

cJE
16.4
19.9
19.2
1.85
0.413
18.50
-0.54
-0.55

JG
24.3
25.2
25.2
0.52
0.106
24.90
1.67
1.66

JH








•
JN









JQ








•
JS
19.5
20.8
22.0
1.25
0.295
20.77
0.24
0.23

JY
14.3
19.5
16.8
2.60
0.614
16.87
-1.11
-1.12

• s No data submitted TAG SYMBOLS IT = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II = Below control limit
-------
(t
22 /34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994

	^
Radium-228







-v
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
19.8
19.2
18.0
0.92
0.213
19.00
-0.37
-0.38

KE








KM








•
KT









KX








•
L
20.8
20.3
20.2
0.32
0.071
20.43
0.13
0.12

LF







+ •
LG








•
LL








•
LM








•
LR
24.0
37.0
18.0
9.71
3.371
26.33
2.17
2.16

LT
17.5
18.3
17.7
0.42
0.095
17.83
-0.77
-0.79

M
22.0
21.0
20.0
1.00
0.236
21.00
0.32
0.31

MA








•
MN








9-
MO








9
MP








9
MQ








• '
MS








9
MV








9,
MY








9'-
N
20.5
21.4
20.8
0.46
0.106
20.90
0.29
0.28

NA








•
NG








9,
NH
20.8
21.6
19.4
111
0.260
20.60
0.18
0.17

NI









NJ
19.0
19.0
20.0
0.58
0.118
19.33
-0.25
-0.27

NK








.. •
NO
20.6
21.6
22.3
0.85
0.201
21.50
0.50
0.48

NT
20.7
21.2
21.6
0.45
0.106
21.17
0.38
0.37

0








•
OF
15.8
18.0
20.2
2.20
0.520
18.00
-0.72
-0.73

OS








1 •'
OX
20.9
20.6
19.7
0.62
0.142
20.40
0.12
0.10

OY
13.5
12.9
14.1
0.60
0.142
13.50
-2.28
-2.29

P
15.1
12.5
16.8
2.17
0.508
14.80
-1.82
-1.84

PA








•
PB
20.5
20.0
19.9
0.32
0.071
20.13
0.02
0.01

PC
27.3
27.9
28.5
0.60
0.142
27.90
2.71
2.70

PG








»
PI








1 ,
PM
15.0
14.0
16.0
1.00
0.236
15.00
-1.76
-1.77

PP
26.1
23.3
21.9
2.14
0.496
23.77
1.28
1.27

PQ








•
PR








•
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
[0.
Insufficient data
x =
Determined to be an outlier
= Below control limit
	SJ
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994	23 / 34
/¦
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
.
Normalized deviation
(grand-avg) (known) Tag
PT
12.2
9.5
10.0
1.44
0.319
10.57
-3.29
-3.30
u
PV
18.7
22.1
21.7
1.86
0.402
20.83
0.27
0.25

PW
17.6
17.0
17.7
0.38
0.083
17.43
-0.91
-0.92

PY








•
Q
22.1
18.4
21.1
1.91
0.437
20.53
0.16
0.15

QC








•
QJ








•
QK








•
QL








•
QP









QQ









QT
20.9
21.3
21.0
0.21
0.047
21.07
0.35
0.33

QU
9.9
11.9
10.7
1.01
0.236
10.83
-3.20
-3.21

QW
15.6
14.2
14.5
0.74
0.165
14.77
-1.84
-1.85

QX
28.1
30.0
28.5
1.00
0.224
28.87
3.05
3.04
It
QY
20.5
24.3
20.0
2.35
0.508
21.60
0.53
0.52

QZ
20.4
21.3
22.1
0.85
0.201
21.27
0.42
0.40

RC
26.8
25.0
24.7
1.14
0.248
25.50
1.88
1.87

RD
23.6
26.3
20.0
3.16
0.744
23.30
1 12
1.11

RE









RF
24.6
22.1
20.1
2.25
0.532
22.27
0.76
0.75

RG








•
RJ








•
RK








•
RL









RM
21.6
20.8
27.2
3.49
0.756
23.20
1.08
1.07

BP








•
RR








• '
RV
LI
-1;4
3.3
1.19
0.260
1.93
-6.28
-6.29
X
RZ
20.4
21.2
20.0
0.61
0.142
20.53
0.16
0.15

S
16.5
18.1
18.5
1.06
0.236
17.70
-0.82
-0.83

sc
20.5
22.1
21.3
0.80
0.189
21.30
0.43
0.42

SD
21.4
24.1
21.1
1.65
0.354
22.20
0.74
0.73

SF
20.1
21.6
20.6
0.76
0.177
20.77
0.24
0.23

SI
20.7
21.4
18.0
1.80
0.402
20.03
-0.01
-0.02

SL








•
SM
15.9
17.5
18.7
1.40
0.331
17.37
-0.94
-0.95

SO








•
SR









SS
21.1
24.1
20.8
1.82
0.390
22.00
0.67
0.66

ST
19.3
19.8
18.8
0.50
0.118
19.30
-0.27
-0.28

SW
19.6
20.7
21.1
0.78
0.177
20.47
0.14
0.13

sx
19.4
26.9
20.4
4.07
0.886
22.23
0.75
0.74

sz
17.7
24.7
27.2
4.92
1.233
23.20
1.08
1.07

T
19.7
20.8
20.6
0.59
0.130
20.37
0.10
0.09

• =
I0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T s Above control limit
s Below control limit
	'J
-------
24/34

EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994


Radium-228








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TA
33.6
27.3
31.9
3.26
0.744
30.93
3.76
3.75
ft
TD
29.7
20.5
35.9
7.75
2.560
28.70
2.99
2.98

TE
24.7
24.8
22.5
1.30
0.272
24.00
1.36
1.35

TG
16.4
16.0
15.1
0.67
0.154
15.83
-1.47
-1.48

TH
13.0
12.6
13.2
0.31
0.071
12.93
-2.47
-2.48

TI
17.1
16.9
16,8
0.15
0.035
16.93
-1.09
-1.10

TL
18.8
16.0
19.8
1.97
0.449
18.20
-0.65
-0.66

TN
19.7
22.9
22.8
1.82
0.378
21.80
0.60
0.59

TQ
25.3
22.9
22.0
1.71
0.390
23.40
1.15
1.14

TS
25.5
22. i
21.9
2.02
0.425
23.17
1.07
1.06

TU








•
TY








- •
U
23.4
19.5
23.1
2.17
0.461
22.00
0.67
0.66

UA








•
UE
23.3
23 3
161
4.16
0.851
20.90
0.29
0.28

UG








•
UK








„•
UN
18.1
17.7
18.1
0.23
0.047
17.97
-0.73
-0.74

UP
15.5
23.0
23.3
4.42
0.921
20.60
0.18
0.17

UQ
21.7
20.7
21.2
0.50
0.118
21.20
0.39
0.38

UW
40.6
39.8
37*1
1.80
0.402
39.13:
6.60
6.59

UY









VA








• !
vc









VG
14.9
16.3
15.3
0.72
0.165
15.50
-1.58
-1.59

VI








•
VJ








•
VM








•J
VN








•
vo








•
VQ








•
VT
22.3
27.3
28.1
3.14
0.685
25.90
2.02
2.01

W
26.7
25.5
24.3
1.20
0.284
25.50
1.88
1.87

WA
20.7
19.0
20.9
1.04
0.224
20.20
0.05
0.03

X
17.2
17.2
19.0
1.04
0.213
17.80
-0.79
-0.80

Z








•
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
1.93
X
RV
14.77
QW
15.50
VG
10.57
li
PT
14.80
P
15.70
ID
10.83
u
QU
15.00
PM
15.83
TG
12.93

TH
15.03
AW
15.87
CA
13.50

OY
15.33
CJ
16.47
DT
14.73

AU
15.40
CS
16.63
EB
• = No data submitted

TAG SYMBOLS

ft
= Above control limit
0 = Insufficient data

x = Determined to be an outlier
4
= Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
25/34
Radium-228
Data sorted by
Average	Tag	Lab Average
Laboratory Average
Tag	Lab
Average
Tag
Lab
16.87
16.93
16.97
17.27
17.37
17.40
17.43
17.70
17.77
17.80
17.83
17.97
17.97
18.00
18.07
18.20
18.20
18.47
18.50
18.57
18.97
19.00
19.30
19.33
19.40
19.43
19.43
19.70
19.70
19.77
19.80
JY
TI
HL
AP
SM
EO
PW
S
AE
X
LT
UN
I
OF
BO
TL
BK
HP
JE
C
HK
K
ST
NJ
AF
AK
AJ
CE
BC
A
BM
20.03
20.13
20.20
20.20
20.37
20.37
20.40
20.43
20.47
20.50
20.53
20.53
20.53
20.57
20.60
20.60
20.77
20.77
20.83
20.90
20.90
21.00
21.03
21.07
21.07
21.17
21.20
21.27
21.30
21.37
21.50
SI
PB
WA
AL
T
CG
OX
L
sw
AZ
RZ
Q
GQ
DB
UP
NH
JS
SF
PV
UE
N
M
BH
QT
DE
NT
UQ
QZ
sc
CK
NO
21.60
21.63
21.73
21.80
22.00
22.00
22.03
22.20
22.23
22.27
22.90
23.17
23.20
23.20
23.30
23.40
23.77
23.83
24.00
24.00
24.90
25.50
25.50
25.90
26.33
27.90
28.00
28.70
28.87
30.93
39.13
ft
ft
x
QY
J
BA
TN
U
SS
EL
SD
sx
RF
AI
TS
RM
SZ
RD
TQ
PP
FN
TE
DZ
JG
W
RC
VT
LR
PC
GI
TD
QX
TA
UW
% responding labs
Frequency distribution
10-
0-wa-r
--li-.fll.lflll.fi.

-4
+2
Normalized deviation of the mean from the known value
• = No data submitted	TAG SYMBOLS	ft = Above control limit
[ 0 = Insufficient data	x = Determined to be an outlier	II = Below control limit
^ —
-------
26/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
Radium-228
% responding labs	 Frequency distribution
10-
lljjillf 	If	¦_!	,	^
-4	-2	6	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
27/34
Uranium (Natural)	Statistical Summary	216 Participants
The known value of this nuclide is 25.0 pCi/1 with an expected precision of 3.0; the control limits
are 19.8 to 30.2; the warning regions are 19.8 to 21.5 and 28.5 to 30.2
92(42.6 %) Failed to respond
2(0.9 %) Outliers
17(7.9 %) Out of control -
but not an outlier
Statistic
. 89(41.2 %) Within all limits
Respondents
- 16(7.4 %) 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
24.16
3.94
15.51
16.30
-3.36
-0.21
24.27
-2.93
-0.19
Grand Avg 24.39
3.53
12.48
14.48
-2.44
-0.17
24.30
-2.80
-0.20
21(16.9 %) More than 3 norm. S.D
15(12.1 %) Between 2 and 3 norm. S.D
.60(48.4 %) Within 1 norm. S.D.
•	of known value
» 28(22.6 %) Between 1 and 2 norm. S.D.
-------
ft	
28/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
-
	
Uranium (Natural)







Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
28.8
30.0
29.8
0.64
0.236
29.53
2.97
2.62

AA
22.8
24.3
24.4
0.90
0.315
23.83
-0.32
-0.67

AE
32.7
30.6
33.5
1.50
0.571
32.27
4.55
4.20
ft
AF
25.7
24.4
22.1
1.82
0.709
24.07
-0.19
-0.54

AI








•
AJ
26.6
23.1
27.6
2.36
0.886
25.77
0.79
0.44

AK
29.3
28.6
30.3
0.85
0.335
29.40
2.89
2.54

AL
22.8
18.6
20.5
2.10
0.827
20.63
-2.17
-2.52

AO








• '
AP
26.0
25.0
26.1
0.61
0.217
25.70
0.76
0.40

AR








•
AU








- • ¦
AW
23.4
23.5
20.1
1.93
0.669
22.33
-1.19
-1.54

AZ
25.2
26.2
27.1
0.95
0.374
26.17
1.03
0.67

BA
25.1
22.2
23.7
1.45
0.571
23.67
-0.42
-0.77

BC
21.5
21.7
21.4
0.15
0.059
21.53
-1.65
-2.00

BG
21.1
21.8
24.5
1.80
0.669
22.47
-1.11
-1.46

BH
27.7
25.0
24.8
1.62
0.571
25.83
0.83
0.48

BK
22.2
22.4
22.8
0.31
0.118
22.47
-1.11
-1.46

BL








m
BM
24.1
22.9
23.0
0.67
0.236
23.33
-0.61
-0.96

BN
21.1
17.1
22.6
2.84
1.158
20.27
-2.38
-2.73

BO
20.9
21.6
21.2
0.35
0.138
21.23
-1.82
-2.17

BS









BW








• .
C
24.1
25.7
26.5
1.22
0.473
25.43
0.60
0.25

CA
25.3
25.7
24.4
0.67
0.256
25.13
0.43
0.08

CE
25.0
25.0
25.2
0.12
0.039
25.07
0.39
0.04

CG
25.3
24.4
24.1
0.62
0.236
24.60
0.12
-0.23

CJ
23.0
22.0
22.0
0.58
0.197
22.33
-1.19
-1.54

CK
24.5
24.3
22.4
1.16
0.413
23.73
-0.38
-0.73

CM
23.9
24.7
23.7
0.53
0.197
24.10
-0.17
-0.52

CO








•
CP








•
CQ








•
CS
28.3
29.6
26.9
1.35
0.532
28.27
2.24
1.89

cx
24.4
24.6
24.5
0.10
0.039
24.50
0.06
-0.29

D
24.6
26.9
24.8
1.27
0.453
25.43
0.60
0.25

DB
23.0
23.0
23.0
0.00
0.000
23.00
-0.80
-LIS

DD








•
DE
20.1
20.2
20.3
0.10
0.039
20.20
-2.42
-2.77

DG








•
DI








•
DL








*
DM








• ¦
• S
No data submitted

TAG SYMBOLS

ft = Above control limit
IU_=
Insufficient data
x =
Determined to be an outlier
il s Below control limit
	jj
-------
r,
V

EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
—"—		^
29/34
Uranium (Natural)







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
26.2
22.8
23.2
1.86
0.669
24.07
-0.19
-0.54

DS







•
DT
26.5
22.8
25.2
1.88
0.728
24.83
0.26
-0.10

DZ
30.6
31.9
32.3
0.89
0.335
31.60
4.16
3.81
tr
E
22.1
22.9
22.8
0.44
0.158
22.60
-1.03
-1.39

EB
24.1
25.1
25.3
0.64
0.236
24.83
0.26
-0.10

EH








•
EL
23.5
22.7
25.2
1.28
0.492
23.80
-0.34
-0.69

EO








•
ER
20.1
21.6
22.1
1.04
0.394
21.27
-1.80
-2.16

EV








•
EX








' •
FE
24.3
23.9
23.9
0.23
0.079
24.03
-0.21
-0.56

FF








•
FJ
9.7
9.8
9.9
o.ia
0.039
9.80
•8.42
-8.78

FL









FN
19.5
20.0
19.1
0.45
0.177
19.53
-2.80
-3.16

FU








•
FZ
26.9
25.6
28.5
1.45
0.571
27.00
1.51
1.15

OE








•
GI









GQ
27.4
29.3
28.3
0.95
0.374
28.33
2.28
1.92

GT








«
GZ








•
HH








•
HI









HK
23.1
24.4
22.0
1.20
0.473
23.17
-0.71
-1.06

HL
30.4
27.4
32.8
2.71
1.120
30.20
3.35
3.00

HP
25.6
26.1
25.1
0.50
0.197
25.60
0.70
0.35

HU
13.2
13.2
13.6
0.23
0.079
13.33
-6.38
-6.74

HX








«
I
31.4
32.4
28.2
2.19
0.827
30.67
3.62
3.27
tr
IA








V
IC








•
ID
30.9
31.1
32.3
0.76
0.276
31.43
4.07
3.71
it
IE
21.6
20.1
20.2
0.84
0.295
20.63
-2.17
-2.52

IU








•
J
23.8
25.4
25.2
0.87
0.315
24.80
0.24
-0.12

JE
23.1
26.0
25.0
1.47
0.571
24.70
0.18
-0.17

JG








•
JH








•
JN








•
JQ








•
JS
18.9
18.9
19.1
0.12
0.039
18.97
-3.13
-3.48

JY
24.7
22.8
23.6
0.95
0.374
23.70
-0.40
-0.75

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
in
-------
f<			
30/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
	^
Uranium (Natural)






Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
27.5
27.3
23.5
2.25
0.788
26.10
0.99
0.64
KE







•
KM








KT
18.0
19.0
210
1.53
0.591
19.33
-2.92
-3.27 U
KX







•
L
28.2
24.0
25.9
2.10
0.827
26.03
0.95
0.60
LF







•
LG







•
LL







•
LM








LR







•
LT
29.8
27.6
26.8
1.55
0.591
28.07
2.12
1.77
M







•
MA.








MN








MO








MP








MQ








MS








MV







V
MY








N
32.5
29.0
30.4
1.76
0.689
30.63
3.60
3.25 IT
NA
28.0
28.0
30.0
115
0.394
28.67
2.47
2.12
NG








NH
24.0
24.2
23.3
0.47
0.177
23.83
-0.32
-0.67
NI








NJ
22.0
23.0
24.0
1.00
0.394
23.00
-0.80
-1.15
NK
23.0
25.1
24.6
1.10
0.413
24.23
-0.09
-0.44
NO
23.2
23.8
25.1
0.97
0.374
24.03
-0.21
-0.56
NT
21.3
22.9
24.5
1.60
0.630
22.90
-0.86
-1.21
O








OF
21.0
23.0
27.0
3.06
1.345
23.67
-0.42
-0.77
OS
18.5
18.1
185
0.23
0.079
18.37
-3.48
-3.83 JJ-
OX







•
OY
20.7
20.4
21.3
0.46
0.177
20.80
-2.07
-2.42
P
22.4
21.6
21.6
0.46
0.158
21.87
-1.46
-1.81
PA







•
PB
25.5
24.7
25.0
0.40
0.158
25.07
0.39
0.04
PC
23.2
24.4
25.3
1.05
0.413
24.30
-0.05
-0.40
PG







•
PI







• .
PM
21.0
22.0
22.0
0.58
0.197
21.67
-1.57
-1.92
PP
23.1
23.1
23.0
0.06
0.020
23.07
-0.76
-1.12
PQ
24.3
24.6
24.1
0.25
0.098
24.33
-0.03
-0.38
PR







' •
• =
No data submitted

TAG SYMBOLS

= Above control limit
0 =
^	
Insufficient data
x =
Determined to be an outlier
= Below control limit
	jj
-------
({ *
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994	31 / 34
Uranium (Natural)
Lab Res. 1 Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
s
Normalized deviation
(grand-avg) (known) Tag
PT
10.2
11.6
9.8
0.95
0.354
10.53
-8.00
-8;35
X
PV
15.9
16.8
14.7
1.05
0.413
15.80
-4.96
-5.31

PW
27.4
34.6
24.2
5.33
2.996
28.73
2.51
2.16

FY








•
Q
22.9
20.5
18.5
2.20
0.866
20.63
-2.17
-2.52

QC








•
QJ
23.0
23.6
23.5
0.32
0118
23.37
-0.59
-0.94

QK








•
QL








•
QP








«
QQ
25.7
25.2
25.4
0.25
0.098
25.43
0.60
0.25

QT








•
QU
21.2
18.0
20.2
1.64
0.630
19.80
-2.65
-3.00

QW








•
QX
17.2
17.0
15.1
1.16
0.413
16.43
-4.59
-4.95

QY
25.8
26.1
26.4
0.30
0.118
26.10
0.99
0.64

QZ
20.3
22.1
20.0
1.14
0.413
20.80
-2.07
-2.42

RC
25.9
24.9
24.7
0.64
0.236
25.17
0.45
0.10

RD
24.8
24.5
25.0
0.25
0.098
24.77
0.22
-0.13

RE








•
RF








«
RG
26.5
25.9
25.6
0.46
0.177
26.00
0.93
0.58

RJ








•
RK








•
RL








•
RM
26.9
21.5
26.7
3.06
1.120
25.03
0.37
0.02

RP
24.4
25.5
26.8
1.20
0.473
25.57
0.68
0.33

RR
25.3
26.4
26.1
0.57
0.217
25.93
0.89
0.54

RV
23.2
23.6
24.7
0.78
0.295
23.83
-0.32
-0.67

RZ
22.8
23.9
21.9
1.00
0.394
22.87
-0.88
-1.23

S
22.8
23.2
23.5
0.35
0.138
23.17
-0.71
-1.06

sc
26.3
26.4
26.2
0.10
0.039
26.30
1.10
0.75

SD
27.1
24.5
27.2
1.53
0.532
26.27
1.08
0.73

SF
24.3
24.1
24.0
0.15
0.059
24.13
-0.15
-0.50

SI
26.6
24.4
25.7
1.11
0.433
25.57
0.68
0.33

SL
33.0
30.0
34.0
2.08
0.788
32.33
4.59
4.23
ft
SM
26.0
26.2
27.6
0.87
0.315
26.60
1.28
0.92

SO
21.8
23.7
21.7
1.13
0.394
22.40
-1.15
-1.50

SR








•
ss
22.8
23.0
21.5
0.81
0.295
22.43
-1.13
-1.48

ST
24.0
23.9
25.0
0.61
0.217
24.30
-0.05
-0.40

SW
25.4
24.9
25.5
0.32
0.118
25.27
0.51
0.15

sx
26.0
25.1
28.1
1.54
0.591
26.40
1.16
0.81

sz
20.9
21.6
22.3
0.70
0.276
21.60
-1.61
-1.96

T
27.3
28.9
26.4
1.27
0.492
27.53
1.81
1.46

• =
0 a
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
= Below control limit
	SJ
-------
32/34
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
TA
34.3
36.2
31.2
2.52
0.984
33.90
5.49
5.14
TD
19.0
21.2
12.4
4.58
2.395
17.53
-3.96
-4.31
TE
26.8
24.9
25.8
0.95
0.374
25.83
0.83
0.48
TG








TH
13.8
12.5
14.3
0.93
0.354
13.53
-6.27
-6.62
n
24.0
24.1
23.8
0.15
0.059
23.97
-0.24
-0.60
TL
30.5
28.1
28.6
1.27
0.473
29.07
2.70
2.35
TN








TQ
28.7
23.9
28.8
2.80
0.965
27.13
1.58
1.23
TS
23.2
24.1
23.1
0.55
0.197
23.47
-0.53
-0.89
TU
27.6
27.8
28.1
0.25
0.098
27.83
1.99
1.64
TY








U
23.6
26.3
30.1
3.27
1.533
26.67
1.31
0.96
UA








UE
24.3
24.2
25.2
0.55
0.197
24.57
0.10
-0.25
UG








UK








UN
23.6
36.8
32.8
6.77
4.046
31.07
3.85
3.50
UP
24.6
20.9
22.0
1.90
0.728
22.50
-1.09
-1.44
UQ








uw
20.4
25.6
19.1
3.44
1.533
21.70
-1.55
-1.91
UY








VA








VC








VG
27.1
27.6
26.3
0.66
0.256
27.00
1.51
1.15
VI








VJ








VM








VN








vo
26.3
25.7
25.9
0.31
0.118
25.97
0.91
0.56
VQ








VT








W
24.8
26.9
26.0
1.05
0.413
25.90
0.87
0.52
WA








X
19.7
23.0
23.3
2.00
0.709
22.00
I
CO
~0
-1.73
Z
23.6
24.1
24.3
0.36
0.138
24.00
-0.23
-0.58
ft
U
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.80
X
FJ
17.53
11
TD
20.20

DE
10.53
X
PT
18.37
II
OS
20.27

BN
13.33
II
HU
18.97
II
JS
20.63

Q
13.53
II
TH
19.33
II
KT
20.63

IE
15.80
II
PV
19.53
II
FN
20.63

AL
16.43
II
QX
19.80

QU
20.80

QZ
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
II = Below control limit
-------
ft
EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
33/34
Uranium (Natural)
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
20.80

OY
23.97

TI
25.83

BH
21.23

BO
24.00

Z
25.90

W
21.27

ER
24.03

NO
25.93

RR
21.53

BC
24.03

FE
25.97

VO
21.60

SZ
24.07

DO
26.00

RG
21.67

PM
24.07

AF
26.03

L
21.70

UW
24.10

CM
26.10

QY
21.87

P
24.13

SF
26.10

K
22.00

X
24.23

NK
26.17

AZ
22.33

CJ
24.30

ST
26.27

SD
22.33

AW
24.30

PC
26.30

SC
22.40

SO
24.33

PQ
26.40

SX
22.43

ss
24.50

CX
26.60

SM
22.47

BK
24.57

UE
26.67

u
22.47

BG
24.60

CG
27.00

VG
22.50

UP
24.70

JE
27.00

FZ
22.60

E
24.77

RD
27.13

TQ
22.87

RZ
24.80

J
27.53

T
22.90

NT
24.83

EB
27.83

TU
23.00

NJ
24.83

DT
28.07

LT
23.00

DB
25.03

RM
28.27

CS
23.07

PP
25.07

PB
28.33

GQ
23.17

S
25.07

CE
28.67

NA
23.17

HK
25.13

CA
28.73

PW
23.33

BM
25.17

RC
29.07

TL
23.37

QJ
25.27

SW
29.40

AK
23.47

TS
25.43

QQ
29.53

A
23.67

OF
25.43

D
30.20

HL
23.67

BA
25.43

C
30.63
ft
N
23.70

JY
25.57

RP
30.67
ft
I
23.73

CK
25.57

SI
31.07
ft
UN
23.80

EL
25.60

HP
31.43
ft
ID
23.83

RV
25.70

AP
31.60
ft
DZ
23.83

NH
25.77

AJ
32.27
ft
AE
23.83

AA
25.83

TE
32.33
33.90
ft
ft
SL
TA
responding labs
Frequency distribution
10-

|
J* [ m
—T—
+6
-6
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	U = Below control limit
-------
34 / 34	EMSL-LV Performance Evaluation: Blind-A, 19-Apr-1994
Uranium (Natural)
% responding labs	Frequency distribution	

' I	T " ¦	— 1 — |
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
United Slates	Office of Research and	EPA;600/R-94/i21 B
Environmental Protection	Development	July 1994
Agency	Washington, DC 20460
Blind-B Performance
Evaluation Study
A Statistical Evaluation of
the April 19,1994 Data
Library Use Only
-------
Blind-B
Performance Evaluation Study
April 19, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
V
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 Bllnd-B; April 19, 1994.
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.
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.
-------
EMSLrLV Performance Evaluation: Blind-B, 19-Apr-1994
1/50
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.
-------
f,
2/50
EMSLrLV Performance Evaluation: Blind-B, 19-Apr-1994
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: Blind-B, 19-Apr-1994
3/50
Gross Beta
Statistical Summary
216 Participants
The known value of this nuclide is 117.0 pCi/1 with an expected precision of 18.0; the control limits
are 85.8 to 148.2; the warning regions are 85.8 to 96.2 and 137.8 to 148.2
43(19.9 %) Failed to respond •»
5(2.3 %) Outliers '
18(8.3 %) Out of control:
but not an outlier
Statistic
; 129(59.7 %) Within all limits
Respondents
21(9.7 %) 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
441.79
4387.42
19249479.28
993.11
277.60
0.07
108.33
-7.41
0.00
Grand Avg 106.86
15.47
239.40
14.48
-8.67
-0.66
108.00
-7.69
-0.58
-------
4/50	EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
/
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
119.0
113.0
117.0
3.06
0.197
116.33
0.91
-0.06
AA
82.0
80.0
82.0
1.15
0.066
81.33
-2.46
-3.43 U
AE
274.0
288.0
276.0
7.57
0.459
279.33
16.60
15.62 x
AF
112.0
108.0
110.0
2.00
0.131
110.00
0.30
-0.67
AI







- •
AJ
101.0
102.0
95.0
3.79
0.230
99.33
-0.72
-1.70
AK
88.0
86.0
92.0
3.06
0.197
88.67
-1.75
-2.73
AL
110.0
120.0
110.0
5.77
0.328
113.33
0.62
-0.35
AO
95.0
98.0
103.0
4.04
0.263
98.67
-0.79
-1.76
AP
109.0
113.0
106.0
3.51
0.230
109.33
0.24
-0.74
AR
96.0
98.0
95.0
1.53
0.098
96.33
-1.01
-1.99
AU
129.0
129.0
129.0
0.00
0.000
129.00
2.13
1.15
AW
107.0
109.0
105.0
2.00
0.131
107.00
0.01
-0.96
AZ







• -
BA
115.0
118.0
118.0
1.73
0.098
117.00
0.98
0.00
BC
119.0
118.0
119.0
0.58
0.033
118.67
1.14
0.16
BG
98.0
98.0
97.0
0.58
0.033
97.67
-0.88
-1.86
BH
96.0
95.0
95.0
0.58
0.033
95.33
-1.11
-2.08
BK
112.0
113.0
112.0
0.58
0.033
112.33
0.53
-0.45
BL








BM
113.0
109.0
111.0
2.00
0.131
111.00
0.40
-0.58
BN
107.0
106.0
108.0
1.00
0.066
107.00
0.01
-0.96
BO
95.0
95.0
90.0
2.89
0.164
93.33
-1.30
-2.28
BS
111.0
114.0
115.0
2.08
0.131
113.33
0.62
-0.35
BW
43.0
37.0
93.0
30.75
2.595
57.67
-4.73
-5.71 li
C
107.0
112.0
113.0
3.21
0.197
110.67
0.37
-0.61
CA
100.0
91.0
112.0
10.54
0.689
101.00
-0.56
-1.54
CE
110.0
114.0
117.0
3.51
0.230
113.67
0.66
-0.32
CG
112.0
109.0
107.0
2.52
0.164
109.33
0^24
-0.74
CJ
100.0
98.0
110.0
6.43
0.394
102.67
-0.40
-1.38
CK
112.0
112.0
119.0
4.04
0.230
114.33
0.72
-0.26
CM







_ •
CO
95.0
99.0
91.0
4.00
0.263
95.00
-1.14
-2.12
CP







•-
CQ
137.0
141.0
139.0
2.00
0.131
139.00
3.09
2.12
CS
98.0
96.0
94.0
2.00
0.131
96.00
-1.04
-2.02
cx
73.0
98.0
72.0
14.73
0.853
81.00
-2.49
-3.46 U-
D
110.0
109.0
110.0
0.58
0.033
109.67
0.27
-0.71
DB
107.0
108.0
109.0
1.00
0.066
108.00
0.11
-0.87
DD
108.0
109.0
108.0
0.58
0.033
108.33
0.14
-0.83
DE
114.0
116.0
117.0
1.53
0.098
115.67
0.85
-0.13
DG
91.0
78.0
81.0
6.81
0.427
83.33
-2.26
-3.24 U
DI







•
DL
109.0
109.0
109.0
0.00
0.000
109.00
0.21
-0.77
DM
101.0
103.0
106.0
2.52
0.164
103.33
-0.34
-1.32
• =
0 =
v	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
s Below control limit
	y
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994	5/50
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DO







•
DS
105.0
104.0
106.0
1.00
0.066
105.00
-0.18
-1.15
DT
113.0
112.0
109.0
2.08
0.131
111.33
0.43
-0.55
DZ
102.0
110.0
111.0
4.93
0.295
107.67
0.08
-0.90
E
108.0
113.0
111.0
2.52
0.164
110.67
0.37
-0.61
EB
105.0
112.0
114.0
4.73
0.295
110.33
0.33
-0.64
EH
102.0
103.0
105.0
1.53
0.098
103.33
-0.34
-1.32
EL







•
EO
115.0
116.0
117.0
1.00
0.066
116.00
0.88
-0.10
ER







•
EV
104.0
103.0
105.0
1.00
0.066
104.00
-0.27
-1.25
EX







•
FE
114.0
113.0
115.0
1.00
0.066
114.00
0.69
-0.29
FF
197.0
197.0
184.0
7.51
0.427
192.67
8;26
7.28 x
FJ
139.0
137.0
150.0
7.00
0.427
142.00
3.38
2.41
FL
93.0
98.0
98.0
2.89
0.164
96.33
-1.01
-1.99
FN
103.0
104.0
98.0
3.21
0.197
101.67
-0.50
-1.48
FU
87.0
92.0
91.0
2.65
0.164
90.00
-1.62
-2.60
FZ
75.0
75.0
93.0
10.39
0.591
81.00
-2.49
-3.46 H
GE
109.0
109.0
109.0
0.00
0.000
109.00
0.21
-0.77
GI







•
GQ
117.0
124.0
131.0
7.00
0.459
124.00
1.65
0.67
GT
97.0
102.0
104.0
3.61
0.230
101.00
-0.56
-1.54
GZ
138.0
137.0
135.0
1.53
0.098
136.67
2.87
1.89
HH







•
HI
110.0
110.0
110.0
0.00
0.000
110.00
0.30
-0.67
HK
106.0
105.0
107.0
1.00
0.066
106.00
-0.08
-1.06
HL
116.0
116.0
116.0
0.00
0.000
116.00
0.88
-0.10
HP
89.0
94.0
97.0
4.04
0.263
93.33
-1.30
-2.28
HU
146.0
136.0
140.0
5.03
0.328
140.67
3.25
2.28
HX







• :
I
103.0
105.0
103.0
1.15
0.066
103.67
-0.31
-1.28
IA







•-
IC
104.0
106.0
105.0
1.00
0.066
105.00
-0.18
-1.15
ID







•
IE
104.0
102.0
106.0
2.00
0.131
104.00
-0.27
-1.25
IU







•
J
119.0
119.0
120.0
0.58
0.033
119.33
1.20
0.22
tJE
131.0
133.0
134.0
1.53
0.098
132.67
2.48
1.51
JG
117.0
131.0
133.0
8.72
0.525
127.00
1.94
0.96
JH







•
JN
99.0
102.0
104.0
2.52
0.164
101.67
-0.50
-1.48
JQ
154.0
140.0
152.0
7.57
0.459
148.67
4.02
3.05 It
JS
95.0
96.0
97.0
1.00
0.066
96.00
-1.04
-2.02
JY
96.0
98.0
97.0
1.00
0.066
97.00
-0.95
-1.92
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft 3 Above control limit
= Below control limit
-------
?		—
6/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994

	
Gross Beta








Lab
Res. 1
Res. 2

Exper.
Rng anal

.Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
79.0
82.0
81.0
1.53
0.098
80.67
-2.52
-3.50
4
KE
103.0
95.0
102.0
4.36
0.263
100.00
-0.66
-1.64

KM








• '
KT
20.0
24.0
29.0
4.51
0.295
24.33
-7.94
-8.92
X
KX
116.0
119.0
119.0
1.73
0.098
118.00
1.07
0.10

L
116.0
115.0
113.0
1.53
0.098
114.67
0.75
-0.22

LF
99.0
110.0
100.0
6.08
0.361
103.00
-0.37
-1.35

LG
111.0
113.0
111.0
1.15
0.066
111.67
0.46
-0.51

LL
81.0
89.0
84.0
4.04
0.263
84.67
-2.14
-3.11

LM








•
LR
113.0
102.0
114.0
6.66
0.394
109.67
0.27
-0.71

LT
100.0
100.0
104.0
2.31
0.131
101.33
-0.53
-1.51

M
144.0
140.0
140.0
2.31
0.131
141.33
3.32
2.34

MA
121.0
116.0
124.0
4.04
0.263
120.33
1.30
0.32

MN








•
MO








V
MP









MQ
116.0
112.0
107.0
4.51
0.295
111.67
0.46
-0.51

MS








' •
MV
117.0
117.0
109.0
4.62
0.263
114.33
0.72
-0.26

MY








•
N
100.0
102.0
107.0
3.61
0.230
103.00
-0.37
-1.35

NA
118.0
120.0
119.0
1.00
0.066
119.00
117
0.19

NG








•
NH
122.0
124.0
114.0
5.29
0.328
120.00
1.26
0.29

NI









NJ
116.0
133.0
125.0
8.50
0.558
124.67
1.71
0.74

NK
97.0
102.0
105.0
4.04
0.263
101.33
-0.53
-1.51

NO
75.0
77.0
79.0
2.00
0.131
77.00
-2.87
-3.85

NT
112.0
113.0
112.0
0.58
0.033
112.33
0.53
-0.45

O
107.0
103.0
111.0
4.00
0.263
107.00
0.01
-0.96

OF
116.0
119.0
120.0
2.08
0.131
118.33
1.10
0.13

OS
133.0
129.0
129.0
2.31
0.131
130.33
2.26
1.28

OX
104.0
111.0
114.0
5.13
0.328
109.67
0.27
-0.71

OY
92.0
94.0
94.0
1.15
0.066
93.33
-1.30
-2.28

P
123.0
108.0
119.0
7.77
0.492
116.67
0.94
-0.03

PA
84.0
103.0
98.0
9.85
0.623
95.00
-1.14
-2.12

PB
119.0
122.0
120.0
1.53
0.098
120.33
1.30
0.32

PC
65.0
68.0
71.0
3.00
0.197
68.00
-3.74
-4.72
u
PG
81.0
86.0
80.0
3.21
0.197
82.33
-2.36
-3.34

PI








•
PM
118.0
114.0
112.0
3.06
0.197
114.67
0.75
-0.22

PP








•
PQ
92.0
94.0
95.0
1.53
0.098
93.67
-1.27
-2.25

PR
88.0
89.0
89.0
0.58
0.033
88.67
-1.75
-2.73

• =
No data submitted

TAG SYMBOLS

ft = Above control limit

Insufficient data
x =
Determined to be an outlier
ii = Below control limit
		—'J
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
/ ~
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PT
63.0
61.0
57.0
3.06
0.197
60.33
-4.48
-5.45
li
PV
104.0
111.0
103.0
4.36
0.263
106.00
-0.08
-1.06

PW







ft
PY








«
Q
97.0
102.0
106.0
4.51
0.295
101.67
-0.50
-1.48

QC








QJ
104.0
119.0
114.0
7.64
0.492
112.33
0.53
-0.45

QK
122.0
124.0
126.0
2.00
0.131
124.00
1.65
0.67

QL
151.0
152.0
149.0
1.53
0.098
150.67
4.22
3.24
ir
QP
115.0
113.0
112.0
1.53
0.098
113.33
0.62
-0.35

QQ
104.0
106.0 .
108.0
2.00
0.131
106.00
-0.08
-1.06

QT
103.0
94.0
98.0
4.51
0.295
98.33
-0.82
-1.80

QU
84.0
83.0
77.0
3.79
0.230
81.33
-2.46
-3.43
u.
QW
81.0
75.0
80.0
3.21
0.197
78.67
-2.71
-3.69
n
QX
108.0
108.0
108.0
0.00
0.000
108.00
0.11
-0.87

QY








i
QZ
109.0
108.0
105.0
2.08
0.131
107.33
0.05
-0.93

RC
109.0
110.0
109.0
0.58
0.033
109.33
0.24
-0.74

RD
96.0
96.0
104.0
4.62
0.263
98.67
-0.79
-1.76

RE
102.0
90.0
91.0
6.66
0.394
94.33
-1.20
-2.18

RF
114.0
121.0
113.0
4.36
0.263
116.00
0.88
-0.10

RG
110.0
110.0
111.0
0.58
0.033
110.33
0.33
-0.64

RJ
114.0
117.0
117.0
1.73
0.098
116.00
0.88
-0.10

RK








•
RL








•
RM
115.0
120.0
116.0
2.65
0.164
117.00
0.98
0.00

RP








•
RR
105.0
105.0
103.0
1.15
0.066
104.33
-0.24
-1.22

RV
140.0
118.0
136.0
11.72
0.722
131.33
2.36
1.38

RZ
113.0
107.0
107.0
3.46
0.197
109.00
0.21
-0.77

S
127.0
127.0
125.0
1.15
0.066
126.33
1.87
0.90

sc
117.0
118.0
119.0
1.00
0.066
118.00
1.07
0.10

SD
100.0
104.0
104.0
2.31
0.131
102.67
-0.40
-1.38

SF
125.0
96.0
106.0
14.73
0.952
109.00
0.21
-0.77

SI
102.0
94.0
95.0
4.36
0.263
97.00
-0.95
-1.92

SL
98.0
101.0
100.0
1.53
0.098
99.67
-0.69
-1.67

SM
102.0
103.0
105.0
1.53
0.098
103.33
-0.34
-1.32

SO
99.0
98.0
99.0
0.58
0.033
98.67
-0.79
-1.76

SR
63.0
67.0
66.0
2.08
0.131
65.33
-4.00
-4.97

ss
97.0
101.0
96.0
2.65
0.164
98.00
-0.85
-1.83

ST
109.0
92.0
96.0
8.89
0.558
99.00
-0.76
-1.73

sw
110.0
112.0
128.0
9.87
0.591
116.67
0.94
-0.03

sx
119.0
104.0
119.0
8.66
0.492
114.00
0.69
-0.29

sz
102.0
122.0
121.0
11.27
0.656
115.00
0.78
-0.19

T
105.0
101.0
104.0
2.08
0.131
103.33
-0.34
-1.32

• =
0 =
v-	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
•U = Below control limit
	
-------
8/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TA
68.0
66.0
67.0
1.00
0.066
67.00
-3.84
-4.81
U
TD
128.0
98.0
133.0
18.93
1.283
119.67
1.23
0.26

TE
118.0
120.0
120.0
1.15
0.066
119.33
1.20
0.22

TG
97.0
100.0
98.0
1.53
0.098
98.33
-0.82
-1.80

TH
110.0
103.0
106.0
3.51
0.230
106.33
-0.05
-1.03

TI
100.0
94.0
97.0
3.00
0.197
97.00
-0.95
-1.92

TL
119.0
119.0
118.0
0.58
0.033
118.67
1.14
0.16

TN
116.0
112.0
118.0
3.06
0.197
115.33
0.82
-0.16

TQ
106.0
111.0
121.0
7.64
0.492
112.67
0.56
-0.42

TS
170.0
159.0
170.0
6.35
0.361
166.33
5.72
4.75
X
TU








•
TY
95.0
95.0
98.0
1.73
0.098
96.00
-1.04
-2.02

U
106.0
102.0
100.0
3.06
0.197
102.67
-0.40
-1.38

UA
105.0
109.0
107.0
2.00
0.131
107.00
0.01
-0.96

UE
120.0
124.0
118.0
3.06
0.197
120.67
1.33
0.35

UG
141.0
142.0
140.0
1.00
0.066
141.00
3.29
2.31

UK









UN
137.0
121.0
110.0
13.58
0.886
122.67
1.52
0.55

UP
111.0
121.0
112.0
5.51
0.328
114.67
0.75
-0.22

UQ
105.0
104.0
104.0
0.58
0.033
104.33
-0.24
-1.22

UW
88.0
96.0
97.0
4.93
0.295
93.67
-1.27
-2.25

UY
82.0
87.0
74.0
6.56
0.427
81.00
-2.49
-3.46
U
VA








>•'
VC








•
VG
92.0
96.0
98.0
3.06
0.197
95.33
-1.11
-2.08

VI








•
VJ
99.0
112.0
93.0
9.71
0.623
101.33
-0.53
-1.51

VM
57740.0
57815.0
57890.0
76.30
8.471
57815.00
5562.97
6551.99
X
VN








•
vo
120.0
110.0
112.0
5.29
0.328
114.00
0.69
-0.29

VQ








' •
VT
112.0
108.0
115.0
3.51
0.230
111.67
0.46
-0.51

W
99.0
107.0
104.0
4.04
0.263
103.33
-0.34
-1.32

WA








V
X
108.0
123.0
109.0
8.39
0.492
113.33
0.62
-0.35

Z
104.0
117.0
109.0
6.56
0.427
110.00
0.30
-0.67

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
24.33
X
KT
77.00
ii
NO
81.33
u
QU
57.67
u
BW
78.67
Ji
QW
81.33
u
AA
60.33
u
PT
80.67
U
K
82.33
u
PG
65.33
11
SR
81.00
1*
UY
83.33

DG
67.00
u
TA
81.00
u
FZ
84.67
li
LL
68.00
It
PC
81.00
11
CX
88.67 ,

PR
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1T = Above control limit
11 = Below control limit
-------
ft	







	^

EMSL-LV Performance Evaluation: Blind-B,
19-Apr-1994

9/50
'
Gross Beta







¦\


Data sorted by Laboratory Average


Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
88.67

AK
103.33

W
111.67

VT
90.00

FU
103.33

T
111.67

MQ
93.33

OY
103.33

SM
111.67

LG
93.33

HP
103.33

EH
112.33

Q«J
93.33

BO
103.33

DM
112.33

NT
93.67

UW
103.67

I
112.33

BK
93.67

PQ
104.00

IE
112.67

TQ
94.33

RE
104.00

EV
113.33

X
95.00

PA
104.33

UQ
113.33

QP
95.00

CO
104.33

RR
113.33

BS
95.33

VG
105.00

IC
113.33

AL
95.33

BH
105.00

DS
113.67

CE
96.00

TY
106.00

QQ
114.00

VO
96.00

JS
106.00

PV
114.00

SX
96.00

CS
106.00

HK
114.00

FE
96.33

FL
106.33

TH
114.33

MV
96.33

AR
107.00

UA
114.33

CK
97.00

TI
107.00

O
114.67

UP
97.00

SI
107.00

BN
114.67

PM
97.00

JY
107.00

AW
114.67

L
97.67

BG
107.33

QZ
115.00

sz
98.00

SS
107.67

DZ
115.33

TN
98.33

TG
108.00

QX
115.67

DE
98.33

QT
108.00

DB
116.00

RJ
98.67

SO
108.33

DD
116.00

RF
98.67

RD
109.00

SF
116.00

HL
98.67

AO
109.00

RZ
116.00

EO
99.00

ST
109.00

GE
116.33

A
99.33

AJ
109.00

DL
116.67

SW
99.67

SL
109.33

RC
116.67

P
100.00

KE
109.33

CG
117.00

RM
101.00

GT
109.33

AP
117.00

BA
101.00

CA
109.67

OX
118.00

SC
101.33

VJ
109.67

LR
118.00

KX
101.33

NK
109.67

D
118.33

OF
101.33

LT
110.00

Z
118.67

TL
101.67

Q
110.00

HI
118.67

BC
101.67

JN
110.00

AF
119.00

NA
101.67

FN
110.33

RG
119.33

TE
102.67

U
110.33

EB
119.33

J
102.67

SD
110.67

E
119.67

TD
102.67

CJ
110.67

C
120.00

NH
103.00

N
111.00

BM
120.33

PB
103.00

LF
111.33

DT
120.33

MA
• = No data submitted

TAG SYMBOLS

IT s
Above control limit
0 = Insufficient data
	

x = Determined to be an outlier

Below control limit
'J
-------
10/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Gross Beta
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
120.67
UE
129.00
AU
141.33

M
122.67
UN
130.33
OS
142.00

FJ
124.00
QK
131.33
RV
148.67
IT
JQ
124.00
GQ
132.67
J£
150.67
IT
QL
124.67
NJ
136.67
GZ
166.33
X
TS
126.33
S
139.00
CQ
192.67
X
FF
127.00
JG
140.67
HU
279.33
X
AE


141.00
UG
57815.00
X
VM
% responding labs

Frequency distribution



¦iIm i

"-J-	| ¦'
Jg
-6
lOf
responding labs
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
Frequency distribution

iflilifllllj
I

-6
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
• = No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	x s Determined to be an outlier	g Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994	11 / 50
f	\
Strontium-89	Statistical Summary	216 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
Statistic	Respondents	Non-outliers
Mean
18.68
Grand Avg 18.49
Std. Dev.
4.08
3.69
Variance
16.67
13.58
% Coef. of Var.
21.86
19.93
% deviation of mean from known value
-6.61
-7.54
Norm. dev. of mean from known value
-0.32
-0.41
Median
19.00
19.00
% deviation of median from known value
-5.00
-5.00
Norm. dev. of median from known value
-0.24
-0.27
-------
6	=—
12/50
V-
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994

	
/
Strontium-89








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
20.0
21.0
20.0
0.58
0.118
20.33
0.64
0.12

AA








•
AE
22.0
25.0
23.0
1.53
0.354
23.33
1.68
1.15

AF
23.0
23.0
23.0
0.00
0.000
23.00
1.56
1.04

AI








•
AJ
22.0
25.0
27.0
2.52
0.591
24.67
2.14
1.62

AK
15.0
15.0
15.0
0.00
0.000
15.00
-1.21
-1.73

AL
17.0
22.0
18.0
2.65
0.591
19.00
0.18
-0.35

AO








•
AP








•
AR








•
AU
20.0
23.0
26.0
3.00
0.709
23.00
1.56
1.04

AW
16.0
17.0
16.0
0.58
0.118
16.33
-0.75
-1.27

AZ
20.0
18.0
19.0
1.00
0.236
19.00
0.18
-0.35

BA
20.0
17.0
20.0
1.73
0.354
19.00
0.18
-0.35

BC
18.0
19.0
18.0
0.58
0.118
18.33
-0.06
-0.58

BO









BH
16.0
17.0
16.0
0.58
0.118
16.33
-0.75
-1.27

BK









BL
21.0
21.0
16.0
2.89
0.591
19.33
0.29
-0.23

BM
22.0
26.0
24.0
2.00
0.473
24.00
1.91
1.39

BN








• '
BO
25.0
23.0
23.0
1.15
0.236
23.67
1.79
1.27

BS








•
BW








•
C
18.0
19.0
21.0
1.53
0.354
19.33
0.29
-0.23

CA
14.0
14.0
17.0
1.73
0.354
15.00
-1.21
-1.73

CE








•
CG
16.0
16.0
14.0
1.15
0.236
15.33
-1.09
-1.62

CJ
19.0
18.0
20.0
1.00
0.236
19.00
0.18
-0.35

CK
23.0
18.0
19.0
2.65
0.591
20.00
0.52
0.00

CM








• '
CO
17.0
7.0
12.0
5.00
1.345
12.00
-2.25
-2.77

CP
9.0
8.0
5.0
2.08
0.473
7.33
-3.87
-4,39
u
CQ
11.0
11.0
11.0
0.00
0.000
11.00
-2.60
-3.12
u
CS
26.0
25.0
21.0
2.65
0.591
24.00
1.91
1.39

cx
19.0
12.0
15.0
3.51
0.827
15.33
-1.09
-1.62

D
25.0
24.0
26.0
1.00
0.236
25.00
2.25
1.73

DB








~
DD
16.0
16.0
17.0
0.58
0.118
16.33
-0.75
-1.27

DE
17.0
17.0
18.0
0.58
0.118
17.33
-0.40
-0.92

DG
19.0
19.0
15.0
2.31
0.473
17.67
-0.29
-0.81

DI









DL








•
DM








~
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
•H = Below control limit
	V
-------
f	

EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
	
13 / 50
Strontium-89







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
22.0
19.0
25.0
3.00
0.709
22.00
1.21
0.69
DS







*.
DT
15.0
13.0
15.0
1.15
0.236
14.33
-1.44
-1.96
DZ
20.0
20.0
19.0
0.58
0.118
19.67
0.41
-0.12
E
22.0
19.0
21.0
1.53
0.354
20.67
0.75
0.23
EB
20.0
21.0
21.0
0.58
0.118
20.67
0.75
0.23
EH
21.0
19.0
18.0
1.53
0.354
19.33
0.29
-0.23
EL
21.0
18.0
19.0
1.53
0.354
19.33
0.29
-0.23
•
EO







ER







•
EV







•
EX







•
FE
21.0
19.0
20.0
1.00
0.236
20.00
0.52
0.00
FF







•
FJ







•
FL








FN"







#y
FU
23.0
25.0
25.0
1.15
0.236
24.33
2.02
1.50
FZ







v
GE







•
GI







•
GQ
12.0
12.0
12.0
0.00
0.000
12.00
-2.25
-2.77
GT








GZ








HH







•
m







•
HK
18.0
18.0
18.0
0.00
0.000
18.00
-0.17
-0.69
HL







•
HP
14.0
14.0
19.0
2.89
0.591
15.67
-0.98
-1.50
HU
21.0
23.0
21.0
1.15
0.236
21.67
1.10
0.58
HX








I
19.0
21.0
21.0
1.15
0.236
20.33
0.64
0.12
IA







•
IC
17.0
18.0
17 0
0.58
0.118
17.33
-0.40
-0.92
ID







•
IE







•
IU







•
J
17.0
17.0
17.0
0.00
0.000
17.00
-0.52
-1.04
JE
21.0
21.0
20.0
0.58
0.118
20.67
0.75
0.23
JG






*
•
JH







•
JN







•
JQ







•
JS
21.0
18.0
17.0
2.08
0.473
18.67
0.06
-0.46
JY
27.0
17.0
16.0
6.08
1.570
20.00
0.52
0.00
• =
No data submitted

TAG SYMBOLS

1T = Above control limit
in
5)
Insufficient data
x =
Determined to be an outlier
ii s Below control limit
	'J
-------
14/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994

Strontium-89






,
Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
9.0
10.0
10.0
0.58
0.118
9.67
-3.06
-3.58 U
KE







•
KM








KT







•
KX
20.0
18.0
19.0
1.00
0.236
19.00
0.18
-0.35
L
22.0
22.0
22.0
0.00
0.000
22.00
1.21
0.69
LF







•
LG







•
LL








LM







••
LR








LT
20.0
21.0
18.0
1.53
0.354
19.67
0.41
-0.12
M
18.0
19.0
18.0
0.58
0.118
18.33
-0.06
-0.58
MA







•
MN







•
MO







•
MP







•
MQ
17.0
18.0
190
1.00
0.236
18.00
-0.17
-0.69
MS







•
MV







« >
MY







•
N
20.0
19.0
19.0
0.58
0.118
19.33
0.29
-0.23
NA








NO







•
NH








NI








NJ
15.0
19.0
18.0
2.08
0.473
17.33
-0.40
-0.92
NK








NO
18.0
18.0
19.0
0.58
0.118
18.33
-0.06
-0.58
NT
20.0
19.0
20.0
0.58
0.118
19.67
0.41
-a12
O








OF







•
OS








OX







•
OY







•
P







o
PA







0
PB
20.0
20.0
20.0
0.00
0.000
20.00
0.52
0.00
PC
8.0
9.0
9.0
0.58
0.118
8.67
-3.40
-3.93 U
PG







• •
PI







•
PM
18.0
22.0
18.0
2.31
0.473
19.33
0.29
-0.23
PP







•
PQ
20.0
21.0
16.0
2.65
0.591
19.00
0.18
-0.35
PR







1 •*
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0-
Insufficient data
x =
Determined to be an outlier
li = Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994	15 / 50
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PT
14.0
13.0
11.0
1.53
0.354
12.67
-2.02
-2.54

PV
13.0
10.0
16.0
3.00
0.709
13.00
-1.90
-2.42

PW








•
PY








«
Q
18.0
19.0
19.0
0.58
0.118
18.67
0.06
-0.46

QC








•
QJ


20.0





•
QK
20.0
23.0
1.73
0.354
21.00
0.87
0.35

QL
22.0
30.0
26.0
4.00
0.945
26.00
2.60
2.08

Qp








•
QQ








9
QT








•
QU
11.0
10.0
12.0
1.00
0.236
11.00
-2.60
-3.12

QW
21.0
23.0
24.0
1.53
0.354
22.67
1.45
0.92

QX








•/
QY








'mi
QZ
18.0
19.0
17.0
1.00
0.236
18.00
-0.17
-0.69

RC
18.0
19.0
15.0
2.08
0.473
17.33
-0.40
-0.92

RD








•
RE








•
RF








•
RG








•
RJ









RK








•
RL








. '•
RM
21.0
16.0
19.0
2.52
0.591
18.67
0.06
-0.46

RP









RR
19.0
19.0
18.0
0.58
0.118
18.67
0.06
-0.46

RV
15.0
15.0
16.0
0.58
0.118
15.33
-1.09
-1.62

RZ









S
21.0
18.0
19.0
1.53
0.354
19.33
0.29
-0.23

sc
16.0
18.0
16.0
1.15
0.236
16.67
-0.63
-1.15

SD
15.0
23.0
14.0
4.93
1.120
17.33
-0.40
-0.92

SF








•
SI
33.0
38.0
370
2.65
0.591
36.00
6.06
5.54
X
SL








•
SM
20.0
17.0
20.0
1.73
0.354
19.00
0.18
-0.35

SO








•
SR








•
ss
22.0
19.0
18.0
2.08
0.473
19.67
0.41
-0.12

ST
13.0
14.0
16.0
1.53
0.354
14.33
-1.44
-1.96

SW








•
sx








V
sz








. #
T
20.0
19.0
19.0
0.58
0.118
19.33
0.29
-0.23

• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
11 3 Below control limit
-------
(r	
16/50
*

EMSL-LV Performance Evaluation: Blind-B,
19-Apr-1994

	^
'
Strontium-89









1
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Normalized deviation
Average (grand-avg) (known) Tag
TA











TD
24.0

26.0
20.0
3.06
0.709
23.33 1.68
1.15

TE










L •-
TO










•
TH










• -
TI
16.0

16.0
18.0
1.15
0.236
16.67 -0.63
-1.15

TL
19.0

21.0
24.0
2.52
0.591
21.33 0.98
0.46

TN










•
TQ
18.0

16.0
15.0
1.53
0.354
16.33 -0.75
-1.27

TS
16.0

15.0
17.0
1.00
0.236
16.00 -0.86
-1.39

TU










•
TY










• '
U
16.0

18.0
18.0
1.15
0.236
17.33 -0.40
-0.92

UA










•
UE
16.0

19.0
22.0
3.00
0.709
19.00 0.18
•°-35

UG











UK










•
UN










•
UP
17.0

14.0
19.0
2.52
0.591
16.67 -0.63
-1.15

UQ










:
uw
27.0

29.0
29.0
1.15
0.236
28.33 3.41
2.89

UY










•
VA










• • %-
VC










, • i .
VG
19.0

18.0
16.0
1.53
0.354
17.67 -0.29
-0.81

VI











VJ










• -
VM











VN











vo










•\
VQ











VT










*-
W
17.0

18.0
18.0
0.58
0.118
17.67 -0.29
-0.81

WA










' •
X
21.0

21.0
20.0
0.58
0.118
20.67 0.75
0.23

z
20.0

20.0
19.0
0.58
0.118
19.67 0.41
-0.12





Data sorted by Laboratory Averaj
fe


Average

Tag

Lab
Average
Tag
Lab
Average
Tag
Lab
7.33

U

CP

12.00

CO
15.00

AK
8.67

il

PC

12.67

PT
15.33

RV
9.67

u

K

13.00

PV
15.33

CX
11.00

u

QU

14.33

ST
15.33

CG
11.00



CQ

14.33

DT
15.137

HP
12.00



GQ

15.00

CA
16.00

TS
• = No data submitted


TAG SYMBOLS

It = Above control limit
0 3 Insufficient data
^	

X
= Determined to be an outlier
U = Below control limit
			-	
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Strontium-89
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
16.33

TQ
18.67

Q
20.00

CK
16.33

DD
18.67

JS
20.33

I
16.33

BH
19.00

UE
20.33

A
16.33

AW
19.00

SM
20.67

X
16.67

UP
19.00

PQ
20.67

JE
16.67

TI
19.00

KX
20.67

EB
16.67

SC
19.00

CJ
20.67

E
17.00

J
19.00

BA
21.00

QK
17.33

U
19.00

AZ
21.33

TL
17.33

SD
19.00

AL
21.67

HU
17.33

RC
19.33

T
22.00

L
17.33

NJ
19.33

S
22.00

DO
17.33

IC
19.33

PM
22.67

QW
17.33

DE
19.33

N
23.00

AU
17.67

W
19.33

EL
23.00

AF
17.67

VG
19.33

EH
23.33

TD
17.67

DG
19.33

C
23.33

AE
18.00

QZ
19.33

BL
23.67

BO
18.00

MQ
19.67

Z
24.00

CS
18.00

HK
19.67

SS
24.00

BM
18.33

NO
19.67

NT
24.33

FU
18.33

M
19.67

LT
24.67

AJ
18.33

BC
19.67

DZ
25.00

D
18.67

RR
20.00

PB
26.00

QL
18.67

RM
20,00

JY
28.33

UW



20.00

FE
36.00
X
SI
17/50
responding labs
Frequency distribution
10-
¦ Jku
.#¦1.

-4	-'2	0	+2	+4
Normalized deviation of the mean from the known value
-r-
+6
• 3 No data submitted	TAG SYMBOLS	ft = Above control limit
[ 0 s Insufficient data	x = Determined to be an outlier	U = Below control limit
-------
=
18/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Strontium-89
% responding labs	Frequency distribution
10-
¦¦IhllllllL-LM
0	+2
		1	, ¦ ¦ T ¦ M --T—T—-T- ¦ i 		t
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994	19 / 50
Strontium-90	Statistical Summary	216 Participants
The known value of this nuclide is 14.0 pCi/1 with an expected precision of 5.0; the control limits
are 5.3 to 22.7; the warning regions are 5.3 to 8.2 and 19.8 to 22.7
Statistic	Respondents	Non-outliers
Mean
14.25
Grand Avg 14.13
Std. Dev.
2.45
2.14
Variance
5.99
4.59
% Coef. of Var.
17.17
15.15
% deviation of mean from known value
1.80
0.96
Norm. dev. of mean from known value
0.10
0.06
Median
14.00
14.00
% deviation of median from known value
0.00
0.00
Norm. dev. of median from known value
0.00
0.00
-------
(c	








	^
20/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
«

Strontium-90







¦
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
13.0
14.0
14.0
0.58
0.118
13.67
-0.16
-0.12

AA
14.0
12.0
15.0
1.53
0.354
13.67
-0.16
-0.12

AE
12.0
12.0
12.0
0.00
0.000
12.00
-0.74
-0.69

AF
13.0
13.0
14.0
0.58
0.118
13.33
-0.28
-0.23

AI








•
AJ
17.0
14.0
17.0
1.73
0.354
16.00
0.65
0.69

AK
16.0
16.0
16.0
0.00
0.000
16.00
0.65
0.69

AL
15.0
15.0
15.0
0.00
0.000
15.00
0.30
0.35

AO








•
AP








•
AR








•
AU
15.0
14.0
15.0
0.58
0.118
14.67
0.18
0.23

AW
17.0
19.0
17.0
1.15
0.236
17.67
1.22
1.27

AZ
14.0
14.0
14.0
0.00
0.000
14.00
-0.05
0.00

BA
14.0
14.0
15.0
0.58
0.118
14.33
0.07
0.12

BC
14.0
14.0
14.0
0.00
0.000
14.00
-0.05
0.00

BG
13.0
12.0
11.0
1.00
0.236
12.00
-0.74
-0.69

BH
15.0
15.0
15.0
0.00
0.000
15.00
0.30
0.35

BK









BL
13.0
13.0
16.0
1.73
0.354
14.00
-0.05
0.00

BM
16.0
17.0
15.0
1.00
0.236
16.00
0.65
0.69

BN








•
BO
12.0
12.0
11.0
0.58
0.118
11.67
-0.85
-0.81

BS








•
BW








•
C
13.0
13.0
14.0
0.58
0.118
13.33
-0.28
-0.23

CA
15.0
14.0
14.0
0.58
0.118
14.33
0.07
0.12

CE
15.0
12.0
13.0
1.53
0.354
13.33
-0.28
-0.23

CG
17.0
17.0
17.0
0.00
0.000
17.00
0.99
1.04

CJ
13.0
13.0
13.0
0.00
0.000
13.00
-0.39
-0.35

CK
17.0
18.0
20.0
1.53
0.354
18.33
1.45
1.50

CM








1 •
CO
11.0
16.0
15.0
2.65
0.591
14.00
-0.05
0.00

CP
7.0
8.0
12.0
2.65
0.591
9.00
-1.78
-1.73

CQ
13.0
11.0
13.0
1.15
0.236
12.33
-0.62
-0.58

CS
17.0
16.0
18.0
1.00
0.236
17.00
0.99
1.04

CX
15.0
15.0
16.0
0.58
0.118
15.33
0.42
0.46

D
14.0
14.0
14.0
0.00
0.000
14.00
-0.05
0.00

DB








•
DD
15.0
14.0
15.0
0.58
0.118
14.67
0.18
0.23

DE
16.0
16.0
17.0
0.58
0.118
16.33
0.76
0.81

DG
11.0
14.0
13.0
1.53
0.354
12.67
-0.51
-0.46

DI








C
DL








©
DM








D
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
b>-
Insufficient data
x =
Determined to be an outlier
U = Below control limit
	jj
-------
(?	







	^


EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
21/50
Strontium-90







Lab



Exper.
Rng anal

Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
15.0
17.0
12.0
2.52
0.591
14.67
0.18 -
0.23
DS







•
DT
16.0
16.0
15.0
0.58
0.118
15.67
0.53
0.58
DZ
13.0
13.0
14.0
0.58
0.118
13.33
-0.28
-0.23
E
15.0
13.0
13.0
1.15
0.236
13.67
-0.16
-0.12
EB
14.0
13.0
13.0
0.58
0.118
13.33
-0.28
-0.23
EH
14.0
14.0
12.0
1.15
0.236
13.33
-0.28
-0.23
EL
13.0
14.0
13.0
0.58
0.118
13.33
-0.28
-0.23
EO








EB







•
EV







•
EX







•
FE
15.0
14.0
16.0
1.00
0.236
15.00
0.30
0.35
FF







•
FJ







•
FL







*
- FN.








FU
12.0
13.0
12.0
0.58
0118
12.33
-0.62
-0.58
FZ







•
GE







•
GI








GQ
12.0
12.0
12.0
0.00
0.000
12.00
-0.74
-0.69
GT







•
GZ







•
HH








HI








HK
14.0
13.0
14.0
0.58
0118
13.67
-0.16
-0.12
HL








HP
12.0
12.0
10.0
1.15
0.236
11.33
-0.97
-0.92
HU
20.0
19.0
19.0
0.58
0.118
19.33
1.80
1.85
HX








I
18.0
16.0
17.0
1.00
0.236
1700
0.99
1.04
IA







•
IC
14.0
14.0
13.0
0.58
0.118
13.67
-0.16
-0.12
ID







•
IE







•
IU







•
J
14.0
14.0
14.0
0.00
0.000
14.00
-0.05
0.00
JE
14.0
14.0
14.0
0.00
0.000
14.00
-0.05
0.00
JG







•
JH







•
JN







•
JQ







•
JS
12.0
13.0
14.0
1.00
0.236
13.00
-0.39
-0.35
JY
13.0
15.0
17.0
2.00
0.473
15.00
0.30
0.35
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 a
v-	
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
	y
-------
(?	
22/50
\
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994

	^
Strontium-90








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
22.0
21.0
18.0
2.08
0.473
20.33
2.15
2.19

HE







•
KM








•
KT








•
KX
14.0
15.0
14.0
0.58
0.118
14.33
0.07
0.12

L
13.0
13.0
13.0
0.00
0.000
13.00
-0.39
-0.35

LF








•
LG








•
LL








•
LM








•
LR









LT
15.0
15.0
15.0
0.00
0.000
15.00
0.30
0.35

M
14.0
15.0
14.0
0.58
0.118
14.33
0.07
0.12

MA








. •
MN









MO









MP








V
MQ
15.0
15.0
14.0
0.58
0.118
14.67
0.18
0.23

MS








•
MV








•
MY








•
N
14.0
14.0
13.0
0.58
0.118
13.67
-0.16
-0.12

NA








•
NG









NH









NI








-•,
NJ
12.0
12.0
110
0.58
0.118
11.67
-0.85
-0.81

NK








< «
NO
11.0
11.0
10.0
0.58
0.118
10.67
-1.20
-1.15

NT
14.0
15.0
15.0
0.58
0.118
14.67
0.18
0.23

O









OF









OS








V
OX









OY








•
P








•
PA








• -
PB
15.0
15.0
15.0
0.00
0.000
15.00
0.30
0.35

PC
16.0
16.0
17.0
0.58
0.118
16.33
0.76
0.81

PG








•
PI








•
PM
13.0
13.0
13.0
0.00
0.000
13.00
-0.39
-0.35

PP
14.0
16.0
17.0
1.53
0.354
15.67
0.53
0.58

PQ
13.0
11.0
14.0
1.53
0.354
12.67
-0.51
-0.46

PR








•'[ '
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
= Below control limit
v-	








	'J
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
23/50
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PT
6.0
7.0
7.0
0.58
0.118
6.67
-2.59
-2.54
PV
13.0
11.0
10.0
1.53
0.354
11.33
-0.97
-0.92
PW








PY







- •
Q
16.0
15.0
18.0
1.53
0.354
16.33
0.76
0.81
QC







•
QJ
13.0
13.0
14.0
0.58
0.118
13.33
-0.28
-0.23
QK
14.0
14.0
15.0
0.58
0.118
14.33
0.07
0.12
QL
12.0
12.0
10.0
1.15
0.236
11.33
-0.97
-0.92
QP







•
QQ







»
QT







•
QU
28.0
24.0
27.0
2.08
0.473
26.33
4.23
4.27 x
QW
14.0
16.0
18.0
2.00
0.473
16.00
0.65
0.69
QX







•
QY







•
QZ
13.0
12.0
13.0
0.58
0.118
12.67
-0.51
-0.46
RC
14.0
12.0
11.0
1.53
0.354
12.33
-0.62
-0.58
RD








RE







•
RF







•
RG







. •
RJ







. •
RK








RL








RM
15.0
16.0
16.0
0.58
0.118
15.67
0.53
0.58
RP







•
RR
14.0
14.0
15.0
0.58
0.118
14.33
0.07
0.12
RV
20.0
18.0
180
1.15
0.236
18.67
1.57
1.62
RZ







•
S
16.0
15.0
16.0
0.58
0.118
15.67
0.53
0.58
SC
14.0
12.0
13.0
1.00
0.236
13.00
-0.39
-0.35
SD
15.0
14.0
14.0
0.58
0.118
14.33
0.07
0.12
SF







•
SI
18.0
18.0
19.0
0.58
0.118
18.33
1.45
1.50
SL







•
SM
9.0
11.0
9.0
1.15
0.236
9.67
-1.55
-1.50
SO







•
SR







•
ss
14.0
15.0
15.0
0.58
0.118
14.67
0.18
0.23
ST
13.0
12.0
13.0
0.58
0.118
12.67
-0.51
-0.46
SW
10.0
11.0
12.0
1.00
0.236
11.00
-1.09
-1.04
SX







•
sz
18.0
15.0
17.0
1.53
0.354
16.67
0.88
0.92
T
13.0
13.0
13.0
0.00
0.000
13.00
-0.39
-0.35
• = No data submitted TAG SYMBOLS It s Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 = Below control limit
-------
24/50

EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994

Strontium-90







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TA







•
TD
11.0
12.0
13.0
1.00
0.236
12.00
-0.74
-0.69
TE
18.0
21.0
17.0
2.08
0.473
18.67
1.57
1.62
TG








IH







* •
TI
15.0
17.0
13.0
2.00
0.473
15.00
0.30
0.35
TL
14.0
14.0
15.0
0.58
0.118
14.33
0.07
0.12
TN







•
TQ
16.0
15.0
13.0
1.53
0.354
14.67
0.18
0.23
TS
14.0
15.0
14.0
0.58
0.118
14.33
0.07
0.12
TU








TY








U
ib.U
15.U
15.0
0.58
0.118
15.33
0.42
0.46
UA








UE
14.0
15.0
16.0
1.00
0.236
15.00
0.30
0.35
UG








UK








UN








UP
13.0
16.0
17.0
2.08
0.473
15.33
0.42
0.46
UQ








uw
14.0
14.0
14.0
0.00
0.000
14.00
-0.05
0.00
UY







#
VA








vc







• v
VG
13.0
12.0
13.0
0.58
0.118
12.67
-0.51
-0.46
VI








VJ








VM








VN







•-
vo







•
VQ








VT








W
14.0
14.0
13.0
0.58
0.118
13.67
-0.16
-0.12
WA







•
X
9.0
11.0
11.0
1.15
0.236
10.33
-1.32
-1.27
Z
14.0
14.0
14.0
0.00
0.000
14.00
-0.05
0.00
Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
6.67
PT
11.33
QL
12.00
GQ
9.00
CP
11.33
PV
12.00
BG
9.67
SM
11.33
HP
12.00
AE
10.33
X
11.67
NJ
12.33
RC
10.67
NO
11.67
BO
12.33
FU
11.00
SW
12.00
TD
12.33
CQ
• s No data submitted

TAG SYMBOLS

It
= Above control limit
0 s Insufficient data

x s Determined to be an outlier
Ji
= Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
25/50
Strontium-90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
12.67

VG
14.00

«J£a
15.00

FE
12.67

ST
14.00

J
15.00

BH
12.67

QZ
14.00

D
15.00

AL
12.67

PQ
14.00

CO
15.33

UP
12.67

DG
14.00

BL
15.33

U
13.00

T
14.00

BC
15.33

cx
13.00

SC
' 14.00

AZ
15.67

S
13.00

PM
14.33

TS
15.67

RM
13.00

L
14.33

TL
15.67

PP
13.00

JS
14.33

SD
15.67

DT
13.00

CJ
14.33

RR
16.00

QW
13.33

QJ
14.33

QK
16.00

BM
13.33

EL
14.33

M
16.00

AK
13.33

EH
14.33

KX
16.00

AJ
13.33

EB
14.33

CA
16.33

Q
13.33

DZ
14.33

BA
16.33

PC
13.33

CE
14.67

TQ
16.33

DE
13.33

C
14.67

SS
16.67

SZ
13.33

AF
14.67

NT
17.00

I
13.67

W
14.67

MQ
17.00

CS
13.67

N
14.67

DO
17.00

CG
13.67

IC
14.67

DD
17.67

AW
13.67

HK
14.67

AU
18.33

SI
13.67

E
15.00

UE
18.33

CK
13.67

AA
15.00

TT
18.67

TE
13.67

A
15.00

PB
18.67

RV
14.00

Z
15.00

LT
19.33

HU
14.00

UW
15.00

JY
20.33
26.33
X
K
QU
% responding labs
Frequency distribution
10-

jUh
¦f-
i	i **
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
-6
-I-
4-6
• s No data submitted	TAG SYMBOLS	It = Above control limit
10 = Insufficient data	x = Determined to be an outlier	II s Below control limit
-------
rt
26 i 50	EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Strontium-90
%
10
o
responding labs	Frequency distribution
-i	1	i	1
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
27/50
Cobalt-60
Statistical Summary
216 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
70(32.4 %) Failed to respond ,
140(64.8 %) Within all limits
+ \J \
* \ rv
* \J \
* x rs.
* >1 rS.
* \.l »•«.
* X [x.
* >1 IS.
	
2(0.9 %) In warning zone
4( 1.9 %) Outliers »*
I
11 rrEO-^
but within control
Statistic
Respondents
Non-outliers
Mean
20.12
Grand Avg 20.12
Std. Dev.
2.60
1.83
Variance
6.75
3.35
% Coef. of Var.
12.92
9.10
% deviation of mean from known value
0.59
0.60
Norm. dev. of mean from known value
0.05
0.07
Median
20.00
20.00
% deviation of median from known value
0.00
0.Q0
Norm. dev. of median from known value
0.00
0.00 ,
4(2.7 %) More than 3 norm. S.D.
2(1.4 %) Between 2 and
, 128(87.7 %) Within 1 norm. S.D.
of known value
>) Between 1 and 2 norm. S.D.
-------
(, =
28/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
	
Cobalt-60







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
21.0
21.0
21.0
0.00
0.000
21.00
0.30
0.35
AA
19.0
20.0
19.0
0.58
0.118
19.33
-0.27
-0.23
AE
19.0
22.0
23.0
2.08
0.473
21.33
0.42
0.46
AF
22.0
19.0
19.0
1.73
0.354
20.00
-0.04
0.00
AI
20.0
20.0
19.0
0.58
0.118
19.67
-0.16
-0.12
AJ
23.0
25.0
23.0
1.15
0.236
23.67
1.23
1.27
AK
19.0
19.0
19.0
0.00
0.000
19.00
-0.39
-0.35
AL
29.0
25.0
23.0
3.06
0.709
25.67
1.92
1.96
AO







•
AP
19.0
21.0
21.0
1.15
0.236
20.33
0.07
0.12
AR







•
AU
24.0
23.0
19.0
2.65
0.591
22.00
0.65
0.69
AW
16.0
18.0
16.0
1.15
0.236
16.67
-1.20
-1.15
AZ
20.0
19.0
18.0
1.00
0.236
19.00
-0.39
-0.35
BA
21.0
21.0
24.0
1.73
0.354
22.00
0.65
0.69
BC
19.0
19.0
18.0
0.58
0.118
18.67
-0.50
-0.46
BG
27.0
22.0
26.0
2.65
0.591
25.00
1.69
1.73
BH
22.0
22.0
18.0
2.31
0.473
20.67
0.19
0.23
BK
20.0
19.0
20.0
0.58
0.118
19.67
-0.16
-0.12
BL
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00
BM
20.0
22.0
21.0
1.00
0.236
21.00
0.30
0.35
BN
18.0
20.0
20.0
1.15
0.236
19.33
-0.27
-0.23
BO
20.0
23.0
19.0
2.08
0.473
20.67
0.19
0.23
BS








BW
18.0
18.0
5.0
7.51
2.020
13.67
-2.24
-2.19
C
20.0
19.0
19.0
0.58
0.118
19.33
-0.27
-0.23
CA
20.0
20.0
21.0
0.58
0.118
20.33
0.07
0.12
CE
18.0
18.0
22.0
2.31
0.473
19.33
-0.27
-0.23
CG








CJ
25.0
26.0
20.0
3.21
0.709
23.67
1.23
1.27
CK
21.0
23.0
22.0
1.00
0.236
22.00
0.65
0.69
CM
21.0
19.0
26.0
3.61
0.827
22.00
0.65
0.69
CO
21.0
19.0
24.0
2.52
0.591
21.33
0.42
0.46
CP
20.0
20.0
21.0
0.58
0.118
20.33
0.07
0.12
CQ
23.0
22.0
23.0
0.58
0.118
22.67
0.88
0.92
CS
21.0
22.0
22.0
0.58
0.118
21.67
0.54
0.58
CX
21.0
22.0
20.0
1.00
0.236
21.00
0.30
0.35
D
20.0
19.0
20.0
0.58
0.118
19.67
-0.16
-0.12
DB







•
DD
18.0
18.0
19.0
0.58
0.118
18.33
-0.62
-0.58
DE
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00
DG
22.0
21.0
21.0
0.58
0.118
21.33
0.42
0.46
DI







• .
DL
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00
DM
20.0
21.0
22.0
1.00
0.236
21.00
0.30
0.35
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
b>-
Insufficient data
x =
Determined to be an outlier
!!• = Below control limit
	'J
-------
	
v.

EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
	
29/50
Cobalt-60








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
20.0
23.0
19.0
2.08
0.473
20.67
0.19
0.23

DS








• ¦
DT
22.0
19.0
21.0
1.53
0.354
20.67
0.19
0.23

DZ
18.0
17.0
18.0
0.58
0.118
17.67
-0.85
-0.81

E
21.0
20.0
21.0
0.58
0.118
20.67
0.19
0.23

EB
19.0
19.0
19.0
0.00
0.000
19.00
-0.39
-0.35

EH
18.0
20.0
20.0
1.15
0.236
19.33
-0.27
-0.23

EL
19.0
20.0
18.0
1.00
0.236
19.00
-0.39
-0.35

EO








•
ER








, «
EV








«
EX








•
FE
21.0
18.0
15.0
3.00
0.709
18.00
-0.73
-0.69

FF








•
FJ
22.0
23.0
21.0
1.00
0.236
22.00
0.65
0.69

FL
20.0
21.0
21.0
0.58
0.118
20.67
0.19
0.23

FN








¦
FU
21.0
21.0
18.0
1.73
0.354
20.00
-0.04
0.00

FZ
24.0
23.0
24.0
0.58
0.118
23.67
1.23
1.27

GE
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00

GI
19.0
20.0
19.0
0.58
0.118
19.33
-0.27
-0.23

GQ
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00

GT








•
GZ








«
HH








•
HI
36.0
31,0
27.0
4;51
2;120
31.33
3.88,'
3; 93
X
HK
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00

HL
19.0
21.0
22.0
1.53
0.354
20.67
0.19
0.23

HP
21.0
22.0
22.0
0.58
0.118
21.67
0.54
0.58

HU
17.0
17.0
16.0
0.58
0.118
16.67
-1.20
-1.15

HX








-
I
22.0
20.0
23.0
1.53
0.354
21.67
0.54
0.58

IA
17.0
20.0
18.0
1.53
0.354
18.33
-0.62
-0.58

IC
21.0
20.0
20.0
0.58
0.118
20.33
0.07
0.12

ID








•
IE








•
IU








•
J
20.0
19.0
19.0
0.58
0.118
19.33
-0.27
-0.23

JE
20.0
20.0
21.0
0.58
0.118
20.33
0.07
0.12

JG
18.0
16.0
22.0
3.06
0.709
18.67
-0.50
-0.46

JH








•
JN








•
JQ









JS
19.0
19.0
20.0
0.58
0.118
19.33
-0.27
-0.23

JY
23.0
20.0
23.0
1.73
0.354
22.00
0.65
0.69

• =
No data submitted

TAG SYMBOLS

1! s Above control limit
10-
Insufficient data
x =
Determined to be an outlier
U = Below control limit
	'J
-------
30 / 50	EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
K
22.0
23.0
24.0
1.00
0.236
23.00
1.00
1.04

KE








• -
KM
19.0
22.0
19.0
1.73
0.354
20.00
-0.04
0.00

KT








•
KX
21.0
20.0
23.0
1.53
0.354
21.33
0.42
0.46

L
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00

LF
21.0
22.0
18.0
2.08
0.473
20.33
0.07
0 12

LG









LL









LM








,• ¦
LR
20.0
19.0
22.0
1.53
0.354
20.33
0.07
0.12

LT
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00

M
19.0
18.0
18.0
0.58
0.118
18.33
-0.62
-0.58

MA
23.0
23.0
22.0
0.58
0.118
22.67
0.88
0.92

MN









MO








•
MP
14.0
17.0
17.0
1.73
0.354
16.00
-1.43
-1.39

MQ
22.0
25.0
21.0
2.08
0.473
22.67
0.88
0.92

MS








V
MV
22.0
21.0
22.0
0.58
0.118
21.67
0.54
0.58

MY









N
22.0
20.0
22.0
1.15
0.236
21.33
0.42
0.46

NA








•
NG









NH
20.0
21.0
19.0
1.00
0.236
20.00
-0.04
0.00

NI








•
NJ
19.0
19.0
19.0
0.00
0.000
19.00
-0.39
-0.35

NK
19.0
18.0
20.0
1.00
0.236
19.00
-0.39
-0.35

NO
15.0
15.0
15.0
0.00
0.000
15.00
-1.77
-1.73

NT








•"
0
21.0
21.0
21.0
0.00
0.000
21.00
0.30
0.35

OF









OS









OX









OY








•
P
31.0
32.0
31.0
0.58
0.118
31.33
3.88
3.93
X
PA








•
PB
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00

PC
22.0
23.0
24.0
1.00
0.236
23.00
1.00
1.04

PG








•
PI
19.0
19.0
19.0
0.00
0.000
19.00
-0.39
-0.35

PM
23.0
21.0
21.0
1.15
0.236
21.67
0.54
0.58

PP
20.0
24.0
23.0
2.08
0.473
22.33
0.77
0.81

PQ
20.0
19.0
20.0
0.58
0.118
19.67
-0.16
-0.12

PR








•
• =
[0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
U = Below control limit
	4/
-------
	








	
v.

EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
31/50
Cobalt-60








Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PT
9.0
9.0
9.0
0.00
0.000
9.00
: -3.85
-3.81
X
PV
23.0
20.0
25.0
2.52
0.591
22.67
0.88
0.92

PW
20.0
21.0
20.0
0.58
0.118
20.33
0.07
0.12

PY









Q
18.0
19.0
20.0
1.00
0.236
19.00
-0.39
-0.35

QC








•
QJ
20.0
20.0
23.0
1.73
0.354
21.00
0.30
0.35

QK
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00

QL
19.0
19.0
19.0
0.00
0.000
19.00
-0.39
-0.35

QP
19.0
22.0
26.0
3.51
0.827
22.33
0.77
0.81

QQ








•
QT
20.0
19.0
18.0
1.00
0.236
19.00
-0.39
-0.35

QU
19.0
17.0
18.0
1.00
0.236
18.00
-0.73
-0.69

QW
19.0
19.0
24.0
2.89
0.591
20.67
0.19
0.23

QX
25.0
26.0
24.0
1.00
0.236
25.00
1.69
1.73

QY








. •
QZ
19.0
19.0
18.0
0.58
0.118
18.67
-0.50
-0.46

RC
18.0
18.0
190
0.58
0.118
18.33
-0.62
-0.58

RD









RE








•.
RF
9.0
8.0
9.0
0,58
0.118
8.67
-3.97
-3.93
X
RG








' •
RJ








•
RE









RL








•
RM
17.0
19.0
19.0
1.15
0.236
18.33
-0.62
-0.58

RP








•
RR
19.0
20.0
23.0
2.08
0.473
20.67
0.19
0.23

RV
20.0
16.0
20.0
2.31
0.473
18.67
-0.50
-0.46

RZ
18.0
20.0
20.0
1.15
0.236
19.33
-0.27
-0.23

S
21.0
21.0
21.0
0.00
0.000
21.00
0.30
0.35

sc
20.0
19.0
19.0
0.58
0.118
19.33
-0.27
-0.23

SD
22.0
15.0
22.0
4.04
0.827
19.67
-0.16
-0.12

SF
20.0
20.0
19.0
0.58
0.118
19.67
-0.16
-0.12

SI
20.0
21.0
21.0
0.58
0.118
20.67
0.19
0.23

SL








•
SM
19.0
19.0
20.0
0.58
0.118
19.33
-0.27
-0.23

SO








• ,
SR
23.0
20.0
21.0
1.53
0.354
21.33
0.42
0.46

ss
19.0
20.0
17.0
1.53
0.354
18.67
-0.50
-0.46

ST
19.0
19.0
19.0
0.00
0.000
19.00
-0.39
-0.35

SW
19.0
19.0
18.0
0.58
0.118
18.67
-0.50
-0.46

sx
17.0
17.0
25.0
4.62
0.945
19.67
-0.16
-0.12

sz
20.0
20.0
20.0
0.00
0.000
20.00
-0.04
0.00

T
19.0
18.0
18.0
0.58
0.118
18.33
-0.62
-0.58

• 3
No data submitted

TAG SYMBOLS

IT = Above control limit
in

Insufficient data
x =
Determined to be an outlier
U = Below control limit
	/J
-------
32/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Cobalt-60








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TA
14.0
14.0
14.0
0.00
0.000
14.00
-2.12
-2.08

TD
20.0
21.0
22.0
1.00
0.236
21.00
0.30
0.35

TE
19.0
20.0
19.0
0.58
0.118
19.33
-0.27
-0.23

TO








•
TH
21.0
22.0
21.0
0.58
0.118
21.33
0.42
0.46

TI
23.0
22.0
23.0
0.58
0.118
22.67
0.88
0.92

TL
18.0
18.0
29.0
6.35
1.570
21.67
0.54
0.58

TN








• -
TQ
18.0
20.0
19.0
1.00
0.236
19.00
-0.39
-0.35

TS
18.0
20.0
19.0
1.00
0.236
19.00
-0.39
-0.35

TU
18.0
19.0
18.0
0.58
0.118
18.33
-0.62
-0.58

TY








• .
U
21.0
21.0
21.0
0.00
0.000
21.00
0.30
0.35

UA








•
UE
21.0
21.0
21.0
0.00
0.000
21.00
0.30
0.35

UQ









UK









UN
19.0
21.0
21.0
1.15
0.236
20.33
0.07
0.12

UP
16.0
18.0
19.0
1.53
0.354
17.67
-0.85
-0.81

UQ









uw
20.0
20.0
17.0
1.73
0.354
19.00
-0.39
-0.35

UY
20.0
17.0
190
1.53
0.354
18.67
-0.50
-0.46

VA








••
VC








.*
VG
19.0
19.0
20.0
0.58
0.118
19.33
-0.27
-0.23

VI








C
VJ








•
VM








#'
VN









vo
20.0
19.0
24.0
2.65
0.591
21.00
0.30
0.35

VQ









VT
17.0
20.0
23.0
3.00
0.709
20.00
-0.04
0.00

W
18.0
18.0
17.0
0.58
0.118
17.67
-0.85
-0.81

WA
19.0
19.0
19.0
0.00
0.000
19.00
-0.39
-0.35

X
21.0
21.0
21.0
0.00
0.000
21.00
0.30
0.35

Z
20.0
20.0
18.0
1.15
0.236
19.33
-0.27
-0.23

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
8.67
X
RF
16.67
HU
18.00
FE
9.00
X
PT
16.67
AW
18.33
TU
13.67

BW
17.67
W
18.33
T
14.00

TA
17.67
UP
18.33
RM
15.00

NO
17.67
DZ
18.33
RC
16.00

MP
18.00
QU
18.33
M
• s No data submitted

TAG SYMBOLS

ir
h Above control limit
0 = Insufficient data

x = Determined to be an outlier
u
= Below control limit

-------
¦A
EMSLrLV Performance Evaluation: Blind-B, 19-Apr-1994	33/50
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.33

LA
19.67

D
21.00

S
18.33

DD
19.67

BK
21.00

QJ
18.67

UY
19.67

AI
21.00

O
18.67

SW
20.00

VT
21.00

DM
18.67

ss
20.00

SZ
21.00

CX
18.67

RV
20.00

QK
21.00

BM
18.67

QZ
20.00

PB
21.00

A
18.67

JG
20.00

NH
21.33

TH
18.67

BC
20.00

LT
21.33

SR
19.00

WA
20.00

L
21.33

N
19.00

UW
20.00

KM
21.33

KX
19.00

TS
20.00

HK
21.33

DG
19.00

TQ
20.00

GQ
21.33

CO
19.00

ST
20.00

GE
21.33

AE
19.00

QT
' 20.00

FU
21.67

TL
19.00

QL
20.00

DL
21.67

PM
19.00

Q
20.00

DE
21.67

MV
19.00

PI
20.00

BL
21.67

I
19.00

NK
20.00

AF
21.67

HP
19.00

NJ
20.33

UN
21.67

CS
19.00

EL
20.33

PW
22.00

JY
19.00

EB
20.33

LR
22.00

FJ
19.00

AZ
20.33

LF
22.00

CM
19.00

AK
20.33

JE
22.00

CK
19.33

Z
20.33

IC
22.00

BA
19.33

VG
20.33

CP
22.00

AU
19.33

TE
20.33

CA
22.33

QP
19.33

SM
20.33

AP
22.33

PP
19.33

SC
20.67

SI
22.67

TI
19.33

RZ
20.67

RR
22.67

PV
19.33

JS
20.67

QW
22.67

MQ
19.33

J
20.67

HL
22.67

MA
19.33

GI
20.67

FL
22.67

CQ
19.33

EH
20.67

E
23.00

PC
19.33

CE
20.67

DT
23.00

K
19.33

C
20.67

DO
23.67

FZ
19.33

BN
20.67

BO
23.67

CJ
19.33

AA
20.67

BH
23.67

AJ
19.67

sx
21.00

X
25.00

QX
19.67

SF
21.00

VO
25.00

BG
19.67

SD
21.00

UE
25.67

AL
19.67

PQ
21.00

U
31.33
X
P



21.00

TD
31.33
X
HI
• s No data submitted

TAG SYMBOLS

It
= Above control limit
0 = Insufficient data

x = Determined to be an outlier
Jl
= Below control limit
-------
34 / 50	EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Cobalt-60
% responding labs	Frequency distribution
10-
i	i	T* i 'f [ Bl	T_ —T	,	T	,	,
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
~ T	I "I	I	I
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
35/50
Cesium-134
Statistical Summary
216 Participants
The known value of this nuclide is 34.0 pCi/1 with an expected precision of 5.0; the control limits
are 25.3 to 42.7; the warning regions are 25.3 to 28.2 and 39.8 to 42.7
69(31.9 %) Failed to respond •
. 124(57.4 %) Within all limits



3( 1.4 %) Out of control •' ^SN.Ts<

13(6.0 %) In warning zone
but not an outlier ^^CTT-r—*—
I
I I
but within control
Statistic
Respondents
Non-outliers
Mean
31.36
Grand Avg 31.45
Std. Dev.
4.25
2.72
Variance
18.08
7.41
% Coef. of Var.
13.56
8.66
% deviation of mean from known value
-7.76
-7.51
Norm. dev. of mean from known value
-0.62
-0.94
Median
31.67
31.67
% deviation of median from known value
-6.86
-6.86
Norm. dev. of median from known value
-0.55
-0.86
11 (7.5 %) More than 3 norm. S.D.
12(8.2 %) Between 2
. 74(50.3 %) Within 1 norm. S.D.
of known value
50(34.0 %) Between 1 and 2 norm. S.D.
-------
/?	:	
36/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994

	^
Cesivtm-134








Lab
Res. 1
Res. 2

Exper.
Rng anal

¦Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
34.0
35.0
34.0
0.58
0.118
34.33
1.00
0.12

AA
30.0
31.0
33.0
1.53
0.354
31.33
-0.04
-0.92

AE
32.0
33.0
33.0
0.58
0.118
32.67
0.42
-0.46

AF
33.0
32.0
31.0
1.00
0.236
32.00
0.19
-0.69

AI
31.0
31.0
31.0
0.00
0.000
31.00
-0.15
-1.04

AJ
34.0
35.0
34.0
0.58
0.118
34.33
1.00
0.12

AK
32.0
33.0
32.0
0.58
0.118
32.33
0.31
-0.58

AL
37.0
44.0
41.0
3.51
0.827
40.67
3.19
2.31

AO








•
AP
32.0
34.0
31.0
1.53
0.354
32.33
0.31
-0.58

AR









AU
34.0
33.0
31.0
1.53
0.354
32.67
0.42
-0.46

AW
27.0
30.0
27.0
1.73
0.354
28.00
-1.19
-2.08

AZ
37.0
36.0
34.0
1.53
0.354
35.67
1.46
0.58

BA
31.0
33.0
32.0
1.00
0.236
32.00
0.19
-0.69

BC
32.0
30.0
30.0
1.15
0.236
30.67
-0.27
-1.15

BG
51.0
54.0
47.0
3.51
0.827
50.67
6.66
6*77
X
BH
31.0
30.0
31.0
0.58
0.118
30.67
-0.27
-1.15

BK
34.0
33.0
33.0
0.58
0.118
33.33
0.65
-0.23

BL
33.0
34.0
32.0
1.00
0.236
33.00
0.54
-0.35

BM
33.0
31.0
32.0
1.00
0.236
32.00
0.19
-0.69

BN
32.0
31.0
31.0
0.58
0.118
31.33
-0.04
-0.92

BO
31.0
32.0
34.0
1.53
0.354
32.33
0.31
-0.58

BS








•
BW
17.0
17.0
18.0
0.58
0.118
17.33
-4.89
-5.77"
X
C
30.0
30.0
32.0
1.15
0.236
30.67
-0.27
-1.15

CA
32.0
33.0
32.0
0.58
0.118
32.33
0.31
-0.58

CE
32.0
34.0
31.0
1.53
0.354
32.33
0.31
-0.58

CG









CJ
32.0
35.0
35.0
1.73
0.354
34.00
0.88
0.00

CK
37.0
33.0
35.0
2.00
0.473
35.00
1.23
0.35

CM
15.0
16.0
19.0
2.08
0.473
16.67
-5.12
,-0.00
. X
CO
31.0
34.0
34.0
1.73
0.354
33.00
0.54
-0.35

CP
32.0
32.0
33.0
0.58
0.118
32.33
0.31
-0.58

CQ
30.0
26.0
27.0
2.08
0.473
27.67
-1.31
-2.19

CS
32.0
32.0
34.0
1.15
0.236
32.67
0.42
-0.46

CX
33.0
33.0
33.0
0.00
0.000
33.00
0.54
-0.35

D
33.0
30.0
30.0
1.73
0.354
31.00
-0.15
-1.04

DB








•
DD
30.0
30.0
31.0
0.58
0.118
30.33
-0.39
-1.27

DE
32.0
32.0
32.0
0.00
0.000
32.00
0.19
-0.69

DG
28.0
26.0
26.0
1.15
0.236
26.67
-1.66
-2.54

DI








•
DL
27.0
30.0
27.0
1.73
0.354
28.00
-1.19
-2.08

DM
33.0
33.0
34.0
0.58
0.118
33.33
0.65
-0.23

• =
No data submitted

TAG SYMBOLS

1t = Above control limit
H0 =
Insufficient data
x =
Determined to be an outlier
U = Below control limit
	>J
-------
	V
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994	37/50
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
DO
28.0
31.0
28.0
1.73
0.354
29.00
-0.85
-1.73

DS







~ •
DT
29.0
30.0
34.0
2.65
0.591
31.00
-0.15
-1.04

DZ
25.0
25.0
27.0
1.15
0.236
25.67
-2.00
-2.89

E
32.0
32.0
31.0
0.58
0.118
31.67
0.08
-0.81

EB
30.0
29.0
30.0
0.58
0.118
29.67
-0.62
-1.50

EH
37.0
32.0
40.0
4.04
0.945
36.33
1.69
0.81

EL
33.0
34.0
32.0
1.00
0.236
33.00
0.54
-0.35

EO








•
ER








*
EV









EX








•-
FE
31.0
30.0
30.0
0.58
0.118
30.33
-0.39
-1 27

FF








•
FJ
33.0
30.0
34.0
2.08
0.473
32.33
0.31
-0.58

FL
34.0
33.0
33.0
0.58
0.118
33.33
0.65
-0.23

FN









FU
30.0
29.0
29.0
0.58
0.118
29.33
-0.73
-1.62

FZ
32.0
32.0
32.0
0.00
0.000
32.00
0.19
-0.69

GE
27.0
30.0
27.0
1.73
0.354
28.00
-1.19
-2.08

GI
30.0
29.0
28.0
1.00
0.236
29.00
-0.85
-1.73

GQ
33.0
33.0
33.0
0.00
0.000
33.00
0.54
-0.35

GT









GZ








•
HH









HI
40.0
47.0
47.0
4.04
0.82T
44.67
4.58
3,70
X
HK
33.0
31.0
31.0
1.15
0.236
31.67
0.08
-0.81

HL
32.0
31.0
33.0
1.00
0.236
32.00
0.19
-0.69

HP
36.0
38.0
37.0
1.00
0.236
37.00
1.92
1.04

HU
26.0
26.0
26.0
0.00
0.000
26.00
-1.89
-2.77

HX








• '
I
32.0
31.0
34.0
1.53
0.354
32.33
0.31
-0.58

IA
29.0
27.0
27.0
1.15
0.236
27.67
-1.31
-2.19

IC
38.0
36.0
35.0
1.53
0.354
36.33
1.69
0.81

ID








•
EE








•
IU








•
J
32.0
31.0
32.0
0.58
0.118
31.67
0.08
-0.81

JE
30.0
31.0
31.0
0.58
0.118
30.67
-0.27
-1.15

JG
30.0
30.0
23.0
4.04
0.827
27.67
-1.31
-2.19

JH








•
JN








•
JQ








• •
JS
32.0
32.0
33.0
0.58
0.118
32.33
0.31
-0.58

JY
33.0
30.0
32.0
1.53
0.354
31.67
0.08
-0.81

in "I
• Q
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
JJ s Below control limit
-------
ft	-
38/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
K
29.0
30.0
28.0
1.00
0.236
29.00
-0.85
-1.73

KE








• -
KM
31.0
30.0
30.0
0.58
0.118
30.33
-0.39
-1.27

KT








•
KX
31.0
32.0
30.0
1.00
0.236
31.00
-0.15
-1.04

L
35.0
34.0
34.0
0.58
0.118
34.33
1.00
0.12

LF
31.0
31.0
34.0
1.73
0.354
32.00
0.19
-0.69

LG








•
LL








•
LM








•
LR
46.0
48.0
42.0
3.06
0.709
45.33
4.81
3.93
X
LT
31.0
31.0
31.0
0.00
0.000
31.00
-0.15
-1.04

M
29.0
28.0
29.0
0.58
0.118
28.67
-0.96
-1.85

MA
35.0
35.0
35.0
0.00
0.000
35.00
1.23
0.35

MN








9
MO








0
MP
32.0
34.0
34.0
1.15
0.236
33.33
0.65
-0.23

MQ
28.0
30.0
27.0
1.53
0.354
28.33
-1.08
-1.96

MS








ft
MV
33.0
32.0
34.0
1.00
0.236
33.00
0.54
-0.35

MY








•
N
32.0
31.0
31.0
0.58
0.118
31.33
-0.04
-0.92

NA








•
NG









NH
31.0
30.0
31.0
0.58
0.118
30.67
-0.27
-1.15

NT








•
NJ
29.0
29.0
29.0
0.00
0.000
29.00
-0.85
-1.73

NK
35.0
32.0
36.0
2.08
0.473
34.33
1.00
0.12

NO
22.0
24.0
26.0
2.00
0.473
24.00
-2.58
-3.46

NT








• ,
O
36.0
36.0
35.0
0.58
0.118
35.67
1.46
0.58

OF








*
OS








•
OX








•
OY








•
P
37.0
36.0
36.0
0.58
0.118
36.33
1.69
0.81

PA








O
PB
30.0
30.0
30.0
0.00
0.000
30.00
-0.50
-1.39

PC
36.0
38.0
39.0
1.53
0.354
37.67
216
1.27

PG








o
PI
30.0
29.0
30.0
0.58
0.118
29.67
-0.62
-1.50

PM
27.0
26.0
27.0
0.58
0.118
26.67
-1.66
-2.54

PP
33.0
32.0
35.0
1.53
0.354
33.33
0.65
-0.23

PQ
30.0
31.0
31.0
0.58
0.118
30.67
-0.27
-1.15

PR








0
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
li = Below control limit
-------
f,	

EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
	"	
39/50
Cesium-134








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
PT
13.0
15.0
13.0
1.15
0.238
13.67
-6.16
-7.04
X
PV
31.0
32.0
30.0
1.00
0.236
31.00
-0.15
-1.04

PW
30.0
30.0
30.0
0.00
0.000
30.00
-0.50
-1.39

PY







•
Q
28.0
28.0
30.0
1.15
0.236
28.67
-0.96
-1.85

QC







•
QJ
28.0
31.0
27.0
2.08
0.473
28.67
-0.96
-1.85

QK
34.0
35.0
36.0
1.00
0.236
35.00
1.23
0.35

QL
30.0
26.0
27.0
2.08
0.473
27.67
-1.31
-2.19

QP
31.0
24.0
34.0
5.13
1.345
29.67
-0.62
-1.50

QQ







9
QT
32.0
31.0
31.0
0.58
0.118
31.33
-0.04
-0.92

QU
18.0
21.0
20.0
1.53
0.354
19;67
-4.08
-4.97
X
QW
23.0
30.0
18.0
6.03
1.795
23.67
-2.69
-3.58
U
QX
32.0
31.0
32.0
0.58
0.118
31.67
0.08
-0.81

QY








•
QZ
30.0
29.0
27.0
1.53
0.354
28.67
-0.96
-1.85

RC
24.0
26.0
25.0
1.00
0.236
25.00
-2.23
-3.12

RD








_ #.
RE








•
RF
35.0
33.0
30.0
2.52
0.591
32.67
0.42
-0.46

RG








•
RJ








•
RK









RL








•
RM
29.0
35.0
33.0
3.06
0.709
32.33
0.31
-0 58

RP









RR
31.0
31.0
33.0
1.15
0.236
31.67
0.08
-0.81

RV
25.0
25.0
26.0
0.58
0.118
25.33
-2.12
-3.00

RZ
33.0
33.0
33.0
0.00
0.000
33.00
0.54
-0.35

S
33.0
33.0
33.0
0.00
0.000
33.00
0.54
-0.35

sc
28.0
31.0
27.0
2.08
0.473
28.67
-0.96
-1.85

SD
35.0
35.0
34.0
0.58
0.118
34.67
1.12
0.23

SF
30.0
28.0
30.0
1.15
0.236
29.33
-0.73
-1.62

SI
32.0
33.0
33.0
0.58
0.118
32.67
0.42
-0.46

9L








• *
SM
29.0
29.0
29.0
0.00
0.000
29.00
-0.85
-1.73

SO








•
SR
32.0
30.0
31.0
1.00
0.236
31.00
-0.15
-1.04

ss
32.0
29.0
30.0
1.53
0.354
30.33
-0.39
-1.27

ST
30.0
30.0
30.0
0.00
0.000
30.00
-0.50
-1.39

SW
32.0
32.0
31.0
0.58
0.118
31.67
0.08
-0.81

sx
38.0
39.0
35.0
2.08
0.473
37.33
2.04
1.15

sz
31.0
30.0
31.0
0.58
0.118
30.67
-0.27
-1.15

T
33.0
32.0
32.0
0.58
0.118
32.33
0.31
-0.58

• 3
No data submitted

TAG SYMBOLS

ft = Above control limit
in
Q
—V
Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
-—		/y
-------
f,	
40/50

EMSL-LV Performance Evaluation: Blind-B,
19-Apr-1994

	^
Cesium-134










*
Lab
Res. 1




Exper.
Rng anal


Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TA
31.0

31.0
31.0
0.00
0.000
31.00
-0.15
-1.04

TD
33.0

28.0
31.0
2.52
0.591
30.67
-0.27
-1.15

TE
29.0

30.0
30.0
0.58
0.118
29.67
-0.62
-1.50

TG











•
TH
34.0

33.0
33.0
0.58
0.118
33.33
0.65
-0.23

TI
32.0

31.0
32.0
0.58
0.118
31.67
0.08
-0.81

TL
36.0

30.0
29.0
3.79
0.827
31.67
0.08
-0.81

TN











•
TQ
32.0

32.0
30.0
1.15
0.236
31.33
-0.04
-0.92

TS
29.0

28.0
30.0
1.00
0.236
29.00
-0.85
-1.73

TU
32.0

30.0
32.0
1.15
0.236
31.33
-0.04
-0.92

TY











•
U
34.0

35.0
34.0
0.58
0.118
34.33
1.00
0.12

UA











• .
UE
34.0

33.0
34.0
0.58
0.118
33.67
0.77
-0.12

UG











' •
UK
29.0

41.0
35.0
6.00
1.795
35.00
1.23
0.35

UN
34.0

34.0
33.0
0.58
0.118
33.67
0.77
-0.12

UP
26.0

30.0
33.0
3.51
0.827
29.67
-0.62
-1.50

UQ











•
uw
36.0

36.0
36.0
0.00
0.000
36.00
1.58
0.69

UY
32.0

31.0
29.0
1.53
0.354
30.67
-0.27
-1.15
'
VA











•
vc











' •'
VG
30.0

31.0
32.0
1.00
0.236
31.00
-0.15
-1.04

VI











•
VJ












VM











•
VN











•
vo
29.0

34.0
30.0
2.65
0.591
31.00
-0.15
-1.04

VQ











•
VT
31.0

34.0
38.0
3.51
0.827
34.33
1.00
0.12

W
29.0

34.0
32.0
2.52
0.591
31.67
0.08
-0.81

WA
30.0

31.0
30.0
0.58
0.118
30.33
-0.39
-1.27

X
30.0

30.0
31.0
0.58
0.118
30.33
-0.39
-1.27

Z
32.0

31.0
31.0
0.58
0.118
31.33
-0.04
-0.92





Data sorted by Laboratory Averag




Average

Tag

Lab
Average
Tag
Lab
Average Tag
Lab
13.67

X

PT

25.00

RC

27.67

QL
16.67

X

CM

25.33

RV

27.67

JG
17.33

X

BW

25.67

DZ

27.67

LA
19.67

X

QU

26.00

HU

27.67

CQ
23.67

Ji

QW

26.67

PM

28.00

GE
24.00

II

NO

26.67

DG

28.00

DL
• = No data submitted


TAG SYMBOLS


1T = Above control limit
0 = Insufficient data
^	

X
= Determined to be an outlier

= Below control limit
	-V
-------
(f	







	^
V
EMSL-LV Performance Evaluation: Blind-B,
19-Apr-1994

41/50
/
Cesium-134







*


Data sorted by Laboratory A vera $
(e


Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
28.00

AW
31.00

LT
32.67

AU
28.33

MQ
31.00

KX
32.67

AE
28.67

SC
31.00

DT
33.00

S
28.67

QZ
31.00

D
33.00

RZ
28.67

QJ
31.00

AI
33.00

MV
28.67

Q
31.33

Z
33.00

GQ
28.67

M
31.33

TU
33.00

EL
29.00

TS
31.33

TQ
33.00

CX
29.00

SM
31.33

QT
33.00

CO
29.00

NJ
31.33

N
33.00

BL
29.00

K
31.33

BN
33.33

TH
29.00

GI
31.33

AA
33.33

PP
29.00

DO
31.67

W
33.33

MP
29.33

SF
31.67

TL
33.33

FL
29.33

FU
31.67

TI
33.33

DM
29.67

UP
31.67

SW
33.33

BK
29.67

TE
31.67

RR
33.67

UN
29.67

QP
31.67

QX
33.67

UE
29.67

PI
31.67

JY
34.00

CJ
29.67

EB
31.67

J
34.33

VT
30.00

ST
31.67

HK
34.33

U
30.00

PW
31.67

E
34.33

NK
30.00

PB
32.00

LF
34.33

L
30.33

X
32.00

HL
34.33

AJ
30.33

WA
32.00

FZ
34.33

A
30.33

ss
32.00

DE
34.67

SD
30.33

KM
32.00

BM
35.00

UK
30.33

FE
32.00

BA
35.00

QK
30.33

DD
32.00

AF
35.00

MA
30.67

UY
32.33

T
35.00

CK
30.67

TD
32.33

RM
35.67

O
30.67

SZ
32.33

JS
35.67

AZ
30.67

PQ
32.33

I
36.00

UW
30.67

NH
32.33

FJ
36.33

P
30.67

JE
32.33

CP
36.33

IC
30.67

C
32.33

CE
36.33

EH
30.67

BH
32.33

CA
37.00

HP
30.67

BC
32.33

BO
37.33

SX
31.00

VO
32.33

AP
37.67

PC
31.00

VG
32.33

AK
40.67

AL
31.00

TA
32.67

SI
44.67
X
m
31.00

SR
32.67

RF
45.33
X
LR
31.00

PV
32.67

CS
50.67
X
BG
• = No data submitted

TAG SYMBOLS

It s
Above control limit
0 = Insufficient data

x = Determined to be an outlier

Below control limit
	-y
-------
42/50	EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Cesium-134
% responding labs Frequency distribution
10-		
	T	r
plillllh

4	-2	d'	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
—-f II ¦ihll.f ¦¦¦ r
2	0+2
-6	-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr*1994
43/50
Cesium-137	Statistical Summary	216 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 are 20.3 to 23.2 and 34.8 to 37.7
69(31.9 %) Failed to respond
32(61.1 %) Within all limits
8(3.7 %) Outliers .
1 (0.5 %) Out of control •*'

V
*--• 6(2.8 %) In warning zone
but not an outlier ^
I I I
but within control
Statistic
Respondents
Non-outliers
Mean
30.98
Grand Avg 31.17
Std. Dev.
4.29
2.40
Variance
18.41
5.76
% Coef. of Var.
13.85
7.70
% deviation of mean from known value
6.82
7.48
Norm. dev. of mean from known value
0.46
0.90
Median
31.00
31.00
% deviation of median from known value
6.9a
6.90
Norm. dev. of median from known value
0.47
0.83
9(6.1 %) More than 3 norm. S.D. •
6(4.1 %) Between 2 and
.84(57.1 %) Within 1 norm. S.D.
¦
o1 known value
48(32.7 %) Between 1 and 2 norm. S.D.
-------
((—	
44/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
	^
Cesium-137






-v
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
31.0
31.0
31.0
0.00
0.000
31.00
-0.06
0.69
AA
31.0
32.0
29.0
1.53
0.354
30.67
-0.17
0.58
AE
31.0
32.0
33.0
1.00
0.236
32.00
0.29
1.04
AF
33.0
29.0
34.0
2.65
0.591
32.00
0.29
1.04
AI
29.0
31.0
31.0
1.15
0.236
30.33
-0.29
0.46
AJ
35.0
34.0
35.0
0.58
0.118
34.67
1.21
1.96
AK
33.0
33.0
35.0
1.15
0.236
33.67
0.86
1.62
AL
35.0
31.0
29.0
3.06
0.709
31.67
0.17
0.92
AO







e^
AP
32.0
28.0
30.0
2.00
0.473
30.00
-0.41
0.35
AR








AU
34.0
33.0
33.0
0.58
0.118
33.33
0.75
1.50
AW
31.0
35.0
32.0
2.08
0.473
32.67
0.52
1.27
AZ
33.0
32.0
35.0,
1.53
0.354
33.33
0.75
1.50
BA
27.0
30.0
32.0
2.52
0.591
29.67
-0.52
0.23
BC
32.0
32.0
31.0
0.58
0.118
31.67
0.17
0.92
BG
29.0
39.0
28.0
6.08
1.570
32.00
0.29
1.04
BH
32.0
31.0
29.0
1.53
0.354
30.67
-0.17
0.58
BK
32.0
31.0
33.0
1.00
0.236
32.00
0.29
1.04
BL
31.0
30.0
30.0
0.58
0.118
30.33
-0.29
0.46
BM
32.0
32.0
32.0
0.00
0.000
32.00
0.29
1.04
BN
31.0
31.0
31.0
0.00
0.000
31.00
-0.06
0.69
BO
35.0
34.0
32.0
1.53
0.354
33.67
0.86
1.62
BS







•f '
BW
17.0
17.0
26.0,
5.20
1.120
20.00
-8.87
-3:12 X
C
30.0
30.0
29.0
0.58
0.118
29.67
-0.52
0.23
CA
31.0
32.0
31.0
0.58
0.118
31.33
0.06
0.81
CE
32.0
31.0
30.0
1.00
0.236
31.00
-0.06
0.69
CO








CJ
32.0
33.0
37.0
2.65
0.591
34.00
0.98
1.73
CK
35.0
33.0
33.0
1.15
0.236
33.67
0.86
1.62
CM
26.0
26.0
31.0
2.89
0.591
27.67
-1.21
-0.46
CO
29.0
31.0
35.0
3.06
0.709
31.67
0.17
0.92
CP
24.0
24.0
25.0
0.58
0.118
24.33
-2.37
-1.62
CQ
29.0
31.0
33.0
2.00
0.473
31.00
-0.06
0.69
CS
32.0
33.0
34.0
1.00
0.236
33.00
0.63
1.39
CX
33.0
31.0
34.0
1.53
0.354
32.67
0.52
1.27
D
32.0
30.0
29.0
1.53
0.354
30.33
-0.29
0.46
DB







#
DD
31.0
31.0
31.0
0.00
0.000
31.00
-0.06
0.69
DE
32.0
33.0
33.0
0.58
0.118
32.67
0.52
1.27
DG
32.0
29.0
29.0
1.73
0.354
30.00
-0.41
0.35
DI







•
DL
28.0
33.0
29.0
2.65
0.591
30.00
-0.41
0.35
DM
33.0
33.0
31.0
1.15
0.236
32.33
0.40
1.15
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
1 0 =
v-	
Insufficient data
x =
Determined to be an outlier
JJ s Below control limit
	0
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
	>
Normalized deviation
(grand-avg) (known) Tag
DO
34.0
27.0
28.0
3.79
0.827
29.67
-0.52
0.23

DS







¦< •
DT
37.0
33.0
30.0
3.51
0.827
33.33
0.75
1.50

DZ
26.0
28.0
26.0
1.15
0.236
26.67
-1.56
-0.81

E
32.0
32.0
30.0
1.15
0.236
31.33
0.06
0.81

EB
31.0
31.0
31.0
0.00
0.000
31.00
-0.06
0.69

EH
28.0
29.0
30.0
1.00
0.236
29.00
-0.75
0.00

EL
30.0
29.0
28.0'
1.00
0.236
^.00
-0.75
0.00

EO
*








EE








•
EV








• .
EX








•
FE
28.0
29.0
26.0
1.53
0.354
27.67
-1.21
-0.46

' FF








•
FJ
33.0
30.0
33.0
1.73
0.354
32.00
0.29
1.04

FL
32.0
32.0
33.0
0.58
0.118
32.33
0.40
1.15

FN







• ¦
FU
30.0
30.0
29.0
0.58
0.118
29.67
-0.52
0.23

FZ
33.0
32.0
33.0
0.58
0.118
32.67
0.52
1.27

GE
28.0
33.0
29.0
2.65
0.591
30.00
-0.41
0.35

GI
31.0
31.0
30.0
0.58
0.118
30.67
-0.17
0.58

GQ
32.0
32.0
32.0
0.00
0.000
32.00
0.29
1.04

GT








' ' ~
GZ








9
HH








•
HI
47.U
45.0
48.0
2.00
0.473
47.00
6.48
6.24
X
HK
32.0
33.0
32.0
0.58
0.118
32.33
0.40
1.15

HL
32.0
32.0
33.0
0.58
0.118
32.33
0.40
1.15

HP
35.0
39.0
37.0
2.00
0.473
37.00
2.02
2.77

HU
24.0
24.0
24.0
0.00
0.000
24.00
-2.48
-1.73

HX








• .
I
32.0
29.0
32.0
1.73
0.354
31.00
-0.06
0.69

IA
33.0
31.0
31.0
1.15
0.236
31.67
0.17
0.92

IC
31.0
34.0
31.0
1.73
0.354
32.00
0.29
1.04

ID








• '
IE








•
IU








• .
J
31.0
31.0
31.0
0.00
0.000
31.00
-0.06
0.69

JE
31.0
30.0
31.0
0.58
0.118
30.67
-0.17
0.58

JG
28.0
26.0
28.0
1.15
0.236
27.33
-1.33
-0.58

JH








- ~
JN








« /
JQ








' •-
JS
30.0
32.0
32.0
1.15
0.236
31.33
0.06
0.81

JY
33.0
34.0
33.0
0.58
0.118
33.33
0.75
1.50

• =
0 a
VN	
No data submitted
Insufficient data
X 5
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
= Below control limit
	
-------
f(	








	^
46/50
EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994


Cesium-137







-
Lab
Res. 1
Res. 2

Exper.
Rng anal

.Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
35.0
38.0
37.0
1.53
0.354
36.67
1.90
2.66

KE








•
KM
29.0
28.0
30.0
1.00
0.236
29.00
-0.75
0.00

KT








•
KX
29.0
31.0
31.0
1.15
0.236
30.33
-0.29
0.46

L
31.0
30.0
29.0
1.00
0.236
30.00
-0.41
0.35

LF
31.0
30.0
29.0
1.00
0.236
30.00
-0.41
0.35

LG








9
LL








9 '
LM








•
LR
28.0
32.0
30.0
2.00
0.473
30.00
-0.41
0.35

LT
32.0
32.0
32.0
0.00
0.000
32.00
0.29
1.04

M
29.0
30.0
30.0
0.58
0.118
29.67
-0.52
0.23

MA
35.0
35.0
33.0
1.15
0.236
34.33
1.10
1.85

MN









MO








'
MP
25.0
30.0
27.0
2.52
0.591
27.33
-1.33
-0.58

MQ
29.0
32.0
30.0
1.53
0.354
30.33
-0.29
0.46

MS









MV
32.0
32.0
33.0
0.58
0.118
32.33
0.40
1.15

MY








©
N
31.0
31.0
32.0
0.58
0.118
31.33
0.06
081

NA








O
NG








. o
NH
33.0
33.0
33.0
0.00
0.000
33.00
0.63
1.39

NI








. *
NJ
49.0
51.0
51.0
1.15
0.236
50.33
6.64
7.39
X
NK
31.0
31.0
29.0
1.15
0.236
30.33
-0.29
0.46

NO
16.0
14.0
15.0
0.58
0.118
14.67
-5.72
-4.97
X
NT








, •
O
34.0
34.0
34.0
0.00-
0.000
34.00
0.98
1.73

OF








•
OS








•
OX








'm
OY








•
P
41.0
43.0
44.0
1.53
0.354
42.67
3.98
4.73
X
PA








•
PB
31.0
32.0
29.0
1.53
0.354
30.67
-0.17
0.58

PC
35.0
37.0
39.0
2.00
0.473
37.00
2.02
2.77

PG








•
PI
31.0
29.0
30.0
1.00
0.236
30.00
-0.41
0.35

PM
32.0
29.0
28.0
2.08
0.473
29.67
-0.52
0.23

PP
28.0
31.0
30.0
1.53
0.354
29.67
-0.52
0.23

PQ
32.0
32.0
34.0
1.15
0.236
32.67
0.52
1.27

PR









• =
No data submitted

TAG SYMBOLS

1T = Above control limit
l0s
Insufficient data
x =
Determined to be an outlier
II = Below control limit
	-O
-------
ft	

EMSLrLV Performance Evaluation: Blind-B, 19-Apr-1994
	
47/50
Cesium-137







\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PT
14.0
16.0
14.0
1;15
0.236
14.67
-5:72*
4.97
¦;
-------
48 / 50	EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Cesium-137










Lab
Res. 1



Exper.
Rng anal

Normalized deviation


Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
TA
32.0

34.0
30.0 2.00
0.473
32.00
0.29
1.04

TD
36.0

32.0
33.0 2.08
0.473
33.67
0.86
1.62

TE
31.0

28.0
31.0 1.73
0.354
30.00
-0.41
0.35

TO










•
TH
33.0

33.0
34.0 0.58
0.118
33.33
0.75
1.50

TT
34.0

33.0
33.0 0.58
0.118
33.33
0.75
1.50

TL
20.0

20.0
25.0 2.89
0.591
21.67
-3.29
-2.54

TN










•
TQ
31.0

34.0
28.0 3.00
0.709
31.00
-0.06
0.69

TS
30.0

29.0
29.0 0.58
0.118
29.33
-0.64
0.12

TU
34.0

32.0
34.0 1.15
0.236
33.33
0.75
1.50

TY










•
U
33.0

33.0
34.0 0.58
0.118
33.33
0.75
1.50

UA










•
UE
32.0

33.0
34.0 1.00
0.236
33.00
0.63
1.39

UG











UK
41.0

40.0
40.0 0.58
0.118
40.33
3.17
3.93
IT
UN
36.0

34.0
36.0 1.15
0.236
35.33
1.44
2.19

UP
29.0

32.0
34.0 2.52
0.591
31.67
0.17
0.92

UQ










•
UW
31.0

32.0
30.0 1.00
0.236
31.00
-0.06
0.69

UY
32.0

28.0
29.0 2.08
0.473
29.67
-0.52
0.23

VA











vc










•
VG
32.0

28.0
30.0 2.00
0.473
30.00
-0.41
0.35

VI











VJ










•>
VM










•
VN










•
vo
33.0

31.0
30.0 1.53
0.354
31.33
0.06
0.81

VQ










• ,
VT
31.0

34.0
37.0 3.00
0.709
34.00
0.98
1.73

W
29.0

26.0
27.0 1.53
0.354
27.33
-1.33
-0.58

WA
31.0

31.0
31.0 0.00
0.000
31.00
-0.06
0.69

X
30.0

31.0
31.0 0.58
0.118
30.67
-0.17
0.58

Z
32.0

32.0
30.0 1.15
0.236
31.33
0.06
0.81





Data sorted by Laboratory Avera{
fe



Average

Tag

Lab
Average
Tag
Lab
Average

Tag
Lab
13.67

X

RF
24.00

HU
27.33


JG
14.67

X

PT
24.33

CP
27.67


S
14.67

X

NO
26.67

DZ
27.67


FE
18.00

X

QU
27.33

W
27.67


CM
20.00

X

BW
27.33

RM
28.00


QW
21.67



TL
27.33

MP
28.33


SR
• = No data submitted

TAG SYMBOLS

ft = Above control limit
0 2 Insufficient data

x = Determined to be an outlier
- Below control limit
	jj
-------
ft =
EM8L-LV Performance Evaluation:
Blind-B,
19-Apr-1994
¦a
49/50
'
Cesium-137






'


Data sorted by Laboratory Averaf
fe

Average
Tag
Lab
Average
Tag
Lab
Average Tae
Lab
29.00

QK
30.67


32.33
MV
29.00

Q
30.67

GI
32.33
HL
29.00

KM
30.67

BH
32.33
HK
29.00

EL
30.67

AA
32.33
FL
29.00

EH
31.00

WA
32.33
DM
29.33

TS
31.00

UW
32.67
SI
29.33

SM
31.00

TQ
32.67
PQ
29.33

SF
31.00

SC
32.67
FZ
29.33

RC
31.00

J
32.67
DE
29.67

UY
31.00

I
32.67
CX
29.67

RV
31.00

EB
32.67
AW
29.67

QT
31.00

DD
33.00
UE
29.67

PP
31.00

CQ
33.00
sw
29.67

PM
31.00

CE
33,00
NH
29.67

M
31.00

BN
33.00
CS
29.67

FU
31.00

A
33.33
U
29.67

DO
31.33

Z
33.33
TU
29.67

C
31.33

VO
33.33
TI
29.67

BA
31.33

RR
33.33
TH
30.00

VG
31.33

QL
33.33
JY
30.00

TE
31.33

PW
33.33
DT
30.00

ST
31.33

N
33.33
AZ
30.00

QZ
31.33

JS
33.33
AU
30.00

PI
31.33

E
33.67
TD
30.00

LR
31.33

CA
33.67
CK
30.00

LF
31.67

UP
33.67
BO
30.00

L
31.67

QJ
33.67
AK
30.00

GE
31.67

IA
34.00
VT
30.00

DL
31.67

CO
34.00
QX
30.00

DG
31.67

BC
34.00
O
30.00

AP
31.67

AL
34.00
CJ
30.33

RZ
32.00

TA
34.33
sx
30.33

PV
32.00

QP
34.33
MA
30.33

NK
32.00

LT
34.67
AJ
30.33

MQ
32.00

IC
35.33
UN
30.33

KX
32.00

GQ
35.33
SD
30.33

D
32.00

FJ
36.67
K
30.33

BL
32.00

BM
37.00
PC
30.33

AI
32.00

BK
37.00
HP
30.67

X
32.00

BG
40.33 It
UK
30.67

T
32.00

AF
42.67 x
P
30.67

SZ
32.00

AE
47.00 x
HI
30.67

PB
32.33

SS
50.33 x
NJ
• = No data submitted

TAG SYMBOLS

ft s Above control limit
0 = Insufficient data
v-	

x = Determined to be an outlier
li s Below control limit J
-------
50 / 50	EMSL-LV Performance Evaluation: Blind-B, 19-Apr-1994
Cesium-137
% responding labs	Frequency distribution
10-
¦lllill.ll
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
ilrt|l«iij_
j*	— — — m —
-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-94/194
Environmental Protection	Development	November 1994
Agency	Washington, DC 20460
Strontium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the July 15, 1994 Data
Library Use Only
PROPERTY OF
U.S. EPA
Las Vegas, NV 89119
-------
Strontium in Water
Performance Evaluation Study
July 15, 1994
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; July 15, 1994.
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.
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, 15-Jul-1994
1/13
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 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.
-------
2/13
EMSL-LV Performance Evaluation: Strontium in Water, 15-Jul-1994
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, 15-Jul-1994
3/13
Strontium-89
Statistical Summary
127 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
28(22.0 %) Failed to respond
1 (0.8 %) Outliers '
15(11.8 %) Out of control
but not an outlier
Statistic
. 73(57.5 %) Within all limits
Respondents
- 10(7.9 %) 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
28.60
6.51
42.39
22.77
-4.68
-0.22
28.67
-4.44
-0.20
Grand Avg 28.84
6.06
36.69
21.00
-3.85
-0.19
28.67
-4.44
-0.22
16(16.2 %) More than 3 norm. S.D
10(10.1 %) Between 2 and 3 norm. S.D."
,42(42.4 %) Within 1 norm. S.D.
of known value
31(31.3 %) Between 1 and 2 norm. S.D.
-------
S	 			
4/13 EMSL-LV Performance Evaluation: Strontium in Water, 15-Jul-1994
Strontium-89








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
30.0
31.0
27.0
2.08
0.473
29.33
0.17
-0.23

AE
25.0
24.0
28.0
2.08
0.473
25.67
-1.10
-1.50

AF
33.0
34.0
33.0
0.58
0.118
33.33
1.56
1.15

AJ
26.0
30.0
27.0
2.08
0.473
27.67
-0.41
-0.81

AK
26.0
24.0
24.0
1.15
0.236
24.67
-1.45
-1.85

AL
32.0
32.0
33.0
0.58
0.118
32.33
1.21
0.81

AU
33.0
35.0
37.0
2.00
0.473
35.00
2.13
1.73

AW
30.0
31.0
28.0
1.53
0.354
29.67
0.29
-0.12

AY









AZ
32.0
30.0
31.0
1.00
0.236
31.00
0.75
0.35

BA
27.0
29.0
27.0
1.15
0.236
27.67
-0.41
-0.81

BB








' •
BC
29.0
32.0
32.0
1.73
0.354
di.UU
U.7D
0.35

BG
14.0
18.0
17.0
2.08
0.473
16.33
-4.33
-4.73

BH
35.0
35.0
35.0
0.00
0.000
35.00
2.13
1.73

BL
26.0
28.0
30.0
2.00
0.473
28.00
-0.29
-0.69

BM
30.0
29.0
31.0
1.00
0.236
30.00
0.40
0.00'

BO
35.0
31.0
34.0
2.08
0.473
33.33
1.56
1.15

C
27.0
28.0
29.0
1.00
0.236
28.00
-0.29
-0.69

CA
27.0
24.0
27.0
1.73
0.354
26.00
-0.99
-1.39

CE








•
CG
25.0
27.0
29.0
2.00
0.473
27.00
-0.64
-1.04

CJ
25.0
25.0
28.0
1.73
0.354
26.00
-0.99
-1.39

CK
31.0
30.0
30.0
0.58
0.118
30.33
0.52
0.12

CO
34.0
35.0
14.0
11.85
3.821
27.67
-0.41
-0.81

CQ
21.0
21.0
20.0
0.58
0.118
20.67
-2.83
-3.23

CS
38.0
38.0
39.0
0.58
0.118
38.33
3.29
2.89

CX
35.0
27.0
31.0
4.00
0.945
31.00
0.75
0.35

D
24.0
26.0
27.0
1.53
0.354
25.67
-1.10
-1.50

DD
27.0
29.0
29.0
1.15
0.236
28.33
-0.18
-0.58

DE
26.0
26.0
27.0
0.58
0.118
26.33
-0.87
-1.27

DG
47.0
36.0
45.0
5.86
1.570
42.67
4.79
4.39
IT
DO
32.0
33.0
29.0
2.08
0.473
31.33
0.86
0.46

DT
29.0
32.0
31.0
1.53
0.354
30.67
0.63
0.23

DZ
38.0
39.0
35.0
2.08
0.473
37.33
2.94
2.54

E
27.0
25.0
28.0
1.53
0.354
26.67
-0.75
-1.15

EB
34.0
35.0
39.0
2.65
0.591
36.00
2.48
2.08

EH
32.0
30.0
27.0
2.52
0.591
29.67
0.29
-0.12

EL
38.0
37.0
36.0
1.00
0.236
37.00
2.83
2.42

FE
35.0
34.0
36.0
1.00
0.236
35.00
2.13
1.73

FU
34.0
34.0
30.0
2.31
0.473
32.67
1.32
0.92

GG









HK
29.0
27.0
28.0
1.00
0.236
28.00
-0.29
-0.69

HP
31.0
33.0
32.0
1.00
0.236
32.00
1.09
0.69

HU









• =
No data submitted

TAG SYMBOLS

1! s Above control limit
in
Q
Insufficient data
x =
Determined to be an outlier
U = Below control limit
	V
-------
	——o
EMSLrLV Performance Evaluation: Strontium in Water, 15-Jul-1994 5/13
Strontium-89







-N
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
I
190
24.0
28.0
4.51
1120
23.67
-1-79
-2.19

IA





w ^


•
IC
31.0
31.0
26.0
2.89
0.591
29.33
0.17
-0.23

J
25.0
28.0
27.0
1.53
0.354
26.67
-0.75
-1.15

JE
47.0
37.0
48.0
6.08
1.570
44.00
5.25
4.85
It
JS
29.0
25.0
25.0
2.31
0.473
26.33
-0.87
-1.27

JY
22.0
19.0
19.0
1.73
0.354
20.00
-3.06
-3.46
li
K
32.0
32.0
32.0
0.00
0.000
32.00
1.09
0.69

KH
31.0
31.0
31.0
0.00
0.000
31.00
0.75
0.35

KL
25.0
26.0
29.0
2.08
0.473
26.67
-0.75
-1.15

KX
31.0
40.0
25.0
7.55
2.470
32.00
1.09
0.69

L
32.0
34.0
38.0
3.06
0.709
34.67
2.02
1.62

' 1M









LS









LT
42.0
45.0
40.0
2.52
0.591
42.33
4.67
4.27
tr
M
M*rr
35.0
35.0
36.0
0.58
0.118	
35.33
2.25
'iy 'v V * . •
J.85

MQ
3L0
21.0
28.0
2.08
0.473
_ 28.67
-0.06
-046



r'isP

^ %' ' ? «' r ' '


>*' 'V ^ '>V»

N
28.0
_ 27.0
28.0
0.58
0.118
27.67
-0.41
-0.81


--'yv'

j
»» ; -
7 "Y
y-v.wsww«-


NJ
19.0
18.0
16.0
1.53
0.354
17.67
-3.87
-4.27
i
NT
27.0
28.0
29.0
1.00
0.236
28.00
-0.29
-0.69

OA
31.0
34.0
31.0
1.73
0.354
32.00
1.09
0.69

OL
28.0
28.0
27.0
0.58
0.118
27.67
-0.41
-0.81

PB
30.0
30.0
30.0
0.00
0.000
30.00
0.40
0.00

PC
260
24.0
25.0
LOO
0.236
25.00
-1.33
-1.73

PP
• . i
' '



' < r 0 '5

^ L '
"1- Tr
PT
43.0
4L0
44.0
1.53
0.354
42.67
. 4.79	
4.39
tr
PU






"> . ' V
7,;"v. ¦£

PV
37.0
39.0
39.0
1.15
0.236
38.33
3.29~
2.89

Q
31.0
33.0
29.0
2.00
0.473	
31.00
0.75
0.35

QJ

^
. v.
-v .

'Wi - '¦?,*v-¦

QK
32(L
35.0
33.0
1.53
0.354
33.33
1.56
1.15

QL

" - ' ' ' -V ' •
..





#'
QM
29.0
28.0
24.0
2.65
0.591
27.00
-0.64
-1.04

QU
23.0
26.0
24.0
1.53
0.354
24.33
-1.56
-1.96

QW
25.0
22.0
22.0
1.73
0.354
2300
:202
-2.42

QX








•
QZ
31.0
29.0
30.0
1.00
0.236
30.00
0.40
0.00

R
34.0
29.0
29.0
2.89
0.591
30.67
0.63
0.23

RC
4.0
4.0
5.0
0.58
0.118
4.33
-8.49
-8.89
X
RP
, '





; >


RM
24.0
25.0
26.0
1.00
0.236
25.00
-1.33
-1.73

RR
27.0
26.0
26.0
0.58
0.118
26.33
-0.87
-1.27

• S No data submitted	TAG SYMBOLS	It — Above control limit
0 = Insufficient data x = Determined to be an outlier	Ji = Below control limit.
v			'J
-------
(, 	
6/13 EMSL-LV Performance
Evaluation: Strontium in Water, 15-Jul-1994
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RV
30.0
24.0
29.0
3.21
0.709
27.67
-0.41
-0.81

S
31.0
30.0
30.0
0.58
0.118
30.33
0.52
0.12

sc
37.0
39.0
35.0
2.00
0.473
37.00
2.83
2.42

SD
15.0
16.0
16.0
0.58
0.118
15.67
-4.56
-4.97
li
SF
21.0
31.0
28.0
5.13
1.345
26.67
-0.75
-1.15

SI
19.0
20.0
21.0
1.00
0.236
20.00
-3.06
-3.46

SM
21.0
25.0
24.0
2.08
0.473
23.33
-1.91
-2.31

ss
32.0
34.0
33.0
1.00
0.236
33.00
1.44
1.04

ST
29.0
34.0
31.0
2.52
0.591
31.33
0.86
0.46

sz








' •
T
27.0
28.0
27.0
0.58
0.118
27.33
-0.52
-0.92

TA








•
TD
18.0
24.0
24.0
3.46
0.709
22.00
-2.37
-2.77

TH








•.
TI
26.0
26.0
24.0
1.15
0.236
25.33
-1.22
-1.62

TL
35.0
31.0
29.0
3.06
0.709
31.67
0.98
0.58

TP









TQ
29.0
29.0
28.0
0.58
0.118
28.67
-0.06
-0.46

TS








•
TV








•
U
25.0
24.0
25.0
0.58
0.118
24.67
-1.46
-1.85

UE
23.0
19.0
20.0
2.08
0.473
20.67
-2.83
-3.23

UL
18.0
20.0
17.0
1.53
0.354
18.33
-3.64
-4.04

UN
13.0
10.0
8.0
2.52
0.591
10.33
-6.41
-6.81

UP
19.0
18.0
15.0
2.08
0.473
17.33
-3.99
-4.39
u
uw
35.0
36.0
34.0
1.00
0.236
35.00
2.13
1.73

vc








9
VG
15.0
15.0
16.0
0.58
0.118
15.33
-4.68
-5.08
J
VL
37.0
33.0
330
2.31
0.473
34.33
1.90
1.50

VN








•
VQ








•
VU








•:
VY
26.0
25.0
25.0
0.58
0.118
25.33
-1.22
-1.62

W
28.0
30.0
28.0
1.15
0.236
28.67
-0.06
-0.46

X
26.0
28.0
30.0
2.00
0.473
28.00
-0.29
-0.69

Y








•
Z
32.0
32.0
32.0
0.00
0.000
32.00
1.09
0.69

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
4.33
X
RC
17.33
U
UP
20.67

UE
10.33

UN
17.67
u
NJ
20.67

CQ
15.33
li
VG
18.33
u
UL
22.00

TD
15.67

SD
20.00
Ji
SI
23.00

QW
16.33
u
BG
20.00
u
JY
23.33

SM

• 5 No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1T s Above control limit
ii = Below control limit
-------
EMSL-LV Performance Evaluation: Strontium in Water, 15-Jul-1994
7/13
Strontium-89
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
23.67

I
28.00

X
32.00

Z
24.33

QU
28.00

NT
32.00

OA
24.67

U
28.00

HK
32.00

KX
24.67

AK
28.00

C
32.00

K
25.00

RM
28.00

BL
32.00

HP
25.00

PC
28.33

DD
32.33

AL
25.33

VY
28.67

W
32.67

FU
25.33

TI
28.67

TQ
33.00

ss
25.67

D
28.67

MQ
33.33

QK
25.67

AE
29.33

IC
33.33

BO
26.00

CJ
29.33

A
33.33

AF
26.00

CA
29.67

EH
34.33

VL
26.33

RR
29.67

AW
34.67

L
26.33

JS
30.00

QZ
35.00

UW
26.33

DE
30.00

PB
35.00

FE
26.67

SF
30.00

BM
35.00

BH
26.67

KL
30.33

S
35.00

AU
26.67

J
30.33

CK
35.33

M
26.67

E
30.67

R
36.00

EB
27.00

QM
30.67

DT
37.00

sc
27.00

CG
31.00

Q
37.00

EL
27.33

T
31.00

KH
37.33

DZ
27.67

RV
31.00

CX
38.33

PV
27.67

OL
31.00

BC
38.33

cs
27.67

N
31.00

AZ
42.33
IT
LT
27.67

CO
31.33

ST
42.67
It
PT
27.67

BA
31.33

DO
42.67
IT
DG
27.67

AJ
31.67

TL
44.00
ft
JE
% responding labs
Frequency distribution
n.lTll.if illT. -tt
¦r-
-6

jmM.
-2	0	+2
Normalized deviation of the mean from the known value
responding labs	Frequency distribution

-6	-4	-2	0	+2	- +4	+6
Normalized deviation of the mean from the grand average
• s No data submitted	TAG SYMBOLS	1T s Above control limit
0 = Insufficient data	x s Determined to be an outlier	U a Below control limit
-------
EMSL-LV Performance Evaluation: Strontium in Water, 15-Jul-1994
8/13
Strontium-90
Statistical Summary
127 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
23(18.1 %) Failed to respond
2( 1.6 %) Out of control *
but not an outlier
Statistic
97(76.4 %) Within all limits
Respondents
** 5(3.9 %) 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
18.80
2.80
7.83
14.89
-6.01
-0.43
18.83
-5.83
-0.42
Grand Avg 18.80
2.80
7.83
14.89
-6.01
-0.43
18.83
-5.83
-0.42
-------
9/13 EMSL-LV Performance Evaluation: Strontium in Water, 15-Jul-1994
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
19.0
20.0
20.0
0.58
0.118
19.67
0.30
-0.12
AE
17.0
17.0
17.0
0.00
0.000
17.00
-0.62
©
t
AF
18.0
18.0
18.0
0.00
0.000
18.00
-0.28
-0.69
AJ
16.0
16.0
19.0
1.73
0.354
17.00
-0.62
-1.04
AK
20.0
18.0
19.0
1.00
0.236
19.00
0.07
-0.35
AL
19.0
19.0
17.0
1.15
0.236
18.33
-0.16
-0.58
AU
20.0
20.0
21.0
0.58
0.118
20.33
0.53
0.12
AW
19.0
20.0
20.0
0.58
0.118
19.67
0.30
-0.12
AY
18.0
17.0
17.0
0.58
0.118
17.33
-0.51
-0.92
AZ
21.0
19.0
19.0
1.15
0.236
19.67
0.30
-0.12
BA
21.0
18.0
17.0
2.08
0.473
18.67
-0.05
-0.46
BB
19.0
20.0
21.0
1.00
0.236
20.00
0.42
0.00
BC
21.0
20.0
18.0
1.53
0.354
19.67
0.30
-0.12
BG
14.0
18.0
17.0
2.08
0.473
16.33
-0.85
-1.27
BH
19.0
20.0
20.0
0.58
0.118
19.67
0.30
-0.12
BL
20.0
19.0
16.0
2.08
0.473
18.33
-0.16
-0.58
BM
16.0
16.0
19.0
1.73
0.354
17.00
-0.62
-1.04
BO
15.0
16.0
17.0
1.00
0.236
16.00
-0.97
-1.39
C
18.0
19.0
18.0
0.58
0.118
18.33
-0.16
-0.58
CA
19.0
19.0
18.0
0.58
0.118
18.67
-0.05
-0.46
CE
18.0
18.0
19.0
0.58
0.118
18.33
-0.16
-0.58
CG
23.0
23.0
23.0
0.00
0.000
23.00
1.46
1.04
CJ
19.0
19.0
19.0
0.00
0.000
19.00
0.07
-0.35
CK
22.0
23.0
23.0
0.58
0.118
22.67
1.34
0.92
CO
14.0
14.0
21.0
4.04
0.827
16.33
-0.85
-1.27
CQ
16.0
16.0
16.0
0.00
0.000
16.00
-0.97
-1.39
CS
19.0
19.0
19.0
0.00
0.000
19.00
0.07
-0.35
CX
18.0
21.0
20.0
1.53
0.354
19.67
0.30
-0.12
D
17.0
18.0
18.0
0.58
0.118
17.67
-0.39
-0.81
DD
18.0
17.0
17.0
0.58
0.118
17.33
-0.51
-0.92
DE
20.0
21.0
21.0
0.58
0.118
20.67
0.65
0.23
DG
10.0
14.0
9.0
2.65
0.591
11.00
-2.70
-3.12 U
DO
18.0
17.0
21.0
2.08
0.473
18.67
-0.05
-0.46
DT
18.0
17.0
16.0
1.00
0.236
17.00
-0.62
-1.04
DZ
24.0
25.0
23.0
1.00
0.236
24.00
1.80
1.39
E
21.0
21.0
21.0
0.00
0.000
21.00
0.76
0.35
EB
15.0
16.0
19.0
2.08
0.473
16.67
-0.74
-1.15
EH
18.0
19.0
17.0
1.00
0.236
18.00
-0.28
-0.69
EL
20.0
20.0
19.0
0.58
0.118
19.67
0.30
-0.12
FE
21.0
19.0
19.0
1.15
0.236
19.67
0.30
-0.12
FU
19.0
19.0
20.0
0.58
0.118
19.33
0.19
-0.23
GG







•
HK
18.0
18.0
18.0
0.00
0.000
18.00
-0.28
-0.69
HP
13.0
13.0
12.0
0.58
0.118
12.67
-2.12
-2.54
HU








• =
0 3
^	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
JJ> = Below control limit
	'J
-------
6
v.
EMSL-LV Performance Evaluation
Strontium in Water, 15-Jul-1994
	^
10/13
Strontium-90







'
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
I
29.0
26.0
25.0
2.08
0.473
26.67
2.73
2.31

IA








•
IC
16.0
17.0
19.0
1.53
0.354
17.33
-0.51
-0.92

J
23.0
22.0
22.0
0.58
0.118
22.33
1.22
0.81

JE
16.0
21.0
15.0
3.21
0.709
17.33
-0.51
-0.92

JS
19.0
19.0
22.0
1.73
0.354
20.00
0.42
0.00

JY
21.0
18.0
16.0
2.52
0.591
18.33
-0.16
-0.58

K
18.0
18.0
18.0
0.00
0.000
18.00
-0.28
-0.69

KH
20.0
20.0
18.0
1.15
0.236
19.33
0.19
-0.23

KL
24.0
21.0
20.0
2.08
0.473
21.67
0.99
0.58

KX
18.0
15.0
21.0
3.00
0.709
18.00
-0.28
-0.69

L
19.0
17.0
17.0
1.15
0.236
17.67
-0.39
-0.81

LM









LS









LT
18.0
17.0
18.0
0.58
0.118
17.67
-0.39
-0.81

M
18.0
18.0
19.0
0.58
0.118
18.33
-0.16
-0.58

MN








•
MQ
18.0
21.0
20.0
1.53
0.354
19.67
0.30
-0.12

MS









N
19.0
19.0
19.0
0.00
0.000
19.00
0.07
-0.35

NB









NJ
24.0
27.0
32.0
4.04
0.945
27.67
3.07
2.66

NT
19.0
19.0
19.0
0.00
0.000
19.00
0.07
-0.35

OA
17.0
18.0
18.0
0.58
0.118
17.67
-0.39
-0.81

OL
19.0
20.0
17.0
1.53
0.354
18.67
-0.05
-0.46

PB
20.0
20.0
20.0
0.00
0.000
20.00
0.42
0.00

PC
19.0
18.0
18.0
0.58
0.118
18.33
-0.16
-0.58

PP









PT
17.0
17.0
16.0
0.58
0.118
16.67
-0.74
-1.15

PU








•-
PV
22.0
21.0
23.0
1.00
0.236
22.00
1.11
0.69

Q
20.0
19.0
21.0
1.00
0.236
20.00
0.42
0.00

QJ
18.0
23.0
20.0
2.52
0.591
20.33
0.53
0.12

QK
20.0
19.0
20.0
0.58
0.118
19.67
0.30
-0.12

QL








'*
QM
20.0
19.0
19.0
0.58
0.118
19.33
0.19
-0.23

QU
15.0
17.0
15.0
1.15
0.236
15.67
-1.08
-1.50

QW
16.0
17.0
15.0
1.00
0.236
16.00
-0.97
-1.39

QX








•
QZ
16.0
15.0
16.0
0.58
0.118
15.67
-1.08
-1.50

R
21.0
19.0
20.0
1.00
0.236
20.00
0.42
0.00

RC
15.0
15.0
14.0
0.58
0.118
14.67
-1.43
-1.85

RF








•
RM
23.0
21.0
19.0
2.00
0.473
21.00
0.76
0.35

RR
19.0
20.0
21.0
1.00
0.236
20.00
0.42
0.00

• =
No data submitted

TAG SYMBOLS

ft a Above control limit
0 =
V-	
Insufficient data
x =
Determined to be an outlier
U a Below control limit
	'J
-------
f		
11/13 EMSL-LV Performance Evaluation: Strontium in Water, 15-Jul-1994
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
.Normalized deviation
(grand-avg) (known) Tag
RV
20.0
22.0
21.0
1.00
0.236
21.00
0.76
0.35

S
19.0
19.0
20.0
0.58
0.118
19.33
0.19
-0.23

sc
20.0
17.0
18.0
1.53
0.354
18.33
-0.16
-0.58

SD
20.0
21.0
23.0
1.53
0.354
21.33
0.88
0.46

SF
17.0
16.0
15.0
1.00
0.236
16.00
-0.97
-1.39

SI
20.0
20.0
21.0
0.58
0.118
20.33
0.53
0.12

SM
13.0
13.0
14.0
0.58
0.118
13.33
-1.89
-2.31

SS
19.0
19.0
19.0
0.00
0.000
19.00
0.07
-0.35

ST
24.0
25.0
24.0
0.58
0.118
24.33
1.92
1.50

SZ
17.0
16.0
18.0
1.00
0.236
17.00
-0.62
-1.04

T
20.0
18.0
18.0
1.15
0.236
18.67
-0.05
-0.46

TA








. •
TD
21.0
18.0
16.0
2.52
0.591
18.33
0.16
-0.58

TH









TI
15.0
16.0
17.0
1.00
0.236
16.00
-0.97
-1.39

TL
21.0
21 0
20.0
0.58
0.118
20.67
0.65
0.23

TP









TQ
18.0
18.0
18.0
0.00
0.000
18.00
-0.28
-0.69

TS








•j
TV








¦ :
U
22.0
22.0
21.0
0.58
0.118
21.67
0.99
0.58

UE
20.0
21.0
19.0
1.00
0.236
20.00
0.42
0.00

UL
25.0
26.0
25.0
0.58
0.118
25.33
2.26
1.85

UN
9.0
11.0
10.0
1.00
0.236
10.00
-3.05
-3.46
JJ.
UP
22.0
25.0
23.0
1.53
0.354
23.33
1.57
1.15

uw
19.0
19.0
19.0
0.00
0.000
19.00
0.07
-0.35

vc









VG
12.0
12.0
11.0
0.58
0.118
11.67
-2.47
-2.89

VL
23.0
23.0
22.0
0.58
0.118
22.67
1.34
0.92

VN








#»/
VQ









VU








UZ',
VY
19.0
19.0
19.0
0.00
0.000
19.00
0.07
-0.35

W
18.0
17.0
18.0
0.58
0.118
17.67
-0.39
-0.81

X
15.0
16.0
15.0
0.58
0.118
15.33
-1.20
-1.62

Y








O
Z
20.0
21.0
19.0
1.00
0.236
20.00
0.42
0.00

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average Tag Lab
10.00
U
UN
14.67
RC
16.00 SF
11.00
li
DG
15.33
X
16.00 QW
11.67

VG
15.67
QZ
16.00 CQ
12.67

HP
15.67
QU
16.00 BO
13.33

SM
16.00
TI
16.33 CO
• = No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
II = Below control limit
-------
(f=-
EMSL-LV Performance Evaluation: Strontium in Water, 15-JuI-1994 12/13
Strontium-90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
16.33

BG
18.33

C
20.00

Z
16.67

PT
18.33

BL
20.00

UE
16.67

EB
18.33

AL
20.00

RR
17.00

SZ
18.67

T
20.00

R
17.00

DT
18.67

OL
20.00

Q
17.00

BM
18.67

DO
20.00

PB
17.00

AJ
18.67

CA
20.00

JS
17.00

AE
18.67

BA
20.00

BB
17.33

JE
19.00

VY
20.33

SI
17.33

IC
19.00

UW
20.33

QJ
17.33

DD
19.00

SS
20.33

AU
17.33

AY
19.00

NT
20.67

TL
17.67

W
19.00

N
20.67

DE
17.67

OA
19.00

CS
21.00

RV
17.67

LT
19.00

CJ
21.00

RM
17.67

L
19.00

AK
21.00

E
17.67

D
19.33

S
21.33

SD
18.00

TQ
19.33

QM
21.67

U
18.00

KX
19.33

KH
21.67

KL
18.00

K
19.33

FU
22.00

FV
18.00

HK
19.67

QK
22.33

J
18.00

EH
19.67

MQ
22.67

VL
18.00

AF
19.67

FE
22.67

CK
18.33

TD
19.67

EL
23.00

CG
18.33

SC
19.67

CX
23.33

UP
18.33

PC
19.67

BH
24.00

DZ
18.33

M
19.67

BC
24.33

ST
18.33

JY
19.67

AZ
25.33

UL
18.33

CE
19.67
19.67

AW
A
26.67
27.67

I
NJ
% responding labs
Frequency distribution
10-
JBI

-2	0+2+4
Normalized'deviation of the mean from the known value
-r-
+6
• = No data submitted	TAG SYMBOLS	IT 3 Above control limit
0 = Insufficient data	x s Determined to be an outlier	11 s R*>low control limit
-------
ft	¦
13/13
EMSL-LV Performance Evaluation: Strontium in Water, 15-Jul-1994
Stronti um-90
% responding labs		Frequency distribution
ij]
10-

-4-2	0	+2+4+6
Normalized deviation of the mean from the grand average
-------
United States	Office of Research and	EPA/600/R-94/212
Environmental Protection	Development	December 1994
Agency	Washington, DC 20460
4»EPA Air Filter Performance
Evaluation Study
A Statistical Evaluation of
the August 26,1994 Data
PROPERTY OF
U.S. EPA Library
Las Vegas, NV 89119
REC£!/E-
	!
DEC 1 I 1991 I
EMSL LV LIBRARY
0014rsd94.121a
-------
Air Filter
Performance Evaluation Study
August 26, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
\s
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 Air Filter; August 26, 1994.
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: Air Filter, 26-Aug-1994	1/33
1
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.
-------
2/33
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
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 tht 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: Air Filter, 26-Aug-1994
3/33
Alpha
Statistical Summary
214 Participants
The known value of this nuclide is 35.0 pCi/F with an expected precision of 9.0; the control limits
are 19.4 to 50.6; the warning regions are 19.4 to 24.6 and 45.4 to 50.6
50(23.4 %) Failed to respond \
, 138(64.5 %) Within all limits
6(2.8 %) Outliers •' /
	

10(4.7 %) Out of control *

10(4.7 %) In warning zone
but not an outlier
I
I
but within control
Statistic
Respondents
Non-outliers
Mean
39.50
Grand Avg 36.89
Std. Dev.
17.30
6.62
Variance
299.45
43.78
% Coef. of Var.
43.81
17.94
% deviation of mean from known value
12.85
5.40
Norm. dev. of mean from known value
0.26
0.29
Median
36.00
36.00
% deviation of median from known value
2.86
2.86
Norm. dev. of median from known value
0.06
0.15
16(9.8 %) More than 3 norm. S.D.
10(6.1 %) Between 2 and 3 norm. S.D. *
, 107(65.2 %) Within 1 norm. S.D.
of known value
31(18.9 %) Between 1 and 2 norm. S.D.
-------
r,	








	^
4/33
\

EMSL-LV Performance Evaluations Air Filter, 26-Aug-1994


/
Alpha








.		
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
42.0
40.0
38.0
2.00
0.263
40.00
0.60
0.96

AA
33.0
34.0
33.0
0.58
0.066
33.33
-0.68
-0.32

AE
56.0
51.0
52.0
2.65
0.328
53.00
3.10
3.46
It
AF
38.0
32.0
39.0
3.79
0.459
36.33
-0.11
0.26

AI








•
AJ
34.0
30.0
34.0
2.31
0.263
32.67
-0.81
-0.45

AK
36.0
35.0
36.0
0.58
0.066
35.67
-0.24
0.13

AL
24.0
27.0
23.0
2.08
0.263
24.67
-2.35
-1.99

AN
46.0
47.0
44.0
1.53
0.197
45.33
1.62
1.99

AP
31.0
32.0
32.0
0.58
0.066
31.67
-1.01
-0.64

AU
38.0
42.0
39.0
2.08
0.263
39.67
0.53
0.90

AZ
37.0
29.0
36.0
4.36
0.525
34.00
-0.56
-0.19

BA
37.0
35.0
39.0
2.00
0.263
37.00
0.02
0.38

BC
34.0
39.0
35.0
2.65
0.328
36.00
-0.17
0.19

BG
37.0
38.0
40.0
3.53
0.197
38.33
0.28
0.64

BH
35.0
34.0
37.0
1 53
0.197
35.33
-0.30
0.06

BI
44.0
41.0
41.0
1.73
0.197
42.00
0.98
1.35

BK
34.0
35.0
37.0
1.53
0.197
35.33
-0.30
0.06

BL
31.0
32.0
31.0
0.58
0.066
31.33
-1.07
-0.71

BM
38.0
35.0
39.0
2.08
0.263
37.33
0.09
0.45

BO
31.0
30.0
29.0
1.00
0.131
30.00
-1.33
-0.96

BW








• ^
C
33.0
30.0
37.0
3.51
0.459
33.33
-0.68
-0.32

CA
30.0
30.0
28.0
1.15
0.131
29.33
-1.45
-1.09

CC
31.0
30.0
33.0
1.53
0.197
31.33
-1.07
-0.71

CE
37.0
34.0
34.0
1.73
0.197
35.00
-0.36
0.00

CJ
32.0
33.0
29.0
2.08
0.263
31.33
-1.07
-0.71

CM
51.0
48.0
55.0
3.51
0.459
51.33
2.78
3.14
IT
CO
43.0
38.0
40.0
2.52
0.328
40.33
0.66
1.03

CP
38.0
38.0
40.0
1.15
0.131
38.67
0.34
0.71

CQ
37.0
38.0
42.0
2.65
0.328
39.00
0.41
0.77

CS








•
CX
53.0
50.0
51.0
1.53
0.197
51.33
2.78
3.14
ft
D
36.0
40.0
28.0
6.11
0.788
34.67
-0.43
-0.06

DD
36.0
35.0
35.0
0.58
0.066
35.33
-0.30
0.06

DE
34.0
34.0
34.0
0.00
0.000
34.00
-0.56
-0.19

DG
36.0
38.0
35.0
1.53
0.197
36.33
-0.11
0.26

DH
42.0
41.0
40.0
1.00
0.131
41.00
0.79
1.15

DI
32.0
34.0
35.0
1.53
0.197
33.67
-0.62
-0.26

DJ
67.0
60.0
69.0
4.73
0.591
66.33
5.47
5.84
X
DL








•
DM








•
DO
43.0
35.0
41.0
4.16
0.525
39.67
0.53
0.90

DP








•
DT
33.0
33.0
33.0
0.00
0.000
33.00
-0.75
-0.38

• s No data submitted

TAG SYMBOLS

IT & Above control limit
0 s Insufficient data
Vfc.	
X s
Determined to be an outlier
11 = Below control limit
'J
-------
ft	

EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
.N
5/33
Alpha









Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DX








•
E
33.0
31.0
32.0
1.00
0.131
32.00
-0.94
-0.58

EA








•
EB
30.0
31.0
31.0
0.58
0.066
30.67
-1.20
-0.83

EF
30.0
30.0
33.0
1.73
0.197
31.00
-1.13
-0.77

EH
37.0
37.0
35.0
1.15
0.131
36.33
-0.11
0.26

EL
39.0
36.0
36.0
1.73
0.197
37.00
0.02
0.38

EW








•
EX









EZ
30.0
31.0
31.0
0.58
0.066
30.67
-1.20
-0.83

FE
35.0
35.0
37.0
1.15
0.131
35.67
-0.24
0.13

FJ
52.0
56.0
48.0
4.00
0.525
52.00
2.91
3.27
ir
FK









FL
37.0
36.0
35.0
1.00
0.131
36.00
-0.17
0.19

FO
41.0
41.0
46.0
2.89
0.328
42.67
1.11
1.48

FZ
27.0
29.0
28.0
1.00
0.131
28.00
-1.71
-1.35

GE








•
GI
49.0
50.0
53.0
2.08
0.263
50.67
2.65
3.02
IT
GQ
41.0
42.0
43.0
1.00
0.131
42.00
0.98
1.35

HE
35.0
37.0
35.0
1.15
0.131
35.67
-0.24
0.13

HI
47.0
50.0
46.0
2.08
0.263
47.67
2.07
2.44

HL
56.0
52.0
57.0
2.65
0.328
55.00
3.49
3.85
ft
HP
126.0
140.0
149.0
11.69
L970
138 33
19.62
19.89
X
HU
75.0
79.0
86.0
5.57
0;722
80.00
8;30
8,66
X
HX








•
I
37.0
36.0
37.0
0.58
0.066
36.67
-0.04
0.32

IA








•
IC
36.0
42.0
40.0
3.06
0.394
39.33
0.47
0.83

IE
TT
31.0
32.0
28.0
2.08
0.263
30.33
-1.26
-0.90

u
ru








m
-
IY
38.0
39.0
42.0
2.08
0.263
39.67
0.53
0.90

j
35.0
34.0
34.0
0.58
0.066
34.33
-0.49
-0.13

JE
49.0
50.0
49.0
0.58
0.066
49.33
2.39
2.76

JI
28.0
29.0
31.0
1.53
0.197
29.33
-1.45
-1.09

JS
41.0
42.0
38.0
2.08
0.263
40.33
0.66
1.03

JY
35.0
35.0
34.0
0.58
0.066
34.67
-0.43
-0.06

K
39.0
34.0
35.0
2.65
0.328
36.00
-0.17
0.19

KF








• .
KH
30.0
29.0
31.0
1.00
0.131
30.00
-1.33
-0.96

KL
36.0
38.0
37.0
1.00
0.131
37.00
0.02
0.38

KM








•
KX
38.0
40.0
40.0
1.15
0.131
39.33
0.47
0.83

L
32.0
34.0
31.0
1.53
0.197
32.33
-0.88
-0.51

LA








• -
• s No data submitted

TAG SYMBOLS

ft a Above control limit
0 = Insufficient data
X 3
Determined to be an outlier
•li s Below control limit
-------
ft	—
6/33
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
Alpha








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LE
42.0
44.0
41.0
1.53
0.197
42.33
1.05
1.41

LF
38.0
39.0
39.0
0.58
0.066
38.67
0.34
0.71

LM








•
LR
57.0
54.0
57.0
1.73
0.197
56.00
3.68
4.04
It
LS
81.0
70.0
81.0
6.35
0.722
77.33
7.78
8.15
¦X.
LT
37.0
35.0
37.0
1.15
0.131
36.33
-0.11
0.26

LZ
34.0
36.0
39.0
2.52
0.328
36.33
-0.11
0.26

M
33.0
33.0
34.0
0.58
0.066
33.33
-0.68
-0.32

MA
38.0
43.0
41.0
2.52
0.328
40.67
0.73
1.09

ML
40.0
47.0
42.0
3.61
0.459
43.00
1.18
1.54

MN








0.
MP








o
MQ
31.0
34.0
32.0
1.53
0.197
32.33
-0.88
-0.51

MV
30.0
29.0
26.0
2.08
0.263
28.33
-1.65
-1.28

N
33.0
32.0
34.0
1.00
0.131
33.00
-0.75
-0.38

NC








0
NF








;•"
NH
36.0
38.0
35.0
1.53
0.197
36.33
-0.11
0.26

NJ
42.0
47.0
44.0
2.52
0.328
44.33
1.43
1.80

NK
30.0
34.0
29.0
2.65
0.328
31.00
-1.13
-0.77

NP
57.0
54.0
54.0
1.73
0.197
55.00
3.49
3.85
It
NT
33.0
41.0
33.0
4.62
0.525
35.67
-0.24
0.13

NZ
32.0
34.0
32.0
1.15
0.131
32.67
-0.81
-0.45

O
35.0
35.0
38.0
1.73
0.197
36.00
-0.17
0.19

OA
38.0
33.0
37.0
2.65
0.328
36.00
-0.17
0.19

OB
31.0
27.0
30.0
2.08
0.263
29.33
.1.45
-1.09

OL








•-
OM
31.0
29.0
31.0
1.15
0.131
30.33
-1.26
-0.90

OQ








•
OS








, •'
P
29.0
29.0
28.0
0.58
0.066
28.67
-1.58
-1.22

PB
33.0
32.0
31.0
1.00
0.131
32.00
-0.94
-0.58

PC








- •
PI
50.0
49.0
51.0
1.00
0.131
50.00
2.52
2.89

PM
36.0
35.0
35.0
0.58
0.066
35.33
-0.30
0.06

PP
36.0
34.0
29.0
3.61
0.459
33.00
-0.75
-0.38

PQ
36.0
33.0
36.0
1.73
0.197
35.00
-0.36
0.00

PT
48.0
46.0
49.0
1.53
0.197
47.67
2.07
2.44

PU
25.0
28.0
27.0
1.53
0.197
26.67
-1.97
-1.60

PV
26.0
27.0
28.0
1.00
0.131
27.00
-1.90
-1.54

PW








•
Q
40.0
41.0
40.0
0.58
0.066
40.33
0.66
1.03

QA
35.0
35.0
35.0
0.00
0.000
35.00
-0.36
0.00

QB
32.0
33.0
32.0
0.58
0.066
32.33
-0.88
-0.51

QC
47.0
44.0
46.0
1.53
0.197
45.67
1.69
2.05

• =
No data submitted

TAG SYMBOLS

It s Above control limit
0 s
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1904	7/33
(		9
Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
QD
38.0
37.0
37.0
0.58
0.066
37.33
0.09
0.45

QI








•
QJ
48.0
34.0
66.0
16.04
3.096
49.33
2.39
2.76

QK








•
QL








•
QM
34.0
32.0
33.0
1.00
0.131
33.00
-0.75
-0.38

QQ
37.0
38.0
37.0
0.58
0.066
37.33
0.09
0.45

QU
33.0
34.0
35.0
1.00
0.131
34.00
-0.56
-0.19

QW
34.0
34.0
34.0
0.00
0.000
34.00
-0.56
-0.19

QX
35.0
35.0
33.0
1.15
0.131
34.33
-0.49
-0.13

QZ
35.0
41.0
34.0
3.79
0.459
36.67
-0.04
0.32

R
37.0
37.0
37.0
0.00
0.000
37.00
0.02
0.38

RA








•
RC
39.0
33.0
33.0
3.46
0.394
35.00
-0.36
0.00

RG
48.0
44.0
46.0
2.00
0.263
46.00
1.75
2.12

RH
31.0
32.0
31.0
0.58
0.066
31.33
-1.07
-0.71

RJ
33.0
33.0
34.0
0.58
0.066
33.33
-0.68
-0.32

RK









RO
32.0
34.0
32.0
1.15
0.131
32.67
-0.81
-0.45

RQ
19.0
22.0
20.0
1.53
0.197
20.33
-3.19
-2.82

RU
38.0
36.0
36.0
1.15
0.131
36.67
-0.04
0.32

RV
46.0
49.0
46.0
1.73
0.197
47.00
1.95
2.31

RW
44.0
38.0
38.0
3.46
0.394
40.00
0.60
0.96

S
32.0
33.0
33.0
0.58
0.066
32.67
-0.81
-0.45

sc
48.0
48.0
47.0
0.58
0.066
47.67
2.07
2.44

SD
37.0
37.0
40.0
1.73
0.197
38.00
0.21
0.58

SF








•
SI
44.0
44.0
44.0
0.00
0.000
44.00
1.37
1.73

SM
36.0
35.0
42.0
3.79
0.459
37.67
0.15
0.51

SP
38.0
41.0
41.0
1.73
0.197
40.00
0.60
0.96

SQ








•
SR
38.0
44.0
43.0
3.21
0.394
41.67
0.92
1.28

ss
48.0
54.0
57.0
4.58
0.591
53.00
3.10
3.46
It
sw
35.0
36.0
35.0
0.58
0.066
35.33
-0.30
0.06

sx
43.0
40.0
42.0
1.53
0.197
41.67
0.92
1.28

sz
37.0
35.0
39.0
2.00
0.263
37.00
0.02
0.38

T
34.0
33.0
37.0
2.08
0.263
34.67
-0.43
-0.06

TA
35.0
36.0
39.0
2.08
0.263
36.67
-0.04
0.32

TB
34.0
35.0
35.0
0.58
0.066
34.67
-0.43
-0.06

TD
37.0
38.0
36.0
1.00
0.131
37.00
0.02
0.38

TE
32.0
32.0
33.0
0.58
0.066
32.33
-0.88
-0.51

TH
33.0
35.0
34.0
1.00
0.131
34.00
-0.56
-0.19

TI
36.0
34.0
34.0
1.15
0.131
34.67
-0.43
-0.06

TL
34.0
35.0
33.0
1.00
0.131
34.00
-0.56
-0.19

TP
16.0
15.0
15.0
0.58
0.066
15.33
-4.15
-3.78
u
• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
U a Below control limit
-------
s,	-
8/33
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TQ
46.0
46.0
40.0
3.46
0.394
44.00
1.37
1.73
TR








TS







•
IT







•
TU
31.0
30.0
28.0
1.53
0.197
29.67
-1.39
-1.03
TV







' •
TW
102.0
82.0
89.0
10.15
1.595
91.00
10.41
10.78 x
UB







9'
UE







•
UJ
41.0
44.0
41.0
1.73
0.197
42.00
0.98
1.35
UK
36.0
33.0
41.0
4.04
0.525
36.67
-0.04
0.32
UV







ft '
UX
46.0
43.0
43.0
1.73
0.197
44.00
1.37
1.73
UY







m
UZ
35.0
31.0
30.0
2.65
0.328
32.00
-0.94
-0.58
VA
38.0
33.0
37.0
2.65
0.328
36.00
-0.17
0.19
VB
33.0
33.0
37.0
2.31
0.263
34.33
-0.49
-0.13
VC
30.0
30.0
30.0
0.00
0.000
30.00
-1.33
-0.96
VE







0
VF
200.0
188.0
202.0
7.57
0.919
196.67
30.75
31.11 x
VG
31.0
27.0
26.0
2.65
0.328
28.00
-1.71
-1.35
VH
38.0
40.0
39.0
1.00
0.131
39.00
0.41
0.77
VI







0
VK







o
VL







0
VM
31.0
29.0
36.0
3.61
0.459
32.00
-0.94
-0.58
VO
32.0
30.0
31.0
1.00
0.131
31.00
-1.13
-0.77
VP
40.0
37.0
39.0
1.53
0.197
38.67
0.34
0.71
VQ







0
VT
34.0
34.0
34.0
0.00
0.000
34.00
-0.56
-0.19
WB







, 9,
X
32.0
33.0
32.0
0.58
0.066
32.33
-0.88
-0.51
Y
40.0
40.0
41.0
0.58
0.066
40.33
0.66
1.03
Z
41.0
44.0
42.0
1.53
0.197
42.33
1.05
1.41
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag_
Lab
Average
Tag
Lab
15.33
20.33
24.67
26.67
27.00
28.00
28.00
28.33
TP
RQ
AL
PU
PV
VG
FZ
MV
28.67
29.33
29.33
29.33
29.67
30.00
30.00
30.00
P
OB
JI
CA
TU
VC
KH
BO
30.33
30.33
30.67
30.67
31.00
31.00
31.00
31.33
OM
IE
EZ
EB
VO
NK
EF
RH
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT s Above control limit
11 = Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
9/33
Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
31.33

CJ
35.00

CE
39.33

KX
31.33

cc
35.33

SW
39.33

IC
31.33

BL
35.33

PM
39.67

IY
31.67

AP
35.33

DD
39.67

DO
32.00

VM
35.33

BK
39.67

AU
32.00

UZ
35.33

BH
40.00

SP
32.00

PB
35.67

NT
40.00

RW
32.00

E
35.67

HE
40.00

A
32.33

X
35.67

FE
40.33

Y
32.33

TE
35.67

AK
40.33

Q
32.33

QB
36.00

VA
40.33

JS
32.33

MQ
36.00

OA
40.33

CO
32.33

L
36.00

O
40.67

MA
32.67

S
36.00

K
41.00

DH
32.67

RO
36.00

FL
41.67

sx
32.67

NZ
36.00

BC
41.67

SR
32.67

AJ
36.33

NH
42.00

UJ
33.00

QM
36.33

LZ
42.00

GQ
33.00

PP
36.33

LT
42.00

BI
33.00

N
36.33

EH
42.33

Z
33.00

DT
36.33

DG
42.33

LE
33.33

RJ
36.33

AF
42.67

FO
33.33

M
36.67

UK
43.00

ML
33.33

C
36.67

TA
44.00

UX
33.33

AA
36.67

RU
44.00

TQ
33.67

DI
36.67

QZ
44.00

SI
34.00

VT
36.67

I
44.33

NJ
34.00

TL
37.00

TD
45.33

AN
34.00

TH
37.00

SZ
45.67

QC
34.00

QW
37.00

R
46.00

RG
34.00

QU
37.00

KL
47.00

RV
34.00

DE
37.00

EL
47.67

sc
34.00

AZ
37.00

BA
47.67

PT
34.33

VB
37.33

QQ
47.67

HI
34.33

QX
37.33

QD
49.33

QJ
34.33

J
37.33

BM
49.33

JE
34.67

TI
37.67

SM
50.00

PI
34.67

TB
38.00

SD
50.67
ft
GI
34.67

T
38.33

BG
51.33
ft
CX
34.67

JY
38.67

VP
51.33
ft
CM
34.67

D
38.67

LF
52.00
ft
FJ
35.00

RC
38.67

CP
53.00
ft
ss
35.00

QA
39.00

VH
53.00
ft
AE
35.00

PQ
39.00

CO
55.00
ft
NP
• = No data submitted
0 ~ Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It = Above control limit
s Below control limit
-------
Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
55.00
ft
HL
65.33
X
DJ
91.00
X
TW
56.00
1t
LR
77.33
X
LS
138.33
X
HP



80.00
X
HU
196.67
X
VF
% responding labs

Frequency distribution




10-


.!¦ ¦¦
-6
I	T 1 .
-2	0	+2
Normalized deviation of the mean from the known value
+4
+6
responding labs	Frequency distribution
10-

			-	-	-	-"t"- f	~	i *
-6	*4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	II s Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994	11/33
	
Beta	Statistical Summary	214 Participants
The known value of this nuclide is 56.0 pCi/F with an expected precision of 10.0; the control limits
are 38.7 to 73.3; the warning regions are 38.7 to 44.4 and 67.6 to 73.3
Statistic	Respondents	Non-outliers
Mean
60.65
Grand Avg 59.08
Std. Dev.
14.97
7.23
Variance
224.13
52.21
% Coef. of Var.
24.68
12.23
% deviation of mean from known value
8.30
5.50
Norm. dev. of mean from known value
0.31
0.43
Median
58.33
58.33
% deviation of median from known value
4.17
4.17
Norm. dev. of median from known value
0.16
0.32
-------
		
/ ^
12/33

EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1094


Beta









Lab
Res. 1
Res. 2

Exper.
Rng anal

¦Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
57.0
59.0
58.0
1.00
0.118
58.00
-0.19
0.35

AA
58.0
60.0
58.0
1.15
0.118
58.67
-0.07
0.46

AE
58.0
57.0
57.0
0.58
0.059
57.33
-0.30
0.23

AF
55.0
48.0
59.0
5.57
0.650
54.00
-0.88
-0.35

AI







•
AJ
59.0
54.0
59.0
2.89
0.295
57.33
-0.30
0.23

AK
64.0
63.0
63.0
0.58
0.059
63.33
0.74
1.27

AL
61.0
61.0
61.0
0.00
0.000
61.00
0.33
0.87

AN
70.0
68.0
72.0
2.00
0.236
70.00
1.89
2.42

AP
60.0
59.0
60.0
0.58
0.059
59.67
0.10
0.64

AU
56.0
55.0
55.0
0.58
0.059
55.33
-0.65
-0.12

AZ
55.0
55.0
49.0
3.46
0.354
53.00
-1.05
-0.52

BA
55.0
55.0
56.0
0.58
0.059
55.33
-0.65
-0.12

BC
49.0
61.0
59.0
6.43
0.709
56.33
-0.48
0.06

BG
69.0
64.0
69.0
2.89
0.295
67.33
1.43
1.96

BH
57.0
57.0
58.0
0.58
0.059
57.33
-0.30
0.23

BI
58.0
57.0
56.0
1.00
0.118
57.00
-0.36
0.17

BK
55.0
55.0
58.0
1.73
0.177
56.00
-0.53
0.00

BL
58.0
60.0
57.0
1.53
0.177
58.33
-0.13
0.40

BM
55.0
44.0
51.0
5.57
0.650
50.00
-1.57
-1.04

BO
52.0
51.0
51.0
0.58
0.059
51.33
-1.34
-0.81

BW
64.0
67.0
66.0
1.53
0.177
65.67
1.14
1.67

C
48.0
51.0
55.0
3.51
0.413
51.33
-1.34
-0.81

CA
56.0
56.0
56.0
0.00
0.000
56.00
-0.53
0.00

CC
73.0
75.0
73.0
1.15
0.118
73.67
2.53
3.06
It
CE
56.0
57.0
57.0
0.58
0.059
56.67
-0.42
0.12

CJ
57.0
63.0
58.0
3.21
0.354
59.33
0.04
0.58

CM
53.0
47.0
62.0
7.55
0.886
54.00
-0.88
-0.35

CO
49.0
48.0
49.0
0.58
0.059
48.67
-1.80
-1.27

CP
58.0
58.0
58.0
0.00
0.000
58.00
-0.19
0.35

CQ
55.0
56.0
58.0
1.53
0.177
56.33
-0.48
0.06

CS








•
CX
65.0
64.0
63.0
1.00
0.118
64.00
0.85
1.39

D
59.0
61.0
53.0
4.16
0.473
57.67
-0.24
0.29

DD
60.0
60.0
59.0
0.58
0.059
59.67
0.10
0.64

DE
58.0
58.0
58.0
0.00
0.000
58.00
-0.19
0.35

DG
62.0
61.0
60.0
1.00
0.118
61.00
0.33
0.87

DH
62.0
64.0
60.0
2.00
0.236
62.00
0.51
1.04

DI








#
DJ
36.0
20.0
34.0
8.72
0.945
30.00
*6.04
-4.50
X
DL
59.0
58.0
60.0
1.00
0.118
59.00
-0.01
0.52

DM








•
DO
73.0
67.0
72.0
3.21
0.354
70.67
2.01
2.54

DP








•
DT
56.0
56.0
56.0
0.00
0.000
56.00
-0.53
0.00

• s No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	x = Determined to be an outlier	s Below control limit
—	o
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994	13 / 33
Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DX








' •
E
64.0
63.0
63.0
0.58
0.059
63.33
0.74
1.27

EA








•
EB
65.0
65.0
63.0
1.15
0.118
64.33
0.91
1.44

EF
52.0
56.0
39.0
8.89
1.008
49.00
-1.75
-1.21

EH
61.0
59.0
61.0
1.15
0.118
60.33
0.22
0.75

EL
54.0
54.0
53.0
0.58
0.059
53.67
-0.94
-0.40

EW
62.0
62.0
61.0
0.58
0.059
61.67
0.45
0.98

EX
68.0
66.0
69.0
1.53
0.177
67.67
1.49
2.02

EZ
48.0
57.0
54.0
4.58
0.532
53.00
-1.05
-0.52

FE
58.0
58.0
58.0
0.00
0.000
58.00
-0.19
0.35

FJ
58.0
58.0
55.0
1.73
0.177
57.00
-0.36
0.17

FK








¦ • '
FL
80.0
78.0
78.0
1.15
0.118
78.67
3.39
3.93
ft
FO








•
FZ
50.0
49.0
50.0
0.58
0.059
49.67
-1.63
-1.10

GE
58.0
59.0
60.0
1.00
0.118
59.00
-0.01
0.52

GI









GQ
48.0
50.0
47.0
1.53
0.177
48.33
-1.86
-1.33

HE
70.0
69.0
68.0
1.00
0.118
69.00
1.72
2.25

m
53.0
55.0
52.0
1.53
0.177
53.33
-1.00
-0.46

HL
70.0
70.0
72.0
1.15
0.118
70.67
2.01
2.54

HP
82:0
91.0
87.0
4.51
0.532
86.67
4>78
5.31
X
HU
105.0
104.0
llliO.
3.79
0.413
106.67
8.24
8.78
X
HX








•
I
60.0
60.0
60.0
0.00
0.000
60.00
0.16
0.69

IA








•
IC
63.0
65.0
64.0
1.00
0.118
64.00
0.85
1.39

IE
TT
67.0
64.0
60.0
3.51
0.413
63.67
0.79
1.33

u.
IU
57.0
57.0
59.0
1.15
0.118
57.67
-0.24
0.29
•
IY
65.0
68.0
70.0
2.52
0.295
67.67
1.49
2.02

J
59.0
60.0
60.0
0.58
0.059
59.67
0.10
0.64

JE
76.0
77.0
77.0
0.58
0.059
76.67
3.05
3.58
ir
JI
51.0
52.0
51.0
0.58
0.059
51.33
-1.34
-0.81

JS
65.0
63.0
62.0
1.53
0.177
63.33
0.74
1.27

JY
59.0
60.0
55.0
2.65
0.295
58.00
-0.19
0.35

K
69.0
66.0
68.0
1.53
0.177
67.67
1.49
2.02

KF








•
KH
52.0
53.0
54.0
1.00
0.118
53.00
-1.05
-0.52

KL
61.0
66.0
62.0
2.65
0.295
63.00
0.68
1.21

KM








•
KX
57.0
58.0
58.0
0.58
0.059
57.67
-0.24
0.29

L
61.0
61.0
62.0
0.58
0.059
61.33
0.39
0.92

LA









SI •
111 in
No data submitted
Insufficient data
X S
TAG SYMBOLS
Determined to be an outlier
IT a Above control limit
= Below control limit
-------
14/33

EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994


Beta









Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LE
70.0
67.0
69.0
1.53
0.177
68.67
1.66
2.19

LF
53.0
53.0
55.0
1.15
0.118
53.67
-0.94
-0.40

LM








•
LR
71.0
72.0
73.0
1.00
0.118
72.00
2.24
2.77

LS
46.0
45.0
45.0
0.58
0.059
45.33
-2.38
-1.85

LT
59.0
62.0
58.0
2.08
0.236
59.67
0.10
0.64

LZ
55.0
56.0
58.0
1.53
0.177
56.33
-0.48
0.06

M
52.0
52.0
54.0
1.15
0.118
52.67
-1.11
-0.58

MA
61.0
62.0
60.0
1.00
0.118
61.00
0.33
0.87

ML
93.0
95.0
91.0
2.00
0.236
93.00
5.88
6.41
X
MN








•
MP








• -
MQ
57.0
54.0
57.0
1.73
0.177
56.00
-0.53
0.00

MV
54.0
53.0
51.0
1.53
0.177
52.67
-1.11
-0.58

N
58.0
58.0
59.0
0.58
0.059
58.33
-0.13
0.40

NC








•
NF








•
NH
64.0
62.0
60.0
2.00
0.236
62.00
0.51
1.04

NJ
70.0
58.0
62.0
6.11
0.709
63.33
0.74
1.27

NK
73.0
61.0
59.0
7.57
0.827
64.33
0.91
1.44

NP
64.0
68.0
66.0
2.00
0.236
66.00
1.20
1.73

NT
60.0
60.0
59.0
0.58
0.059
59.67
0.10
0.64

NZ
75.0
80.0
77.0
2.52
0.295
77.33
3.16
3.70
ir
O
59.0
56.0
60.0
2.08
0.236
58.33
-0.13
0.40

OA
66.0
63.0
65.0
1.53
0.177
64.67
0.97
1.50

OB
60.0
59.0
61.0
1.00
0.118
60.00
0.16
0.69

OL








•
OM
55.0
56.0
58.0
1.53
0.177
56.33
-0.48
0.06

OQ








•
OS








•
P
57.0
57.0
57.0
0.00
0.000
57.00
-0.36
0.17

PB
59.0
58.0
57.0
1.00
0.118
58.00
-0.19
0.35

PC








•
PI
52.0
51.0
52.0
0.58
0.059
51.67
-1.28
-0.75

PM
62.0
64.0
63.0
1.00
0.118
63.00
0.68
1.21

PP
74.0
75.0
72.0
1.53
0.177
73.67
2.53
3.06
it
PQ
56.0
56.0
56.0
0.00
0.000
56.00
-0.53
0.00

PT
55.0
54.0
60.0
3.21
0.354
56.33
-0.48
0.06

PU
65.0
67.0
64.0
1.53
0.177
65.33
1.08
1.62

PV
56.0
57.0
58.0
1.00
0.118
57.00
-0.36
0.17

PW








•
Q
40.0
44.0
40.0
2.31
0.236
41.33
-3.07
-2.54

QA
60.0
59.0
60.0
0.58
0.059
59.67
0.10
0.64

QB
49.0
50.0
49.0
0.58
0.059
49.33
-1.69
-1.15

QC
76.0
72.0
72.0
2.31
0.236
73.33
2.47
3.00

• = No data submitted

TAG SYMBOLS

It s Above control limit
0 s Insufficient data
X S
Determined to be an outlier
II = Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
15/33
Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Avefrage
Normalized deviation
(grand-avg) (known) Tag
QD
63.0
61.0
61.0
1.15
0.118
61.67
0.45
0.98

QI








•
QJ
54.0
42.0
66.0
12.00
1.795
54.00
-0.88
-0.35

QK
58.0
59.0
58.0
0.58
0.059
58.33
-0.13
0.40

QL








>
QM
57.0
56.0
56.0
0.58
0.059
56.33
-0.48
0.06

QQ
58.0
58.0
56.0
1.15
0.118
57.33
-0.30
0.23

QU
55.0
63.0
60.0
4.04
0.473
59.33
0.04
0.58

QW
62.0
56.0
61.0
3.21
0.354
59.67
0.10
0.64

QX
65.0
65.0
64.0
0.58
0.059
64.67
0.97
1.50

QZ
46.0
43.0
45.0
1.53
0.177
44.67
-2.50
-1.96

R
61.0
61.0
61.0
0.00
0.000
61.00
0.33
0.87

RA








•
RC
63.0
58.0
58.0
2.89
0.295
59.67
0.10
0.64

RG
68.0
63.0
66.0
2.52
0.295
65.67
1.14
1.67

RH
52.0
52.0
53.0
0.58
0.059
52.33
-1.17
-0.64

RJ
55.0
55.0
57.0
1.15
0.118
55.67
-0.59
-0.06

RE








•
RO
73.0
69.0
75.0
3.06
0.354
72.33
2.30
2.83

RQ
87.0
92,0
86.0
3.21
0.364
88.33
5.07
5.60
X
RU
59.0
55.0
58.0
2.08
0.236
57.33
-0.30
0.23

RV
61.0
62.0
60.0
1.00
0.118
61.00
0.33
0.87

RW
76.0
66.0
70.0
5.03
0.591
70.67
2.01
2.54

S
58.0
55.0
56.0
1.53
0.177
56.33
-0.48
0.06

sc
58.0
57.0
57.0
0.58
0.059
57.33
-0.30
0.23

SD
53.0
53.0
54.0
0.58
0.059
53.33
-1.00
-0.46

SF








•
SI
53.0
53.0
53.0
0.00
0.000
53.00
-1.05
-0.52

SM
57.0
58.0
57.0
0.58
0.059
57.33
-0.30
0.23

SP
69.0
72.0
76.0
3.51
0.413
72.33
2.30
2.83

SQ








«
SR
62.0
64.0
62.0
1.15
0.118
62.67
0.62
1.15

ss
60.0
65.0
66.0
3.21
0.354
63.67
0.79
1.33

sw
53.0
54.0
54.0
0.58
0.059
53.67
-0.94
-0.40

sx
69.0
70.0
72.0
1.53
0.177
70.33
1.95
2.48

sz
58.0
57.0
59.0
1.00
0.118
58.00
-0.19
0.35

T
55.0
55.0
55.0
0.00
0.000
55.00
-0.71
-0.17

TA
59.0
61.0
61.0
1.15
0.118
60.33
0.22
0.75

TB
65.0
69.0
66.0
2.08
0.236
66.67
1.31
1.85

TD
51.0
51.0
52.0
0.58
0.059
51.33
-1.34
-0.81

TE
62.0
60.0
60.0
1.15
0.118
60.67
0.28
0.81

TH
57.0
54.0
58.0
2.08
0.236
56.33
-0.48
0.06

TI
57.0
62.0
66.0
4.51
0.532
61.67
0.45
0.98

TL
53.0
52.0
52.0
0.58
0.059
52.33
-1.17
-0.64

TP








1 .
• =
0 =
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
= Below control limit
-------
16/33

EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994


Beta









Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TQ
70.0
74.0
70.0
2.31
0.236
71.33
2.12
2.66

TR







•
TS








*
TT








e
TU
65.0
65.0
64.0
0.58
0.059
64.67
0.97
1.50

TV








e
TW
48.0
50.0
43.0
3.61
0.413
47.00
-2.09
-1.56

UB








9
UE









UJ








•
UK
40.0
39.0
38.0
1.00
0.118
39.00
-3.48
-2.94

UV








*v
ux
65.0
60.0
65.0
2.89
0.295
63.33
0.74
1.27

UY
66.0
64.0
63.0
1.53
0.177
64.33
0.91
1.44

UZ
45.0
50.0
55.0
5.00
0.591
50.00
-1.57
-1.04

VA
56.0
54.0
56.0
1.15
0.118
55.33
-0.65
-0.12

VB








©
vc
47.0
47.0
49.0
1.15
0.118
47.67
-1.98
-1.44

VE








*
VF
212.0
216.0
208.0
4.00
0.473
212.00
26.49
2*7.02
X
VG
39.0
36.0
39.0
1.73
0.177
38.00
-3.65
-3.12
a
VH
63.0
67.0
65.0
2.00
0.236
65.00
1.03
1.56

VI








•
VK








•
VL
54.0
51.0
53.0
1.53
0.177
52.67
-1.11
-0.58

VM
59.0
58.0
58.0
0.58
0.059
58.33
-0.13
0.40

vo
53.0
55.0
53.0
1.15
0.118
53.67
-0.94
-0.40

VP
54.0
54.0
52.0
1.15
0.118
53.33
-1.00
-0.46

VQ








•
VT
53.0
59.0
60.0
3.79
0.413
57.33
-0.30
0.23

WB








•
X
44.0
45.0
44.0
0.58
0.059
44.33
-2.55
-2.02

Y
63.0
61.0
63.0
1.15
0.118
62.33
0.56
1.10

Z
74.0
76.0
73.0
1.53
0.177
74.33
2.64
3.18
it
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
30.00
X
DJ
47.67
VC
51.33
TD
38.00

VG
48.33
GQ
51.33
JI
39.00

UK
48.67
CO
51.33
C
41.33

Q
49.00
EF
51.33
BO
44.33

X
49.33
QB
51.67
PI
44.67

Qz
49.67
FZ
52.33
TL
45.33

LS
50.00
UZ
52.33
RH
47.00

TW
50.00
BM
52.67
VL
• = No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
ft
li
h Above control limit
2 Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
17/33
Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
52.67

MV
57.33

BH
61.67

EW
52.67

M
57.33

AJ
62.00

NH
53.00

SI
57.33

AE
62.00

DH
53.00

KH
57.67

KX
62.33

Y
53.00

EZ
57.67

IU
62.67

SR
53.00

AZ
57.67

D
63.00

PM
53.33

VP
58.00

SZ
63.00

KL
53.33

SD
58.00

PB
63.33

UX
53.33

HI
58.00

JY
63.33

NJ
53.67

VO
58.00

FE
63.33

JS.
53.67

SW
58.00

DE
63.33

E
53.67

LF
58.00

CP
63.33

AK
53.67

EL
58.00

A
63.67

SS
54.00

QJ
58.33

VM
63.67

IE
54.00

CM
58.33

QK
64.00

IC
54.00

AF
58.33

O
64.00

CX
55.00

T
58.33

N
64.33

UY
55.33

VA
58.33

BL
64.33

NK
55.33

BA
58.67

AA
64.33

EB
55.33

AU
59.00

GE
64.67

TU
55.67

RJ
59.00

DL
64.67

QX
56.00

PQ
59.33

QU
64.67

OA
56.00

MQ
59.33

CJ
65.00

VH
56.00

DT
59.67

RC
65.33

PU
56.00

CA
59.67

QW
65.67

RG
56.00

BK
59.67

QA
65.67

BW
56.33

TH
59.67

NT
66.00

NP
56.33

S
59.67

LT
66.67

TB
56.33

QM
59.67

J
67.33

BG
56.33

PT
59.67

DD
67.67

K
56.33

OM
59.67

AP
67.67

IY
56.33

LZ
60.00

OB
67.67

EX
56.33

CQ
60.00

I
68.67

LE
56.33

BC
60.33

TA
69.00

HE
56.67

CE
60.33

EH
70.00

AN
57.00

PV
60.67

TE
70.33

SX
57.00

P
61.00

RV
70.67

RW
57.00

FJ
61.00

R
70.67

HL
57.00

BI
61.00

MA
70.67

DO
57.33

VT
61.00

DG
71.33

TQ
57.33

SM
61.00

AL
72.00

LR
57.33

SC
61.33

L
72.33

SP
57.33

RU
61.67

TI
72.33

RO
57.33


61.67

qD
73.33

qc
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
II = Below control limit
-------
18/33
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
73.67
ft
PP
76.67
ft
J£
88.33
X
RQ
73.67
ft
CC
77.33
ft
NZ
93.00
X
ML
74.33
tr
z
78.67
ft
FL
106.67
X
HU



86.67
X
HP
212.00
X
VF
% responding labs

Frequency distribution




10-
O**—r
-6

¦ll.jllllflii
**
responding labs
-4	-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
+4
+6
10-
0	r
•6
jmML
Jfaaal
lJu
lilf.

¦ ¦ «l
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 = Determined to be an outlier
ft = Above control limit
<11 s Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
19/33
Strontium 90
Statistical Summary
214 Participants
The known value of this nuclide is 20.0 pCi/F 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
126(58.9 %) Failed to respond
6(2.8 %) Outliers	
Statistic
. 79(36.9 %) Within all limits
Respondents
3(1.4 %) In warning zone
but within control
Non-outliers
Mean
19.65
Grand Avg 19.57
Std. Dev.
4.73
2.76
Variance
22.39
7.62
% Coef. of Var.
24.09
14.10
% deviation of mean from known value
-1.76
-2.15
Norm. dev. of mean from known value
-0.07
-0.16
Median
19.33
19.33
% deviation of median from known value
-3.33
-3.33
Norm. dev. of median from known value
-0.14
-0.24
6(6.8 %) More than 3 norm. S.D.
3(3.4 %) Between 2 and 3 norm. S.D.
• 60(68.2 %) Within 1 norm. S.D.
of known value
19(21.6 %) Between 1 and 2 norm. S.D.
-------
20/33
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994

Strontium 90







Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
20.0
20.0
19.0
0.58
0.118
19.67
0.03
-0.12
AA
20.0
19.0
20.0
0.58
0.118
19.67
0.03
-0.12
AE







©
AF
19.0
17.0
18.0
1.00
0.236
18.00
-0.54
-0.69
AI







O
AJ







o
AK
20.0
20.0
19.0
0.58
0.118
19.67
0.03
-0.12
AL
22.0
22.0
22.0
0.00
0.000
22.00
0.84
0.69
AN







0
AP







o
AU







A
AZ
21.0
20.0
18.0
1.53
0.354
19.67
0.03
-0.12
BA
17.0
16.0
21.0
2.65
0.591
18.00
-0.54
-0.69
BC
15.0
18.0
17.0
1.53
0.354
16.67
-1.01
-1.15
BG
18.0
19.0
19.0
0.58
0.118
18.67
-0.31
-0.46
BH







•
BI







•
BK








BL
18.0
17.0
20.0
1.53
0.354
18.33
-0.43
-0.58
BM







•
BO
19.0
20.0
20.0
0.58
0.118
19.67
0.03
-0.12
BW







•
C








CA
18.0
19.0
17.0
1.00
0.236
18.00
-0.54
-0.69
CC








CE







•
CJ
18.0
18.0
18.0
0.00
0.000
18.00
-0.54
-0.69
CM







•
CO








CP








CQ
19.0
17.0
18.0
1.00
0.236
18.00
-0.54
-0.69
CS







*'
CX
18.0
17.0
19.0
1.00
0.236
18.00
-0.54
-0.69
D







•
DD
26.0
18.0
14.0
6.11
1.795
19.33
-0.08
-0.23
DE
22.0
22.0
22.0
0.00
0.000
22.00
0.84
0.69
DG
18.0
16.0
17.0
1.00
0.236
17.00
-0.89
-1.04
DH
21.0
22.0
23.0
1.00
0.236
22.00
0.84
0.69
DI







•
DJ







•
DL







•
DM







•
DO
21.0
22.0
20.0
1.00
0.236
21.00
0.50
0.35
DP







»
DT
16.0
14.0
14.0
1.15
0.236
14.67
-1.70
-1.85
• =
No data submitted

TAG SYMBOLS

1T = Above control limit
^0 =
Insufficient data
X s
Determined to be an outlier
U = Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994	21 / 33

Strontium 90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DX








E
20.0
22.0
21.0
1.00
0.236
21.00
0.50
0.35
EA







m
EB
14.0
18.0
21.0
3.51
0.827
17.67
-0.66
-0.81
EF







•
EH
18.0
18.0
18.0
0.00
0.000
18.00
-0.54
-0.69
EL
18.0
17.0
17.0
0.58
0.118
17.33
-0.77
-0.92
EW







•
EX







•
EZ
17.0
20.0
20.0
1.73
0.354
19.00
-0.20
-0.35
FE
19.0
21.0
19.0
1.15
0.236
19.67
0.03
-0.12
FJ
16.0
18.0
18.0
1.15
0.236
17.33
-0.77
-0.92
FK








FL







•
FO







•
FZ
19.0
21.0
17.0
2.00
0.473
19.00
-0.20
-0.35
GE







m.
61








GQ








HE
27.0
27.0
27.0
0.00
0.000
27.00
2.57
2.42
HI







•
HL







*
HP
17.0
15.0
13.0
2.00
0.473
15.00
-1.58
-1.73
HU
20.0
20.0
21.0
0.58
0.118
20.33
0.26
0.12
HX
I







•
•
IA







•
IC
17.0
18.0
17.0
0.58
0.118
17.33
-0.77
-0.92
IE







•
n







•'
ru







•
IY







•
J
20.0
20.0
20.0
0.00
0.000
20.00
0.15
0.00
cJE
20.0
21.0
20.0
0.58
0.118
20.33
0.26
0.12
JI







•
JS
16.0
18.0
18.0
1.15
0.236
17.33
-0.77
-0.92
JY
24.0
24.0
25.0
0.58
0.118
24.33
1.65
1.50
K
21.0
23.0
23.0
1.15
0.236
22.33
0.96
0.81
KF








KH
18.0
20.0
19.0
1.00
0.236
19.00
-0.20
-0.35
KL
19.0
22.0
21.0
1.53
0.354
20.67
0.38
0.23
KM







•
KX
19.0
20.0
19.0
0.58
0.118
19.33
-0.08
-0.23
L







•
LA







•
• =
{ 0 S
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T a Above control limit
U = Below control limit
-------
(f	A
22/33

EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994

Strontium 90











Exper.
Rng anal

Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LE








LF







•
LM







•
LR
28.0
28.0
28.0
0.00
0.000
28.00
2.92
2.77
LS
14.0
16.0
14.0
1.15
0.236
14.67
-1.70
-1.85
LT
20.0
21.0
21.0
0.58
0.118
20.67
0.38
0.23
LZ







«
M
23.0
23.0
23.0
0.00
0.000
23.00
1.19
1.04
MA







•
ML







•
MN








MP







•
MQ
19.0
19.0
19.0
0.00
0.000
19.00
-0.20
-0.35
MV







•
N







•
NC







•
NF








NH







•
NJ
18.0
17.0.
18.0
0.58
0.118
17.67
-0.66
-0.81
NK







•
NP
20.0
20.0
22.0
1.15
0.236
20.67
0.38
0.23
NT







•
NZ







•
O







•
OA
19.0
19.0
20.0
0.58
0.118
19.33
-0.08
-0.23
OB







•
OL







•
OM







•
OQ







•'
OS







•
P







•
PB
20.0
21.0
20.0
0.58
0.118
20.33
0.26
0.12
PC







•
PI








PM







•
PP
23.0
20.0
22.0
1.53
0.354
21.67
0.73
0.58
PQ







•
PT
17.0
16.0
16.0
0.58
0.118
16.33
-1.12
-1.27
PU
18.0
17.0
18.0
0.58
0.118
17.67
-0.66
-0.81
PV
15.0
16.0
17.0
1.00
0.236
16.00
-1.24
-1.39
PW







•
Q
12.0
12.0
13.0
0.58
0.118
12.33
-2.51
-2.66
QA







•
QB







¦ •
QC







»j
• 3 No data submitted	TAG SYMBOLS	ft a Above control limit
0 = InBufficient data	x = Determined to be an outlier	U s Below control limit
-------
	"	
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994	23 / 33
Strontium 90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
QD








•
QI









QJ
23.0
19.0
22.0
2.08
0.473
21.33
0.61
0.46

QK
10.0
10.0
10.0
0.00
0.000
10.00
-3.31
-3.46

QL








•
QM
18.0
19.0
14.0
2.65
0.591
17.00
-0.89
-1.04

QQ








•
QU
27.0
25.0
22.0
2.52
0.591
24.67
1.77
1.62

QW
26.0
26.0
23.0
1.73
0.354
25.00
1.88
1.73

QX








«
QZ
21.0
18.0
19.0
1.53
0.354
19.33
-0.08
-0.23

R
17.0
18.0
17.0
0.58
0.118
17.33
-0.77
-0.92

RA
21.0
20.0
21.0
0.58
0.118
20.67
0.38
0.23

RC
16.0
16.0
15.0
0.58
0.118
15.67
-1.35
-1.50

RG









RH
18.0
18.0
18.0
0.00
0.000
18.00
-0.54
-0.69

RJ








•
RE









RO








»•,
RQ
1.0
1.0
1.0
0.00
0.000
LOO
-6.43
-6.58
X
RU
40.0
37.0
30.0
5.13
1.345
35.67
5.58
5.43
X
RV
20.0
18.0
21.0
1.53
0.354
19.67
0.03
-0.12

RW








•-
S








. •
sc
23.0
25.0
21.0
2.00
0.473
23.00
1.19
1.04

SD
17.0
19.0
20.0
1.53
0.354
18.67
-0.31
-0.46

SF








•
SI
20.0
20.0
20.0
0.00
0.000
20.00
0.15
0.00

SM
7.0
8.0
7.0
0.58
0.118
7.33"
-4.24
-4.39
X
SP








•
SQ








•
SR








•
ss
19.0
20.0
18.0
1.00
0.236
19.00
-0.20
-0.35

sw
23.0
25.0
26.0
1.53
0.354
24.67
1.77
1.62

sx








•
sz








•
T
18.0
18.0
18.0
0.00
0.000
18.00
-0.54
-0.69

TA








•
TB
22.0
24.0
26.0
2.00
0.473
24.00
1.53
1.39

TD
27.0
40.0
39.0
7.23
2.020
35.33
5.46
5.31
X
TE








•
TH








•
TI
18.0
18.0
22.0
2.31
0.473
19.33
-0.08
-0.23

TL
23.0
22.0
26.0
2.08
0.473
23.67
1.42
1.27

TP








•
• =
0 S
^	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U s Below control limit
	
-------
24/33

EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
Strontium 90




	N
Lab
Res. 1
Res. 2

Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
TQ
19.0
18.0
18.0
0.58
0.118
18.33 -0.43 -0.58
TR





o
TS





c
TT





c>
TU





c
TV






TW





•
UB





•
UE





•
UJ






UK





•
UV





•
UX
23.0
20.0
22.0
1.53
0.354
21.67 0.73 0.58
UY





*
UZ





•
VA
21.0
21.0
21.0
0.00
0.000
21.00 0.50 0.35
VB





•
VC






VE






VF





•
VG
18.0
17.0
18.0
0.58
0.118
17.67 -0.66 -0.81
VH






VI





•
VK





•
VL
24.0
24.0
24.0
0.00
0.000
24.00 1.53 1.39
VM





•
VO
18.0
20.0
19.0
1.00
0.236
19.00 -0.20 -0.35
VP
36.0
34.0
36.0
1.00
0.236
35.00 5.35 5.20 X
VQ





•
VT





•
WB






X
17.0
19.0
15.0
2.00
0.473
17.00 -0.89 -1.04
Y





•
Z
19.0
20.0
20.0
0.58
0.118
19.67 0.03 -0.12
1
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
1.00
X
RQ
16.00
PV
17.33
IC
7.33
X
SM
16.33
PT
17.33
FJ
10.00
X
QK
16.67
BC
17.33
EL
12.33

Q
17.00
X
17.67
VG
14.67

LS
17.00
QM
17.67
PU
14.67

DT
17.00
DG
17.67
NJ
15.00

HP
17.33
R
17.67
EB
15.67

RC
17.33
JS
18.00
T
• = No data submitted

TAG SYMBOLS

IT
= Above control limit
0 = Insufficient data

x s Determined to be an outlier

= Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994	25 / 33
Strontium 90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.00

RH
19.33

KX
21.00

DO
18.00

EH
19.33

DD
21.33

QJ
18.00

CX
19.67

Z
21.67

ux
18.00

CQ
19.67

RV
21.67

pp
18.00

CJ
19.67

FE
22.00

DH
18.00

CA
19.67

BO
22.00

DE
18.00

BA
19.67

AZ
22.00

AL
18.00

AF
19.67

AK
22.33

K
18.33

TQ
19.67

AA
23.00

SC
18.33

BL
19.67

A
23.00

M
18.67

SD
20.00

SI
23.67

TL
18.67

BG
20.00

J
24.00

VL
19.00

VO
20.33

PB
24.00

TB
19.00

ss
20.33

JE
24.33

JY
19.00

MQ
20.33

HU
24.67

SW
19.00

KH
20.67

RA
24.67

QU
19.00

FZ
20.67

NP
25.00

QW
19.00

EZ
20.67

LT
27.00

HE
19.33

TI
20.67

KL
28.00

LR
19.33

QZ
21.00

VA
35.00
X
VP
19.33

OA
21.00

E
35.33
35.67
X
X
TD
RU
% responding labs	Frequency distribution
10-:

-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
responding labs	Frequency distribution
10-
J-M
llljlll
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
• 5 No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	= Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
26/33
Cesium 137
Statistical Summary
214 Participants
The known value of this nuclide is 15.0 pCi/F 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
68(31.8 %) Failed to respond «
134(62.6 %) Within all limits
* \ K
« \ \
• X Ps.
* \j K
~ \
* X Ps.
# \| >S«_
0
5(2.3 %) Outliers '*
|
Statistic
		
11
Respondents
7(3.3 %) In warning zone
but within control
Non-outliers
Mean
17.17
Grand Avg 16.59
Std. Dev.
4.10
2.42
Variance
16.83
5.87
% Coef. of Var.
23.90
14.61
% deviation of mean from known value
14.44
10.59
Norm. dev. of mean from known value
0.53
0.66
Median
16.33
16.33
% deviation of median from known value
8.89
8.89
Norm. dev. of median from known value
0.33
0.55
5(3.4 %) More than 3 norm. S.D.
7(4.8 %) Between 2 and 3 norm
; 97(66.4 %) Within 1 norm. S.D.
of known value
. S.D.	I II C
37(25.3 %) Between 1 and 2 norm. S.D.
-------
ft	
27/33
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994


Cesium 137







>1
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
14.0
16.0
15.0
1.00
0.236
15.00
-0.55
0.00

AA
20.0
20.0
18.0
1.15
0.236
19.33
0.95
1.50

AE
20.0
18.0
18.0
1.15
0.236
18.67
0.72
1.27

AF
17.0
15.0
19.0
2.00
0.473
17.00
0.14
0.69

AI








•
AJ








•
AK
15.0
15.0
15.0
0.00
0.000
15.00
-0.55
0.00

AL
15.0
14.0
15.0
0.58
0.118
14.67
-0.67
-0.12

AN
23.0
17.0
18.0
3.21
0.709
19.33
0.95
1.50

AP








•
AU
16.0
17.0
15.0
1.00
0.236
16.00
-0.20
0.35

AZ
16.0
17.0
17.0
0.58
0.118
16.67
0.03
0.58

BA
16.0
15.0
15.0
0.58
0.118
15.33
-0.43
0.12

BC
23.0
23.0
22.0
0.58
0.118
22.67
2.11
2.66

BG
35.0
26.0
30.0
5.00
1.345
30.00
4.65
5.20
X
BH
15.0
16.0
15.0
0.58
0.118
15.33
-0.43
0.12

BI
20.0
20.0
19.0
0.58
0.118
19.67
1.07
1.62

BK








•
BL
14.0
16.0
15.0
1.00
0.236
15.00
-0.55
0.00

BM
16.0
16.0
16.0
0.00
0.000
16.00
-0.20
0.35

BO
13.0
15.0
16.0
1.53
0.354
14.67
-0.67
-0.12

BW
34.0
33.0
24.0
5.51
1.345
30.33
4.76
5.31
X
C
14.0
15.0
15.0
0.58
0.118
14.67
-0.67
-0.12

CA
14.0
14.0
14.0
0.00
0.000
14.00
-0.90
-0.35

CC








•
CE
13.0
13.0
13.0
0.00
0.000
13.00
-1.24
-0.69

CJ
16.0
16.0
19.0
1.73
0.354
17.00
0.14
0.69

CM








•
CO
17.0
17.0
15.0
1.15
0.236
16.33
-0.09
0.46

CP
18.0
17.0
18.0
0.58
0.118
17.67
0.37
0.92

CQ
19.0
21.0
20.0
1.00
0.236
20.00
1.18
1.73

cs








•
cx
19.0
17.0
21.0
2.00
0.473
19.00
0.84
1.39

D
17.0
15.0
15.0
1.15
0.236
15.67
-0.32
0.23

DD
21.0
19.0
19.0
1.15
0.236
19.67
1.07
1.62

DE
16.0
16.0
17.0
0.58
0.118
16.33
-0.09
0.46

DG
19.0
18.0
16.0
1.53
0.354
17.67
0.37
0.92

DH
16.0
15.0
15.0
.0.58
0.118
15.33
-0.43
0.12

DI








~
DJ








•
DL
15.0
14.0
16.0
1.00
0.236
15.00
-0.55
0.00

DM








•
DO
18.0
17.0
17.0
0.58
0.118
17.33
0.26
0.81

DP








•
DT
18.0
18.0
15.0
1.73
0.354
17.00
0.14
0.69

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
l03
Insufficient data
x =
Determined to be an outlier
= Below control limit
	JJ
-------
¦
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994	28 / 33
Cesium 137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DX








•
E
16.0
16.0
15.0
0.58
0.118
15.67
-0.32
0.23

EA








•
EB
15.0
15.0
14.0
0.58
0.118
14.67
-0.67
-0.12

EF








•
EH
17.0
16.0
14.0
1.53
0.354
15.67
-0.32
0.23

EL
15.0
16.0
17.0
1.00
0.236
16.00
-0.20
0.35

EW








•
EX
20.0
20.0
18.0
1.15
0.236
19.33
0.95
1.50

EZ
18.0
17.0
16.0
1.00
0.236
17.00
0.14
0.69

FE
14.0
14.0
12.0
1.15
0.236
13.33
-1.13
-0.58

FJ
13.0
18.0
19.0
3.21
0.709
16.67
0.03
0.58

FK








•
FL
17.0
18.0
18.0
0.58
0.118
17.67
0.37
0.92

FO









FZ
14.0
14.0
14.0
0.00
0.000
14.00
-0.90
-0.35

GE
14.0
16.0
15.0
1.00
0.236
15.00
-0.55
0.00

GI
19.0
20.0
19.0
0.58
0.118
19.33
0.95
1.50

GQ
15.0
15.0
15.0
0.00
0.000
15.00
-0.55
0.00

HE
15.0
15.0
15.0
0.00
0.000
15.00
-0.55
0.00

m








•
HL
13.0
14.0
13.0
0.58
0.118
13.33
-1.13
-0.58

HP
18.0
20.0
25.0
3.61
0.827
21.00
1.53
2.08

HU
20.0
21.0
20.0
0.58
0.118
20.33
1.30
1.85

HX








•
I








•
LA
18.0
17.0
17.0
0.58
0.118
17.33
0.26
0.81

IC
17.0
19.0
18.0
1.00
0.236
18.00
0.49
1.04

IE








• ;
n








•
IU
17.0
18.0
17.0
0.58
0.118
17.33
0.26
0.81

IY








' •
J
17.0
16.0
18.0
1.00
0.236
17.00
0.14
0.69

JE
18.0
17.0
20.0
1.53
0.354
18.33
0.60
1.15

JI
13.0
14.0
12.0
1.00
0.236
13.00
-1.24
-0.69

JS
14.0
14.0
15.0
0.58
0.118
14.33
-0.78
-0.23

JY
20.0
16.0
19.0
2.08
0.473
18.33
0.60
1.15

K
19.0
27.0
22.0
4.04
0.945
22.67
2.11
2.66

KF








•
KH
18.0
23.0
26.0
4.04
0.945
22.33
1.99
2.54

KL
18.0
19.0
19.0
0.58
0.118
18.67
0.72
1.27

KM
15.0
15.0
12.0
1.73
0.354
14.00
-0.90
-0.35

KX
13.0
14.0
14.0
0.58
0.118
13.67
-1.01
-0.46

L
10.0
10.0
9.0
0.58
0.118
9.67
-2.40
-1.85

LA








' •-
• =
I 0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It a Above control limit
U s Below control limit
-------
29/33
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994


Cesium 137







-
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LE
28.0
26.0
26.0
1.15
0.236
26.67
3.49
4;04
X
LF
15.0
15.0
17.0
1.15
0.236
15.67
-0.32
0.23

LM








•
LR
16.0
17.0
16.0
0.58
0.118
16.33
-0.09
0.46

LS








»
LT
15.0
15.0
15.0
0.00
0.000
15.00
-0.55
0.00

LZ








•
M
17.0
19.0
19.0
1.15
0.236
18.33
0.60
1.15

MA
11.0
17.0
11.0
3.46
0.709
13.00
-1.24
-0.69

ML
17.0
18.0
19.0
1.00
0.236
18.00
0.49
1.04

MN








•
MP
15.0
15.0
16.0
0.58
0.118
15.33
-0.43
0.12

MQ
19.0
19.0
18.0
0.58
0.118
18.67
0.72
1.27

MV
18.0
18.0
19.0
0.58
0.118
18.33
0.60
1.15

N
15.0
16.0
16.0
0.58
0.118
15.67
-0.32
0.23

NC








•
NF








•
NH
20.0
18.0
19.0
1.00
0.236
19.00
0.84
1.39

NJ
18.0
15.0
15.0
1.73
0.354
16.00
-0.20
0.35

NK








• .
NP
13.0
15.0
12.0
1.53
0.354
13.33
-1.13
-0.58

NT








•
NZ
23.0
23.0
14.0
5.20
1.120
20.00
1.18
1.73

O
17.0
16.0
15.0
1.00
0.236
16.00
-0.20
0.35

OA
15.0
15.0
16.0
0.58
0.118
15.33
-0.43
0.12

OB
15.0
14.0
10.0
2.65
0.591
13.00
-1.24
-0.69

OL








•
OM
16.0
15.0
20.0
2.65
0.591
17.00
0.14
0.69

OQ








•
OS








•
P
17.0
19.0
23.0
3.06
0.709
19.67
1.07
1.62

PB
15.0
15.0
16.0
0.58
0.118
15.33
-0.43
0.12

PC








•
PI
14.0
13.0
14.0
0.58
0.118
13.67
-1.01
-0.46

PM








•
PP
19.0
19.0
18.0
0.58
0.118
18.67
0.72
1.27

PQ
18.0
18.0
18.0
0.00
0.000
18.00
0.49
1.04

PT
19.0
21.0
21.0
1.15
0.236
20.33
1.30
1.85

PU
22.0
25.0
18.0
3.51
0.827
21.67
1.76
2.31

PV
17.0
18.0
19.0
1.00
0.236
18.00
0.49
1.04

PW
13.0
14.0
16.0
1.53
0.354
14.33
-0.78
-0.23

Q
16.0
17.0
18.0
1.00
0.236
17.00
0.14
0.69

QA
18.0
18.0
18.0
0.00
0.000
18.00
0.49
1.04

QB
15.0
16.0
14.0
1.00
0.236
15.00
-0.55
0.00

QC








•
• 3
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
H = Below control limit

-------
		—	' ¦ o
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994	30 / 33
Cesium 137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
QD








•
QI








•
QJ
14.0
14.0
13.0
0.58
0.118
13.67
-1.01
-0.46

QK
14.0
14.0
14.0
0.00
0.000
14.00
-0.90
-0.35

QL
16.0
15.0
15.0
0.58
0.118
15.33
-0.43
0.12

QM
15.0
16.0
16.0
0.58
0.118
15.67
-0.32
0.23

QQ







•
QU
15.0
12.0
11.0
2.08
0.473
12.67
-1.36
-0.81

QW
12.0
13.0
14.0
1.00
0.236
13.00
-1.24
-0.69

QX
16.0
16.0
19.0
1.73
0.354
17.00
0.14
0.69

QZ
16.0
15.0
16.0
0.58
0.118
15.67
-0.32
0.23

R
16.0
16.0
16.0
0.00
0.000
16.00
-0.20
0.35

RA
17.0
17.0
18.0
0.58
0.118
17.33
0.26
0.81

RC
19.0
18.0
19.0
0.58
0.118
18.67
0.72
1.27

RG








•
RH
12.0
12.0
11.0
0.58
0.118
11.67
-1.71
-1.15

RJ









RK








•
RO
15.0
14.0
17.0
1.53
0.354
15.33
-0.43
0.12

RQ
17.0
16.0
13.0
2.08
0.473
15.33
-0.43
0.12

RU
16.0
18.0
18.0
1.15
0.236
17.33
0.26
0.81

RV
15.0
15.0
17.0
1.15
0.236
15.67
-0.32
0.23

RW








•
S
15.0
16.0
16.0
0.58
0.118
15.67
-0.32
0.23

sc
15.0
15.0
18.0
1.73
0.354
16.00
-0.20
0.35

SD
14.0
17.0
16.0
1.53
0.354
15.67
-0.32
0.23

SF








•
SI
19.0
19.0
19.0
0.00
0.000
19.00
0.84
1.39

SM
15.0
20.0
22.0
3.61
0.827
19.00
0.84
1.39

SP








•
SQ








•
SR
15.0
16.0
19.0
2.08
0.473
16.67
0.03
0.58

ss
16.0
16.0
16.0
0.00
0.000
16.00
-0.20
0.35

sw
17.0
17.0
17.0
0.00
0.000
17.00
0.14
0.69

sx
15.0
15.0
15.0
0.00
0.000
15.00
-0.55
0.00

sz
23.0
22.0
22.0
0.58
0.118
22.33
1.99
2.54

T
14.0
16.0
16.0
1.15
0.236
15.33
-0.43
0.12

TA
17.0
17.0
18.0
0.58
0.118
17.33
0.26
0.81

TB
22.0
21.0
15.0
3.79
0.827
19.33
0.95
1.50

TD
11.0
10.0
9.0
1.00
0.236
10.00
-2.28
-1.73

TE
19.0
19.0
18.0
0.58
0.118
18.67
0.72
1.27

TH








•
TI
17.0
16.0
16.0
0.58
0.118
16.33
-0.09
0.46

TL
18.0
17.0
17.0
0.58
0.118
17.33
0.26
0.81

TP
16.0
15.0
15.0
0.58
0.118
15.33
-0.43
0.12

• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U s Below control limit
-------
(, ~
31/33
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
Cesium 137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TQ
18.0
17.0
16.0
1.00
0.236
17.00
0.14
0.69
TR







•
TS







V
IT







V
TU
52.0
60.0
38.0
7.67
2.245
46.67
10,42
10.97 x
TV







O '
TW







O
UB







9
UE







<9
UJ







• .
UK







•
UV







•
UX
19.0
20.0
22.0
1.53
0.354
20.33
1.30
1.85
UY
16.0
17.0
16.0
0.58
0.118
16.33
-0.09
0.46
UZ







-9
VA
14.0
14.0
14.0
0.00
0.000
14.00
-0.90
-0.35
VB
16.0
18.0
17.0
1.00
0.236
17.00
0.14
0.69
VC








VE
19.0
17.0.
13.0
3.06
0.709
16.33
-0.09
0.46
VF







•
VG
16.0
15.0
15.0
0.58
0.118
15.33
-0.43
0.12
VH
18.0
20.0
23.0
2.52
0.591
20.33
1.30
1.85
VI







•
VK







•
VL
15.0
16.0
17.0
1.00
0.236
16.00
-0.20
0.35
VM
19.0
18.0
17.0
1.00
0.236
18.00
0.49
1.04
VO
15.0
15.0
15.0
0.00
0.000
15.00
-0.55
0.00
VP
23.0
25.0
20.0
2.52
0.591
22.67
2.11
2.66
VQ







•
VT







. •
WB







•'
X
15.0
15.0
16.0
0.58
0.118
15.33
-0.43
0.12
Y
16.0
15.0
16.0
0.58
0.118
15.67
-0.32
0.23
Z
32.0
34.0
36.0
1.53
0.364
33.67
5.92
6.47 x
Average
Tag
Data sorted by Laboratory Average
Lab Average	Tag	Lab Average
Tag.
Lab
9.67
10.00
11.67
12.67
13.00
13.00
13.00
13.00
L
TD
RH
QU
QW
OB
MA
JI
13.00
13.33
13.33
13.33
13.67
13.67
13.67
14.00
CE
NP
HL
FE
QJ
PI
KX
VA
14.00
14.00
14.00
14.00
14.33
14.33
14.67
14.67
QK
KM
FZ
CA
PW
JS
EB
C
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft = Above control limit
= Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
32/33
Cesium 137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
14.67

BO
16.00

R
18.00

IC
14.67

AL
16.00

O
18.33

MV
15.00

VO
16.00

NJ
18.33

M
15.00

sx
16.00

EL
18.33

JY
15.00

QB
16.00

BM
18.33

JE
15.00

LT
16.00

AU
18.67

TE
15.00

HE
16.33

VE
18.67

RC
15.00

GQ
16.33

UY
18.67

PP
15.00

GE
16.33

TT
18.67

MQ
15.00

DL
16.33

LR
18.67

KL
15.00

BL
16.33

DE
18.67

AE
15.00

AK
16.33

CO
19.00

SM
15.00

A
16.67

SR
19.00

SI
15.33

X
16.67

FJ
19.00

NH
15.33

VG
16.67

AZ
19.00

CX
15.33

TP
17.00

VB
19.33

TB
15.33

T
17.00

TQ
19.33

GI
15.33

RQ
17.00

SW
19.33

EX
15.33

RO
17.00

QX
19.33

AN
15.33

QL
17.00

Q
19.33

AA
15.33

PB
17.00

OM
19.67

P
15.33

OA
17.00

J
19.67

DD
15.33

MP
17.00

EZ
19.67

BI
15.33

DH
17.00

DT
20.00

NZ
15.33

BH
17.00

CJ
20.00

CQ
15.33

BA
17.00

AF
20.33

VH
15.67

Y
17.33

TL
20.33

UX
15.67

SD
17.33

TA
20.33

PT
15.67

S
17.33

RU
20.33

HU
15.67

RV
17.33

RA
21.00

HP
15.67

QZ
17.33

IU
21.67

PU
15.67

QM
17.33

IA
22.33

sz
15.67

N
17.33

DO
22.33

KH
15.67

LF
17.67

FL
22.67

VP
15.67

EH
17.67

DG
22.67

K
15.67

E
17.67

CP
22.67

BC
15.67

D
18.00

VM
26.67
X
LE
16.00

VL
18.00

QA
30.00
X
BG
16.00

SS
18.00

PV
30.33
X
BW
16.00

sc
18.00

PQ
33.67
X
Z



18.00

ML
46.67
X
TU
• = No data submitted	TAG SYMBOLS	1T = Above control limit
0 s Insufficient data	x = Determined to be an outlier	II a Below control limit
-------
—
33 / 33	EMSL-LV Performance Evaluation: Air Filter, 26-Aug-1994
Cesium 137
% responding labs	Frequency distribution	
din
10-
CI
- _llyllh|LhT _¦
i	i	i	i	i ~	....
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
Hi
% responding labs	Frequency distribution
10-
T.
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
v
-------
United States	Office of Research and	EPA/600/'R-94/207
Environmental Protection	Development	December 1994
Agency	Washington, DC 2C460
&EPA Uranium-Radium in
Water Performance
Evaluation Study
A Statistical Evaluation of
the September 16,1994 Data
-------
Uranium-Radium in Water
Performance Evaluation Study
September 16, 1994
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; September 16, 1994.
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.
Chemist
Radioanaiysis 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, 16-Sep-1994 1/23
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 HiHt.rihiit.inn 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.
-------
2/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994
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: Uranium-Radium in Water, 16-Sep-1994 3/23
Uranium (Natural)	Statistical Summary	187 Participants
The known value of this nuclide is 35.0 pCi/1 with an expected precision of 3.0; the control limits
are 29.8 to 40.2; the warning regions are 29.8 to 31.5 and 38.5 to 40.2
46(24.6 %) Failed to respond \
9(4.8 %) Outliers '
15(8.0 %) Out of control •'
but not an outlier
Statistic
94(50.3 %) Within all limits
Respondents
• 23(12.3 %) In warning zone
but within control
Non-outliers
Mean
33.27
Grand Avg 34.24
Std. Dev.
5.63
3.36
Variance
31.75
11.26
% Coef. of Var.
16.94
9.80
% deviation of mean from known value
-4.95
-2.18
Norm. dev. of mean from known value
-0.31
-0.23
Median
34.27
34.38
% deviation of median from known value
-2.10
-1.76
Norm. dev. of median from known value
-0.13
-0.18
25(17.7 %) More than 3 norm. S.D. •,
22(15.6 %) Between 2 and
6(39.7 %) Within 1 norm. S.D.
of known value
Between 1 and 2 norm. S.D.
-------
4/23
I
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
40.5
39.2
38.8
0.89
0.335
39.50
3.04
2.60
AA
37.3
40.9
39.0
1.80
0.709
39.07
2.79
2.35
AE
38.0
31.8
36.1
3.18
1.420
35.30
0.61
0.17
AF
34.8
34.4
36.1
0.89
0.335
35.10
0.50
0.06
AH







•
AI








AJ
40.1
29.1
36.5
5.61
3.221
35.23
0.58
0.13
AK
34.6
36.5
33.6
1.47
0.571
34.90
0.38
-0.06
AL
35.1
39.2
42.5
3.71
1.870
38.93
2.71
2.27
AP
29.7
32.4
37.4
3.91
1.983
33.17
-0.62
-1.06
AR
30.1
30.3
30.1
0.12
0.039
30.17
-2.35
-2.79
AU







•
AW
28.1
30.7
28.6
1.38
0.512
29.13
-2.95
-3.39 U
AZ
34.7
37.5
36.6
1.43
0.551
36.27
1.17
0.73
BA
39.3
36.7
34.8
2.26
0.886
36.93
1.56
1.12
BB







•
BC
34.7
34.2
34.4
0.25
0.098
34.43
0.11
-0.33
BG
36.0
33.5
33.7
1.39
0.492
34.40
0.09
-0.35
BG
36.0
41.0
40.0
2.65
0.984
39.00
2.75
2.31
BG
30.8
32.2
31.4
0.70
0.276
31.47
-1.60
-2.04
BH
33.0
34.6
33.8
0.80
0.315
33.80
-0.25
-0.69
BK
31.7
32.0
31.5
0.25
0.098
31.73
-1.45
-1.89
BL
6.0
6.0
6.0
0.00
0.000
6.00
-16.30
-16.74 x
BM
36.2
33.4
32.0
2.14
0.827
33.87
-0.21
-0.65
BN
24.3
30.6
27.6
3.15
1.458
27.50
-3.89
-4.33 U
BO
39.6
33.8
34.3
3.21
1.270
35.90
0.96
0.52
C
32.0
32.1
32.2
0.10
0.039
32.10
-1.23
-1.67
CA
33.6
32.1
30.0
1.81
0.709
31.90
-1.35
-1.79
CC







•
CE
33.7
34.3
34.5
0.42
0.158
34.17
-0.04
-0.48
CG
36.3
34.5
33.9
1.25
0.473
34.90
0.38
-0.06
CJ
39.0
38.0
39.0
0.58
0.197
38.67
2.56
2.12
CK
33.3
34.7
33.6
0.74
0.276
33.87
-0.21
-0.65
CM
33.9
32.8
34.6
0.91
0.354
33.77
-0.27
-0.71
CO







•
CS
33.3
35.6
35.0
1.19
0.453
34.63
0.23
-0.21
CX
37.4
39.7
38.9
1.17
0.453
38.67
2.56
2.12
D
34.7
35.0
36.1
0.74
0.276
35.27
0.59
0.15
DB
37.4
36.0
35.6
0.95
0.354
36.33
1.21
0.77
DE
34.7
34.8
35.0
0.15
0.059
34.83
0.34
-0.10
DO
34.3
34.8
34.0
0.40
0.158
34.37
0.07
-0.37
DP







•
DT
38.4
35.3
41.5
3.10
1.420
38.40
2.40
1.96
DZ
29.4
28.0
29.1
0.74
0.276
28.83
-3.12
-3.56 U
E
30.5
30.4
31.0
0.32
0.118
30.63
-2.08
-2.52
• = No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 = Below control limit
v\		
-------
ft	








	^

EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 5/23
Uranium (Natural)







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
37.8
37.0
37.2
0.42
0.158
37.33
1.79
1.35

EH








•
EO








• '
EP









ER








•
FE








•
FJ
40.6
40.0
39.7
0.46
0.177
40.10
3.38
2.94

FN
31.7
29.2
32.2
1.61
0.591
31.03
-1.85
-2.29

FP








- *
FZ
37.0
32.0
36.0
2.65
0.984
35.00
0.44
0.00

GG








•
GN
34.0
37.4
38.7
2.43
0.925
36.70
1.42
0.98

GO
34.4
34.3
36.6
1.30
0.453
35.10
0.50
0.06

GQ
36.1
35.8
35.4
0.35
0.138
35.77
0.88
0.44

HE
30.3
30.6
30.6
0.17
0.059
30.50
-2.16
-2.60

HK
37.3
36.6
36.6
0.40
0.138
36.83
1.50
1.06

HL
35.4
35.4
35.4
0.01
0.000
35.40
0.67
0.23

HP
34.1
35.3
35.1
0.64
0.236
34.83
0.34
-0.10

HU









I
31.2
30.9
28.8
1.31
0.473
30.30
-2.27
-2.71

IA








•
ID
40.2
39.9
41.0
0.57
0.217
40.37
3.54
3.10
It
IE
32.1
33.9
33.6
0.96
0.354
33.20
-0.60
-1.04

J
34.0
34.6
35.4
0.70
0.276
34.67
0.25
-0.19

JE
35.0
29.2
31.5
2.92
1.270
31.90
-1.35
-1.79

JO








» '
JK
33.3
34.4
35.5
1.10
0.433
34.40
0.09
-0.35

JN








•
JP
35.1
34.1
35.3
0.64
0.236
34.83
0.34
-0.10

JS
28.2
28.4
28.2
0.12
0.039
28.27
-3.45
-3.89

JX








•
JY
32.7
33.3
32.7
0.35
0.118
32.90
-0.77
-1.21

K
37.9
35.2
38.4
1.72
0.630
37.17
1.69
1.25

KH
34.2
34.5
34.1
0.21
0.079
34.27
0.02
-0.42

KL








•
L
34.5
38.1
37.3
1.89
0.709
36.63
1.38
0.94

LB
17.0
13.0
13.0
2.31
0.788
14.33
-11.49
-11.93
X
LG








•
LH
36.0
36.0
36.0
0.00
0.000
36.00
1.02
0.58

LM
46.2
46.4
46.8
0.30
0.118
46.47
7.06
6;62
X
LS
13.1
13.8
12.1
0.85
0.335
13:00
-12.26
-12,70
X
LT
25.4
25.4
25.1
0.17
0.059
25.30
-5.16
-5.60

LZ
34.7
34.9
34.4
0.25
0.098
34.67
0.25
-0.19

M








•
MN








•
• =
No data submitted

TAG SYMBOLS

IT 3 Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
s Below control limit
	y
-------
6/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994
	^
Uranium (Natural)







Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
MY








•
N








•
NA
32.0
33.0
34.0
1.00
0.394
33.00
-0.71
-1.15

NH
37.0
37.4
36.6
0.40
0.158
37.00
1.60
1.15

NJ
35.0
34.0
33.5
0.76
0.295
34.17
-0.04
-0.48

NK
33.9
33.4
34.1
0.36
0.138
33.80
-0.25
-0.69

NO
32.8
36.0
39.7
3.45
1.683
36.17
1.11
0.67

NT
25.0
26.6
27.7
1.36
0.532
26.43
-4.51
-4.95

OB
29.4
29.8
29.2
0.31
0.118
29.47
-2.75
-3.19

OF








•
OS
31.0
32.0
34.0
1.53
0.591
32.33
-1.10
-1.54

OX
31.1
31.1
29.6
0.87
0.295
30.60
-2.10
-2.54

OY
25.6
26.0
2,6.3
0.35
0.138
25.97
-4.77
-5.22

OZ








•
P
32.1
29.7
34.6
2.45
0.965
32.13
-1.21
-1.66

PB
35.4
35.4
35.2
0.12
0.039
35.33
0.63
0.19

PC
11.9
13.0
14.0
1.05
0.413
12.97
-12.28
-12.72
X
PG
32.6
33.4
33.7
0.57
0.217
33.23
-0.58
-1.02

PP








•
PQ
35.2
34.5
35.1
0.38
0.138
34.93
0.40
-0.04

PT
25.5
26.9
25.3
0.87
0.315
25.90
-4.81
-5.25

PV
46.2
41.2
33.2
6.56
3.971
40.20
3.44
3.00

PW
29.0
33.4
36.4
3.72
1.870
32.93
-0.75
-1.19

PX
39.0
40.0
39.9
0.55
0.197
39.63
3.12
2.68

PY








•
Q
47.9
38.1
30.4
8.77
5.658
38.80
2.63
2.19

QB
18.5
18.5
18.1
0.23
0.079
18.37
-9.16
-9.60
X
QJ








•
QM
36.3
37.0
37.5
0.60
0.236
36.93
1.56
1.12

QQ
34.8
34.0
33.2
0.80
0.315
34.00
-0.14
-0.58

QU
19.9
20.2
21.8
1.02
0.374
20.63
-7.85
-8.29
X
QX
20.3
20,9
20.6
0.30
0.118
20.60
-7.87
-8.31
X
QY
33.8
33.6
33.4
0.20
0.079
33.60
-0.37
-0.81

QZ
43.0
44.5
43.8
0.75
0.295
43.77
5.50
5.06
ir
R
27.3
28.1
27.8
0.40
0.158
27.73
-3.75
-4.20
u
RA
32.0
32.3
32.5
0.25
0.098
32.27
-1.14
-1.58

RC
33.3
35.8
36.4
1.64
0.610
35.17
0.54
0.10

RD
31.9
30.9
30.9
0.58
0.197
31.23
-1.73
-2.17

RF
30.7
30.4
32.6
1.19
0.433
31.23
-1.73
-2.17

RG
36.1
36.3
36.8
0.36
0.138
36.40
1.25
0.81

RK
43.6
37.8
40.7
2.90
1.270
40.70
3.73
3.29
it
RL
29.2
34.2
27.5
3.48
1.608
30.30
-2.27
-2.71

RM
31.7
31.3
35.6
2.38
0.847
32.87
-0.79
-1.23

RP
36.8
37.0
37.1
0.15
0.059
36.97
1.58
1.14

RR
35.5
35.4
35.7
0.15
0.059
35.53
0.75
0.31

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
1 0 H
\v	
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
	4/
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 7/23
Uranium (Natural)
Lab Res. 1 Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RV
33.0
34.8
35.1
1.14
0.413
34.30
0.04
-0.40
RW
33.6
32.6
32.1
0.76
0.295
32.77
-0.85
-1.29
RX
37.0
33.0
38.0
2.65
0.984
36.00
1.02
0.58
RZ
36.3
37.1
37.4
0.57
0.217
36.93
1.56
1.12
S
31.8
31.6
31.3
0.25
0.098
31.57
-1.54
-1.98
sc
37.5
36.4
34.4
1.57
0.610
36.10
1.08
0.64
SD
38.2
38.5
37.8
0.35
0.138
38.17
2.27
1.83
SF
33.5
33.5
33.5
0.00
0.000
33.50
-0.43
-0.87
SI
31.9
31.6
31.8
0.15
0.059
31.77
-1.43
-1.87
SL
33.9
34.5
32.9
0.81
0.315
33.77
-0.27
-0.71
SM
40.1
38.9
40.4
0.79
0.295
39.80
3.21
2.77
SO
35.8
34.0
30.2
2.86
1.195
33.33
-0.52
-0.96
SS
32.8
32.7
31.2
0.90
0.315
32.23
-1.16
-1.60
ST
33.6
33.5
34.2
0.38
0.138
33.77
-0.27
-0.71
SW
28.2
35.3
35.9
4.28
1.983
33.13
-0.64
-1.08
sx
40.9
34.9
37.7
3.00
1.345
37.83
2.08
1.64
sz
T
31.1
31.7
32.6
0.75
0.295
31.80
-1.41
-1.85
TA
36.0
37.4
36.5
0.71
0.276
36.63
1.38
-
0.94
TD
31.9
29.2
22.1
5.06
2.771
27.73
-3.75
-4.20
TE
30.5
38.5
34.5
4.00
2.095
34.50
0.15
-0.29
TH
30.0
32.0
34.0
2.00
0.788
32.00
-1.29
-1.73
TI
34.2
34.1
34.2
0.06
0.020
34.17
-0.04
-0.48
TL







•
TN







•
TP
34.5
34.2
34.3
0.15
0.059
34.33
0.06
-0.38
TQ
33.6
33.1
33.7
0.32
0.118
33.47
-0.44
-0.89
TS







•
TU
36.9
35.9
40.6
2.48
0.925
37.80
2.06
1.62
U
36.4
36.1
37.3
0.62
0.236
36.60
1.36
0,92
UE
31.3
33.2
32.3
0.95
0.374
32.27
-1.14
-1.58
UI
34.2
36.4
33.5
1.51
0.571
34.70
0.27
-0.17
UL








UN
31.0
31.2
33.1
1.16
0.413
31.77
-1.43
-1.87
UP
27.5
27.4
28.1
0.38
0.138
27.67
-3.79
-4.23 U
UQ







•
US







•
uw
32.3
33.9
33.5
0.83
0.315
33.23
-0.58
-1.02
uz
17.6
19.0
20.3
1.35
0.532
18.97
-8.82
-9.26 x
VG
38.8
38.7
39.1
0.21
0.079
38.87
2.67
2.23
VH







*
VI







•
VK







•
VL







•
VT







•
• = No data submitted	TAG SYMBOLS	It = Above control limit
25 = Insufficient data	x = Determined to be an outlier	II = Below control limit
^		JJ
-------
rf	—^
8/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994
Uranium (Natural)
Exper. Rng anal	• Normalized deviation
Lab Res. 1	Res. 2	Res. 3	Sigma (R + SR) Average (grand-avg) (known) Tag
W	•
W	34.8 37.2 38.5 1.88 0.728 36.83 1.50 1.06
WA	•
WB	•
X	39.0 38.3 35.8 1.68 0.630 37.70 2.00 1.56
Y	•
Z	31.9 31.3 29.6 1.19 0.453 30.93 -1.91 -2.35
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.00
X
BL
31.80

SZ
34.27

KH
12.97
X
PC
31.90

CA
34.30

RV
13.00
X
LS
31.90

*J HI
34.33

TP
14.33
X
LB
32.00

TH
34.37

DO
18.37
X
QB
32.10

C
34.40

JK
18.97
X
UZ
32.13

P
34.40

BG
20.60
X
QX
32.23

ss
34.43

BC
20.63
X
QU
32.27

UE
34.50

TE
25.30
u
LT
32.27

RA
34.63

CS
25.90
II
PT
32.33

OS
34.67

LZ
25.97
u
OY
32.77

RW
34.67

J
26.43
u
NT
32.87

RM
34.70

UI
27.50
u
BN
32.90

JY
34.83

JP
27.67
u
UP
32.93

PW
34.83

HP
27.73
II
R
33.00

NA
34.83

DE
27.73
II
TD
33.13

sw
34.90

AK
28.27
II
JS
33.17

AP
34.90

CG
28.83
II
DZ
33.20

IE
34.93

PQ
29.13
II
AW
33.23

UW
35.00

FZ
29.47
II
OB
33.23

PG
35.10

GO
30.17

AR
33.33

so
35.10

AF
30.30

RL
33.47

TQ
35.17

RC
30.30

I
33.50

SF
35.23

AJ
30.50

HE
33.60

QY
35.27

D
30.60

OX
33.77

ST
35.30

AE
30.63

E
33.77

SL
35.33

PB
30.93

Z
33.77

CM
35.40

HL
31.03

FN
33.80

NK
35.53

RR
31.23

RF
33.80

BH
35.77

GQ
31.23

RD
33.87

CK
35.90

BO
31.47

BG
33.87

BM
36.00

RX
31.57

S
34.00

QQ
36.00

LH
31.73

BK
34.17

TI
36.10

SC
31.77

UN
34.17

NJ
36.17

NO
31.77

SI
34.17

CE
36.27

AZ
• = No data submitted
0 = Insufficient data

TAG SYMBOLS
x ~ Determined to be an outlier
It
II
= Above control limit
s Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 9/23
Uranium (Natural)
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
36.33

DB
37.00

NH
38.93

AL
36.40

RG
¦ 37.17

K
39.00

BG
36.60

U
37.33

EB
39.07

AA
36.63

TA
37.70

X
39.50

A
36.63

L
37.80

TU
39.63

PX
36.70

GN
37.83

sx
39.80

SM
36.83

W
38.17

SD
40.10

FJ
36.83

HK
38.40

DT
40.20

PV
36.93

RZ
38.67

CX
40.37
IT
ID
36.93

QM
38.67

CJ
40.70

RK
36.93

BA
38.80

Q
43.77
11
QZ
36.97

RP
38.87

VG
46.47
X
LM
responding labs	Frequency distribution

"1—¦—I ¦¦¦¦ I	~T	,	T	,
*6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
responding labs	Frequency distribution
-MfMm
-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
• s No data submitted	TAG SYMBOLS	It a Above control limit
0 = Insufficient data	x = Determined to be an outlier	Ji = Below control limit
v*	-y
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 10 / 23
Radium-226
Statistical Summary
184 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 1.5; the control limits
are 7.4 to 12.6; the warning regions are 7.4 to 8.3 and 11.7 to 12.6
60(32.6 %) Failed to respond ,
95(51.6 %) Within all limits
8(4.3 %) Outliers jgggpr
9(4.9 %) Out of control •"
but not an outlier ^^CT~r~r--r
^-CLL I
Statistic
11
Respondents
--- 12(6.5 %) In warning zone
but within control
Non-outliers
Mean
10.36
Grand Avg 9.92
Std. Dev.
2.76
1.31
Variance
7.62
1.70
% Coef. of Var.
26.64
13.15
% deviation of mean from known value
3.59
-0.76
Norm. dev. of mean from known value
0.13
-0.06
Median
10.05
9.97
% deviation of median from known value
0.50
-0.33
Norm. dev. of median from known value
0.02
-0.03
18(14.5 %) More than 3 norm. S.D. »
13(10.5 %) Between 2 and
70(56.5 %) Within 1 norm. S.D.
of known value
23(18.5 %) Between 1 and 2 norm. S.D.
-------
/.			¦ 		
11/23 EMSL-LV Performance Evaluation:
\
Uranium-Radium in Water, 16-Sep-1994
	^
r
Radium-226








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
10.6
10.0
9.9
0.38
0.276
10.17
0.28
0.19

AA








•
AE
9.6
9.6
9.4
0.12
0.079
9.53
-0.45
-0.54

AF
9.2
9.5
9.2
0.17
0.118
9.30
-0.72
-0.81

AH








•
AI








• .
AJ
5.0
13.2
17.2
6.22
8.246
11.80
2.17
2.08

AK
10.7
9.9
9.8
0.49
0.354
10.13
0.24
0.15

AL
9.5
9.7
10.7
0.64
0.473
9.97
0.05
-0.04

AP
10.0
10.1
9.3
0.44
0.315
9.80
-0.14
-0.23

AU
8.7
10.0
8.5
0.81
0.591
9.07
-0.99
-1.08

AW
9.6
9.0
9.8
0.42
0.315
9.47
-0.53
-0.62

AZ
8.6
9.6
11.5
1.47
1.270
9.90
-0.03
-0.12

BA
8.8
8.3
8.4
0.26
0.197
8.50
-1.64
-1.73

BB








•
BC
11.3
11.1
10.8
0.25
0.197
11.07
1.32
1.23

BG








. •
BH
9.0
10.6
9.1
0.90
0.630
9.57
-0.41
-0.50

BK
9.6
9.8
10.0
0.20
0.158
9.80
-0.14
-0.23

BL








•
BM
8.0
7.8
8.3
0.25
0.197
8.03
-2.18
-2.27

BN
10.1
10.0
10.3
0.15
0.118
10.13
0.24
0.15

BO
9.2
9.2
9.5
0.17
0.118
9.30
-0.72
-0.81

C
10.6
10.8
11.0
0.20
0.158
10.80
1.01
0.92

CA
9.8
10.3
10.3
0.29
0.197
10.13
0.24
0.15

CC








•
CE
9.7
9.6
10.5
0.49
0.354
9.93
0.01
-0.08

CG
9.6
10.5
11.2
0.80
0.630
10.43
0.59
0.50

CJ
11.0
11.0
10.0
0.58
0.394
10.67
0.86
0.77

CK
8.9
8.7
8.9
0.12
0.079
8.83
-1.26
-1.35

CM









CO








•
cs
10.9
10.4
8.1
1.49
1.195
9.80
-0.14
-0.23

cx








O
D








•
DB
8.8
8.8
9.4
0.35
0.236
9.00
-1.07
-1.15

DE
10.3
10.3
10.2
0.06
0.039
10.27
0.40
0.31

DO








•
DP








•
DT
11.1
11.8
11.2
0.38
0.276
11.37
1.67
1.58

DZ
11.6
10.4
11.3
0.62
0.473
11.10
1.36
1.27

E
9.5
10.0
10.1
0.32
0.236
9.87
-0.07
-0.15

EB
9.5
10.3
10.6
0.57
0.433
10.13
0.24
0.15

EH








*
EO
9.7
10.7
10.2
0.50
0.394
10.20
0.32
0.23

• =
No data submitted

TAG SYMBOLS

It = Above control limit
0 =
Insufficient data
X s
Determined to be an outlier
= Below control limit
	
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 12 / 23
r 	
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EP
10.1
10.2
10.7
0.32
0.236
10.33
0.47
0.38

ER








•
FE
10.3
9.3
11.0
0.85
0.669
10.20
0.32
0.23

FJ








«
FN
14.1
12.5
12.8
0.85
0.630
13.13
3.71
3.62
rr
FP









FZ
12.3
110
1.0.5
0.93
0.709
11.27
1.55
1.46
GG








•
GN
9.7
9.8
9.6
0.10
0.079
9.70
-0.26
-0.35

GO
9.1
10.0
9.4
0.46
0.354
9.50
-0.49
-0.58

GQ
7.2
6.9.
6.6
0.30
0.236
6.90
-3.49
-3.58

HE
10.6
10.8
10.6
0.12
0.079
10.67
0.86
0.77

HK
10.4
10.7
10.1
0.30
0.236
10.40
0.55
0.46

HL
8.6
8.6
8.6
0.00
0.000
8.60
-1.53
-1.62

HP
16.8
16.3
16.4
0.32
0.236
16.17
721
7.12
X
HU








•
I
10.5
9.7
10.5
0.46
0.315
10.23
0.36
0.27

IA









ID
8.3
8.1
8.1
0.12
0.079
8.17
-2.03
-2.12

IE








•
J
9.3
10.0
9.8
0.36
0.276
9.70
-0.26
-0.35

JE
11.5
12.5
11.6
0.55
0.394
11.87
2.24
2.16

JG
8.0
10.3
7.1
1.65
1.495
8.47
-1.68
-1.77

JK








9
JN








9
JP









JS
8.3
94
11.3
1.52
1.345
9.67
-0.30
-0.38

JX
11.2
10.4
10.2
0.53
0.394
10.60
0.78
0.69

JY
11.2
10.9
11.8
0.46
0.354
11.30
1.59
1.50

K
8.3
6.3
7.2
1.00
0.788
7.27
-3.07
-3.16

KH
10.3
9.7
10.3
0.35
0.236
10.10
0.20
0.12

KL
11.2
12.4
9.7
1.35
1.120
11.10
1.36
1.27

L
11.1
11.8
11.4
0.35
0.276
11.43
1.74
1.66

LB
11.4
11.9
11.9
0.29
0.197
11.73
2.09
2.00

LG








•
LH








•
LM








•
LS
1.0
2.0
3.0
1.00
0.788
2.00
-9.15
-9.24
X
LT
9.3
9.9
10.2
0.46
0.354
9.80
-0.14
-0.23

LZ
10.2
10.4
10.3
0.10
0.079
10.30
0.43
0.35

M
8.7
8.9
9.0
0.15
0.118
8.87
-1.22
-1.31

MN








• -
MY
28.5
26.2
30.3
2.06
2.170
28.33
21.26
21*17
X
N








•
NA








•
• =
0 =
v	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft 3 Above control limit
11 = Below control limit
'J
-------
13/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
NH








•
NJ
16.5
15.4
16.8
0.74
0.551
16.23
7.29
7.20
X
NK








•
NO
10.0
10.5
11.0
0.50
0.394
10.50
0.67
0.58

NT
10.4
10.7
11.0
0.30
0.236
10.70
0.90
0.81

OB
10.3
10.3
10.2
0.06
0.039
10.27
0.40
0.31

OF
7.7
8.2
8.2
0.29
0.197
8.03
-2.18
-2.27

OS








•
OX
10.5
10.7
10.2
0.25
0.197
10.47
0.63
0.54

OY
9.5
9.2
9.9
0.35
0.276
9.53
-0.45
-0.54

OZ








•
P
9.9
10.4
9.5
0.45
0.354
9.93
0.01
-0.08

PB
10.6
10.6
10.5
0.06
0.039
10.57
0.74
0.65

PC
7.2
8.0
9.0
0.90
0.709
8.07
-2.14
-2.23

PG
10.9
12.1
10.9
0.69
0.473
11.30
1.59
1.50

PP








•
PQ








•
PT
9.5
9.7
9.6
0.10
0.079
9.60
-0.37
-0.46

PV
10.8
10.1
8.1
1.40
1.120
9.67
-0.30
-0.38

PW
7.1
7.5
7.6
0.26
0.197
7.40
-2.91
-3.00

PX
8.0
10.0
10.1
1.18
0.827
9.37
-0.64
-0.73

FY








•
Q
13.3
12.5
12.8
0.40
0.315
12.87
3.40
3.31
tr
QB
9.0
8.5
8.9
0.26
0.197
8.80
-1.30
-1.39

QJ








•
QM
9.8
9.6
9.8
0.12
0.079
9.73
-0.22
-0.31

QQ








•
QU
9.3
10.3
11.4
1.05
0.827
10.33
0.47
0.38

QX
11.7
10.1
13.4
1.65
1.570
11.73
2.09
2.00

QY
10.3
10.2
9.9
0.21
0.158
10.13
0.24
0.15

QZ
10.5
9.7
9.7
0.46
0.315
9.97
0.05
-0.04

R
7.3
7.4
7.9
0.32
0.236
7.53
-2.76
-2.85

RA
9.3
10.6
10.7
0.78
0.551
10.20
0.32
0.23

RC
10.0
10.0
11.0
0.58
0.394
10.33
0.47
0.38

RD
10.8
11.6
10.2
0.70
0.551
10.87
1.09
1.00

RF
13.7
15.0
16.5
1.40
1.195
15.07
5.94
5.85
X
RG








•
RK
17.0
15.0
17.0
1.15
0.788
16.33
7.40
7.31
X
RL








•
RM
10.5
9.9
9.4
0.55
0.433
9.93
0.01
-0.08

RP








•
KR








•
RV
10.3
9.0
9.7
0.65
0.512
9.67
-0.30
-0.38

RW
9.4
10.4
10.2
0.53
0.394
10.00
0.09
0.00

RX
10.0
11.0
12.0
1.00
0.788
11.00
1.24
1.15

• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II = Below control limit
-------

EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 14 / 23
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RZ
9.5
9.4
9.5
0.06
0.039
9.47
-0.53
-0.62

S
9.9
9.9
9.8
0.06
0.039
9.87
-0.07
-0.15

sc
10.6
11.0
10.3
0.35
0.276
10.63
0.82
0.73

SD
10.2
10.0
10.7
0.36
0.276
10.30
0.43
0.35

SF
10.2
10.3
10.4
0.10
0.079
10.30
0.43
0.35

SI
9.0
7.8
5.8
1.62
1.495
7.53
-2.76
-2.85

SL








•
SM
6.7
7.1
7.7
0.50
0.394
7.17
-3.18
-3.27

SO








•
ss
8.8
10.3
9.0
0.81
0.591
9.37
-0.64
-0.73

ST
9.6
9.9
9.6
0.17
0.118
9.70
-0.26
-0.35

SW








•
sx
8.0
9.7
10.0
1.08
0.788
9.23
-0.80
-0.89

sz
T
8.0
9.0
10.0
1.00
0.788
9.00
-1.07
-1.15

M.
TA
5.0
6.7
7.8
1.41
1.195
6.50
-3.95
-4.04
•
TD
23.4
25.2
21.5
1.86
1.870
23.37
15.52
15.43
X
TE
11.4
12.5
12.0
0.55
0.433
11.97
2.36
2.27

TH
13.1
11.0
12.1
1.05
0.827
12.07
2.47
2.39

IT








•
TL








•
TN
13.0
14.9
14.0
0.95
0.748
13.97
4.67
4.58
tr
TP








•
TQ
9.1
9.6
10.0
0.45
0.354
9.57
-0.41
-0.50

TS








•.
TU
9.0
9.3
8.9
0.21
0.158
9.07
-0.99
-1.08

U
9.1
7.9
9.1
0.69
0.473
8.70
-1.41
-1.50

UE
11.1
11.7
11.0
0.38
0.276
11.27
1.55
1.46

UI
9.9
9.3
8.7
0.60
0.473
9.30
-0.72
-0.81

UL
6.7
6.8
7.5
0.44
0.315
7.00
-3.38
-3.46

UN
6.9
6.6
6.5
0.21
0.158
6.67
-3.76
-3.85
a
UP
10.0
10.5
11.0
0.50
0.394
10.50
0.67
0.58

UQ
9.9
10.0
10.0
0.06
0.039
9.97
0.05
-0.04

US








•
UW
9.9
8.7
10.9
1.10
0.866
9.83
-0.10
-0.19

UZ








m
VG
15.9
15.9
15.9
0.00
0.000
15.90
6.90
6.81
X
VH
10.3
11.9
9.9
1.06
0.788
10.70
0.90
0.81

VI








•
VK








•
VL








•
VT
12.2
12.2
13.3
0.64
0.433
12.57
3.05
2.96

W








•
W
9.4
10.2
9.9
0.40
0.315
9.83
-0.10
-0.19

WA
10.6
10.0
10.4
0.31
0.236
10.33
0.47
0.38

• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
U = Below control limit
-------
ft	








	^
15 / 23 EMSL-LV Performance Evaluation:
>¦
Uranium-Radium in Water,
16-Sep-1994

Radium-226








X




Exper.
Rng anal

Normalized deviation

Lab Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
WB








•
X 10.9
Y
Z
10.4
11.5
0.55
0.433
10.93
1.17 1.08
•
•


Data sorted by Laboratory Average


Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.00
X
LS

9.60

PT
10.30

SD
6.50

TA

9.67

RV
10.30

LZ
6.67

UN

9.67

PV
10.33

WA
6.90
u
GQ

9.67

JS
10.33

RC
7.00
li
UL

9.70

ST
10.33

QU
7.17
u
SM

9.70

J
10.33

EP
7.27
u
K

9.70

GN
10.40

HK
7.40

PW

9.73

QM
10.43

CG
7.53

SI

9.80

LT
10.47

OX
7.53

R

9.80

CS
10.50

UP
8.03

OF

9.80

BK
10.50

NO
8.03

BM

9.80

AP
10.57

PB
8.07

PC

9.83

W
10.60

JX
8.17

ID

9.83

uw
10.63

SC
8.47

JG

9.87

s
10.67

HE
8.50

BA

9.87

E
10.67

CJ
8.60

HL

9.90

AZ
10.70

VH
8.70

U

9.93

RM
10.70

NT
8.80

QB

9.93

P
10.80

C
8.83

CK

9.93

CE
10.87

RD
8.87

M

9.97

UQ
10.93

X
9.00

SZ

9.97

QZ
11.00

RX
9.00

DB

9.97

AL
11.07

BC
9.07

TU

10.00

RW
11.10

KL
9.07

AU

10.10

KH
11.10

DZ
9.23

sx

10.13

QY
11.27

UE
9.30

UI

10.13

AK
11.27

FZ
9.30

BO

10.13

EB
11.30

PG
9.30

AF

10.13

CA
11.30

JY
9.37

ss

10.13

BN
11.37

DT
9.37

PX

10.17

A
11.43

L
9.47

RZ

10.20

RA
11.73

QX
9.47

AW

10.20

FE
11.73

LB
9.50

GO

10.20

EO
11.80

AJ
9.53

OY

10.23

I
11.87

JE
9.53

AE

10.27

OB
11.97

TE
9.57

TQ

10.27

DE
12.07

TH
9.57

BH

10.30

SF
12.57

VT
• = No data submitted


TAG SYMBOLS

IT s Above control limit
0 = Insufficient data

X
= Determined to be an outlier
11 = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 16 / 23
Radium-226
Data sorted by Laboratory Average
Lab
Average
Tag
Lab
Average
Average	Tag
12.87	ft	Q
13.13	ft	FN
13.97	ft	TN
15.07
X
RF
15.90
X
VG
16.17
X
HP
Tag	Lab
16.23	x	NJ
16.33	x	RK
23.37	x	TD
28.33	x	MY
% responding labs	Frequency distribution
10-
	 T	"T"	I, ¦¦Implllllllllf!¦! f¦¦	T ¦¦ ,	¦	,	
-6	-4	-2	0+2+4	+4
Normalized deviation of the mean from the known value
responding labs	Frequency distribution	
10-
-T-—"-*1
0	*2
-4	-2	0+2+4	+6
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	11 = Below control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 17 / 23
Radium-228
Statistical Summary
184 Participants
The known value of this nuclide is 10.2 pCi/1 with an expected precision of 2.6; the control limits
are 5.7 to 14.7; the warning regions are 5.7 to 7.2 and 13.2 to 14.7
75(40.8 %) Falted to respond
6(3.3 %) Outliers
4(2.2 %) Out of control
but not an outlier
Statistic
91(49.5 %) Within all limits
Respondents
---- 8(4.3 %) In warning zone
but within control
Non-outliers
Mean
11.15
Grand Avg 10.47
Std. Dev.
3.42
1.87
Variance
11.71
3.50
% Coef. of Var.
30.69
17.86
% deviation of mean from known value
9.31
2.63
Norm. dev. of mean from known value
0.28
0.14
Median
10.37
10.30
% deviation of median from known value
1.63
0.98
Norm. dev. of median from known value
0.05
0.05
10(9,2 %) More than 3 norm. S.D. »
8(7.3 %) Between 2 and 3 norm. S.D
69(63.3 %) Within 1 norm. S.D.
of Known value
22(20.2 %) Between 1 and 2 norm. S.D.
-------
f(	








	^
18 / 23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994

Radium-22 8








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
6.0
9.3
9.3
1.91
0.750
8.20
-1.51
-1.33

AA








•
AE
9.6
10.1
10.4
0.40
0.182
10.03
-0.29
-0.11

AF
10.4
10.4
10.3
0.06
0.023
10.37
-0.07
0.11

AH








•
AI
14.3







0
AJ
12.6
12.5
12.1
0.26
0.114
12.40
1.29
1.47

AK
9.8
10.2
10.4
0.31
0.136
10.13
-0.22
-0.04

AL
9.7
10.5
12.9
1.67
0.727
11.03
0.38
0.56

AP
9.6
10.5
11.3
0.85
0.386
10.47
0.00
0.18

AU
3.2
5.0
5.3
1.14
0.477
4.50
-3.98
-3.80
u
AW
9.5
9.0
9.3
0.25
0.114
9.27
-0.80
-0.62

AZ
8.5
8.5
8.2
0.17
0.068
8.40
-1.38
-1.20

BA
7.5
7.4
6.7
0.44
0.182
7.20
-2.18
-2.00

BB








•
BC
11.6
9.0
8.9
1.53
0.613
9.83
-0.42
-0.24

BG








•
BH
9.9
12.0
10.7
1.06
0.477
10.87
0.27
0.44

BK
14.4
13.4
12.5
0.95
0.432
13.43
1.98
2.15

BL








•
BM
11.7
10.3
12.8
1.25
0.568
11.60
0.75
0.93

BN








•
BO
9.9
9.0
12.0
1.54
0.682
10.30
-0.11
0.07

C
11.5
11.5
11.5
0.00
0.000
11.50
0.69
0.87

CA
9.9
9.7
9.7
0.12
0.045
9.77
-0.47
-0.29

CC








•
CE
11.2
11.4
10.5
0.47
0.204
11.03
0.38
0.56

CG
9.4
10.1
9.5
0.38
0.159
9.67
-0.53
-0.36

CJ
10.0
10.0
9.1
0.52
0.204
9.70
-0.51
-0.33

CK
10.8
10.1
10.6
0.36
0.159
10.50
0.02
0.20

CM








•
CO








•
cs
7.4
8.0
8.3
0.46
0.204
7.90
-1-71
-1.53

cx









D








•
DB
10.0
10.6
11.8
0.92
0.409
10.80
0.22
0.40

DE
10.6
10.7
10.8
0.10
0.045
10.70
0.15
0.33

DO








•
DP








~
DT
13.7
14.7
12.3
1.21
0.545
13.57
2.06
2.24

DZ
IT
11.3
11.9
11.3
0.35
0.136
11.50
0.69
0.87
a
A
EB
12.9
12.0
12.4
0.45
0.204
12.43
1.31
1.49
w
EH








•
EO
9.6
10.1
9.9
0.25
0.114
9.87
-0.40
-0.22

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U s Below control limit J
-V
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 19 / 23
Radium-228








Lab
Res. 1
Res. 2

Exper.
Rng anal
Average
Normalized deviation

Res. 3
Sigma
(R + SR)
(grand-avg)
(known) Tag
EP
10.2
9.9
10.0
0.15
0.068
10.03
-0.29
-0.11

ER









FE








*
FJ








•
FN
12.4
12.9
13.6
0.60
0.273
12.97
1.66
1.84

FP








•
FZ
12.1
10.4
14.8
2.22
1.000
12.43
1.31
1.49

GG








• '
GN








•
GO
11.5
9.4
10.2
1.06
0.477
10.37
-0.07
0.11

GQ
6.8
6.8
7.1
0.17
0.068
6.90
-2.38
-2.20

HE
9.5
9.8
9.2
0.30
0.136
9.50
-0.65
-0.47

HK
10.8
9.7
9.9
0.59
0.250
10.13
-0.22
-0.04

HL
8.5
8.5
8.5
0.00
0.000
8.50
-1.31
-1.13

HP
8.5
8.6
8.7
0.10
0.045
8.60
-1.24
-1.07

HU








•
I
9.6
7.5
10.7
1.63
0.727
9.27
-0.80
-0.62

IA









ID
8.8
8.3
8.8
0.29
0.114
8.63
-1.22
-1.04

IE








•
J
10.7
10.8
10.3
0.26
0.114
10.60
0.09
0.27

cJE
10.9
12.9
11.9
1.00
.0.454
11.90
0.95
1.13

JG
12.6
8.0
7.2
2.91
1.432
9.27
-0.80
-0.62

JK








•
JN








•
JP








•
JS
11.9
10.8
11.4
0.55
0.250
11.37
0.60
0.78

JX
9.0
9.1
8.9
0.10
0.045
9.00
-0.98
-0.80

JY
9.3
10.6
8.8
0.93
0.409
9.57
-0.60
-0.42

K
10.5
10.1
10.1
0.23
0.091
10.23
-0.16
0.02

KH
11.1
10.4
9.6
0.75
0.341
10.37
-0.07
0.11

KL
9.9
10.1
11.7
0.99
0.409
10.57
0.07
0.24

L
10.0
9.8
10.1
0.15
0.068
9.97
-0.33
-0.16

LB








•
LG








•
LH








*
LM








•
LS
12.0
10.0
11.0
1.00
0.454
11.00
0.35
0.53

LT
11.7
11.1
11.1
0.35
0.136
11.30
0.55
0.73

LZ








•
M
10.0
11.0
11.0
0.58
0.227
10.67
0.13
0.31

MN








*
MY








•
N








•
NA








•
• =
No data submitted

TAG SYMBOLS

1T = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
s Below control limit
-------
20 / 23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) 1
Tag
NH
9.6
9.3
9.2
0.21
0.091
9.37
-0.73
-0.56

NJ
11.2
10.6
11.2
0.35
0.136
11.00
0.35
0.53

NK








•
NO
8.9
9.7
11.4
1.28
0.568
10.00
-0.31
-0.13

NT
10.7
10.8
10.9
0.10
0.045
10.80
0.22
0.40

OB








•
OF
10.9
10.7
8.8
1.16
0.477
10.13
-0.22
-0.04

OS








•
OX
10.3
10.4
10.5
0.10
0.045
10.40
-0.05
0.13

OY








•
OZ








•
P
14.2
11.8
15.1
1.71
0.750
13.70
2.15
2.33

PB
10.4
10.0
10.2
0.20
0.091
10.20
-0.18
0.00

PC
15.2
16.0
17.1
0.95
0.432
16.10
3.75
3.93
ft
PG








•
PP








•
PQ








•
PT
9.7
10.4
9.4
0.51
0.227
9.83
-0.42
-0.24

PV
6.3
7.3
7.3
0.58
0.227
6.97
-2.33
-2.15

PW
9.5
9.0
9.7
0.36
0.159
9.40
-0.71
-0.53

PX








•
PY








•
Q
12.6
10.9
11.1
0.93
0.386
11.53
0.71
0.89

QB








•
QJ








•
QM








•
QQ








• '
QU
11.1
11.8
14.9
2.02
0.863
12.60
1.42
1.60

QX
13.1
9.7
9.2
2.12
0.886
10.67
0.13
0.31

QY








•
QZ
8.9
9.0
8.6
0.21
0.091
8.83
-1.09
-0.91

R









RA








' •
RC
24.2
23.0
23.5
0.60
0.273
23.57
8.73
8.90
X
RD
7.3
7.9
9.1
0.92
0.409
8.10
-1.58
-1.40

RF
11.7
12.0
12.0
0.17
0.068
11.90
0.95
1.13

RG








#
RK
25.5
25.9
25.1
0.40
0.182
25.50
10.01
10.19
X
RL








•
RM
11.2
10.3
12.8
1.27
0.568
11.43
0.64
0.82

RP








•
RR








•
RV
11.0
9.6
8.1
1.45
0.659
9.57
-0.60
-0.42

RW
10.7
10.8
11.0
0.15
0.068
10.83
0.24
0.42

RX
7.0
10.0
9.0
1.53
0.682
8.67
-1.20
-1.02

• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 s Below control limit
^:—	4
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 21 / 23
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
N
Normalized deviation
(grand-avg) (known) Tag
RZ
10.7
9.6
10.4
0.57
0.250
10.23
-0.16
0.02

S
8.9
8.0
9.4
0.71
0.318
8.77
-1.13
-0.95

sc
9.8
9.0
8.7
0.57
0.250
9.17
-0.87
-0.69

SD
13.7
12.8
10.9
1.43
0.636
12.47
1.33
1.51

SF
11.6
11.9
9.6
1.25
0.523
11.03
0.38
0.56

SI
11.8
11.5
11.5
0.17
0.068
11.60
0.75
0.93

SL









SM
6.5
6.8
5.0
0.96
0.409
6.10
-2.91
-2.73

SO








•
ss
9.2
10.8
9.1
0.95
0.386
9.70
-0.51
-0.33

ST
10.7
10.5
10.7
0.12
0.045
10.63
0.11
0.29

SW
12.0
12.9
12.3
0.46
0.204
12.40
1.29
1.47

sx
9.6
8.4
10.2
0.92
0.409
9.40
-0.71
-0.53

SZ
T
12.5
12.5
12.6
0.06
0.023
12.53
1.38
1.55

A
TA
11.1
12.4
13.9
1.40
0.636
12.47
1.33
1.51
'•
TD
30.4
20.3
29.0
5.47
3.466
26,57
i0.72
L0;90
X
TE
16.6
12.2
14.4
2.20
1.000
14.40
2.62
2.80

TH
20.4
18.6
19.6
0,90
0.409
19.50
b.U2

:*
TI









TL









TN
21.5
22.3
19.1
1.67
0.727
20.97
6.99
7.17

TP








•
TQ
8.5
10.3
10.7
1.17
0.500
9.83
-0.42
-0.24

TS








•
TU









U
10.6
8.1
10.6
1.44
0.568
9.77
-0.47
-0.29

UE
9.5
10.2
9.0
0.60
0.273
9.57
-0.60
-0.42

UI
13.4
13.2
13.3
0.10
0.045
13.30
1.89
2.07

UL








•
UN
8.7
9.8
10.5
0.91
0.409
9.67
-0.53
-0.36

UP
15.5
13.0
17.6
2.30
1.086
15.37
3.26
3.44
IT
UQ
11.0
11.0
10.0
0.58
0.227
10.67
0.13
0.31

US








_• -
UW
10.0
9.1
9.9
0.49
0.204
9.67
-0.53
-0.36
.
uz








•
VG
22.5
17.6
22.9
3.01
1.432
20.97
6.99
7.17
X
VH
10.8
9.1
10.5
0.91
0.386
10.13
-0.22
-0.04

VI








•
VK








_ •
VL
8.7
6.9
8.1
0.92
0.409
7.90
-1.71
-1.53

VT
13.0
16.1
19.3
3.15
1.821
16.13
3.77
3.95
tr
W








•
W
11.4
11.6
10.8
0.42
0.182
11.27
0.53
0.71

WA
8.9
11.0
9.9
1.05
0.477
9.93
-0.36
-0.18

• =
l0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
U s Below control limit
-------
22 / 23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994
> 	)
Radium-228
Exper. Rng anal	Normalized deviation
Lab Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
WB	"	~
X 12.9 13.8 9.4 2.32 1.000 12.03 1.04 1.22
Y •
Z			.
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
4.50

AU
9.83

PT
11.03

AL
6.10

SM
9.83

BC
11.03

SF
6.90

GQ
9.87

EO
11.27

W
6.97

PV
9.93

WA
11.30

LT
7.20

BA
9.97

L
11.37

JS
7.90

VL
10.00

NO
11.43

RM
7.90

CS
10.03

EP
11.50

DZ
8.10

RD
10.03

AE
11.50

C
8.20

A
10.13

OF
11.53

Q
8.40

AZ
10.13

HK
11.60

SI
8.50

HL
10.13

AK
11.60

BM
8.60

HP
10.13

VH
11.90

RF
8.63

ID
10.20

PB
11.90

JE
8.67

RX
10.23

RZ
12.03

X
8.77

S
10.23

K
12.40

sw
8.83

QZ
10.30

BO
12.40

AJ
9.00

JX
10.37

KH
12.43

FZ
9.17

SC
10.37

GO
12.43

EB
9.27

JG
10.37

AF
12.47

TA
9.27

I
10.40

OX
12.47

SD
9.27

AW
10.47

AP
12.53

SZ
9.37

NH
10.50

CK
12.60

QU
9.40

SX
10.57

KL
12.97

FN
9.40

PW
10.60

J
13.30

UI
9.50

HE
10.63

ST
13.43

BK
9.57

UE
10.67

UQ
13.57

DT
9.57

RV
10.67

QX
13.70

P
9.57

JY
10.67

M
14.40

TE
9.67

UW
10.70

DE
15.37
It
UP
9.67

UN
10.80

NT
16.10
ft
PC
9.67

CG
10.80

DB
16.13
ft
VT
9.70

SS
10.83

RW
19.50
X
TH
9.70

CJ
10.87

BH
20.97
X
VG
9.77

CA
11.00

NJ
20.97
X
TN
9.77

U
11.00

LS
23.57
X
RC
9.83

TQ
11.03

CE
25.50
26.57
X
X
RK
TD
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	U = Below control limit
V	—			y
-------
(r
EMSL-LV Performance Evaluation: Uranium-Radium in Water, 16-Sep-1994 23 / 23
Radium-228
% responding labs	Frequency distribution
10-
o
f-llTjlillfBlB—pw, ~ T
—I	1	I	I	T —¦ i ¦ T	I	I"
-6	-4-2	0+2+4+4
Normalized deviation of the mean from the known value
responding labs	Frequency distribution
10-
llf llll|llLjM|—T- - -
I	I	T	T	I	I	l	I	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-95/008
Environmental Protection	Development	January 1995
Agency	Washington, DC 20460
Radionuclides in Milk
Performance
Evaluation Study
A Statistical Evaluation of
the September 30, 1994 Data
0014rsd94.121a
-------
Radionuclides in Milk
Performance Evaluation Study
September 30, 1994
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 Radionuclides in Milk; September 30, 1994.
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.
.^inrorolv
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: Radionuclides in Milk, 30-Sep«1994 1/27
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 nnH 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 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.
-------
f	
2/27
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
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: Radionuclides in Milk, 30-Sep-1994 3/27
Strontium-89	Statistical Summary	113 Participants
The known value of this nuclide is 25.0 pCi/1 with an expected precision of 5.0; the control limits
are 16.3 to 33.7; the warning regions are 16.3 to 19.2 and 30.8 to 33.7
72(63.7 %) Failed to respond
1 (0.9 %) Outliers
5(4.4 %) Out of control
but not an outlier
Statistic
m. 29(25.7 %) Within all limits
Respondents
* 6(5.3 %) In warning zone
but within control
Non-outliers
Mean
22.63
Grand Avg 22.19
Std. Dev.
5.76
5.11
Variance
33.21
26.12
% Coef. of Var.
25.47
23.03
% deviation of mean from known value
-9.50
-11.23
Norm. dev. of mean from known value
-0.41
-0.55
Median
22.33
22.33
% deviation of median from known value
-10.67
-10.67
Norm. dev. of median from known value
-0.46
-0.52
7(17.1 %) More than 3 norm. S.D.»%
5(12.2 %) Between 2 and 3 norm. S.D. *
• 15(36.6 %) Within 1 norm. S.D.
of known value
• 14(34.1 %) Between 1 and 2 norm. S.D.
-------
4 / 27 EMSL-LV Performance Evaluation:
Radionuclides in Milk, 30-Sep-1994

r
Strontium-89








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
21.0
22.0
24.0
1.53
0.354
22.33
0.05
-0.92

AA








•
AE
30.0
31.0
30.0
0.58
0.118
30.33
2.82
1.85

AF








•
AI








t
AJ








«
AK
24.0
24.0
27.0
1.73
0.354
25.00
0.97
0.00

AL








•
AN








•
AP









AU
13.0
7.0
10.0
3.00
0.709
10.00
-4.22
-5.20

AY








«
BA
39.0
4o;o
41.0
L00
0.236
40.00
6.17
5.20
X
BC
12.0
13.0
11.0
1.00
0.236
12.00
-3.53
-4.50
I
BO








•
BH
23.0
22.0
21.0
1.00
0.236
22.00
-0.07
-1.04

BL
28.0
27.0
23.0
2.65
0.591
26.00
1.32
0.35

BM









BO
29.0
29.0
25.0
2.31
0.473
27.67
1.90
0.92

BW








•
C
23.0
22.0
22.0
0.58
0.118
22.33
0.05
-0.92

CA
22.0
25.0
22.0
1.73
0.354
23.00
0.28
-0.69

CJ
22.0
27.0
24.0
2.52
0.591
24.33
0.74
-0.23

CO








•-
CP









CQ








•J
D









DD









DE
22.0
23.0
23.0
0.58
0.118
22.67
0.16
-0.81

DL








•
DM








#
DT
23.0
21.0
22.0
1.00
0.236
22.00
-0.07
-1.04

DY








*
E
24.0
23.0
23.0
0.58
0.118
23.33
0.40
-0.58

EA








(
EB
22.0
26.0
24.0
2.00
0.473
24.00
0.63
-0.35

EH








•
EL
17.0
15.0
18.0
1.53
0.354
16.67
-1.91
-2.89

EX








•
FE
17.0
17.0
18.0
0.58
0.118
17.33
-1.68
-2.66

FL









OE









HP









HU
29.0
29.0
29.0
0.00
0.000
29.00
2.36
139

HX









• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U s Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 5/27
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
-v
Normalized deviation
(grand-avg) (known) Tag
I
IC







•
*-
IU







•
J
24.0
23.0
24.0
0.58
0.118
23.67
0.51
-0.46
JR







*
JS







•
K








KL







~
KX
17.0
23.0
21.0
3.06
0.709
20.33
-0.64
-1.62
L








LA







m
LE







•
LP'-







•
LM
17.0
15.0
17.0
1.15
0.236
16.33
-2.03
-3.00
LR








M







»
MA








ML







•
MP







*
MQ








MV








N
24.0
23.0
23.0
0.58
0.118
23.33
0.40
-0.58
NH







«
NJ
14.0
18.0
26.0
6.11
1.795
19.33
-0.99
-1.96
O







9
PB








PC
15.0
16.0
16.0
0.58
0.118
15.67
-2.26
-3.23
PI








PM







•
PP







•:
PT
23.0
28.0
24.0
2.65
0.591
25.00
0.97
0.00 ,
PV







1
~
PW








PY








Q
22.0
18.0
25.0
3.51
0.827
21.67
-0.18
-1.15
QB







•
QJ







•
QK
22.0
25.0
24.0
1.53
0.354
23.67
0.51
-0.46
QL
24.0
36.0
38.0
7.57
2.245
32.67
3.63
2.66
QX







•
QZ
16.0
19.0
19.0
1.73
0.354
18.00
-1.45
-2.42
R
22.0
22.0
22.0
0.00
0.000
22.00
-0.07
-i.04
RA







•
RK








S
17.0
16.0
15.0
1.00
0.236
16.00
-2.14
-3.12 li
hi «i
•
	—h
No data submitted
Insufficient data
X 5
TAG SYMBOLS
Determined to be an outlier
11" a Above control limit
U s Below control limit
-------
f	^
6/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Strontium-89



Exper. Rng anal
Normalized deviation
Lab Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
SM

i
SS 22.0 21.0 23.0 1.00 0.236 22.00 -0.07 -1.04
SV


T 23.0 23.0 18.0 2.89 0.591 21.33 -0.30 -1.27
TA


TD 20.0 23.0 29.0 4.58 1.120 24.00 0.63 -0.35
TE


TI

•
TP

•'
TQ 35.0 33.0 29.0 3.06 0.709 32.33 3.51 2.54
TS


U 14.0 12.0 14.0 1.15 0.236 13.33 -3.07 -4.04 U
UB

¦»
VG 29.0 28.0 28.0 0.58 0.118 28.33 2.13 1.15
VL 21.0 18.0 21.0 1.73 0.354 20.00 -0.76 -1.73
VM

•
VN

• '
VQ

'*>
vx


W 19.0 21.0 21.0 1.15 0.236 20.33 -0.64 -1.62
WA


WB

•
Y 29.0 27.0 29.0 1.15 0.236 28.33 2.13 1.15
Data sorted by Laboratory Average
Average Tag Lab
Average Tag Lab
Average Tag Lab
10.00 li AU
21.33 T
24.00 TD
12.00 II BC
21.67 Q
24.00 EB
13.33 U U
22.00 SS
24.33 CJ
15.67 U PC
22.00 R
25.00 PT
16.00 U S
22.00 DT
25.00 AK
16.33 LM
22.00 BH
26.00 BL
16.67 EL
22.33 C
27.67 BO
17.33 FE
22.33 A
28.33 Y
18.00 QZ
22.67 DE
28.33 VG
19.33 NJ
23.00 CA
29.00 HU
20.00 VL
23.33 N
30.33 AE
20.33 W
23.33 E
32.33 TQ
20.33 KX
23.67 QK
32.67 QL

23.67 J
40.00 x BA
• s No data submitted
TAG SYMBOLS
1T s Above control limit
r—M T «• _ «	1. J _ J	
v ^ __ AM mi ^ 1 i AV
JL =s Ralnw cnntrnl limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 7/27
Strontium-8 9
% responding labs		Frequency distribution
10-
a , m | liin yl
IjU
I	I	T	¦T,W"T	I	I ¦ |	|	| ¦ |
-6	-4	-2	0	+2	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
it
v, ¦ V iy ¦¦ iJ ifiii»i i vim, i
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 8/27
Strontium-90	Statistical Summary	113 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
63(55.8 %) Failed to respond
2(1.8 %) Outliers
Statistic
. 45(39.8 %) Within all limits
Respondents
•• 3(2.7 %) 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
15.70
3.74
13.96
23.80
4.67
0.19
15.50
3.33
0.13
Grand Avg 15.15
2.48
6.17
16.40
1.02
0.06
15.33
2.22
0.13
2(4.0 %) More than 3 norm. S.D.
3(6.0 %) Between 2 and 3 norm.
• 37(74.0 %) Within 1 norm. S.D.
of known value
8(16.0 %) Between 1 and 2 norm. S.D.
-------

9/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994

Strontium-90








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
15.0
0.58
0.118
15.67
0.18
0.23

AA
16.0
14.0
15.0
1.00
0.236
15.00
-0.05
0.00

AE
16.0
17.0
16.0
0.58
0.118
16.33
0.41
0.46

AF
17.0
17.0
16.0
0.58
0.118
16.67
0.52
0.58

AI








•
AJ








m
AK
i5.0
15.0
16.0
0.58
0.118
15.33
0.06
0.12

AL
17.0
16.0
17.0
0.58
0.118
16.67
0.52
0.58

AN









AP








•
AU
16.0
16.0
18.0
1.15
0.236
16.67
0.52
0.58

AY
16.0
16.0
16.0
0.00
0.000
16.00
0.29
0.35

BA
17.0
17.0
17.0
0.00
0.000
17.00
0.64
0.69

BC
21.0
2o:q;
17.0
2.08
0.473
19.33
1.45
1.50

BG
13.0
14.0
13.0
0.58
0.118
13.33
-0.63
-0.58

BH
14.0
14.0
13.0
0.58
0.118
13.67
-0.51
-0.46

BL
16.0
16.0
18.0
1.3.5
0.236
16.67
0.52
0.58

BM








. <
.»¦
BO
8.0
12.0
6.0
3.06
0.709
8.67
-2.25
-2.19

BW








a
C
17.0
16.0
17.0
0.58
0.118
16.67
0.52
0.58

CA
15.0
14.0
15.0
0.58
0.118
14.67
-0.17
-0.12

CJ
18.0
16.0
19.0
1.53
0.354
17.67
0.87
0.92

CO
12.0
12.0
15.0
1.73
0.354
13.00
-0.75
-0.69

CP








W,
CQ









D
18.0
19.0
18.0
0.58
0.118
18.33
1.10
1.15

DD








•
DE
16.0
17.0
17.0
0.58
0.118
16.67
0.52
0.58

DL









DM









DT
15.0
14.0
15.0
0.58
0.118
14.67
-0.17
-0.12

DY









E
16.0
16.0
16.0
0.00
0.000
16.00
0.29
0.35

EA








•
EB
15.0
14.0
16.0
1.00
0.236
15.00
-0.05
0.00

EH









EL
15.0
16.0
16.0
0.58
0.118
15.67
0.18
0.23

EX








•
FE
12.0
14.0
14.0
1.15
0.236
13.33
-0.63
-0.58

FL









GE








->•'
HP









HU
33.0
32.0
34.0
1.00
0.236
33.00
6.18
8.24
X
HX








•- •
• =
No data submitted

TAG SYMBOLS

It s Above control limit
<71 =
Tnmiffipipnt. Hnt.n
x =
Determined to he rifi outlier
11 s Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 10 / 27
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
I







•
IC







•
IU







•
J
16.0
17.0
16.0
0.58
0.118
16.33
0.41
0.46
JR








JS








K








KL








KX
15.0
15.0
14.0
0.58
0.118
14.67
-0.17
-0.12
L
16.0
17.0
17.0
0.58
0.118
16.67
0.52
0.58
LA








IJB







•
LF







»
LM







»
LR







•
M







•
MA







•
ML







•
MR







•
Mr







f,
M








N
14.0
14.0
14.0
0.00
0.000
14.00
-0.40
-0.35
NH







•
NJ
14.0
15.0
16.0
1.00
0.236
15.00
-0.05
0.00
O







t
PB







•
PC
19.0
20.0
20.0
0.58
0.118
19.67
1.56
1.62
PI








PM








PP








PT
13.0
14.0
14.0
0.58
0.118
13.67
-0.51
-0.46
PV
8.0
9.0
9.0
0.5ft
0.118
8.67
-2.25
-2.19
PW








PY







•
Q
21.0
16.0
17.0
2.65
0.591
18.00
0.99
1.04
QB







•,
QJ







•>
QK
16.0
16.0
17.0
0.58
0.118
16.33
0.41
0.46
QL
13.0
11.0
10.0
1.53
0.354
11.33
-1.32
-1.27
qx







•
QZ
12.0
12.0
12.0
0.00
0.000
12.00
-1.09
-1.04
R
15.0
15.0
15.0
0.00
0.000
15.00
-0.05
0.00
RA
13.0
12.0
12.0
0.58
0.118
12.33
-0.98
-0.92
RE







•
S
12.0
10.0
12.0
1.15
0.236
11.33
-1.32
-1.27
• = No data submitted	TAG SYMBOLS	It a Above control limit
[ 0 = Insufficient data	x = Determined to be an outlier	s Below control limit
-------
(	









	^
11/27
EMSL-LV Performance Evaluation:
Radionuclides in Milk, 30-Sep-1994
J
Strontium-90








\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
SM .










SS
16.0
16.0
16.0 0.00
0.000
16.00
0.29
0.35

8V









•
T
13.0
14.0
13.0 0.58
0.118
13.33
-0.63
-0.58

TA










TD
18.0
13.0
15.0 2.52
0.591
15.33
0.06
0.12

TE










TI









9-
TP










TQ
23 JO,
260
26.0 1;53
0.354
24.07
3i3G<
3.35
">fc
TS









/ •
U
13.0
12.0
11.0 1.00
0.236
12.00
-1.09
-1.04

TJB









•
VG
13.0
17.0
15.0 2.00
0.473
15.00
-0.05
0.00

VL
22.0
20.0
22.0 1.15
0.236
21.33
2.14
2.19

VM










VN










VQ









4
vx









i
w
14.0
16.0
14.0 1.15
0.236
14.67
-0.17
-0.12

WA









' *
WB









,
Y
16.0
16.0
16.0 0.00
0.000
16.00
0.29
0.35




Data sorted by Laboratory Averaj
fe



Average

Tag
Lab
Average
Tag
Lab
Average

Tag
Lab
8.67


PV
14.67

DT
16.33


AE
8.67


BO
14.67

CA
16.67


L
11.33


S
15.00

VG
16.67


DE
11.33


QL
15.00

R
16.67


C
12.00


U
15.00

NJ
16.67


BL
12.00


QZ
15.00

EB
16.67


AU
12.33


RA
15.00

AA
16.67


AL
13.00


CO
15.33

TD
16.67


AF
13.33


T
15.33

AK
17.00


BA
13.33


FE
15.67

EL
17.67


CJ
13.33


BG
15.67

A
18.00


Q
13.67


PT
16.00

Y
18.33


D
13.67


BH
16.00

SS
19.33


BC
14.00


N
16.00

E
19.67


PC
14.67


W
16.00

AY
21.33


VL
14.67


KX
16.33
16.33

QK
J
24.67
33.00

X
X
TQ
HU
• s No data submitted TAG SYMBOLS IT = Above control limit
k 0 = Insufficient data	x a Determined to be an outlier	II = Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 12 / 27
Strontium-90
%
10
0
%
10
0
responding labs	Frequency distribution
¥ i| IHpll f. ¦
'	I	I "	T	Tm m I 'm I m I	|	I *
*4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
responding labs	Frequency distribution
J_,	l	¦ ¦
-2	0	+2
93
I	I	I	I "I ~ T	T ""T*™ i ¦ I ¦ |	|	i
¦6	-4	-2	0	+2	+4	M
Normalized deviation of the mean from the grand average
-------
		 ^
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 13 / 27
Iodine-131	Statistical Summary	113 Participants
The known value of this nuclide is 75.0 pCi/1 with an expected precision of 8.0; the control limits
are 61.1 to 88.9; the warning regions are 61.1 to 65.7 and 84.3 to 88.9
27(23.9 %) Failed to respond \
8(7.1 %) Outliers •
1 (0.9 %) Out of control •
but not an outlier
Statistic
, 69(61.1 %) Within all limits
Respondents
-• 8(7.1 %) 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
86.93
77.56
6016.27
89.23
15.91
0.15
75.67
0.89
0.01
Grand Avg 74.89
5.58
31.16
7.45
-0.14
-0.02
75.17
0.22
0.03
9(10.5 %) More than 3 norm. S.D.
8(9.3 %) Between 2 and 3 norm. S.D.
51(59.3 %) Within 1 norm. S.D.
of known value
8(20.9 %) Between 1 and 2 norm. S.D.
-------
14/27
EMSL-LV Performance Evaluation:
Radionuclides in Milk, 30-Sep>1994

Iodine-131








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
68.0
71.0
77.0
4.58
0.665
72.00
-0.63
-0.65

AA
81.0
83.0
82.0
1.00
0.148
82.00
1.54
1.52

AE
77.0
66.0
67.0
6.08
0.812
70.00
-1.06
-1.08

AF
79.0
77.0
72.0
3.61
0.517
76.00
0.24
0.22

AI









AJ
79.0
80.0
76.0
2.08
0.295
78.33
0.74
0.72

AK
80.0
81.0
88.0
4.36
0.591
83.00
1.76
1.73

AL
47.0
42.0
27.0
10.41
1.908
38.67
-7.84
&87
"xr.
AN
70.0
73.0
69.0
2.08
0.295
70.67
-0.92
¦0.94

AP









AU
78.0
73.0
75.0
2.52
0.369
75.33
0.10
0.07

AY
79.0
82.0
78.0
2.08
0.295
79.67
1.03
1.01

BA
79.0
79.0
75.0
2.31
0.295
77.67
0.60
0.58

BC
79.0
119.0
970
20.03
4.721
98.33:
5:07
5.05
X
BG








BH
73.0
72.0
74.0
1.00
0.148
73.00
-0.41
-0.43

BL
78.0
79.0
82.0
2.08
0.295
79.67
1.03
1.01

BM
79.0
85.0
82.0
3.00
0.443
82.00
1.54
1.52

BO
73.0
77.0
77.0
2.31
0.295
75.67
0.17
0.14

BW








«
C
77.0
76.0
75.0
1.00
0.148
76.00
0.24
U.22

CA
78.0
75.0
75.0
1.73
0.222
76.00
0.24
0.22

CJ
86.0
75.0
84.0
5.86
0.812
81.67
1.47
1.44

CO
74.0
78.0
75.0
2.08
0.295
75.67
0.17
0.14

CP
79.0
75.0
75.0
2.31
0.295
76.33
0.31
0.29

CQ
71.0
76.0
72.0
2.65
0.369
73.00
-0.41
-0.43

D
72.0
79.0
83.0
5.57
0.812
78.00
0.67
0.65

DD
82.0
83.0
86.0
2.08
0.295
83.67
1.90
1.88

DE
77.0
78.0
78.0
0.58
0.074
77.67
0.60
0.58

DL
78.0
77.0
80.0
1.53
0.222
78.33
0.74
0.72

DM
72.0
71.0
72.0
0.58
0.074
71.67
. -0.70
-0.72

DT
70.0
82.0
72.0
6.43
0.886
74.67
-0.05
-0.07

DY
79.0
82.0
81.0
1.53
0.222
80.67
1.25
1.23

E
75.0
72.0
74.0
1.53
0.222
73.67
-0.27
-0.29

EA








•
EB
77.0
74.0
80.0
3.00
0.443
77.00
0.46
0.43

EH
88.0
76.0
76.0
6.93
0.886
80.00
1.11
1.08

EL
74.0
80.0
77.0
3.00
0.443
77.00
0.46
0.43

EX
68.0
65.0
68.0
1.73
0.222
67.00
-1.71
-1.73

FE








•
FL
86.0
79.0
84.0
3.61
0.517
83.00
1.76
1.73

GE
80.0
78.0
77.0
1.53
0.222
78.33
0.74
0.72

HP








•
HU
63.0
65.0
60.0
2.52
0.369
62.67
-2.65
-2.67

HX








j
• s No data submitted

TAG SYMBOLS

"IT = Above control limit
0 = Insufficient data
X s
Determined to be an outlier
U 3 Below control limit
-------
s\
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 15 / 27
Iodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
I
76.0
76.0
75.0
0.58
0.074
75.67
0.17
0.14

IC
72.0
69.0
76.0
3.51
0.517
72.33
-0.55
-0.58

IU
75.0
60.0
73.0
8.14
1.205
69.33
-1.20
-1.23

J
70.0
68.0
72.0
2.00
0.295
70.00
-1.06
-1.08

JR








•
JS
73.0
71.0
70.0
1.53
0.222
71.33
-0.77
-0.79

K
74.0
71.0
72.0
1.53
0.222
72.33
-0.55
-0.58

KL
77.0
74.0
74.0
1.73
0.222
75.00
0.02
0.00

KX
73.0
77.0
75.0
2.00
0.295
75.00
0.02
0.00

L
70.0
70.0
77.0
4.04
0.517
72.33
-0.55
-0.58

LA








9
LE









LF
75.0
73.0
70.0
2.52
0.369
72.67
-0.48
-0.51

LM









LR
t42;o
143.0
149.0
3.79
0.517
144.67
15.11
1508
;*
M
67.0
71.0
69.0
2.00
0.295
69.00
-1.28
-1.30

MA
77.0
78.0
72.0
3.21
0.443
75.67
0.17
0.14

ML
75.0
77.0
73.0
2.00
0.295
75.00
0.02
0.00

MP
63.0
62.0
62.0
0.58
0.074
62.33
-2.72
-2.74

MQ
74.0
66.0
73.0
4.36
0.591
71.00
-0.84
-0.87

MY








•
N
80.0
77.0
81.0
2.08
0.295
79.33
0.96
0.94

NH
76.0
74.0
80.0
3.06
0.443
76.67
0.38
0.36

NJ
65.0
70.0
73.0
4.04
0.591
69.33
-1.20
-1.23

O
74.0
75.0
74.0
0.58
0.074
74.33
-0.12
-0.14

PB
65.0
64.0
62.0
1.53
0.222
63.67
-2.43
-2.45

PC
117 0
126.0
137.0
10.02
1.908
126:67
11.21
11.19
X
PI
62.0
61.0
640
1.53
0.222
62.33
-2.72
-2.74

PM








•
PP








•>
PT
72.0
73.0
72.0
0.58
0.074
72.33
-0.55
-0.58

PV
62.0
62.0
70.0
4.62
0.591
64.67
-2.21
-2.24

PW
67.0
61.0
69.0
4.16
0.591
65.67
-2.00
-2.02

PY








«
Q
69.0
71.0
68.0
1.53
0.222
69.33
-1.20
-1.23

QB








% •
QJ
730.0
639.0
842.0
101.68
27.644
737.00
143.35
143.33
X
QK
78.0
78.0
81.0
1.73
0.222
79.00
0.89
0.87

QL
80.0
74.0






0
QX
76.0
75.0
78.0
1.53
0.222
76.33
0.31
0.29

QZ
86.0
76.0
75.0
6.08
0.812
79.00
0.89
0.87

R
74.0
72.0
74.0
1.15
0.148
73.33
-0.34
-0.36

RA








•
RK








. •
S
82.0
81.0
74.0
4.36
0.591
79.00
0.89
0.87

• s No data submitted	TAG SYMBOLS	It a Above control limit
: 0 = Insufficient data	x = Determined to be an outlier	U s Below control limit
^		'J
-------
,	











	X
16/27
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994

Iodine-131











Lab
Res. 1

Res. 2


Exper.
Rng anal


Normalized deviation


Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
SM
76.0

79.0
76.0
1.73
0.222
77.00
0.46
0.43

SS
96.0

109.0
103.0
6.51
0.960
102.67
6.01
5;99
X
sv
77.0

70.0
73.0
3.51
0.517
73.33
-0.34
-0.36

T
69.0

77.0
74.0
4.04
0.591
73.33
-0.34
-0.36

TA











•
TD
72.0

76.0
80.0
4.00
0.591
76.00
0.24
0.22

TE
90.0

89.0
87.0
1.53
0.222
88.67
2.98
2.96

IT
69.0

75.0
71.0
3.06
0.443
71.67
-0.70
-0.72

TP











•
TQ
68.0

70.0
80.0
6.43
0.886
72.67
-0.48
-0.51

TS











•
U
46.0

43.0
42;0
1.53
0.222
43.33
-6.83
-6.86
X
UB











•.
VO
343.0

343.0
343.0
0.00
0.000
343.00
58.05
58.02
X
VL
84.0

88.0
88.0
2.31
0.295
86.67
2.55
2.53

VM
75.0

80.0
67.0
6.56
0.960
74.00
-0.19
-0.22

VN











1
VQ











V> '
vx
91.0

91.0
91.0
0.00
0.000
91.00
3.49
3.46
ft
w
70.0

74.0
70.0
2.31
0.295
71.33
-0.77
-0.79

WA
70.0

67.0
71.0
2.08
0.295
69.33
-1.20
-1.23

WB











•
Y
77.0

76.0
76.0
0.58
0.074
76.33
0.31
0.29





Data sorted by Laboratory Averag
fe



Average

Tap

Lab
Average
Tag
Lab
Average
Tag
Lab
38.67

X

AL

71.33

JS

75.00

ML
43.33

X

U

71.67

TI

75.00

KX
62.33



PI

71.67

DM

75.00

KL
62.33



MP

72.00

A

75.33

AU
62.67



HU

72.33

PT

75.67

MA
63.67



PB

72.33

L

75.67

I
64.67



PV

72.33

K

75.67

CO
65.67



PW

72.33

IC

75.67

BO
67.00



EX

72.67

TQ

76.00

TD
69.00



M

72.67

LF

76.00

CA
69.33



WA

73.00

CQ

76.00

C
69.33



Q

73.00

BH

76.00

AF
69.33



NJ

73.33

T

76.33

Y
69.33



ru

73.33

SV

76.33

QX
70.00



J

73.33

R

76.33

CP
70.00



AE

73.67

E

76.67

NH
70.67



AN

74.00

VM

77.00

SM
71.00



MQ

74.33

O

77.00

EL
71.33



W

74.67

DT

77.00

EB
• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x s Determined to be an outlier	s Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 17 / 27
Iodine>131
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Ta«
Lab
77.67
DE
79.33
N
83.67

DD
77.67
BA
79.67
BL
86.67

VL
78.00
D
79.67
AY
88.67

TE
78.33
GE
80.00
EH
91.00
IT
VX
78.33
DL
80.67
DY
98.33
X
BC
78.33
AJ
81.67
CJ
102.67
X
SS
79.00
S
82.00
BM
126.67
X
PC
79.00
QZ
82.00
AA
144.67
X
LR
79.00
QK
83.00
FL
343.00
X
VG


83.00
AK
737.00
X
QJ
% responding labs

Frequency distribution



10-
°~S
, !¦¦¦ y
If lllilWilf—¦¥
-2	0	+
-4
*	-- — T 		r
-2	0	+2	+4
Normalized deviation of the mean from the known value
+6
% responding labs
Frequency distribution
10-
UJUL
ImAL.

-6
-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 5 Insufficient data	x = Determined to be an outlier	II = Below control limit
	's
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 18 / 27
Cesium-137	Statistical Summary	113 Participants
The known value of this nuclide is 59.0 pCi/1 with an expected precision of 5.0; the control limits
are 50.3 to 67.7; the warning regions are 50.3 to 53.2 and 64.8 to 67.7
18(15.9 %) Failed to respond
68(60.2 %) Within all limits
6(5.3 %) Outliers *' / nKT


5(4.4 %) Out of control'

"* 16(14.2 %) In warning zone
but not an outlier
I
i i
but within control
Statistic
Respondents
Non-outliers
Mean
62.32
Grand Avg 62.39
Std. Dev.
8.38
3.72
Variance
70.31
13.84
% Coef. of Var.
13.45
5.96
% deviation of mean from known value
5.63
5.74
Norm. dev. of mean from known value
0.40
0.91
Median
62.33
62.33
% deviation of median from known value
5.65
5.65
Norm. dev. of median from known value
0.40
0.90
11 (11.6 %) More than 3 norm. S.D.
16(16.8 %) Between 2 and 3 norm. S.D
30(31.6 %) Within 1 norm. S.D.
of known value
38(40.0 %) Between 1 and 2 norm. S.D.
VS=:
-------
(,	








	
19/27 EMSL-LV Performance Evaluation:
Radionuclides in Milk, 30-Sep-1994

Cesium-137








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
59.0
62.0
66.0
3.51
0.827
62.33
-0.02
1.15

AA
67.0
60.0
63.0
3.51
0.827
63.33
0.33
1.50

AE
61.0
66.0
63.0
2.52
0.591
63.33
0.33
1.50

AF
60.0
64.0
68.0
4.00
0.945
64.00
0.56
1.73

AI
70.0
62.0
61.0
4.93
1.120
64.33
0.67
1.85

AJ
60.0
63.0
64.0
2.08
0.473
62.33
-0.02
1.15

AK
68.0
68.0
68.0
0.00
0.000
68.00
1.94
3.12
It
AL
55.0
50.0
63.0
6.56
2.020
56.00
-2.21
-1.04

AN
57.0
58.0
58.0
0.58
0.118
57.67
-1.64
-0.46

AP








•
AU
59.0
63.0
60.0
2.08
0.473
60.67
-0.60
0.58

AY
67.0
63.0
57.0
5.03
1.345
62.33
-0.02
1.15

BA
63.0
61.0
62.0
1.00
0.236
62.00
-0.13
1.04

BC
64.0
55.0
63.0
4.93
1.120
60.67
-0.60
0.58

BG









BH
62.0
63.0
61.0
1.00
0.236
62.00
-0.13
1.04

BL
63.0
62.0
64.0
1.00
0.236
63.00
0.21
1.39

BM
65.0
68.0
65.0
1.73
0.354
66.00
1.25
2.42

BO
62.0
61.0
60.0
1.00
0.236
61.00
-0.48
0.69

BW
65.0
61.0
61.0
2.31
0.473
62.33
-0.02
1.15

C
61.0
62.0
63.0
1.00
0.236
62.00
-0.13
1.04

CA
62.0
61.0
61.0
0.58
0.118
61.33
-0.37
0.81

CJ
73.0
65.0
73.0
4.62
0.945
70.33
2.75
3.93
1t
CO
67.0
60.0
66.0
3.79
0.827
64.33
0.67
1.85

CP
60.0
61.0
59.0
1.00
0.236
60.00
-0.83
0.35

CQ
67.0
65.0
63.0
2.00
0.473
65.00
0.90
2.08

D
61.0
70.0
68.0
4.73
1.120
66.33
1.37
2.54

DD
66.0
66.0
66.0
0.00
0.000
66.00
1.25
2.42

DE
67.0
67.0
68.0
0.58
0.118
67.33
1.71
2.89

DL
60.0
59.0
58.0
1.00
0.236
59.00
-1.17
0.00

DM
63.0
63.0
62.0
0.58
0.118
62.67
0.10
1.27

DT
62.0
64.0
66.0
2.00
0.473
64.00
0.56
1.73

DY
65.0
67.0
65.0
1.15
0.236
65.67
1.14
2.31

E
61.0
62.0
61.0
0.58
0.118
61.33
-0.37
0.81

EA








•
EB
64.0
63.0
63.0
0.58
0.118
63.33
0.33
1.50

EH
59.0
58.0
57.0
1.00
0.236
58.00
-1.52
-0.35

EL
64.0
63.0
63.0
0.58
0.118
63.33
0.33
1.50

EX
60.0
63.0
61.0
1.53
0.354
61.33
-0.37
0.81

FE
65.0
63.0
59.0
3.06
0.709
62.33
-0.02
1.15

FL
65.0
63.0
64.0
1.00
0.236
64.00
0.56
1.73

GE
58.0
59.0
60.0
1.00
0.236
59.00
-1.17
0.00

HP
74.0
74.0
74.0
0.00
0.000
74.00
4.02
5.20
It
HU
48.0
50.0
47.0
1.63
0.354
48.33
-4.87
-3.70
X
HX









• =
No data submitted

TAG SYMBOLS

It = Above control limit
OS =
Tnanffirient Hntfl
x s
Determined to be an.outlier
U = Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 20 / 27
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
I
65.0
68.0
65.0
1.73
0.354
66.00
1.25
2.42

IC
69.0
66.0
67.0
1.53
0.354
67.33
1.71
2.89

IU
65.0
62.0
65.0
1.73
0.354
64.00
0.56
1.73

J
62.0
63.0
62.0
0.58
0.118
62.33
-0.02
1.15

JR









JS
56.0
59.0
55.0
2.08
0.473
56.67
-1.98
-0.81

K
72.0
63.0
60.0
6.24
1.795
65.00
0.90
2.08

KL
67.0
65.0
65.0
1.15
0.236
65.67
1.14
2.31

KX
61.0
61.0
59.0
1.15
0.236
60.33
-0.71
0.46

L
58.0
58.0
57.0
0.58
0.118
57.67
-1.64
-0.46

LA








•
LE
60.0
66.0
70.0
5.03
1.345
65.33
1.02
2.19

LF
62.0
59.0
63.0
2.08
0.473
61.33
-0.37
0.81

LM
68.0
64.0
67.0
2.08
0.473
66.33
1.37
2.54

LR
68.0
64.0
62.0
3.06
0.709
64.67
0.79
1.96

M
54.0
56.0
53.0
1.53
0.354
54.33
-2.79
-1.62

MA
60.0
62.0
63.0
1.53
0.354
61.67
-0.25
0.92

ML
66.0
61.0
60.0
3.21
0.709
62.33
-0.02
1.15

MP
51.0
52.0
52.0
0.58
0.118
51.67
-3.71
-2.54

MQ
62.0
59.0
62.0
1.73
0.354
61.00
-0.48
0.69

MV
71.0
73.0
72.0
1.00
0.236
72.00
3.33
4.50
IT
N
64.0
63.0
63.0
0.58
0.118
63.33
0.33
1.50

NH
59.0
58.0
58.0
0.58
0.118
58.33
-1.41
-0.23

NJ
61.0
63.0
61.0
1.15
0.236
61.67
-0.25
0.92

O
62.0
62.0
63.0
0.58
0.118
62.33
-0.02
1.15

PB
64.0
60.0
61.0
2.08
0.473
61.67
-0.25
0.92

PC
90.0
98.0
100.0
8.00
2.695
98.00
12134
13.5L
X
PI
77.0
78.0
79.0
1.00
0.236
78.00
5s41
6.58
K
PM









PP








•
PT
56.0
62.0
59.0
3.00
0.709
59.00
-1.17
0.00

PV
52.0
54.0
55^0
1.53
0.354
53.67
-3.02
-1.85

PW
67.0
63.0
68.0
2.65
0.591
66.00
1.25
2.42

PY









Q
59.0
61.0
63.0
2.00
0.473
61.00
-0.48
0.69

QB








•
QJ
59.0
62.0
64.0
2.52
0.591
61.67
-0.25
0.92

QK
58.0
59.0
57.0
1.00
0.236
58.00
-1.52
-0.35

QL
62.0
61.0






0
QX
71.0
64.0
69.0
3.61
0.827
68.00
1.94
3.12
It
QZ
58.0
61.0
70.0
6.24
1.795
63.00
0.21
1.39

R
62.0
63.0
63.0
0.58
0.118
62.67
0.10
1.27

RA
44.0
42.0
46.0
1.53
0.364
43.67
-6.49
-15;3I
X
RK








•
S
58.0
57.0
59.0
1.00
0.236
58.00
-1.52
-0.35

• =
0 S
^	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlieF
ft :.s
-------
	
21/27
EMSL-LV Performance Evaluation:
Radionuclides in Milk, 30-Sep-1994
	
Cesium-137











Lab
Res. 1




Exper.
Rng anal


Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SM
63.0

65.0
65.0
1.15
0.236
64.33
n «7
1.85

ss
92.0

87.0
87.0
2.89
0;591
88.67
9.10
10.28
X
sv
63.0

64.0
60.0
2.08
0.473
62.33
-0.02
1.15

T
59.0

59.0
57.0
1.15
0.236
58.33
-1.41
-0.23

TA











•
TD
62.0

66.0
64.0
2.00
0.473
64.00
0.56
1.73

TE
63.0

64.0
65.0
1.00
0.236
64.00
0.56
1.73

TI
65.0

64.0
61.0
2.08
0.473
63.33
0.33
1.50

TP











•
TQ
57.0

61.0
58.0
2.08
0.473
58.67
-1.29
-0.12

TS












U
58.0

61.0
60.0
1.53
0.354
59.67
-0.94
0.23

UB












VG
57.0

60.0
59.0
1.53
0.354
58.67
-1.29
-0.12

VL
63.0

63.0
62.0
0.58
0.118
62.67
0.10
1.27

VM
61.0

69.0
66.0
4.04
0.945
65.33
1.02
2.19

VN
9.0

11:0
13.0
2.00
0.473
11.00
-17;80
-1663
X
VQ











•
vx
68.0

68.0
64.0
2.31
0.473
66.67
1.48
2.66

w
55.0

64.0
66.0
5.86
1.570
61.67
-0.25
0.92

WA
54.0

53.0
57.0
2 08
0.473
54.67
-2.68
-1.50

WB











•
Y
64.0

60.0
63.0
2.08
0.473
62.33
-0.02
1.15





Data sorted by Laboratory Averaj
fe



Average

TaK

Lab
Average
Tag
Lab
Average Tag
Lab
11.00

X

VN

59.00

GE

62.00

C
43.67

X

RA

59.00

DL

62.00

BH
48.33

X

HU

59.67

U

62.00

BA
51.67



MP

60.00

CP

62.33

Y
53.67



PV

60.33

KX

62.33

SV
54.33



M

60.67

BC

62.33

0
54.67



WA

60.67

AU

62.33

ML
56.00



AL

61.00

Q

62.33

J
56.67



JS

61.00

MQ

62.33

FE
57.67



L

61.00

BO

62.33

BW
57.67



AN

61.33

LF

62.33

AY
58.00



S

61.33

EX

62.33

AJ
58.00



QK

61.33

E

62.33

A
58.00



EH

61.33

CA

62.67

VL
58.33



T

61.67

W

62.67

R
58.33



NH

61.67

QJ

62.67

DM
58.67



VG

61.67

PB

63.00

QZ
58.67



TQ

61.67

NJ

63.00

BL
59.00



PT

61.67

MA

63.33

TI
• s No data submitted


TAG SYMBOLS


It 3 Above control limit
n\ —

*



— I Ini nwvM A
,4


11 s D a1 /m
*r fiAnfrnl
limif
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 22/27
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
63.33

N
64.33

CO
66.33

LM
63.33

EL
64.33

AI
66.33

D
63.33

EB
64.67

LR
66.67

VX
63.33

AE
65.00

K
67.33

IC
63.33

AA
65.00

CQ
67.33

DE
64.00

TE
65.33

VM
68.00
ft
QX
64.00

TD
65.33

LE
68.00
ft
AK
64.00

IU
65.67

KL
70.33
ft
CJ
64.00

FL
65.67

DY
72.00
ft
MV
64.00

DT
66.00

PW
74.00
ft
HP
64.00

AF
66.00

I
78.00
X
PI
64.33

SM
66.00

DD
88.67
X
SS



66.00

BM
98.00
X
PC
% responding labs Frequency distribution
10--				

O-im,	¦	r—¦	r"—f	t
-6	-4	-2	0+2+4
Normalized deviation of the mean from the known value
responding labs	Frequency distribution
10-
531	< — i — J"" ~T	~ i — j
-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS IT a Above control limit
0 a TnAufficient data	x = Determined to be an outlier	U a Below control limit
-------
	 ^
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 23 / 27
Total Potassium
Statistical Summary
113 Participants
The known value of this nuclide is 1715.0 mg/1 with an expected precision of 86.0; the control limits
are 1565.8 to 1864.2; the warning regions are 1565.8 to 1615.4 and 1814.6 to 1864.2
36(31.9 %) Failed to respond »
3(2.7 %) Outliers
12(10.6 %) Out of control
but not an outlier
Statistic
. 52(46.0 %) Within all limits
Respondents
10(8.8 %) 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
1708.20
Grand Avg 1700.90
146.79
109.00
21546.07
11881.62
8.59
6.41
-0.40
-0.82
-0.05
-0.13
1702.67
1697.50
-0.72
-1.02
-0.08
-0.16
-------
24 / 27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994

Total Potassium







•v
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
1638.0
1513.0
1644.0
73.96
0.900
1598.33
-2.07
-2.35

AA
2080.0
2227.0
2150.0
73.53
1.018
2152,33
9.09
8:81
X
AE








•
AF
1698.0
1682.0
1633.0
33.87
0.446
1671.00
-0.60
-0.89

AI








V
AJ
1729.0
1702.0
1747.0
22.65
0.309
1726.00
0.51
0.22

AK
1583.0
1593.0
1564.0
14.73
0.199
1580.00
-2.43
-2.72

AL
1710.0
1640.0
1670.0
35.12
0.481
1673.33
-0.56
-0.84

AN
1760.0
1720.0
1730.0
20.82
0.275
1736.67
0.72
0.44

AP









AU
1700.0
1600.0
1590.0
60.83
0.756
1630.00
-1.43
-1.71

AY








. *'
BA
1724.0
1770.0
1712.0
30.62
0.398
1735.33
0.69
0.41

BC








•
BG








•
BH
1720.0
1750.0
1750.0
17.32
0.206
1740.00
0.79
0.50

BL
1776.0
1701.0
1662.0
57.94
0.783
1713.00
0.24
-0.04

BM
1800.0
1790.0
1850.0
32.15
0.412
1813.33
2.26
1.98

BO
1661.0
1699.0
1780.0
60.78
0.817
1713.33
0.25
-0.03

BW








•
C
1644.0
1673.0
1734.0
45.94
0.618
1683.67
-0.35
-0.63

CA
1730.0
1770.0
1810.0
40.00
0.549
1770.00
1.39
1.11

CJ
1910.0
1610.0
1700.0
153.95
3.020
1740.00
0.79
0.50

CO
1664.0
1691.0
1701.0
19.14
0.254
1685.33
-0.31
-0.60

CP









CQ
1528.0
1730.0
1717.0
113.06
1.738
1658.33
-0.86
-1.14

D
1766.0
1721.0
1698.0
34.59
0.467
1728.33
0.55
0.27

DD
1480.0
1530.0
1580.0
50.00
0.687
1530.00
-3.44
-3.73

DE
1530.0
1540.0
1550.0
10.00
0.137
1540.00
-3.24
-3.52

DL









DM
1630.0
1630.0
1700.0
40.41
0.481
1653.33
-0.96
-1.24

DT
1733.0
1719.0
1723.0
7.21
0.096
1725.00
0.49
0.20

DY
1701.0
1759.0
1759.0
33.49
0.398
1739.67
0.78
0.50

E
1741.0
1851.0
1808.0
55.43
0.756
1800.00
2.00
171

EA








o
EB








o
EH
1730.0
1670.0
1670.0
34.64
0.412
1690.00
-0.22
-0.50

EL
1731.0
1767.0
1759.0
18.90
0.247
1752.33
1.04
0.75

EX








~ '
FE
1610.0
1610.0
1620.0
5.77
0.069
1613.33
-1.76
-2.05

FL









GE








•
HP








•
HU
1266.0
122&0
1185.0
40.60
0.556
1225.33
9.58 <
-9.86
X,
HX








r
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 s
Insufficient data
X 3
Determined to be an outlier
U = Below control limit
-------
ft	
EMSL-LV Performance Evaluation:
Radionuclides in Milk, 30-Sep-1994 25/27
Total Potassium







\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
I
1725.0
1800.0
1906.0
90.94
1.463
1810.33
2.20
1.92

IC
1890.0
1866.0
1878.0
12.00
0.165
1878.00
3.57
3.28
It
IU
1713.0
1801.0
1720.0
48.91
0.604
1744.67
0.88
0.60

J
1724.0
1677.0
1714.0
24.76
0.323
1705.00
0.08
-0.20

JR








1
JS
1700.0
1691.0
1638.0
33.50
0.426
1676.33
-0.49
-0.78

K
1754.0
1577.0
1542.0
113.65
1.869
1624.33
-1.54
-1.83

KL
1629.0
1675.0
1649.0
23.07
0.316
1651.00
-1.00
-1.29

KX
1664.0
1711.0
1652.0
31.18
0.405
1675.67
-0.51
-0.79

L
1590.0
1640.0
1680.0
45.09
0.618
1636.67
-1.29
-1.58

LA









LE
1863.0
1892.0
1933.0
35.17
0.481
1896.00
3.93
3.65
IT
LF
1800.0
1700.0
1900.0
100.00
1.712
1800.00
2.00
1.71

LM
1646.0
1668.0
1614.0
27.15
0.371
1642.67
-1.17
-1.46

LR
1649.0
1799.0
1700.0
76.27
1.058
1716.00
0.30
0.02

M
1680.0
1680.0
1630.0
28.87
0.343
1663.33
-0.76
-1.04

MA
1874.0
1874.0
1811.0
36.37
0.433
1853.00
3.06
2.78

ML
1480.0
1510.0
1560.0
40.41
0.549
1516.67
-3.71
-3.99
U
MP








,• *
MQ
1664.0
1783.0
1661.0
69.59
0.838
1702.67
0.04
-0.25

MV
1984.0
1983.0
1992.0
4.93
0.062
1986.33
5.75
5.46
It
N
1873.0
1841.0
1865.0
16.65
0.220
1859.67
3.20
2.91

NH
1722.0
1870.0
1731.0
82.97
1.031
1774.33
1.48
1.19

NJ
1650.0
1650.0
1768.0
68.13
0.810
1689.33
-0.23
-0.52

O
1640.0
1640.0
1640.0
0.00
0.000
1640.00
-1.23
-1.51

PB
1573 0
1594.0
1604.0
15.82
0.213
1590.33
-2.23
-2.51

PC









PI









PM








••
PP








;>¦
PT
1423.0
1655.0
1655.0
133.95
2.130
1577.67
-2.48
-2.77

PV
1590.0
1600.0
1600.0
5.77
0.069
1596.67
-2.10
-2.38

PW
1925.0
1659.0
1864.0
139.34
2.575
1816.00
2.32
2.03

PY









Q
1685.0
1678.0
1583.0
56.98
0.701
1648.67
-1.05
-1.34

QB








•
QJ








- •'*
QK
1668.0
1694.0
1714.0
23.07
0.316
1692.00
-0.18
-0.46

QL
1683.0
1694.0
1700.0
8.62
0.117
1692.33
-0.17
-0.46

QX
1662.0
1674.0
1774.0
61.49
0.769
1703.33
0.05
-0.23

QZ








•
R
1708.0
1740.0
1730.0
16.37
0.220
1726.00
0.51
0.22

RA








•
RK








•
S
1687.0
1687.0
1690.0
1.73
0.021
1688.00
-0.26
-0.54

• S
No data submitted

TAG SYMBOLS

ft s Above control limit
0 3
Insufficient data
X 3
Determined to be an outlier
Ji a Below control limit
-7
-------
(f	







	N
26 / 27 EMSL-LV Performance Evaluation:
Radionuclides in Milk, 30-Sep-1994

r
Total Potassium










Exper.
Rng anal

Normalized deviation

Lab Res. 1
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
SM







•
SS 1846.0
1924.0
1863.0 41.02
0.536
1877.67 3.56
3.28
IT
SV 1437.0
1474.0
1632.0 103.57
1.646
1514.33 -3.76
-4.04

T 1620.0
1700.0
1570.0 65.57
0.893
1630.00 -1.43
-1.71

TA







•
TD 1619.0
1629.0
1604.0 12.58
0.172
1617.33 -1.68
-1.97

TE 1769.0
1770.0
1782.0 7.23
0.089
1773.67 1.47
1.18

TI 1774.0
1759.0
1764.0 7.64
0.103
1765.67 1.30
1.02

TP







•-
TQ 1562.0
1646.0
1729.0 83.50
1.280
1645.67 -1.11
-1.40

TS








U 1552.0
1564.0
1552.0 6.93
0.082
1556.00 -2.92
¦3.20

UB







• '
VG 1640.0
1760.0
1730.0 62.45
0.824
1710.00 0.18
-0.10

VL 1499.0
1473.0
1534.0 30.61
0.419
1502.00 -4.01
-4.29

VM 1773.0
1742.0
1787.0 23.03
0.309
1767.33 1.34
1.05

VN 2382.0
2217.0
2264.0 86.01
1.254
2287.67 11.82
11.53
*
VQ







•
VX 1863.0
1839.0
1816.0 23.50
0.323
1839.33 2.79
2.50

W 1370.0
1430.0
1340.0 45.83
0.618
1380.00 -6.46
-6.75

WA 2014.0
2037.0
2043.0 15.31
0.199
2031.33 6.66
6.37
it
WB







'• -¦ ¦
Y 1810.0
1660.0
1760.0 76.38
1.058
1743.33 0.85
0.57



Data sorted by Laboratory Average


Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1225.33
X
HU
1640.00

O
1702.67

MQ
1380.00
n
W
1642.67

LM
1703.33

QX
1502.00
li
VL
1645.67

TQ
1705.00

J
1514.33
a
SV
1648.67

Q
1710.00

VG
1516.67
u
ML
1651.00

KL
1713.00

BL
1530.00
u
DD
1653.33

DM
1713.33

BO
1540.00
u
DE
1658.33

CQ
1716.00

LR
1556.00
u
U
1663.33

M
1725.00

DT
1577.67

PT
1671.00

AF
1726.00

R
1580.00

AK
1673.33

AL
1726.00

AJ
1590.33

PB
1675.67

KX
1728.33

D
1596.67

PV
1676.33

JS
1735.33

BA
1598.33

A
1683.67

C
1736.67

AN
1613.33

FE
1685.33

CO
1739.67

DY
1617.33

TD
1688.00

S
1740.00

CJ
1624.33

K
1689.33

NJ
1740.00

BH
1630.00

T
1690.00

EH
1743.33

Y
1630.00

AU
1692.00

QK
1744.67

IU
1636.67

L
1692.33

QL
1752.33

EL
• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 = Insufficient data	X s Determined to he an nut.lipr	Jl = Relnw cnntrni limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 27 / 27
f Total Potassium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1765.67

TI
1800.00

E
1877.67
IT
SS
1767.33

VM
1810.33

I
1878.00
ft.
IC
1770.00

CA
1813.33

BM
1896.00
It
LE
1773.67

TE
1816.00

PW
1986.33
ft
MV
1774.33

NH
1839.33

VX
2031.33
It
WA
1800.00

LF
1853.00

MA
2152.33
X
AA


'
1859.67

N
2287.67
X
VN
responding labs
Frequency distribution
&T-
¦ <	j "t*
-4	-2	0	+2	7T
Normalized deviation of the mean from the known value
-6
—r"
+6
% responding labs Frequency distribution
10-	5	
jpfl_
lj.htii.llT I
_|li
•6
-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 s Above control limit
li s Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-94/216
December 1994
Iodine in Water
Performance
Evaluation Study
A Statistical Evaluation of
the October 7,1994 Data
PROPERTY OF
U.S. EPA Library
LasVeys, NV 39119
RECEIVED
DEC 2 I 1994
-------
Iodine in Water
Performance Evaluation Study
October 7, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
V/
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; October 7, 1994.
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 Intercomparison Study: Gamma in Water, ll-Jun-1993
43/50
Barium-133	Statistical Summary	218 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
44(20.2 %) Failed to respond
; 142(65.1 %) Within all limits
12(5.5 %) Outliers ! / \hv
'—

5(2.3 %) Out of control *'

** 15(6.9 %) In warning zone
but not an outlier

but within control
Statistic
Respondents
Non-outliers
Mean
95.16
Grand Avg 96.74
Std. Dev.
14.34
6.87
Variance
205.73
47.19
% Coef. of Var.
15.07
7.10
% deviation of mean from known value
-3.87
-2.28
Norm. dev. of mean from known value
-0.27
-0.33
Median
97.00
97.00
% deviation of median from known value
-2.02
-2.02
Norm. dev. of median from known value
-0.14
-0.29
18(10.3 %) More than 3 norm. S.D. »
14(8.0 %) Between 2 and 3 norm. S.D.
112(64.4 %) Within 1 norm. S.D.
of known value
n 1 and 2 norm. S.D.
-------
2/8
EMSL-LV Performance Evaluation: Iodine in Water, 7*Oct-1994
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 msan 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 Intercomparison Study: Gamma in Water, ll-Jun-1993	45/50
/	'		1			,
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
99.0
97.0
90.0
4.73
0.532
95.33
-0.24
-0.64
DM
102.0
102.0
102.0
0.00
0.000
102.00
0.91
0.52
DO
91.0
98.0
98.0
4.04
0.413
95.67
-0.19
-0.58
DA







•
DT
101.0
99.0
105.0
3.06
0.354
101.67
0.85
0.46
DY







•
DZ
84.0
84.0
84.0
0.00
0.000
84.00
-2.21
-2.60
E
97.0
97.0
94.0
1.73
0.177
96.00
-0.13
-0.52
EA
97.0
99.0
98.0
1.00
0.118
98.00
0.22
-0.17
EB
103.0
103.0
103.0
0.00
0.000
103.00
1.08
0.69
EH
95.0
96.0
95.0
0.58
0.059
95.33
-0.24
-0.64
EL







•
EN







•
EW
128,0
13&0
118.0
7.51
0.827
124.67
4,84
4.45 x
EX
94.0
97.0
92.0
2.52
0.295
94.33
-0.42
-0.81
EZ
103.0
94.0
103.0
5.20
0.532
100.00
0.56
0.17
FE
99.0
95.0
97.0
2.00
0.236
97.00
0.04
-0.35
FJ
95.0
94.0
98.0
2.08
0.236
95.67
-0.19
-0.58
FK
105&






0
FL
105.0
99.0
100.0
3.21
0.354
101.33
0.79
0.40
FU
96.0
99.0
100.0
2.08
0.236
98.33
0.28
-0.12
FZ
100.0
91.0
100.0
5.20
0.532
97.00
0.04
-0.35
GE
99.0
97.0
90.0
4.73
0.532
95.33
-0.24
-0.64
GI
104.0
91.0
93.0
7.00
0.768
96.00
-0.13
-0.52
GL
97.0
102.0
101.0
2.65
0.295
100.00
0.56
0.17
GO
16.0
1&0
11.0
2.65
0.295
14.00
-14.33
-14.72 x
HB;







• .
HI
94.0
99.0
95.0
2.65
0.295
96.00
-0.13
-0.52
HJ
97.0
101.0
102.0
2.65
0.295
100.00
0.56
0.17
HK
93.0
94.0
93.0
0.58
0.059
93.33
-0.59
-0.98
HL
99.0
99.0
99.0
0.00
0.000
99.00
0.39
0.00
HP
150.0
118.C
134.0
16.00
2.696
U54.U0
3.46
&06 x
HU
77.0
76.0
76.0
0.58
0.059
76.33
-3.54
-3.93 U
I
100.0
99.0
98.0
1.00
0.118
99.00
0.39
0.00
IA







•
IC
IT
107.0
98.0
99.0
4.93
0.532
101.33
0.79
0.40
MJL
IU
94.0
100.0
96.0
3.06
0.354
96.67
-0.01
•
-0.40
J
99.0
97.0
99.0
1.15
0.118
98.33
0.28
-0.12
tIE
90.0
95.0
96.0
3.21
0.354
93.67
-0.53
-0.92
JI
103.0
94.0
96.0
4.73
0.532
97.67
0.16
-0.23
JR
84.0
84.0
84.0
0.00
0.000
84.00
-2.21
-2.60
JS
104.0
95.0
93.0
5.86
0.650
97.33
0.10
-0.29
JY
100.0
108.0
106.0
4.16
0.473
104.67
1.37
0.98
K
97.0
89.0
89.0
4.62
0.473
91.67
-0.88
-1.27
• s No data submitted	TAG SYMBOLS	IT = Above control limit
I 0 = Insufficient data	x = Determined to be an outlier	W = Below control limit
^	/J
-------
4/8
EMSL-LV Performance Evaluation: Iodine in Water,
7-Oct-19S4


/
Iodiite-131







•
Lab Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A 76.0
74.0
75.0
1.00
0.148
75.00
-1.06
-0.87

AA 74.0
71.0
76.0
2.52
0.369
73.67
-1.35
-1.15

AF 87.0
87.0
83.0
2.31
0.295
85.67
1.25
1.44

AI







•
AJ 75.0
74.0
75.0
0.58
0.074
74.67
-1.13
-0.94

AK 83.0
84.0
81.0
1.53
0.222
82.67
0.60
0.79

AL 58.0
62.0
64.0
3.06
0.443
61.33
-4.02
-3.82
JJ
AN 78.0
84.0
81.0
3.00
0.443
81.00
0.24
0.43

AP







•
AU 82.0
79.0
83.0
2.08
0.295
81.3o
0.31
0.51

AW 81.0
81.0
78.0
1.73
0.222
80.00
0.02
0.22

AY 77.0
84.0
85.0
4.36
0.591
82.00
0.46
0.65

AZ 85.0
83.0
84.0
1.00
0.148
84.00
0.89
1.08

BA 85.0
82.0
80.0
2.52
0.369
82.33
0.53
0.72

BC 85.0
90.0
90.0
2.89
0.369
88.33
1.83
2.02

BH 77.0
76.0
79.0
1.53
0.222
77.33
-0.55
-0.36

BL 75.0
75.0
73.0
1.15
0.148
74.33
-1.20
-1.01

BM 84.0
84.0
83.0
0.58
0.074
83.67
0.82
1.01

BO 80.0
81.0
80.0
0.58
0.074
80.33
0.10
0.29

C 80.0
78.0
76.0
2.00
0.295
78.00
-0.41
-0.22

CA 78.0
84.0
82.0
3.06
0.443
81.33
0.31
0.51

CE 96.0
101.0
102.0
3.21
0.443
99.67
4.28
4.47
ft
CJ 74.0
71.0
68.0
3.00
0.443
71.00
-1.92
-1.73

CP 80.0
79.0
76.0
2.08
0.295
78.33
-0.34
-0.14

CQ 79.0
81.0
82.0
1.53
0.222
80.67
0.17
0.36

CX 84.0
78.0
77.0
3.79
0.517
79.67
-0.05
0.14

D 76.0
75.0
90.0
8.39
1.205
80.33
0.10
0.29

DD 83.0
85.0
84.0
1.00
0.148
84.00
0.89
1.08

DE 76.0
77.0
77.0
0.58
0.074
76.67
-0.70
-0.51

DJ







• '
DL







•
DM 75.0
76.0
79.0
2.08
0.295
76.67
-0.70
-0.51

DR







•
DT 91.0
94.0
99.0
4.04
0.591
94.67
3.20
3.39
ft
DY 84.0
82.0
84.0
1.15
0.148
83.33
0.75
0.94

E 80.0
80.0
80.0
0.00
0.000
80.00
0.02
0.22

EB 79.0
79.0
80.0
0.58
0.074
79.33
-0.12
0.07

EH 85.0
80.0
89.0
4.51
0.665
84.67
1.03
1.23

EL 76.0
73.0
82.0
4.58
0.665
77.00
-0.63
-0.43

EX 75.0
84.0
79.0
4.51
0.665
79.33
-0.12
0.07

EZ 78.0
78.0
73.0
2.89
0.369
76.33
-0.77
-0.58

FE 76.0
73.0
89.0
8.50
1.345
79.33
-0.12
0.07

FK







•
FL 82.0
86.0
89.0
3.51
0.517
85.67
1.25
1.44

FU 69.0
77.0
67.0
5.29
0.738
71.00
-1.92
-1.73

• = No data submitted

TAG SYMBOLS

ft = Above control limit
-------

EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 26/52
Rutheni um-106
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
• (grand-avg) (known) Tag
WA
144.0
154.0
148.0
5.03
0.295
148.67
-2.30
-4.53 U
X
148.0
145.0
154.0
4.58
0.266
149.00
-2.27
-4.50 U
Y
175.0
173.0
188.0
8.14
0.443
178.67
0.30
-1.93
Z
155.0
150.0
152.0
2.52
0.148
152.33
-1.98
-4.21 U
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
26.67
X
SK
160.00
U
KL
171.33

HK
46.00
X
QU
160.00
li
AU
171.33

CM
76.33
X
AZ
160.33
u
SV
171.67

NJ
91.33
X
FZ
160.67
w.
LE
172.00

PT
100.00
X
TD
161.00
u
PC
172.33

JR
105.67
X
MY
161.33
li
UY
173.00

BM
116.33
u
NK
161.67
u
AF
174.00

AA
118.33
u
TK
162.00
u
L
174.33

EH
120.00
u
RL
162.33
u
DM
175.00

RO
129.67
u
FE
162.67
u
NP
175.33

S
132.67
u
NI
162.67
u
K
176.33

OM
133.33
li
TS
163.00
II
RR
176.33

CQ
137.00
u
SD
163.33
u
CA
176.67

MP
144.33
u
RM
163.33
u
BH
177.33

DJ
148.67
Jl
WA
164.00
11
FU
177.33

CJ
149.00
u
X
164.33
u
PW
178.00

RH
149.33
u
ST
165.67
u
EL
178.33

UM
149.33
u
RC
166.00
u
TH
178.33

ss
149.33
u
LR
166.00

PV
178.33

DH
149.67
u
RV
166.00

NZ
178.33

AJ
149.67
u
IC
166.67

ux
178.67

Y
150.67

SM
166.67

PI
178.67

SF
152.33

Z
166.67

M
178.67

QT
152.33
u
T
167.33

DT
179.00

TG
152.67

Q
168.33

QZ
179.00

GE
154.00
u
QL
168.67

UE
179.00

DL
155.33
u
MA
169.33

UP
179.67

BI
155.67
li
CK
169.67

JG
180.00

SC
156.67
u
ML
17000

GI
180.00

cs
157.00
JL
SR
170.00

BO
180.33

FL
157.00
li
I
170.33

UV
180.67

BC
157.33

TQ
170.33

AW
181.00

TO
157.67
U
TI
170.67

RF
181.00

NH
158.00
U
PQ
170.67

J
181.00

NB
159.00
li
FK
170.67

DG
181.00

BA
159.67
U
RK
171.00

SI
182.00

1A
159.67
U
AN
171.00

JG
182.00

HI
160.00

U
171.33

MS
182.00

DD
• = No data submitted
25 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1T = Above control limit
& Below control limit
-------
6/8	EMSL-LV Performance Evaluation: Iodine in Water, 7-Oct-1994
Iodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
QB









Q J
69.0
66.0
63.0
3.00
0.443
66.00
-3.01
-2.81

QK
76.0
73.0
75.0
1.53
0.222
74.67
-1.13
-0.94

QL
80.0
82.0






0
QU
92.0
96.0
99.0
3.51
0.517
95.67
3.42
3.61
ft
QX
81.0
82.0
80.0
1.00
0.148
81.00
0.24
0.43

R
76.0
77.0
79.0
1.53
0.222
77.33
-0.55
-0.36

RC








•
RM
106.0
112.0
108.0
3.06
0.443
108.67
6.23
6.42
X
S
78.0
78.0
80.0
1.15
0.148
78.67
-0.27
-0.07

SF
51.0
62.0
540
1.63
0.222
52.33
-6.97
-5;77
X
SK








•.
SM
77.0
83.0
83.0
3.46
0.443
81.00
0.24
0.43

ss
82.0
86.0
81.0
2.65
0.369
83.00
0.67
0.87

sv
79.0
83.0
80.0
2.08
0.295
80.67
0.17
0.36

sw








•
sz
92.0
90.0
91.0
1.00
0.148
91.00
2.41
2.60

TA
77.0
74.0
90.0
8.50
1.345
80.33
0.10
0.29

TC
87.0
90.0
88.0
1.53
0.222
88.33
1.83
2.02

TD
81.0
82.0
80.0
1.00
0.148
81.00
0.24
0.43

TE








*
TH
78.0
70.0
82.0
6.11
0.886
76.67
-0.70
-0.51

TI
75.0
79.0
77.0
2.00
0.295
77.00
-0.63
-0.43

TL
76.0
84.0
85.0
4.93
0.665
81.67
0.38
0.58

TQ
96.0
108.0
96.0
6.93
0.886
100.00
4.35
4.55
ft
U
80.0
80.0
83.0
1.73
0.222
81.00
0.24
0.43

uc
136.0
94.0
116.0
21.00
5.002
115.00
7.60
7.79
X
UE
81.0
81.0
83.0
1.15
0.148
81.67
0.38
0.58

UI
78.0
77.0
81.0
2.08
0.295
78.67
-0.27
-0.07

UL
77.0
78.0
82.0
2.65
0.369
79.00
-0.19
0.00

UN
88.0
79.0
93.0
7.09
1.064
86.67
1.47
1.66

UP
53.0
54.0
56.0
1.00
0.148
54.00
-5.61
-5.41
X
uw
81.0
78.0
82.0
2.08
0.295
80.33
0.10
0.29

UY
76.0
81.0
80.0
2.65
0.369
79.00
-0.19
0.00

VA
78.0
88.0
92.0
7.21
1.064
86.00
1.32
1.52

VC
85.0
85.0
89.0
2.31
0.295
86.33
1.39
1.59

VG
82.0
52.0
77.0
16.07 .
3.314
70.33
-2.07
-1.88

VL
87.0
82.0
78.0
4.51
0.665
82.33
0.53
0.72

VM
47.0
50.0
67.0
5.13
0.738
51.33
-6.18
-6.99
X
VN
81.0
104.0
86.0
12.10
2.330
90.33
2.26
2.45

VQ








•
vx
94.0
93.0
91.0
1.53
0.222
92.67
2.77
2.96

w
75.0
73.0
81.0
4.16
0.591
76.33
-0.77
-0.58

X
75.0
75.0
80.0
2.89
0.369
76.67
-0.70
-0.51

Y
81.0
73.0
81.0
4.62
0.591
78.33
-0.34
-0.14

in i"
• 
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
U = Below control limit
-------
S	
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
	^
51/52
Barium-133








\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3 Sigma
(R + SR)
Average (grand-avg)
(known) Tag
WA
76.0
81.0
78.0 2.52
0.369
78.33
0.41
-0.14

X
67.0
68.0
69.0 1.00
0.148
68.00
1.83
-2.38

Y
75.0
77.0
82.0 3.61
0.517
78.00
0.34
-0.22

Z
72.0
69.0
76.0 3.51
0.517
72.33
0.89
-1.44




Data sorted by Laboratory Averag
re



Average

Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
14.67

X
SK
70.33

RH
75.67


BH
35.33

X
AZ
70.33

CS
76.00


UX
35.67

X
TD
71.00

U
76.00


R
41.67

X
KX
71.33

JE
76.00


QZ
42.00

X
QU
71.67

SF
76.00


OK
53.00

X
TS
71.67

SC
76.00


I
58.00

u
NZ
71.67

NP
76.67


TK
61.00

Ji
DJ
71.67

KM
76.67


S
61.67

JJ
PW
72.00

FK
76.67


o
61.67

u
NK
72.33

Z
76.67


EH
63.00

u
RC
72.33

DG
76.67


E
63.00

II
HU
72.33

AA
76.67


CO
65.00

u
TU
72.67

NJ
76.67


AF
65.00

11
SD
73.00

LR
77.00


FU
65.00

4
MY
73.33

PI
77.00


FE
65.33


TH
73.33

HI
77.00


BL
65.33


NI
73.67

SM
77.33


RM
65.33


M
74.00

ML
77.33


MS
66.33


BA
74.00

L
77.33


LE
67.00


TR
74.00

KH
77.67


UY
67.00


RK
74.33

SR
77.67


QJ
67.67


NB
74:33

RV
77.67


MA
68.00


X
74.67

PT
77.67


JG
68.00


CK
74.67

FJ
77.67


BK
68.67


UN
74.67

DE
. 78.00


Y
68.67


TO
74.67

CM
78.00


QP
68.67


Q
75.00

UM
78.00


OA
69.33


uv
75.00

PV
78.00


JS
69.33


TQ
75.00

BN
78.00


AL
69.33


CJ
75.00

AU
78.33


WA
69.33


BC
75.33

PC
78.33


SS
69.33


AP
75.33

MQ
78.33


PE
69.67


RO
75.33

MP
78.33


AY
69.67


AE
75.33

JY
78.67


ST
70.00


TI
75.33

HK
78.67


RR
70.00


QM
75.67

QL
79.00


UW
70.00


JR
75.67

MV
79.00


SI
70.00


BO
75.67

CA
79.00


RF
• s No data submitted

TAG SYMBOLS

ft
s Above control limit
0 = Insufficient data
		

x s Determined to be an outlier

= Below control limit
	4/
-------
8/8	EMSL-LV Performance Evaluation: Iodine in Water, 7-Oct-1994
Iodine-131
% responding labs	Frequency distribution
10-
o y "—i i1
J ¦- T	
-4	"2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
4-il
illlflllljli
-4	*2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
&EPA
RECEIVED
EMSL LV LIBRARY
C
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA 600/R-95/017B
February 1995
Blind-B Performance
Evaluation Study
A Statistical Evaluation of
the October 18, 1994 Data
0014rsd94.121a
-------
Blind-B
Performance Evaluation Study
October 18, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
V/
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 Blind-B; October 18, 1994.
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.
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: Blind-B, 18-Oct-1994
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 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.
-------
ft		
2/44
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
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: Blind-B, 18-Oct-1994
3/44
Gross Beta	Statistical Summary	193 Participants
The known value of this nuclide is 142.0 pCi/1 with an expected precision of 21.0; the control limits
are 105.6 to 178.4; the warning regions are 105.6 to 117.7 and 166.3 to 178.4
44(22.8 %) Failed to respond
03(53.4 %) Within all limits
3(1.6 %) Outliers'
11 (5.7 %) Out of control
but not an outlier
Statistic
32(16
Respondents
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
127.49
Grand Avg 125.57
41.94
13.92
1758.73
193.70
32.90
11.08
-10.22
-11.57
-0.35
-1.18
125.67
125.67
-11.50
-11.50
-0.39
-1.17
-------
4/44	EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
127.0
132.0
130.0
2.52
0.141
129.67
0.34
-1.02
AE
105.0
115.0
100.0
7.64
0.422
106.67
-1.56
-2.91
AF
138.0
128.0
126.0
6.43
0.338
130.67
0.42
-0.93
AH







•
Al







•
AJ







•
AK
120.0
126.0
131.0
5.51
0.309
125.67
0.01
-1.35
AL
141.0
155.0
144.0
7.37
0.394
146.67
1.74
0.38
AO







«
AP
123.0
127.0
129.0
3.06
0.169
126.33
0.06
-1.29
Alt
139.0
143.0
141.0
2.00
0.113
141.00
1.27
-0.08
AU
154.0
155.0
157.0
1.53
0.084
155.33
2.45
1.10
AW
127.0
123.0
125.0
2.00
0.113
125.00
-0.05
-1.40
AZ
116.0
110.0
108.0
4.16
0.225
111.33
-1.17
-2.53
BA
128.0
123.0
127.0
2.65
0.141
126.00
0.04
-1.32
BC
123.0
121.0
124.0
1.53
0.084
122.67
-0.24
-1.59
BO
16.0
• 96.0
08.0
47.35
3.542
69.67
-4.61
-5:97 X
BH
120.0
122.0
123.0
1.53
0.084
121.67
-0.32
-1.68
BK
137.0
138.0
130.0
4.36
0.225
135.00
0.78
-0.58
BL







0
BM
130.0
133.0
135.0
2.52
0.141
132.67
0.59
-0.77
BN
127.0
130.0
132.0
2.52
0.141
129.67
0.34
-1.02
BO







O
BS
131.0
134.0
136.0
2.52
0.141
133.67
0.67
-0.69
BW







6
C
144.0
146.0
147.0
1.53
0.084
145.67
1.66
0.30
CA
124.0
122.0
128.0
3.06
0.169
124.67
-0.07
-1.43
CE
128.0
133.0
126.0
3.61
0.197
129.00
0.28
-1.07
CG
123.0
123.0
121.0
1.15
0.056
122.33
-0.27
-1.62
CJ
120.0
120.0
120.0
0.00
0.000
120.00
-0.46
-1.81
CK
135.0
141.0
143.0
4.16
0.225
139.67
1.16
-0.19
CM







-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994	5/44
	
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DO








•
DS








•
DT
136.0
135.0
144.0
4.93
0.253
138.33
1.05
-0.30

DZ
120.0
110.0
116.0
5.03
0.281
115.33
-0.84
-2.20

E
127.0
127.0
127.0
0.00
0.000
127.00
0.12
-1.24

EB
134.0
134.0
137.0
1.73
0.084
135.00
0.78
-0.58

EL








•
EO
135.0
136.0
137.0
1.00
0.056
136.00
0.86
-0.49

ER









EV
123.0
124.0
126.0
1.53
0.084
124.33
-0.10
-1.46

EX








•
FF
3.0
4.0
4.0
0.58
0.028
3;67
-10.05
-11.41
X
J
FJ
120.0
105.0
110.0
7.64
0.422
111.67
-1.15
-2.50
FL
113.0
113.0
109.0
2.31
0.113
111.67
-1.15
-2.50

FN
88.0
84.0
81.0
3.51
0.197
84.33
-3.40
-4.76

FU
105.0
104.0
101.0
2.08
0413
103.33
-1.83
-3.19
u
FZ
100.0
95.0
120.0
13.23
0.703
105.00
-1.70
-3.05
U
GE
121.0
122.0
122.0
0.58
0.028
121.67
-0.32
-1.68

GI









GQ
129.0
118.0
124.0
5.51
0.309
123.67
-0.16
-1.51

GT
31:0
30.0






0
GZ
598,0
686.0
584.0
7.81
0.394
589.00
38122
36.87
X
HI
120.0
120.0
120.0
0.00
0.000
120.00
-0.46
-1.81

HK
125.0
127.0
129.0
2.00
0.113
127.00
0.12
-1.24

HL
137.0
138.0
137.0
0.58
0.028
137.33
0.97
-0.38

HP
114.0
118.0
114.0
2.31
0.113
115.33
-0.84
-2.20

HX









I
129.0
123.0
132.0
4.58
0.253
128.00
0.20
-1.15

IC
115.0
119.0
118.0
2.08
0.113
117.33.
-0.68
-2.03

ID
117.0
111.0
111.0
3.46
0.169
113.00
-1.04
-2.39

IE
118.0
108.0
121.0
6.81
0.366
115.67
-0.82
-2.17

J
120.0
121.0
118.0
1.53
0.084
119.67
-0.49
-1.84

JE
137.0
137.0
140.0
1.73
0.084
138.00
1.03
-0.33

JG








•
JN
118.0
107.0
116.0
5.86
0.309
113.67
-0.98
-2.34

JQ
156.0
165.0
160.0
4.51
0.253
160.33
2.87
1.51

JS
112.0
116.0
125.0
6.66
0.366
117.67
-0.65
-2.01

JX








9
JY
118.0
117.0
115.0
1.53
0.084
116.67
-0.73
-2.09

K
104.0
99.0
99.0
2.89
0.141
100.67
-2.05
-3.41
u
KE








•
KT
14U.U
145.0
150.0
5.00
0.281
145.00
1.60
0.25

KX
140.0
142.0
137.0
2.52
0.141
139.67
1.16
-0.19

L
144.0
145.0
145.0
0.58
0.028
144.67
1.58
0.22

LF
130.0
130.0
120.0
5.77
0.281
126.67
0.09
-1.26

hi "I
• 5)
	<
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
•11 = Below control limit
-------
6/44	EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LG








fr
LL
119.0
118.0
119.0
0.58
0.028
118.67
-0.57
-1.92

LR
131.0
140.0
126.0
7.09
0.394
132.33
0.56
-0.80

LT
110.0
110.0
114.0
2.31
0.113
111.33
-1.17
-2.53

M
110.0
108.0
110.0
1.15
0.056
109.33
-1.34
-2.69

MA
116.0
117.0
120.0
2.08
0.113
117.67
-0.65
-2.01

MP








•
MQ
132.0
103.0
138.0
18.72
0.984
124.33
-0.10
-1.46

MV
143.0
152.0
135.0
8.50
0.478
143.33
1.47
0.11

MY
N
122.0
124.0
122.0
1.15
0.056
122.67
-0.24
-1.59

A i
NA
154.0
150.0
156.0
3.06
0.169
153.33
2.29
0.93
•
NH
124.0
118.0
90.0
18.15
0.956
110.67
-1.23
-2.58

NJ
137.0
123.0
129.0
7.02
0.394
129.67
0.34
-1.02

NK
131.0
126.0
135.0
4.51
0.253
130.67
0.42
-0.93

NO
123.0
125.0
127.0
2.00
0.113
125.00
-0.05
-1.40

NT
132.0
133.0
133.0
0.58
0.028
132.67
0.59
-0.77

O
128.0
124.0
117.0
5.57
0.309
123.00
-0.21
-1.57

OF
125.0
124.0
123.0
1.00
0.056
124.00
-0.13
-1.48

OS
153.0
155.0
155.0
1.15
0.056
154.33
2.37
1.02

OX
118.0
121.0
124.0
3.00
0.169
121.00
-0.38
-1.73

OY
112.0
117.0
113.0
2.65
0.141
114.00
-0.95
-2.31

P
122.0
122.0
120.0
1.15
0.056
121.33
-0.35
-1.70

PA
125.0
122.0
124.0
1.53
0.084
123.67
-0.16
-1.51

PB
144.0
145.0
142.0
1.53
0.084
143.67
1.49
0.14

PG
131.0
136.0
123.0
6.56
0.366
130.00
0.37
-0.99

PI








O
PM
126.0
133.0
122.0
5.57
0.309
127.00
0.12
-1.24

PQ
135.0
136.0
140.0
2.65
0.141
137.00
0.94
-0.41

PR
98.0
94.0
94.0
2.31
0.113
95.33
-2.49
-3.85
u
PV
115.0
114.0
117.0
1.53
0.084
115.33
-0.84
-2.20

PW








a
Q
140.0
152.0
153.0
7.23
0.366
148.33
1.88
0.52

QC
143.0
143.0
144.0
0.58
0.028
143.33
1.47
0.11

QJ









QP








•
QQ
114.0
125.0
120.0
5.51
0.309
119.67
-0.49
-1.84

QT
121.0
127.0
131.0
5.03
0.281
126.33
0.06
-1.29

QU
98.0
120.0
125.0
14.36
0.759
114.33
-0.93
-2.28

QW
123.0
120.0
118.0
2.52
0.141
120.33
-0.43
-1.79

ox
141.0
142.0
144.0
1.53
0.084
142.33
1.38
0.03

QZ
114.0
116.0
120.0
3.06
0.169
11667
-0.73
-2.09

RC








•
RD
127.0
120.0
127.0
4.04
0.197
124.67
-0.07
-1.43

RE








•
• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
= Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
	
7/44
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
BF







•
RG
115.0
120.0
118.0
2.52
0.141
117.67
-0.65
-2.01
RJ
132.0
136.0
134.0
2.00
0.113
134.00
0.70
-0.66
RK
102.0
102.0
103.0
0.58
0.028
102.33
-1.92
-3.27 U
RL








RM
143.0
135.0
137.0
4.16
0.225
138.33
1.05
-0.30
RP








RR







•
RV
151.0
173.0
167.0
11.37
0.619
163.67
3.14
1.79
RZ
108.0
108.0
112.0
2.31
0.113
109.33
-1.34
-2.69
S
135.0
143.0
139.0
4.00
0.225
139.00
1.11
-0.25
sc
128.0
114.0
128.0
8.08
0.394
123.33
-0.18
-1.54
SD
120.0
111.0
105.0
7.55
0.422
112.00
-1.12
-2.47
SF
150.0
145.0
144.0
3.21
0.169
146.33
1.71
0.36
SI
84.0
99.0
93.0
7.55
0.422
92.00
-2.77
-4.12 U
SL
125.0
122.0
130.0
4.04
0.225
125.67
0.01
-1.35
SM
115.0
102.0
123.0
10.60
0.591
113.33
-1.01
-2.36
SN
105.0
101.0
96.0
4.51
0.253
100.67
-2.05
-3.41 U
SO
13°>.0
133.0
130.0
1.73
0.084
132.00
0.53
-0.82
SR
115.0
122.0
108.0
7.00
0.394
115.00
-0.87
-2.23
SS
117.0
125.0
112.0
6.56
0.366
118.00
-0.62
-1.98
ST
134.0
122.0
125.0
6.24
0.338
127.00
0.12
-1.24
SW








sx
149.0
141.0
146.0
4.04
0.225
145.33
1.63
0.27
sz
123.0
126.0
128.0
2.52
0.141
125.67
0.01
-1.35
T
127.0
127.0
127.0
0.00
0.000
127.00
0.12
-1.24
TD
139.0
123.0
142.0
10.21
0.534
134.67
0.75
-0.60
TE







•
TH
138.0
142.0
136.0
3.06
0.169
138.67
1.08
-0.27
TI
99.0
105.0
112.0
6.51
0.366
105.33
-1.67
-3.02 U
TL
131.0
128.0
127.0
2.08
0.113
128.67
0.26
-1.10
TN
139.0
128.0
126.0
7.00
0.366
131.00
0.45
-0.91
TQ
123.0
139.0
110.0
14.53
0.816
124.00
-0.13
-1.48
TS
142.0
147.0
139.0
4.04
0.225
142.67
1.41
0.05
TY
115.0
115.0
110.0
2.89
0.141
113.33
-1.01
-2.36
U
133.0
126.0
125.0
4.36
0.225
128.00
0.20
-1.15
UA
129.0
128.0
126.0
1.53
0.084
127.67
0.17
-1.18
UE
156.0
149.0
151.0
3.61
0.197
152.00
2.18
0.82
UG







•
UK








UN
87.0
118.0
94.0
16.26
0.872
99.67
-2.14
-3.49 li
UP
122.0
128.0
139.0
8.62
0.478
129.67
0.34
-1.02
UQ
126.0
132.0
134.0
4.16
0.225
130.67
0.42
-0.93
UW
135.0
128.0
127.0
4.36
0.225
130.00
0.37
-0.99
UY
128.0
126.0
117.0
5.86
0.309
123.67
-0.16
-1.51
• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
s Below control limit
-------
(c	







	^
8/44
EMSL-LV Performance Evaluation: Blind-B,
18-Oct-1994

f
Gross Beta







1




Exper.
Rng anal

Normalized deviation
Lab Res. 1
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag ||
vd







0
VG 95.0

98.0
100.0 2.52
0.141
97.67 -2.30
-3.66 U
VI







O,
VJ 108.0

111.0
116.0 4.04
0.225
111.67 -1.15
-2.50
VM







O
-VN







o
VO 134.0

139.0
137.0 2.52
0.141
136.67 0.92
-0.44
VQ








VT 147.0

132.0
128.0 10.02
0.534
135.67 0.83
-0.52
VU







•
VX







•
W 128.0

126.0
130.0 2.00
0.113
128.00 0.20
-1.15
X 128.0
135.0 128.0 4.04
0.197
130.33 0.39
-0.96

Data sorted by Laboratory Average

Average
Tag

Lab
Average
Tag
Lab
Average
Tag Lab
3.67
X

FF
114.00

OY
122.33
CG
69.67
X

BG
114.33

QU
122.67
MY
84.33


FN
114.33

CQ
122.67
BC
92.00
U

SI
115.00

SR
123.00
O
95.33


PR
115.00

CX
123.33
SC
97.67
li

VG
115.33

PV
123.67
UY
99.67
U

UN
115.33

HP
123.67
PA
100.67
li

SN
115.33

DZ
123.67
GQ
100.67
\l

K
115.67

IE
124.00
TQ
102.33
U

RK
115.67

DG
124.00
OF
103.33
U

FU
116.67

QZ
124.33
MQ
105.00


FZ
116.67

JY
124.33
EV
105.33
a

TI
117.33

IC
124.67
RD
105.67


DM
117.67

RG
124.67
CA
106.67


AE
117.67

MA
125.00
NO
109.33


RZ
117.67

JS
125.00
AW
109.33


M
118.00

SS
125.67
SZ
110.67


NH
118.67

LL
125.67
SL
111.33


LT
119.00

CS
125.67
AK
111.33


AZ
119.67

QQ
126.00
BA
111.67


VJ
119.67

J
126.33
QT
111.67


FL
120.00

m
126.33
CP
111.67


FJ
120.00

CJ
126.33
AP
112.00


SD
120.33

QW
126.67
LF
112.67


CO
121.00

ox
127.00
T
113.00


ID
121.33

p
127.00
ST
113.33


TY
121.67

GE
127.00
PM
113.33


SM
121.67

DL
127.00
HK
113.67


JN
121.67

BH
127.00
E
o = No data submitted

TAG SYMBOLS

It s Above control limit
0 = Insufficient data

x = Determined to be an outlier
JJ- = Below control limit
	-			
-------
=v\
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
9/44
Gross Beta
Data sorted by Laboratory Average
Average Tag Lab
Average
Tag
Lab
Average
Tag
Lab
127.00
DD
132.67

NT
141.00

AR
127.67
UA
132.67

BM
142.33

QX
128.00
W
133.67

BS
142.67

TS
128.00
U
134.00

RJ
143.33

QC
128.00
I
134.00

DE
143.33

MV
128.67
TL
134.67

TD
143.67

PB
129.00
CE
135.00

EB
144.67

L
129.67
UP
135.00

BK
145.00

KT
129.67
NJ
135.67

VT
145.33

SX
129.67
BN
136.00

EO
145.67

c
129.67
A
136.67

VO
146.33

SF
130.00
UW
137.00

PQ
146.67

AL
130.00
PG
137.00

D
148.33

Q
130.33
X
137.33

HL
152.00

UE
130.67
UQ
138.00

JE
153.33

NA
130.67
NK
138.33

RM
154.33

OS
130.67
AF
138.33

DT
155.33

AU
131.00
TN
138.67

TH
155.67

DB
132.00
SO
139.00

S
160.33

JQ
132.33
LR
139.67

KX
163.67

RV


139.67

CK
589.00
X
GZ
responding labs
Frequency distribution
10-
0 '-T
-6


•I	,
—i—
+6
-4	-2	0	+2
Normalized deviation of the mean from the known value
+4
% responding labs	Frequency distribution
lO-i	
j
					r
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS ft s Above control limit
0 s Insufficient data	x = Determined to be an outlier	JJ- = Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
10/44
Strontium-89	Statistical Summary	193 Participants
The known value of this nuclide is 25.0 pCi/I with an expected precision of 5.0; the control limits
are 16.3 to 33.7; the warning regions are 16.3 to 19.2 and 30.8 to 33.7
Statistic	Respondents	Non-outliers
Mean
23.72
Grand Avg 22.99
Std. Dev.
5.53
4.16
Variance
30.58
17.27
% Coef. of Var.
23.31
18.08
% deviation of mean from known value
-5.13
-8.05
Norm. dev. of mean from known value
-0.23
-0.48
Median
22.67
22.67
% deviation of median from known value
-9.33
-9.33
Norm. dev. of median from known value
-0.42
-0.56
-------
6	








	^
11/44
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994


Strontium-89








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
23.0
23.0
23.0
0.00
0.000
23.00
0.00
-0.69

AE
23.0
23.0
22.0
0.58
0.118
22.67
-0.11
-0.81

AF
27.0
28.0
25.0
1.53
0.354
26.67
1.27
0.58

AH








•
AI








•
AJ








• •
AK
24.0
25.0
24.0
0.58
0.118
24.33
0.47
-0.23

AL
27.0
29.0
29.0
1.15
0.236
28.33
1.85
1.15

AO








•
AP








•
AH









AU
25.0
24.0
27.0
1.53
0.354
25.33
0.81
0.12

AW
18.0
20.0
21.0
1.53
0.354
19.67
-1.15
-1.85

AZ
25.0
28.0
26.0
1.53
0.354
26.33
1.16
0.46

BA
29.0
32.0
27.0
2.52
0.591
29.33
2.20
1.50

BC
21.0
20.0
20.0
0.58
0.118
20.33
-0.92
-1.62

BO








•
BH
23.0
23.0
24.0
0.58
0.118
23.33
0.12
-0.58

BK








•
BL
23.0
26.0
17.0
4.58
1.120
22.00
-0.34
-1.04

BM
22.0
25.0
21.0
2.08
0.473
22.67
-0.11
-0.81

BN








;•
BO
iJU.U
•za.u
31.0
1.53
0.354
29.67
2.31
1.62

BS








4
BW









C
30.0
29.0
28.0
1.00
0.236
29.00
2.08
1.39

CA
20.0
21.0
21.0
0.58
0.118
20.67
-0.80
-1.50

CE








, f
CG
32.0
25.0
29.0
3.51
0.827
28.67
1.97
1.27

CJ
27.0
24.0
23.0
2.08
0.473
24.67
0.58
-0.12

CK
42.0
39.0
41.0
163
0.354
40.67
6.12
5.43
X
CM









CO








•
CP








•
CQ
23.0
20.0
20.0
1.73
0.354
21.00
-0.69
-1.39

CS
23.0
22.0
22.0
0.58
0.118
22.33
-0.23
-0.92

CX
27.0
24.0
27.0
1.73
0.354
26.00
1.04
0.35

D








»
DB








»
DD
24.0
21.0
20.0
2.08
0.473
21.67
-0.46
-1.15

DE
23.0
23.0
23.0
0.00
0.000
23.00
0.00
-0.69

DG
a 0
13.0
12.0
2.65
0.591
11.00
-4.15
-4.85
¦U
DJ









DL








•
DM









• =
No data submitted

TAG SYMBOLS

ft = Above control limit
in
S!
Insufficient data
x =
Determined to be an outlier
= Below control limit
	//
-------
&	







	^


EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
12/44
Strontium-89






\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
25.0
25.0
18.0
4.04
0.827
22.67
-0.11
-0.81
DS








DT
24.0
26.0
24.0
1.15
0.236
24.67
0.58
-0.12
DZ
22.0
21.0
21.0
0.58
0.118
21.33
-0.57
-1.27
E
14.0
14.0
15.0
0.58
0.118
14.33
-3.00
-3.70 It
EB
37.0
26.0
28.0
5.86
1.570
30.33
2.55
1.85
EL
19.0
21.0
17.0
2.00
0.473
19.00
-1.38
-2.08
EO








ER








EV







•
EX







9'
FF







•
FJ







V
FL







•
FN








FU
33.0
28.0
31.0
2.52
0.591
30.67
2.66
196
FZ








GE








GI








GQ
23.0
24.0
25.0
1.00
0.236
24.00
0.35
-0.35
GT







•
GZ







•
HI







•
HK
23.0
22.0
22.0
0.58
0.118
22.33
-0.23
-0.92
HL







•
HP
22.0
19.0
19.0
1.73
0.354
20.00
-1.03
-1.73
HX








I
27.0
29.0
32.0
2.52
0.591
29.33
2.20
1.50
IC
24.0
22.0
25.0
1.53
0.354
23.67
0.24
-0.46
m







9
IE







9
J
20.0
19.0
18.0
1.00
0.236
19.00
-1.38
-2.08
JE
20.0
16.0
15.0
2.65
0.591
17.00
-2.07
-2.77
JG







•
JN







9
JQ







.0
JS
25.0
24.0
24.0
0.58
0.118
24.33
0.47
-0.23
JX







•
JY
14.0
18.0
13.0
2.65
0.591
15.00
-2.77
-3.46 U
K
19.0
15.0
25.0
5.03
1.345
19.67
-1.15
-1.85
KE








KT







'9
KX
19.0
21.0
23.0
2.00
0.473
21.00
-0.69
-1.39
L
26.0
26.0
27.0
0.58
0.118
26.33
1.16
0.46
13?








• =
No data submitted

TAG SYMBOLS

11 = Above control limit
L0 =
Insufficient data
x -
Determined to be an outlier
= Below control limit
-------
/?	






			
13/44
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
Strontium-89





	\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LG







LL






•
LR






•
LT
21.0
22.0
21.0
0.58
0.118
21.33
-0.57 -1.27
M
22.0
25.0
23.0
1.53
0.354
23.33
0.12 -0.58
MA







MP






•
MQ
24.0
21.0
22.0
1.53
0.354
22.33
-0.23 -0.92
MV






•
MY






•
N






•
NA






#
NH






•
NJ
21.0
26.0
22.0
2.65
0.591
23.00
0.00 -0.69
NK






•
NO
17.0
20.0
23.0
3.00
0.709
20.00
-1.03 -1.73
NT
26.0
27.0
27.0
0.58
0.118
26.67
1.27 0.58
O







OF







OS






~
OX






•
OY






•
P






•
PA







PB
25.0
25.0
25.0
0.00
0.000
25.00
0.70 0.00
PG






•
PI






•
PM






•
PQ






•
PR







PV






•
PW







Q
26.0
21.0
29.0
4.04
0.945
25.33
0.81 0.12
QC







QJ







QP






•
QQ






•
QT






•
QU
22.0
21.0
19.0
1.53
0.354
20.67
-0.80 -1.50
QW
20.0
20.0
18.0
1.15
0.236
19.33
-1.27 -1.96
ox






•
QZ
27.0
29.0
25.0
2.00
0.473
27.00
1.39 0.69
RC






•
RD






•
RE






•
• =
No data submitted

TAG SYMBOLS

1! = Above control limit
hi
s
Insufficient data
x =
Determined to be an outlier
= Below control limit
	V
-------
&	

EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
	^
14/44
Strontium-89






'
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RF







"" •
RG







•
RJ








RK








ELi







•
RM
22.0
20.0
19.0
1.53
0-3K4
90 as
-0.92
-1.62
RP








BR







•/
RV
RZ
44.0
48.0
49.0
2.65
0.691
47iOO
U.iJZ
Y.OZ X
«
S
20.0
21.0
22.0
1.00
0.236
21.00
-0.69
-1.39
sc
24.0
24.0
20.0
2.31
0.473
22.67
-0.11
-0.81
SD
21.0
22.0
20.0
1.00
0.236
21.00
-0.69
-1.39
SF
24.0
23.0
20.0
2.08
0.473
22.33
-0.23
-0.92
SI
18.0
23.0
21.0
2.52
0.591
20.67
-0.80
-1.50
SL







%
SM
34.0
28.0
30.0
3.06
0.709
30.67
2.66
1.96
SN








so








SR







•
ss
19.0
28.0
23.0
4.51
1.120
23.33
0.12
-0.58
ST
24.0
23.0
24.0
0.58
0.118
23.67
0.24
-0.46
SW








sx







•
' sz







•
T
24.0
24.0
26.0
1.15
0.236
24.67
0.58
-0.12
TD
38.0
31.0
44.0
6.5l
2.020
37.67
6.09
4.39 x
TE







*
TH







•
TT
15.0
17.0
17.0
1.15
0.236
16.33
-2.30
-3.00
TL
42.0
29.0
34.0
6.56
2.020
35.00
4.16
3.46 H
-IN-







m
TQ
24.0
25.0
24.0
0.58
0.118
24.33
0.47
-0.23
TS







•
TY







•
U
22.0
19.0
22.0
1.73
0.354
21.00
-0.69
-1.39
UA







•
UE
27.0
29.0
29.0
1.15
0.236
28.33
1.85
1.15
Ufr







•
UK







•
UN
19.0
17.0
18.0
1.00
0.236
18.00
-1.73
-2.42
UP
18.0
19.0
20.0
1.00
0.236
19.00
-1.38
-2.08
UQ







>
UW







•
UY







•
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
1 0 s
V-	
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
/>	
15/44









	^
EMSL-LV Performance Evaluation: Blind-B,
18-Oct-1994



Strontium-89










Lab Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VC









1
VG 20.0
18.0
18.0 1.15
0.236
18.67
1.50

-2.19

VI










VJ










VM










VN










VO









*
VQ










VT









•
VU










vx










W 20.0
20.0
21.0 0.58
0.118
20.33
0.92

-1.62

X 20.0
12.0
26.0 7.02
2.245
19.33
1.27

-1.96



*t5;i



ro>/vvte-;
* • V


1


Data sorted by Laboratory Averaj
»e




Average
Tag
Lab
Average
Tag
Lab
Average

Tag

Lab
11.00
u
DG
21.00

KX
24.67



T
14.33
u
E
21.00

CQ
24.67



DT
15.00
u
JY
21.33

LT
24.67



CJ
16.33

TI
21.33

DZ
25.00



PB
17.00

JE
21.67

DD
25.33



Q
18.00

UN
22.00

BL
25.33



AU
18.67

VG
22.33

SF
26.00



CX
19.00

UP
22.33

MQ
26.33



L
19.00

J
22.33

HK
26.33



AZ
19.00

EL
22.33

CS
26.67



NT
19.33

X
22.67

sc
26.67



AF
19.33

QW
22.67

DO
27.00



QZ
19.67

K
22.67

BM
28.33



UE
19.67

AW
22.67

AE
28.33



AL
20.00

NO
23.00

NJ
28.67



CG
20.00

HP
23.00

DE
29.00



C
20.33

W
23.00

A
29.33



I
20.33

RM
23.33

ss
29.33



BA
20.33

BC
23.33

M
29.67



BO
20.67

SI
23.33

BH
30.33



EB
20.67

QU
23.67

ST
30.67



SM
20.67

CA
23.67

IC
30.67



FU
21.00

U
24.00

GQ
35.00

tr

TL
21.00

SD
24.33

TQ
37.67

X

TD
21.00

S
24.33

JS
40.67

X

CK



24.33

AK
47.00

X

RV
• = No data submitted

TAG SYMBOLS

ft
s Above control limit
0 s Insufficient data
	

x = Determined to be an outlier

= Below control limit
	//
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994	16/44
Strontium-89
responding labs	Frequency distribution
10
t - -*¦ t" ¦¦"ftllBPlMjBH | t	,	- - -
-6	*4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
0

T	1	" I	¥" m T"	T— —T——— I	I ~ T	I
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
17/44
Strontium-90	Statistical Summary	193 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
109(56.5 %) Failed to respond;
. 79(40.9 %) Within all limits
1(0.5 %) Outliers	
Statistic
Respondents
-•4(2.1 %) In warning zone
but within control
Non-outliers
Mean
15.12
Grand Avg 14.92
Std. Dev.
2.93
2.27
Variance
8.58
5.17
% Coef. of Var.
19.38
15.24
% deviation of mean from known value
0.79
-0.56
Norm. dev. of mean from known value
0.04
-0.04
Median
14.67
14.67
% deviation of median from known value
-2.22
-2.22
Norm. dev. of median from known value
-0.11
-0.15
1(1.2 %) More than 3 norm. S.D.
4(4.8 %) Between 2 and 3 norm. S.D.
; 70(83.3 %) Within 1 norm. S.D.
of known value
9(10.7 %) Between 1 and-2 norm. S.D.
-------
6









18/44
«•
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994


Strontium-90








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
16.0
15.0
15.0
0.58
0.118
15.33
0.14
0.12

AE
14.0
15.0
14.0
0.58
0.118
14.33
-0.20
-0.23

AF
13.0
14.0
14.0
0.58
0.118
13.67
-0.43
-0.46

AH







**
<•
AT








•
AJ








*
AK
17.0
16.0
16.0
0.58
0.118
16.33
0.49
0.46

AL
15.0
15.0
13.0
1.15
0.236
14.33
-0.20
-0.23

AO








€>
AP








©
AR








©
AU
15.0
16.0
14.0
1.00
0.236
15.00
0.03
0.00

AW
18.0
19.0
18.0
0.58
0.118
18.33
1.18
1.15

AZ
15.0
15.0
14.0
0.58
0.118
14.67
-0.09
-0.12

BA
14.0
15.0
15.0
0.58
0.118
14.67
-0.09
-0.12

BC
16.0
16.0
16.0
0.00
0.000
16.00
0.38
0.35

BG
12.0
14.0
14.0
1.15
0.236
13.33
-0.55
-0.58

BH
16.0
16.0
16.0
0.00
0.000
16.00
0.38
0.35

BK








- ft
BL
15.0
14.0
16.0
1.00
0.236
15.00
0.03
0.00

BM
15.0
14.0
14.0
0.58
0.118
14.33
-0.20
-0.23

BN








•
BO
14.0
14.0
13.0
0.58
0.118
1.3.67
-0.43
-0.46

BS








•
BW








•
C
19.0
19.0
19.0
0.00
0.000
19.00
1.41
1.39

CA
14.0
15.0
14.0
0.58
0.118
14.33
-0.20
-0.23

CE
14.0
15.0
14.0
0.58
0.118
14.33
-0.20
-0.23

CG
16.0
17.0
16.0
0.58
0.118
16.33
0.49
0.46

CJ
15.0
15.0
13.0
1.15
0.236
14.33
-0.20
-0.23

CK
17.0
15.0
17.0
1.15
0.236
16.33
0.49
0.46

CM








. •
CO
17.0
12.0
26.0
7.09
2.245
18.33
1.18
1.15

CP








»
CQ
15.0
16.0
15.0
0.58
0.118
15.33
0.14
0.12

cs
18.0
17.0
17.0
0.58
0.118
17.33
0.84
0.81

cx
130
15.0
14.0
1.00
0.236
14.00
-0.32
-0.35

D








*
DB








•
DD
14.0
14.0
13.0
0.58
0.118
13.67
-0.43
-0.46

DE
13.0
14.0
14.0
0.58
0.118
13.67
-0.43
-0.46

DG
9.0
6.0
7.0
1.53
0.354
7.33
-2.63
-2.66

DJ








*
DL








•
DM








•
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
ill
S
	V
Insufficient data
x =
Determined to be an outlier
W s Below control limit
	'J
-------
_— .
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994	19/44
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
DO
13.0
14.0
14.0
0.58
0.118
13.67
-0.43
-0.46
DS







•
DT
16.0
15.0
14.0
1.00
0.236
15.00
0.03
0.00
DZ
13.0
14.0
15.0
1.00
0.236
14.00
-0.32
-0.35
E
15.0
16.0
16.0
0.58
0.118
15.67
0.26
0.23
EB
11.0
12.0
11.0
0.58
0.118
11.33
-1.24
-1.27
EL
16.0
15.0
16.0
0.58
0.118
15.67
0.26
0.23
EO







ft
ER







k
EV







ft
EX







•
FF







•
FtT







•
FL







•
FN







•
FU
15.0
15.0
13.0
1.15
0.236
14.33
-0.20
-0.23
FZ








GE








GI








GQ
20.0
22.0
21.0
1.00
0.236
21.00
2.11
2.08
GT







•
GZ








HI







•
HK
13.0
13.0
14.0
0.58
0.118
13.33
-0.55
-0.58
HL







•
HP
16.0
16.0
15.0
0.58
0.118
15.67
0.26
0.23
HX







•
I
14.0
14.0
13.0
0.58
0.118
13.67
-0.43
-0.46
IC
13.0
14.0
13.0
0.58
0.118
13.33
-0.55
-0.58
ED







•
IE







«
J
15.0
15.0
15.0
0.00
0.000
15.00
0.03
0.00
JE
18.0
18.0
19.0
0.58
0.118
18.33
1.18
1.15
JG







•
JN







•
JQ







~
JS
14.0
15.0
15.0
0.58
0.118
14.67
-0.09
-0.12
JX







•
JY
8.0
6.0
8.0
1.15
0.236
7.33
-2.63
-2.66
K
16.0
20.0
19.0
2.08
0.473
18.33
1.18
1.15
KE








KT







•
KX
16.0
15.0
15.0
0.58
0.118
15.33
0.14
0.12
L
14.0
14.0
14.0
0.00
0.000
14.00
-0.32
-0.35
tFi







»
q	
Q •
in I"
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
JJ- s Below control limit
	-4
-------
(,	
20/44
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
	
Strontium-90







Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LG







•.
LL








LR








LT
16.0
16.0
17.0
0.58
0.118
16.33
0.49
0.46
M
14.0
15.0
15.0
0.58
0.118
14.67
-0.09
-0.12
MA








MP







•
MQ
14.0
15.0
14.0
0.58
0.118
14.33
-0.20
-0.23
MV







%
MY







•
>N







€>
,NA








NH







•
NJ
14.0
15.0
15.0
0.58
0.118
14.67
-0.09
-0.12
NK







O
NO
17.0
20.0
22.0
2.52
0.591
19.67
1.65
1.62
NT
14.0
15.0
16.0
1.00
0.236
15.00
0.03
0.00
0







O
OF







O
OS








OX







O
OY







O
F







O'
PA







O
PB
15.0
15.0
15.0
0.00
0.000
15.00
0.03
0.00
PG







•'
PI







9
PM







•








V
PB








PV
12.0
21.0
18.0
4.58
1.120
17.00
0.72
0.69
PW








Q
20.0
18.0
16.0
2.00
0.473
18.00
1.07
1.04
QC







9
QJ







'9
QP







9
QQ







_ •
QT







•
QU
12.0
15.0
17.0
2.52
0.591
14.67
-0.09
-0.12
QW
13.0
15.0
14.0
1.00
0.236
14.00
-0.32
-0.35
QX







•
QZ
13.0
13.0
14.0
0.58
0.118
13.33
-0.55
-0.58
RC







•
BD








RE







*9
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
•!]• s Below control limit
	-y
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994	21/44
r
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RF








RG







•
RJ







•
RK







•
RL








RM
15.0
16.0
17.0
1.00
0.236
16.00
0.38
0.35
RP







•
RR







•
RY
380
30.0
28.0,
5:29
L345;
32:00
5.92
5i89 x
RZ







•
S
14.0
14.0
15.0
0.58
0.118
14.33
-0.20
-0.23
sc
15.0
15.0
15.0
0.00
0.000
15.00
0.03
0.00
SD
16.0
15.0
17.0
1.00
0.236
16.00
0.38
0.35
SF
14.0
14.0
14.0
0.00
0.000
14.00
-0.32
-0.35
SI
13.0
14.0
13.0
0.58
0.118
13.33
-0.55
-0.58
SL







*
SM
12.0
12.0
13.0
0.58
0.118
12.33
-0.89
-0.92
SN







9
SO







m
SR







•
SS
15.0
14.0
14.0
0.58
0.118
14.33
-0.20
-0.23
ST
15.0
15.0
14.0
0.58
0.118
14.67
-0.09
-0.12
SW








sx







«
sz
14.0
14.0
15.0
0.58
0.118
14.33
-0.20
-0.23
T
12.0
12.0
14.0
1.15
0.236
12.67
-0.78
-0.81
TD
11.0
12.0
10.0
1.00
0.236
11.00
-1.36
-1.39
TE
14.0
13.0
13.0
0.58
0.118
13.33
-0.55
-0.58
TH







«
TI
19.0
17.0
17.0
1.15
0.236
17.67
0.95
0.92
TL
15.0
13.0
15.0
1.15
0.236
14.33
-0.20
-0.23
TN








TQ
13.0
14.0
15.0
1.00
0.236
14.00
-0.32
-0.35
TS







w
TY







+
U
13.0
12.0
13.0
0.58
0.118
12.67
-0.78
-0.81
UA







•
UE
15.0
15.0
15.0
0.00
0.000
15.00
0.03
0.00
UG








UK







•
UN
13.0
14.0
13.0
0.58
0.118
13.33
-0.55
-0.58
UP
12.0
16.0
14.0
2.00
0.473
14.00
-0.32
-0.35
UQ







•
UW







•
UY







•
• = No data submitted TAG SYMBOLS IT = Above control limit
. 0 = Insufficient data	x = Determined to be an outlier	li = Below control limit
-------
22/44

EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994

Strontium-90






'




Exper.
Rng anal

Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
VC







p:
VG
17.0
18.0
17.0
0.58
0.118
17.33
0.84
0.81
VI








VJ







e
VM







c>
VN







0
vo
23.0
23.0
21.0
1.15
0.236
22.33
2.57
2.54
vq








VT







©
VLT







o
vx







o
w
14.0
15.0
15.0
0.58
0.118
14.67
-0.09
-0.12
X
15.0
18.0
14.0
2.08
0.473
15.67
0.26
0.23
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
7.33

JY
14.33

SZ
15.33

CQ
7.33

DG
14.33

SS
15.33

A
11.00

TD
14.33

S
15.67

X
11.33

EB
14.33

MQ
15.67

HP
12.33

SM
14.33

FU
15.67

EL
12.67

U
14.33

CJ
15.67

E
12.67

T
14.33

CE
16.00

SD
13.33

UN
14.33

CA
16.00

RM
13.33

TE
14.33

BM
16.00

BH
13.33

SI
14.33

AL
16.00

BC
13.33

QZ
14.33

AE
16.33

LT
13.33

IC
14.67

W
16.33

CK
13.33

HK
14.67

ST
16.33

CG
13.33

BG
14.67

QU
16.33

AK
13.67

I
14.67

NJ
17.00

PV
13.67

DO
14.67

M
17.33

VG
13.67

DE
14.67

JS
17.33

CS
13.67

DD
14.67

BA
17.67

TT
13.67

BO
14.67

AZ
18.00

Q
13.67

AF
15.00

UE
18.33

K
14.00

UP
15.00

sc
18.33

-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
23/44
Strontium-90
% responding labs	Frequency distribution
20-
10-
¦4
1	1—		1	— y--y—-t*1*11 T * I	1	1	""I—
-6	-4	-2	0	+2	+4	+4
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
20-
10-
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994	24/44
Cobalt-60	Statistical Summary	193 Participants
The known value of this nuclide is 40.0 pCi/I 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
Statistic		Respondents	Non-outliers
Mean
40.54
Grand Avg 39.43
Std. Dev.
6.49
2.65
Variance
42.09
7.00
% Coef. of Var.
16.00
6.71
% deviation of mean from known value
1.36
-1.43
Norm. dev. of mean from known value
0.08
-0.22
Median
39.33
39.33
% deviation of median from known value
-1.67
-1.67
Norm. dev. of median from known value
-0.10
-0.25
-------
25/44	EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
32.0
32.0
36.0
2.31
0.473
33.33
-2.11
-2.31
AE
35.0
35.0
39.0
2.31
0.473
36.33
-1.07
-1.27
AF
41.0
39.0
37.0
2.00
0.473
39.00
-0.15
-0.35
AH







C
AI
40.0
41.0
41.0
0.58
0.118
40.67
0.43
0.23
AJ








AK
38.0
37.0
39.0
1.00
0.236
38.00
-0.49
-0.69
AL
48.0
66.0
49.0
4.36
0.946
51.00
4.01
3.81 x
AO







0-
AP
37.0
44.0
35.0
4.73
1.120
38.67
-0.26
-0.46
AR







O
AU
41.0
39.0
39.0
1.15
0.236
39.67
0.08
-0.12
AW
35.0
35.0
40.0
2.89
0.591
36.67
-0.96
-1.15
AZ
30.0
41.0
34.0
5.57
1.570
35.00
-1.53
-1.73
BA
41.0
39.0
41.0
1.15
0.236
40.33
0.31
0.12
BC
38.0
38.0
39.0
0.58
0.118
38.33
-0.38
-0.58
BG
42:0

61.0





BH
39.0
39.0
40.0
0.58
0.118
39.33
-0.03
-0.23
BK
39.0
39.0
38.0
0.58
0.118
38.67
-0.26
-0.46
BL
40.0
37.0
39.0
1.53
0.354
38.67
-0.26
-0.46
BM
41.0
39.0
43.0
2.00
0.473
41.00
0.55
0.35
BN
39.0
39.0
39.0
0.00
0.000
39.00
-0.15
-0.35
BO
36.0
42.0
37.0
3.21
0.709
38.33
-0.38
-0.58
BS







•/
BW
53.0
46.0
53.0
4.04
0.827
50.67
3.89
3.70 x
C
38.0
40.0
40.0
1.15
0.236
39.33
-0.03
-0.23
CA
40.0
43.0
39.0
2.08
0.473
40.67
0.43
0.23
CE
40.0
41.0
40.0
0.58
0.118
40.33
0.31
0.12
CG







•
CJ
40.0
41.0
42.0
1.00
0.236
41.00
0.55
0.35
CK
43.0
42.0
42.0
0.58
0.118
42.33
1.01
0.81
CM
45.0
44.0
49.0
2.65
0.591
46.00
2.28
2.08
CO
41.0
37.0
39.0
2.00
0.473
39.00
-0.15
-0.35
CP
40.0
40.0
41.0
0.58
0.118
40.33
0.31
0.12
CQ
43.0
47.0
48.0
2.65
0.591
46.00
2.28
2.08
CS
43.0
44.0
45.0
1.00
0.236
44.00
1.58
1.39
CX
43.0
45.0
52.0
4.73
1.120
46.67
2.51
2.31
D
86.0
71.0
76.0
7.64
2.470
77.67
13.25
,13.05 x
DB







•
DD
32.0
35.0
32.0
1.73
0.354
33.00
-2.23
-2.42
DE
40.0
40.0
40.0
0.00
0.000
40.00
0.20
0.00
DG
41.0
40.0
40.0
0.58
0.118
40.33
0.31
0.12
DJ








DL
36.0
38.0
40.0
2.00
0.473
38.00
-0.49
-0.69
DM
42.0
40.0
42.0
1.15
0.236
41.33
0.66
0.46
• = No data submitted	TAG SYMBOLS	It = Above control limit
[0 = Insufficient data	x = Determined to be an outlier	Jj- = Below control limit
v- - - ¦ ' ¦—			,					J1
-------
				
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994	26/44
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DO
39.0
39.0
35.0
2.31
0.473
37.67
-0.61
-0.81

DS








•
DT
41.0
41.0
39.0
1.15
0.236
40.33
0.31
0.12

DZ
35.0
36.0
35.0
0.58
0.118
35.33
-1.42
-1.62

E
40.0
40.0
41.0
0.58
0.118
40.33
0.31
0.12

EB
39.0
39.0
39.0
0.00
0.000
39.00
-0.15
-0.35

EL
42.0
39.0
39.0
1.73
0.354
40.00
0.20
0.00

EO








•
ER








•
z£\r









EX
42.0
39.0
41.0
1.53
0.354
40.67
0.43
0.23

FF








•
FJ
38.0
39.0
40.0
1.00
0.236
39.00
-0.15
-0.35

FL
39.0
41.0
41.0
1.15
0.236
40.33
0.31
0.12

FN








•
FU
40.0
40.0
41.0
0.58
0.118
40.33
0.31
0.12

FZ
43.0
45.0
46.0
1.53
0.354
44.67
1.82
1.62

GE
40.0
38.0
36.0
2.00
0.473
38.00
-0.49
-0.69

GI
38.0
41.0
39.0
1.53
0.354
39.33
-0.03
-0.23

GQ
41.0
41.0
43.0
1.15
0.236
41.67
0.78
0.58

GT








V
GZ








~
HI









HK
40.0
40.0
40.0
0.00
0.000
40.00
0.20
0.00

HL
41.0
41.0
41.0
0.00
0.000
41.00
0.55
0.35

HP
37.0
40.0
39.0
1.53
0.354
38.67
-0.26
-0.46

HX








•
I
43.0
42.0
39.0
2.08
0.473
41.33
0.66
0.46

IC
40.0
41.0
41,0
0.58
0.118
40.67
0.43
0.23

ED








•
IE








»
J
39.0
40.0
39.0
0.58
0.118
39.33
-0.03
-0.23

JE
38.0
40.0
39.0
1.00
0.236
39.00
-0.15
-0.35

JG
39.0
41.0
38.0
1.53
0.354
39.33
-0.03
-0.23

JN









JQ








•
JS
38.U
36.0
37.0
1.00
0.236
37.00
-0.84
-1.04

JX









JY
45.0
47.0
42.0
2.52
0.591
44.67
1.82
1.62

K
35.0
33.0
34.0
1.00
0.236
34.00
-1.88
-2.08

KE








¦*'
KT









KX
40.0
38.0
36.0
2.00
0.473
38.00
-0.49
-0.69

L
38.0
38.0
42.0
2.31
0.473
39.33
-0.03
-0.23

LF
37.0
38.0
37.0
0.58
0.118
37.33
-0.73
-0.92

6	
Q •
in »i
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be em outlier
IT s Above control limit
•H = Below control limit
			
-------
ft	








	^
27/44
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994


Cobalt-60








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LG








•
LL








9
LR
41.0
36.0
44.0
4.04
0.945
40.33
0.31
0.12

LT
38.0
40.0
36.0
2.00
0.473
38.00
-0.49
-0.69

M
38.0
38.0
37.0
0.58
0.118
37.67
-0.61
-0.81

MA
43.0
41.0
41.0
1.15
0.236
41.67
0.78
0.58

MP
35.0
36.0
35.0
0.58
0.118
35.33
-1.42
-1.62

MQ
38.0
38.0
39.0
0.58
0.118
38.33
-0.38
-0.58

MY
36.0
39.0
37.0
1.53
0.354
37.33
-0.73
-0.92

MY
73.0
74.0
73.0
0.58
0.118
73.33
11.75
11.55
X
N;








•
NA








•
NH
41.0
37.0
37.0
2.31
0.473
38.33
-0.38
-0.58

NJ
38.0
38.0
39.0
0.58
0.118
38.33
-0.38
-0.58

NK
41.0
40.0
40.0
0.58
0.118
40.33
0.31
0.12

NO
23.0
26.0
28.0
2.52
0.591
25.67
-4.77.
-4.97
X
NT








;o
O
41.0
41.0
42.0
0.58
0.118
41.33
0.66
0.46

OF








o
OS








O
OX








9
OY








9
P
65.0
66.0
52.0
2.08
0.473
54.33
5.16
4.97
X
PA








'•
PB
40.0
39.0
40.0
0.58
0.118
39.67
0.08
-0.12

PG








'• •
PI
38.0
38.0
39.0
0.58
0.118
38.33
-0.38
-0.58

PM
46.0
44.0
37.0
4.73
1.120
42.33
1.01
0.81

PQ








•
PR








•
PV
42.0
41.0
46.0
2.65
0.591
43.00
1.24
1.04

PW
37.0
35.0
36.0
1.00
0.236
36.00
-1.19
-1.39

Q
39.0
38.0
37.0
1.00
0.236
38.00
-0.49
-0.69

QC








•
QJ
40.0
44.0
39.0
2.65
0.591
41.00
0.55
0.35

QP
38.0
37.0
36.0
1.00
0.236
37.00
-0.84
-1.04

QQ








•
QT
37.0
38.0
38.0
0.58
0.118
37.67
-0.61
-0.81

QU








•
QW








•
QX
49.0
50.0
49.0
0.58
0.118
49.33
3.43
3.23
X
QZ
37.0
36.0
37.0
0.58
0.118
36.67
-0.96
-1.15

RC








~
RD








•
RE









• =
No data submitted

TAG SYMBOLS

It = Above control limit
[0e
Insufficient data
x =
Determined to be an outlier
It = Below control limit
•V
-------
	

EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
	
28/44
Cobalt-60







\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RF;








" •
EG








•
RJ








w
RE








m
EL








w.
RM
37.0
39.0
36.0
1.53
0.354
37.33
-0.73
-0.92

RP








¦ • 1
RR








•
RV
70.0
74.0
79.0
4.51
1.120
74-33
12.09
11.89
X
RZ
39.0
38.0
40.0
1.00
0.236
39.00
-0.15
-0.35

S
39.0
40.0
40.0
0.58
0.118
39.67
0.08
-0.12

sc
33.0
34.0
36.0
1.53
0.354
34.33
-1.76
-1.96

SD
42.0
39.0
41.0
1.53
0.354
40.67
0.43
0.23

SF
41.0
45.0
39.0
3.06
0.709
41.67
0.78
0.58

SI
45.0
37.0
42.0
4.04
0.945
41.33
0.66
0.46

SL








*
SM
35.0
35.0
36.0
0.58
0.118
35.33
-1.42
-1.62

SN
38.0
39.0
38.0
0.58
0.118
38.33
-0.38
-0.58

so









SR
33.0
36.0
41.0
4.04
0.945
36.67
-0.96
-1.15

SS
40.0
41.0
40.0
0.58
0.118
40.33
0.31
0.12

ST
38.0
37.0
35.0
1.53
0.354
36.67
-0.96
-1.15

SW








0
sx
40.0
39.0
39.0
0.58
0.118
39.33
-0.03
-0.23

sz
40.0
41.0
39.0
1.00
0.236
40.00
0.20
0.00

T
38.0
37.0
37.0
0.58
0.118
37.33
-0.73
-0.92

TD
41.0
40.0
40.0
0.58
0.118
40.33
0.31
0.12

TE
39.0
39.0
40.0
0.58
0.118
39.33
-0.03
-0.23

TH
43.0
45.0
43.0
1.15
0.236
43.67
1.47
1.27

TI
42.0
42.0
45.0
1.73
0.354
43.00
1.24
1.04

TL
38.0
37.0
35.0
1.53
0.354
36.67
-0.96
-1.15

IN








•
TQ
38.0
37.0
38.0
0.58
0.118
37.67
-0.61
-0.81

TS
34.0
35.0
37.0
1.53
0.354
35.33
-1.42
-1.62

TY








•
U
41.0
41.0
41.0
0.00
0.000
41.00
0.55
0.35

UA








•
UE
39.0
41.0
40.0
1.00
0.236
40.00
0.20
0.00

UG








•
UK
50.0
47.0
48.0
1.53
0.354
48.33
3.09
2.89

UN
41.0
41.0
42.0
0.58
0.118
41.33
0.66
0.46

UP
36.0
37.0
38.0
1.00
0.236
37.00
-0.84
-1.04

UQ








*
uw
41.0
44.0
44.0
1.73
0.354
43.00
1.24
1.04

UY
46.0
41.0
42.0
2.65
0.591
43.00
1.24
1.04

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
10-
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
C(	









	^
29/44

EMSL-LV Performance Evaluation: Blind-B,
18-Oct-1994


[ Cobalt-60













Exper.
Rng anal


Normalized deviation

| Lab Res. 1
Res. 2
Res. 3 Sigma
(R + SR)
Average
(grand-avg) (known) Tag ||
VC
43.0
43.0
39.0 2.31
0.473
41.67
0.78
0.58

VG
39.0
42.0
35.0 3.R1
0.S27
38.67
-0.26
-0.46

VI










VJ









•
VM









**
VN










vo
41.0
41.0
40.0 0.58
0.118
40.67
0.43
0.23

VQ









w ..
VT
30.0
37.0
43.0 6.51
2.020
36.67
-0.96
-1.15

VU
38.0
37.0
38.0 0.58
0.118
37.67
-0.61
-0.81

vx









•
w
38.0
39.0
35.0 2.08
0.473
37.33
-0.73
-0.92

X 38.0 37.0
44.0 3.79
0.827
39.67
0.08
-0.12


Data sorted by Laboratory Average


3EBD
Average

Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
25.67

X
NO
37.67

M

39.33

L
33.00


DD
37.67

DO

39.33

JG
33.33


A
38.00

Q

39.33

J
34.00


K
38.00

LT

39.33

GI
34.33


SC
38.00

KX

39.33

C
35.00


AZ
38.00

GE

39.33

BH
35.33


TS
38.00

DL

39.67

X
35.33


SM
38.00

AK

39.67

S
35.33


MP
38.33

SN

39.67

PB
35.33


DZ
38.33

PI

39.67

AU
36.00


PW
38.33

NJ

40.00

UE
36.33


AE
38.33

NH

40.00

SZ
36.67


VT
38.33

MQ

40.00

HK
36.67


TL
38.33

BO

40.00

EL
36.67


ST
38.33

BC

40.00

DE
36.67


SR
38.67

VG

40.33

TD
36.67


QZ
38.67

HP

40.33

SS
36.67


AW
38.67

BL

40.33

NK
37.00


UP
38.67

BK

40.33

LR
37.00


QP
38.67

AP

40.33

FU
37.00


JS
39.00

RZ

40.33

FL
37.33


W
39.00

JE

40.33

E
37.33


T
39.00

FJ

40.33

DT
37.33


RM
39.00

EB

40.33

DG
37.33


MV
39.00

CO

40.33

CP
37.33


LF
39.00

BN

40.33

CE
37.67


VU
39.00

AF

40.33

BA
37.67


TQ
39.33

TE

40.67

VO
37.67


QT
39.33

SX

40.67

SD
• = No data submitted

TAG SYMBOLS


ft s Above control limit
0 = Insufficient data
V-	

x = Determined to be an outlier

•li s Below control limit
	-v
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
30/44
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
40.67

IC
41.33

DM
44.67

JY
40.67

EX
41.67

VC
44.67

FZ
40.67

CA
41.67

SF
46.00

CQ
40.67

AI
41.67

MA
46.00

CM
41.00

U
41.67

GQ
46.67

CX
41.00

QJ
42.33

PM
48.33

UK
41.00

HL
42.33

CK
49.33
X
ox
41.00

CJ
43.00

UY
50.67
X
BW
41.00

BM
43.00

UW
51.00
X
AL
41.33

UN
43.00

TT
54.33
X
P
41.33

SI
43.00

PV
73.33
X
MY
41.33

o
43.67

TH
74.33
X
RV
41.33

I
44.00

CS
77.67
X
D
Cobalt-60
% responding labs
Frequency distribution
10-
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
.-.¦ifhHmlijiJ
t	[ — |	| ¦ [	, ~ T ~ ~T . ~ j"
•6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
I
• s No data submitted TAG SYMBOLS tf s Above control limit
0 = Insufficient data	x = Determined to be an outlier	= Below control limit j
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
31/44
Cesium-134	Statistical Summary	193 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
67(34.7 %) Failed to respond ,
. 120(62.2 %) Within all limits
# \J ~ '
* \ l\
* NJ IV
# \ I v
# NJ Pv
* xl (S.
mmx
1(0.5 %) In warning zone
5(2.6 %) Outliers
r
i i
but within control
Statistic
Respondents
Non-outliers
Mean
19.16
Grand Avg 18.45
Std. Dev.
4.05
1.78
Variance
16.38
3.16
% Coef. of Var.
21.12
9.64
% deviation of mean from known value
-4.18
-7.73
Norm. dev. of mean from known value
-0.21
-0.87
Median
18.33
18.33
% deviation of median from known value
-8.33
-8.33
Norm. dev. of median from known value
-0.41
-0.94
5(4.0 %) More than 3 norm. S.D.
1 (0.8 %) Between 2 and 3 norm. S.D.'
.89(70.6 %) Within 1 norm. S.D.
of known value
% 31(24.6 %) Between 1 and 2 norm. S.D.
-------
32/44	EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
15.0
15.0
17.0
1.15
0.236
15.67
-0.97
-1.50
AE
17.0
19.0
19.0
1.15
0.236
18.33
-0.04
-0.58
AF
16.0
18.0
17.0
1.00
0.236
17.00
-0.50
-1.04
AH








AI
18.0
19.0
18.0
0.58
0.118
18.33
-0.04
-0.58
AJ







*.
AK
20.0
19.0
17.0
1.53
0.354
18.67
0.07
-0.46
AL
18.0
17.0
15.0
1.53
0.354
16.67
-0.62
-1.15
AO







•
AP
20.0
25.0
25.0
2.89
0.591
23.33
1.69
1.15
AR







•
AU
20.0
17.0
17.0
1.73
0.354
18.00
-0.16
-0.69
AW
19.0
20.0
20.0
0.58
0.118
19.67
0.42
-0.12
AZ
19.0
20.0
22.0
1.53
0.354
20.33
0.65
0.12
BA
17.0
15.0
17.0
1.15
0.236
16.33
-0.73
-1.27
BC
17.0
18.0
18.0
0.58
0.118
17.67
-0.27
-0.81
BG
23.0






0
BH
16.0
17.0
18.0
1.00
0.236
17.00
-0.50
-1.04
BK
18.0
20.0
20.0
1.15
0.236
19.33
0.30
-0.23
BL
20.0
21.0
18.0
1.53
0.354
19.67
0.42
-0.12
BM
19.0
19.0
18.0
0.58
0.118
18.67
0.07
-0.46
BN
17.0
18.0
18.0
0.58
0.118
17.67
-0.27
-0.81
BO
18.0
20.0
18.0
1.15
0.236
18.67
0.07
-0.46
BS








BW
37.0
33.0
37.0
2.31
0.473
35.67
5.96
6.43 x
C
17.0
18.0
18.0
0.58
0.118
17.67
-0.27
-0.81
CA
20.0
18.0
18.0
1.15
0.236
18.67
0.07
-0.46
CE
18.0
19.0
20.0
1.00
0.236
19.00
0.19
-0.35
CG







•
CJ
20.0
22.0
23.0
1.53
0.354
21.67
1.11
0.58
CK
20.0
19.0
20.0
0.58
0.118
19.67
0.42
-0.12
CM
21.0
19.0
19.0
1.15
0.236
19.67
0.42
-0.12
CO
20.0
19.0
16.0
2.08
0.473
18.33
-0.04
-0.58
CP
18.0
18.0
18.0
0.00
0.000
18.00
-0.16
-0.69
CQ
20.0
21.0
22.0
1.00
0.236
21.00
0.88
0.35
cs
20.0
21.0
22.0
1.00
0.236
21.00
0.88
0.35
cx
23.0
27.0
23.0
2.31
0.473
24.33
2.04
1.50
D
39.0
35.0
34.0
2.65
0.591
36:00
6.08
5;64 x
DB







•
DD
16.0
15.0
15.0
0.58
0.118
15.33
-1.08
-1.62
DE
19.0
20.0
20.0
0.58
0.118
19.67
0.42
-0.12
DG
18.0
18.0
17.0
0.58
0.118
17.67
-0.27
-0.81
DJ







• •
DL
18.0
17.0
16.0
1.00
0.236
17.00
-0.50
-1.04
DM
21.0
20.0
20.0
0.58
0.118
20.33
0.65
0.12
• = No data submitted	TAG SYMBOLS	ft = Above control limit
I 0 = Insufficient data	x = Determined to be an outlier	JJ- = Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994	33/44
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DO
25.0
16.0
15.0
5.51
1.345
18.67
0.07
-0.46
DS







•
DT
18.0
21.0
19.0
1.53
0.354
19.33
0.30
-0.23
DZ
17.0
18.0
19.0
1.00
0.236
18.00
-0.16
-0.69
E
17.0
18.0
19.0
1.00
0.236
18.00
-0.16
-0.69
EB
19.0
18.0
18.0
0.58
0.118
18.33
-0.04
-0.58
EL
18.0
20.0
19.0
1.00
0.236
19.00
0.19
-0.35
EO








ER








EV








EX
21.0
17.0
20.0
2.08
0.473
19.33
0.30
-0.23
FF.







,
FJ
19.0
18.0
19.0
0.58
0.118
18.67
0.07
-0.46
FL
18.0
19.0
19.0
0.58
0.118
18.67
0.07
-0.46
FN'







V
FU
19.0
18.0
18.0
0.58
0.118
18.33
-0.04
-0.58
FZ
19.0
17.0
18.0
1.00
0.236
18.00
-0.16
-0.69
GE
16.0
17.0
18.0
1.00
0.236
17.00
-0.50
-1.04
GI
18.0
18.0
17.0
0.58
0.118
17.67
-0.27
-0.81
GQ
17.0
18.0
18.0
0.58
0.118
17.67
-0.27
-0.81
GT







•
GZ







•
HI







•
HK
19.0
18.0
18.0
0.58
0.118
18.33
-0.04
-0.58
HL
18.0
18.0
18.0
0.00
0.000
18.00
-0.16
-0.69
HP
18.0
17.0
18.0
0.58
0.118
17.67
-0.27
-0.81
HX








I
18.0
21.0
22.0
2.08
0.473
20.33
0.65
0.12
IC
20.0
21.0
23.0
1.53
0.354
21.33
1.00
0.46
ro







•
EE







•
J
17.0
18.0
17.0
0.58
0.118
17.33
-0.39
-0.92
JE
17.0
18.0
17.0
0.58
0.118
17.33
-0.39
-0.92
JG
16.0
17.0
14.0
1.53
0.354
15.67
-0.97
-1.50
JN







•
JQ







•
JS
18.0
18.0
17.0
0.58
0.118
17.67
-0.27
-0.81
JX







•
JY
19.0
21.0
20.0
1.00
0.236
20.00
0.54
0.00
K
19.0
16.0
16.0
1.73
0.354
17.00
-0.50
-1.04
KE







•
KT








KX
20.0
21.0
19.0
1.00
0.236
20.00
0.54
0.00
L
20.0
18.0
18.0
1.15
0.236
18.67
0.07
-0.46
LF
19.0
18.0
19.0
0.58
0.118
18.67
0.07
-0.46
• = No data submitted TAG SYMBOLS 1T = Above control limit
0 = Insufficient data	x = Determined to be an outlier	JJ- = Below control limit
-------
(r	








	^
34/44
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994


Cesinm-134








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LG








»
LL








~
LR
29.0
31.0
24.0
3.61
0.827
28.00
3.31
2.77

LT
17.0
17.0
17.0
0.00
0.000
17.00
-0.50
-1.04

M
20.0
21.0
22.0
1.00
0.236
21.00
0.88
0.35

MA
19.0
18.0
18.0
0.58
0.118
18.33
-0.04
-0.58

MP
15.0
17.0
15.0
1.15
0.236
15.67
-0.97
-1.50

MQ
17.0
17.0
18.0
0.58
0.118
17.33
-0.39
-0.92

MV
14.0
15.0
16.0
1.00
0.236
15.00
-1.20
-1.73

MY
34.0
32.0
33.0
1;00
0.236
33.00
6.04
4.50
X
N








•
NA








e
NH
18.0
18.0
17.0
0.58
0.118
17.67
-0.27
-0.81

NJ
20.0
17.0
18.0
1.53
0.354
18.33
-0.04
-0.58

NK
18.0
18.0
17.0
0.58
0.118
17.67
-0.27
-0.81

NO
45.0
46.0
47.0
1.00
0.236
46.00
9154
9.01
X
NT








o
O
19.0
19.0
19.0
0.00
0.000
19.00
0.19
-0.35

OF








a
OS









OX








9
OY








•
P
20.0
22.0
20.0
1.15
0.236
20.67
0.77
0.23

PA








#
PB
22.0
21.0
20.0
1.00
0.236
21.00
0.88
0.35

PG








~
PI
17.0
17.0
17.0
0.00
0.000
17.00
-0.50
-1.04

PM
16.0
18.0
17.0
1.00
0.236
17.00
-0.50
-1.04

PQ








•
PR








•
PV
16.0
16.0
20.0
2.31
0.473
17.33
-0.39
-0.92

PW
18.0
17.0
16.0
1.00
0.236
17.00
-0.50
-1.04

Q
17.0
18.0
18.0
0.58
0.118
17.67
-0.27
-0.81

QC








•
QJ
17.0
17.0
16.0
0.58
0.118
16.67
-0.62
-1.15

QP
20.0
15.0
18.0
2.52
0.591
17.67
-0.27
-0.81

QQ








• -
QT
17.0
17.0
17.0
0.00
0.000
17.00
-0.50
-1.04

Qu








•
QW








• -
QX
21.0
21.0
21.0
0.00
0.000
21.00
0.88
0.35

QZ
17.0
16.0
16.0
0.58
0.118
16.33
-0.73
-1.27

HC








*
RD








•
RE









• =
No data submitted

TAG SYMBOLS

ft s Above control limit
1 0 s
V	
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
	y
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994	35/44
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RF








RG







*
RJ








RE







«
RL








RM
22.0
20.0
18.0
2.00
0.473
20.00
0.54
o.oo
HP1







• -
RR







•
RV
33.0
33.0
27.0
3.46
0.709
31.00:
4.35
3,81 x
RZ
18.0
17^0
19.0
1.00
0.236
18.00
-0.16
-0.69
S
18.0
18.0
18.0
0.00
0.000
18.00
-0.16
-0.69
sc
16.0
15.0
18.0
1.53
0.354
16.33
-0.73
-1.27
SD
22.0
16.0
25.0
4.58
1.120
21.00
0.88
0.35
SF
17.0
17.0
17.0
0.00
0.000
17.00
-0.50
-1.04
SI
22.0
19.0
19.0
1.73
0.354
20.00
0.54
0.00
SL







-/•
SM
18.0
16.0
17.0
1.00
0.236
17.00
-0.50
-1.04
SN
15.0
19.0
200
2.65
0.591
18.00
-0.16
-0.69
SO







•
SR
15.0
19.0
22.0
3.51
0.827
18.67
0.07
-0.46
SS
19.0
19.0
20.0
0.58
0.118
19.33
0.30
-0.23
ST
18.0
17.0
17.0
0.58
0.118
17.33
-0.39
-0.92
SW







•
sx
18.0
18.0
20.0
1.15
0.236
18.67
0.07
-0.46
sz
18.0
17.0
18.0
0.58
0.118
17.67
-0.27
-0.81
T
16.0
17.0
17.0
0.58
0.118
16.67
-0.62
-1.15
TD
18.0
19.0
18.0
0.58
0.118
18.33
-0.04
-0.58
TE
18.0
17.0
18.0
0.58
0.118
17.67
-0.27
-0.81
TH
19.0
18.0
20.0
1.00
0.236
19.00
0.19
-0.35
TI
18.0
19.0
18.0
0.58
0.118
18.33
-0.04
-0.58
TL
21.0
21.0
15.0
3.46
0.709
19.00
0.19
-0.35
TN







- •
TQ
18.0
17.0
16.0
1.00
0.236
17.00
-0.50
-1.04
TS
17.0
18.0
15.0
1.53
°-354
16.67
-0.62
-1.15
TY







, •
U
19.0
21.0
20.0
1.00
0.236
20.00
0.54
0.00
UA







•
UE
20.0
21.0
20.0
0.58
0.118
20.33
0.65
0.12
UG







•
UK
12.0
27.0
19.0
7.51
2.470
19.33
0.30
-0.23
UN
19.0
18.0
18.0
0.58
0.118
18.33
-0.04
-0.58
UP
17.0
17.0
19.0
1.15
0.236
17.67
-0.27
-0.81
4uq'







' 9
uw
19.0
20.0
19.0
0.58
0.118
19.33
0.30
-0.23
UY
21.0
ld.o
18.0
1.53
0.354
19.33
0.30
-0.23
• s No data submitted	TAG SYMBOLS	ft s Above control limit
t 0 — Insufficient data	x = Determined to be an outlier	li = Below control limit
'¦¦¦=-— ' - - '—'-¦¦¦¦	--	1 ¦	- —v
-------
36/44
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
Cesium-134
Lab Res. 1
Res. 2 Res. 3
Exper. Rng anal	Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
VC
VG
VI
VJ
VM
VN
vo
VQ
VT
VU
vx
w
X
19.0
16.0
19.0
17.0
19.0
18.0
0.00
1.00
0.000
0.236
19.00
17.00
0.19
-050
-0.35
-1 04.
18.0
14.0
17.0
18.0
17.0
19.0
17.0
17.0
18.0
16.0
19.0
20.0
17.0
17.U
17.0
0.58
3.00
0.00
0.58
0.58
0.118
0.709
0.000
0.118
0.118

18.67
17.00
1700
17.67
16.67
0.07
-0.50
-0.50
-0.27
-0.62
-0.46
-1.04
-1.04
-0.81
-1.15

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
15.00

MV
17.33

ST
18.00

AU
15.33

DD
17.33

PV
18.33

UN
15.67

MP
17.33

MQ
18.33

TI
15.67

JG
17.33

JE
18.33

TD
15.67

A
17.33

J
18.33

NJ
16.33

SC
17.67

W
18.33

MA
16.33

QZ
17.67

UP
18.33

HK
16.33

BA
17.67

TE
18.33

FU
16.67

X
17.67

SZ
18.33

EB
16.67

TS
17.67

QP
18.33

CO
16.67

T
17.67

Q
18.33

AI
16.67

QJ
17.67

NK
18.33

AE
16.67

AL
17.67

NH
18.67

VO
17.00

VU
17.67

JS
18.67

sx
17.00

VT
17.67

HP
18.67

SR
17.00

VG
17.67

GQ
18.67

LF
17.00

TQ
17.67

GI
18.67

L
17.00

SM
17.67

DG
18.67

FL
17.00

SF
17.67

C
18.67

FJ
17.00

QT
17.67

BN
18.67

DO
17.00

PW
17.67

BC
18.67

CA
17.00

PM
18.00

SN
18.67

BO
17.00

PI
18.00

S
18.67

BM
17.00

LT
18.00

RZ
18.67

AK
17.00

K
18.00

HL
19.00

VC
17.00

GE
18.00

FZ
19.00

TL
17.00

DL
18.00

E
19.00

TH
17.00

BH
18.00

DZ
19.00

O
17.00

AF
18.00

CP
19.00

EL
• = No data submitted

TAG SYMBOLS

If
= Above control limit
0 = Insufficient data

x = Determined to be an outlier

= Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
37/44
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
19.00

CE
20.00

U
21.00

M
19.33

UY
20.00

SI
21.00

CS
19.33

UW
20.00

RM
21.00

CQ
19.33

UK
20.00

KX
21.33

IC
19.33

ss
20.00

JY
21.67

CJ
19.33

EX
20.33

UE
23.33

AP
19.33

DT
20.33

I
24.33

CX
19.33

BK
20.33

DM
28.00

LR
19.67

DE
20.33

AZ
31.00
X
RV
19.67

CM
20.67

P
33.00
X
MY
19.67

CK
21.00

SD
35.67
X
BW
19.67

BL
21.00

QX
36.00
X
D
19.67

AW
21.00

PB
46.00
X
NO
% responding labs
10-
Frequency distribution
-2	0	+2
Normalized deviation of the mean from the known value
responding labs
Frequency distribution
20-
10-

	fa
-6
i	r	I	r
t	r
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
• = No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II s Below control limit
V-	—	rri/
-------
EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
38/44
Cesium-137	Statistical Summary	193 Participants
The known value of this nuclide is 39.0 pCi/1 with an expected precision of 5.0; the control limits
are 30.3 to 47.7; the warning regions are 30.3 to 33.2 and 44.8 to 47.7
66(34.2 %) Failed to respond .
; 106(54.9 %) Within all limits
4(2.1 %) Out of control
but not an outlier
Statistic
TTI
Respondents
--11 (5.7 %) In warning zone
but within control
Non-outliers
Mean
42.76
Grand Avg 41.73
Std. Dev.
6.97
2.66
Variance
48.60
7.06
% Coef. of Var.
16.30
6.37
% deviation of mean from known value
9.63
7.01
Norm. dev. of mean from known value
0.54
1.03
Median
41.67
41.33
% deviation of median from known value
6.84
5.98
Norm. dev. of median from known value
0.38
0.88
11 (8.7 %) More than 3 norm. S.D.
,68(53.5 %) Within 1 norm. S.D.
•	of known value
-------
6	A
39/44

EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994


Cesium-137








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
36.0
36.0
40.0
2.31
0.473
37.33
-1.52
-0.58

AE
39.0
41.0
42.0
1.53
0.354
40.67
-0.37
0.58

AF
39.0
41.0
42.0
1.53
0.354
40.67
-0.37
0.58

AH









AI
41.0
44.0
42.0
1.53
0.354
42.33
0.21
1.15

AJ








•
AK
43.0
42.0
43.0
0.58
0.118
42.67
0.32
1.27

AL
41.0
44.0
41.0
1.73
0.354
42.00
0.09
1.04

AO








•
AP
45.0
38.0
41.0
3.51
0.827
41.33
-0.14
0.81

AR








•
AU
39.0
42.0
40.0
1.53
0.354
40.33
-0.48
0.46

AW
48.0
45.0
44.0
2.08
0.473
45.67
1.36
2.31

AZ
40.0
42.0
43.0
1.53
0.354
41.67
-0.02
0.92

BA
41.0
38.0
37.0
2.08
0.473
38.67
-1.06
-0.12

BC
40.0
42.0
42.0
1.15
0.236
41.33
-0.14
0.81

BG
41.0
61.0
63.0
11.02
4.046
51.67
3.44
4.39
X
BH
43.0
44.0
43.0
0.58
0.118
43.33
0.55
1.50

BK
41.0
42.0
42.0
0.58
0.118
41.67
-0.02
0.92

BL
44.0
40.0
40.0
2.31
0.473
41.33
-0.14
0.81

BM
44.0
42.0
43.0
1.00
0.236
43.00
0.44
1.39

BN
42.0
42.0
43.0
0.58
0.118
42.33
0.21
1.15

BO
38.0
41.0
45.0
3.51
0.827
41.33
-0.14
0.81

BS








•
BW
69.0
68.0
69.0
0.58
0.118
68.67
9.33
10.28
X
C
40.0
39.0
40.0
0.58
0.118
39.67
-0.72
0.23

CA
40.0
43.0
43.0
1.73
0.354
42.00
0.09
1.04

CE
42.0
40.0
44.0
2.00
0.473
42.00
0.09
1.04

CG








•
CJ
39.0
43.0
43.0
2.31
0.473
41.67
-0.02
0.92

CK
45.0
44.0
48.0
2.08
0.473
45.67
1.36
2.31

CM
45.0
41.0
39.0
3.06
0.709
41.67
-0.02
0.92

CO
49.0
50.0
47.0
1.53
0.354
48.67
2.40
3.35
ft
CP
40.0
40.0
40.0
0.00
0.000
40.00
-0.60
0.35

CQ
46.0
48.0
49.0
1.53
0.354
47.67
2.06
3.00

cs
48.0
48.0
48.0
0.00
0.000
48.00
2.17
3.12
ft
cx
45.0
42.0
54.0
6.24
1.795
47.00
1.82
2.77

D
90.0
77.0
77.0
7.51
2.020
81.33
13.72
14.66
X
DB








•
DD
35.0
35.0
35.0
0.00
0.000
35.00
-2.33
-1.39

DE
39.0
40.0
41.0
1.00
0.236
40.00
-0.60
0.35

DG
43.0
44.0
42.0
1.00
0.236
43.00
0.44
1.39

DJ








•
DL
37.0
40.0
40.0
1.73
0.354
39.00
-0.95
0.00

DM
43.0
43.0
40.0
1.73
0.354
42.00
0.09
1.04

• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	J] = Below control limit
		—1y
-------


EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
		
40/44
Cesium-137







\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
46.0
41.0
41.0
2.89
0.591
42.67
0.32
1.27

DS









DT
49.0
46.0
38.0
5.69
1.570
44.33
0.90
1.85

DZ
35.0
35.0
35.0
0.00
0.000
35.00
-2.33
-1.39

E
41.0
44.0
45.0
2.08
0.473
43.33
0.55
1.50

EB
46.0
47.0
47.0
0.58
0.118
46.67
1.71
2.66

EL
39.0
43.0
42.0
2.0R
0.473
41.33
-0.14
0.81

EO








• '
ER









EV









EX
42.0
38.0
39.0
2.08
0.473
39.67
-0.72
0.23

FF








V
FJ
44.0
40.0
40.0
2.31
0.473
41.33
-0.14
0.81

FL
41.0
42.0
41.0
0.58
0.118
41.33
-0.14
0.81

FN








,•'
FU
44.0
39.0
38.0
3.21
0.709
40.33
-0.48
0.46

FZ
46.0
45.0
49.0
2.08
0.473
46.67
1.71
2.66

GE
40.0
40.0
37.0
1.73
0.354
39.00
-0.95
0.00

GI
40.0
42.0
42.0
1.15
0.236
41.33
-0.14
0.81

GQ
39.0
41.0
38.0
1.53
0.354
39.33
-0.83
0.12

GT









dt








•
HI








«
BK
43.0
43.0
43.0
0.00
0.000
43.00
0.44
1.39

HL
44.0
44.0
44.0
0.00
0.000
44.00
0.79
1.73

HP
45.0
46.0
45.0
0.58
0.118
45.33
1.25
2.19

HX









I
41.0
42.0
40.0
1.00
0.236
41.00
-0.25
0.69

IC
42.0
44 0
43.0
1.00
0.236
43.00
0.44
1.39

ID









IE








9.
J
41.0
42.0
42.0
U.58
0.118
41.67
-0.02
0.92

JE
40.0
40.0
40.0
0.00
0.000
40.00
-0.60
0.35

JG
42.0
42.0
44.0
1.15
0.236
42.67
0.32
1.27

JN








%
JQ








•
JS
41.0
40.0
39.0
1.00
0.236
40.00
-0.60
0.35

JX









JY
44.0
44.0
41.0
1.73
0.354
43.00
0.44
1.39

K
39.0
35.0
39.0
2.31
0.473
37.67
-1.41
-0.46

EE









KT








•
KX
38.0
40.0
42.0
2.00
0.473
40.00
-0.60
0.35

L
38.0
39.0
38.0
0.58
0.118
38.33
-1.18
-0.23

LF
39.0
42.0
39.0
1.73
0.354
40.00
-0.60
0.35

• =
No data submitted

TAG SYMBOLS

IT s= Above control limit
U-
Insufficient data
X S
Determined to be an outlier
U = Below control limit
-------
41/44	EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LG








•
LL








' •
LR
40.0
41.0
39.0
1.00
0.236
40.00
-0.60
0.35

LT
43.0
41.0
40.0
1.53
0.354
41.33
-0.14
0.81

M
40.0
41.0
41.0
0.58
0.118
40.67
-0.37
0.58

MA
45.0
46.0
44.0
1.00
0.236
45.00
1.13
2.08

MP
35.0
39.0
37.0
2.00
0.473
37.00
-1.64
-0.69

MQ
41.0
40.0
41.0
0.58
0.118
40.67
-0.37
0.58

MV
43.0
47.0
38.0
4.51
1.120
42.67
0.32
1.27

MY
81.0
82.0.
81.0
0.58
0.118
81.33
13.72
14.66
X
N








¦ •
NA








' *
NH
44.0
43.0
44.0
0.58
0.118
43.67
0.67
1.62

NJ
41.0
40.0
42.0
1.00
0.236
41.00
-0.25
0.69

NK
41.0
40.0
42.0
1.00
0.236
41.0C
-0.25
0.69

NO
22;0
23.0
23,0
0.58
0.118
22.67
-6.60
-5.66
X
NT









O
44.0
44.0
44.0
0.00
0.000
44.00
0.79
1.73

OF









OS









OX








•
OY








•
P
49.0
46.0
41.0
4.04
0.945
45.3 3
1.25
2.19

PA








•
PB
41.0
43.0
42.0
1.00
0.236
42.00
0.09
1.04

PG








•
PI
42.0
41.0
40.0
1.00
0.236
41.00
-0.25
0.69

PM
41.0
39.0
39.0
1.15
0.236
39.67
-0.72
0.23

PQ








•
PR








•
PV
46.0
45.0
37.0
4.93
1.120
42.67
0.32
1.27

PW
40.0
40.0
40.0
0.00
0.000
40.00
-0.60
0.35

Q
38.0
39.0
41.0
1.53
0.354
39.33
-0.83
0.12

QC








- •
QJ
40.0
41.0
41.0
0.58
0.118
40.67
-0.37
0.58

QP
42.0
43.0
44.0
1.00
0.236
43.30
0.44
1.39

QQ








•
QT
40.0
40.0
40.0
0.00
0.000
40.00
-0.60
0.35

QU









QW








•
QX
49.0
49.0
50.0
0.58
0.118
49.33
2.63
3.58
It
QZ
40.0
39.0
39.0
0.58
0.118
39.33
-0.83
0.12

RC








•
RD









RE








~
• = No data submitted	TAG SYMBOLS	IT s Above control limit
0 = Insufficient data	x s Determined to be an outlier	U = Below control limit
-------
f	








	v\


EMSL-LV Performance Evaluation: Blind-B, 18-Oct-1994
42/44
Cesium-137








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RF









BG








•
RJ"








•
RK








•
RL








A
RM
36.0
38.0
35.0
1.53
0.354
36.33
-1.87
-0.92

RP








• ,
RR









RV
71.0
7210
81.0
5.51
1.345
74:67
1L41
12:36
X
RZ
39.0
38.0
40.0
1.00
0.236
39.00
-0.95
0.00

S
40.0
42.0
41.0
1.00
0.236
41.00
-0.25
0.69

sc
41.0
42.0
37.0
2.65
0.591
40.00
-0.60
0.35

SD
40.0
43.0
46.0
3.00
0.709
43.00
0.44
1.39

SF
39.0
44.0
39.0
2.89
0.591
40.67
-0.37
0.58

SI
43.0
41.0
48.0
3.61
0.827
44.00
0.79
1.73

SL








•
SM
39.0
38.0
38.0
0.58
0.118
38.33
-1.18
-0.23

SN
39.0
39.0
40.0
0.58
0.118
39.33
-0.83
0.12

SO








• m
SR
37.0
36.0
41.0
2.65
0.591
38.00
-1.29
-0.35

ss
41.0
44.0
40.0
2.08
0.473
41.67
-0.02
0.92

ST
40.0
44.0
40.0
2.31
0.473
41.33
-0.14
0.81

SW








m
sx
42.0
43.0
41.0
1.00
0.236
42.00
0.09
1.04

sz
41.0
42.0
40.0
1.00
0.236
41.00
-0.25
0.69

T
41.0
42.0
42.0
0.58
0.118
41.67
-0.02
0.92

TD
44.0
45.0
42.0
1.53
0.354
43.67
0.67
1.62

TE
45.0
43.0
43.0
1.15
0.236
43.67
0.67
1.62

TH
46.0
46.0
47.0
0.58
0.118
46.33
1.59
2.54

TI
42.0
44.0
43.0
1.00
0.236
43.00
0.44
1.39

TL
43.0
43.0
38.0
2.89
0.591
41.33
-0.14
0.81

TN








•
TQ
42.0
39.0
44.0
2.52
0.591
41.67
-0.02
0.92

TS
40.0
41.0
42.0
1.00
0.236
41.00
-0.25
0.69

TY








•
U
44.0
42.0
44.0
1.15
0.236
43.33
0.55
1.50

UA








•
UE
42.0
43.0
43.0
0.58
0.118
42.67
0.32
1.27

UG








•
UK
57.0
42.0
49.0
7.51
2.470
49.33
2.63
3.58
ft
UN
45.0
44.0
46.0
1.00
0.236
45.00
1.13
2.08

UP
41.0
40.0
42.0
1.00
0.236
41.00
-0.25
0.69

UQ








•
uw
42.0
44.0
42.0
1.15
0.236
42.67
0.32
1.27

UY
41.0
42.0
43.0
1.00
0.236
42.00
0.09
1.04

• =
No data submitted

TAG SYMBOLS

IT s Above control limit
ill
IS
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
c<	








	^
43/44

EMSL-LV Performance Evaluation: Blind-B,
18-Oct-1994


f Cesium-137








Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VC
37.0
41.0
38.0 2.08
0.473
38.67 -1.06
-0.12

VG
42.0
38.0
42.0 2.31
0.473
40.67 -0.37
0.58

VI









VJ









VM








•
VN








•
vo
45.0
44.0
45.0 0.58
0.118
44.67 1.02
1.96

VQ








•
VT
32.0
38.0
44.0 6.00
1.795
38.00 -1.29
-0.35

VU
41.0
40.0
40.0 0.58
0.118
40.33 -0.48
0.46

vx








*
w
43.0
42.0
42.0 0.58
0.118
42.33 0.21
1.15

X
39.0
38.0
40.0 1.00
0.236
39.00 -0.95
0.00

SBBB
' •wi-A..





* ¦ '• '-Ji*,-. J,
v:--*vC*




Data sorted by Laboratory Average


Average

Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
22.67

X
NO
40.00

KX
41.33

EL
35.00


DZ
40.00

JS
41.33

BO
35.00


DD
40.00

JE
41.33

BL
36.33


RM
40.00

DE
41.33

BC
37.00


MP
40.00

CP
41.33

AP
37.33


A
40.33

VU
41.67

TQ
37.67


K
40.33

FU
41.67

T
38.00


VT
40.33

AU
41.67

SS
38.00


SR
40.67

VG
41.67

J
38.33


SM
40.67

SF
41.67

CM
38.33


L
40.67

QJ
41.67

CJ
38.67


VC
40.67

MQ
41.67

BK
38.67


BA
40.67

M
41.67

AZ
39.00


X
40.67

AF
42.00

UY
39.00


RZ
40.67

AE
42.00

sx
39.00


GE
41.00

UP
42.00

PB
39.00


DL
41.00

TS
42.00

DM
39.33


SN
41.00

SZ
42.00

CE
39.33


QZ
41.00

S
42.00

CA
39.33


Q
41.00

PI
42.00

AL
39.33


GQ
41.00

NK
42.33

W
39.67


PM
41.00

NJ
42.33

BN
39.67


EX
41.00

I
42.33

AI
39.67


C
41.33

TL
42.67

UW
40.00


sc
41.33

ST
42.67

UE
40.00


QT
41.33

LT
42.67

PV
40.00


PW
41.33

GI
42.67

MV
40.00


LR
41.33

FL
42.67

JG
40.00


LF
41.33

FJ
42.67

DO
• = No data submitted

TAG SYMBOLS

= Above control limit
(0s Insufficient data

x = Determined to be an outlier
H = Below control limit
	jj
-------
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
42.67

AK
43.67

TD
46.33

TH
43.00

TI
43.67

NH
46.67

FZ
43.00

SD
44.00

SI
46.67

EB
43.00

QP
44.00

O
47.00

CX
43.00

JY
44.00

HL
47.67

CQ
43.00

IC
44.33

DT
48.00
If
cs
43.00

HK
44.67

VO
48.67
tr
CO
43.00

DG
45.00

UN
49.33
it
UK
43.00

BM
45.00

MA
49.33
it
QX
43.33

U
45.33

P
51.67
X
BG
43.33

E
45.33

HP
68.67
X
BW
43.33

BH
45.67

CK
74.67
X
RV
43.67

TE
45.67

AW
81.33
81.33
X
X
MY
D
¦iwiii'ii————aamnnm
%
10
0
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
responding labs	Frequency distribution

% responding labs	Frequency distribution
10-
ulU
¦iw||1|IHI||Ib^iMbbM^«mI
O4®-!	1	1	1	¦—I	wf ¦¦¦¦T—"—I—¦	1	1	1-"
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
• s No data submitted	TAG SYMBOLS	IT = Above control limit
[05 Insufficient data	x = Determined to be an outlier	li g Below control limit
-------
United States	Office of Research and	EPA SUU/K-95/009
Environmental Protection	Development	January 1995
Agency	Washington, DC 20460
&EPA Gross Alpha-Beta
in Water Performance
Evaluation Study
A Statistical Evaluation of
the October 28, 1994 Data
0593RSD94 COV-009
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
October 28, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
A
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
V/
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-US 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; October 28, 1994.
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.
George Dilbeck
Chemist
Radicanalysis 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, 28*Oct-1994
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 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, 28-Oct-1994
The Range AnaIysis(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, 28-Oct-1994 3/18
Gross Alpha	Statistical Summary	211 Participants
The known value of this nuclide is 57.0 pCi/1 with an expected precision of 14.0; the control limits
are 32.7 to 81.3; the warning regions are 32.7 to 40.8 and 73.2 to 81.3
57(27.0 °/o) Failed to respond
. 114(54.0 %) Within all limits
2(0.9 %) Outliers •' /\|V, , 	


15(7.1 %) Out of control' V

23(10.9 %) In warning zone
but not an outlier
i t
i
but within control
Statistic
Respondents
Non-outliers
Mean
53.08
Grand Avg 52.30
Std. Dev.
15.55
13.99
Variance
241.65
195.82
% Coef. of Var.
29.28
26.76
% deviation of mean from known value
-6.87
-8.24
Norm. dev. of mean from known value
-0.25
-0.34
Median
53.00
53.00
% deviation of median from known value
-7.02
-7.02
Norm. dev. of median from known value
-0.26
-0.29
17(11.0 %) More than 3 norm. S.D
23(14.9 %) Between 2
72(46.8 %) Within 1 norm. S.D.
of known value
42(27.3 %) Between 1 and 2 norm. S.D.
-------
<¦ 				....
4/18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994
	^
Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
11.0
11.0
12.0
0.58
0.042
11.33
-5.07
-5.65

AE
68.0
68.0
65.0
1.73
0.127
67.00
1.82
1.24

AF
63.0
53.0
57.0
5.03
0.422
57.67
0.66
0.08

AH
28.0
29.0
36.0
4.36
0.338
31.00
-2.64
-3.22
u
AJ
57.0
54.0
56.0
1.53
0.127
55.67
0.42
-0.16

AK
51.0
51.0
49.0
1.15
0.084
50.33
-0.24
-0.82

AL
70.0
64.0
70.0
3.46
0.253
68.00
1.94
1.36

AN
37.0
39.0
37.0
1.15
0.084
37.67
-1.81
-2.39

AO








•
AP
54.0
57.0
48.0
4.58
0.380
53.00
0.09
-0.49

AR
29.0
27.0
28.0
1.00
0.084
28.00
-3.01
-3.59
u
AU
60.0
57.0
59.0
1.53
0.127
58.67
0.79
0.21

AW
63.0
64.0
61.0
1.53
0.127
62.67
1.28
0.70

AZ
59.0
51.0
47.0
6.11
0.506
52.33
0.00
-0.58

BA
51.0
52.0
55.0
2.08
0.169
52.67
0.05
-0.54

BB








•
BC
55.0
55.0
54.0
0.58
0.042
54.67
0.29
-0.29

BG








•
BH
37.0
36.0
38.0
1.00
0.084
37.00
-1.89
-2.47

BI
67.0
69.0
72.0
2.52
0.211
69.33
2.11
1.53

BK
38.0
41.0
49.0
5.69
0.464
42.67
-1.19
-1.77

BL
60.0
72.0
71.0
6.66
0.506
67.67
1.90
1.32

BM
49.0
45.0
47.0
2.00
0.169
47.00
-0.66
-1.24

BN
55.0
56.0
58.0
1.53
0.127
56.33
0.50
-0.08

BO
50.0
57.0
55.0
3.61
0.295
54.00
0.21
-0.37

BW








•
C
54.0
52.0
52.0
1.15
0.084
52.67
0.05
-0.54

CA
52.0
46.0
43.0
4.58
0.380
47.00
-0.66
-1.24

CE
59.0
55.0
50.0
4.51
0.380
54.67
0.29
-0.29

CG
47.0
46.0
52.0
3.21
0.253
48.33
-0.49
-1.07

CJ
50.0
44.0
47.0
3.00
0.253
47.00
-0.66
-1.24

CK
58.0
60.0
61.0
1.53
0.127
59.67
0.91
0.33

CO
56.0
38.0
42.0
9.45
0.759
45.33
-0.86
-1.44

CP
29.0
26.0
33.0
3.51
0.295
29.33
-2.84
-3.42

CQ
54.0
54.0
53.0
0.58
0.042
53.67
0.17
-0.41

CS
51.0
56.0
53.0
2.52
0.211
53.33
0.13
-0.45

CX
41.0
41.0
46.0
2.89
0.211
42.67
-1.19
-1.77

D
47.0
55.0
64.0
8.50
0.717
55.33
0.38
-0.21

DB
64.0
72.0
71.0
4.36
0.338
69.00
2.07
1.48

DD
58.0
57.0
59.0
1.00
0.084
58.00
0.71
0.12

DE
60.0
60.0
60.0
0.00
0.000
60.00
0.95
0.37

DG








•
DH
47.0
45.0
47.0
1.15
0.084
46.33
-0.74
-1.32,

DJ








«
DM








«
• =
No data submitted

TAG SYMBOLS

fT = Above control limit
$
hi
Insufficient data
x =
Determined to be an outlier
li s Below control limit
	—	 'J
-------
(r	








	*v

EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 28-Oct-1994 5/18
Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
63.0
55.0
52.0
5.69
0.464
56.67
0.54
-0.04

DP









DS
54.0
67.0
65.0
7.00
0.548
62.00
1.20
0.62

DT
58.0
53.0
54.0
2.65
0.211
55.00
0.33
-0.25

DX









DZ
34.0
36.0
37.0
1.53
0.127
35.67
-2.06
-2.64

E
61.0
60.0
61.0
0.58
0.042
60.67
1.04
0.45

EA








•
EB
53.0
54.0
58.0
2.65
0.211
55.00
U.33
-U.Z&

EL
45.0
52.0
46.0
3.79
0.295
47.67
-0.57
-1.15

EN
43.0
66.0
59.0
11.79
0.970
56.00
0.46
-0.12

EO
50.0
47.0
45.0
2.52
0.211
47.33
-0.61
-1.20

ER









EV
36.0
37.0
41.0
2.65
0.211
38.00
-1.77
-2.35

'inr








•
FF








•
FJ
47.0
34.0
37.0
6.81
0.548
39.33
-1.60
-2.19

FL
50.0
47.0
54.0
3.51
0.295
50.33
-0.24
-0.82

FN
35.0
38.0
40.0
2.52
0.211
37.67
-1.81
-2.39

FP








•
FZ
38.0
40.0
38.0
1.15
0.084
38.67
-1.69
-2.27

GE








•
GJ








•
GQ
43.0
44.0
45.0
1.00
0.084
44.00
-1.03
-1.61

GT
49;0
45i0






0
GZ
51.0
44.0
47.0
3.51
0.295
47.33
-0.61
-1.20

HI








•
HK
99.0
102.0
103.0
2.08
0.169
101:33
6i07
5.48
*
HL
64.0
50.0
49.0
8.39
0.633
54.33
0.25
-0.33

HP
55.0
53.0
52.0
1.53
0.127
53.33
0.13
-0.45

HX








«
HY









I
74.0
72.0
64.0
5.29
0.422
70.00
2.19
1.61

IC
55.0
59.0
62.0
3.51
0.295
58.67
0.79
0.21

m
64.0
65.0
60.0
2.65
0.211
63.00
1.32
0.74

IE








•
n








*'
J
53.0
56.0
59.0
3.00
0.253
56.00
0.46
-0.12

JE
36.0
29.0
34.0
3.61
0.295
33.00
-2.39
-2.97

JG








•
JM
38.0
39.0
43.0
2.65
0.211
40.00
-1.52
-2.10

JN
26.0
36.0
46.0
10.00
0.844
36.00
-2.02
-2.60

JP
59.0
54.0
54.0
2.89
0.211
55.67
0.42
-0.16

JQ
65.0
58.0
58.0
4.04
0.295
60.33
0.99
0.41

JS
36.0
23.0
32.0
6.66
0.548
30.33
-2.72
-3.30

• 3
No data submitted

TAG SYMBOLS

It s Above control limit
0 3
V	
Insufficient data
X 3
Determined to be an outlier
3 Below control limit
	4/
-------

6/18 EMSL-LV Performance Evalviation: Gross Alpha-Beta in Water, 28-Oct-1994
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
JY
49.0
48.0
50.0
1.00
0.084
49.00
-0.41
-0.99

K
45.0
45.0
46.0
0.58
0.042
45.33
-0.86
-1.44

KC








•
KE
31.0
32.0
36.0
2.65
0.211
33.00
-2.39
-2.97

KH
37.0
41.0
36.0
2.65
0.211
38.00
-1.77
-2.35

KT
54.0
55.0
59.0
2.65
0.211
56.00
0.46
-0.12

KX
62.0
62.0
67.0
2.89
0.211
63.67
1.41
0.82

L
64.0
63.0
62.0
1.00
0.084
63.00
1.32
0.74

LE








•
LF
45.0
49.0
51.0
3.06
0.253
48.33
-0.49
-1.07

LG








•
LL
72.0
81.0
75.0
4.58
0.380
76.00
2.93
2.35

LR
51.0
48.0
51.0
1.73
0.127
50.00
-0.28
-0.87

LT
32.0
29.0
31.0
1.53
0.127
30.67
-2.68
-3.26

M
68.0
69.0
68.0
0.58
0.042
68.33
1.98
1.40

MA








•
MF
39.0
41.0
40.0
1.00
0.084
40.00
-1.52
-2.10

MQ
62.0
63.0
67.0
2.65
0.211
64.00
1.45
0.87

MV
39.0
41.0
45.0
3.06
0.253
41.67
-1.32
-1.90

MY








•
N








' 9
NA
124.0
125.0
122:0
1.53
0.127
123.67
8.83^
8.26
X
NB
29.0
28.0
25.0
2.08
0.169
27.33
-3.09
-3.67
i
NE
78.0
85.0
91.0
6.51
0.548
84.67
4.00
3.42
IT
NH








1
NJ
55.0
50.0
52.0
2.52
0.211
52.33
0.00
-0.58

NK








9\
NO
49.0
51.0
54.0
2.52
0.211
51.33
-0.12
-0.70

NT
73.0
72.0
73.0
0.58
0.042
72.67
2.52
1.94

O
69.0
70.0
66.0
2.08
0.169
68.33
1.98
1.40

OA
50.0
60.0
37.0
11.53
0.970
49.00
-0.41
-0.99

OB
7.0
6.0
7.0
0.58
0.042
6.67
-5.65
-6.23
U
OF
64.0
63.0
56.0
4.36
0.338
61.00
1.08
0.49

OS
41.0
41.0
42.0
0.58
0.042
41.33
-1.36
-1.94

OX








•
OY
97.0
91.0
95.0
3.06
0.253
94.33
5.20
4.62
ft
P
60.0
81.0
49.0
16.26
1.667
63.33
1.36
0.78

PB
53.0
55.0
54.0
1.00
0.084
54.00
0.21
-0.37

PE








•
PG
65.0
65.0
67.0
1.15
0.084
65.67
1.65
1.07

PM
50.0
45.0
45.0
2.89
0.211
46.67
-0.70
-1.28

PQ








•
PR
90.0
87.0
86.0
2.08
0.169
87.67
4.38
3.79
ft
PV
51.0
57.0
60.0
4.58
0.380
56.00
0.46
-0.12

Q
54.0
59.0
56.0
2.52
0.211
56.33
0.50
-0.08

• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	U = Below control limit
^	'J
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994 7
/18
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
QA








• ¦
QC
48.0
49.0
41.0
4.36
0.338
46.00
-0.78
-1.36

QI









QJ








«.
QP
31.0
45.0
55.0
12.06
1.024
43.67
-1.07
-1.65

QQ
64.0
59.0
61.0
2.52
0.211
61.33
1.12
0.54

QT
42.0
73.0
54.0
15.63
1.586
56.33
0.50
-0.08

QU








' •
QW
87.0
85.0
89.0
2.00
0.169
87.00
4.29
3.71
11
QX
48.0
46.0
45.0
1.53
0.127
46.33
-0.74
-1.32

QZ
47.0
39.0
43.0
4.00
0.338
43.00
-1.15
-1.73

R
58.0
63.0
64.0
3.21
0.253
61.67
1.16
0.58

RB
41.0
45.0
47.0
3.06
0.253
44.33
-0.99
-1.57

RC








•
RD
48.0
50.0
52.0
2.00
0.169
50.00
-0.28
-0.87

RE
42.0
54.0
32.0
11.02
0.928
42.67
-1.19
-1.77

RF








B
RG
48.0
41.0
46.0
3.61
0.295
45.00
-0.90
-1.48

RH








•
RI
56.0
55.0
57.0
1.00
0.084
56.00
0.46
-0.12

RJ
55.0
54.0
48.0
3.79
0.295
52.33
0.00
-0.58

RM
47.0
35.0
37.0
6.43
0.506
39.67
-1.56
-2.14

RR








•
RV
55.0
47.0
51.0
4.00
0.338
51.00
-0.16
-0.74

RW
51.0
51.0
57.0
3.46
0.253
53.00
0.09
-0.49

RZ
32.0
33.0
37.0
2.65
0.211
34.00
-2.26
-2.85

S
60.0
56.0
57.0
2.08
0.169
57.67
0.66
0.08

sc
53.0
52.0
54.0
1.00
0.084
53.00
0.09
-0.49

SD
56.0
58.0
59.0
1.53
0.127
57.67
0.66
0.08

SF
81.0
70.0
67.0
7.37
0.591
72.67
2.52
1.94

SI
62.0
62.0
60.0
1.15
0.084
61.33
1.12
0.54

SL
73.0
67.0
73.0
3.46
0.253
71.00
2.31
1.73

SM
67.0
59.0
57.0
5.29
0.422
61.00
1.08
0.49

SN








' •
SO
56.0
58.0
55.0
1.53
0.127
56.33
0.50
-0.08

SR
75.0
79.0
70.0
4.51
0.380
74.67
2.77
2.19

ss
55.0
52.0
48.0
3.51
0.295
51.67
-0.08
-0.66

ST








•
su
48.0
48.0
42.0
3.46
0.253
46.00
-0.78
-1.36

sw








•
sx
51.0
51.0
49.0
1.15
0.084
50.33
-0.24
-0.82

sz
42.0
43.0
43.0
0.58
0.042
42.67
-1.19
-1.77

T
93.0
93.0
94.0
0.58
0.042
93.33
5.08
4.50
It
TC
39.0
40.0
32.0
4.36
0.338
37.00
-1.89
-2.47

TD
59.0
83.0
58.0
14.15
1.104
66.67
1.78
1.20

• 3
0 3
No data submitted
Insufficient data
X 3
TAG SYMBOLS
Determined to be an outlier
It a Above control limit
s Below control limit
-------
8/18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TE
61.0
50.0
54.0
5.57
0.464
55.00
0.33
-0.25

TH
54.0
58.0
60.0
3.06
0.253
57.33
0.62
0.04

TI
48.0
54.0
56.0
4.16
0.338
52.67
0.05
-0.54

TL
55.0
53.0
48.0
3.61
0.295
52.00
-0.04
-0.62

TN
48.0
36.0
32.0
8.33
0.675
38.67
-1.69
-2.27

TO








ft
TQ
63.0
64.0
64.0
0.58
0.042
63.67
1.41
0.82

TW
85.0
89.0
89.0
2.31
0.169
87.67
4.38
3.79
ft
TY
39.0
38.0
36.0
1.53
0.127
37.67
-1.81
-2.39

U
69.0
66.0
67.0
1.53
0.127
67.33
1.86
1.28

UA








•
UE
45.0
51.0
50.0
3.21
0.253
48.67
-0.45
-1.03

UG








•
UN
35.0
31.0
36.0
2.65
0.211
34.00
-2.26
-2.85

UP
57.0
51.0
55.0
3.06
0.253
54.33
0.25
-0.33

UQ
59.0
56.0
56.0
1.73
0.127
57.00
0.58
0.00

UY









UZ








• -
VG
46.0
31.0
52.0
10.82
0.886
43.00
-1.15
-1.73

VH
22.0
19.0
21.0
1.53
0.127
20.67
-3.91
-4.50

VI








•
VJ
37.0
41.0
39.0
2.00
0.169
39.00
-1.65
-2.23

VM








•
VN








•
vo








•
VQ








•
VT
51.0
56.0
60.0
4.51
0.380
55.67
0.42
-0.16

VX








•
W








•
X
40.0
39.0
37.0
1.53
0.127
38.67
-1.69
-2.27

z
55.0
58.0-
54.0
2.08
0.169
55.67
0.42
-0.16

Data sorted by laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average Tag
Lab
6.67
4
OB
34.00
UN
38.67
X
11.33
u
A
34.00
RZ
38.67
TN
20.67
u
VH
35.67
DZ
38.67
FZ
27.33
u
NB
36.00
JN
39.00
VJ
28.00
Ji
AR
37.00
TC
39.33
FJ
29.33
u
CP
37.00
BH
39.67
RM
30.33
u
JS
37.67
TY
40.00
MF
30.67
u
LT
37.67
FN
40.00
JM
31.00
u
AH
37.67
AN
41.33
OS
33.00

KE
38.00
KH
41.67
MV
33.00

jE
38.00
EV
42.67
SZ
• ~ No data submitted
0 s Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
a Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994
	^
9/18
Gross Alpha





\

Data sorted by Laboratory Averag
re


Average Tag
Lab
Average Tag
Lab
Average
Tag
Lab
42.67
RE
52.67
C
59.67

CK
42.67
CX
52.67
BA
60.00

DE
42.67
BK
53.00
SC
60.33

JQ
43.00
VG
53.00
RW
60.67

E
43.00
QZ
53.00
AP
61.00

SM
43.67
QP
53.33
HP
61.00

OF
44.00
GQ
" 53.33
cs
61.33

SI
44.33
RB
53.67
CQ
61.33

QQ
45.00
RG
54.00
PB
61.67

R
45.33
K
54.00
BO
62.00

DS
45.33
CO
54.33
UP
62.67

AW
46.00
su
54.33
HL
63.00

L
46.00
QC
54.67
CE
63.00

ID
46.33
QX
54.67
BC
63.33

P
46.33
DH
55.00
TE
63.67

TQ
46.67
PM
55.00
EB
63.67

KX
47.00
CJ
55.00
DT
64.00

MQ
47.00
CA
55.33
D
65.67

PG
47.00
BM
55.67
Z
66.67

TD
47.33
GZ
55.67
VT
67.00

AE
47.33
EO
55.67
JP
67.33

U
47.67
EL
55.67
AJ
67.67

BL
48.33
LF
56.00
RI
68.00

AL
48.33
CG
56.00
PV
68.33

O
48.67
UE
56.00
KT
68.33

M
49.00
OA
56.00
J
69.00

DB
49.00
JY
56.00
EN
69.33

BI
50.00
RD
56.33
SO
70.00

I
50.00
LR
56.33
QT
71.00

SL
50.33
SX
56.33
Q
72.67

SF
50.33
FL
56.33
BN
72.67

NT
50.33
AK
56.67
DO
74.67

SR
51.00
RV
57.00
UQ
76.00

LL
51.33
NO
57.33
TH
84.67
ir
NE
51.67
ss
57.67
SD
87.00
ft
QW
52.00
TL
57.67
S
87.67
it
TW
52.33
RJ
57.67
AF
87.67
ft
PE
52.33
NJ
58.00
DD
93.33
it
T
52.33
AZ
58.67
IC
94.33
it
OY
52.67
TI
58.67
AU
101.33
X
HK




123.67
X
NA
• a No data submitted

TAG SYMBOLS

ft
3 Above control limit
0 s Insufficient data

x = Determined to be an outlier

s Below control limit
-------
(t	-
10 /18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994
Gross Alpha
% responding labs		Frequency distribution
10-
ilrl"llflllT|«B«lT"B«-T
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
responding labs	Frequency distribution
10-
iTililfll
j-»—jll-lylfliHlll"	r T-»
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994 11 /18
Gross Beta	Statistical Summary	211 Participants
The known value of this nuclide is 23.0 pCiA with an expected precision of 5.0; the control limits
are 14.3 to 31.7; the warning regions are 14.3 to 17.2 and 28.8 to 31.7
53(25.1 %) Failed to respond
6(2.8 %) Outliers •'
24( 11.4. %) Out of control *'
but not an outlier
Statistic
; 88(41.7 %) Within all limits
Respondents
40(19.0 %) 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
28.41
12.10
146.45
42.60
23.51
0.45
27.00
17.39
0.33
Grand Avg 27.18
5.23
27.40
19.28
18.07
0.79
27.00
17.39
0.76
34(21.5 %) More than 3 norm. S.D.,
36(22.8 %) Between 2 and 3 norm. S.D.
. 53(33.5 %) Within 1 norm. S.D.
of known value
35(22.2 %) Between 1 and 2 norm. S.D.
-------
12 / 18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct>1994
f	
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
20.0
24.0
22.0
2.00
0.473
22.00
-1.79
-0.35
AE
23.0
23.0
23.0
0.00
0.000
23.00
-1.44
0.00
AF
34.0
35.0
32.0
1.53
0.354
33.67
2.26
3.70 It
AH
23.0
24.0
28.0
2.65
0.591
25.00
-0.75
0.69
AJ
29.0
30.0
31.0
1.00
0.236
30.00
0.99
2.42
AK
29.0
27.0
29.0
1.15
0.236
28.33
0.41
1.85
AL
26.0
28.0
27.0
1.00
0.236
27.00
-0.05
1.39
AN
31.0
32.0
31.0
0.58
0.118
31.33
1.45
2.89
AO







e
AP
31.0
32.0
33.0
1.00
0.236
32.00
1.68
3.12 It
AR
22.0
19.0
22.0
1.73
0.354
21.00
-2.13
-0.69
AU
26.0
24.0
25.0
1.00
0.236
25.00
-0.75
0.69
AW
30.0
31.0
33.0
1.53
0.354
31.33
1.45
2.89
AZ
20.0
20.0
19.0
0.58
0.118
19.67
-2.59
-1.15
BA
23.0
25.0
24.0
1.00
0.236
24.00
-1.09
0.35
BB







•
BC
27.0
28.0
29.0
1.00
0.236
28.00
0.29
1.73
BG







•
BH
28.0
27.0
26.0
1.00
0.236
27.00
-0.05
1.39
BI
41.0
39.0
39.0
1.15
0.236
39.67
4.33
5.77 It
BK
21.0
24.0
31.0
5.13
1.345
25.33
-0.63
0.81
BL
19.0
19.0
21.0
1.15
0.236
19.67
-2.59
-1.15
BM
23.0
25.0
24.0
1.00
0.236
24.00
-1.09
0.35
BN
21.0
23.0
26.0
2.52
0.591
23.33
-1.32
0.12
BO
21.0
21.0
20.0
0.58
0.118
20.67
-2.25
-0.81
BW







9 ¦
C
25.0
26.0
26.0
0.58
0.118
25.67
-0.52
0.92
CA
26.0
23.0
27.0
2.08
0.473
25.33
-0.63
0.81
CE
15.0
16.0
17.0
1.00
0.236
16.00
-3.86
-2.42
CG
25.0
25.0
19.0
3.46
0.709
23.00
-1.44
0.00
CJ
27.0
24.0
25.0
1.53
0.354
25.33
-0.63
0.81
CK
36.0
41.0
29.0
6.03
1.795
35.33
2.83
4.27 ft
CO
24.0
46.0
31.0
11.24
4.046
33.67
2.26
3.70 It
CP
34.0
25.0
28.0
4.58
1.120
29.00
0.64
2.08
CQ
34.0
27.0
30.0
3.51
0.827
30.33
1.10
2.54
CS
21.0
22.0
21.0
0.58
0.118
21.33
-2.02
-0.58
CX
29.0
31.0
28.0
1.53
0.354
29.33
0.75
2.19
D
29.0
32.0
32.0
1.73
0.354
31.00
1.33
2.77
DB
31.0
30.0
31.0
0.58
0.118
30.67
1.22
2.66
DD
22.0
25.0
26.0
2.08
0.473
24.33
-0.98
0.46
DE
30.0
30.0
31.0
0.58
0.118
30.33
1.10
2.54
DG








DH
29.0
29.0
28.0
0.58
0.118
28.67
0.52
1.96
DJ







•
DM
18.0
17.0
22.0
2.65
0.591
19.00
-2.83
-1.39
• = No data submitted TAG SYMBOLS It a Above control limit
0 g Insufficient data	x a Determined to be an outlier	. U ~ Below control limit
-------
f?	








	^

EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 28-Oct-1994 13/18
Gross Beta








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
27.0
26.0
20.0
3.79
0.827
24.33
-0.98
0.46

DP








>
DS
33.0
37.0
32.0
2.65
0.591
34.00
2.37
3.81
ir
DT
26.0
27.0
27.0
0.58
0.118
26.67
-0.17
1.27

DX








•
DZ
24.0
25.0
26.0
1.00
0.236
25.00
-0.75
0.69

E
31.0
30.0
31.0
0.58
0.118
30.67
1.22
2.66

EA








*
EB
28.0
29.0
29.0
0.58
0.118
28.67
0.52
1.96

EL
19.0
20.0
22.0
1.53
0.354
20.33
-2.36
-0.92

EN
36.0
44.0
32.0
6.11
1.795
37.33
3.53
4.97
IT
EO
30.0
25.0
29.0
2.65
0.591
28.00
0.29
1.73

ER








-*
EV
25.0
25.0
26.0
0.58
0.118
25.33
-0.63
0.81

EW
31.0
28.0
35.0
3.51
0.827
31.33
1.45
2.89

' FF*









FJ
27.0
25.0
26.0
1.00
0.236
26.00
-0.40
1.04

FL
4810
49.0
61.0
1.53
0;354
49.33
7;68
9,12
Jf
FN
25.0
27.0
30.0
2.52
0.591
27.33
0.06
1.50

FP








»
FZ
37.0
42.0
32.0
5.00
1.345
37.00
3.41
4.85
1t
GE








•-
GJ








•
GQ
19.0
21.0
220
1.53
0.354
20.67
-2.25
-0.81

GT
310
30i0






0
GZ
12.0
15.0
12.0
1.73
0.354
13.00
-4.90
-3.46

HI








•
HK
32.0
31.0
32.0
0.58
0.118
31.67
1.56
3.00

HL
32.0
30.0
30.0
1.15
0.236
30.67
1.22
2.66

HP
30.0
27.0
19.0
5.69
1.570
25.33
-0.63
0.81

HX








•
HY









I
24.0
21.0
23.0
1.53
0.354
22.67
•1.56
-0.12

IC
32.0
33.0
28.0
2.65
0.591
31.00
1.33
2.77

ID
33.0
31.0
31.0
1.15
0.236
31.67
1.56
3.00

IE








• "
n









J
23.0
22.0
23.0
0.58
0.118
22.67
-1.56
-0.12

JE
30.0
28.0
30.0
1.15
0.236
29.33
0.75
2.19

JG








•
JM
29.0
31.0
32.0
1.53
0.354
30.67
1.22
2.66

JN
18.0
25.0
26.0
4.36
0.945
23.00
-1.44
0.00

JP
22.0
20.0
22.0
1.15
0.236
21.33
-2.02
-0.58

JQ
23.0
29.0
31.0
4.16
0.945
27.67
0.18
1.62

J8
63,0
50.0
44.0
9.71
3.371
52.33
8il2
10.16
X
• =
No data submitted

TAG SYMBOLS

IT s Above control limit
0 3
v:	
Insufficient data
X s
Determined to be an outlier
U s Below control limit
-------
(,	








	^
14 /18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994

Gross Beta








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JY
26.0
26.0
27.0
0.58
0.118
26.33
-0.28
1.15

K
27.0
29.0
28.0
1.00
0.236
28.00
0.29
1.73

KC








•
KE
29.0
30.0
32.0
1.53
0.354
30.33
1.10
2.54

KH
22.0
22.0
22.0
0.00
0.000
22.00
-1.79
-0.35

KT
26.0
29.0
30.0
2.08
0.473
28.33
0.41
1.85

KX
25.0
26.0
28.0
1.53
0.354
26.33
-0.28
1.15

L
26.0
24.0
27.0
1.53
0.354
25.67
-0.52
0.92

LE








•
LF
27.0
26.0
27.0
0.58
0.118
26.67
-0.17
1.27

LG









LL
27.0
23.0
22.0
2.65
0.591
24.00
-1.09
0.35

LR
61.0
50.0
44.0
3.79
0.827
48;33
1.34
8;78
X
LT
32.0
28.0
26.0
3.06
0.709
28.67
0.52
1.96

M
36.0
35.0
34.0
1.00
0.236
35.00
2.72
4.16
ft
MA
24.0
27.0
22.0
2.52
0.591
24.33
-0.98
0.46

MF
38.0
36.0
44.0
4.16
0.945
39.33
4.22
5.66
ft
MQ
28.0
24.0
29.0
2.65
0.591
27.00
-0.05
1.39

MV
27.0
31.0
31.0
2.31
0.473
29.67
0.87
2.31

MY








•
N








•
NA
23.0
24.0
24.0
0.58
0.118
23.67
-1.21
0.23

NB
18.0
59.0
22.0
22.61
8.321
33.00
2.02
3.46
ft
NE
26.0
27.0
27.0
0.58
0.118
26.67
-0.17
1.27

NH









NJ
35.0
36.0
35.0
0.58
0.118
35.33
2.83
4.27
ft
NK








*•'
NO
30.0
32.0
34.0
2.00
0.473
32.00
1.68
3.12
ft
NT
31.0
31.0
32.0
0.58
0.118
31.33
1.45
2.89

O
24.0
25.0
24.0
0.58
0.118
24.33
-0.98
0.46

OA
24.0
29.0
23.0
3.21
0.709
25.33
-0.63
0.81

OB
5.0
5.0
5.0
0.00
0.000
5.00
-7.87
-0.24
X
OF
23.0
24.0
21.0
1.53
0.354
22.67
-1.56
-0.12

OS
28.0
26.0
27.0
1.00
0.236
27.00
-0.05
1.39

OX








•
OY
13.0
14.0
18.0
2.65
0.591
15.00
-4.21
-2.77

P
31.0
39.0
27.0
6.11
1.795
32.33
1.79
3.23
ft
PB
32.0
31.0
30.0
1.00
0.236
31.00
1.33
2.77

PE








•
PG
34.0
34.0
31.0
1.73
0.354
33.00
2.02
3.46
ft
PM
31.0
31.0
23.0
4.62
0.945
28.33
0.41
1.85

PQ









PR
27.0
27.0
25.0
1.15
0.236
26.33
-0.28
1.15

FV
22.0
28.0
29.0
3.79
0.827
26.33
-0.28
1.15

Q
26.0
33.0
29.0
3.51
0.827
29.33
0.75
2.19

• 3
No data submitted

TAG SYMBOLS

ft m Above control limit
l0-
Insufficient data
x =
Determined to be an outlier
J1 = Below control limit
	41
-------
(
EMSL-LV Performance Evaluation:
			N
Gross Alpha-Beta in Water, 28-Oct-1994 13/18
Gross Beta







•<
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
QA








•
QC
29.0
27.0
30.0
1.53
0.354
28.67
0.52
1.96

QI








•'
QJ









QP
15.0
24.0
27.0
6.24
1.795
22.00
-1.79
-0.35

QQ
34.0
39.0
34.0
2.89
0.591
35.67
2.95
4.39
ft
QT
58.0
33.0
17.0
20.66
8.321
36.00
3.06
4.50
it
QU








•
QW
36.0
37.0
33.0
2.08
0.473
35.33
2.83
4.27
tr
QX
31.0
29.0
29.0
1.15
0.236
29.67
0.87
2.31

QZ
22.0
20.0
21.0
1.00
0.236
21.00
-2.13
-0.69

R
30.0
30.0
30.0
0.00
0.000
30.00
0.99
2.42

RB
23.0
21.0
22.0
1.00
0.236
22.00
-1.79
-0.35

RC








•
RD
38.0
38.0
32.0
3.46
0.709
36.00
3.06
4.50
it
RE
26.0
27.0
23.0
2.08
0.473
25.33
-0.63
0.81

RF









RG
35.0
30.0
31.0
2.65
0.591
32.00
1.68
3.12
it
RH








m
R1
19.0
19.0
20.0
0.58
0.118
19.33
-2.71
-1.27

RJ
30.0
29.0
29.0
0.58
0.118
29.33
0.75
2.19

RM
15.0
19.0
17.0
2.00
0.473
17.00
-3.52
-2.08

RR








m
RV
21.0
24.0
23.0
1.53
0.354
22.67
-1.56
-0.12

RW
25.0
23.0
27.0
2.00
0.473
25.00
-0.75
0.69

RZ
18.0
20.0
20.0
1.15
0.236
19.33
-2.71
-1.27

S
26.0
28.0
26.0
1.15
0.236
26.67
-0.17
1.27

sc
26.0
21.0
22.0
2.65
0.591
23.00
-1.44
0.00

SD
31.0
32.0
26.0
3.21
0.709
29.67
0.87
2.31

SF
28.0
27.0
24.0
2.08
0.473
26.33
-0.28
1.15

SI
20.0
21.0
20.0
0.58
0.118
20.33
-2.36
-0.92

SL
48.0
30.0
45.0
9.64
3.146
41.00
4.80.
6.24
it
SM
24.0
23.0
25.0
1.00
0.236
24.00
-1.09
0.35

SN








•:
SO
24.0
25.0
24.0
0.58
0.118
24.33
-0.98
0.46

SR
29.0
30.0
33.0
2.08
0.473
30.67
1.22
2.66

SS
30.0
31.0
27.0
2.08
0.473
29.33
0.75
2.19

ST








«
SU
24.0
28.0
25.0
2.08
0.473
25.67
-0.52
0.92

sw








•
SX
37.0
35.0
34.0
1.53
0.354
35.33
2.83
4.27
IT
SZ
25.0
24.0
25.0
0.58
0.118
24.67
-0.86
0.58

T
20.0
17.0
20.0
1.73
0.354
19.00
-2.83
-1.39

TG
142;0
160.0
165.0
12:10
4 271
met
44152
45:96;
Xr
TD
26.0
25.0
26.0
0.58
0.118
25.67
-0.52
0.92

• =
No data submitted

TAG SYMBOLS

It 3 Above control limit
0 3
V	
Insufficient data
X 3
Determined to be an outlier
s Below control limit
¦y
-------
16 / 18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994

Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
it:
30.0
29.0
32.0
1.53
0.354
30.33
1.10
2.54

TH
28.0
34.0
33.0
3.21
0.709
31.67
1.56
3.00

TT
36.0
44.0
36.0
4.62
0.945
38.67
3.99
5.43
ir
TL
21.0
20.0
20.0
0.58
0.118
20.33
-2.36
-0.92

TN
32.0
29.0
28.0
2.08
0.473
29.67
0.87
2.31

TO








*
TQ
32.0
28.0
29.0
2.08
0.473
29.67
0.87
2.31

TW
14.0
18.0
16.0
2.00
0.473
16.00
-3.86
-2.42

TY
29.0
28.0
28.0
0.58
0.118
28.33
0.41
1.85

U
32.0
31.0
29.0
1.53
0.354
30.67
1.22
2.66

UA








' • -
UE
31.0
31.0
32.0
0.58
0.118
31.33
1.45
2.89

UG








•
UN
31.0
26.0
26.0
2.89
0.591
27.67
0.18
1.62

UP
31.0
29.0
27.0
2.00
0.473
29.00
0.64
2.08

UQ
24.0
25.0
23.0
1.00
0.236
24.00
-1.09
0.35

UY
24.0
19.0
18.0
3.21
0.709
20.33
-2.36
-0.92

uz








• -
VG
20.0
17.0
22.0
2.52
0.591
19.67
-2.59
-1.15

VH
26.0
20.0
24.0
3.06
0.709
23.33
-1.32
0.12

VI








•
VJ
21.0
21.0
21.0
0.00
0.000
21.00
-2.13
-0.69

VM









VN








• ;
vo








• _
VQ








•'
VT
44.0
50.0
56.0
6.00
1.795
50.00
7.91
9.35
X
VX








•- >
W









X
29.0
32.0
34.0
2.52
0.591
31.67
1.56
3.00

z
25.0
25.0
25.0
0.00
0.000
25.00
-0.75
0.69

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average Tag
Lab
5.00
X
OB
19.67
BL
21.33
JP
13.00

GZ
19.67
AZ
21.33
CS
15.00

OY
20.33
UY
22.00
RB
16.00

TW
20.33
TL
22.00
QP
16.00

CE
20.33
SI
22.00
KH
17.00

RM
20.33
EL
22.00
A
19.00

T
20.67
GQ
22.67
RV
19.00

DM
20.67
BO
22.67
OF
19.33

RZ
21.00
VJ
22.67
J
19.33

HI
21.00
QZ
22.67
I
19.67

VG
21.00
AR
23.00
SC
• s No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
1T = Above control limit
It 2 Below control limit

-------
EMSLrLV Performance Evaluation: Gross Alpha-Beta in Water, 28-Oct-1994 17/18
-
Gross Beta






	—

Data sorted by Laboratory Averaf
fe


Average Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
23.00
JN
26.67

LF
30.67

E
23.00
CG
26.67

DT
30.67

DB
23.00
AE
27.00

OS
31.00

PB
23.33
VH
27.00

MQ
31.00

IC
23.33
BN
27.00

BH
31.00

D
23.67
NA
27.00

AL
31.33

UE
24.00
UQ
27.33

FN
31.33

NT
24.00
SM
27.67

UN
31.33

EW
24.00
LL
27.67

JQ
31.33

AW
24.00
BM
28.00

K
31.33

AN
24.00
BA
28.00

EO
31.67

X
24.33
SO
28.00

BC
31.67

TH
24.33
O
28.33

TY
31.67

W
24.33
MA
28.33

PM
31.67

HK
24.33
DO
28.33

KT
32.00
ft
RG
24.33
DD
28.33

AK
32.00
ft
NO
24.67
SZ
28.67

QC
32.00
ft
AP
25.00
Z
28.67

LT
32.33
ft
P
25.00
RW
28.67

EB
33.00
ft
PG
25.00
DZ
28.67

DH
33.00
ft
NB
25.00
AU
29.00

UP
33.67
ft
CO
25.00
AH
29.00

CP
33.67
ft
AF
25.33
RE
29.33

SS
34.00
ft
DS
25.33
OA
29.33

RJ
35.00
ft
M
25.33
HP
29.33

Q
35.33
ft
SX
25.33
EV
29.33

JE
35.33
ft
QW
25.33
CJ
29.33

CX
35.33
ft
NJ
25.33
CA
29.67

TQ
35.33
ft
CK
25.33
BK
29.67

TN
35.67
ft
QQ
25.67
TD
29.67

SD
36.00
ft
RD
25.67
SU
29.67

qx
36.00
ft
QT
25.67
L
29.67

MY
37.00
ft
FZ
25.67
C
30.00

R
37.33
ft
EN
26.00
FJ
30.00

AJ
38.67
ft
TI
26.33
SF
30.33

TE
39.33
ft
MF
26.33
PV
30.33

KE
39.67
ft
BI
26.33
PR
30.33

DE
41.00
ft
SL
26.33
KX
30.33

CQ
48.33
X
LR
26.33
JY
30.67

U
49.33
X
FL
26.67
S
30.67

SR
50.00
X
VT
26.67
NE
30.67

JM
52.33
X
JS


30.67

HL
155.67
X
TC
• a No data submitted

TAG SYMBOLS

ft
a Above control limit
0 = Insufficient data

x a Determined to be an outlier

3 Below control limit
	f
-------
18 /18 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 28-0cM994
Gross Beta
% responding labs	Frequency distribution
oL,	,	,		 t- ¦ T		¦	T	,»
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution

* I	T	" I	I	I	I	I	I	I ~T ™ T"~ - |	l 1
-6	*4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
United States	Office of Research and	iu
Environmental Protection	Development	January 1995
Agency	Washington, DC 20460
&EPA Gamma in Water
Performance
Evaluation Study
A Statistical Evaluation of
the November 4, 1994 Data
-------
Gamma in Water
Performance Evaluation Study
November 4, 1994
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 Gamma in Water; November 4, 1994.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-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
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: Gamma in Water, 4-Nov-1994	1/42
^	¦	i .	)
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 limit*
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 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.
-------
2/42	EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
The Range AnaIysis(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.
\v
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
3/42
Cobalt-60	Statistical Summary	198 Participants
The known value of this nuclide is 59.0 pCi/1 with an expected precision of 5.0; the control limits
are 50.3 to 67.7; the warning regions are 50.3 to 53.2 and 64.8 to 67.7
32(16.2 %) Failed to respond
7(3.5 %) Outliers'
13(6.6 %) Out of control
but not an outlier
Statistic
. 136(68.7 %) Within all limits
Respondents
* 10(5.1 %) 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
65.91
55.31
3059.40
83.92
11.71
0.12
58.67
-0.56
-0.01
Grand Avg 58.87
4.59
21.08
7.80
-0.23
-0.03
58.67
-0.56
-0.07
21 (12.7 %) More than 3 norm. S.D
9(5.4 %) Between 2 and 3 norm. S.D.'
• 88(53.0 %) Within 1 norm. S.D.
of Known value
' 7', • > ' '«//,<<
¦ ' '< '' % / ,y,'
	'
¦ - ;
48(28.9 %) Between 1 and 2 norm. S.D.
-------
ft
4/42 EMSL-LV Performance Evaluation: Gamma in Water,
4-Nov-1994

	^
Cobalt-60








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
54.0
53.0
56.0
1.53
0.354
54.33
-1.57
-1.62

AE
64.0
61.0
66.0
2.52
0.591
63.67
1.66
1.62

AF
59.0
64.0
60.0
2.65
0.591
61.00
0.74
0.69

AH
57.0
57.0
53.0
2.31
0.473
55.67
-1.11
-1.15

AI
60.0
55.0
57.0
2.52
0.591
57.33
-0.53
-0.58

AJ
64.0
64.0
64.0
0.00
0.000
64.00
1.78
1.73

AK
60.0
60.0
59.0
0.58
0.118
59.67
0.28
0.23

AL
67.0
69.0
65.0
2.00
0.473
67.00
2.82
2.77

AN
57.0
55.0
56.0
1.00
0.236
56.00
-0.99
-1.04

AP








«
AU
58.0
61.0
61.0
1.73
0.354
60.00
0.39
0.35

AW
46.0
45.0
50.0
2.65
0.591
47.00
-4.11
-4.16

AY
60.0
64.0
62.0
2.00
0.473
62.00
1.09
1.04

AZ
44,0
41.0
39.0
2.62
0.591
41.33
-6.0?
-612
X
BA
60.0
62.0
60.0
1.15
0.236
60.67
0.62
0.58

BB
62.0
61.0
62.0
0.58
0.118
61.67
0.97
0.92

BC
59.0
56.0
60.0
2.08
0.473
58.33
-0.18
-0.23

BG









BH
58.0
63.0
64.0
3.21
0.709
61.67
0.97
0.92

BI








•
BK
58.0
60.0
61.0
1.53
0.354
59.67
0.28
0.23

BL
57.0
62.0
56.0
3.21
0.709
58.33
-0.18
-0.23

BM
63.0
61.0
62.0
1.00
0.236
62.00
1.09
1.04

BN
58.0
58.0
57.0
0.58
0.118
57.67
-0.42
-0.46

BO
60.0
57.0
56.0
2.08
0.473
57.67
-0.42
-0.46

BW
54.0
51.0
60.0
4.58
1.120
55.00
-1.34
-1.39

C
63.0
62.0
60.0
1.53
0.354
61.67
0.97
0.92

CA
57.0
59.0
59.0
1.15
0.236
58.33
-0.18
-0.23

CC
33.0
50.0
53.0
10.79
3.596
45.33
-4.69
-4.73

CE
62.0
60.0
60.0
1.15
0.236
60.67
0.62
0.58

CG








•
CJ
52.0
52.0
52.0
0.00
0.000
52.00
-2.38
-2.42

CK
65.0
65.0
67.0
1.15
0.236
65.67
2.36
2.31

CM
32.0
330
34.0
1.00
0.236
33.00
*8.96
-9.01
X
CO
58.0
66.0
51.0
7.51
2.470
58.33
-0.18
-0.23

CP
61.0
61.0
60.0
0.58
0.118
60.67
0.62
0.58

CQ
61.0
62.0
62.0
0.58
0.118
61.67
0.97
0.92

CS
61.0
64.0
63.0
1.53
0.354
62.67
1.32
1.27

CX
58.0
65.0
68.0
5.13
1.345
63.67
1.66
1.62

D
61.0
61.0
62.0
0.58
0.118
61.33
0.85
0.81

DD
57.0
56.0
57.0
0.58
0.118
56.67
-0.76
-0.81

DE
56.0
56.0
57.0
0.58
0.118
56.33
¦0.88
-0.92

DG
63.0
63.0
63.0
0.00
0.000
63.00
1.43
1.39

DH
63.0
63.0
63.0
0.00
0.000
63.00
1.43
1.39

DJ









• =
No data submitted

TAG SYMBOLS

IT = Above control limit
IP-
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
	jj
-------
(f
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994	5/42
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
DL
57.0
54.0
56.0
1.53
0.354
55.67
-1.11
-1.15

DM
68.0
69.0
71.0
1.53
0.354
69.33
3.63
3.58
ft
DO
66.0
64.0
63.0
1.53
0.354
64.33
1.89
1.85

DT
54.0
54.0
56.0
1.15
0.236
54.67
-1.45
-1.50

DZ
52.0
55.0
56.0
2.08
0.473
54.33
-1.57
-1.62

E
58.0
58.0
58.0
0.00
0.000
58.00
-0.30
-0.35

EA








• '
EB
58.0
58.0
58.0
0.00
0.000
58.00
-0.30
-0.35

EL
55.0
56.0
60.0
2.65
0.591
57.00
-0.65
-0.69

EN
72.0
69.0
65.0
3.51
0.827
68.67
3.40
3.35
ft
EW
55.0
60.0
57.0
2.52
0.591
57.33
-0.53
-0.58

EX
58.0
58.0
59.0
0.58
0.118
58.33
-0.18
-0.23

EZ
646.0
62510
526.0
11.27
3.586
632.00
163.90
163.85
X
FJ
54.0
59.0
58.0
2.65
0.591
57.00
-0.65
-0.69

FK








,•
FL
470;0
483.0
490.0
13.00
4.946
483.00
146,92
146.88
X
FU
62.0
60.0
55.0
3.61
0.827
59.00
0.05
0.00

FZ
60.0
63.0
67.0
3.51
0.827
63.33
1.55
1.50

GE
56.0
54.0
57.0
1.53
0.354
55.67
-1.11
-1.15

GI
60.0
58.0
59.0
1.00
0.236
59.00
0.05
0.00

GL
55.0
54.0
52.0
1.53
0.354
53.67
-1.80
-1.85

GQ
60.0
61.0
61.0
0.58
0.118
60.67
0.62
0.58

HI








• '
HJ
59.0
60.0
63.0
2.08
0.473
60.67
0.62
0.58

HK
60.0
60.0
60.0
0.00
0.000
60.00
0.39
0.35

HL
57.0
57.0
57.0
0.00
0.000
57.00
-0.65
-0.69

HP
371:6
391.0
381.0
10.00
3.596
381.00
111.69
111.64
X
HX









I
60.0
59.0
58.0
1.00
0.236
59.00
0.05
0.00

IC
59.0
62.0
64.0
2.52
0.591
61.67
0.97
0.92

J
60.0
59.0
59.0
0.58
0.118
59.33
0.16
0.12

JE
60.0
64.0
62.0
2.00
0.473
62.00
1.09
1.04

JG
59.0
58.0
59.0
0.58
0.118
58.67
-0.07
-0.12

JI
55.0
54.0
58.0
2.08
0.473
55.67
-1.11
-1.15

JR








• "
JS
56.0
59.0
56.0
1.73
0.354
57.00
-0.65
-0.69

JY
67.0
78.0
54.0
12.01
4.496
66.33
2.59
2.54

K
52.0
50.0
48.0
2.00
0.473
50.00
-3.07
-3.12

KH
82.0
70.0
81.0
3.21
0.709
79i67
7.21
7;16

KL
57.0
58.0
58.0
0.58
0.118
57.67
-0.42
-0.46

KX
55.0
59.0
60.0
2.65
0.591
58.00
-0.30
-0.35

L
57.0
56.0
58.0
1.00
0.236
57.00
-0.65
-0.69

LE
66.0
63.0
64.0
1.53
0.354
64.33
1.89
1.85

LF
54.0
59.0
57.0
2.52
0.591
56.67
-0.76
-0.81

LR
62.0
66.0
62.0
2.31
0.473
63.33
1.55
1.50

• =
No data submitted

TAG SYMBOLS

ft a Above control limit
[0s Insufficient data	x s Determined to be an outlier	JJ = Below control limit
^	'J
-------
(f	n\
6/42	EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LT
59.0
59.0
62.0
1.73
0.354
60.00
0.39
0.35

M
55.0
56.0
57.0
1.00
0.236
56.00
-0.99
-1.04

MA
57.0
57.0
57.0
0.00
0.000
57.00
-0.65
-0.69

ML








•
MP
58.0
58.0
57.0
0.58
0.118
57.67
-0.42
-0.46

MQ
55.0
60.0
56.0
2.65
0.591
57.00
-0.65
-0.69

MT








•
MV
69.0
69.0
69.0
0.00
0.000
69.00
3.51
3.46
ft
MY
57.0
57.0
56.0
0.58
0.118
56.67
-0.76
-0.81

N
63 0
620
61.0
1.00
0.236
62.00
1.09
1.04

NB








•
NH
56.0
57.0
57.0
0.58
0.118
56.67
-0.76
-0.81

NI








•
NJ
64.0
64.0
60.0
2.31
0.473
62.67
1.32
1.27

NK
53.0
53.0
57.0
2.31
0.473
54.33
-1.57
-1.62

NP
56.0
58.0
58.0
1.15
0.236
57.33
-0.53
-0.58

NZ
57.0
60.0
52.0
4.04
0.945
56.33
-0.88
-0.92

O
62.0
61.0
60.0
1.00
0.236
61.00
0.74
0.69

OA








• <
OB
49.0
48.0
48.0
0.58
0.118
48.33
-3.65
-3.70
u
OK
55.0
53.0
54.0
1.00
0.236
54.00
-1.69
-1.73

OL








•
OM
54.0
54.0
54.0
0.00
0.000
54.00
-1.69
-1.73

PB
59.0
60.0
59.0
0.58
0.118
59.33
0.16
0.12

PE
56.0
55.0
53.0
1.53
0.354
54.67
-1.45
-1.50

PI
57.0
58.0
57.0
0.58
0.118
57.33
-0.53
-0.58

PM
60.0
60.0
60.0
0.00
0.000
60.00
0.39
0.35

PQ








to
PU
63.0
61.0
64.0
1.53
0.354
62.67
1.32
1.27

PV
57.0
58.0
61.0
2.08
0.473
58.67
-0.07
-0.12

PW
59.0
56.0
56.0
1.73
0.354
57.00
-0.65
-0.69

Q
56.0
54.0
57.0
1.53
0.354
55.67
-1.11
-1.15

QJ
58.0
59.0
59.0
0.58
0.118
58.67
-0.07
-0.12

QP
60.0
56.0
64.0
4.00
0.945
60.00
0.39
0.35

QT
61.0
60.0
58.0
1.53
0.354
59.67
0.28
0.23

QU








•
QW








•
QX
65.0
66.0
65.0
0.58
0.118
65.33
2.24
2.19

QZ
52.0
49.0
52.0
1.73
0.354
51.00
-2.72
-2.77

R
60.0
61.0
61.0
0.58
0.118
60.67
0.62
0.58

RC








• ¦
RF
55.0
57.0
53.0
2.00
0.473
55.00
-1.34
-1.39

RH
51.0
53.0
49.0
2.00
0.473
51.00
-2.72
-2.77

RK








.*>
RL
72.0
72.0
72.0
0.00
0.000
72.00
4.55
4.50
ft
• =
0 a
No data submitted
Insufficient data
X a
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
11 s Below control limit
-------
	








	X

FMST-I.V PprfnrmBnrfi FvnlnnHnn! flnmma in WaW
4-Nov-1994
7/42
Cobalt-60







-v
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RM
55.0
59.0
57.0
2.00
0.473
57.00
-0.65
-0.69

RO
58.0
62.0
61.0
2.08
0.473
60.33
0.51
0.46

RR
55.0
57.0
59.0
2.00
0.473
57.00
-0.65
-0.69

RU
59.0
58.0
62.0
2.08
0.473
59.67
0.28
0.23

RV
64.0
60.0
54.0
5.03
1.345
59.33
0.16
0.12

RX
64.0
62.0
68.0
3.06
0.709
64.67
2.01
1.96

RZ
58.0
59.0
59.0
0.58
0.118
58.67
-0.07
-0.12

S
59.0
57.0
59.0
1.15
0.236
58.33
-0.18
-0.23

sc








•
SD
49.0
48.0
53.0
2.65
0.591
50.00
-3.07
-3.12

SF
59.0
61.0
56.0
2.52
0.591
58.67
-0.07
-0.12

SI
30.0
30.0
33.0
1.73
0.364
31i00
-9:65
-9:70
X
SK








•
SM
51.0
53.0
52.0
1.00
0.236
52.00
-2.38
-2.42

SN
68.0
63.0
54.0
7.09
2.245
61.67
0.97
0.92

SR
55.0
53.0
54.0
1.00
0.236
54.00
-1.69
-1.73

ss
60.0
62.0
58.0
2.00
0.473
60.00
0.39
0.35

ST
55.0
54.0
53.0
1.00
0.236
54.00
-1.69
-1.73

sv
62.0
71.0
63.0
4.93
1.120
65.33
2.24
2.19

sw
61.0
55.0
55.0
3.46
0.709
57.00
-0.65
-0.69

sx








•
sz
59.0
59.0
59.0
0.00
0.000
59.00
0.05
0.00

T
56.0
51.0
55.0
2.65
0.591
54.00
-1.69
-1.73

TB
72.0
70.0
72.0
1.15
0.236
71.33
4.32
4.27
tr
TC








•
TD
62.0
66.0
60.0
3.06
0.709
62.67
1.32
1.27

TE
63.0
61.0
62.0
1.00
0.236
62.00
1.09
1.04

TH
53.0
65.0
59.0
6.00
1.795
59.00
0.05
0.00

TI
64.0
61.0
62.0
1.53
0.354
62.33
1.20
1.15

TL
58.0
51.0
57.0
3.79
0.827
55.33
-1.22
-1.27

TO
59.0
59.0
59.0
0.00
0.000
59.00
0.05
0.00

TQ
57.0
57.0
56.0
0.58
0.118
56.67
-0.76
-0.81

TR
81.0
70.0
70.0
6.35
1.570
73.67
5.13
5.08
IT
TS
57.0
61.0
58.0
2.08
0.473
58.67
-0.07
-0.12

U
59.0
60.0
62.0
1.53
0.354
60.33
0.51
0.46

UE
57.0
58.0
57.0
0.58
0.118
57.33
-0.53
-0.58

UM








,• -
UN
63.0
64.0
65.0
1.00
0.236
64.00
1.78
1.73

UP
55.0
56.0
57.0
1.00
0.236
56.00
-0.99
-1.04

UR
46.0
46.0
48.0
1.15
0.236
46.67
-4.23
-4.27
U
UT
46.0
47.0
46.0
0.58
0.118
46.33
-4.34
-4.39

uv








•
uw
59.0
57.0
57.0
1.15
0.236
57.67
-0.42
-0.46

ux
56.0
59.0
52.0
3.51
0.827
55.67
-1.11
-1.15

UY
59.0
57.0
56.0
1.53
0.354
57.33
-0.53
-0.58

• =
No data submitted

TAG SYMBOLS

ft a Above control limit
hi
Q
Insufficient data
x =
Determined to be an outlier
•li a Below control limit
	,4
-------
C(	








	
8/42
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994

Cobalt>60








Lab
Res. 1



Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VA
57.0

56.0
59.0 1.53
0.354
57.33 -0.53 -0.58

VC
66.0

62.0
75.0 6.66
2.020
67.67 3.05 3.00

VE
62.0

60.0
60.0 1.15
0.236
60.67 0.62 0.58

VG
58.0

58.0
56.0 1.15
0.236
57.33 -0.53 -0.58

VH
54.0

58.0
55.0 2.08
0.473
55.67 -1.11 -1.15

VI








•
VM
59.0

63.0
62.0 2.08
0.473
61.33 0.85 0.81

VN








%
vo
62.0

59.0
61.0 1.53
0.354
60.67 0.62 0.58

VQ








•
VR








€
vs
64.0

65.0
63.0 1.00
0.236
64.00 1.78 1.73

VT
48.0

59.0
70.0 11.00
4.046
59.00 0.05 0.00

VU
58.0

55.0
55.0 1.73
0.354
56.00 -0.99 -1.04

VX








9
W
55.0

60.0
56.0 2.65
0.591
57.00 -0.65 -0.69

X
61.0

59.0
66.0 3.61
0.827
62.00 1.09 1.04

z
59.0

61.0
60.0 1.00
0.236
60.00 0.39 0.35





Data sorted by Laboratory Averag
re

Average

Tag

Lab
Average
Tag
Lab
Average Tag
Lab
31.00

X

SI
54.67

DT
57.00
RR
33.00

X

CM
55.00

RF
57.00
RM
41.33

X

AZ
55.00

BW
57.00
PW
45.33

Ji

CC
55.33

TL
57.00
MQ
46.33

U

UT
55.67

VH
57.00
MA
46.67

u

UR
55.67

UX
57.00
L
47.00

u

AW
55.67

Q
57.00
JS
48.33

u

OB
55.67

JI
57.00
HL
50.00

u

SD
55.67

GE
57.00
FJ
50.00

JJ

K
55.67

DL
57.00
EL
51.00



EH
55.67

AH
57.33
VG
51.00



QZ
56.00

VU
57.33
VA
52.00



SM
56.00

UP
57.33
UY
52.00



CJ
56.00

M
57.33
UE
53.67



GL
56.00

AN
57.33
PI
54.00



T
56.33

NZ
57.33
NP
54.00



ST
56.33

DE
57.33
EW
54.00



SR
56.67

TQ
57.33
AI
54.00



OM
56.67

NH
57.67
UW
54.00



OK
56.67

MY
57.67
MP
54.33



NK
56.67

LF
57.67
KL
54.33



DZ
56.67

DD
57.67
BO
54.33



A
57.00

W
57.67
BN
54.67



PE
57.00

SW
58.00
KX
• = No data submitted

TAG SYMBOLS

IT = Above control limit
0 = Insufficient data
	

x = Determined to be an outlier
= Below control limit
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994	9/42.
>- 	
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
58.00

EB
60.00

PM
62.67

TD
58.00

E
60.00

LT
62.67

PU
58.33

S
60.00

HK
62.67

NJ
58.33

EX
60.00

AU
62.67

CS
58.33

CO
60.33

U
63.00

DH
58.33

CA
60.33

RO
63.00

DG
58.33

BL
60.67

VO
63.33

LR
58.33

BC
60.67

VE
63.33

FZ
58.67

TS
60.67

R
63.67

CX
58.67

SF
60.67

HJ
63.67

AE
58.67

RZ
60.67

GQ
64.00

vs
58.67

QJ
60.67

CP
64.00

UN
58.67

PV
60.67

CE
64.00

AJ
58.67

JG
60.67

BA
64.33

LE
59.00

VT
61.00

O
64.33

DO
59.00

TO
61.00

AF
64.67

RX
59.00

TH
61.33

VM
65.33

sv
59.00

SZ
61.33

D
65.33

QX
59.00

I
61.67

SN
65.67

CK
59.00

GI
61.67

IC
66.33

JY
59.00

FU
61.67

CQ
67.00

AL
59.33

RV
61.67

C
67.67

VC
59.33

PB
61.67

BH
68.67
It
EN
59.33

J
61.67

BB
69.00
It
MV
59.67

RU
62.00

X
69.33
It
DM
59.67

QT
62.00

te
71.33
It
TB
59.67

BK
62.00

N
72.00
It
RL
59.67

AK
62.00

JE
73.67
It
TR
60.00

Z
62.00

BM
79.67
X
KH
60.00

ss
62.00

AY
381.00
X
HP
60.00

QP
62.33

n
483.00
532.00
X
X
FL
EZ
% responding labs	Frequency distribution
10-

-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
• s No data submitted	TAG SYMBOLS	IT = Above control limit
0 a Insufficient data	x = Determined to be an outlier	U = Below control limit
-------
10/42
EMSLrLV Performance Evaluation: Gamma in Water, 4-Nov-1994
Cobalt-60
% responding labs	Frequency distribution
10-

	""T
-6	-4	~2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
11/42
Zinc-65	Statistical Summary	198 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
34(17.2 %) Failed to respond »
7(3.5 %) Outliers
9(4.5 %) Out of control *
but not an outlier
Statistic
129(65.2 %) Within all limits
Respondents
19(9.6 %) 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
138.60
395.31
156273.61
285.22
38.60
0.10
105.00
5.00
0.01
Grand Avg 104.68
7.95
63.23
7.60
4.68
0.59
105.00
5.00
0.63
-------
12/42 EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
101.0
98.0
101.0
1.73
0.177
100.00
-0.81
0.00
AE
112.0
109.0
115.0
3.00
0.354
112.00
1.27
2.08
AF
94.0
109.0
104.0
7.64
0.886
102.33
-0.41
0.40
AH
108.0
106.0
110.0
2.00
0.236
108.00
0.58
1.39
AI
99.0
111.0
105.0
6.00
0.709
105.00
0.06
0.87
AJ
101.0
103.0
102.0
1.00
0.118
102.00
-0.46
0.35
AK
105.0
95.0
102.0
5.13
0.591
100.67
-0.69
0.12
AL
109.0
111.0
111.0
1.15
0.118
110.33
0.98
1.79
AN
103.0
97.0
96.0
3.79
0.413
98.67
-1.04
-0.23
AP







•
AU
107.0
90.0
110.0
10.79
1.345
102.33
-0.41
0.40
AW
98.0
96.0
86.0
6.43
0.709
93.33
-1.96
-1.15
AY
106.0
98.0
101.0
4.04
0.473
101.67
-0.52
0.29
AZ
107.0
120.0
126.0
9.71
1.233
117.67
2.25
3.06 rr
BA
122.0
117.0
112.0
5.00
0.591
117.00
2.13
2.94
BB
113.0
112.0
105.0
4.36
0.473
110.00
0.92
1.73
BC
102.0
100.0
106.0
3.06
0.354
102.67
-0.35
0.46
BG








BH
109.0
107.0
101.0
4.16
0.473
105.67
0.17
0.98
BI







•
BK
105.0
107.0
113.0
4.16
0.473
108.33
0.63
1.44
BL
100.0
100.0
100.0
0.00
0.000
100.00
-0.81
0.00
BM
106.0
108.0
105.0
1.53
0.177
106.33
0.29
1.10
BN
109.0
97.0
97.0
6.93
0.709
101.00
-0.64
0.17
BO
120.0
109.0
109.0
6.35
0.650
112.67
1.38
2.19
BW
77.0
81,0
72;d
4.51
0.532
76.67
-4.85
-4.04 x
C
99.0
100.0
102.0
1.53
0.177
100.33
-0.75
0.06
CA
94.0
93.0
94.0
0.58
0.059
93.67
-1.91
-1.10
CC
81.0
89.0
99.0
9.02
1.120
89.67
-2.60
-1.79
CE
111.0
110.0
105.0
3.21
0.354
108.67
0.69
1.50
CG







•-
CJ
74.0
88.0
82.0
7.02
0.827
81.33
-4.04
-3.23
CK
106.0
101.0
118.0
8.74
1.008
108.33
0.63
1.44
CM
51.0
61.0
62.0
5.51
0.591
54,67
-8.66-
-7.86 x
CO
130.0
113.0
108.0
11.53
1.570
117.00
2.13
2.94
CP
104.0
107.0
107.0
1.73
0.177
106.00
0.23
1.04
CQ
121.0
122.0
122.0
0.58
0.059
121.67
2.94
3.75 tr
CS
115.0
114.0
120.0
3.21
0.354
116.33
2.02
2.83
CX
118.0
109.0
102.0
8.02
0.945
109.67
0.86
1.67
D
113.0
114.0
112.0
1.00
0.118
113.00
1.44
2.25
DD
101.0
104.0
99.0
2.52
0.295
101.33
-0.58
0.23
DE
95.0
96.0
97.0
1.00
0.118
96.00
-1.50
-0.69
DG
111.0
111.0
111.0
0.00
0.000
111.00
1.10
1.91
DH
103.0
101.0
104.0
1.53
0.177
102.67
-0.35
0.46
DJ







9
• = No data submitted	TAG SYMBOLS	ft a Above control limit
0 2 Insufficient data	x = Determined to be an outlier	11 = Below control limit J
v*	... . i	.	,	. i i i. i	i .	¦	... I., i	¦' -y
-------
—N
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994 13 / 42
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
100.0
97.0
95.0
2.52
0.295
97.33
-1.27
-0.46

DM
130.0
130.0
125.0
2.89
0.295
128.33
4.10
4.91
IT
DO
105.0
104.0
100.0
2.65
0.295
103.00
-0.29
0.52

DT
116.0
110.0
108.0
4.16
0.473
111.33
1.15
1.96

DZ
88.0
97.0
91.0
4.58
0.532
92.00
-2.20
1
CO
CO

E
112.0
108.0
102.0
5.03
0.591
107.33
0.46
1.27

EA








•
EB
109.0
111.0
109.0
1.15
0.118
109.67
0.86
1.67

EL
104.0
102.0
106.0
2.00
0.236
104.00
-0.12
0.69

EN
124.0
120.0
100.0
12.86
1.795
114.67
1.73
2.54

EW
107.0
87.0
111.0
12.86
1.795
101.67
-0.52
0.29

EX
106.0
103.0
109.0
3.00
0.354
106.00
0.23
1.04

EZ
5153.0
5096.0
5096.0
33.46
5.621
5114;33
887.70
868.51
X
FJ
86.0
82.0
89.0
3.51
0.413
85.67
-3.29
-2.48

FK








•
FL
881.0
799.0
834.0
41.15
8.321
838.00
127.02
127.83
X
FU
104.0
109.0
102.0
3.61
0.413
105.00
0.06
0.87

FZ
114.0
106.0
112.0
4.16
0.473
110.67
1.04
1.85

GE
95.0
97.0
100.0
2.52
0.295
97.33
-1.27
-0.46

GI
110.0
112.0
105.0
3.61
0.413
109.00
0.75
1.56

GL
105.0
105.0
105.0
0.00
0.000
105.00
0.06
0.87

GQ
90.0
92.0
95.0
2.52
0.295
92.33
-2.14
-1.33

HI








m
HJ
110.0
95.0
115.0
10.41
1.345
106.67
0.34
1.15

HK
106.0
107.0
107.0
0.58
0.059
106.67
0.34
1.15

HL
111.0
111.0
111.0
0.00
0.000
111.00
1.10
1.91

HP









HX








V
I
110.0
101.0
104.0
4.58
0.532
105.00
0.06
0.87

IC
108.0
114.0
107.0
3.79
0.413
109.67
0.86
1.67

J
109.0
107.0
108.0
1.00
0.118
108.00
0.58
1.39

-------
14 / 42	EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LT
99.0
88.0
102.0
7.37
0.827
96.33
-1.45
-0.64
M
100.0
98.0
102.0
2.00
0.236
100.00
-0.81
0.00
MA
103.0
103.0
102.0
0.58
0.059
102.67
-0.35
0.46
ML







•
MP
111.0
112.0
105.0
3.79
0.413
109.33
0.81
1.62
MQ
112.0
109.0
100.0
6.24
0.709
107.00
0.40
1.21
MT








MV
118.0
115.0
115.0
1.73
0.177
116.00
1.96
2.77
MY
100.0
96.0
98.0
2.00
0.236
98.00
-1.16
-0.35
N
108.0
109.0
110.0
1.00
0.118
109.00
0.75
1.56
NB








NH
11Z.U
luy.u
luy.u
1.73
0.177
110.00
0.92
1.73
NI








NJ
90.0
96.0
100.0
5.03
0.591
95.33
-1.62
-0.81
NK
118.0
115.0
100.0
9.64
1.120
111.00
1.10
1.91
NP
103.0
107.0
108.0
2.65
0.295
106.00
0.23
1.04
NZ
83.0
95.0
109.0
13.01
2.020
95.67
-1.56
-0.75
O
107.0
109.0
109.0
1.15
0.118
108.33
0.63
1.44
OA







•<
OB







•
OK
94.0
99.0
92.0
3.61
0.413
95.00
-1.68
-0.87
OL








OM
95.0
96.0
102.0
3.79
0.413
97.67
-1.21
-0.40
PB
102.0
103.0
102.0
0.58
0.059
102.33
-0.41
0.40
PE
107.0
106.0
99.0
4.36
0.473
104.00
-0.12
0.69
PI
105.0
94.0
101.0
5.57
0.650
100.00
-0.81
0.00
PM
113.0
103.0
99.0
7.21
0.827
105.00
0.06
0.87
PQ








PU
107.0
102.0
116.0
7.09
0.827
108.33
0.63
1.44
PV
101.0
104.0
111.0
5.13
0.591
105.33
0.11
0.92
PW
107.0
116.0
96.0
10.02
1.345
106.33
0.29
1.10
Q
110.0
104.0
105.0
3.21
0.354
106.33
0.29
1.10
QJ
96.0
112.0
108.0
8.33
0.945
105.33
0.11
0.92
QP
112.0
113.0
112.0
0.58
0.059
112.33
1.33
2.14
QT
108.0
108.0
103.0
2.89
0.295
106.33
0.29
1.10
QU







«-
QW







e
QX
105.0
104.0
106.0
1.00
0.118
105.00
0.06
0.87
QZ
91.0
99.0
96.0
4.04
0.473
95.33
-1.62
-0.81
R
110.0
109.0
106.0
2.08
0.236
108.33
0.63
1.44
RC








RF
100.0
108.0
107.0
4.36
0.473
105.00
0.06
0.87
RH
95.0
89.0
94.0
3.21
0.354
92.67
-2.08
-1.27
RK







«
RL
92.0
92.0
92.0
0.00
0.000
92.00
-2.20
-1.39
• = No data submitted	TAG SYMBOLS	1t s Above control limit
I 0 = Insufficient data	x = Determined to be an outlier	s Below control limit
-------
~"V
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994 15 / 42
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
RM
91.0
93.0
89.0
2.00
0.236
91.00
-2.37
-1.56

RO
96.0
108.0
110.0
7.57
0.827
104.67
0.00
0.81

RR
110.0
103.0
106.0
3.51
0.413
106.33
0.29
1.10

RU
108.0
107.0
109.0
1.00
0.118
108.00
0.58
1.39

RV
88.0
115.0
95.0
14.01
2.133
99.33
-0.93
-0.12

RX
99.0
100.0
107.0
4.36
0.473
102.00
-0.46
0.35

RZ
103.0
100.0
103.0
1.73
0.177
102.00
-0.46
0.35

S
100.0
106.0
101.0
3.21
0.354
102.33
-0.41
0.40

sc









SD
99.0
93.0
96.0
3.00
0.354
96.00
-1.50
-0.69

SF
116.0
105.0
114.0
5.86
0.650
111.67
1.21
2.02

SI
58:0
48.0
54.0
5.03
0.591
53.33
-8.89
^8.08
X
SK








•
SM
98.0
93.0
92.0
3.21
0.354
94.33
-1.79
-0.98

SN
130.0
120.0
122.0
5.29
0.591
124.00
3.35
4.16
It
SR
102.0
108.0
104.0
3.06
0.354
104.67
0.00
0.81

ss
96.0
101.0
112.0
8.19
0.945
103.00
-0.29
0.52

ST
96.0
97.0
105.0
4.93
0.532
99.33
-0.93
-0.12

sv
93.0
111.0
119.0
13.32
2.020
107.67
0.52
1.33

sw
111.0
99.0
99.0
6.93
0.709
103.00
-0.29
0.52

sx








•
sz
104.0
107.0
109.0
2.52
0.295
106.67
0.34
1.15

T
105.0
99.0
101.0
3.06
0.354
101.67
-0.52
0.29

TB
116.0
116.0
111.0
2.89
0.295
114.33
1.67
2.48

TC








•
TD
102.0
110.0
116.0
7.02
0.827
109.33
0.81
1.62

TE
116.0
109.0
117.0
4.36
0.473
114.00
1.61
2.42

TH
115.0
101.0
108.0
7.00
0.827
108.00
0.58
1.39

n
112.0
115.0
109.0
3.00
0.354
112.00
1.27
2.08

TL
88.0
94.0
92.0
3.06
0.354
91.33
-2.31
-1.50

TO
110.0
107.0
108.0
1.53
0.177
108.33
0.63
1.44

TQ
112.0
98.0
111.0
7.81
0.827
107.00
0.40
1.21

TR
105.0
126.0
122.0
11.15
1.458
117.67
2.25
3.06
rr
TS
102.0
104.0
101.0
1.53
0.177
102.33
-0.41
0.40

U
105.0
102.0
105.0
1.73
0.177
104.00
-0.12
0.69

UE
99.0
100.0
96.0
2.08
0.236
98.33
-1.10
-0.29

UM









UN
113.0
117.0
116.0
2.08
0.236
115.33
1.85
2.66

UP
100.0
104.0
105.0
2.65
0.295
103.00
-0.29
0.52

UR
96.0
106.0
100.0
5.03
0.591
100.67
-0.69
0.12

UT
88.0
96.0
96.0
4.62
0.473
93.33
-1.96
-1.15

UV








«
UW
99.0
103.0
96.0
3.51
0.413
99.33
-0.93
-0.12

UX
106.0
104.0
99.0
3.61
0.413
103.00
-0.29
0.52

UY
101.0
112.0
108.0
5.57
0.650
107.00
0.40
1.21

• =
0 a
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
!]• s Below control limit
^	'J
-------
r,	







	^
16/42
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994

Zinc-65








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VA
100.0
95.0
101.0 3.21
0.354
98.67 -1.04 -0.23

VC
114.0
129.0
112.0 9.29
1.008
118.33 2.37 3.18

VE
116.0
117.0
117.0 0.58
0.059
116.67 2.08 2.89

VG
111.0
120.0
119.0 4.93
0.532
116.67 2.08 2.89

VH
97.0
102.0
96.0 3.21
0.354
98.33 -1.10 -0.29

VI








VM
105.0
99.0
70.0 18.72
3.033
91.33 -2.31 -1.50

VN







•
vo
113.0
114.0
112.0 1.00
0.118
113.00 1.44 2.25

VQ







•
VR







•
vs
110.0
111.0
103.0 4.36
0.473
108.00 0.58 1.39

VT
74.0
91.0
108.0 17.00
2.921
91.00 -2.37 -1.56

VU
105.0
100.0
99.0 3.21
0.354
101.33 -0.58 0.23

vx








w
101.0
87.0
77.0 12.06
1.795
88.33 -2.83 -2.02

X
101.0
105.0
112.0 5.57
0.650
106.00 0.23 1.04

z
112.0
113.0
109.0 2.08
0.236
111.33 1.15 1.96




Data sorted by Laboratory Averaj
re

Average

Tag
Lab
Average
Tag
Lab
Average Tag
Lab
9.33

X
JG
95.67

NZ
100.67
UR
53.33

X
SI
96.00

SD
100.67
L
54.67

X
CM
96.00

DE
100.67
AK
76.67

X
BW
96.33

LT
101.00
BN
81.33


CJ
97.00

JI
101.33
VU
85.67


FJ
97.33

GE
101.33
DD
88.33


W
97.33

DL
101.67
T
89.67


CC
97.67

OM
101.67
EW
91.00


VT
98.00

MY
101.67
AY
91.00


RM
98.33

VH
102.00
RZ
91.33


VM
98.33

UE
102.00
RX
91.33


TL
98.67

VA
102.00
AJ
92.00


RL
98.67

AN
102.33
TS
92.00


DZ
99.00

KX
102.33
S
92.33


GQ
99.00

JY
102.33
PB
92.67


RH
99.33

UW
102.33
AU
92.67


K
99.33

ST
102.33
AF
93.33


UT
99.33

RV
102.67
MA
93.33


AW
100.00

PI
102.67
DH
93.67


CA
100.00

M
102.67
BC
94.33


SM
100.00

BL
103.00
UX
95.00


OK
100.00

A
103.00
UP
95.33


QZ
100.33

KL
103.00
SW
95.33


NJ
100.33

C
103.00
SS
• s No data submitted

TAG SYMBOLS

1T = Above control limit
0 = Insufficient data
>4-	

x = Determined to be an outlier
h Below control limit
	
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994	17 / 42
Zinc-65
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
103.00

DO
107.00

UY
111.00

DG
104.00

U
107.00

TQ
111.33

Z
104.00

PE
107.00

MQ
111.33

DT
104.00

EL
107.33

E
111.67

SF
104.67

SR
107.67

SV
112.00

n
104.67

RO
108.00

vs
112.00

AE
105.00

RF
108.00

TH
112.33

QP
105.00

QX
108.00

RU
112.67

BO
105.00

PM
108.00

J
113.00

VO
105.00

I
108.00

AH
113.00

D
105.00

GL
108.33

TO
114.00

TE
105.00

FU
108.33

R
114.33

TB
105.00

AI
108.33

PU
114.67

EN
105.33

QJ
108.33

O
115.33

UN
105.33

PV
108.33

CK
116.00

MV
105.67

BH
108.33

BK
116.33

cs
106.00

X
108.67

CE
116.67

VG
106.00

NP
109.00

N
116.67

VE
106.00

JE
109.00

GI
117.00

CO
106.00

EX
109.33

TD
117.00

BA
106.00

CP
109.33

MP
117.67
tr
TR
106.33

RR
109.67

JS
117.67
ir
AZ
106.33

QT
109.67

IC
118.33
it
VC
106.33

Q
109.67

EB
119.00
It
LE
106.33

PW
109.67

CX
121.67
it
CQ
106.33

BM
110.00

NH
124.00
IT
SN
106.67

sz
110.00

BB
128.33
tr
DM
106.67

LF
110.33

AL
130.33
it
LR
106.67

HK
110.67

FZ
149.67
X
KH
106.67

HJ
111.00

NK
838.00
X
FL



111.00

HL
5114.33
X
EZ
% responding labs Frequency distribution
10 			
i	iiir	r	I	i	i	i	i	i	t
-6	-4-2	0+2+4+4
Normalized deviation of the mean from the known value
• s 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
	0
¦¦¦-¦¦¦Mliililiju -¦aa-


-------
18/42
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Zinc-60
% responding labs	Frequency distribution
10.. J u .. u II u J u j .. j ¦ a ¦ u u u u j 	 	
l.f.lllflllll
oK	^	T	-,		T - T - .
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
19/42
Cesium-134
Statistical Summary
198 Participants
The known value of this nuclide is 24.0 pCi/1 with an expected precision of 5.0; the control limits
are 15.3 to 32.7; the warning regions are 15.3 to 18.2 and 29.8 to 32.7
33(16.7 %) Failed to respond
5(2.5 %) Outliers
. 156(78.8 %) Within all limits
4(2.0 %) In warning zone
but within control
Statistic
Respondents
Non-outliers
Mean
25.24
Grand Avg 22.95
Std. Dev.
18.63
2.27
Variance
346.96
5.15
% Coef. of Var.
73.80
9.89
% deviation of mean from known value
5.16
-4.38
Norm. dev. of mean from known value
0.07
-0.46
Median
23.00
23.00
% deviation of median from known value
-4.17
-4.17
Norm. dev. of median from known value
-0.05
-0.44
6(3.6 %) More than 3 norm. S.D.
3(1.8 %) Between 2 and 3 norm. S.D
; 126(76.4 %) Within 1 norm. S.D.
of known value
% 30(18.2 %) Between 1 and 2 norm. S.D.
-------
({	







	^
20 / 42 EMSL-LV Performance Evaluation: Gamma in Water,
4-Nov-1994

Cesium-134







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
23.0
22.0
21.0
1.00
0.236
22.00
-0.33
-0.69
AE
25.0
23.0
24.0
1.00
0.236
24.00
0.36
0.00
AF
25.0
24.0
21.0
2.08
0.473
23.33
0.13
-0.23
AH
26.0
25.0
22.0
2.08
0.473
24.33
0.48
0.12
AI
23.0
23.0
23.0
0.00
0.000
23.00
0.02
-0.35
AJ
23.0
23.0
23.0
0.00
0.000
23.00
0.02
-0.35
AK
24.0
24.0
24.0
0.00
0.000
24.00
0.36
0.00
AL
27.0
28.0
33.0
3.21
0.709
29.33
2.21
1.85
AN
21.0
20.0
21.0
0.58
0.118
20.67
-0.79
-1.15
AP







•
AU
21.0
ZZ.U
21.0
0.58
0.118
21.33
-0.56
-0.92
AW
19.0
17.0
20.0
1.53
0.354
18.67
-1.48
-1.85
AY
27.0
25.0
25.0
1.15
0.236
25.67
0.94
0.58
AZ
31.0
27.0
36.0
4.51
1.120
31.33
2.90
2.54
BA
24.0
23.0
24.0
0.58
0.118
23.67
0.25
-0.12
BB
23.0
23.0
22.0
0.58
0.118
22.67
-0.10
-0.46
BC
22.0
22.0
22.0
0.00
0.000
22.00
-0.33
-0.69
BO








BH
22.0
21.0
23.0
1.00
0.236
22.00
-0.33
-0.69
BI








BK
24.0
23.0
24.0
0.58
0.118
23.67
0.25
-0.12
BL
22.0
23.0
20.0
1.53
0.354
21.67
-0.44
-0.81
BM
23.0
22.0
20.0
1.53
0.354
21.67
-0.44
-0.81
BN
22.0
22.0
22.0
0.00
0.000
22.00
-0.33
-0.69
BO
21.0
24.0
23.0
1.53
0.354
22.67
-0.10
-0.46
BW
24.0
21.0
25.0
2.08
0.473
23.33
0.13
-0.23
C
25.0
24.0
24.0
0.58
0.118
24.33
0.48
0.12
CA
22.0
20.0
18.0
2.00
0.473
20.00
-1.02
-1.39
CC
16.0
11.0
19.0
4.04
0.945
15.33
-2.64
-3.00
CE
23.0
24.0
22.0
1.00
0.236
23.00
0.02
-0.35
CG







k-.
CJ
22.0
17.0
20.0
2.52
0.591
19.67
-1.14
-1.50
CK
24.0
23.0
25.0
1.00
0.236
24.00
0.36
0.00
CM
16.0
14.0
17.0
1.53
0.354
15.67
-2.52
-2.89
CO
24.0
15.0
21.0
4.58
1.120
20.00
-1.02
-1.39
CP
24.0
23.0
23.0
0.58
0.118
23.33
0.13
-0.23
CQ
26.0
28.0
29.0
1.53
0.354
27.67
1.63
1.27
CS
25.0
24.0
25.0
0.58
0.118
24.67
0.59
0.23
CX
25.0
21.0
29.0
4.00
0.945
25.00
0.71
0.35
D
25.0
24.0
24.0
0.58
0.118
24.33
0.48
0.12
DD
24.0
23.0
22.0
1.00
0.236
23.00
0.02
-0.35
DE
21.0
21.0
22.0
0.58
0.118
21.33
-0.56
-0.92
DG
22.0
22.0
22.0
0.00
0.000
22.00
-0.33
-0.69
DH
23.0
22.0
23.0
0.58
0.118
22.67
-0.10
-0.46
DJ







' m
• =
No data submitted

TAG SYMBOLS

ft 3 Above control limit
0 a
v-	
Insufficient data
X s
Determined to be an outlier
. JJ 5 Below control limit
	jj
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994 21/42
Cesium-134
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
22.0
26.0
21.0
2.65
0.591
23.00
0.02
-0.35
DM
27.0
28.0
27.0
0.58
0.118
27.33
1.52
1.15
DO
16.0
25.0
25.0
5.20
1.120
22.00
-0.33
-0.69
DT
25.0
30.0
25.0
2.89
0.591
26.67
1.29
0.92
DZ
30.0
26.0
25.0
2.65
0.591
27.00
1.40
1.04
E
24.0
24.0
24.0
0.00
0.000
24.00
0.36
0.00
EA







• •
EB
22.0
22.0
22.0
0.00
0.000
22.00
-0.33
-0.69
EL
27.0
21.0
22.0
3.21
0.709
23.33
0.13
-0.23
EN
29.0
24.0
26.0
2.52
0.591
26.33
1.17
0.81
EW
22.0
24.0
27.0
2.52
0.591
24.33
0.48
0.12
EX
19.0
25.0
22.0
3.00
0.709
22.00
-0.33
-0.69
EZ
20.0
24.0
27.0
3.51
0.827
23.67
0.25
-0.12
FJ
23.0
22.0
23.0
0.58
0.118
22.67
-°10
-0.46
FK







•
FL
18610
179.0
200.0
10.82
3.821
188100:
57,17
56.81 X
FU
22.0
22.0
23.0
0.58
0.118
22.33
-0.21
-0.58
FZ
25.0
24.0
23.0
1.00
0.236
24.00
0.36
0.00
GE
21.0
26.0
22.0
2.65
0.591
23.00
0.02
-0.35
GI
22.0
23.0
22.0
0.58
0.118
22.33
-0.21
-0.58
GL
20.0
20.0
21.0
0.58
0.118
20.33
-0.91
-1.27
GQ
25.0
25.0
24.0
0.58
0.118
24.67
0.59
0.23
HI







»:
HJ
25.0
20.0
24.0
2.65
0.591
23.00
0.02
-0.35
HK
24.0
24.0
24.0
0.00
0.000
24.00
0.36
0.00
HL
22.0
22.0
22.0
0.00
0.000
22.00
-0.33
-0.69
HP
177;0
199.0
188.0
11.00
4.046
188i00
57il7t
56.81 x
HX







•-
I
24.0
26.0
25.0
1.00
0.236
25.00
0.71
0.35
IC
28.0
23.0
27.0
2.65
0.591
26.00
1.06
0.69
J
22.0
20.0
21.0
1.00
0.236
21.00
-0.68
-1.04
JE
27.0
24.0
22.0
2.52
0.591
24.33
0.48
0.12
JG
22.0
21.0
22.0
0.58
0.118
21.67
-0.44
-0.81
J1
19.0
20.0
22.0
1.53
0.354
20.33
-0.91
-1.27
JR







•
JS
21.0
21.0
20.0
0.58
0.118
20.67
-0.79
-1.15
JY
22.0
26.0
22.0
2.31
0.473
23.33
0.13
-0.23
K
21.0
24.0
22.0
1.53
0.354
22.33
-0.21
-0.58
KH
23.0
33.0
38.0
7.64
2.470
31.33
2.90
2.54
KL
70.0
70.0
70.0
0.00
0.000
70.0G
1630
16.93 x
KX
26.0
25.0
24.0
1.00
0.236
25.00
0.71
0.35
L
23.0
21.0
23.0
1.15
0.236
22.33
-0.21
-0.58
LE
25.0
27.0
30.0
2.52
0.591
27.33
1.52
1.15
LF
20.0
22.0
22.0
1.15
0.236
21.33
-0.56
-0.92
LR
Mg
36.0
41.0
7.64
2.470
34.33
.3194
3J58 x
• 3
No data submitted

TAG SYMBOLS

ft a Above control limit
0 s Insufficient data	x = Determined to be an outlier	U = Below control limit
-------
22 / 42 EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Cesium-134
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LT
23.0
23.0
24.0
0.58
0.118
23.33
0.13
-0.23
M
22.0
23.0
24.0
1.00
0.236
23.00
0.02
-0.35
MA
21.0
20.0
22.0
1.00
0.236
21.00
-0.68
-1.04
ML








MP
23.0
24.0
21.0
1.53
0.354
22.67
-0.10
-0.46
MQ
24.0
27.0
21.0
3.00
0.709
24.00
0.36
0.00
MT








MV
25.0
25.0
25.0
0.00
0.000
25.00
0.71
0.35
MY
21.0
22.0
22.0
0.58
0.118
21.67
-0.44
-0.81
N
22.0
24.0
24.0
1.15
0.236
23.33
0.13
-0.23
NB







•
NH
22.0
21.0
21.0
0.58
0.118
21.33
-0.56
-0.92
NI







•
NJ
19.0
24.0
24.0
2.89
0.591
22.33
-0.21
-0.58
NK
24.0
25.0
21.0
2.08
0.473
23.33
0.13
-0.23
NP
21.0
23.0
20.0
1.53
0.354
21.33
-0.56
-0.92
NZ
20.0
29.0
28.0
4.93
1.120
25.67
0.94
0.58
O
24.0
24.0
24.0
0.00
0.000
24.00
0.36
0.00
OA







I**
OB







•
OK
20.0
23.0
22.0
1.53
0.354
21.67
-0.44
-0.81
OL








OM
22.0
21.0
21.0
0.58
0.118
21.33
-0.56
-0.92
PB
28.0
27.0
28.0
0.58
0.118
27.67
1.63
1.27
PE
22.0
22.0
22.0
0.00
0.000
22.00
-0.33
-0.69
PI
21.0
21.0
22.0
0.58
0.118
21.33
-0.56
-0.92
PM
22.0
26.0
21.0
2.65
0.591
23.00
0.02
-0.35
PQ







•
PU
24.0
22.0
20.0
2.00
0.473
22.00
-0.33
-0.69
PV
20.0
24.0
27.0
3.51
0.827
23.67
0.25
-0.12
PW
23.0
23.0
22.0
0.58
0.118
22.67
-0.10
-0.46
Q
25.0
24.0
26.0
1.00
0.236
25.00
0.71
0.35
QJ
21.0
20.0
22.0
1.00
0.236
21.00
-0.68
-1.04
QP
25.0
23.0
21.0
2.00
0.473
23.00
0.02
-0.35
QT
23.0
24.0
23.0
0.58
0.118
23.33
0.13
-0.23
QU







•
QW







• -
QX
24.0
24.0
24.0
0.00
0.000
24.00
0.36
0.00
QZ
20.0
18.0
20.0
1.15
0.236
19.33
-1.25
-1.62
R
23.0
22.0
24.0
1.00
0.236
23.00
0.02
-0.35
RC







••
RF
26.0
25.0
22.0
2.08
0.473
24.33
0.48
0.12
RH
25.0
21.0
26.0
2.65
0.591
24.00
0.36
0.00
RK







•
RL
19.0
19.0
19.0
0.00
0.000
19.00
-1.37
-1.73
• s No data submitted	TAG SYMBOLS	ft a Above control limit
0 s Insufficient data	x = Determined to be an outlier	11 s Below control limit J
-------
¦	
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994 23/42
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RM
23.0
25.0
25.0
1.15
0.236
24.33
0.48
0.12
RO
21.0
22.0
21.0
0.58
0.118
21.33
-0.56
-0.92
RR
24.0
22.0
23.0
1.00
0.236
23.00
0.02
-0.35
RU
21.0
21.0
22.0
0.58
0.118
21.33
-0.56
-0.92
RV
27.0
22.0
26.0
2.65
0.591
25.00
0.71
0.35
RX
25.0
26.0
25.0
0.58
0.118
25.33
0.83
0.46
RZ
23.0
24.0
23.0
0.58
0.118
23.33
0.13
-0.23
S
23.0
22.0
22.0
0.58
0.118
22.33
-0.21
-0.58
sc







V
SD
18.0
21.0
22.0
2.08
0.473
20.33
-0.91
-1.27
SF
18.0
20.0
21.0
1.53
0.354
19.67
-1.14
-1.50
81
11.0
12.0
13.0
1.00
0.236
12.00
*3.79'
-4;16 X
SK







»
SM
20.0
23.0
20.0
1.73
0.354
21.00
-0.68
-1.04
SN
24.0
27.0
23.0
2.08
0.473
24.67
0.59
0.23
SR
25.0
24.0
21.0
2.08
0.473
23.33
0.13
-0.23
ss
24.0
24.0
23.0
0.58
0.118
23.67
0.25
-0.12
ST
21.0
22.0
23.0
1.00
0.236
22.00
-0.33
-0.69
sv
26.0
26.0
20.0
3.46
0.709
24.00
0.36
0.00
sw
26.0
20.0
21.0
3.21
0.709
22.33
-0.21
-0.58
sx







•j
sz
23.0
22.0
22.0
0.58
0.118
22.33
-0.21
-0.58
T
21.0
24.0
22.0
1.53
0.354
22.33
-0.21
-0.58
TB
26.0
27.0
27.0
0.58
0.118
26.67
1.29
0.92
TC







• ¦ >
TD
26.0
25.0
24.0
1.00
0.236
25.00
0.71
0.35
TE
21.0
21.0
22.0
0.58
0.118
21.33
-0.56
-0.92
TH
22.0
22.0
22.0
0.00
0.000
22.00
-0.33
-0.69
TI
22.0
21.0
22.0
0.58
0.118
21.67
-0.44
-0.81
TL
24.0
19.0
28.0
4.51
1.120
23.67
0.25
-0.12
TO
22.0
23.0
23.0
0.58
0.118
22.67
-0.10
-0.46
TQ
24.0
22.0
20.0
2.00
0.473
22.00
-0.33
-0.69
TR
24.0
21.0
15.0
4.58
1.120
20.00
-1.02
-1.39
TS
19.0
21.0
20.0
1.00
0.236
20.00
-1.02
-1.39
U
25.0
24.0
25.0
0.58
0.118
24.67
0.59
0.23
UE
25.0
24.0
24.0
0.58
0.118
24.33
0.48
0.12
UM







•
UN
25.0
25.0
25.0
0.00
0.000
25.00
0.71
0.35
UP
23.0
23.0
24.0
0.58
0.118
23.33
0.13
-0.23
UR
29.0
23.0
28.0
3.21
0.709
26.67
1.29
0.92
UT
21.0
24.0
19.0
2.52
0.591
21.33
-0.56
-0.92
UV







•
UW
22.0
23.0
22.0
0.58
0.118
22.33
-0.21
-0.58
UX
18.0
19.0
20.0
1.00
0.236
19.00
-1.37
-1.73
UY
20.0
25.0
23.0
2.52
0.591
22.67
-0.10
-0.46
• s
[am
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft a Above control limit
li s Below control limit
-------
(c	
24/42









	^
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994

r
Cesium-134









Lab
Res. 1




Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
VA
21.0
21.0

21.0
0.00
0.000
21.00 -0.68 -1.04

VC
29.0
27.0

22.0
3.61
0.827
26.00 1.06 0.69

VE
21.0
23.0

23.0
1.15
0.236
22.33 -0.21 -0.58

VG
22.0
22.0

23.0
0.58
0.118
22.33 -0.21 -0.58

VH
23.0
25.0

25.0
1.15
0.236
24.33 0.48 0.12

VI









6
VM
20.0
19.0

19.0
0.58
0.118
19.33 -1.25 -1.62

VN









9
vo
24.0
22.0

21.0
1.53
0.354
22.33 -0.21 -0.58

VQ









'
VR









•
vs
24.0
24.0

23.0
0.58
0.118
23.67 0.25 -0.12

VT
16.0
20.0

24.0
4.00
0.945
20.00 -1.02 -1.39

VU
21.0
21.0

21.0
0.00
0.000
21.00 -0.68 -1.04

vx









•
w
21.0
20.0

22.0
1.00
0.236
21.00 -0.68 -1.04

X
22.0
22.0

23.0
0.58
0.118
22.33 -0.21 -0.58

z
24.0
23.0

22.0
1.00
0.236
23.00 0.02 -0.35




Data sorted by Laboratory Averag
;e

Average

Tag
Lab

Average
Tag
Lab
Average Tag
Lab
12.00

X
SI


21.00

QJ
22.00
PE
15.33


cc


21.00

MA
22.00
HL
15.67


CM


21.00

J
22.00
EX
18.67


AW


21.33

UT
22.00
EB
19.00


UX


21.33

TE
22.00
DO
19.00


RL


21.33

RU
22.00
DG
19.33


VM


21.33

RO
22.00
BN
19.33


QZ


21.33

PI
22.00
BH
19.67


SF


21.33

OM
22.00
BC
19.67


CJ


21.33

NP
22.00
A
20.00


VT


21.33

NH
22.33
X
20.00


TS


21.33

LF
22.33
VO
20.00


TR


21.33

DE
22.33
VG
20.00


CO


21.33

AU
22.33
VE
20.00


CA


21.67

TI
22.33
UW
20.33


SD


21.67

OK
22.33
T
20.33


JI


21.67

MY
22.33
sz
20.33


GL


21.67

JG
22.33
sw
20.67


JS


21.67

BM
22.33
s
20.67


AN


21.67

BL
22.33
NJ
21.00


W


22.00

TQ
22.33
L
21.00


VU


22.00

TH
22.33
K
21.00


VA


22.00

ST
22.33
GI
21.00


SM


22.00

PU
22.33
FU
• = No data submitted



TAG SYMBOLS

ft 2 Above control limit
[03 Insufficient data


X
= Determined to be an outlier
11 = Below control limit
	—V
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994 25/42
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
22.67

UY
23.33

BW
24.67

GQ
22.67

TO
23.33

AF
24.67

CS
22.67

PW
23.67

VS
25.00

UN
22.67

MP
23.67

TL
25.00

TD
22.67

FJ
23.67

SS
25.00

RV
22.67

DH
23.67

PV
25.00

Q
22.67

BO
23.67

EZ
25.00

MV
22.67

BB
23.67

BK
25.00

KX
23.00

Z
23.67

BA
25.00

I
23.00

RR
24.00

SV
25.00

CX
23.00

R
24.00

RH
25.33

RX
23.00

QP
24.00

QX
25.67

NZ
23.00

PM
24.00

O
25.67

AY
23.00

M
24.00

MQ
26.00

VC
23.00

HJ
24.00

HK
26.00

IC
23.00

GE
24.00

FZ
26.33

EN
23.00

DL
24.00

E
26.67

UR
23.00

DD
24.00

CK
26.67

TB
23.00

CE
24.00

AK
26.67

DT
23.00

AJ
24.00

AE
27.00

DZ
23.00

AI
24.33

VH
27.33

LE
23.33

UP
24.33

UE
27.33

DM
23.33

SR
24.33

RM
27.67

PB
23.33

RZ
24.33

RF
27.67

CQ
23.33

QT
24.33

JE
29.33

AL
23.33

NK
24.33

EW
31.33

KH
23.33

N
24.33

D
31.33

AZ
23.33

LT
24.33

C
34.33
X
LR
23.33

JY
24.33

AH
70.00
X
KL
23.33

FT,
24.67

U
188.00
X
HP
23.33

CP
24.67

SN
188.00
X
FL
responding labs
Frequency distribution
—.I.llllll
10-
0	T
-6
¦T"-
4*
-r
M
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
+6
• a No data submitted	TAG SYMBOLS	It — Above control limit
0 = Insufficient data	x s Determined to be an outlier	= Below control limit
-------
26/42 EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Cesium-134
% responding labs	Frequency distribution
,0.	
HiHi,
-6	-4	-2	0+2+4	*6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
27/42
Cesium-137
Statistical Summary
198 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(16.7 %) Failed to respond %
10(5.1 %) Outliers •
11 (5.6 %) Out of control •
but not an outlier
Statistic
130(65.7 %) Within all limits
Respondents
•• 14(7.1 %) In warning zone
but within control
Non-outliers
Mean
56.08
Grand Avg 51.92
Std. Dev.
43.52
3.61
Variance
1893.84
13.06
% Coef. of Var.
77.60
6.96
% deviation of mean from known value
14.45
5.96
Norm. dev. of mean from known value
0.16
0.81
Median
51.33
51.67
% deviation of median from known value
4.76
5.44
Norm. dev. of median from known value
0.05
0.74
21(12.7 %) More than 3 norm. S.D. \
14(8.5 %) Between 2 and 3 norm. S.D. •
• 74(44.8 %) Within 1 norm. S.D.
of known value
56(33.9 %) Between 1 and 2 norm. S.D.
-------
28/42 EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
51.0
51.0
52.0
0.58
0.118
51.33
-0.20
0.81
AE
59.0
54.0
56.0
2.52
0.591
56.33
1.53
2.54
AF
49.0
55.0
54.0
3.21
0.709
52.67
0.26
1.27
AH
53.0
51.0
50.0
1.53
0.354
51.33
-0.20
0.81
AI
52.0
55.0
54.0
1.53
0.354
53.67
0.60
1.62
AJ
51.0
51.0
51.0
0.00
0.000
51.00
-0.32
0.69
AK
57.0
56.0
58.0
1.00
0.236
57.00
1.76
2.77
AL
52.0
62.0
48.0
7.21
2.245
54.00
0.72
1.73
AN
47.0
46.0
48.0
1.00
0.236
47.00
-1.70
-0.69
AP







• -
AU
50.0
51.0
50.0
0.58
0.118
50.33
-0.55
0.46
AW
56.0
58.0
52.0
3.06
0.709
55.33
1.18
2.19
AY
52.0
50.0
49.0
1.53
0.354
50.33
-0.55
0.46
AZ
47.0
46.0
51.0
2.65
0.591
48.00
-1.36
-0.35
BA
49.0
50.0
50.0
0.58
0.118
49.67
-0.78
0.23
BB
53.0
52.0
51.0
1.00
0.236
52.00
0.03
1.04
BC
51.0
50.0
51.0
0.58
0.118
50.67
-0.43
0.58
BG
66.0
67.0





0
BH
52.0
52.0
51.0
0.58
0.118
51.67
-0.09
0.92
BI







• '
BK
53.0
53.0
53.0
0.00
0.000
53.00
0.37
1.39
BL
52.0
52.0
50.0
1.15
0.236
51.33
-0.20
0.81
BM
48.0
54.0
53.0
3.21
0.709
51.67
-0.09
0.92
BN
54.0
53.0
57.0
2.08
0.473
54.67
0.95
1.96
BO
55.0
52.0
53.0
1.53
0.354
53.33
0.49
1.50
BW
52.0
58.0
53.0
3.21
0.709
54.33
0.84
1.85
C
47.0
48.0
49.0
1.00
0.236
48.00
-1.36
-0.35
CA
48.0
46.0
46.0
1.15
0.236
46.67
-1.82
-0.81
CC
42.0
45.0
45.0
1.73
0.354
44.00
-2.74
-1.73
CE
53.0
55.0
50.0
2.52
0.591
52.67
0.26
1.27
cg







•
CJ
57.0
53.0
53.0
2.31
0.473
54.33
0.84
1.85
CK
59.0
62.0
61.0
1.53
0.354
60.67
3.03
4.04 ft
CM
22.0
29.0

4.36
0.945
24.00
-9.67
-8.66 x
CO
56.0
59.0
50.0
4.58
1.120
55.00
1.07
2.08
CP
50.0
51.0
51.0
0.58
0.118
50.67
-0.43
0.58
CQ
58.0
59.0
61.0
1.53
0.354
59.33
2.57
3.58 ft
CS
58.0
60.0
59.0
1.00
0.236
59.00
2.45
3.46 ft
CX
57.0
63.0
58.0
3.21
0.709
59.33
2.57
3.58 ft
D
57.0
55.0
55.0
1.15
0.236
55.67
1.30
2.31
DD
52.0
53.0
52.0
0.58
0.118
52.33
0.14
1.15
DE
50.0
50.0
50.0
0.00
0.000
50.00
-0.67
0.35
DG
54.0
54.0
54.0
0.00
0.000
54.00
0.72
1.73
DH
54.0
55.0
54.0
0.58
0.118
54.33
0.84
1.85
DJ







»
• =
0 3
No data submitted
Insufficient data
X 3
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
11 = Below control limit
-------
(f	
EMSL-LV Performance Evaluation: Gamma in Water,
4-Nov-1994
	
29/42
Cesium-137







>
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DL
50.0
53.0
50.0
1.73
0.354
51.00
-0.32
0.69

DM
61.0
60.0
60.0
0.58
0.118
60.33
2.91
3.93
It
DO
58.0
57.0
48.0
5.51
1.345
54.33
0.84
1.85

DT








•
DZ
47.0
45.0
46.0
1.00
0.236
46.00
-2.05
-1.04

E
53.0
58.0
52.0
3.21
0.709
54.33
0.84
1.85

EA








•
EB
57.0
57.0
57.0
0.00
0.000
57.00
1.76
2.77

EL
50.0
49.0
52.0
1.53
0.354
50.33
-0.55
0.46

EN
57.0
60.0
60.0
1.73
0.354
59.00
2.45
3.46
It
EW
49.0
47.0
49.0
1.15
0.236
48.33
-1.24
-0.23

EX
50.0
49:0
46.0
2.08
0.473
48.33
-1.24
-0.23

EZ
48.0
61.0
41.0
10.15
3.596
50.00
-0.67
0.35

FJ
57.0
50.0
52.0
3.61
0.827
53.00
0.37
1.39

FK









FL
416.0
422.0
405.0
8.62
2.921
414:33
125.54
126.56
X:
FU
52.0
49.0
52.0
1.73
0.354
51.00
-0.32
0.69

FZ
58.0
46.0
54.0
6.11
1.795
52.67
0.26
1.27

GE
50.0
53.0
50.0
1.73
0.354
51.00
-0.32
0.69

GI
51.0
51.0
52.0
0.58
0.118
51.33
-0.20
0.81

GL
48.0
47.0
47.0
0.58
0.118
47.33
-1.59
-0.58

GQ
50.0
50.0
50.0
0.00
0.000
50.00
-0.67
0.35

m








•
HJ
49.0
49.0
51.0
1.15
0.236
49.67
-0.78
0.23

HK
54.0
53.0
54.0
0.58
0.118
53.67
0.60
1.62

HL
54.0
54.0
54.0
0.00
0.000
54.00
0.72
1.73

HP
459.0
485.0
472.0
13.00
4.946
472.00
146.52
146.53
X
HX








•
I
53.0
56.0
52.0
2.08
0.473
53.67
0.60
1.62

IC
55.0
56.0
60.0
2.65
0.591
57.00
1.76
2.77

J
53.0
52.0
52.0
0.58
0.118
52.33
0.14
1.15

JE
51.0
54.0
53.0
1.53
0.354
52.67
0.26
1.27

JG
48.0
49.0
48.0
0.58
0.118
48.33
-1.24
-0.23

JI
50.0
48.0
49.0
1.00
0.236
49.00
-1.01
0.00

JR








•
JS
50.0
53.0
53.0
1.73
0.354
52.00
0.03
1.04

JY
45.0
53.0
67.0
11.14
4.046
55.00
1.07
2.08

K
49.0
50.0
45.0
2.65
0.591
48.00
-1.36
-0.35

KH
71.0
73.0
70.0
1.53
0.364
71.33
6.72
7.74
X"
KL
21.0
22.0
23.0
1.00
0.236
2200
10,36
9.35
X
KX
52.0
52.0
50.0
1.15
0.236
51.33
¦0.20
0.81

L
47.0
47.0
49.0
1.15
0.236
47.67
¦1.47
-0.46


64.0
88.0
65.0
2.08
0.473
66.67
476
6i77
x1
LF
52.0
50.0
52.0
1.15
0.236
51.33
-0.20
0.81

LR
52.0
52.0
53.0
0.58
0.118
52.33
0.14
1.15

• =
No data submitted

TAG SYMBOLS

It 3 Above control limit
l0-
Insufficient data
X 3
Determined to be an outlier
= Below control limit
	0
-------
r, =
30 / 42 EMSL-LV Performance Evaluation: Gamma in Water,
\
4-Nov-1994

	^
Cesium-137








Lab
Res. 1
Res. 2

Exper.
Rug anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LT
52.0
52.0
52.0
0.00
0.000
52.00
0.03
1.04

M
50.0
49.0
51.0
1.00
0.236
50.00
-0.67
0.35

MA
49.0
55.0
52.0
3.00
0.709
52.00
0.03
1.04

ML








e
MP
53.0
51.0
58.0
3.61
0.827
54.00
0.72
1.73

MQ
57.0
53.0
50.0
3.51
0.827
53.33
0.49
1.50

MT








•'
MV
63.0
62.0
58.0
2.65
0.591
61.00
3.15
4.16
It
MY
57.0
55.0
57.0
1.15
0.236
56.33
1.53
2.54

N
54.0
51.0
51.0
1.73
0.354
52.00
0.03
1.04

NB








•
NH
55.0
54.0
54.0
0.58
0.118
54.33
0.84
1.85

" NI








•
NJ
54.0
58.0
52.0
3.06
0.709
54.67
0.95
1.96

NK
47.0
51.0
49.0
2.00
0.473
49.00
-1.01
0.00

NP
49.0
48.0
52.0
2.08
0.473
49.67
-0.78
0.23

NZ
45.0
50.0
48.0
2.52
0.591
47.67
-1.47
-0.46

O
55.0
54.0
54.0
0.58
0.118
54.33
0.84
1.85

OA








fl
OB
45.0
45.0
45.0
0.00
0.000
45.00
-2.40
-1.39

OK
34.0
350
37.0
1.53
0.354
35.33
-5.75
-4.73
X
OL









OM
45.0
45.0
48.0
1.73
0.354
46.00
-2.05
-1.04

PB
50.0
49.0
50.0
0.58
0.118
49.67
-0.78
0.23

PE
54.0
56.0
54.0
1.15
0.236
54.67
0.95
1.96

PI
52.0
45.0
50.0
3.61
0.827
49.00
-1.01
0.00

PM
52.0
53.0
50.0
1.53
0.354
51.67
-0.09
0.92

PQ









PU
61.0
58.0
55.0
3.00
0.709
58.00
2.11
3.12
It
PV
48.0
50.0
52.0
2.00
0.473
50.00
-0.67
0.35

PW
57.0
55.0
51.0
3.06
0.709
54.33
0.84
1.85

Q
50.0
55.0
48.0
3.61
0.827
51.00
-0.32
0.69

QJ
52.0
54.0
57.0
2.52
0.591
54.33
0.84
1.85

QP
55.0
48.0
55.0
4.04
0.827
52.67
0.26
1.27

QT
53.0
53.0
53.0
0.00
0.000
53.00
0.37
1.39

QU








•
QW








%
QX
56.0
56.0
60.0
2.31
0.473
57.33
1.88
2.89

QZ
47.0
45.0
47.0
1.15
0.236
46.33
-1.94
-0.92

R
54.0
53.0
54.0
0.58
0.118
53.67
0.60
1.62

RC








•
RF
47.0
47.0
49.0
1.15
0.236
47.67
-1.47
-0.46

RH
49.0
48.0
47.0
1.00
0.236
48.00
-1.36
-0.35

RK








4
RL
61.0
61.0
61.0
0.00
0.000
61.00
3.15
4.16
It
• =
No data submitted

TAG SYMBOLS

1T s Above control limit
in
Q
Insufficient data
x =
Determined to be an outlier
s Below control limit
'J
-------
EMSL-LV Performance
Evaluation: Gamma
in Water,
4-Nov-1994 31 / 42
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
RM
45.0
46.0
46.0
0.58
0.118
45.67
-2.17
-1.15

RO
55.0
53.0
53.0
1.15
0.236
53.67
0.60
1.62

RR
51.0
48.0
48.0
1.73
0.354
49.00
-1.01
0.00

RU
51.0
51.0
50.0
0.58
0.118
50.67
-0.43
0.58

RV
53.0
49.0
44.0
4.51
1.120
48.67
-1.13
-0.12

RX
47.0
45.0
48.0
1.53
0.354
46.67
-1.82
-0.81

RZ
49.0
48.0
50.0
1.00
0.236
49.00
-1.01
0.00

S
51.0
52.0
51.0
0.58
0.118
51.33
-0.20
0.81

sc








•
SD
44.0
58.0
51.0
7.00
2.245
51.00
-0.32
0.69

SF
51.0
47.0
49.0
2.00
0.473
49.00
-1.01
0.00

81
27.0
27.0
23.0
2.31
0.473
26.61
-9.09
•8.08
X
SK







•
SM
43.0
51.0
49.0
4.16
0.945
47.67
-1.47
-0.46

SN
51.0
57.0
59.0
4.16
0.945
55.67
1.30
2.31

SR
48.0
47.0
50.0
1.53
0.354
48.33
-1.24
-0.23

ss
57.0
53.0
53.0
2.31
0.473
54.33
0.84
1.85

ST
50.0
51.0
52.0
1.00
0.236
51.00
-0.32
0.69

sv
40.0
46.0
45.0
3.21
0.709
43.67
-2.86
-1.85

sw
54.0
48.0
47.0
3.79
0.827
49.67
-0.78
0.23

sx








•
sz
55.0
54.0
52.0
1.53
0.354
53.67
0.60
1.62

T
51.0
50.0
50.0
0.58
0.118
50.33
-0.55
0.46

TB
64.0
63.0
62.0
1.00
0.236
63.00
3.84
4.85
TT
TC








•
TD
56.0
51.0
54.0
2.52
0.591
53.67
0.60
1.62

TE
55.0
55.0
56.0
0.58
0.118
55.33
1.18
2.19

TH
50.0
54.0
52.0
2.00
0.473
52.00
0.03
1.04

TI
53.0
52.0
53.0
0.58
0.118
52.67
0.26
1.27

TL
52.0
49.0
44.0
4.04
0.945
48.33
-1.24
-0.23

TO
51.0
55.0
54.0
2.08
0.473
53.33
0.49
1.50

TQ
54.0
52.0
55.0
1.53
0.354
53.67
0.60
1.62

TR
60.0
57.0
51.0
4.58
1.120
56.00
1.41
2.42

TS
48.0
49.0
51.0
1.53
0.354
49.33
-0.90
0.12

U
50.0
52.0
50.0
1.15
0.236
50.67
-0.43
0.58

UE
50.0
52.0
51.0
1.00
0.236
51.00
-0.32
0.69

UM








• ¦
UN
55.0
55.0
56.0
0.58
0.118
55.33
1.18
2.19

UP
50.0
51.0
53.0
1.53
0.354
51.33
-0.20
0.81

UR
48.0
52.0
40.0
6.11
1.795
46.67
-1.82
-0.81

UT
37;0
38.0
38:0
0.58
0.118
37.67
-4.94
-3.93
X
UV








•
UW
52.0
53.0
53.0
0.58
0.118
52.67
0.26
1.27

UX
54.0
49.0
49.0
2.89
0.591
50.67
-0.43
0.58

UY
48.0
52.0
50.0
2.00
0.473
50.00
-0.67
0.35

• 3
0 3
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It a Above control limit
11 s Below control limit
if
-------
(?	
32/42
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
	^
Cesium-137







-
Lab
Res. 1



Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VA
49.0

45.0
48.0 2.08
0.473
47.33 -1.59 -0.58

VC
41.0

37.0
34.0 3.51
0.827
37.33 - -5.05 -4.04
X
VE
48.0

46.0
46.0 1.15
0.236
46.67 -1.82 -0.81

VG
50.0

52.0
51.0 1.00
0.236
51.00 -0.32 0.69

VH
51.0

49.0
51.0 1.15
0.236
50.33 -0.55 0.46

VI








•
VM
43.0

53.0
42.0 6.08
1.570
46.00 -2.05 -1.04

VN









vo
55.0

53.0
56.0 1.53
0.354
54.67 0.95 1.96

VQ








•
VR








•
vs
57.0

59.0
59.0 1.15
0.236
58.33 2.22 3.23
ft
VT
43.0

51.0
59.0 8.00
2.695
51.00 -0.32 0.69

VU
51.0

48.0
49.0 1.53
0.354
49.33 -0.90 0.12

vx








*
w
54.0

44.0
48.0 5.03
1.345
48.67 -1.13 -0.12

X
51.0

51.0
53.0 1.15
0.236
51.67 -0.09 0.92

z
54.0

55.0
54.0 0.58
0.118
54.33 0.84 1.85





Data sorted by Laboratory Averag
f©

Average

Taff

Lab
Average
Tag
Lab
Average Tag
Lab
22.00

X

KL
47.67

L
49.67
BA
24.00

X

CM
48.00

RH
50.00
UY
25.67

X

SI
48.00

K
50.00
PV
35.33

X

OK
48.00

C
. 50.00
M
37.33

X

VC
48.00

AZ
50.00
GQ
37.67

X

UT
48.33

TL
50.00
EZ
43.67



sv
48.33

SR
50.00
DE
44.00



cc
48.33

JG
50.33
VH
45.00



OB
48.33

EX
50.33
T
45.67



RM
48.33

EW
50.33
EL
46.00



VM
48.67

W
50.33
AY
46.00



OM
48.67

RV
50.33
AU
46.00



DZ
49.00

SF
50.67
UX
46.33



QZ
49.00

RZ
50.67
U
46.67



VE
49.00

RR
50.67
RU
46.67



UR
49.00

PI
50.67
CP
46.67



RX
49.00

NK
50.67
BC
46.67



CA
49.00

JI
51.00
VT
47.00



AN
49.33

VU
51.00
VG
47.33



VA
49.33

TS
51.00
UE
47.33



GL
49.67

SW
51.00
ST
47.67



SM
49.67

PB
51.00
SD
47.67



RF
49.67

NP
51.00
Q
47.67



NZ
49.67

HJ
51.00
GE
• s No data submitted

TAG SYMBOLS

IT = Above control limit
0 = Insufficient data
vj-	

x = Determined to be an outlier
II = Below control limit
	
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
33/42
Cesium-137
Data sorted by Laboratory Average
Average
Taj?
Lab
Average
Tag
Lab
Average
Tag
Lab
51.00

FU
53.00

QT
54.67

NJ
51.00

DL
53.00

FJ
54.67

BN
51.00

AJ
53.00

BK
55.00

JY
51.33

UP
53.33

TO
55.00

CO
51.33

S
53.33

MQ
55.33

UN
51.33

LF
53.33

BO
55.33

TE
51.33

KX
53.67

TQ
55.33

AW
51.33

GI
53.67

TD
55.67

SN
51.33

BL
53.67

SZ
55.67

D
51.33

AH
53.67

RO
56.00

TR
51.33

A
53.67

R
56.33

MY
51.67

X
53.67

I
56.33

AE
51.67

PM
53.67

HK
57.00

IC
51.67

BM
53.67

AI
57.00

EB
51.67

BH
54.00

MP
57.00

AK
52.00

TH
54.00

HL
57.33

QX
52.00

N
54.00

DG
58.00
ft
PU
52.00

MA
54.00

AL
58.33
ft
vs
52.00

LT
54.33

Z
59.00
ir
EN
52.00

JS
54.33

SS
59.00
IT
cs
52.00

BB
54.33

QJ
59.33
ft
cx
52.33

LR
54.33

PW
59.33
ft
CQ
52.33

J
54.33

O
60.33
ft
DM
52.33

DD
54.33

NH
60.67
ft
CK
52.67

UW
54.33

E
61.00
ft
RL
52.67

TI
54.33

DO
61.00
ft
MV
52.67

QP
54.33

DH
63.00
ft
TB
52.67

JE
54.33

CJ
65.67
X
LE
52.67

FZ
54.33

BW
71.33
X
KH
52.67

CE
54.67

VO
414.33
X
FL
52.67

AF
54.67

PE
472.00
X
HP
% responding labs Frequency distribution
104		
iifillifl-Hi--:; T. J
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
• a No data submitted	TAG SYMBOLS	IT s Above control limit
0 s Insufficient data	x = Determined to be an outlier	II = Below control limit
^	—'J
-------
o	=
34 / 42	EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Cesium-137
% responding labs	Frequency distribution
10-
i-lifilhfliilfT:

-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------

EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
35/42
Barium-133
Statistical Summary
198 Participants
The known value of this nuclide is 73.0 pCi/1 with an expected precision of 7.0; the control limits
sure 60.9 to 85.1; the warning regions are 60.9 to 64.9 and 81.1 to 85.1
34(17.2 %) Failed to respond »
. 131 (66.2 %) Within all limits

;\K
8(4.0 %) Outliers * /
		 ,

13(6.6 %) Out of control •

*** 12(6.1 %) tn warning zone
but not an outlier
I
I I
but within control
Statistic
Respondents
Non-outliers
Mean
78.10
Grand Avg 70.81
Std. Dev.
58.28
6.13
Variance
3396.75
37.64
% Coef. of Var.
74.62
8.66
% deviation of mean from known value
6.99
-2.99
Norm. dev. of mean from known value
0.09
-0.36
Median
71.00
70.67
% deviation of median from known value
-2.74
-3.20
Norm. dev. of median from known value
-0.03
-0.38
21(12.8 %) More than 3 norm. S.D
12(7.3 %) Between 2 and 3 norm. S.D.
• 85(51.8 %) Within 1 norm. S.D.
of known value
* 46(28.0 %) Between 1 and 2 norm. S.D.
-------
ft	








	
36/42 EMSL-LV Performance Evaluation: Gamma in Water,
4-Nov-1994


Barium-133








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
73.0
72.0
72.0
0.58
0.084
72.33
0.38
-0.16

AE
64.0
64.0
66.0
1.15
0.169
64.67
-1.52
-2.06

AF
72.0
71.0
72.0
0.58
0.084
71.67
0.21
-0.33

AH
69.0
65.0
65.0
2.31
0.338
66.33
-1.11
-1.65

AI
68.0
71.0
70.0
1.53
0.253
69.67
-0.28
-0.82

AJ
75.0
77.0
76.0
1.00
0.169
76.00
1.28
0.74

AK
74.0
76.0
75.0
1.00
0.169
75.00
1.04
0.49

AL
85.0
75.0
77.0
5.29
0.844
79.00
2.03
1.48

AN
67.0
68.0
64.0
2.08
0.338
66.33
-1.11
-1.65

AP








•
AU
72.0
71.0
70.0
1.00
0.169
71.00
0.05
-0.49

AW
77.0
78.0
73.0
2.65
0.422
76.00
1.28
0.74

AY
70.0
74.0
72.0
2.00
0.338
72.00
0.29
-0.25

AZ
67.0
66.0
73.0
3.79
0.591
68.67
-0.53
-1.07

BA
71.0
72.0
73.0
1.00
0.169
72.00
0.29
-0.25

BB
71.0
69.0
66.0
2.52
0.422
68.67
-0.53
-1.07

BC
66.0
66.0
66.0
0.00
0.000
66.00
-1.19
-1.73

BG
66.0
69.0
79.0
6.81
1.185
71.33
0.13
-0.41

BH
69.0
70.0
70.0
0.58
0.084
69.67
-0.28
-0.82

BI








• .
BK
71.0
71.0
66.0
2.89
0.422
69.33
-0.37
-0.91

BL
72.0
74.0
72.0
1.15
0.169
72.67
0.46
-0.08

BM
78.0
78.0
82.0
2.31
0.338
79.33
2.11
1.57

BN
70.0
68.0
71.0
1.53
0.253
69.67
-0.28
-0.82

BO
64.0
67.0
66.0
1.53
0.253
65.67
-1.27
-1.81

BW








• '
C
81.0
80.0
79.0
1.00
0.169
80.00
2.27
1.73

CA
68.0
68.0
67.0
0.58
0.084
67.67
-0.78
-1.32

CC
188.0
201.0
218.0
15.04
3.917
202.33
32.54
32.00
X
CE
90.0
87.0
87.0
1.73
0.253
88.00
4.25
3.71
It
CG








•
CJ
60.0
60.0
55.0
2.89
0.422
58.33
-3.09
-3.63
u
CK
79.0
77.0
70.0
4.73
0.759
75.33
1.12
0.58

CM
32.0
34.0
31.0
1.53
0.253
32.33
-9.52
-10.06
X
CO
77.0
76.0
68.0
4.93
0.759
73.67
0.71
0.16

CP
73.0
73.0
74.0
0.58
0.084
73.33
0.62
0.08

CQ
71.0
77.0
79.0
4.16
0.675
75.67
1.20
0.66

CS
71.0
74.0
76.0
2.52
0.422
73.67
0.71
0.16

CX
66.0
70.0
63.0
3.51
0.591
66.33
-1.11
-1.65

D
76.0
72.0
73.0
2.08
0.338
73.67
0.71
0.16

DD
78.0
71.0
74.0
3.51
0.591
74.33
0.87
0.33

DE
66.0
67.0
67.0
0.58
0.084
66.67
-1.03
-1.57

DG
70.0
70.0
70.0
0.00
0.000
70.00
-0.20
-0.74

DH
74.0
74.0
73.0
0.58
0.084
73.67
0.71
0.16

DJ








• *
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 =
^	
Insufficient data
x =
Determined to be an outlier
U = Below control limit
	¦O
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994	37 / 42
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
68.0
67.0
77.0
5.51
0.844
70.67
-0.04
-0.58
DM
94:0
964
101.0
3.61
0.591
97i00;
6.48
5.94 x
DO
68.0
75.0
77.0
4.73
0.759
73.33
0.62
0.08
DT
86.0
81.0
78.0
4.04
0.675
81.67
2.69
2.14
DZ
61.0
61.0
61.0
0.00
0.000
61.00
-2.43
-2.97
E
73.0
70.0
70.0
1.73
0.253
71.00
0.05
-0.49
EA








EB
74.0
76.0
74.0
1.15
0.169
74.67
0.95
0.41
EL
71.0
74.0
69.0
2.52
0.422
71.33
0.13
-0.41
EN
68.0
76.0
76.0
4.62
0.675
73.33
0.62
0.08
EW
70.0
72.0
68.0
2.00
0.338
70.00
-0.20
-0.74
EX
63.0
67.0
65.0
2.00
0.338
65.00
-1.44
-1.98
EZ
76.0
77.0
79.0
1.53
0.253
77.33
1.61
1.07
FJ
72.0
69.0
76.0
3.51
0.591
72.33
0.38
-0.16
FK








FL
596,0
6770
605.0
14.29
3.596
E>92:67i
12943
128.58 x
FU
66.0
69.0
66.0
1.73
0.253
67.00
-0.94
-1.48
FZ
77.0
84.0
76.0
4.36
0.675
79.00
2.03
1.48
GE
77.0
67.0
68.0
5.51
0.844
70.67
-0.04
-0.58
GI
72.0
70.0
72.0
1.15
0.169
71.33
0.13
-0.41
GL
66.0
63.0
67.0
2.08
0.338
65.33
-1.36
-1.90
GQ
70.0
70.0
70.0
0.00
0.000
70.00
-0.20
-0.74
m







•
HJ
79.0
73.0
78.0
3.21
0.506
76.67
1.45
0.91
HK
68.0
68.0
67.0
0.58
0.084
67.67
-0.78
-1.32
HL
69.0
69.0
69.0
0.00
0.000
69.00
-0.45
-0.99
HP
539.0
622.0
580.0
41.50
12.435
580.33
126.07
125.53 x
HX







. •
I
68.0
73.0
71.0
2.52
0.422
70.67
-0.04
-0.58
IC
72.0
75.0
76.0
2.08
0.338
74.33
0.87
0.33
J
72.0
69.0
70.0
1.53
0.253
70.33
-0.12
-0.66
JE
68.0
70.0
71.0
1.53
0.253
69.67
-0.28
-0.82
JG
60.0
59.0
64.0
2.65
0.422
61.00
-2.43
-2.97
JI
63.0
69.0
68.0
3.21
0.506
66.67
-1.03
-1.57
JR







• "
JS
66.0
63.0
65.0
1.53
0.253
64.67
-1.52
-2.06
JY
92.0
68.0
80.0
12.00
2.953
80.00
2.27
1.73
K
59.0
59.0
60.0
0.58
0.084
59.33
-2.84
-3.38 U
KH
85.0
84.0
92.0
4.36
0.675
87.00
4.00
3.46 ft
KL
52.0
52.0
50.0
1.15
0.169
51.33
-4.82
-5.36 U-
KX
82.0
77.0
68.0
7.09
1.345
75.67
1.20
0.66
L
65.0
69.0
67.0
2.00
0.338
67.00
-0.94
-1.48
LE
91.0
79.0
82.0
6.24
1.024
84.00
3.26
2.72
LF
73.0
69.0
75.0
3.06
0.506
72.33
0.38
-0.16
LR
85.0
71.0
72.0
7.81
1.345
76.00
1.28
0.74
• =
0 a
No data submitted
Insufficient data
i.'Xr.£
TAG SYMBOLS
: Determined to be an outlier
ft s Above control limit
¦H = Below control limit
-------
A			
38 / 42 EMSL-LV Performance Evaluation: Gamma in Water,
4-Nov-1994


Barium-133







"s
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LT
71.0
72.0
71.0
0.58
0.084
71.33
0.13
-0.41

M
69.0
70.0
71.0
1.00
0.169
70.00
-0.20
-0.74

MA
72.0
71.0
70.0
1.00
0.169
71.00
0.05
-0.49

ML








•
MP
73.0
74.0
72.0
1.00
0.169
73.00
0.54
0.00

MQ
70.0
67.0
67.0
1.73
0.253
68.00
-0.70
-1.24

MT








•
MV
78.0
81.0
84.0
3.00
0.506
81.00
2.52
1.98

MY
70.0
71.0
70.0
0.58
0.084
70.33
-0.12
-0.66

N
73.0
74.0
71.0
1.53
0.253
72.67
0.46
-0.08

NB








•
NH
72.0
72.0
70.0
1.15
0.169
71.33
0.13
-0.41

NI








•
NJ
70.0
76.0
72.0
3.06
0.506
72.67
0.46
-0.08

NK
68.0
75.0
66.0
4.73
0.759
69.67
-0.28
-0.82

NP
56.0
64.0
66.0
5.29
0.844
62.00
-2.18
-2.72

NZ
63.0
76.0
66.0
6.81
1.185
68.33
-0.61
-1.15

O
71.0
71.0
71.0
0.00
0.000
71.00
0.05
-0.49

OA








•
OB








•
OK
88.0
91.0
85.0
3.00
0.506
88,00
4.25
3.71
1t
OL









OM
74.0
74.0
76.0
1.15
0.169
74.67
0.95
0.41

PB
90.0
89.0
88.0
1.00
0.169
89.00
4.50
3.96
It
PE
66.0
68.0
71.0
2.52
0.422
68.33
-0.61
-1.15

PI
65.0
66.0
65.0
0.58
0.084
65.33
-1.36
-1.90

PM
66.0
67.0
72.0
3.21
0.506
68.33
-0.61
-1.15

PQ








9
PU








• '
PV
67.0
71.0
75.0
4.00
0.675
71.00
0.05
-0.49

PW
64.0
64.0
67.0
1.73
0.253
65.00
-1.44
-1.98

Q
68.0
71.0
69.0
1.53
0.253
69.33
-0.37
-0.91

QJ
72.0
69.0
69.0
1.73
0.253
70.00
-0.20
-0.74

QP
76.0
68.0
75.0
4.36
0.675
73.00
0.54
0.00

QT
73.0
75.0
73.0
1.15
0.169
73.67
0.71
0.16

QU








•
QW








•
QX
73.0
73.0
72.0
0.58
0.084
72.67
0.46
-0.08

QZ
61.0
64.0
63.0
1.53
0.253
62.67
-2.02
-2.56

R
64.0
66.0
68.0
2.00
0.338
66.00
-1.19
-1.73

RC








•-
RF
65.0
65.0
68.0
1.73
0.253
66.00
-1.19
-1.73

RH
65.0
66.0
67.0
1.00
0.169
66.00
-1.19
-1.73

RK








' *
RL
57.0
57.0
57.0
0.00
0.000
57.00
-3.42
-3.96

• =
No data submitted

TAG SYMBOLS

IT s Above control limit
La-
Insufficient data
x s
Determined to be an outlier
11 = Below control limit
-------
r,	








	

EMSL-LV Performance Evaluation: Gamma in Water,
4-Nov-1994
39/42
Barium-133








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RM
67.0
68.0
72.0
2.65
0.422
69.00
-0.45
-0.99

RO
68.0
64.0
66.0
2.00
0.338
66.00
-1.19
-1.73

RR
68.0
69.0
77.0
4.93
0.759
71.33
0.13
-0.41

RU
73.0
75.0
74.0
1.00
0.169
74.00
0.79
0.25

RV
62.0
60.0
57.0
2.52
0.422
59.67
-2.76
-3.30

RX
73.0
75.0
74.0
1.00
0.169
74.00
0.79
0.25

RZ
70.0
66.0
70.0
2.31
0.338
68.67
-0.53
-1.07

S
79.0
72.0
75.0
3.51
0.591
75.33
1.12
0.58

sc








•'
SD
72.0
71.0
64.0
4.36
0.675
69.00
-0.45
-0.99

SF
58.0
57.0
55.0
1.53
0.253
56.67
-3.50
-4.04

SI
30;0~
32.0
33.0
1.53
0,253
31137
•9.69
-10.23
X
SK







-•
SM
67.0
64.0
66.0
1.53
0.253
65.67
-1.27
-1.81

SN
69.0
74.0
73.0
2.65
0.422
72.00
0.29
-0.25

SR
66.0
65.0
67.0
1.00
0.169
66.00
-1.19
-1.73

ss
80.0
76.0
78.0
2.00
0.338
78.00
1.78
1.24

ST
68.0
69.0
70.0
1.00
0.169
69.00
-0.45
-0.99

sv
71.0
67.0
64.0
3.51
0.591
67.33
-0.86
-1.40

sw
85.0
73.0
73.0
6.93
1.024
77.00
1.53
0.99

sx








•
sz
76.0
76.0
75.0
0.58
0.084
75.67
1.20
0.66

T
68.0
74.0
70.0
3.06
0.506
70.67
-0.04
-0.58

TB
88.0
88.0
87.0
0.58
0.084
87.67
4.17
3.63
IT
TC








•
TD
69.0
72.0
72.0
1.73
0.253
71.00
0.05
-0.49

TE
62.0
62.0
64.0
1.15
0.169
62.67
-2.02
-2.56

TH
76.0
83.0
80.0
3.51
0.591
79.67
2.19
1.65

TI
67.0
65.0
68.0
1.53
0.253
66.67
-1.03
-1.57

TL
69.0
68.0
71.0
1.53
0.253
69.33
-0.37
-0.91

TO
60.0
63.0
59.0
2.08
0.338
60.67
-2.51
-3.05

TQ
76.0
76.0
80.0
2.31
0.338
77.33
1.61
1.07

TR
64.0
76.0
60.0
8.33
1.667
66.67
-1.03
-1.57

TS
66.0
69.0
68.0
1.53
0.253
67.67
-0.78
-1.32

U
73.0
72.0
74.0
1.00
0.169
73.00
0.54
0.00

UE
69.0
70.0
73.0
2.08
0.338
70.67
-0.04
-0.58

UM








•
UN
69.0
70.0
69.0
0.58
0.084
69.33
-0.37
-0.91

UP
80.0
82.0
83.0
1.53
0.253
81.67
2.69
2.14

UR
98.0
117.0
101.0
10,21
2.149
105.33
8.54
8,00.
X
UT
66.0
56.0
56.0
5.77
0.844
59.33
-2.84
-3.38

UV








•
UW
71.0
71.0
74.0
1.73
0.253
72.00
0.29
-0.25

UX
71.0
58.0
67.0
6.66
1.185
65.33
-1.36
-1.90

UY
71.0
76.0
67.0
4.51
0.759
71.33
0.13
-0.41

• 3
No data submitted

TAG SYMBOLS

ft a Above control limit
b>-
Insufficient data
x =
Determined to be an outlier
U a Below control limit
					
-------
ft =
40/42
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
	
Barium-133









Lab
Res. 1

Res. 2


Exper.
Rng anal

Normalized deviation


Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VA
134.0

116.0
110.0 12.49
2.953
120.00 12.17 11.63
X
VC
81.0

71.0

76.0 5.00
0.844
76.00 1.28 0.74

VE
73.0

71.0

74.0 1.53
0.253
72.67 0.46 -0.08

VG
67.0

68.0

69.0 1.00
0.169
68.00 -0.70 -1.24

VH
62.0

63.0

61.0 1.00
0.169
62.00 -2.18 -2.72

VI









• .
VM
60.0

63.0

66.0 3.00
0.506
63.00 -1.93 -2.47

VN










vo
74.0

76.0

74.0 1.15
0.169
74.67 0.95 0.41

VQ









•
VR









•
. V8
76.0

75.0

73.0 1.53
0.253
74.67 0.95 0.41

VT
58.0

66.0

74.0 8.00
1.667
66.00 -1.19 -1.73

VU
76.0

72.0

71.0 2.65
0.422
73.00 0.54 0.00

VX









•
W
72.0

69.0

70.0 1.53
0.253
70.33 -0.12 -0.66

X
67.0

63.0

65.0 2.00
0.338
65.00 -1.44 -1.98

z
75.0

74.0

75.0 0.58
0.084
74.67 0.95 0.41





Data sorted by Laboratory Averaj


Average

TaK

Lab

Average
Tag
Lab
Average Tag
Lab
31.67

X

SI

65.33

GL
68.00
MQ
32.33

X

CM

65.67

SM
68.33
PM
51.33

U

KL

65.67

BO
68.33
PE
56.67

U

SF

66.00

VT
68.33
NZ
57.00

U

RL

66.00

SR
68.67
RZ
58.33

U

CJ

66.00

RO
68.67
BB
59.33

4

UT

66.00

RH
68.67
AZ
59.33



K

66.00

RF
69.00
ST
59.67

w.

RV

66.00

R
69.00
SD
60.67



TO

66.00

BC
69.00
RM
61.00



JG

66.33

CX
69.00
HL
61.00



DZ

66.33

AN
69.33
UN
62.00



VH

66.33

AH
69.33
TL
62.00



NP

66.67

TR
69.33
Q
62.67



TE

66.67

TT
69.33
BK
62.67



QZ

66.67

JI
69.67
NK
63.00



VM

66.67

DE
69.67
JE
64.67



JS

67.00

L
69.67
BN
64.67



AE

67.00

FU
69.67
BH
65.00



X

67.33

SV
69.67
AI
65.00



PW

67.67

TS
70.00
QJ
65.00



EX

67.67

HK
70.00
M
65.33



UX

67.67

CA
70.00
GQ
65.33



PI

68.00

VG
70.00
EW
• = No data submitted


TAG SYMBOLS

IT s Above control limit
0 = Insufficient data
^	


x = Determined to be an outlier
JJ = Below control limit
	yj
-------
EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
41/42
Barium* 133
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
70.00

DG
72.67

VE
75.67

CQ
70.33

W
72.67

QX
76.00

VC
70.33

MY
72.67

NJ
76.00

LR
70.33

J
72.67

N
76.00

AW
70.67

UE
72.67

BL
76.00

AJ
70.67

T
73.00

VU
76.67

HJ
70.67

I
73.00

U
77.00

SW
70.67

GE
73.00

QP
77.33

TQ
70.67

DL
73.00

MP
77.33

EZ
71.00

TD
73.33

EN
78.00

SS
71.00

PV
73.33

DO
79.00

FZ
71.00

O
73.33

CP
79.00

AL
71.00

MA
73.67

QT
79.33

BM
71.00

E
73.67

DH
79.67

TH
71.00

AU
73.67

D
80.00

JY
71.33

UY
73.67

CS
80.00

C
71.33

RR
73.67

CO
81.00

MV
71.33

NH
74.00

RX
81.67

UP
71.33

LT
74.00

RU
81.67

DT
71.33

GI
74.33

IC
84.00

LE
71.33

EL
74.33

DD
87.00
It
KH
71.33

BG
74.67

Z
87.67
It
TB
71.67

AF
74.67

VS
88.00
tr
OK
72.00

UW
74.67

vo
88.00
it
CE
72.00

SN
74.67

OM
89.00
tr
PB
72.00

BA
74.67

EB
97.00
X
DM
72.00

AY
75.00

AK
105.33
X
UR
72.33

LF
75.33

S
120.00
X
VA
72.33

FJ
75.33

CK
202.33
X
CC
72.33

A
75.67

SZ
580.33
X
HP



75.67

KX
592.67
X
FL
% responding labs
Frequency distribution
10-
0-us-r-
-6

— fllll|lltl|»ll»T T
+2
Normalized deviation of the mean from the known value
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft a Above control limit
-II s Below control limit
-------
42 / 42	EMSL-LV Performance Evaluation: Gamma in Water, 4-Nov-1994
Barium-133
% responding labs	Frequency distribution
10-f "^-'-¦J-L-UUUUU1IUJUUJJUUUJ1JJJ-J-U-UJJ---IUUJUUJUU-1JL
rn—T	¦
-2	0	+2
o-^h	T-	1-— 		
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------