United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-99/071
August 1999
Results from EPA's Drinking
Water Radiochemistry
Performance Evaluation
Studies for Calendar Year 1993
5S14GR92NHD.COV-27
-------
Ovlbl/,
/*rc«'v/£-
TECHNICAL REPORT DATA
1. Report No.
EPA/600/R-99/071
2
3. Recipient's Accession No.
4. Title and Subtitle
Results from EPA's Drinking Water Radiochemistry Performance Evaluation Studies for
Calendar Year ,993 RfilMSitnn/ Material
5. Report Pate
01/01/93-12/31/93
6. Performing Organization Code
™a.s.H. Permanent Collection
8. Performing Organization Report
No. (TIP#)
NERL-LV 99-098
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 1993
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
I icauCWa! lei s cii id Chemical Libraries
17' Key Words and Document AnaJ^ u,._+ Dl^ „
a. Descriptors:
PE Studies, PE, radiochemistry, gross alpha, gross
beta, strontium, tritium, plutonium, uranium, radium,
gamma, mixed gamma, blind, iodine, air filter,
radioactivity
u-i ; « i IL
b IdenWers/Open-endedT^Qjl^g ^
1301 Constitution
Washington DC
202-566-05
Ul 11 vJvJ'-t-U
j4f°SATI
Ave NW
20004
>6
18 Distribution Statement
RELEASE TO THE PUBLIC
19 Security Class (This Report)
UNCLASSIFIED
21 No. of Pages
408
20 Security Class (This Page)
UNCLASSIFIED
22 Price
EPA 2220-1
-------
nuu-uo-xm) xh-jd
UStrH
513 Sby Vb-bb P.01/06
7. EPA Report No.
EPA/600/R-99/ 07/
2. Product Coda
R
3. lab/Draft No.
NERL-LV 99-098
4. Copyright Permission
~ Yas (Attached)
X Not Applicebto
Results from EPA'a Drinking Water RadiochemistfY Performance Evaluation Stud.es for Calendar Year 1993
V Author!*) 'm order of authoMhip. Affiliation, and Addresi (Identify EPA authors with lab/Centeri
Pte. S. H.
U.S. CPA
National Exposure Research Laboratory
Environmental Sciences Division, Environmental Chemistry Branch
PO Box 93478
Lst Vegas, NV 88193-3478
S: .
7. internet Address (Indicate whether >t & your preferred or active UftU. Attach diskette containing the abstract in WordPerfect.
1 N/A 1
8. OMIS Tetk No.. GPRA ID (eg. 000101), APQ, and APN1
Project * J0477
9. Project Officer Name. Telephone No. and Contmct/IAQ, CAG i
S. Pia- 702/798-2102
10. Coramct/lAQ/Ascistance Agreement No.
N/A
11. Product Typa
~ Pear Reviewed Journal Article (See block 12)
X Published Report
~ Summary
~ Symposium Paper (Sea block 12}
~ Book Chapter (See block 12)
0 Exhibit/Poster
~ EPA-Sponsored Conferancfi/Seimnar/Workshop
~ Research Brief or Issue Paper
~ Newel attar
D Internal Report (distribution limited to EPA)
~ Unpublished Report
0 Computer Produm. Scientific Data
O Other
(Identify product type. Use block 12 if needed)
S)
12. Bibliographic Citation (Per symposia papas and abstracts, give
name, place and date, for refereed publications, 9<}
Steepen Pie, Originator Date Christian, G, Deughton, Supervisor Data
15. Comments or Keywords
JFnaiHAi. FORM la (T.«)
=AX transmittal
£
,,AAc/e
ftrifaa
SM8-101
"Vz/nw- 22^?
OEH^Ul SERVICES AOMINim&iTlCJN
16a. Product's Peer Review Category
(fieferead papers are usually Category 3: abstracts, EPA reports
and non-rsfereed products are usually Category 4.)
D 1. Major sei. & tech. work product lAA signs in 101
0 2. Important sci. & tech. work product ILD signs in 18)
~ 3. General sci. & tech. worK product (BC sigrtc 14, DO oignc 10)
X 4. otSe/ science 1 toch. work product {BC signs 14 and 1S)
16b.
. _ _ . Contact for peer review commwitj (Signature and
-------
United States
Environmental Protection
Agency
Research and Development
Environmental Monitoring
Systems Laboratory
P.O. Box 93478
Las Vegas NV 89193-3478
EPA/600/R-93/127
July 1993
Tritium in Water
Intercomparison Study:
A Statistical Evaluation of
the June 4,1993 Data
Library Use Only
PROPERTY of
U.S. EPA Library
las Vegas, NV 89119
-------
Tritium in Water
Intercomparison Study
June 4, 1993
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)
Intercomparison Study for Tritium in Water; June 4, 1993.
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
Intercomparison Program, and can be found in the Environmental Radioactivity
Laboratory Intercomparison 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 Frank Novielli at 702/798-2159 or Patricia Honsa at 702/798-2141.
Sincerely,
Frank Novielli
Senior 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: Tritium in Water, 4-Jun-1993
—Y>
1/10
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 columna 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 Lntercomparison Study: Tritium in Water, 4-Jun-1993
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 calcxilated 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 Laboratory lntercomparison Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Frank Novielli, EMSL-LV, 702/798-2159.
-------
EMSL-LV Intercomparison Study: Tritium in Water, 4-Jun-1993
3/10
Tritium
Statistical Summary
210 Participants
The known value of this nuclide is 9844.0 pCi/1 with an expected precision of 984.0; the control limits
are 8136.8 to 11551.2; the warning regions are 8136.8 to 8704.9 and 10983.1 to 11551.2
41(19.5 %) Failed to respond
6(2.9 %) Outliers •
142(67.6 %) Within all limits
2( 1.0 %) Out of control'
*"• 19(9.0 %) In warning zone
but not an outlier
r
I I l
but within control
Statistic
Respondents
Non-outliers
Mean
9434.52
Grand Avg 9591.82
Std. Dev.
1299.62
689.10
Variance
1689014.67
474852.55
% Coef. of Var.
13.78
7.18
% deviation of mean from known value
-4.16
-2.56
Norm. dev. of mean from known value
-0.32
-0.37
Median
9546.00
9580.00
% deviation of median from known value
-3.03
-2.68
Norm. dev. of median from known value
-0.23
-0.38
8(4.7 %) More than 3 norm. S.D.
19(11.2 %) Between 2 and 3 norm. S.D
5(50.3 %) Within 1 norm. S.D.
of known value
57(33.7 %) Between 1 and 2 norm. S.D.
-------
fr
4/10
EMSL-LV Intercomparison Study: Tritium in Water,
4-Jun-1993
Tritium
\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
9356.0
9235.0
9230.0
71.36
0.076
9273.67
-0.56
-1.00
AB
10483.0
10416.0
10388.0
48.85
0.057
10429.00
1.47
1.03
AE
9200.0
9218.0
9140.0
40.82
0.047
9186.00
-0.71
-1.16
AF
9007.0
9139.0
9390.0
194.56
0.230
9178.67
-0.73
-1.17
AH
10824.0
10826.0
10994.0
97.56
0.102
10881.33
2.27
1.83
AI
9590.0
9670.0
9480.0
95.37
0.114
9580.00
-0.02
-0.46
AJ
•
AK
9664.0
9643.0
9284.0
213.58
0.228
9530.33
-0.11
-0.55
AP
9721.0
9201.0
9052.0
351.23
0.402
9324.67
-0.47
-0.91
AU
9800.0
9600.0
9900.0
152.78
0.180
9766.67
0.31
-0.14
AW
9612.0
9608.0
9694.0
48.60
0.052
9638.00
0.08
-0.36
AY
9234.0
9202.0
9282.0
40.29
0.048
9239.33
-0.62
-1.06
AZ
8467.0
8010.0
8747.0
372.02
0.442
8408.00
-2.08
-2.53
BA
9400.0
9400.0
9365.0
20.29
0.021
9388.33
-0.36
-0.80
BB
9349.0
9548.0
9463.0
99.87
0.119
9453.33
-0.24
-0.69
BC
10960.0
10520.0
10480.0
266.33
0.288
10653.33
1.87
1.42
BG
ni
10300.0
11000.0
11000.0
404.16
0.420
10766.67
2.07
1.62
JOm
BL
9157.0
9062.0
8990.0
83.76
0.100
9069.67
-0.92
-1.36
BM
10900.0
10700.0
10700.0
115.50
0.120
10766.67
2.07
1.62
BO
9200.0
9300.0
9200.0
57.74
0.060
9233.33
-0.63
-1.07
BW
8500.0
8300.0
8800.0
251.66
0.300
8533.33
-1.86
-2.31
C
11261.0
11121.0
11644.0
270.75
0.314
11342.00
3.08
2.64
CA
9600.0
9600.0
9640.0
23.09
0.024
9613.33
0.04
-0.41
CC
•
CE
9930.0
10130.0
10030.0
99.97
0.120
10030.00
0.77
0.33
CO
•
CJ
9400.0
9500.0
9200.0
152.75
0.180
9366.67
-0.40
-0.84
CK
8800.0
9300.0
9300.0
288.68
0.300
9133.33
-0.81
-1.25
CM
9800.0
9913.0
10034.0
117.05
0.140
9915.67
0.57
0.13
CO
8670.0
9140.0
8900.0
235.01
0.282
8903.33
-1.21
-1.66
CP
9422.0
9113.0
9267.0
154.50
0.185
9267.33
-0.57
-1.02
CQ
9040.0
8960.0
9320.0
189.03
0.216
9106.67
-0.85
-1.30
CS
»
CX
9764.0
9955.0
9178.0
404.89
0.466
9632.33
0.07
-0.37
D
9198.0
9322.0
9379.0
92.54
0.109
9299.67
-0.51
-0.96
DD
9670.0
9800.0
9700.0
68.11
0.078
9723.33
0.23
-0.21
DE
9400.0
9416.0
9432.0
16.00
0.019
9416.00
-0.31
-0.75
DG
9710.0
10200.0
9240.0
480.03
0.576
9716.67
0.22
-0.22
DH
9425.0
9438.0
9601.0
98.06
0.106
9488.00
-0.18
-0.63
DI
9660.0
9590.0
9490.0
85.46
0.102
9580.00
-0.02
-0.46
DJ
8888.0
9232.0
9099.0
173.48
0.206
9073.00
-0.91
-1.36
DL
9800.0
9800.0
9800.0
0.00
0.000
9800.00
0.37
-0.08
DM
10300.0
10400.0
10660.0
185.83
0.216
10453.33
1.52
1.07
DR
•
• =
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 Intercomparison Study: Tritium in Water, 4-Jun-1993 5/10
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
DT
9400.0
9700.0
9300.0
208.17
0.240
9466.67
-0.22
-0.66
DY
•
E
9648.0
9492.0
9746.0
128.12
0.152
9628.67
0.06
-0.38
EA
10300.0
10300.0
10300.0
2.83
0.000
10300.00
1.25
0.80
EB
8920.0
9010.0
9180.0
132.03
0.156
9036.67
-0.98
-1.42
EH
8490.0
9080.0
8460.0
349.62
0.372
8676.67
-1.61
-2.05
EL
10477.0
11105.0
10228.0
451.95
0.526
10603.33
1.78
1.34
EN
9050.0
9010.0
9900.0
502.70
0.534
9320.00
-0.48
-0.92
EW
8488.0
8288.0
8474.0
111.64
0.120
8416.67
-2.07
-2.51
EX
8377.0
8316.0
8440.0
62.00
0.074
8377.67
-2.14
-2.58
FA
•
FB
•
FE
9680.0
9680.0
9570.0
63.49
0.066
9643.33
0.09
-0.35
FK
10395.0
10602.0
10502.0
103.52
0.124
10499.67
1.60
1.15
FL
9049.0
9193.0
9268.0
111.29
0.131
9170.00
-0.74
-1.19
FU
9400.0
9470.0
9640.0
123.42
0.144
9503.33
-0.16
-0.60
FZ
12000.0
11000.0
11000.0
577.35
0.600
11333.33
3.07
2.62
GE
9800.0
9800.0
9800.0
0.00
0.000
9800.00
0.37
-0.08
GO
•
GQ
9200.0
9000.0
9100.0
100.00
0.120
9100.00
-0.87
-1.31
HI
9417.0
9418.0
9392.0
14.65
0.016
9409.00
-0.32
-0.77
HJ
9670.0
9390.0
9380.0
164.63
0.174
9480.00
-0.20
-0.64
HK
9959.0
9813.0
9878.0
73.10
0.088
9883.33
0.51
0.07
HP
10300.0
9940.0
10500.0
283.80
0.336
10246.67
1.15
0.71
HR
10292.0
10241.0
10329.0
44.17
0.053
10287.33
1.22
0.78
HU
10245.0
10213.0
10063.0
97.20
0.109
10173.67
1.02
0.58
I
TA
8796.0
8978.0
8814.0
100.31
0.109
8862.67
-1.28
-1.73
IC
n
9600.0
10170.0
10080.0
306.43
0.342
9950.00
0.63
•
0.19
AA
IU
10000.0
10378.0
9973.0
226.44
0.243
10117.00
0.92
•
0.48
J
9940.0
9684.0
10071.0
196.85
0.232
9898.33
0.54
0.10
JE
9943.0
10166.0
9671.0
247.90
0.297
9926.67
0.59
0.15
JQ
•
JI
9650.0
9900.0
9840.0
130.53
0.150
9796.67
0.36
-0.08
JK
10012.0
9567.0
10017.0
258.39
0.270
9865.33
0.48
0.04
JM
10687.0
10584.0
9502.0
656.45
0.711
10257.67
1.17
0.73
JP
9600.0
9678.0
9819.0
111.01
0.131
9699.00
0.19
-0.26
JR
8630.0
8530.0
8750.0
110.16
0.132
8636.67
-1.68
-2.13
JS
9800.0
10000.0
9700.0
152.78
0.180
9833.33
0.43
-0.02
JY
9750.0
9600.0
9040.0
374.21
0.426
9463.33
-0.23
-0.67
K
8447.0
8506.0
8447.0
34.02
0.035
8466.67
-1.98
-2.42
KH
9177.0
9156.0
9215.0
29.89
0.035
9182.67
-0.72
-1.16
KM
10208.0
9479.0
11991.0
1292.33
1.967
10559.33
1.70
1.26
KX
9560.0
9290.0
8930.0
316.08
0.378
9260.00
-0.58
-1.03
• =
0S
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
ft a Above control limit
U a Below control limit
-------
/f- :
6/10
\
EMSL-LV Lntercomparison Study: Tritium in Water,
4-Jun-1993
^
Tritium
\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
L
9784.0
9757.0
9795.0
19.73
0.023
9778.67
0.33
-0.12
LA
9
LE
9
LF
9700.0
10000.0
9900.0
152.75
0.180
9866.67
0.48
0.04
LM
•
LR
•
LS
•
LT
10046.0
10083.0
10222.0
92.84
0.106
10117.00
0.92
0.48
MA
8966.0
9314.0
9154.0
174.19
0.209
9144.67
-0.79
-1.23
ML
10400.0
9940.0
10500.0
298.66
0.336
10280.00
1.21
0.77
MN
9700.0
9300.0
9300.0
230.94
0.240
9433.33
-0.28
-0.72
MQ
9790.0
9530.0
9690.0
131.13
0.156
9670.00
0.14
-0.31
MS
6380.0
6470.0
6610.0
66.58
0.078
6453.33
-5.52
-5.97
X
MT
•
MV
9100.0
9035.0
8867.0
120.23
0.140
9000.67
-1.04
-1.48
N
9805.0
9681.0
9621.0
93.83
0.110
9702.33
0.19
-0.25
NB
9551.0
9377.0
9392.0
96.42
0.104
9440.00
-0.27
-0.71
NH
9372.0
9329.0
9298.0
37.13
0.044
9333.00
-0.46
-0.90
NI
*
NJ
11000.0
11000.0
12000.0
577.35
0.600
11333.33
3.07
2.62
NO
•
NP
8941.0
8726.0
9378.0
332.24
0.391
9015.00
-1.02
-1.46
O
9206.0
9300.0
9236.0
47.99
0.056
9247.33
-0.61
-1.05
OA
9830.0
9630.0
9730.0
99.97
0.120
9730.00
0.24
-0.20
OK
8759.0
8984.0
8676.0
159.36
0.185
8806.33
-1.38
-1.83
OL
8032.0
7739.0
8497.0
382.24
0.455
8089.33
-2.64
-3.09
II
OM
9
OT
8940.0
8560.0
9580.0
515.49
0.612
9026.67
-0.99
-1.44
OX
9400.0
9560.0
9430.0
85.04
0.096
9463.33
-0.23
-0.67
PB
9522.0
9798.0
9542.0
153.88
0.166
9620.67
0.05
-0.39
PC
10520.0
10300.0
10620.0
163.71
0.192
10480.00
1.56
1.12
PD
8303.0
8280.0
8334.0
27.05
0.032
8305.67
-2.26
-2.71
PI
9046.0
9227.0
9012.0
115.58
0.129
9095.00
-0.87
-1.32
PJ
9
PM
8949.0
9056.0
8622.0
226.11
0.261
8875.67
-1.26
-1.70
PP
9
PQ
9465.0
8809.0
8947.0
345.86
0.394
9073.67
-0.91
-1.36
PT
8694.0
8640.0
8667.0
27.03
0.032
8667.00
-1.63
-2.07
PU
•
PV
9526.0
9435.0
9415.0
59.17
0.067
9458.67
-0.23
-0.68
FY
9
Q
10702.0
10534.0
10394.0
154.19
0.185
10543.33
1.67
1.23
QA
12913.0
12237.0
12763.0
355.00
0.406
12637.67
5.36
4.92
X
QB
9800.0
9530.0
9800.0
155.88
0.162
9710.00
0.21
-0.24
QC
66j0
65.0
65.6
0.58
0.001
65.33
-16.77
-17.21
X
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
0 s
^
Insufficient data
x =
Determined to be an outlier
11 s Below control limit
'J
-------
"
EMSL-LV Intercomparison Study: Tritium in Water, 4-Jun-19fl3 7/10
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Avferage
Normalized deviation
(grand-avg) (known) Tag
QD
9167.0
8864.0
8960.0
154.85
0.182
8997.00
-1.05
-1.49
QI
9034.0
10230.0
9470.0
605.27
0.718
9578.00
-0.02
-0.47
QJ
9730.0
10300.0
9820.0
306.43
0.342
9950.00
0.63
0.19
QK
10629.0
11008.0
10939.0
201.88
0.228
10858.67
2.23
1.79
QL
10100.0
9900.0
10500.0
305.52
0.360
10166.67
1.01
0.57
QM
9156.0
9244.0
9269.0
59.38
0.068
9223.00
-0.65
-1.09
QP
11150.0
11320.0
11040.0
141.06
0.168
11170.00
2.78
2.33
QQ
8648.0
8632.0
8587.0
31.68
0.037
8622.33
-1.71
-2.15
QT
9974.0
10563.0
11317.0
673.18
0.806
10618.00
1.81
1.36
QU
10119.0
10226.0
10129.0
59.14
0.064
10158.00
1.00
0.55
QW
10237.0
10216.0
10022.0
118.51
0.129
10158.33
1.00
0.55
QX
10876.0
11060.0
10976.0
92.12
0.110
10970.67
2.43
1.98
QZ
9619.0
9502.0
9680.0
90.42
0.107
9600.33
0.01
-0.43
R
9816.0
9758.0
9696.0
59.99
0.072
9756.67
0.29
-0.15
RA
9850.0
9440.0
9620.0
205.52
0.246
9636.67
0.08
-0.36
RC
9520.0
9270.0
9420.0
125.82
0.150
9403.33
-0.33
-0.78
RF
8200.0
8381.0
8257.0
92.56
0.109
8279.33
-2.31
-2.75
RH
m
RL
6184.0
49470
4851.0
171.40
0.200
4994.00
-8.09
-8.64
X
RM
8743.0
8552.0
8797.0
128.74
0.147
8697.33
-1.57
-2.02
RN
9510.0
9340.0
9460.0
87.36
0.102
9436.67
-0.27
-0.72
RO
8999.0
9357.0
9237.0
182.21
0.215
9197.67
-0.69
-1.14
RQ
•
RR
9763.0
10059.0
9987.0
154.35
0.178
9936.33
0.61
0.16
RS
•
RV
7340.0
7759.0
7505.0
211.07
0.252
7534.67
-3.62
-4.06
RX
9328.0
9548.0
9371.0
116.62
0.132
9415.67
-0.31
-0.75
S
9440.0
9390.0
9480.0
45.07
0.054
9436.67
-0.27-
-0.72
SA
•
SC
10000.0
9800.0
9500.0
251.68
0.300
9766.67
0.31
-0.14
SD
10250.0
10660.0
10370.0
210.80
0.246
10426.67
1.47
1.03
SF
4765,0
47&I.U
468810
31.83
0.034
4734.67
*8.55
-8.99
SI
9290.0
9310.0
8790.0
294.62
0.312
9130.00
-0.81
-1.26
SK
•
SM
8649.0
8463.0
8182.0
235.10
0.280
8431.33
-2.04
-2.49
SN
9840.0
9890.0
9660.0
120.99
0.138
9796.67
0.36
-0.08
SQ
9066.0
9341.0
9026.0
171.49
0.189
9144.33
-0.79
-1.23
ss
9090.0
9337.0
9176.0
125.37
0.148
9201.00
-0.69
-1.13
ST
9500.0
9460.0
9490.0
20.77
0.024
9483.33
-0.19
-0.63
SU
8406.0
8256.0
8174.0
117.67
0.139
8278.67
-2.31
-2.76
sw
•
sz
9875.0
9720.0
9768.0
79.32
0.093
9787.67
0.34
-0.10
T
9750.0
9620.0
9590.0
85.07
0.096
9653.33
0.11
-0.34
TA
9580.0
8820.0
8820.0
438.79
0.456
9073.33
-0.91
-1.36
TD
9220.0
9270.0
11880.0
1521.53
2.137
10123.33
0.94
0.49
• =
0 a
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
II s Below control limit
^ ^ WUMU. JJ
-------
8/10
\
EMSL-LV Lntercomparison Study: Tritium in Water,
4-Jun-1993
r
Tritium
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TE
9842.0
9755.0
9706.0
68.88
0.082
9767.67
0.31
-0.13
TP
•
TG
8080.0
8360.0
8310.0
149.33
0.168
8250.00
-2.36
-2.81
TH
8700.0
9200.0
8800.0
264.58
0.300
8900.00
-1.22
-1.66
TT
10341.0
9800.0
10071.0
270.49
0.325
10070.67
0.84
0.40
TL
9050.0
9050.0
8930.0
69.30
0.072
9010.00
-1.02
-1.47
TO
10900.0
10800.0
10500.0
208.17
0.240
10733.33
2.01
1.57
TQ
9784.0
10773.0
11106.0
687.59
0.794
10554.33
1.69
1.25
TS
9052.0
8605.0
9126.0
281.88
0.313
8927.67
-1.17
-1.61
TU
8800.0
8600.0
9700.0
585.95
0.660
9033.33
-0.98
-1.43
TV
1441.0
2883.0
1922.0
734.19
0.866
2082.00
-13.22
-13.66
X
TX
10326.0
10337.0
10537.0
118.79
0.127
10400.00
1.42
0.98
U
9940.0
10160.0
9810.0
176.94
0.210
9970.00
0.67
0.22
UB
•
UC
•
UD
9730.0
9700.0
9790.0
45.87
0.054
9740.00
0.26
-0.18
UE
10388.0
10548.0
10785.0
199.74
0.238
10573.67
1.73
1.28
UF
•
UH
•
ui
•
UK
9990.0
10020.0
9950.0
35.18
0.042
9986.67
0.70
0.25
UL
10000.0
10205.0
10100.0
102.53
0.123
10101.67
0.90
0.45
UM
•
UN
8906.0
8936.0
9012.0
54.62
0.064
8951.33
-1.13
-1.57
uo
•
UP
9558.0
9603.0
9477.0
63.83
0.076
9546.00
-0.08
-0.52
w
Y
10655.0
10663.0
10431.0
131.72
0.139
10583.00
1.74
1.30
JL
Y
9997.0
10025.0
9595.0
240.60
0.258
9872.33
0.49
0.05
•
Z
9946.0
9632.0
9812.0
157.58
0.188
9796.67
0.36
-0.08
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
65.33
X
QC
8408.00
AZ
8875.67
PM
2082.00
X
TV
8416.67
EW
8900.00
TH
4734.67
X
SF
8431.33
SM
8903.33
CO
4994.00
X
RL
8466.67
K
8927.67
TS
6453.33
X
MS
8533.33
BW
8951.33
UN
7534.67
RV
8622.33
QQ
8997.00
QD
8089.33
u
OL
8636.67
JR
9000.67
MV
8250.00
TG
8667.00
PT
9010.00
TL
8278.67
SU
8676.67
EH
9015.00
NP
8279.33
RF
8697.33
RM
9026.67
OT
8305.67
PD
8806.33
OK
9033.33
TU
8377.67
EX
8862.67
1
9036.67
EB
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
U = Below control limit
-------
EMSL-LV Lntercomparison Study: Tritium in Water, 4-*Jun-1993 9/10
v
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9069.67
BL
9483.33
ST
9936.33
RR
9073.00
DJ
9488.00
DH
9950.00
QJ
9073.33
TA
9503.33
FU
9950.00
IC
9073.67
PQ
9530.33
AK
9970.00
U
9095.00
PI
9546.00
UP
9986.67
UK
9100.00
GQ
9578.00
QI
10030.00
CE
9106.67
CQ
9580.00
DI
10070.67
TI
9130.00
SI
9580.00
AI
10101.67
UL
9133.33
CK
9600.33
QZ
10117.00
LT
9144.33
SQ
9613.33
CA
10117.00
IU
9144.67
MA
9620.67
PB
10123.33
TD
9170.00
FL
9628.67
E
10158.00
QU
9178.67
AF
9632.33
CX
10158.33
QW
9182.67
KH
9636.67
RA
10166.67
QL
9186.00
AE
9638.00
AW
10173.67
HU
9197.67
RO
9643.33
FE
10246.67
HP
9201.00
SS
9653.33
T
10257.67
JM
9223.00
QM
9670.00
MQ
10280.00
ML
9233.33
BO
9699.00
JP
10287.33
HR
9239.33
AY
9702.33
N
10300.00
EA
9247.33
O
9710.00
QB
10400.00
TX
9260.00
KX
9716.67
DG
10426.67
SD
9267.33
CP
9723.33
DD
10429.00
AB
9273.67
A
9730.00
OA
10453.33
DM
9299.67
D
9740.00
UD
10480.00
PC
9320.00
EN
9756.67
R
10499.67
FK
9324.67
AP
9766.67
SC
10543.33
Q
9333.00
NH
9766.67
AU
10554.33
TQ
9366.67
CJ
9767.67
TE
10559.33
KM
9388.33
BA
9778.67
L
10573.67
UE
9403.33
RG
9787.67
SZ
10583.00
W
9409.00
HI
9796.67
Z
10603.33
EL
9415.67
RX
9796.67
SN
10618.00
QT
9416.00
DE
9796.67
JI
10653.33
BC
9433.33
MN
9800.00
GE
10733.33
TO
9436.67
S
9800.00
DL
10766.67
BM
9436.67
RN
9833.33
JS
10766.67
BG
9440.00
NB
9865.33
JK
10858.67
QK
9453.33
BB
9866.67
LF
10881.33
AH
9458.67
PV
9872.33
Y
10970.67
QX
9463.33
OX
9883.33
HK
11170.00
QP
9463.33
JY
9898.33
J
11333.33
NJ
9466.67
DT
9915.67
CM
11333.33
FZ
9480.00
HJ
9926.67
JE
11342.00
C
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT
a Above control limit
= Below control limit
-------
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
12637.67
X
QA
% responding labs Frequency distribution
10-— 5
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
lOf
0 +2
^ i — i i - i —I
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
• a No data submitted TAG SYMBOLS ft s Above control limit
0 = insufficient. rfnhA x = Determined to be an outlier ^ = Below control limit
-------
United States Environmental Monitoring EPA/600/R-93/148
Environmental Protection Systems Laboratory August 1993
Agency P.O. Box 93478
Las Vegas NV 89193-3478
Research and Development
Gamma in Water
Intercomparison Study
A Statistical Evaluation of
the June 11,1993 Data
-------
Gamma in Water
Intercomparison Study
June 11, 1993
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)
Intercomparison Study for Gamma in Water; June 11, 1993.
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
Intercomparison Program, and can be found in the Environmental Radioactivity
Laboratory Intercomparison 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 Frank Novielli at 702/798-2159 or Patricia Honsa at 702/798-2141.
Sincerely,
Senior 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 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.
-------
2/50 EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
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 Laboratory Intercomparison Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Frank Novielli, EMSL-LV, 702/798-2159.
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
3/50
Cobalt-60 Statistical Summary 218 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
40(18.3 %) Failed to respond
9(4.1 %) Outliers'
Statistic
. 163(74.8 %) Within all limits
Respondents
6(2.8 %) In warning zone
but within control
Non-outliers
Mean
16.07
Grand Avg 14.90
Std. Dev.
11.04
2.08
Variance
121.95
4.32
% Coef. of Var.
68.71
13.96
% deviation of mean from known value
7.15
-0.68
Norm. dev. of mean from known value
0.10
-0.05
Median
15.00
15.00
% deviation of median from known value
0.00
0.00
Norm. dev. of median from known value
0.00
0.00
9(5.1 %) More than 3 norm. S.D
6(3.4 %) Between 2 and 3 norm. S.D. •
. 156(87.6 %) Within 1 norm. S.D.
of known value
*• 7(3.9 %) Between 1 and 2 norm. S.D.
-------
p - ———
4/50 EMSL-LV Intercomparison Study: Gamma in Water, 11-Juii-1993
^
Cobalt-60
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
12.0
14.0
15.0
1.53
0.354
13.67
-0.43
-0.46
AA
15.0
14.0
14.0
0.58
0.118
14.33
-0.20
-0.23
AE
13.0
14.0
13.0
0.58
0.118
13.33
-0.54
-0.58
AF
16.0
15.0
15.0
0.58
0.118
15.33
0.15
0.12
AI
16.0
15.0
16.0
0.58
0.118
15.67
0.27
0.23
AJ
17.0
17.0
17.0
0.00
0.000
17.00
0.73
0.69
AK
16.0
17.0
15.0
1.00
0.236
16.00
0.38
0.35
AL
13.0
14.0
8.0
3.21
0.709
11.67
-1.12
-1.15
AN
18.0
14.0
18.0
2.31
0.473
16.67
0.61
0.58
AP
16.0
16.0
15.0
0.58
0.118
15.67
0.27
0.23
AU
14.0
14.0
13.0
0.58
0.118
13.67
-0.43
-0.46
AW
15.0
13.0
11.0
2.00
0.473
13.00
-0.66
-0.69
AY
AZ
lO.U
J.Z.U
14.U
JL.&3
0.354
13.67
-0.43
-0.46
BA
16.0
17.0
17.0
0.58
0.118
16.67
0.61
0.58
BB
13.0
14.0
14.0
0.58
0.118
13.67
-0.43
-0.46
BC
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
BG
6.0
8.0
7.0
1.00
0.236
7.00
-2.74
-2.77
BH
16.0
17.0
15.0
1.00
0.236
16.00
0.38
0.35
BI
13.0
12.0
12.0
0.58
0.118
12.33
-0.89
-0.92
BK
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
BL
16.0
14.0
14.0
1.15
0.236
14.67
-0.08
-0.12
BM
14.0
16.0
14.0
1.15
0.236
14.67
-0.08
-0.12
BN
15.0
17.0
12.0
2.52
0.591
14.67
-0.08
-0.12
BO
14.0
15.0
15.0
0.58
0.118
14.67
-0.08
-0.12
BW
10.0
11.0
7.0
2.08
0.473
9.33
-1.93
-1.96
C
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
CA
16.0
20.0
16.0
2.31
0.473
17.33
0.84
0.81
CC
14.0
14.0
13.0
0.58
0.118
13.67
-0.43
-0.46
CE
16.0
17.0
20.0
2.08
0.473
17.67
0.96
0.92
CG
CJ
18.0
16.0
15.0
1.53
0.354
16.33
0.50
0.46
CK
CM
15.0
26i?
15.0
m
14.0
28i0
0.58
1;00
0.118
0.236
14.67
27.00
-0.08
4; 19
-0.12
iM x
CO
18.0
18.0
15.0
1.73
0.354"
17.00
0.73
0.69
CP
16.0
16.0
15.0
0.58
0.118
15.67
0.27
0.23
CQ
18.0
17.0
16.0
1.00
0.236
17.00
0.73
0.69
cs
16.0
14.0
15.0
1.00
0.236
15.00
0.04
0.00
cx
18.0
17.0
18.0
0.58
0.118
17.67
0.96
0.92
D
12.0
16.0
15.0
2.08
0.473
14.33
-0.20
-0.23
DD
14.0
15.0
14.0
0.58
0.118
14.33
-0.20
-0.23
DE
16.0
16.0
16.0
0.00
0.000
16.00
0.38
0.35
DG
15.0
13.0
18.0
2.52
0.591
15.33
0.15
0.12
DH
15.0
16.0
16.0
34.0
0.58
0.118
W;0*236fp
15.67
0.27
r v'6;96 ::;V:
0.23
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
Lsl-
Insufficient data
x =
Determined to be an outlier
H = Below control limit
SJ
-------
r,
«•
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
5/50
Cobalt-60
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DL
13.0
14.0
13.0
0.58
0.118
13.33
-0.54
-0.58
DM
14.0
15.0
17.0
1.53
0.354
15.33
0.15
0.12
DO
16.0
15.0
21.0
3.21
0.709
17.33
0.84
0.81
DR
•
DT
14.0
110
14.0
1.73
0.354
13.00
-0.66
-0.69
DY
DZ
12.0
11.0
11.0
0.58
0.118
11.33
-1.23
-1.27
E
16.0
16.0
15.0
0.58
0.118
15.67
0.27
0.23
EA
15.0
14.0
14.0
0.58
0.118
14.33
-0.20
-0.23
EB
16.0
16.0
15.0
0.58
0.118
15.67
0.27
0.23
EH
16.0
15.0
14.0
1.00
0.236
15.00
0.04
0.00
¦jJSIj
,• -
:}Ei*
EW
15.0
17.0
22.0
3.61
0.827
18.00
1.07
1.04
EX
18.0
ifof
15.0
19.0
2.08
0.473
17.33
0.84
0.81
Mo
30.0
3.06
0.709
267671
4.08
4.04
X
FE
15.0
14.0
15.0
0.58
0.118
14.67
-0.08
-0.12
FJ
16.0
15.0
15.0
0.58
0.118
15.33
0.15
0.12
0 ;
FL
15.0
16.0
16.0
0.58
0.118
15.67
0.27
0.23
FU
14.0
15.0
16.0
1.00
0.236
15.00
0.04
0.00
FZ
19.0
18.0
16.0
1.53
0.354
17.67
0.96
0.92
GE
13.0
14.0
13.0
0.58
0.118
13.33
-0.54
-0.58
GI
15.0
13.0
14.0
1.00
0.236
14.00
-0.31
-0.35
GL
12.0
16.0
13.0
2.08
0.473
13.67
-0.43
-0.46
GO
WIM
-
0 :
'HE'
•
m
13.0
14.0
19.0
3.21
0.709
15.33
0.15
0.12
HJ
19.0
18.0
14.0
2.65
0.591
17.00
0.73
0.69
HK
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
HL
15.0
15.0
15.0
0.00
0.000
15.00
0.04
0.00
HP
16.0
16.0
17.0
0.58
0.118
16.33
0.50
0.46
HU
12.0
12.0
13.0
0.58
0.118
12.33
-0.89
-0.92
I
17.0
18.0
14.0
2.08
0.473
16.33
0.50
0.46
I ®
• ;
IC
14.0
15.0
15.0
0.58
0.118
14.67
-0.08
-0.12
•
IU
16.0
15.0
15.0
0.58
0.118
15.33
0.15
0.12
j
15.0
15.0
15.0
0.00
0.000
15.00
0.04
0.00
tIE
14.0
15.0
16.0
1.00
0.236
15.00
0.04
0.00
JI
14.0
15.0
19.0
2.65
0.591
16.00
0.38
0.35
JK
16.0
16.0
15.0
0.58
0.118
15.67
0.27
0.23
JS
16.0
15.0
16.0
0.58
0.118
15.67
0.27
0.23
JY
16.0
17.0
18.0
1.00
0.236
17.00
0.73
0.69
K
16.0
14.0
17.0
1.53
0.354
15.67
0.27
0.23
• =
No data submitted
TAG SYMBOLS
1T = Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
U s Below control limit j
-------
6 :
6 / 50 EMSL-LV Intercomparison Study
: Gamma in Water,
ll-Jun-1993
^
Cobalt-60
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
kf
9 '
KH
16.0
18.0
16.0
1.15
0.236
16.67
0.61
0.58
KL
16.0
15.0
17.0
1.00
0.236
16.00
0.38
0.35
KM
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
KX
15.0
15.0
16.0
0.58
0.118
15.33
0.15
0.12
L
15.0
13.0
12.0
1.53
0.354
13.33
-0.54
-0.58
LA
•
LE
11.0
15.0
11.0
2.31
0.473
12.33
-0.89
-0.92
LF
14.0
14.0
15.0
0.58
0.118
14.33
-0.20
-0.23
LM
•
LR
11.0
18.0
9.0
4.73
1.120
12.67
-0.77
-0.81
LT
15.0
15.0
15.0
0.00
0.000
15.00
0.04
0.00
M
15.0
15.0
16.0
0.58
0.118
15.33
0.15
0.12
MA
15.0
14.0
15.0
0.58
0.118
14.67
-0.08
-0.12
ML
19.0
25.0
32.0
6.61
2.020
25.33
3.62
3.58
X
-MN
V
MP
15.0
15.0
14.0
0.58
0.118
14.67
-0.08
-0.12
MQ
20.0
15.0
18.0
2.52
0.591
17,67
0.96
0.92
MS
14.0
16.0
15.0
1.00
0.236
15.00
0.04
0.00
MT
•
MV
12.0
14.0
16.0
2.00
0.473
14.00
-0.31
-0.35
MY
•
N
16.0
15.0
15.0
0.58
0.118
15.33
0.15
0.12
NB
12.0
13.0
15.0
1.53
0.354
13.33
-0.54
-0.58
NH
14.0
13.0
15.0
1.00
0.236
14.00
-0.31
-0.35
NI
18.0
14.0
14.0
2.31
0.473
15.33
0.15
0.12
NJ
15.0
16.0
16.0
0.58
0.118
15.67
0.27
0.23
NK
15.0
16.0
14.0
1.00
0.236
15.00
0.04
0.00
NP
18.0
15.0
13.0
2.52
0.591
15.33
0.15
0.12
NZ
23.0
24.0
18.0
3.21
0.709
21.67
2.34
2.31
O
16.0
16.0
16.0
0.00
0.000
16.00
0.38
0.35
OA
•
OB
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
OK
13.0
14.0
14.0
0.58
0.118
13.67
-0.43
-0.46
OL
•
OM
160.6
160,0
15Bi0
3.21
0:709
153.67
48.07
48:04
X
OT
•
055
•
PB
10.U
15.U
15.0
0.00
0.000
15.00
0.04
0.00
PC
13.0
14.0
12.0
1.00
0.236
13.00
-0.66
-0.69
PD
17.0
16.0
17.0
0.58
0.118
16.67
0.61
0.58
ASiO,
31.0
17,0
13.01
4.948
30.33
5.35
5,31
X
Pi
17.0
17.0
16.0
0.58
0.118
16.67
0.61
0.58
PM
13.0
18.0
16.0
2.52
0.591
15.67
0.27
0.23
PP
15.0
15.0
14.0
0.58
0.118
14.67
-0.08
-0.12
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
1 0 =
^
Insufficient data
x =
Determined to be an outlier
H = Below control limit
y/
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 7 / 50 j
Cobalt-60 ~ ^
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PQ
11.0
13.0
15.0
2.00
0.473
13.00
-0.66
-0.69
PT
14.0
16.0
16.0
1.15
0.236
15.33
0.15
0.12
PU
- •
PV
16.0
16.0
15.0
0.58
0.118
15.67
0.27
0.23
PW
•
PX
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
PY
•
Q
14.0
15.0
15.0
0.58
0.118
14.67
-0.08
-0.12
QB
16.0
16.0
16.0
0.00
0.000
16.00
0.38
0.35
QJ
15.0
19.0
16.0
2.08
0.473
16.67
0.61
0.58
QK
14.0
15.0
15.0
0.58
0.118
14.67
-0.08
-0.12
QL
QM
14.0
13.0
13.0
0.58
0.118
13.33
-0.54
-0.58
m
3z:o
551
11345
3833
8.08 x
QQ
QT
14.0
17.0
16.0
1.53
0.354
15.67
0.27
0.23
m
2.0
3.0
2.0
0.58
0.118
233
-4;35
-4;39 X
QX
22.0
24.0
22.0
1.15
0.236
22.67
2.69
2.66
QZ
15.0
15.0
15.0
0.00
0.000
15.00
0.04
0.00
R
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
RC
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
RF
14.0
13.0
15.0
1.00
0.236
14.00
-0.31
-0.35
HH
«
RK
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
RL
13.0
13.0
13.0
0.00
0.000
13.00
-0.66
-0.69
RM
15.0
14.0
15.0
0.58
0.118
14.67
-0.08
-0.12
RO
19.0
15.0
17.0
2.00
0.473
17.00
0.73
0.69
RQ
*
RR
16.0
17.0
15.0
1.00
0.236
16.00
0.38
0.35
RV
16.0
15.0
12.0
2.08
0.473
14.33
-0.20
-0.23
RX
410
510=
5.0
0.58
pW. • » WJ?
o:ii8
*67
*3,68 x
RZ
16.0
15.0
15.0
0.58
0.118
15.33
0.15
0.12
S
15.0
15.0
14.0
0.58
0.118
14.67
-0.08
-0.12
:SA
•
sc
15.0
14.0
14.0
0.58
0.118
14.33
-0.20
-0.23
SD
13.0
15.0
14.0
1.00
0.236
14.00
-0.31
-0.35
SF
7.0
6.0
7.0
0.58
0.118
6.67
-2.85
-2.89
SI
17.0
16.0
14.0
1.53
0.354
15.67
0.27
0.23
SK
10.0
10.0
10.0
0.00
0.000
10.00
-1.70
-1.73
SM
16.0
15.0
15.0
0.58
0.118
15.33
0.15
0.12
SN
•
SR
13.0
16.0
13.0
1.73
0.354
14.00
-0.31
-0.35
SS
14.0
17.0
16.0
1.53
0.354
15.67
0.27
0.23
ST
12.0
13.0
13.0
0.58
0.118
12.67
-0.77
-0.81
M
• = No data submitted TAG SYMBOLS It = Above control limit
0 = Insufficient data x = Determined to be an outlier -11 = Below control limit
-------
8/50
EMSL-LV Inter-comparison Study: Gamma in Water, ll-Jun-1993
Cobalt-60
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SV
15.0
15.0
15.0
0.00
0.000
15.00
0.04
0.00
SW
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
sz
14.0
14.0
14.0
0.00
0.000
14.00
-0.31
-0.35
T
15.0
13.0
12.0
1.53
0.354
13.33
-0.54
-0.58
TA
16.0
16.0
15.0
0.58
0.118
15.67
0.27
0.23
TB
16.0
19.0
19.0
1.73
0.354
18.00
1.07
1.04
TD
17.0
15.0
14.0
1.53
0.354
15.33
0.15
0.12
TE
•
TG
16.0
17.0
17.0
0.58
0.118
16.67
0.61
0.58
TH
15.0
17.0
15.0
1.15
0.236
15.67
0.27
0.23
TI
16.0
15.0
19.0
2.08
0.473
16.67
0.61
0.58
TK
14.0
12.0
16.0
2.00
0.473
14.00
-0.31
-0.35
TL
11.0
11.0
11.0
0.00
0.000
11.00
-1.35
-1.39
TO
9.0
13.0
15.0
3.06
0.709
12.33
-0.89
-0.92
TQ
14.0
16.0
14.0
1.15
0.236
14.67
-0.08
-0.12
TR
O
TS
15.0
14.0
14.0
0.58
0.118
14.33
-0.20
-0.23
TT,
o
TU
15.0
15.0
15.0
0.00
0.000
15.00
0.04
0.00
TV
17.0
12.0
15.0
2.52
0.591
14.67
-0.08
-0.12
TW
0
U
15.0
16.0
16.0
0.58
0.118
15.67
0.27
0.23
UB
o
UC
•
UE
18.0
17.0
18.0
0.58
0.118
17.67
0.96
0.92
UI
o
UK
19.0
23.0
27.0
4.00
0.945
23.00
2.81
2.77
UM
9
UN
23.0
13.0
15.0
5.29
1.345
17.00
0.73
0.69
UP
15.0
15.0
15.0
0.00
0.000
15.00
0.04
0.00
UR
•
UT
5.0
2.0
14.0
6.24
1.795
7.00
-2.74
-2.77
UV
12.0
14.0
16.0
2.00
0.473
14.00
-0.31
-0.35
UW
15.0
13.0
16.0
1.53
0.354
14.67
-0.08
-0.12
W
14.0
14.0
12.0
1.15
0.236
13.33
-0.54
-0.58
X
17.0
15.0
18.0
1.53
0.354
16.67
0.61
0.58
Y
15.0
15.0
15.0
0.00
0.000
15.00
0.04
0.00
Z
15.0
15.0
16.0
0.58
0.118
15.33
0.15
0.12
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
2.33
X
QU
7.00
BG
11.33
DZ
4.67
X
RX
9.33
BW
11.67
AL
6.67
SF
10.00
SK
12.33
TO
7.00
UT
11.00
TL
12.33
LE
• = No data submitted
TAG SYMBOLS
IT
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
U
= Below control limit
-------
ff 1
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
—^
9/50
Cobalt-60
\
Average
Tag
Dc
Lab
ita sorted by Laboratory Averaj
Average Tag Lab
Average
Tag
Lab
12.33
HU
14.33
TS
15.33
PT
12.33
BI
14.33
SC
15.33
NP
12.67
ST
14.33
RV
15.33
NI
12.67
LR
14.33
LF
15.33
N
13.00
RL
14.33
EA
15.33
M
13.00
PQ
14.33
DD
15.33
KX
13.00
PC
14.33
D
15.33
IU
13.00
DT
14.33
AA
15.33
HI
13.00
AW
14.67
UW
15.33
FJ
13.33
W
14.67
TV
15.33
DM
13.33
T
14.67
TQ
15.33
DG
13.33
QM
14.67
S
15.33
AF
13.33
NB
14.67
RM
15.67
U
13.33
L
14.67
QK
15.67
TH
13.33
GE
14.67
Q
15.67
TA
13.33
DL
14.67
PP
15.67
SS
13.33
AE
14.67
MP
15.67
SI
13.67
OK
14.67
MA
15.67
QT
13.67
GL
14.67
IC
15.67
PV
13.67
CC
14.67
FE
15.67
PM
13.67
BB
14.67
CK
15.67
NJ
13.67
AZ
14.67
BO
15.67
K
13.67
AU
14.67
BN
15.67
JS
13.67
A
14.67
BM
15.67
JR
14.00
UV
14.67
BL
15.67
FL
14.00
TK
15.00
Y
15.67
EB
14.00
SZ
15.00
UP
15.67
E
14.00
sw
15.00
TU
15.67
DH
14.00
SR
15.00
SV
15.67
CP
14.00
SD
15.00
QZ
15.67
AP
14.00
RK
15.00
PB
15.67
AI
14.00
RF
15.00
NK
16.00
RR
14.00
RC
15.00
MS
16.00
QB
14.00
R
15.00
LT
16.00
O
14.00
PX
15.00
JE
16.00
KL
14.00
OB
15.00
J
16.00
JI
14.00
NH
15.00
HL
16.00
DE
14.00
MV
15.00
FU
16.00
BH
14.00
KM
15.00
EH
16.00
AK
14.00
HK
15.00
CS
16.33
I
14.00
GI
15.33
Z
16.33
HP
14.00
C
15.33
TD
16.33
CJ
14.00
BK
15.33
SM
16.67
X
14.00
BC
15.33
RZ
16.67
TI
• = No data submitted
TAG SYMBOLS
ir
= Above control limit
1 0 s Insufficient data
¦ - ¦¦ ¦
x = Determined to be an outlier
V
s Below control limit J
-------
10/50
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Cobalt-60
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab
Average
Tag
Lab
16.67
16.67
16.67
16.67
16.67
16.67
16.67
17.00
17.00
17.00
17.00
TG
QJ
PI
PD
KH
BA
AN
UN
RO
JY
HJ
17.00
17.00
17.00
17.33
17.33
17.33
17.67
17.67
17.67
17.67
17.67
CQ
CO
AJ
EX
DO
CA
UE
MQ
FZ
CX
CE
18.00
18.00
21.67
22.67
23.00
25.33
26.67
27.00
30.33
35.00
38.33
153.67
x
x
X
X
X
X
X
TB
EW
NZ
QX
UK
ML
EZ
CM
PE
DJ
QP
OM
responding labs
Frequency distribution
20-
10-
JL
¦aaa
—T—
+2
—r
+6
Hi
-6
-4
-2
+4
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
20-
10-
T-
-6
. 1 I * T"
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• s No data submitted TAG SYMBOLS ft = Above control limit
[0s Insufficient data x s Determined to be an outlier II = Below control limit ^
-------
EMSL-LV LQtercomparison Study: Gamma in Water, ll-Jun-1993
11/50
Zinc-65 Statistical Summary 218 Participants
The known value of this nuclide is 103.0 pCi/1 with an expected precision of 10.0; the control limits
are 85.7 to 120.3; the warning regions are 85.7 to 91.4 and 114.6 to 120.3
42(19.3 %) Failed to respond
10(4.6 %) Outliers
12(5.5 %) Out of control'
but not an outlier
, 137(62.8 %) Within all limits
17(7.8 %) In warning zone
but within control
Statistic
Respondents
Non-outliers
Mean
106.02
Grand Avg 107.54
Std. Dev.
16.66
7.83
Variance
277.55
61.36
% Coef. of Var.
15.71
7.28
% deviation of mean from known value
2.93
4.41
Norm. dev. of mean from known value
0.18
0.58
Median
107.33
107.33
% deviation of median from known value
4.21
4.21
Norm. dev. of median from known value
0.26
0.55
24(13.6 %) More than 3 norm. S.D. »
15(8.5 %) Between 2 and 3 norm. S.D. •
.86(48.9 %) Within 1 norm. S.D.
' of known value
* 51 (29.0 %) Between 1 and 2 norm. S.D.
-------
/p-
12/50
EMSLr-LV Intercomparison Study: Gamma in Water,
ll-Jun-1993
Zinc-65
-
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
89.0
96.0
109.0
10.15
1.345
98.00
-1.65
-0.87
AA
104.0
102.0
106.0
2.00
0.236
104.00
-0.61
0.17
AE
103.0
107.0
108.0
2.65
0.295
106.00
-0.27
0.52
AF
113.0
108.0
108.0
2.89
0.295
109.67
0.37
1.15
AI
108.0
116.0
112.0
4.00
0.473
112.00
0.77
1.56
AJ
105.0
106.0
106.0
0.58
0.059
105.67
-0.32
0.46
AK
105.0
106.0
106.0
0.58
*0.059
105.67
-0.32
0.46
AL
128.0
124.0
114.0
7.21
0.827
122.00
2.50
3.29
rr
AN
112.0
110.0
100.0
6.43
0.709
107.33
-0.04
0.75
AP
109.0
108.0
106.0
1.53
0.177
107.67
0.02
0.81
AU
100.0
100.0
105.0
2.89
0.295
101.67
-1.02
-0.23
AW
103.0
107.0
106.0
2.08
0.236
105.33
-0.38
0.40
AY
'>¦
~
AZ
120.0
111.0
100.0
10.02
1.345
110.33
0.48
1.27
BA
107.0
110.0
105.0
2.52
0.295
107.33
-0.04
0.75
BB
101.0
111.0
104.0
5.13
0.591
105.33
-0.38
0.40
BC
109.0
111.0
111.0
1.15
0.118
110.33
0.48
1.27
BG
53j0-
^50.0^
4.58
0.532
49.00
-10.14
-9.35
X' •
BH
105.0
110.0
109.0
2.65
0.295
108.00
0.08
0.87
BI
82.0
88.0
94.0
6.00
0.709
88.00
-3.38
-2.60
BK
109.0
110.0
109.0
0.58
0.059
109.33
0.31
1.10
BL
106.0
104.0
107.0
1.53
0.177
105.67
-0.32
0.46
BM
106.0
111.0
107.0
2.65
0.295
108.00
0.08
0.87
BN
109.0
103.0
101.0
4.16
0.473
104.33
-0.56
0.23
BO
102.0
108.0
112.0
5.03
0.591
107.33
-0.04
0.75
BW
Mb.
62:0
7.94
0.886
71.00'
-6.33
-5.64
X
C
103.0
99.0
104.0
2*65
0.295
102.00
-0.96
-0.17
CA
108.0
113.0
121.0
6.56
0.768
114.00
1.12
1.91
CC
99.0
100.0
99.0
0.58
0.059
99.33
-1.42
-0.64
CE
106.0
110.0
104.0
3.06
0.354
106.67
-0.15
0.64
;cg-
•
CJ
123.0
122.0
119.0
2.08
0.236
121.33
2.39
3.18
ft
CK
100.0
110.0
110.0
5.77
0.591
106.67
-0.15
0.64
CM
i#;6*
iiS
iii&a
9^5/
1.233
i8LpO
12.72
13.51
¦
CO
105.0
113.0
97.0
8.00
0.945
105.00
-0.44
0.35
CP
114.0
113.0
111.0
1.53
0.177
112.67
0.89
1.67
CQ
115.0
107.0
115.0
4.62
0.473
112.33
0.83
1.62
CS
107.0
116.0
103.0
6.66
0.768
108.67
0.19
0.98
CX
119.0
114.0
118.0
2.65
0.295
117.00
1.64
2.42
D
105.0
116.0
114.0
5.86
0.650
111.67
0.71
1.50
DD
109.0
123.0
119.0
7.21
0.827
117.00
1.64
2.42
DE
106.0
107.0
108.0
1.00
0.118
107.00
-0.09
0.69
DG
135.0
108.0
138.0
16.52
2.470
127.00
3.37
4.16
IT
DH
120.0
119.0
122.0
1.53
0.177
120.33
2.22
3.00
;:J*f .
urn
7:00
0.768 .
le&oo:;
9l43:
id;22
-wv;
• = No data submitted TAG SYMBOLS IT = Above control limit
I 0 = Insufficient data x s Determined to be an outlier = Below control limit
^ 'J
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 13 / 50
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
109.0
106.0
98.0
5.69
0.650
104.33
-0.56
0.23
DM
103.0
103.0
104.0
0.58
0.059
103.33
-0.73
0.06
DO
105.0
95.0
96.0
5.51
0.591
98.67
-1.54
-0.75
DR
" ~
DT
113.0
104.0
111.0
4.73
0.532
109.33
0.31
1.10
DY '
•
DZ
99.0
103.0
94.0
4.51
0.532
98.67
-1.54
-0.75
E
111.0
117.0
110.0
3.79
0.413
112.67
0.89
1.67
EA
103.0
103.0
103.0
0.00
0.000
103.00
-0.79
0.00
EB
116.0
111.0
108.0
4.04
0.473
111.67
0.71
1.50
EH
105.0
109.0
110.0
2.65
0.295
108.00
0.08
0.87
Ha.)
'• :
/EN:-
• -
EW
77.0
79.0
100.0
12.74
1.683
85.33
-3.85
-3.06
r
EX
105.0
110.0
99.0
5.51
0.650
104.67
-0.50
0.29
EZ
124.0
126.0
130.0
3.06
0.354
126.67
3.31
4.10
tr
FE
103.0
109.0
100.0
4.58
0.532
104.00
-0.61
0.17
FJ
98.0
104.0
105.0
3.79
0.413
102.33
-0.90
-0.12
FK
0
FL
113.0
113.0
114.0
0.58
0.059
113.33
1.00
1.79
FU
112.0
112.0
112.0
0.00
0.000
112.00
0.77
1.56
FZ
110.0
110.0
110.0
0.00
0.000
110.00
0.43
1.21
GE
109.0
106.0
98.0
5.69
0.650
104.33
-0.56
0.23
GI
110.0
98.0
105.0
6.03
0.709
104.33
-0.56
0.23
GL
106.0
107.0
109.0
1.53
0.177
107.33
-0.04
0.75
|(p
135i0l
Mio
0473
136.33
4.99;
X
-
HI
105.0
94.0
101.0
5.57
0.650
100.00
-1.31
-0.52
HJ
110.0
110.0
124.0
8.08
0.827
114.67
1.23
2.02
HK
105.0
111.0
107.0
3.06
0.354
107.67
0.02
0.81
HL
105.0
105.0
105.0
0.00
0.000
105.00
-0.44
0.35
HP
121.0
123.0
125.0
2.00
0.236
123.00
2.68
3.46
it
HU
87.0
89.0
87.0
1.15
0.118
87.67
-3.44
-2.66
I
110.0
110.0
107.0
1.73
0.177
109.00
0.25
1.04
IC
fff|''
112.0
113.0
114.0
1.00
0.118
113.00
0.95
1.73
JUL
IU
108.0
111.0
108.0
1.73
0.177
109.00
0.25
1.04
J
110.0
108.0
108.0
1.15
0.118
108.67
0.19
0.98
JE
105.0
109.0
114.0
4.51
0.532
109.33
0.31
1.10
JI
102.0
101.0
101.0
0.58
0.059
101.33
-1.08
-0.29
JR
115.0
111.0
109.0
3.06
0.354
111.67
0.71
1.50
JS
100.0
105.0
128.0
14.93
2.245
111.00
0.60
1.39
JY
114.0
111.0
107.0
3.51
0.413
110.67
0.54
1.33
K
105.0
103.0
112.0
4.73
0.532
106.67
-0.15
0.64
• — No data submitted TAG SYMBOLS 1T = Above control limit
[0s Insufficient data x s Determined to be an outlier It = Below control limit
-------
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
15/50
Zinc-65
Lab
Exper. Rng anal
Rss. 1 Res. 2 Res. 3 Sigma (R + SR) Average
Normalized deviation
PQ
PT
I>U
PV
PW
PX
Q
QB
QJ
QK
QL
QM
QT
QU
QX
QZ
R
RC
RF
RH
RK
RL
RM
RO
RQ
RR
RV
RZ
S
sc
SD
•:SF*
SI
SK
SM
ZaV
SR
ss
ST
110.0
109.0
106.0
2.08
0.236
108.33
0.14
0.92
115.0
106.0
112.0
4.58
0.532
111.00
0.60
1.39
107.0
107.0
108.0
0.58
0.059
107.33
-0.04
0.75
105.0
105.0
104.0
0.58
0.059
104.67
-0.50
0.29
110.0
107.0
106.0
2.08
0.236
107.67
0.02
0.81
117.0
108.0
115.0
4.73
0.532
113.33
1.00
1.79
114.0
111.0
120.0
4.58
0.532
115.00
1.29
2.08
104.0
107.0
107.0
1.73
0.177
106.00
-0.27
0.52
107.0
93.0
100.0
7.00
0.827
100.00
-1.31
-0.52
98.0
102.0
102.0
2.31
0.236
100.67
-1.19
-0.40
88.0
84.0
86.0
2.00
0.236
86.00
-3.73
-2.94
115.0
119.0
119.0
2.31
0.236
117.67
1.75
2.54
109.0
117.0
116.0
4.36
0.473
114.00
1.12
1.91
108.0
106.0
106.0
1.15
0.118
106.67
-0.15
0.64
108.0
106.0
104.0
2.00
0.236
106.00
-0.27
0.52
108.0
111.0
115.0
3.51
0.413
111.33
0.66
1.44
102.0
92.0
95.0
5.13
0.591
96.33
-1.94
-1.15
96.0
96.0
96.0
0.00
0.000
96.00
-2.00
-1.21
105.0
98.0
100.0
3.61
0.413
101.00
-1.13
-0.35
119.0
117.0
116.0
1.53
0.177
117.33
1.70
2.48
100.0
108.0
107.0
4.36
0.473
105.00
-0.44
0.35
110.0
103.0
109.0
3.79
0.413
107.33
-0.04
0.75
*120
mM
15PE
•pO;
' "T ' 'i? 4'^
o;ooo^
12100
16;65
?15;76
112.0
110.0
115.0
2.52
0.295
112.33
0.83
1.62
109.0
114.0
112.0
2.52
0.295
111.67
0.71
1.50
108.0
99.0
108.0
5.20
0.532
105.00
-0.44
0.35
110.0
104.0
104.0
3.46
0.354
106.00
-0.27
0.52
'Mp'
IPSE
1.00
62;00
-0.62
-8^83
115.0
113.0
112.0
1.53
0.177
113^33
1.00
1.79
89.0
89.0
89.0
0.00
0.000
89.00
-3.21
-2.42
106.0
105.0
106.0
0.58
0.059
105.67
-0.32
0.46
105.0
109.0
109.0
2.31
0.236
107.67
0.02
0.81
98.0
123.0
97.0
14.73
2.020
106.00
-0.27
0.52
103.0
105.0
102.0
1.53
0.177
103.33
-0.73
0.06
• = No data submitted
L 0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above
H s Below.
control limit
control limit
-------
16/50
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SV
117.0
116.0
110.0
3.79
0.413
114.33
1.18
1.96
sw
106.0
107.0
109.0
1.53
0.177
107.33
-0.04
0.75
sz
107.0
108.0
108.0
0.58
0.059
107.67
0.02
0.81
T
99.0
100.0
101.0
1.00
0.118
100.00
-1.31
-0.52
TA
91.0
105.0
99.0
7.02
0.827
98.33
-1.60
-0.81
TB
123.0
127.0
116.0
5.57
0.650
122.00
2.50
3.29 ft
TD
114.0
103.0
109.0
5.51
0.650
108.67
0.19
0.98
:TE.:
• •
TG
111.0
103.0
94.0
8.50
1.008
102.67
-0.84
-0.06
TH
112.0
110.0
113.0
1.53
0.177
111.67
0.71
1.50
n
107.0
112.0
111.0
2.65
0.295
110.00
0.43
1.21
TK
103.0
110.0
96.0
7.00
0.827
103.00
-0.79
0.00
TL:-;
54>(K
5L0
50.0
2.08
0.236
51.67
-9.68
-8 89 x
TO
109.0
106.0
114.0
4.04
0.473
109.67
0.37
1.15
TQ
116.0
116.0
108.0
4.62
0.473
113.33
1.00
1.79
TR
TS
106.0
108.0
108.0
1.15
0.118
107.33
-0.04
0.75
TT
TU
107.0
109.0
109.0
1.15
0.118
108.33
0.14
0.92
TV
114.0
84.0
106.0
15.53
2.470
101.33
-1.08
-0.29
TW;.
U
98.0
94.0
101.0
3.51
0.413
97.67
-1.71
-0.92
UB
V&:
•.
UE
123.0
122.0
124.0
1.00
0.118
123.00
2.68
3.46 tt
in
UK
110.0
120.0
106.0
7.21
0.827
112.00
0.77
1.56
UM;-
•
UN
116.0
109.0
111.0
3.61
0.413
112.00
0.77
1.56
UP
90.0
94.0
96.0
3.06
0.354
93.33
-2.46
-1.67
XJR
'• ¦/
JJTI
22;0
7;00
0,768
1400
-16;20
-15.42 x
UV
95.0
103.0
111.0
8.00
0.945
103.00
-0.79
0.00
UW
109.0
106.0
108.0
1.53
0.177
107.67
0.02
0.81
w
104.0
103.0
93.0
6.08
0.650
100.00
-1.31
-0.52
X
110.0
107.0
101.0
4.58
0.532
106.00
-0.27
0.52
Y
108.0
103.0
97.0
5.51
0.650
102.67
-0.84
-0.06
z
113.0
116.0
110.0
3.00
0.354
113.00
0.95
1.73
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag Lab
12.00
X
RX
52.00
x
SF
86.00
QU
14.00
X
UT
71.00
X
BW
87.67
HU
49.00
X
BG
79.00
X
LE
88.00
BI
51.67
X
TL
85.33
Ji
EW
89.00
SK
• s No data submitted
TAG SYMBOLS
ft
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
4
s Below control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 17 / 50
I
¦* ' _ i i I
Zinc-65
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
91.33
PP
104.33
BN
108.33
TU
93.33
UP
104.67
PX
108.33
PQ
93.33
OK
104.67
MV
108.33
MA
93.33
L
104.67
EX
108.67
TD
95.00
ML
105.00
SC
108.67
J
96.00
RL
105.00
RR
108.67
CS
96.33
RK
105.00
HL
109.00
IU
96.67
PC
105.00
CO
109.00
I
97.67
U
105.33
BB
109.33
JE
97.67
PB
105.33
AW
109.33
DT
98.00
A
105.67
SM
109.33
BK
98.33
TA
105.67
BL
109.67
TO
98.67
DZ
105.67
AK
109.67
KH
98.67
DO
105.67
AJ
109.67
AF
99.33
NI
106.00
X
110.00
TI
99.33
CC
106.00
ss
110.00
NJ
99.67
LF
106.00
SD
110.00
LT
100.00
W
106.00
RC
110.00
FZ
100.00
T
106.00
QK
110.33
BC
100.00
QM
106.00
NB
110.33
AZ
100.00
HI
106.00
KM
110.67
JY
100.67
QT
106.00
AE
111.00
PT
101.00
RM
106.67
R
111.00
JS
101.00
NP
106.67
K
111.33
RF
101.33
TV
106.67
CK
111.33
NZ
101.33
MQ
106.67
CE
111.33
KL
101.33
JI
107.00
DE
111.67
TH
101.67
AU
107.33
TS
111.67
S
102.00
C
107.33
SW
111.67
JR
102.33
FJ
107.33
RV
111.67
EB
102.67
Y
107.33
PV
111.67
D
102.67
TG
107.33
GL
112.00
UN
103.00
UV
107.33
BO
112.00
UK
103.00
TK
107.33
BA
112.00
FU
103.00
EA
107.33
AN
112.00
AI
103.33
ST
107.67
UW
112.33
RZ
103.33
KX
107.67
sz
112.33
CQ
103.33
DM
107.67
SR
112.67
E
103.67
N
107.67
Q
112.67
CP
104.00
FE
107.67
HK
113.00
Z
104.00
AA
107.67
AP
113.00
NH
104.33
GI
108.00
EH
113.00
IC
104.33
GE
108.00
BM
113.33
TQ
104.33
DL
108.00
BH
113.33
SI
• s No data submitted
TAG SYMBOLS
ft
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
s Below control limit
-------
/f
18/50 EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Zinc-65
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab
Average
Tag
Lab
113.33
113.33
114.00
114.00
114.33
114.33
114.67
115.00
116.33
116.67
% responding labs
10-
QB
FL
QZ
CA
sv
o
HJ
QJ
PE
NK
117.00
117.00
117.33
117.67
117.67
118.33
120.33
120.33
121.00
121.33
122.00
ft
It
ft
DD
CX
RO
QX
MS
OM
MP
DH
LR
CJ
TB
Frequency distribution
122.00
123.00
123.00
123.33
124.33
126.67
127.00
129.00
136.33
162.00
181.00
ft
ft
ft
ft
ft
ft
ft
ft
x
x
X
AL
UE
HP
M
PI
EZ
DG
PD
GO
DJ
CM
-2 0 +2
Normalized deviation of the mean from the known value
% responding labs
10-
Frequency distribution
-2 0+2+4
Normalized deviation of the mean from the grand average
i s No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x = Determined to be an outlier U = Below control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
19/50
Ruthenium-106 Statistical Summary 218 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
45(20.6 %) Failed to respond
9(4.1 %) Outliers •
51 (23.4 %) Out of control
but not an outlier
Statistic
, 74(33.9 %) Within all limits
Respondents
39(17.9 %) In warning zone
but within control
Non-outliers
Mean
104.84
Grand Avg 103.87
Std. Dev.
25.58
12.83
Variance
654.41
164.65
% Coef. of Var.
24.40
12.35
% deviation of mean from known value
-11.90
-12.72
Norm. dev. of mean from known value
-0.55
-1.18
Median
103.33
103.50
% deviation of median from known value
-13.17
-13.03
Norm. dev. of median from known value
-0.61
-1.21
60(34.7 %) More than 3 norm. S.D. •
39(22.5 %) Between 2 and 3 norm. S.D.
• 29(16.8 %) Within 1 norm. S.D.
of Known value
45(26.0 %) Between 1 and 2 norm. S.D.
-------
20/50 EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
^
Ruthenium-106
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
84.0
93.0
100.0
8.02
0.788
92.33
-1.66
-3.85
u
AA
93.0
93.0
96.0
1.73
0.148
94.00
-1.42
-3.61
il
AE
92.0
94.0
106.0
7.57
0.689
97.33
-0.94
-3.13
u
AF
97.0
106.0
100.0
4.58
0.443
101.00
-0.41
-2.60
AI
85.0
79.0
99.0
10.26
0.984
87.67
-2.34
-4.52
u
AJ
104.0
101.0
97.0
3.51
0.345
100.67
-0.46
-2.65
AK
110.0
119.0
119.0
5.20
0.443
116.00
1.75
-0.43
AL
117.0
128.0
139.0
11.00
1.158
128.00
3.48
1.30
AN
106.0
98.0
117.0
9.54
0.935
107.00
0.45
-1.73
AP
124.0
109.0
97.0
13.53
1.627
110.00
0.89
-1.30
AU
90.0
90.0
90.0
0.00
0.000
90.00
-2.00
-4.19
u
AW
136.0
123.0
129.0
6.51
0.640
129.33
3.68
1.49
AY
•
AZ
110.0
99.0
144.0
23.46
3.314
117.67
1.99
-0.19
BA
112.0
112.0
123.0
6.35
0.541
115.67
1.70
-0.48
BB
125.0
111.0
108.0
9.07
0.837
114.67
1.56
-0.63
BC
109.0
107.0
112.0
2.52
0.246
109.33
0.79
-1.40
BG
51.0
48:0
59.0
569
0.541
52.67
-7.39
-9;57
X
BH
94.0
91.0
100.0
4.58
0.443
95.00
-1.28
-3.46
&
BI
86.0
104.0
88.0
9.87
0.886
92.67
-1.62
-3.80
u
BK
100.0
115.0
114.0
8.39
0.738
109.67
0.84
-1.35
BL
92.0
110.0
102.0
9.02
0.886
101.33
-0.37
-2.55
BM
111.0
114.0
121.0
5.13
0.492
115.33
1.65
-0.53
BN
95.0
89.0
93.0
3.06
0.295
92.33
-1.66
-3.85
u
BO
102.0
102.0
106.0
2.31
0.197
103.33
-0.08
-2.26
BW
•
C
95.0
100.0
92.0
4.04
0.394
95.67
-1.18
-3.37
CA
112.0
108.0
104.0
4.00
0.394
108.00
0.60
-1.59
CC
83.0
82.0
81.0
1.00
0.098
82.00
-3.16
-5.34
CE
105.0
102.0
99.0
3.00
0.295
102.00
-0.27
-2.45
CG
•
CJ
115.0
88.0
116.0
15.89
1.720
106.33
0.36
-1.83
CK
84.0
89.0
85.0
2.65
0.246
86.00
-2.58
-4.76
CM
188;0
17810
186:0
5113
0.4&2
183:67
1152
9.33
><
CO
109.0
105.0
97.0
6.11
0.591
103.67
-0.03
-2.21
CP
105.0
99.0
98.0
3.79
0.345
100.67
-0.46
-2.65
CQ
94.0
102.0
99.0
4.04
0.394
98.33
-0.80
-2.98
CS
95.0
99.0
104.0
4.51
0.443
99.33
-0.65
-2.84
CX
112.0
107.0
118.0
5.51
0.541
112.33
1.22
-0.96
D
97.0
107.0
118.0
10.50
1.064
107.33
0.50
-1.68
DD
106.0
107.0
120.0
7.81
0.689
111.00
1.03
-1.15
DE
88.0
88.0
88.0
0.00
0.000
88.00
-2.29
-4.47
4
DG
108.0
127.0
149.0
20.52
2.939
128.00
3.48
1.30
DH
105.0
107.0
103.0
2.00
0.197
105.00
0.16
-2.02
DJ
162.0
159.0
97.0
36.69
5.189
139.33
5.12
2.93
• —
No data submitted
TAG SYMBOLS
IT s Above control limit
0 -
Insufficient data
x =
Determined to be an outlier
= Below control limit
yj
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 21 / 50
Ruthenium-106
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
76.0
114.0
102.0
19.43
2.658
97.33
-0.94
-3.13
U
DM
107.0
107.0
107.0
0.00
0.000
107.00
0.45
-1.73
DO
98.0
108.0
85.0
11.53
1.252
97.00
-0.99
-3.18
DR
•
DT
100.0
124.0
114.0
12.06
1.345
112.67
1.27
-0.91
DY
DZ
iuy.u
1U1.U
113.U
b.ll
0.591
107.67
0.55
-1.64
E
116.0
133.0
122.0
8.62
0.837
123.67
2.86
0.67
EA
105.0
103.0
108.0
2.52
0.246
105.33
0.21
-1.97
EB
114.0
100.0
117.0
9.07
0.837
110.33
0.93
-1.25
EH
121.0
117.0
116.0
2.65
0.246
118.00
2.04
-0.14
EL
•
ek
•
EW
118.0
131.0
112.0
9.71
0.935
120.33
2.38
0.19
EX
158.0
137.0
139.0
11.59
1.064
144.67
5.89
3.70
ft
EZ
87.0
71.0
104.0
16.50
2.189
87.33
-2.39
-4.57
4
FE
105.0
109.0
104.0
2.65
0.246
106.00
0.31
-1.88
FJ
106.0
97.0
84.0
11.06
1.158
95.67
-1.18
-3.37
II
FK
190.0
0
FL
118.0
113.0
116.0
2.52
0.246
115.67
1.70
-0.48
FU
81.0
86.0
87.0
3.21
0.295
84.67
-2.77
-4.96
U
FZ
45.0
45:0
450
0;00
0000
45:00
-8.50,
-10.68
X
GE
76.0
114.0
102.0
19.43
2.658
97.33
-0.94
-3.13
U
GI
110.0
100.0
112.0
6.43
0.591
107.33
0.50
-1.68
GL
99.0
79.0
94.0
10.41
0.984
90.67
-1.91
-4.09
U
GO
•
HE
HI
93.0
78.0
100.0
11.24
1.158
90.33
-1.95
-4.14
HJ
96.0
120.0
115.0
12.66
1.345
110.33
0.93
-1.25
HK
95.0
95.0
94.0
0.58
0.049
94.67
-1.33
-3.51
HL
122.0
122.0
122.0
0.00
0.000
122.00
2.62
0.43
HP
117.0
125.0
121.0
4.00
0.394
121.00
2.47
0.29
HU
100.0
104.0
104.0
2.31
0.197
102.67
-0.17
-2.36
I
114.0
97.0
108.0
8.62
0.837
106.33
0.36
-1.83
IA
•
IC
II:
93.0
99.0
105.0
6.00
0.591
99.00
-0.70
-2.89
MJL
IU
98.0
80.0
99.0
10.69
0.935
92.33
-1.66
-3.85
9
U
J
107.0
109.0
90.0
10.44
0.935
102.00
-0.27
-2.45
JE
82.0
94.0
92.0
6.43
0.591
89.33
-2.10
-4.28
U
JI
127.0
91.0
119.0
18.90
2.470
112.33
1.22
-0.96
UK
99.0
102.0
105.0
3.00
0.295
102.00
-0.27
-2.45
JS
87.0
93.0
78.0
7.55
0.738
86.00
-2.58
-4.76
U
JY
163.0
142.0
82.0
42.04
6.690
129.00
3.63
1.44
K
90.0
94.0
94.0
2.31
0.197
92.67
-1.62
-3.80
in '»
• Q
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
U s Below control limit
-------
:
22 / 50 EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
V-
(
Ruthenium-106
Exper. Rng anal Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
• kf"
KH
116.0
122.0
110.0
6.00
0.591
116.00
1.75
-0.43
KL
134.0
115.0
117.0
10.44
0.935
122.00
2.62
0.43
KM
109.0
104.0
100.0
4.51
0.443
104.33
0.07
-2.12
KX
104.0
101.0
95.0
4.58
0.443
100.00
-0.56
-2.74
L
94.0
105.0
87.0
9.07
0.886
95.33
-1.23
-3.42
LA
,•
LE
98.0
129.0
98.0
17.90
2.002
108.33
0.64
-1.54
LF
83.0
110.0
90.0
14.01
1.627
94.33
-1.38
-3.56
LM
• ,
LR
112.0
97.0
99.0
8.14
0.738
102.67
-0.17
-2.36
LT
110.0
110.0
110.0
0.00
0.000
110.00
0.89
-1.30
M
95.0
98.0
99.0
2.08
0.197
97.33
-0.94
-3.13
U
MA
88.0
84.0
88.0
2.31
0.197
86.67
-2.48
-4.67
U
ML
74.0
68.0
73.0
3.21
0.295
71.67
-4.65
-6.83
rMN
-
MP
119.0
105.0
101.0
9.45
0.886
108.33
0.64
-1.54
MQ
138.0
123.0
135.0
7.94
0.738
132.00
4.06
1.88
MS
106.0
94.0
86.0
10.07
0.984
95.33
-1.23
-3.42
MT
MV
131.0
112.0
115.0
10.21
0.935
119.33
2.23
0.05
•MY
«
N
100.0
104.0
104.0
2.31
0.197
102.67
-0.17
-2.36
NB
92.0
98.0
95.0
3.00
0.295
95.00
-1.28
-3.46
NH
107.0
101.0
96.0
5.51
0.541
101.33
-0.37
-2.55
NI
84.0
83.0
63.0
11.85
1.064
76.67
-3.93
-6.11
NJ
100.0
110.0
110.0
5.77
0.492
106.67
0.40
-1.78
NK
89.0
105.0
108.0
10.21
0.935
100.67
-0.46
-2.65
NP
112.0
117.0
130.0
9.29
0.886
119.67
2.28
0.10
NZ
71.0
115.0
113.0
24.85
3.221
99.67
-0.61
-2.79
0
98.0
101.0
100.0
1.53
0.148
99.67
-0.61
-2.79
joa?;
OB
•
OK
126.0
123.0
116.0
5.13
0.492
121.67
2.57
0.38
OL
OM
104.0
100.0
100.0
2.31
0.197
101.33
-0.37
-2.55
vOT;
¦ •• -
':OZ;
" • '
PB
1110
115.0
102.0
6.66
0.640
109.33
0.79
-1.40
PC
81.0
86.0
84.0
2.52
0.246
83.67
-2.92
-5.10
PD
99.0
90.0
135.0
23.81
3.314
108.00
0.60
-1.59
PE
2260.
2110
212.0
8.39
0.738
21633
16:23
14.05
X
PI
113.0
109.0
104.0
4.51
0.443
108.67
0.69
-1.49
PM
PP
82.0
107.0
106.0
14.15
1.439
98.33
-0.80
-2.98
• s No data submitted TAG SYMBOLS 1T = Above control limit
0 = Insufficient data x = Determined to be an outlier W = Below control limit
V? -JJ
-------
EM8L-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 23 / 50
Rutheniuxn-106
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PQ
107.0
102.0
104.0
2.52
0.246
104.33
0.07
-2.12
PT
113.0
105.0
122.0
8.50
0.837
113.33
1.37
-0.82
PU
*
PV
109.0
106.0
110.0
2.08
0.197
108.33
0.64
-1.54
PW
•<
PX
106.0
114.0
109.0
4.04
0.394
109.67
0.84
-1.35
FY
•
Q
107.0
1U8.U
iuy.u
I.UU
u.uy«
108.00
0.60
-1.59
QB
95.0
97.0
112.0
9.29
0.837
101.33
-0.37
-2.55
QJ
102.0
113.0
105.0
5.69
0.541
106.67
0.40
-1.78
QK
130.0
122.0
117.0
6.56
0.640
123.00
2.76
0.58
•
QM
100.0
100.0
93.0
4.04
0.345
97.67
-0.90
-3.08
QQ
•
QT
112.0
115.0
100.0
7.94
0.738
109.00
0.74
-1.44
QU
62.0
64.0
67.0
2.52
0.246
64.33
-5.71
-7.89
QX
130.0
124.0
138.0
7.02
0.689
130.67
3.87
1.68
QZ
111.0
103.0
100.0
5.69
0.541
104.67
0.12
-2.07
R
104.0
103.0
103.0
0.58
0.049
103.33
-0.08
-2.26
RC
96.0
95.0
95.0
0.58
0.049
95.33
-1.23
-3.42
RF
91.0
76.0
88.0
7.94
0.738
85.00
-2.72
-4.91
u
Rfi
•
RK
101.0
108.0
90.0
9.07
0.886
99.67
-0.61
-2.79
RL
81.0
81.0
81.0
0.00
0.000
81.00
-3.30
-5.48
RM
220;0;
219.0
2i8.0
1.00
0.098
219.00
16:62
14:43
X
RU
122.0
122.0
113.0
5.20
0.443
119.00
2.18
0.00
HQ
*
RR
92.0
104.0
115.0
11.50
1.252
103.67
-0.03
-2.21
RV
96.0
78.0
69.0
13.75
1.627
81.00
-3.30
-5.48
RX
47i0
41:0
530
6.00
0.591
4700
8i21
410.39
X
RZ
108.0
102.0
112.0
5.03
0.492
107.33
0.50
-1.68
S
89.0
85.0
91.0
3.06
0.295
88.33
-2.24
-4.43
SA
•
sc
106.0
107.0
108.0
1.00
0.098
107.00
0.45
-1.73
SD
91.0
107.0
97.0
8.08
0.788
98.33
-0.80
-2.98
SF
4310
43.0
4010
1.73
0;148
42.00
-8.93
-1111
X
SI
91.0
111.0
96.0
10.41
0.984
99.33
-0.65
-2.84
SK
72.0
72.0
72.0
0.00
0.000
72.00
-4.60
-6.78
SM
122.0
113.0
114.0
4.93
0.443
116.33
1.80
-0.38
SN
•
SR
107.0
115.0
104.0
5.69
0.541
108.67
0.69
-1.49
ss
103.0
121.0
102.0
10.69
0.935
108.67
0.69
-1.49
ST
98.0
99.0
107.0
4.93
0.443
101.33
-0.37
-2.55
su
•
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
U = Below control limit
-------
'
24/50 EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Ruthenium-106
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known)
SV
93.0
128.0
89.0
21.46
2.752
103.33
-0.08
-2.26
SW
110.0
108.0
110.0
1.15
0.098
109.33
0.79
-1.40
sz
92.0
92.0
96.0
2.31
0.197
93.33
-1.52
-3.70
T
117.0
112.0
130.0
9.29
0.886
119.67
2.28
0.10
TA
111.0
120.0
121.0
5.51
0.492
117.33
1.94
-0.24
TB
123.0
106.0
113.0
8.54
0.837
114.00
1.46
-0.72
TD
93.0
107.0
96.0
7.37
0.689
98.67
-0.75
-2.93
TE
TG
94.0
113.0
112.0
10.69
0.935
106.33
0.36
-1.83
TH
117.0
116.0
121.0
2.65
0.246
118.00
2.04
-0.14
TI
111.0
103.0
103.0
4.62
0.394
105.67
0.26
-1.92
TK
17:0 •
10.0
14.0
3,51
0.345
13.67
-13.02
-15.20
TL
98.0
95^0
55.0
24.01
3.127
82.67
-3.06
-5.24
TO
82.0
106.0
107.0
14.15
1.439
98.33
-0.80
-2.98
TQ
93.0
97.0
95.0
2.00
0.197
95.00
-1.28
-3.46
TR
TS
107.0
109.0
118.0
5.86
0.541
111.33
1.08
-1.11
TT
TU
109.0
111.0
113.0
2.00
0.197
111.00
1.03
-1.15
TV
103.0
94.0
78.0
12.66
1.439
91.67
-1.76
-3.95
Tm
U
122.0
118.0
120.0
2.00
0.197
120.00
2.33
0.14
UB
tic
UE
118.0
112.0
122.0
5.03
0.492
117.33
1.94
-0.24
UI
UK
92.0
101.0
115.0
11.59
1.252
102.67
-0.17
-2.36
UM
UN
28310^
2740:
294.0
10.02
0.984
283.67
25.95
23.77
UP
80.0
90.0
91.0
6.08
0.541
87.00
-2.43
-4.62
UR
UT
uv
101.0
103.0
90.0
7.00
0.640
98.00
-0.85
-3.03
uw
112.0
114.0
108.0
3.06
0.295
111.33
1.08
-1.11
w
98.0
86.0
98.0
6.93
0.591
94.00
-1.42
-3.61
X
99.0
84.0
87.0
7.94
0.738
90.00
-2.00
-4.19
Y
110.0
103.0
116.0
6.51
0.640
109.67
0.84
-1.35
Z
tmmiii
104.0
101.0
100.0
2.08
0.197
101.67
-0.32
-2.50
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
13.67
X
TK
52.67
X
BG
76.67
NI
42.00
X
SF
64.33
11
QU
81.00
u
RV
45.00
X
FZ
71.67
U
ML
81.00
u
RL
47.00
X
RX
72.00
SK
82.00
11
CC
x
U
II
u
• s No data submitted
0 ~ Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT — Above control limit
¦li = Below control limit
-------
EMSL-LV Intei-comparison Study: Gamma in Water, ll-Jun-1993 25/50
v
i- ¦ ¦ ¦ -
Ruthenium-106
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
82.67
U
TL
98.33
SD
106.67
NJ
83.67
U
PC
98.33
PP
107.00
SC
84.67
U
FU
98.33
CQ
107.00
DM
85.00
U
RF
98.67
TD
107.00
AN
86.00
u
JS
99.00
IC
107.33
RZ
86.00
u
CK
99.33
SI
107.33
GI
86.67
MA
99.33
CS
107.33
D
87.00
u
UP
99.67
RK
107.67
DZ
87.33
u
EZ
99.67
O
108.00
Q
87.67
AI
99.67
NZ
108.00
PD
88.00
DE
100.00
KX
108.00
CA
88.33
S
100.67
NK
108.33
PV
89.33
It
JE
100.67
CP
108.33
MP
90.00
u
X
100.67
AJ
108.33
LE
90.00
u
AU
101.00
AF
108.67
SS
90.33
m
101.33
ST
108.67
SR
90.67
11
GL
101.33
QB
108.67
PI
91.67
11
TV
101.33
OM
109.00
QT
92.33
11
IU
101.33
NH
109.33
SW
92.33
11
BN
101.33
BL
109.33
PB
92.33
u
A
101.67
Z
109.33
BC
92.67
u
K
102.00
JR
109.67
Y
92.67
11
BI
102.00
J
109.67
PX
93.33
11
sz
102.00
CE
109.67
BK
94.00
11
w
102.67
UK
110.00
LT
94.00
11
AA
102.67
N
110.00
AP
94.33
11
LF
102.67
LR
110.33
HJ
94.67
11
HK
102.67
HU
110.33
EB
95.00
11
TQ
103.33
SV
111.00
TU
95.00
u
NB
103.33
R
111.00
DD
95.00
JJ
BH
103.33
BO
111.33
UW
95.33
11
RC
103.67
RR
111.33
TS
95.33
11
MS
103.67
CO
112.33
JI
95.33
11
L
104.33
PQ
112.33
CX
95.67
11
FJ
104.33
KM
112.67
DT
95.67
11
C
104.67
QZ
113.33
PT
97.00
u
DO
105.00
DH
114.00
TB
97.33
11
M
105.33
EA
114.67
BB
97.33
11
GE
105.67
TT
115.33
BM
97.33
11
DL
106.00
FE
115.67
FL
97.33
11
AE
106.33
TG
115.67
BA
97.67
11
QM
106.33
I
116.00
KH
98.00
11
UV
106.33
CJ
116.00
AK
98.33
TO
106.67
QJ
116.33
SM
• s No data submitted
TAG SYMBOLS
1t
= Above control limit
0 = Insufficient data
x s Determined to be an outlier
11
— Below control limit
-------
6 ====
26/50 EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
v
Ruthenium-106
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
117.33
UE
120.00
U
129.00
JY
117.33
TA
120.33
EW
129.33
AW
117.67
AZ
121.00
HP
130.67
QX
118.00
TH
121.67
OK
132.00
MQ
118.00
EH
122.00
KL
139.33
DJ
119.00
RO
122.00
HL
144.67
tr
EX
119.33
MV
123.00
QK
183.67
X
CM
119.67
T
123.67
E
216.33
X
PE
119.67
NP
128.00
DG
219.00
X
RM
128.00
AL
283.67
X
UN
responding labs
Frequency distribution
mnrnr,.
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
+6
% responding labs
10-— 5
Frequency distribution
-EL.
——I
-6
-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 = Above control limit
•11 ~ Below control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 27 / 50
11 -¦ " ¦¦ - ¦¦ i— ¦
Cesium-134 Statistical Summary 218 Participants
The known value of this nuclide is 5.0 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 13.7; the warning regions are 0.0 to 0.0 and 10.8 to 13.7
Statistic Respondents Non-outliers
Mean
5.71
Grand Avg 5.39
Std. Dev.
3.40
1.57
Variance
11.58
2.46
% Coef. of Var.
59.60
29.14
% deviation of mean from known value
14.21
7.71
Norm. dev. of mean from known value
0.21
0.25
Median
5.00
5.00
% deviation of median from known value
0.00
0.00
Norm. dev. of median from known value
0.00
0.00
3(1.8 %) Mora than 3 norm. S.D.
1 (0.6 %) Between 2 and 3 norm. S.D.'
; 154(91.7 %) Within 1 norm. S.D.
t
of known value
• 10(6.0 %) Between 1 and 2 norm. S.D.
-------
=^v
28/50 EMSLrLV Intercomparison Study: Gamma in Water, 1 l-Jun-1993
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
4.0
4.0
5.0
0.58
0.118
4.33
-0.36
-0.23
AA
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
AE
5.0
4.0
4.0
0.58
0.118
4.33
-0.36
-0.23
AF
5.0
5.0
4.0
0.58
0.118
4.67
-0.25
-0.12
AI
4.0
5.0
5.0
0.58
0.118
4.67
-0.25
-0.12
AJ
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
AK
5.0
5.0
6.0
0.58
0.118
5.33
-0.02
0.12
AL
7.0
5.0
11.0
3.06
0.709
7.67
0.79
0.92
AN
4.0
4.0
4.0
0.00
0.000
4.00
-0.48
-0.35
AP
6.0
6.0
5.0
0.58
0.118
5.67
0.10
0.23
AU
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
AW
6.0
2.0
2.0
2.31
0.473
3.33
-0.71
-0.58
AY
AZ
6.0
5.0
6.0
0.58
0.118
5.67
0.10
0.23
BA
7.0
7.0
7.0
0.00
0.000
7.00
0.56
0.69
BB
6.0
6.0
5.0
0.58
0.118
5.67
0.10
0.23
BC
4.0
5.0
4.0
0.58
0.118
4.33
-0.36
-0.23
BG
4.0
2.0
3.0
1.00
0.236
3.00
-0.83
-0.69
BH
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
BI
5.0
6.0
4.0
1.00
0.236
5.00
-0.13
0.00
BK
5.0
5.0
6.0
0.58
0.118
5.33
-0.02
0.12
BL
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
BM
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
BN
5.0
4.0
4.0
0.58
0.118
4.33
-0.36
-0.23
BO
5.0
4.0
3.0
1.00
0.236
4.00
-0.48
-0.35
BW
5.0
4.0
7.0
1.53
0.354
5.33
-0.02
0.12
C
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
CA
6.0
6.0
5.0
0.58
0.118
5.67
0.10
0.23
CC
5.0
4.0
5.0
0.58
0.118
4.67
-0.25
-0.12
CE
4.0
5.0
6.0
1.00
0.236
5.00
-0.13
0.00
CG
•
CJ
6.0
6.0
5.0
0.58
0.118
5.67
0.10
0.23
CK
5.0
5.0
6.0
0.58
0.118
5.33
-0.02
0.12
CM
9.0
13.0
15.0
3.06
0.709
12.33
2.41
2.54
CO
CP
5.0
6.0
6.0
0.58
0.118
5.67
0.10
0.23
CQ
7.0
6.0
6.0
0.58
0.118
6.33
0.33
0.46
CS
5.0
4.0
5.0
0.58
0.118
4.67
-0.25
-0.12
CX
6.0
7.0
8.0
1.00
0.236
7.00
0.56
0.69
D
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
DD
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
DE
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
DG
8.0
9.0
12.0
2.08
0.473
9.67
1.48
1.62
DH
6.0
6.0
6.0
0.00
0.000
6.00
0.21
0.35
DJ
3110
27.0
24>0
3.51
0.827
27;33
7.60
7;74 x
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
Insufficient data
X s
Determined to be an outlier
•II- = Below control limit
-------
¦>
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 29 / 50
Cesium-134
¦v
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DL
4.0
4.0
5.0
0.58
0.118
4.33
-0.36
-0.23
DM
6.0
6.0
6.0
0.00
0.000
6.00
0.21
0.35
DO
•
DR
~
DT
6.0
5.0
3.0
1.53
0.354
4.67
-0.25
-0.12
DY
•
DZ
7.0
6.0
6.0
0.58
0.118
6.33
0.33
0.46
E
6.0
5.0
6.0
0.58
0.118
5.67
0.10
0.23
EA
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
EB
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
EH
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
EL
•
EN
•
EW
7.0
3.0
11.0
4.00
0.945
7.00
0.56
0.69
EX
7.0
8.0
8.0
0.58
0.118
7.67
0.79
0.92
EZ
6.0
12.0
13.0
3.79
0.827
10.33
1.71
1.85
FE
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
FJ
6.0
6.0
6.0
0.00
0.000
6.00
0.21
0.35
FK
6.0
0
FL
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
FU
4.0
5.0
5.0
0.58
0.118
4.67
-0.25
-0.12
FZ
6.0
9.0
7.0
1.53
0.354
7.33
0.67
0.81
GE
4.0
4.0
5.0
0.58
0.118
4.33
-0.36
-0.23
GI
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
GL
4.0
4.0
6.0
1.15
0.236
4.67
-0.25
-0.12
<30
•
he
•
HI
•
HJ
8.0
6.0
6.0
1.15
0.236
6.67
0.44
0.58
HK
4.0
5.0
6.0
1.00
0.236
5.00
-0.13
0.00
HL
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
HP
2.0
2.0
2.0
0.00
0.000
2.00
-1.17
-1.04
HU
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
I
4.0
6.0
7.0
1.53
0.354
5.67
0.10
0.23
tA
•
IC
5.0
4.0
4.0
0.58
0.118
4.33
-0.36
-0.23
JlX
IU
5.0
7.0
6.0
1.00
0.236
6.00
0.21
0.35
J
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
JE
5.0
4.0
5.0
0.58
0.118
4.67
-0.25
-0.12
JI
5.0
6.0
6.0
0.58
0.118
5.67
0.10
0.23
JR
6.0
7.0
6.0
0.58
0.118
6.33
0.33
0.46
JS
6.0
6.0
5.0
0.58
0.118
5.67
0.10
0.23
JY
7.0
6.0
5.0
1.00
0.236
6.00
0.21
0.35
K
4.0
5.0
4.0
0.58
0.118
4.33
-0.36
-0.23
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
[0.
Insufficient data
x =
Determined to be an outlier
•11 h Below control limit
-------
30/50 EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
Hi?
•
KH
8.0
6.0
6.0
1.15
0.236
6.67
0.44
0.58
KL
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
KM
4.0
4.0
4.0
0.00
0.000
4.00
-0.48
-0.35
KX
9.0
7.0
5.0
2.00
0.473
7.00
0.56
0.69
L
5.0
3.0
4.0
1.00
0.236
4.00
-0.48
-0.35
LA
•
LE
¦ •
LF
5.0
5.0
4.0
0.58
0.118
4.67
-0.25
-0.12
LM
•
LR
2.0
6.0
4.0
2.00
0.473
4.00
-0.48
-0.35
LT
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
M
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
MA
5.0
4.0
5.0
0.58
0.118
4.67
-0.25
-0.12
ML
8.0
7.0
9.0
1.00
0.236
8.00
0.91
1.04
MN
MP
12.0
9.0
9.0
1.73
0.354
10.00
1.60
1.73
MQ
6.0
9.0
9.0
1.73
0.354
8.00
0.91
1.04
MS
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
MT
MV
4.0
5.0
5.0
0.58
0.118
4.67
-0.25
-0.12
MY
•
N
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
NB
7.0
6.0
3.0
2.08
0.473
5.33
-0.02
0.12
NH
4.0
4.0
7.0
1.73
0.354
5.00
-0.13
0.00
NI
4.0
4.0
5.0
0.58
0.118
4.33
-0.36
-0.23
NJ
4.0
5.0
4.0
0.58
0.118
4.33
-0.36
-0.23
NK
NP
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
NZ
12.0
14.0
15.0
1.53
0.354
13.67
2.87
3.00
0
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
OA
OB
v
OK
5.0
5.0
6.0
0.58
0.118
5.33
-0.02
0.12
OL
OM
10.0
10.0
11.0
0.58
0.118
10.33
1.71
1.85
OT
-o
OZ
o
PB
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
PC
3.0
5.0
3.0
1.15
0.236
3.67
-0.60
-0.46
PD
5.0
5.0
8.0
1.73
0.354
6.00
0.21
0.35
PE
6.0
7.0
8.0
1.00
0.236
7.00
0.56
0.69
PI
6.0
6.0
5.0
0.58
0.118
5.67
0.10
0.23
PM
7.0
6.0
8.0
1.00
0.236
7.00
0.56
0.69
PP
6.0
6.0
6.0
0.00
0.000
6.00
0.21
0.35
• = No data submitted TAG SYMBOLS ft = Above control limit
I 0 = Insufficient data x = Determined to be an outlier 11 = Below control limit
y- —'J
-------
(f
>
EMSL-LV Intercomparison Study
Gamma in Water,
ll-Jun-1993
31/50
Cesium-134
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PQ
4.0
4.0
3.0
0.58
0.118
3.67
-0.60
-0.46
PT
4.0
5.0
5.0
0.58
0.118
4.67
-0.25
-0.12
PU
•
PV
8.0
6.0
4.0
2.00
0.473
6.00
0.21
0.35
PW
-•
PX
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
FY
•
Q
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
QB
6.0
4.0
6.0
1.15
0.236
5.33
-0.02
0.12
QJ
•
QK
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
QL
• -
QM
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
QP
•
QQ
•
QT
6.0
6.0
6.0
0.00
0.000
6.00
0.21
0.35
QU
3.0
4.0
3.0
0.58
0.118
3.33
-0.71
-0.58
QX
6.0
6.0
6.0
0.00
0.000
6.00
0.21
0.35
QZ
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
R
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
RC
3.0
3.0
4.0
0.58
0.118
3.33
-0.71
-0.58
RF
5.0
4.0
5.0
0.58
0.118
4.67
-0.25
-0.12
RH
•
RK
4.0
5.0
3.0
1.00
0.236
4.00
-0.48
-0.35
RL
4.0
4.0
4.0
0.00
0.000
4.00
-0.48
-0.35
RM
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
RO
6.0
6.0
7.0
0.58
0.118
6.33
0.33
0.46
RQ
RR
6.0
6.0
5.0
0.58
0.118
5.67
0.10
0.23
RV
5.0
4.0
4.0
0.58
0.118
4.33
-0.36
-0.23
RX
2.0
3.0
4.0
1.00
0.236
3.00
-0.83
-0.69
RZ
8.0
7.0
6.0
1.00
0.236
7.00
0.56
0.69
S
4.0
5.0
5.0
0.58
0.118
4.67
-0.25
-0.12
SA
•
sc
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
SD
5.0
4.0
5.0
0.58
0.118
4.67
-0.25
-0.12
SF
2.0
2.0
2.0
0.00
0.000
2.00
-1.17
-1.04
SI
5.0
7.0
6.0
1.00
0.236
6.00
0.21
0.35
SR
380
38.0
38.0
0.00
0.000
38.00
ll;30
11.43
X
SM
6.0
5.0
7.0
1.00
0.236
6.00
0.21
0.35
sn:
SR
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
ss
5.0
5.0
6.0
0.58
0.118
5.33
-0.02
0.12
ST
4.0
5.0
4.0
0.58
0.118
4.33
-0.36
-0.23
SIX;
•
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
II = Below control limit
-------
32/50
EMSL-LV Intercomparison Study: Gamma in Water, ll-Juxi-1993
Cesium-134
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SV
*0
9.0
0
SW
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
sz
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
T
7.0
6.0
5.0
1.00
0.236
6.00
0.21
0.35
TA
5.0
5.0
6.0
0.58
0.118
5.33
-0.02
0.12
TB
5.0
5.0
6.0
0.58
0.118
5.33
-0.02
0.12
TD
5.0
5.0
4.0
0.58
0.118
4.67
-0.25
-0.12
TE
•
TG
9.0
8.0
5.0
2.08
0.473
7.33
0.67
0.81
TH
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
TI
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
TK
3.0
4.0
2.0
1.00
0.236
3.00
-0.83
-0.69
TL
7.0
7.0
6.0
0.58
0.118
6.67
0.44
0.58
TO
6.0
7.0
3.0
2.08
0.473
5.33
-0.02
0.12
TQ
6.0
5.0
5.0
0.58
0.118
5.33
-0.02
0.12
TR
•
TS
4.0
5.0
5.0
0.58
0.118
4.67
-0.25
-0.12
TT
C
TU
5.0
4.0
4.0
0.58
0.118
4.33
-0.36
-0.23
TV
10.0
8.0
11.0
1.53
0.354
9.67
1.48
1.62
TW
•
U
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
UB
UC
UE
5.0
5.0
5.0
0.00
0.000
5.00
-0.13
0.00
UI
•
UK
1.0
4.0
1.0
1.73
0.354
2.00
-1.17
-1.04
UJYl
• -
UN
4.0
4.0
3.0
0.58
0.118
3.67
-0.60
-0.46
UP
6.0
5.0
6.0
0.58
0.118
5.67
0.10
0.23
UB
•
UT
7.0
4.0
6.0
1.53
0.354
5.67
0.10
0.23
UV
5i0
0
UW
4.0
6.0
4.0
1.15
0.236
4.67
-0.25
-0.12
W
4.0
4.0
4.0
0.00
0.000
4.00
-0.48
-0.35
X
5.0
6.0
5.0
0.58
0.118
5.33
-0.02
0.12
Y
5.0
5.0
6.0
0.58
0.118
5.33
-0.02
0.12
Z
5.0
4.0
5.0
0.58
0.118
4.67
-0.25
-0.12
GBRBEES
.V'
v.
.r.'w \ if'."'] ;•»
E9H91
Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
2.00
UK
3.00
RX
3.33
AW
2.00
SF
3.00
BG
3.67
UN
2.00
HP
3.33
RC
3.67
PQ
3.00
TK
3.33
QU
3.67
PC
• 2 No data submitted
TAG SYMBOLS
n
= Above control limit
0 s Insufficient data
x = Determined to be an
outlier
a
s Below control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Cesium-134
33/50
Data sorted by Laboratory Average
Average
Tat?
Lab
Average
Tag
Lab
Average
Tag
Lab
4.00
W
5.00
SW
5.33
QK
4.00
RL
5.00
SC
5.33
QB
4.00
RK
5.00
R
5.33
PB
4.00
LR
5.00
QZ
5.33
OK
4.00
L
5.00
QM
5.33
NB
4.00
KM
5.00
Q
5.33
N
4.00
BO
5.00
PX
5.33
CK
4.00
AN
5.00
O
5.33
BW
4.33
TU
5.00
NP
5.33
BL
4.33
ST
5.00
NH
5.33
BK
4.33
RV
5.00
MS
5.33
AU
4.33
NJ
5.00
M
5.33
AK
4.33
NI
5.00
LT
5.67
UT
4.33
K
5.00
KL
5.67
UP
4.33
IC
5.00
J
5.67
RR
4.33
GE
5.00
HU
5.67
PI
4.33
DL
5.00
HL
5.67
JS
4.33
BN
5.00
HK
5.67
JI
4.33
BC
5.00
GI
5.67
I
4.33
AE
5.00
FL
5.67
E
4.33
A
5.00
FE
5.67
CP
4.67
Z
5.00
EH
5.67
CJ
4.67
UW
5.00
EB
5.67
CA
4.67
TS
5.00
EA
5.67
BB
4.67
TD
5.00
DE
5.67
AZ
4.67
SD
5.00
DD
5.67
AP
4.67
S
5.00
D
6.00
T
4.67
RF
5.00
CE
6.00
SM
4.67
PT
5.00
C
6.00
SI
4.67
MV
5.00
BM
6.00
QX
4.67
MA
5.00
BI
6.00
QT
4.67
LF
5.00
BH
6.00
PV
4.67
JE
5.00
AJ
6.00
PP
4.67
GL
5.00
AA
6.00
PD
4.67
FU
5.33
Y
6.00
JY
4.67
DT
5.33
X
6.00
IU
4.67
CS
5.33
TQ
6.00
FJ
4.67
CC
5.33
TO
6.00
DM
4.67
AI
5.33
TI
6.00
DH
4.67
AF
5.33
TB
6.33
RO
5.00
UE
5.33
TA
6.33
JR
5.00
U
5.33
SS
6.33
DZ
5.00
TH
5.33
SR
6.33
CQ
5.00
SZ
5.33
RM
6.67
TL
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
¦li = Below control limit
-------
34/50
EMSlrLV Intercomparison Study: Gamma in Water, ll-Jun-1993
Cesium-134
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
6.67
KH
7.00
BA
9.67
DG
6.67
HJ
7.33
TG
10.00
MP
7.00
RZ
7.33
FZ
10.33
OM
7.00
PM
7.67
EX
10.33
EZ
7.00
PE
7.67
AL
12.33
CM
7.00
KX
8.00
MQ
13.67
NZ
7.00
EW
8.00
ML
27.33
X
DJ
7.00
CX
9.67
TV
38.00
X
SK
% responding labs
Frequency distribution
20-
10-
T-
-4
_mBL
—r"
+6
-6
responding labs
-2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
30-
20-
10-
HnB , w
+4
—r"
+6
-4 -2 0 +2
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS IT = Above control limit
[0s Insufficient data x s Determined to be an outlier 11 = Belowcontrol limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 35 / 50
f
Cesium-137 Statistical Summary 218 Participants
The known value of this nuclide is 5.0 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 13.7; the warning regions are 0.0 to 0.0 and 10.8 to 13.7
*
0
0
0
0
•
0
5(2.3 %) Outliers *'
Statistic Respondents Non-outliers
Mean
14.23
Grand Avg 5.76
Std. Dev.
106.03
1.47
Variance
11242.71
2.16
% Coef. of Var.
745.20
25.50
% deviation of mean from known value
184.57
15.29
Norm. dev. of mean from known value
0.09
0.52
Median
5.33
5.33
% deviation of median from known value
6.67
6.67
Norm. dev. of median from known value
0.00
0.23
; 150(85.7 %) Within 1 norm. S.D.
0
-------
'
36 / 50 EMSL-LV Intercomparison Study
Gamma in Water,
ll-Jun-1993
^
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
5.0
5.0
6.0
0.58
0.118
5.33
-0.15
0.12
AA
8.0
9.0
9.0
0.58
0.118
8.67
1.01
1.27
AE
5.0
6.0
6.0
0.58
0.118
5.67
-0.03
0.23
AF
5.0
4.0
5.0
0.58
0.118
4.67
-0.38
-0.12
AI
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
AJ
7.0
6.0
6.0
0.58
0.118
6.33
0.20
0.46
AK
6.0
5.0
5.0
0.58
0.118
5.33
-0.15
0.12
AL
9.0
3.0
5.0
3.06
0.709
5.67
-0.03
0.23
AN
6.0
6.0
6.0
0.00
0.000
6.00
0.08
0.35
AP
6.0
6.0
5.0
0.58
0.118
5.67
-0.03
0.23
AU
6.0
7.0
6.0
0.58
0.118
6.33
0.20
0.46
AW
2.0
2.0
2.0
0.00
0.000
2.00
-1.30
-1.04
AY
AZ
7.0
8.0
10.0
1.53
0.354
8.33
0.89
1.15
BA
6.0
9.0
6.0
1.73
0.354
7.00
0.43
0.69
BB
6.0
5.0
4.0
1.00
0.236
5.00
-0.26
0.00
BC
5.0
4.0
5.0
0.58
0.118
4.67
-0.38
-0.12
BG
3.0
2.0
3.0
0.58
0.118
2.67
-1.07
-0.81
BH
7.0
7.0
8.0
0.58
0.118
7.33
0.54
0.81
BI
5.0
4.0
4.0
0.58
0.118
4.33
-0.50
-0.23
BK
6.0
6.0
6.0
0.00
0.000
6.00
0.08
0.35
BL
4.0
4.0
5.0
0.58
0.118
4.33
-0.50
-0.23
BM
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
BN
5.0
7.0
7.0
1.15
0.236
6.33
0.20
0.46
BO
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
BW
5.0
7.0
6.0
1.00
0.236
6.00
0.08
0.35
C
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
CA
6.0
7.0
5.0
1.00
0.236
6.00
0.08
0.35
CC
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
CE
5.0
6.0
6.0
0.58
0.118
5.67
-0.03
0.23
CG
10.0
9.0
9.0
0.58
0.118
9.33
1.24
1.50
CJ
7.0
7.0
6.0
0.58
0.118
6.67
0.31
0.58
CK
5.0
5.0
6.0
0.58
0.118
5.33
-0.15
0.12
CM
8.0
10.0
8.0
1.15
0.236
8.67
1.01
1.27
CO
7.0
9.0
7.0
1.15
0.236
7.67
0.66
0.92
CP
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
CQ
6.0
6.0
7.0
0.58
0.118
6.33
0.20
0.46
CS
6.0
5.0
6.0
0.58
0.118
5.67
-0.03
0.23
'
17;0
16.01
16:0
0,58
0.118
16.33
3.66
3.93 x
D
5.0
5.0
6.0
0.58
0.118
5.33
-0.15
0.12
DD
5.0
6.0
6.0
0.58
0.118
5.67
-0.03
0.23
DE
8.0
8.0
8.0
0.00
0.000
8.00
0.77
1.04
DG
8.0
7.0
13.0
3.21
0.709
9.33
1.24
1.50
DH
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
DJ
imo
1387$
13960
29172
11J471
140JMJ0
485)75
486.01 x
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
(f—
$
ill
Insufficient data
X 5
Determined to be an outlier
il = Below control limit
o
-------
EMSL-LV Intel-comparison Study: Gamma in Water, ll-Jun-1993 37/50
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
N
Normalized deviation
(grand-avg) (known) Tag
DL
6.0
5.0
5.0
0.58
0.118
5.33
-0.15
0.12
DM
5.0
6.0
7.0
1.00
0.236
6.00
0.08
0.35
DO
•
DR
«
DT
4.0
2.0
8.0
3.06
0.709
4.67
-0.38
-0.12
m
•
DZ
6.0
6.0
6.0
0.00
0.000
6.00
0.08
0.35
E
5.0
7.0
6.0
1.00
0.236
6.00
0.08
0.35
EA
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
EB
6.0
6.0
6.0
0.00
0.000
6.00
0.08
0.35
EH
4.0
6.0
5.0
1.00
0.236
5.00
-0.26
0.00
EL
•
EN
•
EW
8.0
10.0
11.0
1.53
0.354
9.67
1.35
1.62
EX
5.0
8.0
14.0
4.58
1.120
9.00
1.12
1.39
EZ
9.0
12.0
10.0
1.53
0.354
10.33
1.58
1.85
FE
5.0
7.0
5.0
1.15
0.236
5.67
-0.03
0.23
FJ
5.0
5.0
4.0
0.58
0.118
4.67
-0.38
-0.12
FK
5:0
0
FL
5.0
5.0
6.0
0.58
0.118
5.33
-0.15
0.12
FU
4.0
5.0
6.0
1.00
0.236
5.00
-0.26
0.00
FZ
6.0
6.0
4.0
1.15
0.236
5.33
-0.15
0.12
GE
6.0
5.0
5.0
0.58
0.118
5.33
-0.15
0.12
GI
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
GL
7.0
5.0
7.0
1.15
0.236
6.33
0.20
0.46
GO
•
HE
•
HI
4.0
8.0
5.0
2.08
0.473
5.67
-0.03
0.23
HJ
10.0
8.0
10.0
1.15
0.236
9.33
1.24
1.50
HK
5.0
6.0
5.0
0.58
0.118
5.33
-0.15
0.12
HL
7.0
7.0
7.0
0.00
0.000
7.00
0.43
0.69
HP
10.0
9.0
9.0
0.58
0.118
9.33
1.24
1.50
HU
7.0
7.0
7.0
0.00
0.000
7.00
0.43
0.69
I
7.0
7.0
5.0
1.15
0.236
6.33
0.20
0.46
IA
*
IC
n*
6.0
5.0
5.0
0.58
0.118
5.33
-0.15
0.12
IU
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
•
J
5.0
6.0
5.0
0.58
0.118
5.33
-0.15
0.12
JE
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
JI
7.0
5.0
8.0
1.53
0.354
6.67
0.31
0.58
JR
8.0
6.0
6.0
1.15
0.236
6.67
0.31
0.58
JS
5.0
6.0
5.0
0.58
0.118
5.33
-0.15
0.12
JY
7.0
5.0
8.0
1.53
0.354
6.67
0.31
0.58
K
6.0
9.0
7.0
1.53
0.354
7.33
0.54
0.81
• =
0^
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
•II = Below control limit
-------
/f=
38 / 50 EMSL-LV Intercomparison Study
: Gamma in Water,
ll-Jun-1993
Cesium-137
'V
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
KF
©
KH
5.0
7.0
8.0
1.53
0.354
6.67
0.31
0.58
KL
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
KM
4.0
6.0
5.0
1.00
0.236
5.00
-0.26
0.00
KX
6.0
8.0
6.0
1.15
0.236
6.67
0.31
0.58
L
4.0
5.0
5.0
0.58
0.118
4.67
-0.38
-0.12
LA
LE
11.0
5.0
4.0
3.79
0.827
6.67
0.31
0.58
LF
5.0
8.0
6.0
1.53
0.354
6.33
0.20
0.46
LM
LR
1.0
10.0
10.0
5.20
1.120
7.00
0.43
0.69
LT
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
M
5.0
6.0
5.0
0.58
0.118
5.33
-0.15
0.12
MA
4.0
6.0
5.0
1.00
0.236
5.00
-0.26
0.00
ML
33.0
440
59.0
13.05
4.946
45133
13,71
13.97
X
MN
•
MP
5.0
5.0
6.0
0.58
0.118
5.33
-0.15
0.12
MQ
6.0
12.0
8.0
3.06
0.709
8.67
1.01
1.27
MS
6.0
6.0
8.0
1.15
0.236
6.67
0.31
0.58
MT
*
MV
6.0
5.0
5.0
0.58
0.118
5.33
-0.15
0.12
MY
:•
N
6.0
6.0
5.0
0.58
0.118
5.67
-0.03
0.23
NB
7.0
5.0
6.0
1.00
0.236
6.00
0.08
0.35
NH
6.0
5.0
5.0
0.58
0.118
5.33
-0.15
0.12
NI
6.0
5.0
64<0
33.78
12.371
25.00
6;66
6;93
X
NJ
10.0
8.0
9.0
1.00
0.236
9.00
1.12
1.39
NK
4.0
3.0
4.0
0.58
0.118
3.67
-0.73
-0.46
NP
5.0
7.0
7.0
1.15
0.236
6.33
0.20
0.46
NZ
0
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
OA
OB
6.0
4.0
5.0
1.00
0.236
5.00
-0.26
0.00
OK
4.0
4.0
5.0
0.58
0.118
4.33
-0.50
-0.23
Oli
•
OM
16.0
IBjO
16.0
0.58
0.118
15:33
3.31
3.58;
*
OT
-•
OZ
¦'*
PB
5.0
4.0
5.0
0.58
0.118
4.67
-0.38
-0.12
PC
6.0
6.0
5.0
0.58
0.118
5.67
-0.03
0.23
PD
8.0
6.0
9.0
1.53
0.354
7.67
0.66
0.92
PE
7.0
7.0
10.0
1.73
0.354
8.00
0.77
1.04
PI
6.0
6.0
6.0
0.00
0.000
6.00
0.08
0.35
PM
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
PP
7.0
7.0
7.0
0.00
0.000
7.00
0.43
0.69
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 H
Insufficient data
x =
Determined to be an outlier
U = Below control limit
4
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-cJun-1993
VI
39/50
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PQ
5.0
4.0
5.0
0.58
0.118
4.67
-0.38
-0.12
PT
4.0
6.0
6.0
1.15
0.236
5.33
-0.15
0.12
PU
PV
4.0
6.0
8.0
2.00
0.473
6.00
0.08
0.35
PW
•
PX
6.0
4.0
5.0
1.00
0.236
5.00
-0.26
0.00
PY
•
Q
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
QB
6.0
7.0
4.0
1.53
0.354
5.67
-0.03
0.23
QJ
QK
6.0
6.0
5.0
0.58
0.118
5.67
-0.03
0.23
QL
•
QM
6.0
6.0
6.0
0.00
0.000
6.00
0.08
0.35
QP
•
QQ
•
QT
8.0
8.0
8.0
0.00
0.000
8.00
0.77
1.04
QU
4.0
3.0
4.0
0.58
0.118
3.67
-0.73
-0.46
ox
7.0
6.0
7.0
0.58
0.118
6.67
0.31
0.58
QZ
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
R
5.0
4.0
5.0
0.58
0.118
4.67
-0.38
-0.12
RC
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
RF
4.0
4.0
4.0
0.00
0.000
4.00
-0.61
-0.35
RH
•
RK
6.0
5.0
7.0
1.00
0.236
6.00
0.08
0.35
RL
4.0
4.0
4.0
0.00
0.000
4.00
-0.61
-0.35
RM
6.0
5.0
5.0
0.58
0.118
5.33
-0.15
0.12
RO
5.0
4.0
7.0
1.53
0.354
5.33
-0.15
0.12
m
•
RR
6.0
6.0
7.0
0.58
0.118
6.33
0.20
0.46
RV
4.0
2.0
4.0
1.15
0.236
3.33
-0.84
-0.58
RX
1.0
1.0
1.0
0.00
0.000
1.00
-1.65
-1.39
RZ
4.0
4.0
4.0
0.00
0.000
4.00
-0.61
-0.35
S
5.0
6.0
6.0
0.58
0.118
5.67
-0.03
0.23
SA
*
sc
6.0
5.0
6.0
0.58
0.118
5.67
-0.03
0.23
SD
6.0
5.0
5.0
0.58
0.118
5.33
-0.15
0.12
SF
2.0
2.0
2.0
0.00
0.000
2.00
-1.30
-1.04
SI
7.0
7.0
5.0
1.15
0.236
6.33
0.20
0.46
SK
10.0
10.0
10.0
0.00
0.000
10.00
1.47
1.73
SM
7.0
6.0
5.0
1.00
0.236
6.00
0.08
0.35
SN
•
SR
8.0
5.0
7.0
1.53
0.354
6.67
0.31
0.58
SS
4.0
7.0
5.0
1.53
0.354
5.33
-0.15
0.12
ST
4.0
5.0
4.0
0.58
0.118
4.33
-0.50
-0.23
sir
• = No data submitted TAG SYMBOLS ft = Above control limit
L 0 = Insufficient data x = Determined to be an outlier 11 = Below, control limit
-------
40/50
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SV
6.0
8.0
9.0
1.53
0.354
7.67
0.66
0.92
SW
5.0
6.0
5.0
0.58
0.118
5.33
-0.15
0.12
sz
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
T
5.0
4.0
5.0
0.58
0.118
4.67
-0.38
-0.12
TA
4.0
6.0
5.0
1.00
0.236
5.00
-0.26
0.00
TB
7.0
6.0
6.0
0.58
0.118
6.33
0.20
0.46
TD
7.0
5.0
6.0
1.00
0.236
6.00
0.08
0.35
TB
TG
8.0
7.0
7.0
0.58
0.118
7.33
0.54
0.81
TH
6.0
5.0
6.0
0.58
0.118
5.67
-0.03
0.23
TI
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
TK
4.0
3.0
5.0
1.00
0.236
4.00
-0.61
-0.35
TL
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
TO
7.0
5.0
6.0
1.00
0.236
6.00
0.08
0.35
TQ
5.0
4.0
5.0
0.58
0.118
4.67
-0.38
-0.12
m
•
rs
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
rr
•
TU
4.U
6.0
5.0
1.00
0.236
5.00
-0.26
0.00
TV
6.0
4.0
5.0
1.00
0.236
5.00
-0.26
0.00
TW
»
U
5.U
4.0
5.0
0.58
0.118
4.67
-0.38
-0.12
UB
I7C
UE
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
UI
m
UK
5.0
1.0
1.0
2.31
0.473
2.33
-1.19
-0.92
UM
. •
UN
6.0
4.0
6.0
1.15
0.236
5.33
-0.15
0.12
UP
6.0
6.0
6.0
0.00
0.000
6.00
0.08
0.35
;UR
•
UT
8.0
4.0
12.0
4.00
0.945
8.00
0.77
1.04
UV
5.0
7.0
7.0
1.15
0.236
6.33
0.20
0.46
UW
5.0
5.0
6.0
0.58
0.118
5.33
-0.15
0.12
W
6.0
4.0
5.0
1.00
0.236
5.00
-0.26
0.00
X
4.0
6.0
5.0
1.00
0.236
5.00
-0.26
0.00
Y
5.0
5.0
5.0
0.00
0.000
5.00
-0.26
0.00
Z
5.0
6.0
5.0
0.58
0.118
5.33
-0.15
0.12
Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
1.00
RX
2.67
BG
4.00
TK
2.00
SF
3.33
RV
4.00
RZ
2.00
AW
3.67
QU
4.00
RL
2.33
UK
3.67
NK
4.00
RF
• = No data submitted
TAG SYMBOLS
IT
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
U
= Below control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
41/50
Cesium-137
Data sorted by Laboratory Average
Average
Taj?
Lab
Average
Tag
Lab
Average
Tag
Lab
4.33
ST
5.00
CP
5.67
AP
4.33
OK
5.00
cc
5.67
AL
4.33
BL
5.00
c
5.67
AE
4.33
BI
5.00
BO
6.00
UP
4.67
U
5.00
BM
6.00
TO
4.67
TQ
5.00
BB
6.00
TD
4.67
T
5.00
AI
6.00
SM
4.67
R
5.33
Z
6.00
RK
4.67
PQ
5.33
UW
6.00
QM
4.67
PB
5.33
UN
6.00
PV
4.67
L
5.33
sw
6.00
PI
4.67
FJ
5.33
ss
6.00
NB
4.67
DT
5.33
SD
6.00
EB
4.67
BC
5.33
RO
6.00
E
4.67
AF
5.33
RM
6.00
DZ
5.00
Y
5.33
PT
6.00
DM
5.00
X
5.33
NH
6.00
CA
5.00
W
5.33
MV
6.00
BW
5.00
UE
5.33
MP
6.00
BK
5.00
TV
5.33
M
6.00
AN
5.00
TU
5.33
JS
6.33
UV
5.00
TS
5.33
J
6.33
TB
5.00
TL
5.33
IC
6.33
SI
5.00
TI
5.33
HK
6.33
RR
5.00
TA
5.33
GE
6.33
NP
5.00
SZ
5.33
FZ
6.33
LF
5.00
RC
5.33
FL
6.33
I
5.00
QZ
5.33
DL
6.33
GL
5.00
Q
5.33
D
6.33
CQ
5.00
PX
5.33
CK
6.33
BN
5.00
PM
5.33
AK
6.33
AU
5.00
OB
5.33
A
6.33
AJ
5.00
O
5.67
TH
6.67
SR
5.00
MA
5.67
SC
6.67
QX
5.00
LT
5.67
S
6.67
MS
5.00
KM
5.67
QK
6.67
LE
5.00
KL
5.67
QB
6.67
KX
5.00
JE
5.67
PC
6.67
KH
5.00
IU
5.67
N
6.67
JY
5.00
GI
5.67
HI
6.67
cJR
5.00
FU
5.67
FE
6.67
JI
5.00
EH
5.67
DD
6.67
CJ
5.00
EA
5.67
CS
7.00
PP
5.00
DH
5.67
CE
7.00
TiR
• s No data submitted
TAG SYMBOLS
It
s Above control limit
0 s Insufficient data
x = Determined to be an outlier
= Below-control limit
-------
42/50
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Cesium-137
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab
Average
Tag
Lab
7.00
7.00
7.00
7.33
7.33
7.33
7.67
7.67
7.67
8.00
% responding labs
HU
HL
BA
TG
K
BH
SV
PD
CO
UT
8.00 QT
8.00 PE
8.00 DE
8.33 AZ
8.67 MQ
8.67 CM
8.67 AA
9.00 NJ
9.00 EX
9.33 HP
Frequency distribution
9.33
9.33
9.33
9.67
10.00
10.33
15.33
16.33
25.00
45.33
1408.00
x
x
X
X
X
HJ
DG
CG
EW
SK
EZ
OM
CX
NI
ML
DJ
20-
10-
-r-
-2
—¥
lb
Ml
+2
+4
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data ^Determined to bean^utUer JJ- =_J?elow_ control limit
-------
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/i 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 / NV
* .
5(2.3 %) Out of control *
15(6.9 %) In warning zone
but not an outlier
"t 11
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
30(17.2 %) Between 1 and 2 norm. S.D.
-------
f- ———
44 / 50 EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
^
Barium-133
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
96.0
100.0
100.0
2.31
0.236
98.67
0.33
-0.06
AA
87.0
91.0
89.0
2.00
0.236
89.00
-1.34
-1.73
AE
87.0
93.0
84.0
4.58
0.532
88.00
-1.51
-1.91
AF
97.0
95.0
99.0
2.00
0.236
97.00
0.04
-0.35
AI
97.0
96.0
94.0
1.53
0.177
95.67
-0.19
-0.58
AJ
109.0
107.0
108.0
1.00
0.118
108.00
1.95
1.56
AK
96.0
97.0
95.0
1.00
0.118
96.00
-0.13
-0.52
AL
105.0
106.0
102.0
2.08
0.236
104.33
1.31
0.92
AN
105.0
103.0
104.0
1.00
0.118
104.00
1.26
0.87
AP
90.0
88.0
87.0
1.53
0.177
88.33
-1.46
-1.85
AU
92.0
99.0
93.0
3.79
0.413
94.67
-0.36
-0.75
AW
102.0
99.0
103.0
2.08
0.236
101.33
0.79
0.40
AY
>
AZ
102.0
92.0
99.0
5.13
0.591
97.67
0.16
-0.23
BA
98.0
100.0
97.0
1.53
0.177
98.33
0.28
-0.12
BB
90.0
90.0
90.0
0.00
0.000
90.00
-1.17
-1.56
BC
86.0
87.0
86.0
0.58
0.059
86.33
-1.80
-2.19
BG
46.0
47.0
47.0
0.58
0.059
46.67
-8;67
-9.06 *
BH
96.0
102.0
100.0
3.06
0.354
99.33
0.45
0.06
BI
83.0
84.0
90.0
3.79
0.413
85.67
-1.92
-2.31
BK
100.0
98.0
98.0
1.15
0.118
98.67
0.33
-0.06
BL
100.0
98.0
102.0
2.00
0.236
100.00
0.56
0.17
BM
98.0
100.0
100.0
1.15
0.118
99.33
0.45
0.06
BN
94.0
98.0
95.0
2.08
0.236
95.67
-0.19
-0.58
BO
96.0
88.0
96.0
4.62
0.473
93.33
-0.59
-0.98
BW
C
100.0
99.0
94.0
3.21
0.354
97.67
0.16
-0.23
CA
106.0
103.0
96.0
5.13
0.591
101.67
0.85
0.46
CC
104.0
105.0
105.0
0.58
0.059
104.67
1.37
0.98
CE
105.0
102.0
91.0
7.37
0.827
99.33
0.45
0.06
CO
CJ
100.0
115.0
98.0
9.29
1.008
104.33
1.31
0.92
CK
90.0
89.0
88.0
1.00
0.118
89.00
-1.34
-1.73
CM
129.0
144i0
16110
11.24
1570
141.33
7.72
7.33 x
CO
106.0
99.0
97.0
4.73
0.532
100.67
0.68
0.29
CP
103.0
104.0
102.0
1.00
0.118
103.00
1.08
0.69
CQ
106.0
105.0
104.0
1.00
0.118
105.00
1.43
1.04
CS
89.0
91.0
88.0
1.53
0.177
89.33
-1.28
-1.67
CX
95.0
95.0
94.0
0.58
0.059
94.67
-0.36
-0.75
D
94.0
92.0
96.0
2.00
0.236
94.00
-0.48
-0.87
DD
101.0
103.0
105.0
2.00
0.236
103.00
1.08
0.69
DE
95.0
95.0
96.0
0.58
0.059
95.33
-0.24
-0.64
DG
89.0
89.0
90.0
0.58
0.059
89.33
-1.28
-1.67
DH
106.0
106.0
108.0
1.15
0.118
106.67
1.72
1.33
DJ
33:0
3110
22 ft
5:86
0.65C
28.67
-11;79
^12.18 x
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U = Below control limit
sj
-------
r
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993 45/50
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
DR
-•
DT
101.0
99.0
105.0
3.06
0.354
101.67
0.85
0.46
DT
•
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
»
130;0
116.0
7.57
0.827
124167
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
F»
105'i0
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
15:0
160
11.0
2.65
0295
14.00
.14.33
-14:72 X
BEE
- •
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
mm
134.0
16.00
2.6&5
134V00
em
61O6 x
HU
77.0
76.0
76.0
0.58
0.059
76.33
-3.54
-3.93 H
I
100.0
99.0
98.0
1.00
0.118
99.00
0.39
0.00
IA
•
IC
n
107.0
98.0
99.0
4.93
0.532
101.33
0.79
0.40
u.
ru
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
JE
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
-------
46/50
EMSL-LV Intercomparison Study
Gamma in Water,
ll-Jun-1993
Barium-133
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
KF
KB
99.0
102.0
102.0
1.73
0.177
101.00
0.74
0.35
KL
103.0
102.0
101.0
1.00
0.118
102.00
0.91
0.52
KM
91.0
90.0
90.0
0.58
0.059
90.33
-1.11
-1.50
KX
97.0
92.0
94.0
2.52
0.295
94.33
-0.42
-0.81
L
88.0
90.0
87.0
1.53
0.177
88.33
-1.46
-1.85
LA
•
LE
88.0
89.0
88.0
0.58
0.059
88.33
-1.46
-1.85
LF
94.0
95.0
97.0
1.53
0.177
95.33
-0.24
-0.64
LM
•
LR
116.0
114.0
124.0
5.29
0.591
118.00
3.68
3.29
It
LT
100.0
100.0
100.0
0.00
0.000
100.00
0.56
0.17
M
94.0
96.0
93.0
1.53
0.177
94.33
-0.42
-0.81
MA
97.0
96.0
95.0
1.00
0.118
96.00
-0.13
-0.52
ML
92.0
102.0
90.0
6.43
0.709
94.67
-0.36
-0.75
MN
•
MP
93.0
97.0
99.0
3.06
0.354
96.33
-0.07
-0.46
MQ
96.0
101.0
98.0
2.52
0.295
98.33
0.28
-0.12
MS
99.0
99.0
105.0
3.46
0.354
101.00
0.74
0.35
MT
•
MV
97.0
94.0
94.0
1.73
0.177
95.00
-0.30
-0.69
MY
•
N
100.0
104.0
96.0
4.00
0.473
100.00
0.56
0.17
NB
78.0
75.0
100.0
13.65
1.908
84.33
-2.15
-2.54
NH
108.0
108.0
109.0
0.58
0.059
108.33
2.01
1.62
NI
75.0
86.0
84.0
5.86
0.650
81.67
-2.61
-3.00
NJ
96.0
90.0
92.0
3.06
0.354
92.67
-0.71
-1.10
NK
109.0
107.0
96.0
7.00
0.768
104.00
1.26
0.87
NP
83.0
89.0
91.0
4.16
0.473
87.67
-1.57
-1.96
NZ
71.0
68;0
V3.0
•2.52
0.295
70,67
-4.62
r4.9l
O
99.0
100.0
100.0
0.58
0.059
99.67
0.51
0.12
OA
*
OB
#;
OK
127.0
1230
126:0
2.00
0.236
126.00
4.89
4.50
OL
•
OM
79.0
80.0
83.0
2.08
0.236
80.67
-2.78
-3.18
OT
•
oz
•
PB
89.0
88.0
90.0
1.00
0.118
89.00
-1.34
-1.73
PC
107.0
104.0
91.0
8.50
0.945
100.67
0.68
0.29
PD
102.0
101.0
104.0
1.53
0.177
102.33
0.97
0.58
PE
57i0
69i0
5&0
1.53
0.177
57i33
-6;83
-7.22
X
PI
115.0
115.0
116.0
0.58
0.059
115.33
3.22
2.83
PM
•
PP
105.0
101.0
104.0
2.08
0.236
103.33
1.14
0.75
• = No data submitted TAG SYMBOLS IT = Above control limit
[0s Insufficient data x s Determined to be an outlier 11 Below control limit
-------
(f
EMSL-LV Intercomparison Study: Gamma in Water, 11-Jim-1993
^
47/50
Barium-133
>
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PQ
104.0
96.0
108.0
6.11
0.709
102.67
1.03
0.64
PT
97.0
95.0
104.0
4.73
0.532
98.67
0.33
-0.06
PU
•
PV
93.0
93.0
93.0
0.00
0.000
93.00
-0.65
-1.04
PW
•
PX
97.0
97.0
98.0
0.58
0.059
97.33
0.10
-0.29
FY
•
Q
87.0
87.0
91.0
2.31
0.236
88.33
-1.46
-1.85
QB
97.0
97.0
103.0
3.46
0.354
99.00
0.39
0.00
QJ
97.0
92.0
99.0
3.61
0.413
96.00
-0.13
-0.52
QK
94.0
101.0
97.0
3.51
0.413
97.33
0.10
-0.29
QL
OM
95.0
94.0
96.0
1.00
0.118
95.00
-0.30
-0.69
QP
' •
QQ
. •
QT
97.0
98.0
96.0
1.00
0.118
97.00
0.04
-0.35
QU
86.0
88.0
84.0
2.00
0.236
86.00
-1.86
-2.25
QX
121.0
121.0
117.0
2.31
0.236
119.67
3.97
3.58
1t
QZ
104.0
96.0
103.0
4.36
0.473
101.00
0.74
0.35
R
95.0
95.0
96.0
0.58
0.059
95.33
-0.24
-0.64
RC
85.0
84.0
86.0
1.00
0.118
85.00
-2.03
-2.42
RF
91.0
92.0
95.0
2.08
0.236
92.67
-0.71
-1.10
KH
•
RK
89.0
90.0
88.0
1.00
0.118
89.00
-1.34
-1.73
RL
81.0
81.0
81.0
0.00
0.000
81.00
-2.73
-3.12
RM
99.0
97.0
99.0
1.15
0.118
98.33
0.28
-0.12
RO
105.0
105.0
104.0
0.58
0.059
104.67
1.37
0.98
RQ
•
RR
98.0
102.0
100.0
2.00
0.236
100.00
0.56
0.17
RV
102.0
103.0
103.0
0.58
0.059
102.67
1.03
0.64
RX
48.0
54.0
60.0
6;00
0.709
54.00
-7:40
-7i79
X
RZ
100.0
101.0
102.0
1.00
0.118
101.00
0.74
0.35
S
99.0
99.0
98.0
0.58
0.059
98.67
0.33
-0.06
SA
•
sc
90.0
94.0
96.0
3.06
0.354
93.33
-0.59
-0.98
SD
94.0
79.0
88.0
7.55
0.886
87.00
-1.69
-2.08
SF
41*0
41.0
40.0
0.58
0.059
40.67
-9,71
10,10
<
SI
96.0
104.0
100.0
4.00
0.473
100.00
0.56
0.17
SK
96.0
96.0
96.0
0.00
0.000
96.00
-0.13
-0.52
SM
96.0
100.0
98.0
2.00
0.236
98.00
0.22
-0.17
SI*
*
SR
87.0
92.0
99.0
6.03
0.709
92.67
-0.71
-1.10
ss
102.0
107.0
103.0
2.65
0.295
104.00
1.26
0.87
ST
98.0
96.0
94.0
2.00
0.236
96.00
-0.13
-0.52
sti
•
• =
No data submitted
TAG SYMBOLS
It = Above control limit
in
Q
Insufficient data
x =
Determined to be an outlier
U = Below control limit
->j
-------
48/50
EMSL-LV Intercomparison Study: Gamma in Water, ll-Jun-1993
Barium-133
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SV
100.0
102.0
108.0
4.16
0.473
103.33
1.14
0.75
sw
102.0
104.0
103.0
1.00
0.118
103.00
1.08
0.69
sz
94.0
95.0
95.0
0.58
0.059
94.67
-0.36
-0.75
T
101.0
98.0
98.0
1.73
0.177
99.00
0.39
0.00
TA
99.0
99.0
97.0
1.15
0.118
98.33
0.28
-0.12
TB
109.0
112.0
106.0
3.00
0.354
109.00
2.12
1.73
TD
95.0
94.0
95.0
0.58
0.059
94.67
-0.36
-0.75
TE
' •
TG
87.0
89.0
86.0
1.53
0.177
87.33
-1.63
-2.02
TH
98.0
104.0
98.0
3.46
0.354
100.00
0.56
0.17
TI
92.0
86.0
97.0
5.51
0.650
91.67
-0.88
-1.27
TK
97.0
105.0
90.0
7.51
0.886
97.33
0.10
-0.29
TL
51.0
49.0
47;0
2.00
0.236
49.00
~8;27
-8.66 x
TO
75.0
102.0
100.0
15.04
2.133
92.33
-0.76
-1.15
TQ
86.0
86.0
87.0
0.58
0.059
86.33
-1.80
-2.19
TR
«
TS
113.0
114.0
104.0
5.51
0.591
110.33
2.35
1.96
TT
TU
84.0
84.0
84.0
0.00
0.000
84.00
-2.21
-2.60
TV
113.0
78.0
94.0
17.52
3.033
95.00
-0.30
-0.69
new.
•
u
91.0
94.0
101.0
5.13
0.591
95.33
-0.24
-0.64
UB
•
UG
UE
107.0
105.0
106.0
1.00
0.118
106.00
1.60
1.21
UI
UK
100.0
103.0
105.0
2.52
0.295
102.67
1.03
0.64
tM
UN
93.0
92.0
87.0
3.21
0.354
90.67
-1.05
-1.44
UP
108.0
113.0
115.0
3.61
0.413
112.00
2.64
2.25
UR
•
UT
•
UV
89.0
87.0
86.0
1.53
0.177
87.33
-1.63
-2.02
UW
101.0
101.0
96.0
2.89
0.295
99.33
0.45
0.06
W
93.0
96.0
95.0
1.53
0.177
94.67
-0.36
-0.75
X
94.0
91.0
90.0
2.08
0.236
91.67
-0.88
-1.27
Y
95.0
92.0
94.0
1.53
0.177
93.67
-0.53
-0.92
Z
103.0
100.0
102.0
1.53
0.177 101.67
ma&rxazmrmBxvvrmiaa
0.85
0.46
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
14.00
X
GO
49.00
X
TL
76.33
HU
28.67
X
DJ
54.00
X
RX
80.67
OM
40.67
X
SF
57.33
X
PE
81.00
li
RL
46.67
X
BG
70.67
X
NZ
81.67
NI
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
•li = Below control limit
-------
f(
^
k-
EMSL-LV Lntercomparison Study: Gamma in Water, ll-Jun-1993
49/50
Barium-133
¦>
Data sorted by Laboratory Averaj
fe
Average
Tag
Lab
Average Tag
Lab
Average
Tag
Lab
84.00
TU
94.67
W
98.33
RM
84.00
JR
94.67
TD
98.33
MQ
84.00
DZ
94.67
SZ
98.33
J
84.33
NB
94.67
ML
98.33
FU
85.00
RC
94.67
CX
98.33
BA
85.67
Bt
94.67
AU
98.67
S
86.00
QU
95.00
TV
98.67
PT
86.33
TQ
95.00
QM
98.67
BK
86.33
BC
95.00
MV
98.67
A
87.00
SD
95.33
U
99.00
T
87.33
UV
95.33
R
99.00
QB
87.33
TG
95.33
LF
99.00
1
87.67
NP
95.33
GE
99.00
HL
88.00
AE
95.33
EH
99.33
UW
88.33
Q
95.33
DL
99.33
CE
88.33
LE
95.33
DE
99.33
BM
88.33
L
95.67
FJ
99.33
BH
88.33
AP
95.67
DO
99.67
O
89.00
RK
95.67
BN
100.00
TH
89.00
PB
95.67
AI
100.00
SI
89.00
CK
96.00
ST
100.00
RR
89.00
AA
96.00
SK
100.00
N
89.33
DG
96.00
QJ
100.00
LT
89.33
CS
96.00
MA
100.00
HJ
90.00
BB
96.00
m
100.00
GL
90.33
KM
96.00
GI
100.00
EZ
90.67
UN
96.00
E
100.00
BL
91.67
X
96.00
AK
100.67
PC
91.67
n
96.33
MP
100.67
CO
91.67
K
96.67
IU
101.00
RZ
92.33
TO
97.00
QT
101.00
QZ
92.67
SR
97.00
FZ
101.00
MS
92.67
RF
97.00
FE
101.00
KH
92.67
NJ
97.00
AF
101.33
IC
93.00
FV
97.33
TK
101.33
FL
93.33
SC
97.33
QK
101.33
AW
93.33
HK
97.33
PX
101.67
Z
93.33
BO
97.33
JS
101.67
DT
93.67
Y
97.67
JI
101.67
CA
93.67
JE
97.67
C
102.00
KL
94.00
D
97.67
AZ
102.00
DM
94.33
M
98.00
SM
102.33
PD
94.33
KX
98.00
EA
102.67
UK
94.33
EX
98.33
TA
102.67
RV
• = No data submitted
TAG SYMBOLS
ft
s Above control limit
0 s Insufficient data
x = Determined to be an outlier
s Below control limit
: y
-------
50/50
EMSL-LVIntercomparison Study: Gamma in Water, ll-Jun-1993
Barium-133
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab
Average
Tag
Lab
102.67
103.00
103.00
103.00
103.00
103.33
103.33
104.00
104.00
104.00
responding labs
PQ
sw
EB
DD
CP
sv
pp
ss
NK
AN
104.33 CJ
104.33 AL
104.67 RO
104.67 JY
104.67 CC
105.00 CQ
106.00 UE
106.67 DH
108.00 AJ
108.33 NH
Frequency distribution
109.00
110.33
112.00
115.33
118.00
119.67
124.67
125.00
134.00
141.33
ft
ft
X
X
X
X
TB
TS
UP
PI
LR
QX
EW
OK
HP
CM
-2 0 +2
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
10-
-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
•U = Below control limit
-------
United States Environmental Monitoring EPA 600/R-93/216
Environmental Protection Systems Laboratory November 1993
Agency P.O. Box 93478
Las Vegas NV 89193-3478
Research and Development
Strontium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the July 16,1993 Data
-------
Strontium in Water
Performance Evaluation Study
July 16, 1993
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 16, 1993.
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, 16-Jul-1993 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.
-------
f,
2/14 EMSL-LV Performance Evaluation: Strontium in Water, 16-JuI-1993
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater them or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
\v
-------
EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993 3/14
Strontium-89
Statistical Summary
131 Participfints
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
31 (23.7 %) Failed to respond •.
5(3.8 %) Outliers •'
15(11.5 %) Out of control '
but not an outlier
Statistic
. 69(52.7 %) Within all limits
Respondents
11 (8.4 %) In warning zone
but within control
Non-outliers
Mean
35.03
Grand Avg 34.20
Std. Dev.
11.09
6.66
Variance
123.07
44.40
% Coef. of Var.
31.67
19.48
% deviation of mean from known value
3.04
0.60
Norm. dev. of mean from known value
0.09
0.03
Median
33.83
33.67
% deviation of median from known value
-0.49
-0.98
Norm. dev. of median from known value
-0.02
-0.05
22(22.0 %) More than 3 norm. S.D.;
9(9.0 %) Between 2 and 3 norm. S.D. •
. 35(35.0 %) Within 1 norm. S.D.
of known value
34(34.0 %) Between 1 and 2 norm. S.D.
-------
Cf —
4/14 EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993
Strontium-89
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
35.0
36.0
35.0
0.58
0.118
35.33
0.39
0.46
AE
34.0
34.0
33.0
0.58
0.118
33.67
-0.19
-0.12
AF
33.0
35.0
33.0
1.15
0.236
33.67
-0.19
-0.12
AI
•
AJ
38.0
44.0
46.0
4.16
0.945
42.67
2.93
3.00
AK
35.0
37.0
34.0
1.53
0.354
35.33
0.39
0.46
AL
33.0
32.0
37.0
2.65
0.591
34.00
-0.07
0.00
AU
41.0
40.0
45.0
2.65
0.591
42.00
2.70
2.77
AW
29.0
29.0
31.0
1.15
0.236
29.67
-1.57
-1.50
AY
•
AZ
29.0
34.0
39.0
5.00
1.345
34.00
-0.07
0.00
BA
36.0
36.0
33.0
1.73
0.354
35.00
0.28
0.35
BB
' •
BC
33.0
35.0
33.0
1.15
0.236
33.67
-0.19
-0.12
BG
•
BH
41.0
39.0
40.0
1.00
0.236
40.00
2.01
2.08
BL
33.0
33.0
29.0
2.31
0.473
31.67
-0.88
-0.81
BM
40.0
39.0
33.0
3.79
0.827
37.33
1.08
1.15
BO
35.0
35.0
35.0
0.00
0.000
35.00
0.28
0.35
C
33.0
32.0
32.0
0.58
0.118
32.33
-0.65
-0.58
CA
27.0
27.0
31.0
2.31
0.473
28.33
-2.03
-1.96
CE
•
CG
5.0
7.0
8.0
1.53
0.354
6.67
-9.54
-9.47
X
CJ
32.0
29.0
34.0
2.52
0.591
31.67
-0.88
-0.81
CK
38.0
38.0
41.0
1.73
0.354
39.00
1.66
1.73
CO
45.0
34.0
32.0
7.00
2.020
37.00
0.97
1.04
CP
9
CQ
30.0
28.0
30.0
1.15
0.236
29.33
-1.69
-1.62
CS
38.0
40.0
40.0
1.15
0.236
39.33
1.78
1.85
CX
36.0
37.0
38.0
1.00
0.236
37.00
0.97
1.04
D
39.0
36.0
37.0
1.53
0.354
37.33
1.08
1.15
DD
36.0
33.0
36.0
1.73
0.354
35.00
0.28
0.35
DE
30.0
30.0
31.0
0.58
0.118
30.33
-1.34
-1.27
DG
62.0
53.0
45.0
8.50
2.921
53.33
6.63
6.70
If
DO
37.0
28.0
37.0
5.20
1.120
34.00
-0.07
0.00
DT
27.0
30.0
32.0
2.52
0.591
29.67
-1.57
-1.50
DZ
34.0
33.0
33.0
0.58
0.118
33.33
-0.30
-0.23
E
29.0
31.0
27.0
2.00
0.473
29.00
-1.80
-1.73
EB
33.0
37.0
40.0
3.51
0.827
36.67
0.85
0.92
EH
31.0
34.0
29.0
2.52
0.591
31.33
-0.99
-0.92
EL
•
FE
39.0
37.0
39.0
1.15
0.236
38.33
1.43
1.50
FU
38.0
38.0
39.0
0.58
0.118
38.33
1.43
1.50
GG
e
HK
30.0
31.0
31.0
0.58
0.118
30.67
-1.23
-1.15
• 3
No data submitted
TAG SYMBOLS
ft = Above control limit
0 =
vs
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
JJ
-------
EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993 5/14
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tajr
HU
21.0
22.0
20.0
1.00
0.236
21.00
-4.57
-4.50
I
42.0
35.0
35.0
4.04
0.827
37.33
1.08
1.15
IA
•
IC
32.0
31.0
38.0
3.79
0.827
33.67
-0.19
-0.12
J
27.0
37.0
32.0
5.00
1.345
32.00
-0.76
-0.69
JE
25.0
22.0
33.0
5.69
1.570
26.67
.9 fil
-2.54
JG
•
JS
36.0
36.0
37.0
0.58
0.118
36.33
0.74
0.81
JY
31.0
27.0
28.0
2.08
0.473
28.67
-1.92
-1.85
K
33.0
34.0
28.0
3.21
0.709
31.67
-0.88
-0.81
KH
30.0
31.0
31.0
0.58
0.118
30.67
-1.23
-1.15
KL
36.0
36.0
42.0
3.46
0.709
38.00
1.32
1.39
KX
32.0
38.0
34.0
3.06
0.709
34.67
0.16
0.23
L
41.0
39.0
40.0
1.00
0.236
40.00
2.01
2.08
LM
•
LS
ft ¦
LT
41.U
40.0
1.53
0.354
39.67
1.89
1.96
MN
9
MQ
31.0
30.0
30.0
0.58
0.118
30.33
-1.34
-1.27
MS
43.0
46.0
42.0
2.08
0.473
43.67
3.28
3.35
It
N
37.0
39.0
35.0
2.00
0.473
37.00
0.97
1.04
NB
45.0
41.0
49.0
4.00
0.945
45.00
3.74
3.81
ft
NI
•
NJ
13.0
17.0
19.0
3.06
0.709
16.33
-6.19
-6.12
NT
33.0
34.0
35.0
1.00
0.236
34.00
-0.07
0.00
OA
42.0
38.0
45.0
3.51
0.827
41.67
2.59
2.66
OK
OL
33.0
32.0
30.0
1.53
0.354
31.67
-0.88
-0.81
OM
•
PB
35.0
35.0
35.0
0.00
0.000
35.00
0.28
0.35
PC
41.0
48.0
47.0
3.79
0.827
45 33
3.86
3.93
ft
PP
PT
47.0
44.0
44.0
1.73
0.354
45.00
3.74
3.81
ft
PU
30.0
32.0
29.0
1.53
0.354
30.33
-1.34
-1.27
PV
42.0
41.0
48.0
3.79
0.827
43.67
3.28
3.35
IT
Q
30.0
31.0
34.0
2.08
0.473
31.67
-0.88
-0.81
QJ
9
QK
44.0
40.0
42.0
2.00
0.473
42.0v
z./V
2.77
QL
•
QM
59.0
63.0
38.0
13.43
4.721
53.33
6.63
6.70
IT
QQ
•-
QU
87.0
H«;0
82.0
3.21
0.709
85.67
1783
17;90
X
QW
88 0
84.0
86.0
1.15
0.236
86.33
17.71
17.78
X
QX
30.0
30.0
31.0
0.58
0.118
30.33
-1.34
-1.27
QZ
33.0
31.0
31.0
1.15
0.236
31.67
-0.88
-0.81
• = No data submitted TAG SYMBOLS It s Above control limit
|s_0_g_jnsugicientdata x = Determined to be an outlier -It a Below control limit
-------
6/14
EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993
Strontium-89
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
R
31.0
30.0
30.0
0.58
0.118
30.33
-1.34
-1.27
RC
18.0
19.0
20.0
1.00
0.236
19.00
-5.27
-5.20
RF
18.0
19.0
19.0
0.58
0.118
18.67
-5.38
-5.31
u
RK
•
RL
•
RM
44.0
47.0
47.0
1.73
0.354
46.00
4.09
4.16
It
RN
30.0
31.0
32.0
1.00
0.236
31.00
-1.11
-1.04
RR
32.0
33.0
33.0
0.58
0.118
32.67
-0.53
-0.46
S
31.0
32.0
30.0
1.00
0.236
31.00
-1.11
-1.04
sc
29.0
31.0
30.0
1.00
0.236
30.00
-1.46
-1.39
SD
26.0
41.0
31.0
7.64
2.470
32.67
-0.53
-0.46
SF
44.0
33.0
37.0
5.57
1.570
38.00
1.32
1.39
SI
12.0
19.0
22.0
5.13
1.345
17.67
-5.73
-5.66
a
SK
9
SM
30.0
31.0
29.0
1.00
0.236
30.00
-1.46
-1.39
ss
33.0
34.0
34.0
0.58
0.118
33.67
-0.19
-0.12
ST
34.0
34.0
34.0
0.00
0.000
34.00
-0.07
0.00
SZ
39.0
41.0
39.0
1.15
0.236
39.67
1.89
1.96
T
32.0
34.0
34.0
1.15
0.236
33.33
-0.30
-0.23
TA
60.0
31.0
29.0
17.35
6.071
40.00
2.01
2.08
TD
17.0
19.0
30.0
7.00
2.020
22.00
-4.23
-4.16
TG
TH
•
TI
25.0
26.0
25.0
0.58
0.118
25.33
-3.07
-3.00
TL
32.0
40.0
37.0
4.04
0.945
36.33
0.74
0.81
TM
~ .
TP
28.0
27.0
29.0
1.00
0.236
28.00
-2.15
-2.08
TQ
32.0
27.0
29.0
2.52
0.591
29.33
-1.69
-1.62
TS
35.0
40.0
37.0
2.52
0.591
37.33
1.08
1.15
TV
24.0
32.0
27.0
4.04
0.945
27.67
-2.26
-2.19
TW
•
U
32.0
34.0
32.0
1.15
0.236
32.67
-0.53
-0.46
UB
UC
UE
46.0
46.0
46.0
0.00
0.000
46.00
4.09
4.16
ft
UN
6.0
8.0
7;0
0.58
0.118
6.33
-9.65
-9.58
X
uw
76.0
72.0
63.0
6.24
1.795
70.00
12.40
12.47
X
VA
•
w
v
31.0
29.0
31.0
1.15
0.236
30.33
-1.34
-1.27
X
z
36.0
31.0
35.0
2.65
0.591
34.00
-0.07
0.00
•
Average
Tag
Data sorted by Laboratory Average
Lab Average
Tag
Lab
Average
Tag
Lab
6.33
UN
6.67
CG
16.33
NJ
• = No data submitted
0 2 Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1T s Above control limit
U s Below control limit
-------
EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993 7/14
Strontium-89
Data sorted by
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
17.67
li
SI
31.67
K
37.00
CX
18.67
RF
31.67
CJ
37.00
CO
19.00
RC
31.67
BL
37.33
TS
21.00
n
HU
32.00
J
37.33
I
22.00
11
TD
32.33
C
37.33
D
25.33
TI
32.67
U
37.33
BM
26.67
JE
32.67
SD
38.00
SF
27.67
TV
32.67
RR
38.00
KL
28.00
TP
33.33
T
38.33
FU
28.33
CA
33.33
DZ
38.33
FE
28.67
JY
33.67
SS
39.00
CK
29.00
E
33.67
IC
39.33
CS
29.33
TQ
33.67
BC
39.67
SZ
29.33
CQ
33.67
AF
39.67
LT
29.67
DT
33.67
AE
40.00
TA
29.67
AW
34.00
Z
40.00
L
30.00
SM
34.00
ST
40.00
BH
30.00
SC
34.00
NT
41.67
OA
30.33
w
34.00
DO
42.00
QK
30.33
R
34.00
AZ
42.00
AU
30.33
QX
34.00
AL
42.67
AJ
30.33
PU
34.67
KX
43.67
ft
PV
30.33
MQ
35.00
PB
43.67
ft
MS
30.33
DE
35.00
DD
45.00
ft
PT
30.67
KH
35.00
BO
45.00
ft
NB
30.67
HK
35.00
BA
45.33
ft
PC
31.00
S
35.33
AK
46.00
ft
UE
31.00
RN
35.33
A
46.00
ft
RM
31.33
EH
36.33
TL
53.33
ft
QM
31.67
QZ
36.33
JS
53.33
ft
DG
31.67
Q
36.67
EB
70.00
X
UW
31.67
OL
37.00
N
85.33
85.67
X
X
QW
QU
% responding labs Frequency distribution
IJJ ¦ I U U ¦ . li U II . II. U , . u U . . J . . . , J u , I, u „
3L HUU- ¦ ¦,
- ¦fiJfLJl'-l
-2 0 +2
¦¦T ¦ "t1
•4 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
• — No data submitted TAG SYMBOLS IT = Above control limit
0 = Insufficient data x = Determined to be an outlier U = Below control limit.
-------
f
8/14 EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993
Strontium-89
% responding labs Frequency distribution
10-
l|L
ilf mM^a If.
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Strontium in Water, 16-JuI-1993 9/14
I
/ \
Strontium-90 Statistical Summary 131 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
Statistic Respondents Non-outliers
Mean
25.31
Grand Avg 24.02
Std. Dev.
7.68
3.15
Variance
59.04
9.94
% Coef. of Var.
30.36
13.13
% deviation of mean from known value
1.22
-3.93
Norm. dev. of mean from known value
0.04
-0.31
Median
24.17
24.00
% deviation of median from known value
-3.33
-4.00
Norm. dev. of median from known value
-0.11
-0.32
-------
(?
10 / 14 EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993
Strontium-90
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
23.0
0.58
0.118
22.67
-0.47
-0.81
AE
23.0
23.0
22.0
0.58
0.118
22.67
-0.47
-0.81
AF
25.0
25.0
25.0
0.00
0.000
25.00
0.34
0.00
AI
e ,
AJ
26.0
19.0
21.0
3.61
0.827
22.00
-0.70
-1.04
AK
25.0
24.0
26.0
1.00
0.236
25.00
0.34
0.00
AL
26.0
27.0
25.0
1.00
0.236
26.00
0.69
0.35
AU
23.0
22.0
23.0
0.58
0.118
22.67
-0.47
-0.81
AW
31.0
32.0
34.0
1.53
0.354
32.33
2.88
2.54
AY
20.0
21.0
21.0
0.58
0.118
20.67
-1.16
-1.50
AZ
25.0
26.0
27.0
1.00
0.236
26.00
0.69
0.35
BA
23.0
22.0
24.0
1.00
0.236
23.00
-0.35
-0.69
BB
18.0
19.0
20.0
1.00
0.236
19.00
-1.74
-2.08
BC
23.0
23.0
23.0
0.00
0.000
23.00
-0.35
-0.69
BG
21.0
23.0
22.0
1.00
0.236
22.00
-0.70
-1.04
BH
24.0
24.0
24.0
0.00
0.000
24.00
-0.01
-0.35
BL
24.0
24.0
26.0
1.15
0.236
24.67
0.23
-0.12
BM
22.0
22.0
23.0
0.58
0.118
22.33
-0.58
-0.92
BO
25.0
23.0
24.0
1.00
0.236
24.00
-0.01
-0.35
C
24.0
24.0
21.0
1.73
0.354
23.00
-0.35
-0.69
CA
26.0
25.0
24.0
1.00
0.236
25.00
0.34
0.00
CE
25.0
24.0
24.0
0.58
0.118
24.33
0.11
-0.23
CG
34.0
33.0
33.0
0.58
0.118
33.33
3.23
2.89
CJ
24.0
24.0
24.0
0.00
0.000
24.00
-0.01
-0.35
CK
25.0
26.0
27.0
1.00
0.236
26.00
0.69
0.35
CO
21.0
23.0
25.0
2.00
0.473
23.00
-0.35
-0.69
CP
CQ
23.0
24.0
25.0
1.00
0.236
24.00
-0.01
-0.3o
CS
30.0
27.0
29.0
1.53
0.354
28.67
1.61
1.27
CX
23.0
24.0
25.0
1.00
0.236
24.00
-0.01
-0.35
D
26.0
25.0
27.0
1.00
0.236
26.00
0.69
0.35
DD
23.0
23.0
23.0
0.00
0.000
23.00
-0.35
-0.69
DE
25.0
26.0
26.0
0.58
0.118
25.67
0.57
0.23
DG
24.0
23.0
22.0
1.00
0.236
23.00
-0.35
-0.69
DO
21.0
24.0
21.0
1.73
0.354
22.00
-0.70
-1.04
DT
25.0
26.0
26.0
0.58
0.118
25.67
0.57
0.23
DZ
25.0
25.0
24.0
0.58
0.118
24.67
0.23
-0.12
E
25.0
25.0
24.0
0.58
0.118
24.67
0.23
-0.12
EB
18.0
19.0
20.0
1.00
0.236
19.00
-1.74
-2.08
EH
24.0
23.0
25.0
1.00
0.236
24.00
-0.01
-0.35
EL
•
FE
24.0
25.0
24.0
0.58
0.118
24.33
0.11
-0.23
FU
23.0
24.0
24.0
0.58
0.118
23.67
-0.12
-0.46
GG
HK
24.0
23.0
23.0
0.58
0.118
23.33
-0.24
-0.58
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0^
Insufficient data
x =
Determined to be an outlier
U = Below control limit
*-/ = uaia a = i/ciciuuucu tu uc nil uutiici v = uciuv* wutiui uiiut
^ 'J
-------
fir
EMSL-LV Performance Evaluation
Strontium in Water, 16-Jul*1993
^
11 /14
Strontium-90
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
HU
21.0
22.0
21.0
0.58
0.118
21.33
-0.93
-1.27
I
27.0
27.0
26.0
0.58
0.118
26.67
0.92
0.58
IA
•
IC
26.0
26.0
24.0
1.15
0.236
25.33
0.46
0.12
J
25.0
24.0
25.0
0.58
0.118
24.67
0.23
-0.12
JE
48.0
46.0
40.0
416
0.945
44.67
7.15
6;81
X
JG
•
JS
25.u
25.U
25.0
0.00
0.000
25.00
0.34
0.00
JY
22.0
22.0
23.0
0.58
0.118
22.33
-0.58
-0.92
K
20.0
20.0
21.0
0.58
0.118
20.33
-1.28
-1.62
KH
26.0
25.0
26.0
0.58
0.118
25.67
0.57
0.23
KL
23.0
25.0
23.0
1.15
0.236
23.67
-0.12
-0.46
KX
26.0
24.0
25.0
1.00
0.236
25.00
0.34
0.00
L
23.0
25.0
24.0
1.00
0236
24.00
-0.01
-0.35
LM
•
LS
•
LT
25.0
25.0
25.0
0.00
0.000
25.00
0.34
0.00
MN
•
MQ
26.0
27.0
27.0
0.58
0.118
26.67
0.92
0.58
MS
21.0
19.0
19.0
1.15
0.236
19.67
-1.51
-1.85
N
21.0
20.0
21.0
0.58
0.118
20.67
-1.16
-1.50
NB
13.0
22.0
17.0
4.51
1.120
17.33
-2.32
-2.66
NI
•
NJ
34.U
38;0
36.0
2.08
0 473
35.67
4.04
3;70
X
NT
25.0
25.0
26.0
0.58
0.118
25.33
0.46
0.12
OA
25.0
24.0
24.0
0.58
0.118
24.33
0.11
-0.23
OK
•
OL
25.0
22.0
23.0
1.53
0.354
23.33
".24
-0.58
OM
•
PB
25.0
25.0
25.0
0.00
0.000
25.00
0.34
0.00
PC
26.0
27.0
26.0
0.58
0.118
26.33
0.80
0.46
PP
14.0
14.0
15.0
0.58
0.118
14.33
-3.35
-3.70
PT
23.0
24.0
24.0
0.58
0.118
23.67
-0.12
-0.46
PU
20.0
21.0
19.0
1.00
0.236
20.00
-1.39
-1.73
PV
32.0
30.0
25.0
3.61
0.827
29.00
1.73
1.39
Q
26.0
26.0
28.0
1.15
0.236
26.67
0.92
0.58
QJ
23.0
22.0
23.0
0.58
0.118
22.67
-0.47
-0.81
QK
26.0
28.0
26.0
1.15
0.236
26.67
0.92
0.58
QL
32.0
29.0
31.0
1.53
0.354
30.67
2.30
1.96
QM
28.0
28.0
25.0
1.73
0.354
27.00
1.03
0.69
QQ
•
QU
66.0
68;0
71.0
3.00
0.7'09
68.00
15;24
14.90
X
QW
69.0
70.0
69.0
0.68
0.118
6&33
15;70
16;36
X
QX
15.0
16.0
16.0
0.58
0.118
15.67
-2.89
-3.23
a
QZ
21.0
21.0
21.0
0.00
0.000
21.00
-1.04
-1.39
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
L0-
Insufficient data
x =
Determined to be an outlier
•11 s Below control limit
JJ
-------
EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993
~
Stronti um-90
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Lab
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
R
22.0
22.0
22.0
0.00
0.000
22.00
-0.70
-1.04
RC
21.0
22.0
23.0
1.00
0.236
22.00
-0.70
-1.04
RF
27.0
29.0
26.0
1.53
0.354
27.33
1.15
0.81
RK
•
RL
•
RM
27.0
23.0
25.0
2.00
0.473
25.00
0.34
0.00
RN
19.0
18.0
17.0
1.00
0.236
18.00
-2.08
-2.42
RR
25.0
25.0
25.0
0.00
0.000
25.00
0.34
0.00
S
26.0
26.0
26.0
0.00
0.000
26.00
0.69
0.35
sc
24.0
22.0
23.0
1.00
0.236
23.00
-0.35
-0.69
SD
24.0
27.0
24.0
1.73
0.354
25.00
0.34
0.00
SF
17.0
17.0
17.0
0.00
0.000
17.00
-2.43
-2.77
SI
27.0
25.0
24.0
1.53
0.354
25.33
0.46
0.12
SK
•
SM
19.0
19.0
18.0
0.58
0.118
18.67
-1.85
-2.19
SS
24.0
25.0
24.0
0.58
0.118
24.33
0.11
-0.23
ST
26.0
25.0
23.0
1.53
0.354
24.67
0.23
-0.12
sz
21.0
20.0
21.0
0.58
0.118
20.67
-1.16
-1.50
T
23.0
23.0
23.0
0.00
0.000
23.00
-0.35
-0.69
TA
29.0
28.0
28.0
0.58
0.118
28.33
1.50
1.15
ID
34.0
39.0
26.0
6.56
2.020
33.00
3.11
2.77
TO
•
TH
27.0
21.0
19.0
4.16
0.945
22.33
-0.58
-0.92
TI
23.0
23.0
25.0
1.15
0.236
23.67
-0.12
-0.46
TL
29.0
23.0
27.0
3.06
0.709
26.33
0.80
0.46
TM
TP
23.0
24.0
23.0
0.58
0.118
23.33
-0.24
-0.58
TQ
26.0
27.0
26.0
0.58
0.118
26.33
0.80
0.46
TS
23.0
26.0
30.0
3.51
0.827
26.33
0.80
0.46
TV
55.0
59.0
44.C
7.77
2.470
52.67
992
9.58
XV
TW
• •
U
27.0
26.0
32.0
3.21
0.709
28.33
1.50
1.15
UB
¦9
UC
UE
23.0
23.0
26.0
1.73
0.354
24.00
-0.01
-0.35
UN
13.0
12.0
14.0
1.00
0.236
13.00
-3.82
-4.16
X
uw
25.0
25.0
21.0
2.31
0.473
23.67
-0.12
-0.46
VA
*
w
v
24.0
25.0
23.0
100
0.236
24.00
-0.01
-0.35
X
z
26.0
28.0
26.0
1.15
0.236
26.67
0.92
0.58
•
Data sorted by Laboratory Averaj
fe
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
13.00
X
UN
14.33
PP
15.67
QX
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
_0.
Insufficient data
x =
= Determined to be an outlier
ii = Below control limit
y
-------
EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993 13 /14
Strontium-90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
17.00
SF
23.33
OL
25.33
SI
17.33
NB
23.33
HK
25.33
NT
18.00
RN
23.67
UW
25.33
IC
18.67
SM
23.67
n
25.67
KH
19.00
EB
23.67
PT
25.67
DT
19.00
BB
23.67
KL
25.67
DE
19.67
MS
23.67
FU
26.00
S
20.00
PU
24.00
W
26.00
D
20.33
K
24.00
UE
26.00
CK
20.67
SZ
24.00
L
26.00
AZ
20.67
N
24.00
EH
26.00
AL
20.67
AY
24.00
CX
26.33
TS
21.00
QZ
24.00
CQ
26.33
TQ
21.33
HU
24.00
CJ
26.33
TL
22.00
RC
24.00
BO
26.33
PC
22.00
R
24.00
BH
26.67
Z
22.00
DO
24.33
ss
26.67
QK
22.00
BG
24.33
OA
26.67
Q
22.00
AJ
24.33
FE
26.67
MQ
22.33
TH
24.33
CE
26.67
I
22.33
JY
24.67
ST
27.00
QM
22.33
BM
24.67
J
27.33
RF
22.67
QJ
24.67
E
28.33
U
22.67
AU
24.67
DZ
28.33
TA
22.67
AE
24.67
BL
28.67
CS
22.67
A
25.00
SD
29.00
PV
23.00
T
25.00
RR
30.67
QL
23.00
SC
25.00
RM
32.33
AW
23.00
DG
25.00
PB
33.00
TD
23.00
DD
25.00
LT
33.33
CG
23.00
CO
25.00
KX
35.67
X
NJ
23.00
C
25.00
JS
44.67
X
tIE
23.00
BC
25.00
CA
52.67
X
TV
23.00
BA
25.00
AK
68.00
X
QU
23.33
TP
25.00
AF
69.33
X
QW
% responding labs
Frequency distribution
10-
0^-r
•6
T.l__|lllllll
1
mJL
Jij
-4 -2 0 +2
Normalized deviation of the mean from the known value
+4
+6
• = No data submitted
TAG SYMBOLS
It
s Above control limit
0 = Insufficient data
x s Determined to be an outlier
s Below control limit
J)
-------
fr
14/14
EMSL-LV Performance Evaluation: Strontium in Water, 16-Jul-1993
Strontium-90
% responding labs Frequency distribution
10-
itflif::
i i 1" " r" - T""T i " "i* f i —r*
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
United States
Environmental Protection
Agency
Research and Development
Environmental Monitoring
Systems Laboratory
PO Box 93478
Las Vegas NV 89193-3478
EPA 600/R-93/185
September 1993
oEPA
Gross Alpha-Beta in Water
Performance Evaluation
Study Library Use Only
A Statistical Evaluation of
the July 23, 1993 Data
5514GR92NRO COV21
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
July 23, 1993
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; July 23, 1993.
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 accumulate^ over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-1993
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 use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/20
V
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-1993
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, 23-Jul-1993 3/20
Gross Alpha Statistical Summary 261 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
14.84
Grand Avg 12.06
Std. Dev.
17.73
4.28
Variance
314.42
18.28
% Coef. of Var.
119.50
35.45
% deviation of mean from known value
-1.08
-19.59
Norm. dev. of mean from known value
-0.01
-0.69
Median
12.00
11.67
% deviation of median from known value
-20.00
-22.22
Norm. dev. of median from known value
-0.17
-0.78
-------
(T
4/20
>
EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 23-Jul-1993
^
Gross Alpha
N
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
'R + SR)
Average
(grand-avg)
(known) Tae
A
13.0
15.0
16.0
1.53
0.354
14.67
0.90
-0.12
AA
11.0
12.0
12.0
0.58
0.118
11.67
-0.14
-1.15
AE
8.0
8.0
9.0
0.58
0.118
8.33
-1.29
-2.31
AF
15.0
17.0
20.0
2.52
0.591
17.33
1.83
0.81
AI
•
AJ
20.0
22.0
21.0
1.00
0.236
21.00
3.10
2.08
AK
8.0
7.0
7.0
0.58
0.118
7.33
-1.64
-2.66
AL
16.0
12.0
14.0
2.00
0.473
14.00
0.67
-0.35
AN
•
AO
3.0
5.0
8.0
2.52
0.591
5.33
-2.33
-3.35
AP
12.0
12.0
13.0
0.58
0.118
12.33
0.09
-0.92
AR
17.0
18.0
18.0
0.58
0.118
17.67
1.94
0.92
AU
11.0
10.0
6.0
2.65
0.591
9.00
-1.06
-2.08
AW
12.0
12.0
12.0
0.00
0.000
12.00
-0.02
-1.04
AY
•
AZ
11.0
8.0
9.0
1.53
0.354
9.33
-0.94
-1.96
BA
17.0
18.0
20.0
1.53
0.354
18.33
2.17
1.15
BB
11.0
12.0
13.0
1.00
0.236
12.00
-0.02
-1.04
BC
10.0
9.0
10.0
0.58
0.118
9.67
-0.83
-1.85
BG
2.0
1.0
1.0
0.58
0.118
1.33
-3.72
-4.73
li
BH
8.0
8.0
7.0
0.58
0.118
7.67
-1.52
-2.54
BI
15.0
10.0
12.0
2.52
0.591
12.33
0.09
-0.92
BK
11.0
13.0
11.0
1.15
0.236
11.67
-0.14
-1.15
BL
17.0
24.0
18.0
. 3.79
0.827
19.67
2.63
1.62
BM
13.0
12.0
13.0
0.58
0.118
12.67
0.21
-0.81
BN
11.0
11.0
12.0
0.58
0.118
11.33
-0.25
-1.27
BO
11.0
11.0
11.0
0.00
0.000
11.00
-0.37
-1.39
BW
10.0
8.0
11.0
1.53
0.354
9.67
-0.83
-1.85
C
13.0
13.0
13.0
0.00
0.000
13.00
0.33
-0.69
CA
16.0
12.0
17.0
2.65
0.591
15.00
1.02
0.00
CE
16.0
15.0
15.0
0.58
0.118
15.33
1.13
0.12
CG
10.0
11.0
12.0
1.00
0.236
11.00
-0.37
-1.39
C J
17.0
18.0
21.0
2.08
0.473
18.67
2.29
1.27
CK
13.0
15.0
15.0
1.15
0.236
14.33
0.79
-0.23
CO
7.0
7.0
9.0
1.15
0.236
7.67
-1.52
-2.54
CP
8.0
7.0
7.0
0.58
0.118
7.33
-1.64
-2.66
CQ
e
CS
15.0
16.0
17.0
1.00
0.236
16.00
1.36
0.35
CX
10.0
10.0
9.0
0.58
0.118
9.67
-0.83
-1.85
D
16.0
15.0
19.0
2.08
0.473
16.67
1.60
0.58
DB
15.0
16.0
15.0
0.58
0.118
15.33
1.13
0.12
DD
13.0
13.0
8.0
2.89
0.591
11.33
-0.25
-1.27
DE
15.0
16.0
16.0
0.58
0.118
15.67
1.25
0.23
DG
6.0
5.0
6.0
0.58
0.118
5.67
-2.21
-3.23
U
DH
19.0
16.0
12.0
3.51
0.827
15.67
1.25
0.23
• = No data submitted
TAG SYMBOLS
fl s Above control limit
^ 0 = Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
EMgL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-1993 5/20
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DJ
11.0
14.0
4.0
5.13
1.345
9.67
-0.83
-1.85
DM
30.0
21.0
23.0
4.73
1.120
24.67
4.37
3.35
IT
DO
13.0
12.0
14.0
1.00
0.236
13.00
0.33
-0.69
DP
•
DR
9
DS
15.0
10.0
10.0
2.89
0.591
11.67
-0.14
-1.15
DT
12.0
13.0
12.0
0.58
0.118
12.33
0.09
-0.92
DX
7.0
8.0
8.0
0.58
0.118
7.67
-1.52
-2.54
DY
•
DZ
190
20.0
21.0
1.00
0.236
20.00
2.75
1.73
E
10.0
11.0
12.0
1.00
0.236
11.00
-0.37
-1.39
EA
43.0
34.0
38.0
4.51
1.120
38.33
9.10
8.08
X
EB
11.0
11.0
12.0
0.58
0.118
11.33
-0.25
-1.27
EH
12.0
13.0
14.0
1.00
0.236
13 00
0.33
-0.69
EL
•
EN
•
EO
17.0
18.0
18.0
0.58
0.118
17.67
1.94
0.92
ER
15.0
15.0
14.0
0.58
0.118
14.67
0.90
-0.12
ES
•
EV
9.0
10.0
8.0
1.00
0.236
9.00
-1.06
-2.08
EW
45.0
38.0
37.0
4.36
0.945
40.00
9.68
8.66
X
FE
•
FF
13.0
10.0
9.0
2.08
0.473
10.67
-0.48
-1.50
FJ
12.0
11.0
12.0
0.58
0 118
11.67
-0.14
-1.15
FK
•
FL
7.0
7.0
6.0
0.58
0.118
6.67
-1.87
-2.89
FN
•
FP
8.0
9.0
10.0
1.00
0236
9.00
-1.06
-2.08
FU
•
FW
•
FZ
10.0
17.0
19.0
4.73
1.120
15.33
1.13
0.12
GE
•
GJ
6.0
9.0
11.0
2.52
0.591
8.67
-1.18
-2.19
GO
38.0
32.0
40.0
4.16
0.945
36.67
8.52
7.51
X
GQ
16.0
16.0
15.0
0.58
0.118
15.67
1.25
0.23
GT
5.0
13.0
16.0
5.69
1.570
11.33
-0.25
-1.27
GZ
13.0
12.0
15.0
1.53
0.354
13.33
0.44
-0.58
HE
21.0
20.0
19.0
1.00
0.236
20.00
2.75
1.73
HH
6.0
7.0
7.0
0.58
0.118
6.67
-1.87
-2.89
HI
8.0
9.0
8.0
0.58
0.118
8.33
-1.29
-2.31
HK
14.0
14.0
14.0
0.00
0000
14.00
0.67
-0.35
HL
12.0
12.0
12.0
0.00
0.000
12.00
-0.02
-1.04
HN
•
HP
18.0
16.0
18.0
1.15
0.236
17.33
1.83
0.81
HU
20.0
20.0
20.0
0.00
0.000
20.00
2.75
1.73
• s No data submitted
0 s Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U = Below control limit
^ ¦ ¦ ¦ -v
-------
6/20
EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 23-Jul-1993
"O
Gross Alpha
Lab
Res. 1
Res. 2
ReB. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
HX
HY
•
I
15.0
15.0
14.0
0.58
0.118
14.67
0.90
-0.12
IC
17.0
17.0
17.0
0.00
0.000
17.00
1.71
0.69
IE
16.0
17.0
16.0
0.58
0.118
16.33
1.48
0.46
n
•
IU
~
J
12.0
12.0
13.0
0.58
0.118
12.33
0.09
-0.92
•J hi
7.0
8.0
9.0
1.00
0.236
8.00
-1.41
-2.42
JG
14.0
14.0
12.0
1.15
0.236
13.33
0.44
-0.58
JH
12.0
12.0
14.0
1.15
0.236
12.67
0.21
-0.81
JM
10.0
10.0
10.0
0.00
0.000
10.00
-0.71
-1.73
JN
11.0
7.0
8.0
2.08
0.473
8.67
-1.18
-2.19
JP
•
JQ
11.0
9.0
9.0
1.15
0.236
9.67
-0.83
-1.85
JS
9.0
10.0
10.0
0.58
0.118
9.67
-0.83
-1.85
JY
13.0
9.0
9.0
2.31
0.473
10.33
-0.60
-1.62
K
9.0
10.0
9.0
0.58
0.118
9.33
-0.94
-1.96
KC
9.0
11.0
10.0
1.00
0.236
10.00
-0.71
-1.73
KE
8.0
5.0
7.0
1.53
0.354
6.67
oq
•
-2.89
KF
•
KH
9
KT
12.0
12.0
12.0
0.00
0.000
12.00
-0.02
-1.04
KX
16.0
16.0
15.0
0.58
0.118
15.67
1.25
0.23
KZ
12.0
12.0
13.0
0.58
0.118
12.33
0.09
-0.92
L
10.0
6.0
7.0
2.08
0.473
7.67
-1.52
-2.54
LA
•
LE
8.0
11.0
9.0
1.53
0.354
9.33
-0.94
-1.96
LF
10.0
9.0
9.0
0.58
0.118
9.33
-0.94
-1.96
LG
•
LL
25.0
23.0
22.0
1.53
0.354
23.33
3.90
2.89
LM
•
LR
6.0
10.0
8.0
2.00
0.473
8.00
-1.41
-2.42
LS
LT
13.0
10.0
10.0
1.73
0.354
11.00
-0.37
-1.39
LZ
1.0
1.0
1.0
0.00
0.000
1.00
-3.83
-4.85
M
160.0
162.0
160.0
1.15
0.236
1S0.67
51.48
50.46
X
MA
•
MN
•
MQ
5.0
7.0
5.0
1.15
0236
5.67
-2.21
-3.23
u
MS
10.0
11.0
13.0
1.53
0.354
11.33
-0.25
-1.27
MV
14.0
13.0
11.0
1.53
0.354
12.67
0.21
-0.81
MX
3.0
3.0
3.0
0.00
0.000
3.00
-3.14
-4.16
MY
49.0
52.0
51.0
1.63
0.354
50.67
13.37
12.36
X
N
16.0
16.0
16.0
0.00
0.000
16.00
1.36
0.35
• s No data submitted
TAG SYMBOLS
1T = Above control limit
w 0 3 Insufficient data
x =
Determined to be an outlier
II = Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-1993 7 / 20
r —
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
NA
18.0
19.0
18.0
0.58
0.118
18.33
2.17
1.15
NB
20.0
16.0
18.0
2.00
0.473
18.00
2.06
1.04
NE
26.0
30.0
29.0
2.08
0.473
28.33
5.64
4.62
X
NF
9.0
10.0
8.0
1.00
0.236
9.00
-1.06
-2.08
NG
8.0
7.0
8.0
0.58
0.118
7.67
-1.52
-2.54
NH
10.0
11.0
14.0
2.08
0.473
11.67
-0.14
-1.15
NI
•
NJ
10.0
10.0
10.0
0.00
0.000
10.00
-0.71
-1.73
NK
8.0
9.0
8.0
0.58
0.118
8.33
-1.29
-2.31
NO
17.0
18.0
19.0
1.00
0.236
18.00
2.06
1.04
NP
•
NT
13.0
12.0
11.0
1.00
0.236
12.00
-0.02
-1.04
O
16.0
14.0
14.0
1.15
0.236
14.67
0.90
-0.12
OA
12.0
13.0
13.0
0.58
0.118
12.67
0.21
-0.81
OB
15.0
12.0
11.0
2.08
0.473
12.67
0.21
-0.81
OF
19.0
20.0
17.0
1.53
0.354
18.67
2.29
1.27
OK
+
OM
•
OS
9.0
10.0
8.0
1.00
0.236
9.00
-1.06
-2.08
OT
•
OX
11.0
13.0
11.0
1.15
0.236
11.67
-0.14
-1.15
OY
14.0
14.0
13.0
0.58
0.118
13.67
0.56
-0.46
P
15.0
24.0
16.0
4.93
1.120
18.33
2.17
1.15
PA
6.0
7.0
5.0
1.00
0.236
6.00
-2.10
-3.12
PB
10.0
10.0
10.0
0.00
0.000
10.00
-0.71
-1.73
PC
17.0
17.0
21.0
2.31
0.473
18.33
2.17
1.15
PD
•
PG
10.0
13.0
11.0
1.53
0.354
11.33
-0.25
-1.27
PM
14.0
15.0
13.0
1.00
0.236
14.00
0.67
-0.35
PP
•
PQ
11.0
10.0
8.0
1.53
0.354
9.67
-0.83
-1.85
PR
14.0
13.0
13.0
0.58
0.118
13.33
0.44
-0.58
PT
10.0
8.0
8.0
1.15
0.236
8.67
-1.18
-2.19
PV
12.0
13.0
14.0
1.00
0.236
13.00
0.33
-0.69
Q
8.0
9.0
10.0
1.00
0.236
9.00
-1.06
-2.08
QA
9.0
10.0
9.0
0.58
0.118
9.33
-0.94
-1.96
QB
•
QC
12.0
15.0
12.0
1.73
0.354
13.00
0.33
-0.69
QI
3.0
3.0
2.0
0.58
0.118
2.67
-3.25
-4.27
Jl
QJ
14.0
15.0
14.0
0.58
0.118
14.33
0.79
-0.23
QK
•
QM
204.0
179.0
176.0
15.37
5.396
186.33
60.37
59.35
X
QP
5.0
3.0
3.0
1.15
0.236
3.67
-2.91
-3.93
11
QQ
17.0
13.0
14.0
2.08
0.473
14.67
0.90
-0.12
QT
14.0
15.0
16.0
1.00
0.236
15.00
1.02
0.00
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
3 Below control limit
-------
8/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-1993
/ ' ¦
Gross Alpha
I ah Roa i p a o t> Exper. Rng anal Normalized deviation
— Refl 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
Qu 180 190 18.0 0.58 0.118 1833 2.17 1.15
yu
18.U
19.0
18.0
0.58
0.118
18 33
2.17
1.15
QX
5.0
5.0
5.0
0.00
0.000
5.00
-2.45
-3.46
U
QZ
12.0
13.0
13.0
0.58
0.118
12.67
0.21
-0.81
R
15.0
15.0
15 0
0.00
0.000
15.00
1.02
0.00
RB
15.0
16.0
13.0
1.53
0.354
14.67
0.90
-0.12
RC
£
RD
13.0
10.0
16.0
3.00
0.709
13.00
0.33
-0.69
RE
13.0
14.0
15.0
1.00
0.236
14.00
0.67
-0.35
RF
4.0
3.0
3.0
0.58
0.118
3.33
-3.02
-4.04
u
RG
12.0
10.0
11.0
1.00
0.236
11.00
-0.37
-1.39
RH
6.0
5.0
4.0
1.00
0.236
5.00
-2.45
-3.46
u
RI
8.0
6.0
5.0
1.53
0.354
6.33
-1.98
-3.00
RJ
14.0
14.0
17.0
1.73
0.354
15.00
1.02
0.00
RL
•
RM
15.0
15.0
14.0
0.58
0 118
14.67
0.90
-0.12
RN
12.0
12.0
11.0
0.58
0 118
11.67
-0.14
-1.15
RQ
•
RR
16.0
16.0
16.0
0.00
0 000
16.00
1.36
0.35
RT
•
RV
12.0
14.0
13.0
1.00
0.236
13.00
0.33
-0.69
RW
11.0
11.0
11.0
0.00
0.000
11.00
-0.37
-1.39
RX
•
RZ
14.0
14.0
13.0
0.58
0.118
13.67
0.56
-0.46
S
18.0
17.0
18.0
0.58
0 118
17.67
1.94
0.92
SA
*
SC
10.0
8.0
7.0
1.53
0 354
8.33
-1.29
-2.31
SD
9.0
8.0
11.0
1.53
0 354
9.33
-0.94
-1.96
SF
9.0
11.0
14.0
2.52
0 591
11.33
-0.25
-1.27
SO
•
SI
8.0
8.0
9.0
0.58
0 118
8.33
-1.29
-2.31
SL
25.0
23.0
20.0
2.52
0 591
22.67
3.67
2.66
SM
15.0
14.0
14.0
0.58
0 118
14.33
0.79
-0.23
SN
9.0
8.0
7.0
1.00
0 236
8.00
-1.41
-2.42
SO
13.0
13.0
13.0
0.00
0000
13.00
0.33
-0.69
SR
11.0
10.0
10.0
0.58
0 118
10.33
-0.60
-1.62
ss
11.0
10.0
8.0
1.53
0 354
9.67
-0.83
-1.85
ST
12.0
13.0
14.0
1.00
0 236
13.00
0.33
-0.69
su
8.0
6.0
5.0
1.53
0 354
6.33
-1.98
-3.00
sw
11.0
10.0
10.0
0.58
0 118
10.33
-0.60
-1.62
sx
21.0
20.0
19.0
1.00
0 236
20.00
2.75
1.73
sz
16.0
14.0
14.0
1.15
0 236
14.67
0.90
-0.12
T
16.0
18.0
13.0
2.52
0.591
15.67
1.25
0.23
TA
15.0
17.0
19.0
2.00
0 473
17.00
1.71
0.69
TC
6.0
7.0
7.0
0.58
0 118
6.67
-1.87
-2.89
TD
2.0
2.0
2.0
0.00
0 000
2.00
-3.49
-4.50
• = No data submitted TAG SYMBOLS ff = Above control limit
1 0 = Insufficient data x = Determined to he an outlier U = Below control limit
-------
EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 23-Jul-1993
9/20
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
TE
TG
12.0
12.0
11.0
0.58
0.118
11:67
-0.14
-1.15
TH
34.0
34.0
35.0
0.58
0.118
34.33
7.72
6.70
X
TI
12.0
9.0
14.0
2.52
0.591
11.67
-0.14
-1.15
TK
10.0
9.0
8.0
1.00
0.236
9.00
-1.06
-2.08
TL
9.0
9.0
11.0
1.15
0.236
9.67
-0.83
-1.85
TM
TN
11.0
11.0
12.0
0.58
0.118
11.33
-0.25
-1.27
TO
•
TP
•
TQ
8.0
9.0
9.0
0.58
0.118
8.67
-1.18
-2.19
TS
•
IT
•
TV
12.0
11.0
11.0
0.58
0.118
11.33
-0.25
-1.27
TW
•
TY
22.0
20.0
21.0
1.00
0.236
21.00
3.10
2.08
U
10.0
10.0
9.0
0.58
0.118
9.67
-0.83
-1.85
UA
14.0
16.0
15.0
1.00
0.236
15.00
1.02
0.00
UB
m
UC
•
UE
11.0
9.0
10.0
1.00
0.236
10.00
-0.71
-1.73
UG
15.0
16.0
16.0
0.58
0.118
15.67
1.25
0.23
UI
19.0
20.0
18.0
1.00
0.236
19.00
2.40
1.39
UJ
•
UL
•
UN
9.0
8.0
8.0
0.58
0.118
8.33
-1.29
-2.31
UP
10.0
11.0
11.0
0.58
0.118
10.67
-0.48
-1.50
UQ
7.0
7.0
7.0
0.00
0.000
7.00
-1.75
-2.77
uw
13.0
13.0
10.0
1.73
0.354
12.00
-0.02
I
t—»
©
UY
•
UZ
70.0
70.0
90.0
11.55
3.596
76.67
22.38
21.36
X
VA
24.0
39.0
26.0
8.14
2.470
29.67
6.10
5.08
X
w
15.0
16.0
12.0
2.08
0.473
14.33
0.79
-0.23
X
13.0
14.0
13.0
0.58
0.118
13.33
0.44
-0.58
Y
•
Z
16.0
16.0
13.0
1.73
0.354
15.00
1.02
0.00
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
1.00
li
LZ
3.67
11
QP
6.00 11
PA
1.33
11
BG
5.00
11
RH
6.33
SU
2.00
U
TD
5.00
QX
6.33
RI
2.67
11
QI
5.33
U
AO
6.67
TC
3.00
U
MX
5.67
11
MQ
6.67
KE
3.33
4
RF
5.67
1!
DG
6.67
HH
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
11 = Below control limit
-------
'
10/20 EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 23-Jul-1993
Gross Alpha
Average Tag
Data sorted by Laboratory Average
Lab
Average
Tag
Lab
Average
Tag
Lab
6.67
FL
9.67
BC
12.33
- — p
BI
7.00
UQ
10.00
UE
12.33
AP
7.33
CP
10.00
PB
12.67
QZ
7.33
AK
10.00
NJ
12.67
OB
7.67
NG
10.00
KC
12.67
OA
7.67
L
10.00
JM
12.67
MV
7.67
DX
10.33
SW
12.67
JH
7.67
CO
10.33
SR
12.67
BM
7.67
BH
10.33
JY
13.00
ST
8.00
SN
10.67
UP
13.00
SO
8.00
LR
10.67
FF
13.00
RV
8.00
JE
11.00
RW
13.00
RD
8.33
UN
11.00
RG
13.00
QC
8.33
SI
11.00
LT
13.00
PV
8.33
sc
11.00
E
13.00
EH
8.33
NK
11.00
CG
13.00
DO
8.33
m
11.00
BO
13.00
C
8.33
AE
11.33
TV
13.33
X
8.67
TQ
11.33
TN
13.33
PR
8.67
PT
11.33
SF
13.33
JG
8.67
JN
11.33
PG
13.33
GZ
8.67
GJ
11.33
MS
13.67
RZ
9.00
TK
11.33
GT
13.67
OY
9.00
Q
11.33
EB
14.00
RE
9.00
OS
11.33
DD
14.00
PM
9.00
NF
11.33
BN
14.00
HK
9.00
FP
11.67
TI
14.00
AL
9.00
EV
11.67
TG
14.33
W
9.00
AU
11.67
RN
14.33
SM
9.33
SD
11.67
OX
14.33
QJ
9.33
QA
11.67
NH
14.33
CK
9.33
LF
11.67
FJ
14.67
sz
9.33
LE
11.67
DS
14.67
RM
9.33
K
11.67
BK
14.67
RB
9.33
AZ
11.67
AA
14.67
QQ
9.67
U
12.00
UW
14.67
O
9.67
TL
12.00
NT
14.67
I
9.67
ss
12.00
KT
14.67
ER
9.67
PQ
12.00
HL
14.67
A
9.67
JS
12.00
BB
15.00
Z
9.67
JQ
12.00
AW
15.00
UA
9.67
DJ
12.33
KZ
15.00
RJ
9.67
CX
12.33
J
15.00
R
9.67
BW
12.33
DT
15.00
QT
• = No data submitted
TAG SYMBOLS
It
= Above control limit
[ 0 = Insufficient data
x = Determined to be an outlier
li
= Below control limit
'J
-------
A
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-1993 11/20
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
15.00
CA
17.33
HP
20.00
HU
15.33
FZ
17.33
AF
20.00
HE
15.33
DB
17.67
S
20.00
DZ
15.33
CE
17.67
EO
21.00
TY
15.67
UG
17.67
AR
21.00
AJ
15.67
T
18.00
NO
22.67
SL
15.67
KX
18.00
NB
23.33
LL
15.67
GQ
18.33
QU
24.67
IT
DM
15.67
DH
18.33
PC
28.33
X
NE
15.67
DE
18.33
P
29.67
X
VA
16.00
RR
18.33
NA
34.33
X
TH
16.00
N
18.33
BA
36.67
X
GO
16.00
CS
18.67
OF
38.33
X
EA
16.33
IE
18.67
CJ
40.00
X
EW
16.67
D
19.00
UI
50.67
X
MY
17.00
TA
19.67
BL
76.67
X
UZ
17.00
IC
20.00
sx
160.67
186.33
X
X
M
QM
responding labs Frequency distribution
10-
¦I lta|
i i ™. ..........
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10«
- T ¦ , ¦ T.
-4 -2 0 +2 +4 +-6
Normalized deviation of the mean from the grand average
• = 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: Gross Alpha-Beta in Water, 23-Jul-1993 12/20
Gross Beta Statistical Summary 261 Participants
The known value of this nuclide is 43.0 pCi/1 with an expected precision of 6.9; the control limits
are 31.0 to 55.0; the warning regions are 31.0 to 35.0 and 51.0 to 55.0
52(19.9 %) Failed to respond •,
138(52.9 %) Within all limits
35(1 3.4 %) Out of control '
'• 30(11.5 %) In warning zone
but not an outlier
r
i
but within control
Statistic
Respondents
Non-outliers
Mean
43.74
Grand Avg 37.65
Std. Dev.
79.25
8.49
Variance
6281.29
72.09
% Coef. of Var.
181.19
22.55
% deviation of mean from known value
1.72
-12.44
Norm. dev. of mean from known value
0.01
-0.63
Median
38.67
38.67
% deviation of median from known value
-10.08
-10.08
Norm. dev. of median from known value
-0.05
-0.51
41(19.6 %) More than 3 norm. S.D. »
3(39.7 %) Within 1 norm. S.D.
of known value
-------
13/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-1993
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
45.0
44 0
47.0
1.53
0.256
45.33
1.92
0.58
AA
28.0
25.0
27.0
1.53
0.256
26.67
-2.75
-4.08 U
AE
31.0
32.0
34.0
1.53
0.256
32.33
-1.33
-2.67
AF
45.0
42.0
43.0
1.53
0.256
43.33
1.42
0.08
AI
AJ
37.0
38.0
37.0
0.58
0.085
37.33
-0.08
-1.42
AK
36.0
39.0
37.0
1.53
0.256
37.33
-0.08
-1.42
AL
65.0
61.0
63.0
2.00
0.341
63.00
6.34
5.00 ft
AN
•
AO
10.0
11.0
15.0
2.65
0.426
12.00
-6.41
-7.75 1!
AP
31.0
33.0
35.0
2.00
0.341
33.00
-1.16
-2.50
AR
35.0
36.0
32.0
2.08
0.341
34.33
-0.83
-2.17
AU
47.0
39.0
42.0
4.04
0.682
42.67
1.25
-0.08
AW
42.0
43.0
43.0
0.58
0.085
42.67
1.25
-0.08
AY
•
AZ
35.0
31.0
33.0
2.00
0.341
33.00
-1.16
-2.50
BA
41.0
43.0
43.0
1.15
0.170 .
42.33
1.17
-0.17
BB
38.0
38.0
40.0
1.15
0.170
38.67
0.25
-1.08
BC
34.0
37.0
35.0
1.53
0.256
35.33
-0.58
-1.92
BG
26.0
26.0
26.0
0.00
0.000
26.00
-2.91
-4.25 H
BH
34.0
32.0
31.0
1.53
0.256
32.33
-1.33
-2.67
BI
44.0
42.0
45.0
1.53
0.256
43.67
1.50
0.17
BK
36.0
45.0
38.0
4.73
0.767
39.67
0.50
-0.83
BL
39.0
45.0
35.0
5.03
0.852
39.67
0.50
-0.83
BM
39.0
43.0
40.0
2.08
0.341
40.67
0.75
-0.58
BN
40.0
39.0
39.0
0.58
0.085
39.33
0.42
-0.92
BO
34.0
33.0
31.0
1.53
0.256
32.67
-1.25
-2.58
BW
29.0
26.0
28.0
1.53
0.256
27.67
-2.50
-3.83 U
C
42.0
43.0
43.0
0.58
0.085
42.67
1.25
-0.08
CA
38.0
47.0
39.0
4.93
0.767
41.33
0.92
-0.42
CE
38.0
38.0
38.0
0.00
0.000
38.00
0.09
-1.25
CG
36.0
37.0
33.0
2.08
0.341
35.33
-0.58
-1.92
CJ
43.0
40.0
45.0
2.52
0.426
42.67
1.25
-0.08
CK
45.0
40.0
43.0
2.52
0.426
42.67
1.25
-0.08
CO
31.0
36.0
26.0
5.00
0.852
31.00
-1.66
-3.00
CP
39.0
36.0
37.0
1.53
0.256
37.33
-0.08
-1.42
CQ
35.0
42.0
43.0
4.36
0.682
40.00
0.59
-0.75
CS
33.0
36.0
36.0
1.73
0.256
35.00
-0.66
-2.00
CX
23.0
23.0
22.0
0.58
0.085
22.67
-3.75
-5.08 li
D
40.0
40.0
42.0
1.15
0.170
40.67
0.75
-0.58
DB
41.0
40.0
40.0
0.58
0.085
40.33
0.67
-0.67
DD
32.0
31.0
32.0
0.58
0.085
31.67
-1.50
-2.83
DE
39.0
39.0
39.0
0.00
0.000
39.00
0.34
-1.00
DG
54.0
36.0
65.0
14.64
3.803
51.67
3.50
2.17
DH
37.0
35.0
32.0
2.52
0.426
34.67
-0.75
-2.08
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
0 s Insufficient data x = Determined to be an outlier li h Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-JuM993 14 / 20~)
Gross Beta
Lab Res. 1
Res. 2
Ree. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
-------
[ 15 / 20 EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 23-Jul-1993
^
r
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known)
Tag
HX
71.0
76.0
74.0
2.52
0.426
73.67
9.00
7.66
X
HY
9
I
39.0
39.0
40.0
0.58
0.085
39.33
0.42
-0.92
IC
50.0
45.0
39.0
5.51
0.938
44.67
1.75
0.42
IE
n
27.0
28.0
29.0
1.00
0.170
28.00
-2.41
-3.75
D
* *
IU
36.0
38.0
37.0
1.00
0.170
37.00
-0.16
-1.50
•
j
45.0
46.0
46.0
0.58
0.085
45.67
2.00
0.67
JE
30.0
29.0
34.0
2.65
0.426
31.00
-1.66
-3.00
JG
44.0
45.0
46.0
1.00
0.170
45.00
1.84
0.50
JH
25.0
230
23.0
1.15
0.170
23.67
-3.50
-4.83
il
JM
44.0
41.0
42.0
1.53
0.256
42.33
1.17
-0.17
JN
36.0
36.0
34.0
1.15
0.170
35.33
-0.58
-1.92
JP
34.0
33.0
34.0
0.58
0.085
33.67
-1.00
-2.33
JQ
•
JS
42.0
46.0
41.0
2.65
0.426
43.00
1.34
0.00
JY
32.0
20.0
31.0
6.66
1.043
27.67
-2.50
-3.83
K
33.0
33.0
34.0
0.58
0085
33.33
-1.08
-2.42
KC
21.0
22.0
20.0
1.00
0.170
21.00
-4.16
-5.50
11
KE
38.0
35.0
37.0
1.53
0.256
36.67
-0.25
-1.58
KF
•
KH
•
KT
51.0
51.0
50.0
0.58
0.085
50.67
3.25
1.92
KX
39.0
38.0
44.0
3.21
0.511
40.33
0.67
-0.67
KZ
31.0
31.0
31.0
0.00
0.000
31.00
-1.66
-3.00
L
42.0
43.0
42.0
0.58
0.085
42.33
1.17
-0.17
LA
•
LE
42.0
31.0
36.0
5.51
0.938
36.33
-0.33
-1.67
LF
31.0
41.0
38.0
5.13
0.852
36.67
-0.25
-1.58
LG
•
LL
40.0
38.0
39.0
1.00
0.170
39.00
0.34
-1.00
LM
•
LR
44.0
44.0
40.0
2.31
0.341
42.67
1.25
-0.08
LS
•
LT
38.0
28.0
34.0
5.03
0.852
33.33
-1.08
-2.42
LZ
2.0
2.0
2.0
0.00
0.000
2.00
-8.91
-10.25
X
M
178.0
180.0
178.0
1.15
0.170
178.67
36.24
33.91
X
MA
31.0
34.0
34.0
1.73
0.256
33.00
-1.16
-2.50
MN
•
MQ
43.0
46.0
43.0
1.73
0.256
44.00
1.59
0.25
MS
37.0
38.0
38.0
0.58
0.085
37.67
0.00
-1.33
MV
38.0
36.0
33.0
2.52
0.426
35.67
-0.50
-1.83
MX
6.0
2.0
2.0
1.73
0.256
3.00
-8.66
-10.00
X
MY
58.0
50.0
56.0
4.16
0.682
54.67
4.25
2.92
N
33.0
36.0
37.0
2.08
0.341
35.33
-0.58
-1.92
• =
No data submitted
TAG SYMBOLS
s Above control limit
[0.
Insufficient data
x =
Determined to be an outlier
U 3 Below control limit J
-------
V.
EMSL-LV Performance Evaluation:
¦ ^
Gross Alpha-Beta in Water, 23-Jul-1993 16/20
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
NA
29.0
32.0
31.0
1.53
0.256
30.67
-1.75
-3.08
11
NB
40.0
40.0
37.0
1.73
0.256
39.00
0 34
-1.00
NE
24.0
28.0
26.0
2.00
0.341
26.00
-2.91
-4.25
NF
48.0
47.0
50.0
1.53
0.256
48.33
2.67
1.33
NG
32.0
31.0
32.0
0.58
0.085
31.67
-1.50
-2.83
NH
39.0
36.0
38.0
1.53
0.256
37.67
0.00
-1.33
NI
•
NJ
26.0
27.0
25.0
1.00
0.170
26.00
-2.91
-4.25
a
NK
23.0
23.0
19.0
2.31
0.341
21.67
-4.00
-5.33
u
NO
38.0
43.0
53.0
7.64
1.530
44.67
1.75
0.42
NP
0
NT
23.0
28.0
26.0
2.52
0.426
25.67
-3.00
-4.33
u
O
34.0
38.0
37.0
2.08
0.341
36.33
-0.33
-1.67
OA
41.0
42.0
42.0
0.58
0.085'
41.67
1.00
-0.33
OB
59.0
53.0
48.0
5.51
0.938
53.33
3.92
2.58
OF
41.0
41.0
42.0
0.58
0.085
41.33
0.92
-0.42
OK
«
OM
m
OS
54.0
53.0
53.0
0.58
0.085
53.33
3.92
2.58
OT
•
OX
36.0
36.0
33.0
1.73
0.256
35.00
-0.66
-2.00
OY
27.0
23.0
26.0
2.08
0.341
25.33
-3.08
-4.42
u
P
30.0
38.0
33.0
4.04
0.682
33.67
-1.00
-2.33
PA
44.0
42.0
46.0
2.00
0.341
44.00
1.59
0.25
PB
35.0
34.0
36.0
1.00
0.170
35.00
-0.66
-2.00
PC
38.0
35.0
35.0
1.73
0.256
36.00
i
i—*
-1.75
PD
•
PG
39.0
41.0
36.0
2.52
0.426
38.67
0.25
-1.08
PM
35.0
40.0
38.0
2.52
0.426
37.67
0.00
-1.33
PP
•
PQ
42.0
42.0
42.0
0.00
0.000
42.00
1.09
-0.25
PR
31.0
30.0
30.0
0.58
0.085
30.33
-1.83
-3.17
PT
36.0
33.0
39.0
3.00
0.511
36.00
-0.41
-1.75
PV
33.0
36.0
37.0
2.08
0.341
35.33
-0.58
-1.92
Q
40.0
46.0
36.0
5.03
0.852
40.67
0.75
-0.58
QA
43.0
42.0
45.0
1.53
0 256
43.33
1.42
0.08
QB
•
QC
36.0
37.0
39.0
1.53
0.256
37.33
-0.08
-1.42
QI
16.0
17.0
16.0
0.58
0.085
16.33
-5.33
-6.66
JJ
QJ
39.0
37.0
34.0
2.52
0.426
36.67
-0.25
-1.58
QK
42.0
44.0
43.0
1.00
0.170
43.00
1.34
0.00
QM
36.0
39.0
34.0
2.52
0.426
36.33
-0.33
-1.67
QP
27.0
31.0
33.0
3.06
0.511
30.33
-1.83
t-
CO
1
11
QQ
42.0
45.0
43.0
1.53
0.256
43.33
1.42
0.08
QT
44.0
66.0
42.0
13.32
2.992
50.67
3.25
1.92
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 =
^
Insufficient data
x =
Determined to be an outlier
U s Below control limit
Jj
-------
r,
17 / 20 EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 23-Jul-1993
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
QU
50.0
49.0
49.0
0.58
0.085
49.33
2.92
1.58
QX
36.0
36.0
36.0
0.00
0.000
36.00
-0.41
-1.75
QZ
46.0
50.0
44.0
3.06
0.511
46.67
2.25
0.92
R
49.0
47.0
45.0
2.00
0.341
47.00
2.34
1.00
RB
36.0
36.0
37.0
0.58
0.085
36.33
-0.33
-1.67
RC
•
RD
39.0
40.0
42.0
1.53
0.256
40.33
0.67
-0.67
RE
44.0
41.0
42.0
1.53
0.256
42.33
1.17
-0.17
RF
9.0
8.0
9.0
0.58
0.085
8.67
-7.24
-8.58
a
RG
32.0
31.0
34.0
1.53
0.256
32.33
-1.33
-2.67
RH
44.0
43.0
42.0
1.00
0.170
43.00
1.34
0.00
RI
43.0
47.0
47.0
2.31
0.341
45.67
2.00
0.67
RJ
42.0
44.0
40.0
2.00
0.341
42.00
1.09
-0.25
RL
%
RM
41.0
40.0
41.0
0.58
0.085
40.67
0.75
-0.58
RN
33.0
33.0
29.0
2.31
0.341
31.67
-1.50
-2.83
HQ
•
RR
53.0
40.0
39.0
7.81
1.368
44.00
1.59
0.25
RT
*
RV
42.0
38.0
38.0
2.31
0.341
39.33
0.42
-0.92
RW
31.0
35.0
38.0
3.51
0.597
34.67
-0.75
-2.08
RX
•
RZ
37.0
34.0
38.0
2.08
0.341
36.33
-0.33
-1.67
S
47.0
47.0
48.0
0.58
0.085
47.33
2.42
1.08
SA
•
SC
38.0
38.0
41.0
1.73
0.256
39.00
0.34
-1.00
SD
53.0
47.0
51.0
3.06
0.511
50.33
3.17
1.83
SF
35.0
34.0
37.0
1.53
0.256
35.33
-0.58
-1.92
SO
•
SI
34.0
34.0
26.0
4.62
0.682
31.33
-1.58
-2.92
SL
56.0
56.0
38.0
10.39
2.018
50.00
3.09
1.75
SM
43.0
43.0
41.0
1.15
0.170
42.33
1.17
-0.17
SN
36.0
31.0
31.0
2.89
0.426
32.67
-1.25
-2.58
SO
42.0
39.0
42.0
1.73
0.256
41.00
0.84
-0.50
SR
41.0
39.0
39.0
1.15
0.170
39.67
0.50
-0.83
ss
39.0
37.0
36.0
1.53
0.256
37.33
-0.08
-1.42
ST
41.0
42.0
43.0
1.00
0.170
42.00
1.09
-0.25
su
29.0
28.0
27.0
1.00
0.170
28.00
-2.41
-3.75
ji
sw
56.0
52.0
61.0
4.51
0.767
56.33
4.67
3.33
it
sx
23.0
25.0
21.0
2.00
0.341
23.00
-3.66
-5.00
ji
sz
22.0
24.0
21.0
1.53
0.256
22.33
-3.83
-5.17
u
T
38.0
38.0
33.0
2.89
0.426
36.33
-0.33
-1.67
TA
39.0
41.0
42.0
1.53
0.256
40.67
0.75
-0.58
TC
21.0
22.0
23.0
1.00
0.170
22.00
-3.91
-5.25
a
TD
14.0
14.0
14.0
0.00
0.000
14.00
-5.91
-7.25
u
• =
No data submitted
TAG SYMBOLS
It = Above control limit
[0a
Insufficient data
x =
Determined to be an outlier
•H s Below control limit
-------
fr
/ ~~
EMSL-LV Performance Evaluation:
Gross Alpha-Beta in Water, 23-Jul-1993 18 / 20
Gross Beta
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known)
Tag
TE
TG
38.0
39.0
39.0
0.58
0.085
38.67
0.25
i
o
30
•
TH
45.0
46.0
45.0
0.58
0.085
45.33
1.92
0.58
TI
45.0
43.0
45.0
1.15
0.170
44.33
1.67
0.33
TK
40.0
39.0
40.0
0.58
0.085
39.67
0.50
-0.83
TL
40.0
39.0
32.0
4.36
0.682
37.00
-0.16
-1.50
TM
TN
40.0
40.0
42.0
1.15
0.170
40.67
0.75
-0.58
TO
TP
•
TQ
34.0
37.0
41.0
3.51
0.597
37.33
-0.08
-1.42
TS
•
IT
•
TV
35.0
36.0
38.0
1.53
0.256
36.33
-0.33
-1.67
TW
•
TY
46.0
45.0
44.0
1.00
0.170
45.00
1.84
0.50
U
38.0
41.0
41.0
1.73
0.256
40.00
0.59
-0.75
UA
40.0
42.0
39.0
1.53
0.256
40.33
0.67
-0.67
UB
UC
•
UE
45.0
46.0
47.0
1.00
0.170
46.00
2.09
0.75
UG
25.0
26.0
26.0
0.58
0.085
25.67
-3.00
-4.33
11
UI
66.0
64.0
62.0
2.00
0.341
64.00
6.59
5.25
ft
UJ
•
UL
•
UN
39.0
37.0
25.0
7.57
1.368
33.67
-1.00
-2.33
UP
38.0
39.0
40.0
1.00
0.170
39.00
0.34
o
©
i
UQ
42.0
41.0
40.0
1.00
0.170
41.00
0.84
-0.50
uw
35.0
40.0
44.0
4.51
0.767
39.67
0.50
-0.83
UY
•
uz
1100.0
1110.0
1290.0
106.93
29.942
1166.67
282.18
280.84
X
VA
53.0
122.0
49.0
41.04
10.947
74.67
9.25
7.91
X
w
42.0
41.0
45.0
2.08
0.341
42.67
1.25
-0.08
X
45.0
47.0
46.0
1.00
0.170
46.00
2.09
0.75
Y
34.0
33.0
38.0
2.65
0.426
35.00
-0.66
-2.00
Z
41.0
48.0
41.0
4.04
0.597
43.33
1.42
0.08
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.00
X
LZ
16.33
U
Qi
22.33
U
SZ
3.00
X
MX
19.00
U
HH
22.67
U
CX
8.67
u
RF
19.67
u
GT
23.00
U
sx
11.33
11
GJ
21.00
11
KC
23.00
11
GO
12.00
u
AO
21.67
u
NK
23.67
U
JH
14.00
u
TD
22.00
u
TC
24.67
FZ
• s
No data submitted
TAG SYMBOLS
1T = Above control limit
0 =
^
Insufficient data
x =
= Determined to be an outlier
U = Below control limit
'J
-------
?
19/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-1993
V-
f — ==, _ .. =;— -
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
25.33
U
OY
35.00
cs
39.00
UP
25.67
u
UG
35.33
SF
39.00
sc
25.67
11
NT
35.33
PV
39.00
NB
26.00
11
NJ
35.33
N
39.00
LL
26.00
u
NE
35.33
JN
39.00
EH
26.00
I
BG
35.33
CG
39.00
DE
26.67
11
AA
35.33
BC
39.33
RV
27.67
u
JY
35.67
MV
39.33
I
27.67
u
BW
36.00
QX
39.33
EO
28.00
11
SU
36.00
PT
39.33
BN
28.00
u
IE
36.00
PC
39.67
UW
29.00
11
HU
36.00
HL
39.67
TK
30.33
11
QP
36.33
TV
39.67
SR
30.33
u
PR
36.33
T
39.67
BL
30.67
I
NA
36.33
RZ
39.67
BK
31.00
KZ
36.33
RB
40.00
U
31.00
JE
36.33
QM
40.00
EW
31.00
CO
36.33
O
40.00
EV
31.33
SI
36.33
LE
40.00
EB
31.67
RN
36.33
HE
40.00
DX
31.67
NG
36.33
DT
40.00
CQ
31.67
DD
36.67
QJ
40.33
UA
32.33
RG
35.67
LF
40.33
RD
32.33
FF
36.S7
KE
40.33
KX
32.33
BH
37.00
TL
40.33
DB
32.33
AE
37.00
IU
40.67
TN
32.67
SN
37.00
GZ
40.67
TA
32.67
BO
37.00
FL
40.67
RM
33.00
MA
37.33
TQ
40.67
Q
33.00
AZ
37.33
SS
40.67
DO
33.00
AP
37.33
QC
40.67
D
33.33
LT
37.33
CP
40.67
BM
33.33
K
37.33
AK
41.00
UQ
33.67
UN
37.33
AJ
41.00
SO
33.67
P
37.67
PM
41.33
OF
33.67
JP
37.67
NH
41.33
CA
34.33
HI
37.67
MS
41.67
OA
34.33
AR
37.67
E
42.00
ST
34.67
RW
38.00
DZ
42.00
RJ
34.67
DH
38.00
CE
42.00
PQ
35.00
Y
38.67
TG
42.33
SM
35.00
PB
38.67
PG
42.33
RE
35.00
OX
38.67
GE
42.33
L
35.00
FP
38.67
BB
42.33
JM
• 5 No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It
u
== Above control limit
h Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 23-Jul-l»93
Gross Beta
20/20
Data sorted by
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
42.33
HP
44.00
PA
47.33
s
42.33
BA
44.00
MQ
48.33
NF
42.67
W
44.33
TI
49.33
QU
42.67
LR
44.67
NO
50.00
SL
42.67
EL
44.67
IC
50.33
SD
42.67
CK
44.67
HK
50.67
QT
42.67
CJ
44.67
EA
50.67
KT
42.67
C
45.00
TY
51.67
F.J
42.67
AW
45.00
JG
51.67
DG
42.67
AU
45.00
GQ
53.33
OS
43.00
RH
45.00
DS
53.33
OB
43.00
QK
45.00
DR
54.67
MY
43.00
JS
45.33
TH
56.33
ft
SW
43.33
Z
45.33
A
58.00
ft
DJ
43.33
QQ
45.67
RI
63.00
It
AL
43.33
QA
45.67
J
64.00
ft
UI
43.33
AF
46.00
X
73.67
X
HX
43.67
BI
46.00
UE
74.67
X
VA
44.00
RR
46.67
QZ
178.67
X
M
47.00
R
1166.67
X
UZ
responding labs Frequency distribution
" T *¦ -i T* r-
+2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
-J- ¦-.mmUrn^
^ — — f - j-
-6 -4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS IT = Above control limit
[0s Insufficient data x Determined to be an outlier II = Below control limit
-------
United States Environmental Monitoring EPA 600/R-93/215
Environmental Protection Systems Laboratory November 1993
Agency P.O. Box 93478
Las Vegas NV 89193-3478
Research and Development
Uranium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the August 13,1993 Data
-------
Uranium in Water
Performance Evaluation Study
August 13, 1993
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 in Water; August 13, 1993.
The Known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found In the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Uranium in Water, 13-Aug-1993
1/0
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/9
EMSL-LV Performance Evaluation: Uranium in Water, 13-Aug-1993
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 in Water, 13-Aug-1993
3/9
Uranium (Natural)
Statistical Summary
164 Participants
The known value of this nuclide is 25.3 pCi/1 with an expected precision of 3.0; the control limits
are 20.1 to 30.5; the warning regions are 20.1 to 21.8 and 28.8 to 30.5
26(15.9 %) Failed to respond
12(7.3 %) Outliers '
11 (6.7 %) Out of control"
but not an outlier
Statistic
. 100(61.0 °/o) Within all limits
Respondents
15(0.1 %) 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
24.41
5.65
31.98
23.17
-3.53
-0.16
24.90
-1.58
-0.07
Grand Avg 24.91
2.85
8.13
11.45
-1.55
-0.14
24.97
-1.32
-0.12
-------
C(
4/9
EMSL-LV Performance Evaluation: Uranium in Water, 13-Aug-1993
C\
Uranium (Natural)
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
24.8
25.7
25.0
0.47
0.177
25.17
0.15
-0.08
AA
26.1
24.3
25.8
0.96
0.354
25.40
0.28
0.06
AE
26.1
28.9
26.2
1.59
0.551
27.07
1.25
1.02
AF
20.7
19.8
22.5
1.37
0.532
21.00
-2.26
-2.48
AI
•
AJ
27.2
24.3
24.2
1.70
0.591
25.23
0.19
-0.04
AK
28.9
27.5
28.3
0.70
0.276
28.23
1.92
1.69
AL
25.6
24.6
24.0
0.81
0.315
24.73
-0.10
-0.33
AP
26.6
25.5
29.2
1.90
0.728
27.10
1.27
1.04
AW
5d<0
48.4
49.8
0.87
0.315
49.40
14.14
13.91
X
AZ
26.0
27.0
28.0
1.00
0.394
27.00
1.21
0.98
BA
29.3
29.0
29.9
0.46
0.177
29.40
2.59
2.37
BB
•
BC
25.2
24.5
25.3
0.44
0.158
25.00
0.05
-0.17
BG
10.6
10.4
8.6
1.10
0.394
9.87
-8.68
-&9r
X
BG
1L7
11>
12.9
0.69
0.236
12; 1Q
-7.39
-7.62
X
BH
20.6
19.2
19.9
0.70
0.276
19.90
-2.89
-3.12
BK
25.8
26.4
24.8
0.81
0.315
25.67
0.44
0.21
BM
23.3
25.5
24.0
1.12
0.433
24.27
-0.37
-0.60
BN
18.0
16.5
14.6
1.70
0.669
16.37
-4.93
-5.16
BO
25.7
25.9
27.4
0.93
0.335
26.33
0.82
0.60
C
23.6
24.9
26.3
1.35
0.532
24.93
0.02
-0.21
CA
23.6
20.6
24.1
1.89
0.689
22.77
-1.24
-1.46
CE
26.3
25.5
26.3
0.46
0.158
26.03
0.65
0.42
CG
24.3
23.7
25.4
0.86
0.335
24.47
-0.25
-0.48
CJ
24.0
24.0
25.0
0.58
0.197
24.33
-0.33
-0.56
CK
24.7
25.8
23.4
1.20
0.473
24.63
-0.16
-0.38
CM
25.8
26.0
25.6
0.20
0.079
25.80
0.52
0.29
CO
23.6
23.3
23.9
0.30
0.118
23.60
-0.75
-0.98
CQ
•
cs
27.8
26.3
27.4
0.78
0.295
27.17
1.30
1.08
cx
24.8
24.8
25.2
0.23
0.079
24.93
0.02
-0.21
D
26.1
25.7
25.8
0.21
0.079
25.87
0.55
0.33
DB
26.0
28.0
29.0
1.53
0.591
27.67
1.59
1.37
DE
21.6
21.6
21.6
0.01
0.000
21.60
-1.91
-2.14
DO
27.0
26.7
26.8
0.15
0.059
26.83
1.11
0.89
DP
21.4
22.1
20.9
0.60
0.236
21.47
-1.99
-2.21
DT
27.8
29.2
25.1
2.08
0.807
27.37
1.42
1.19
DZ
24.8
25.3
26.4
0.82
0.315
25.50
0.34
0.12
E
23.9
23.9
25.1
0.69
0.236
24.30
-0.35
-0.58
EB
24.3
24.7
25.2
0.45
0.177
24.73
-0.10
-0.33
EH
•
ER
27.7
25.4
25.4
1.33
0.453
26.17
0.73
0.50
FE
23.0
24.0
23.0
0.58
0.197
23.33
-0.91
-1.14
FJ
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
b..=
Insufficient data
x =
Determined to be an outlier
J) = Below control limit
V
-------
(f
^
EMSL-LV Performance Evaluation
: Uranium in Water, 13-Aug-1993
5/9
Uranium (Natural)
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JfK
•
FN
26.9
28.8
24.0
2.42
0.945
26.57
0.96
0.73
FZ
27.6
26.5
25.6
1.00
0.394
26.57
0.96
0.73
GG
•
GN
23.5
24.6
23.8
0.57
0.217
23.97
-0.54
-0.77
GO
29.9
30.6
33.7
2.02
0.748
31.40
3.75
3.52
IT
GQ
22.6
23.0
24.5
1.00
0.374
23.37
-0.89
-1.12
HE
24.4
24.5
24.4
0.06
0.020
24.43
-0.27
-0.50
HK
29.4
30.6
29.6
0.64
0.236
29.87
2.86
2.64
HL
27.2
27.2
27.2
0.01
0.000
27.20
1.32
1.10
HP
26.3
24.6
25.3
0.85
0.335
25.40
0.28
0.06
HU
20.5
20.2
19.9
0.30
0.118
20.20
-2.72
-2.94
I
28.5
33.5
25.9
3.86
1.945
29.30
2.54
2.31
ID
18.8
18.8
19.0
0.12
0.039
18.87
-3.49
-3.71
IE
25.1
23.3
22.4
1.37
0.532
23.60
-0.75
-0.98
J
25.5
25.1
25.5
0.23
0.079
25.37
0.27
0.04
JE
24.7
23.2
23.9
0.75
0.295
23.93
-0.56
-0.79
JK
27.7
26.1
26.9
0.80
0.315
26.90
1.15
0.92
JN
21.6
24.8
23.4
1.60
0.630
23.27
-0.95
-1.17
JP
25.1
24.7
25.8
0.56
0.217
25.20
0.17
-0.06
JS
21.5
21.4
21.4
0.06
0.020
21.43
-2.01
-2.23
JU
•
JY
25.3
25.3
25.3
0.01
0.000
25.30
0.23
0.00
K
21.9
24.2
22.5
1.19
0.453
22.87
-1.18
-1.40
KH
25.2
25.3
24.8
0.26
0.098
25.10
0.11
-0.12
L
26.1
24.6
25.1
0.76
0.295
25.27
0.21
-0.02
LA
•
LB
130
13.0
120
0.68
0.197
12.67
•7.07
-7.29
X
LG
«
LH
26.0
26.0
26.0
0.00
0.000
26.00
0.63
0.40
LM
23.8
22.2
24.9
1.36
0.532
23.63
-0.74
-0.96
LS
•
LT
29.2
28.6
26.4
1.47
0.551
28.07
1.82
1.60
LZ
24.8
24.6
24.6
0.12
0.039
24.67
-0.14
-0.37
MN
•
MS
20.5
20.9
20.7
0.20
0.079
20.70
-2.43
-2.66
N
23.2
23.1
23.4
0.15
0.059
23.23
-0.97
-1.19
NA
29.0
30.0
31.0
1.00
0.394
30.00
2.94
2.71
NC
•
NH
•
NK
24.6
24.6
25.0
0.23
0.079
24.73
-0.10
-0.33
NO
20.2
20.7
21.3
0.55
0.217
20.73
-2.41
-2.64
NT
24.3
24.9
23.6
0.65
0.256
24.27
-0.37
-0.60
OB
16.7
16.9
16.9
0.12
0.039
16.83
-4.66
-4.89
OF
27.0
24.5
25.5
1.26
0.492
25.67
0.44
0.21
• =
No data submitted
TAG SYMBOLS
tt s Above control limit
in
IS
Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
0
-------
8/9 EMSL-LV Performance Evaluation: Uranium in Water, 13-Aug-1993
Uranium (Natural)
Lab Res. 1 Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
OK
19.6
25.7
22.7
3.05
1.383
22.67
-1.29
-1.52
OS
25.4
25.4
25.4
0.01
0.000
25.40
0.28
0.06
OY
25.4
25.8
24.5
0.67
0.256
25.23
0.19
-0.04
OZ
•
P
28.9
28.4
28.1
0.40
0.158
28.47
2.06
1.83
PB
24.1
25.2
24.6
0.55
0.217
24.63
-0.16
-0.38
PC
6:7
7.1
7.0
0.45
0.177
7.13
-10.26
-10.49
X
PP
25.3
24.4
24.4
0.52
0.177
24.70
-0.12
-0.35
PQ
23.6
24.5
24.7
0.59
0.217
24.27
-0.37
-0.60
PT
25.9
25.5
23.3
1.40
0.512
24.90
0.00
-0.23
PV
23.3
21.8
22.3
0.76
0.295
22.47
-1.41
-1.64
PW
27.8
32.8
37.8
5.00
2.846
32.80
4.56
4.33
IT
PX
27.3
27.8
25.4
1.27
0.473
26.83
1.11
0.89
PY
•
Q
29.1
32.2
33.4
2.22
0.847
31.57
3.85
3.62
tr
QJ
24.0
22.7
23.8
0.70
0.256
23.50
•0.81
-1.04
QM
9-7
7.1
9.8
1.53
0.532
8.87
-9.26
-9.49
X
QQ
19.3
19.3
19.2
0.06
0.020
19.27
-3.26
-3.48
ji
QU
31.8
25.8
33.2
3.93
1.870
30.27
3.09
2.87
QX
18*1
13.2
13.2
0.06
0.020
13.17
-6.78
-7.01
X
QY
25.6
25.6
25.4
0.12
0.039
25.53
0.36
0.13
QZ
25.3
23.4
25.0
1.02
0.374
24.57
-0.20
-0.42
RA
25.0
24.3
25.0
0.40
0.138
24.77
-0.08
-0.31
RC
24.2
28.2
30.6
3.23
1.495
27.67
1.59
1.37
RF
23.2
23.0
23.1
0.10
0.039
23.10
-1.04
-1.27
RG
25.0
25.0
25.0
0.00
0.000
25.00
0.05
-0.17
RE
47,2
435:
37.2
5.06
2.846
42.63
10;23
10.01
X-
RL
•
RM
30.1
25.6
30.6
2.75
0.984
28.77
2.23
2.00
RN
28.9
28.2
28.9
0.40
0.138
28.67
2.17
1.94
RP
24.1
24.1
24.1
0.01
0.000
24.10
-0.47
-0.69
RR
24.6
24.4
26.4
1.10
0.394
25.13
0.13
-0.10
RV
•
RW
24.7
24.5
24.5
0.12
0.039
24.57
-0.20
-0.42
RZ
22.9
25.0
24.4
1.08
0.413
24.10
-0.47
-0.69
S
23.8
23.9
25.3
0.84
0.295
24.33
-0.33
-0.56
sc
27.4
25.6
27.7
1.14
0.413
26.90
1.15
0.92
3D
24.2
23.8
23.6
0.31
0.118
23.87
-0.60
-0.83
3F
26.1
27.2
27.3
0.67
0.236
26.87
1.13
0.90
SI
20.1
19.5
20.0
0.32
0.118
19.87
-2.91
-3.14
Ji
Sli
13.4
12:7
13.9
0.60
0.236
13.33
-6.68
-6.91
X
SM
•
SO
23.9
24.1
22.8
0.70
0.256
23.60
-0.75
-0.98
ss
22.5
22.3
19.4
1.73
0.610
21.40
-2.02
-2.25
ST
24.9
25.0
24.8
0.10
0.039
24.90
0.00
-0.23
• = No data submitted TAG SYMBOLS It s Above control limit
2) = Inaufficient data x = Determined to be an outlier 11 = Below controHimit_ J
-------
EMSL-LV Performance Evaluation: Uranium in Water, 13-Aug-1993 7/9
/ —
Uranium (Natural)
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
SW
23.9
25.2
27.1
1.61
0.630
25.40
0.28
0.06
SZ
24.5
24.0
24.9
0.45
0.177
24.47
-0.25
-0.48
T
27.4
29.2
30.3
1.46
0.571
28.97
2.34
2.12
TA
27.0
28.0
26.0
1.00
0.394
27.00
1.21
0.98
TD
•
TE
17.9
18.0
18.0
0.06
0.020
17.97
-4.01
-4.23
TG
23.2
23.8
23.7
0.32
0.118
23.57
-0.77
-1.00
TH
16.5
18.5
14.9
1.80
0.709
16.63
-4.78
-5.00
U
TI
24.3
25.6
23.3
1.15
0.453
24.40
-0.29
-0.52
TL
23.1
22.2
21.5
0.80
0.315
22.27
-1.52
-1.75
TP
25.2
25.4
25.2
0.12
0.039
25.27
0.21
-0.02
TQ
12.7:
14.8
12.7
1.21
0.41a
13.40
•6.64
^6.87
X
TR
1.5
2;0;
1.6
0.26
0.098
1.70
•13.40
-13.63
X
TS
25.3
25.1
25.1
0.12
0.039
25.17
0.15
-0.08
TU
28.9
30.1
27.7
1.20
0.473
28.90
2.31
2.08
TV
23.5
20.6
24.5
2.03
0.768
22.87
-1.18
-1.40
TW
m '
U
•
UB
UE
zo.4
zc>.£>
25 .y
0.26
0.098
25.60
0.40
0.17
UL
•
UN
26.5
25.3
25.6
0.62
0.236
25.80
0.52
0.29
UP
26.2
27.5
28.2
1.01
0.394
27.30
1.38
1.15
uw
25.8
26.3
25.2
0.55
0.217
25.77
0.50
0.27
uz
42.7
46.4
48.7
3,00
1.345
46.60
11.95
11;72
X
VA.
•
w
Y
26.8
26.1
27.3
0.60
0.236
26.73
1.05
0.83
Z
24.3
24.5
23.9
0.31
0.118
24.23
-0.39
-0.62
- •
Data sorted by Laboratory Avera]
f©
Average
Ta(t
Lab
Average
Tag
Lab
Average
Tag
Lab
1.70
X
TR
18.87
4
ID
22.47
PV
7.13
X
PC
19.27
a
QQ
22.67
OK
8.87
X
QM
19.87
a
si
22.77
CA
9.87
X
BG
19.90
u
BH
22.87
TV
12.10
X
BG
20.20
HU
22.87
K
12.67
X
LB
20.70
MS
23.10
RF
13.17
X
QX
20.73
NO
23.23
N
13.33
X
SL
21.00
AF
23.27
JN
13.40
X
TQ
21.40
SS
23.33
FE
16.37
u
BN
21.43
JS
23.37
GQ
16.63
u
TH
21.47
DP
23.50
QJ
16.83
11
OB
21.60
DE
23.57
TG
17.97
u
TE
22.27
TL
23.60
SO
• a No data submitted TAG SYMBOLS II 3 Above control limit
[03 Insufficient data x = Determined to be an outlier II = Below control limit
v J
-------
8/9
EMSL-LV Performance Evaluation: Uranium in Water, 13-Aug-1993
Uranium (Natural)
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
23.60
IE
25.00
RG
26.83
PX
23.60
CO
25.00
BC
26.83
DO
23.63
LM
25.10
KH
26.87
SF
23.87
SD
25.13
RR
26.90
sc
23.93
JE
25.17
TS
26.90
JK
23.97
GN
25.17
A
27.00
TA
24.10
RZ
25.20
JP
27.00
AZ
24.10
RP
25.23
OY
27.07
AE
24.23
Z
25.23
AJ
27.10
AP
24.27
PQ
25.27
TP
27.17
CS
24.27
NT
25.27
L
27.20
HL
. 24.27
BM
25.30
JY
27.30
UP
24.30
E
25.37
J
27.37
DT
24.33
S
25.40
OS
27.67
RC
24.33
CJ
25.40
HP
27.67
DB
24.40
TI
25.40
AA
28.07
LT
24.43
HE
25.40
SW
28.23
AK
24.47
sz
25.50
DZ
28.47
P
24.47
CG
25.53
QY
28.67
RN
24.57
QZ
25.60
UE
28.77
RM
24.57
RW
25.67
OF
28.90
TU
24.63
PB
25.67
BK
28.97
T
24.63
CK
25.77
UW
29.30
I
24.67
LZ
25.80
UN
29.40
BA
24.70
PP
25.80
CM
29.87
HK
24.73
NK
25.87
D
30.00
NA
24.73
EB
26.00
LH
30.27
QU
24.73
AL
26.03
CE
31.40
ir
GO
24.77
RA
26.17
ER
31.57
it
Q
24.90
ST
26.33
BO
32.80
it
PW
24.90
PT
26.57
FN
42.63
X
RK
24.93
CX
26.57
FZ
45.60
X
UZ
24.93
C
26.73
W
49.40
X
AW
% responding labs
Frequency distribution
10-
—t m
-r~
+4
+6
-4 -2 0 +2
Normalized deviation of the mean from the known value
• s No data submitted TAG SYMBOLS It = Above control limit
0 = Insufficient data x s Determined to be an outlier U = Below controljimit
-------
EMSL-LV Performance Evaluation: Uranium in Water, 13-Aug-1993
9/9
Uranium (Natural)
% responding labs Frequency distribution
10-
¦lilLji-
¦ fM.f B-| ¦ ,
-4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
United States Environmental Monitoring £;-"A 60j/,i-93/23u
Environmental Protection Systems Laboratory August 1993
Agency P.O. Box 93478
Las Vegas NV 89193-3478
Research and Development
Air Filter Performance
Evaluation Study
A Statistical Evaluation of the
August 27, 1993 Data
9312-0138nrd236
-------
Air Filter
Performance Evaluation Study
August 27, 1993
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 Air Filter; August 27, 1993.
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, 27-Aug-1993
1/33
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, 27-Aug-1993
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: Air Filter, 27-Aug-1993
3/33
Alpha Statistical Summary 204 Participants
The known value of this nuclide is 19.0 pCi/F with an expected precision of 5.0; the control limits
are 10.3 to 27.7; the warning regions are 10.3 to 13.2 and 24.8 to 27.7
44(21.6 %) Failed to respond
, 139(68.1 %) Within all limits
5(2.5 %) Outliers •' / \hv
4(2.0 %) Out of control '
*• 12(5.9 %) In warning zone
but not an outlier _
r
l I
but within control
Statistic
Respondents
Non-outliers
Mean
20.35
Grand Avg 20.00
Std. Dev.
4.67
3.27
Variance
21.78
10.70
% Coef. of Var.
22.93
16.36
% deviation of mean from known value
7.13
5.24
Norm. dev. of mean from known value
0.29
0.30
Median
19.67
19.67
% deviation of median from known value
3.51
3.51
Norm. dev. of median from known value
0.14
0.20
9(5.6 %) More than 3 norm. S.D.
12(7.5 %) Between 2 and 3 norm. S.D.
105(65.6 %) Within 1 norm. S.D.
of known value
** ...
rm±rMr34(21.3 %) Between 1 and 2 norm. S.D.
-------
4/33
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Alpha
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
19.0
19.0
18.0
0.58
0.118
18.67
-0.46
-0.12
AA
20.0
20.0
19.0
0.58
0.118
19.67
-0.11
0.23
AE
22.0
23.0
24.0
1.00
0.236
23.00
1.04
1.39
AF
24.0
24.0
23.0
0.58
0.118
23.67
1.27
1.62
AH
26.0
25.0
25.0
0.58
0.118
25.33
1.85
2.19
AI
•
AJ
19.0
19.0
18.0
0.58
0.118
18.67
-0.46
-0.12
AK
22.0
19.0
19.0
1.73
0.354
20.00
0.00
0.35
AL
17.0
14.0
18.0
2.08
0.473
16.33
-1.27
-0.92
AN
24.0
23.0
23.0
0.58
0.118
23.33
1.16
1.50
AP
18.0
17.0
17.0
0.58
0.118
17.33
-0.92
-0.58
AU
23.0
22.0
21.0
1.00
0.236
22.00
0.69
1.04
AZ
17.0
16.0
17.0
0.58
0.118
16.67
-1.15
-0.81
BA
18.0
18.0
20.0
1.15
0.236
18.67
-0.46
-0.12
BC
19.0
20.0
21.0
1.00
0.236
20.00
0.00
0.35
BG
13.0
13.0
12.0
0.58
0.118
12.67
-2.54
-2.19
BH
19.0
17.0
19.0
1.15
0.236
18.33
-0.58
-0.23
BI
21.0
18.0
18.0
1.73
0.354
19.00
-0.34
0.00
BK
18.0
19.0
20.0
1.00
0.236
19.00
-0.34
0.00
BL
21.0
22.0
20.0
1.00
0.236
21.00
0.35
0.69
BM
22.0
23.0
23.0
0.58
0.118
22.67
0.93
1.27
BO
19.0
16.0
17.0
1.53
0.354
17.33
-0.92
-0.58
BW
15.0
14.0
15.0
0.58
0.118
14.67
-1.85
-1.50
C
18.0
17.0
15.0
1.53
0.354
16.67
-1.15
-0.81
CA
16.0
17.0
18.0
1.00
0.236
17.00
-1.04
-0.69
CC
21.0
19.0
21.0
1.15
0.236
20.33
0.12
0.46
CE
21.0
20.0
20.0
0.58
0.118
20.33
0.12
0.46
CJ
17.0
17.0
17.0
0.00
0.000
17.00
-1.04
-0.69
CM
30.0
40.0
4L0
6.08
1.570
37.00
5^89
6;24 x
CO
25.0
22.0
24.0
1.53
0.354
23.67
1.27
1.62
CP
26.0
25.0
22.0
2.08
0.473
24.33
1.50
1.85
CQ
22.0
21.0
21.0
0.58
0.118
21.33
0.46
0.81
CS
•
CX
26.0
26.0
26.0
0.00
0.000
26.00
2.08
2.42
D
20.0
18.0
18.0
1.15
0.236
18.67
-0.46
-0.12
DD
20.0
20.0
18.0
1.15
0.236
19.33
-0.23
0.12
DE
20.0
21.0
21.0
0.58
0.118
20.67
0.23
0.58
DG
21.0
21.0
20.0
0.58
0.118
20.67
0.23
0.58
DH
22.0
23.0
23.0
0.58
0.118
22.67
0.93
1.27
DI
19.0
18.0
17.0
1.00
0.236
18.00
-0.69
-0.35
DJ
25.0
25.0
25.0
0.00
0.000
25.00
1.73
2.08
DL
•
DM
•
DO
21.0
21.0
21.0
0.00
0.000
21.00
0.35
0.69
DP
38.0
- 38-0
390
0.58
0.118
38.33
6.36
6;70 X
• s No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x g Determined to be an outlier J) = Below control.limit ^
-------
#
^
»•
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
5/33
Alpha
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DT
19.0
21.0
17.0
2.00
0.473
19.00
-0.34
0.00
DX
18.0
18.0
19.0
0.58
0.118
18.33
-0.58
-0.23
DY
•
E
17.0
17.0
16.0
0.58
0.118
16.67
-1.15
-0.81
EA
22.0
24.0
22.0
1.15
0.236
22.67
0.93
1.27
EB
16.0
17.0
17.0
0.58
0.118
16.67
-1.15
-0.81
EF
18.0
18.0
17.0
0.58
0.118
17.67
-0.81
-0.46
EH
22.0
20.0
22.0
1.15
0.236
21.33
0.46
0.81
EL
21.0
21.0
19.0
1.15
0.236
20.33
0.12
0.46
EW
•
EX
•
EZ
19.0
22.0
23.0
2.08
0.473
21.33
0.46
0.81
FE
18.0
17.0
18.0
0.58
0.118
17.67
-0.81
-0.46
FJ
24.0
30.0
26.0
3.06
0.709
26.67
2.31
2.66
FK
15.0
14.0
14.0
0.58
0.118
14.33
-1.96
-1.62
FL
20.0
19.0
18.0
1.00
0.236
19.00
-0.34
0.00
FO
23.0
22.0
20.0
1.53
0.354
21.67
0.58
0.92
FZ
26.0
29.0
31.0
2.52
0.591
28.67
3.00
3.35
fl
GE
•
GI
TIM
16.0
23.0
3.79
0.827
20.33
0.12
0.46
GQ
19.0
20.0
21.0
1.00
0.236
20.00
0.00
0.35
HE
18.0
17.0
17.0
0.58
0.118
17.33
-0.92
-0.58
m
29.0
26.0
26.0
1.73
0.354
27.00
2.43
2.77
HL
19.0
20.0
19.0
0.58
0.118
19.33
-0.23
0.12
HX
•
I
20.0
20.0
17.0
1.73
0.354
19.00
-0.34
0.00
1A
•
IC
21.0
21.0
20.0
0.58
0.118
20.67
0.23
0.58
IE
n
18.0
20.0
20.0
1.15
0.236
19.33
-0.23
0.12
JLX'.
IU
*
•
IY
20.0
24.0
25.0
2.65
0.591
23.00
1.04
1.39
J
18.0
18.0
19.0
0.58
0.118
18.33
-0.58
-0.23
JE
25.0
25.0
26.0
0.58
0.118
25.33
1.85
2.19
JI
22.0
21.0
22.0
0.58
0.118
21.67
0.58
0.92
JS
18.0
18.0
21.0
1.73
0.354
19.00
-0.34
0.00
JY
20.0
20.0
20.0
0.00
0.000
20.00
0.00
0.35
K
20.0
22.0
19.0
1.53
0.354
20.33
0.12
0.46
KF
•
KH
17.0
17.0
18.0
0.58
0.118
17.33
-0.92
-0.58
KL
19.0
19.0
20.0
0.58
0.118
19.33
-0.23
0.12
KM
~
KX
22.0
22.0
22.0
0.00
0.000
22.00
0.69
1.04
L
18.0
18.0
19.0
0.58
0.118
18.33
-0.58
-0.23
LA
•
• = No data submitted
TAG SYMBOLS
IT = Above control limit
0 = Insufficient data
x =
Determined to be an outlier
•tt = Below control limit
y
-------
ft
6/33
L
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
/
Alpha
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Ree. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
LE
21.0
19.0
20.0
100
0.236
20.00
0.00
0.35
LF
20.0
22.0
21.0
1.00
0.236
21.00
0.35
0.69
LM
LE
LS
>
LT
16.0
17.0
16.0
0.58
0.116
16.33
-1.27
-0.92
LZ
21.0
19.0
21.0
1.15
0.236
20.33
0.12
0.46
M
15.0
15.0
16.0
0.58
0.118
15.33
-1.62
-1.27
MA
22.0
23.0
23,0
0.58
0.118
22.67
0.93
1.27
ML
25.0
27.0
28,0
1,53
0.354
26.67
2.31
266
MN-
-•#
MP
- •
MQ
24 0
220
20.0
2.00
0.473
22.00
0.69
1.04
MS
19.0
20,0
18.0
1.00
0.236
39.00
-0.34
0.00
MV
16.0
16,0
16.0
0.00
0.000
16.00
-1.38
-1.04
N
18.0
16.0
19.0
1.53
0.354
17.67
-0.81
-0.46
NH
21.0
21.0
22.0
0.58
0.118
21.33
0.46
0.81
NJ
29.0
29.0
32.0
1.73
0.354
30.00
3.47
3.81
11
NK
16.0
15.0
15.0
0.58
0.118
15.33
-1.62
-1.27
NP
28.0
27.0
26.0
1.00
0.236
27.00
2.43
2.77
NT
19.0
20.0
18.0
1.00
0.236
1900
-0.34
0.00
NZ
19.0
17.0
19.0
1.15
0.236
18.33
-0.58
-0.23
0
16.0
17.0
18.0
1.00
0.236
17.00
-1.04
-0.69
OA
20.0
18.0
19.0
1.00
0.236
19.00
-0.34
0.00
OB
18,0
16,0
15.0
1.53
0.354
16.33
-1.27
-0,92
OK
- 1.0
1.0-
1.0
0.00
0.000
1.00
-6.68
¦6.24
X
OL
- •'
OM
16.0
17.0
18.0
1.00
0.236
17.00
-1.04
-0.69
OQ
16.0
19.0
19.0
0.58
0.118
18.67
-0.46
-0.12
¦o&*
+ -
p
15 0
15.0
15.0
0.00
0.000
15.00
-1.73
-1.39
PB
16.0
18.0
18,0
1.15
0.236
17.33
-0.92
-0.58
PC
v..
'PE' .
, • ' -
PI
27.0
25.0
26.0
1.00
0.236
26.00
2.08
2.42
PM
22.0
21.0
22.0
0.58
0.118
21.67
0.58
0.92
PP
23.0
19.0
19.0
2.31
0.473
20.33
0.12
0.46
PT
23.0
22.0
21.0
1.00
0.236
22.00
0.69
1.04
PU
•
PV
28.0
30.0
31.0
1.53
0.354
29.67
3.35
3.70
fi
PW
22.0
21.0
23.0
1.00
0,236
22.00
0-69
104
Q
18.0
19.0
19.0
0.58
0.118
18,67
-0.46
-0.12
QA
17.0
19.0
18.0
1.00
0.236
18.00
-0.69
-0.35
QB
17.0
18.0
19.0
1.00
0.236
18.00
-0.69
-0.35
QC
22.0
25.0
25.0
1.73
0.354
24.00
1.39
1.73
• s No data submitted
TAG SYMBOLS
h Above control limit
,0s Insufficient data x s Determined to be an outlier s Below control limit ]
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993 7 / 33
Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
QD
21.0
25.0
21.0
2.31
0.473
22.33
0.81
1.15
Qi
15.0
14.0
16.0
1.00
0.236
15.00
-1.73
-1.39
QJ
•
QK
•
QL
25.0
21.0
21.0
2.31
0.473
22.33
0.81
1.15
QM
18.0
18.0
21.0
1.73
0.354
19.00
-0.34
0.00
QQ
20.0
22.0
22.0
1.15
0.236
21.33
0.46
0.81
QU
20.0
18.0
17.0
1.53
0.354
18.33
-0.58
-0.23
QW
19.0
17.0
21.0
2.00
0.473
19.00
-0.34
0.00
QX
19.0
19.0
18.0
0.58
0.118
18.67
-0.46
-0.12
QZ
20.0
21.0
18.0
1.53
0.354
19.67
-0.11
0.23
R
21.0
21.0
21.0
0.00
0.000
21.00
0.35
0.69
RA
•
RC
23.0
20.0
21.0
1.53
0.354
21.33
0.46
0.81
RG
•
RH
18.0
19.0
18.0
0.58
0.118
18.33
-0.58
-0.23
RJ
16.0
16.0
15.0
0.58
0.118
15.67
-1.50
-1.15
RK
•
RN
29.0
30.0
28.0
1.00
0.236
29.00
3.12
3.46 ft
RO
18.0
19.0
23.0
2.65
0.591
20.00
0.00
0.35
RQ
• -
RS
ft
RV
28.0
26.0
26.0
1.15
0.236
26.67
2.31
2.66
RW
19.0
20.0
21.0
1.00
0.236
20.00
0.00
0.35
S
20.0
21.0
19.0
1.00
0.236
20.00
0.00
0.35
SA
sc
24.0
25.0
26.0
1.00
0.236
25.00
1.73
2.08
SD
26.0
24.0
24.0
1.15
0.236
24.67
1.62
1.96
SF
23.0
25.0
23.0
1.15
0.236
23.67
1.27
1.62
SI
21.0
22.0
21.0
0.58
0.118
21.33
0.46
0.81
SM
23.0
15.0
21.0
4.16
0.945
19.67
-0.11
0.23
SP
42;0
46.0
40.0
3:06
0.709
42.67
7*85
8.20 x
SQ
16.0
17.0
16.0
0.58
0.118
16.33
-1.27
-0.92
SR
20.0
20.0
19.0
0.58
0.118
19.67
-0.11
0.23
ss
17.0
18.0
17.0
0.58
0.118
17.33
-0.92
-0.58
sw
24.0
23.0
21.0
1.53
0.354
22.67
0.93
1.27
sz
18.0
18.0
18.0
0.00
0.000
18.00
-0.69
-0.35
T
15.0
16.0
15.0
0.58
0.118
15.33
-1.62
-1.27
TA
21.0
21.0
21.0
0.00
0.000
21.00
0.35
0.69
TB
18.0
19.0
20.0
1.00
0.236
19.00
-0.34
0.00
TD
18.0
23.0
22.0
2.65
0.591
21.00
0.35
0.69
TE
15.0
14.0
15.0
. 0.58
0.118
14.67
-1.85
-1.50
TG
21.0
20.0
20.0
0.58
0.118
20.33
0.12
0.46
TH
15.0
16.0
15.0
0.58
0.118
15.33
-1.62
-1.27
TI
17.0
16.0
17.0
0.58
0.118
16.67
-1.15
-0.81
• = No data submitted
TAG SYMBOLS
ft = Above control limit
^0 = Insufficient data x = Determined to be an outlier • U = Below control limit
^ 'J
-------
8/33
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TK
16.0
14.0
12.0
2.00
0.473
14.00
-2.08
-1.73
TL
16.0
17.0
19.0
1.53
0.354
17.33
-0.92
-0.58
TP
•
TQ
17.0
18.0
20.0
1.53
0.354
18.33
-0.58
-0.23
TR
•
TS
•
IT
•
TU
15.0
16.0
15.0
0.58
0.118
15.33
1.62
-1.27
TV
. •
TW
41;0
37.0
37.0
2.31
0.473
38.33
6.35
6.70 x
UB
• HE
• .
UJ
25.0
20.0
18.0
3.61
0.827
21.00
0.35
0.69
UK
19.0
22.0
23.0
2.08
0.473
21.33
0.46
0.81
uv
20.0
21.0
23.0
1.53
0.354
21.33
0.46
0.81
ux
17.0
20.0
19.0
1.53
0.354
18.67
-0.46
-0.12
UY
^ •
uz
17.0
18.0
19.0
1.00
0.236
18.00
-0.69
-0.35
VA
VB
18.0
19.0
16.0
1.53
0.354
17.67
-0.81
-0.46
X
19.0
19.0
19.0
0.00
0.000
19.00
-0.34
0.00
Y
•
Z
19.0
19.0
19.0
0.00
0.000
19.00
-0.34
0.00
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag
Lab
Average Tag
Lab
1.00 x
OK
16.33
AL
17.67
N
12.67
BG
16.67
TI
17.67
FE
14.00
TK
16.67
EB
17.67
EF
14.33
FK
16.67
E
18.00
UZ
14.67
TE
16.67
C
18.00
sz
14.67
BW
16.67
AZ
18.00
QB
15.00
QI
17.00
OM
18.00
QA
15.00
P
17.00
O
18.00
DI
15.33
TU
17.00
CJ
18.33
TQ
15.33
TH
17.00
CA
18.33
RH
15.33
T
17.33
TL
18.33
QU
15.33
NK
17.33
ss
18.33
NZ
15.33
M
17.33
PB
18.33
L
15.67
RJ
17.33
KH
18.33
J
16.00
MV
17.33
HE
18.33
DX
16.33
SQ
17.33
BO
18.33
BH
16.33
OB
17.33
AP
18.67
UX
16.33
LT
17.67
VB
18.67
QX
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
U = Below control limit
-------
v.
EMSL-LV Performance Evaluation:
Air Filter,
27-Aug-1993
9/33
/*-" ¦ ' ¦
Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.67
Q
20.00
AK
22.00
AU
18.67
OQ
20.33
TG
22.33
QL
18.67
D
20.33
PP
22.33
QD
18.67
BA
20.33
LZ
22.67
sw
18.67
AJ
20.33
K
22.67
MA
18.67
A
20.33
GI
22.67
EA
19.00
Z
20.33
EL
22,67
DH
19.00
X
20.33
CE
22.67
BM
19.00
TB
20.33
CC
23.00
IY
19.00
QW
20.67
IC
23.00
AE
19.00
QM
20.67
DG
23.33
AN
19.00
OA
20.67
DE
23.67
SF
19.00
NT
21.00
UJ
23.67
CO
19.00
MS
21.00
TD
23.67
AF
19.00
JS
21.00
TA
24.00
QC
19.00
I
21.00
R
24.33
CP
19.00
FL
21.00
LF
24.67
SD
19.00
DT
21.00
DO
25.00
sc
19.00
BK
21.00
BL
25.00
DJ
19.00
BI
21.33
UV
25.33
JE
19.33
KL
21.33
UK
25.33
AH
19.33
IE
21.33
SI
26.00
PI
19.33
HL
21.33
RC
26.00
CX
19.33
DD
21.33
QQ
26.67
RV
19.67
SR
21.33
NH
26.67
ML
19.67
SM
21.33
EZ
26.67
FJ
19.67
QZ
21.33
EH
27.00
NP
19.67
AA
21.33
CQ
27.00
HI
20.00
S
21.67
PM
28.67
ft
FZ
20.00
RW
21.67
JI
29.00
IT
RN
20.00
RO
21.67
FO
29.67
ft
PV
20.00
LE
22.00
PW
30.00
ft^
NJ
20.00
JY
22.00
PT
37.00
X
CM
20.00
GQ
22.00
MQ
38.33
X
TW
20.00
BC
22.00
KX
38.33
X
DP
42.67
X
SP
% responding labs
Frequency distribution
10-
T
-r
Ifl
B»l|ilaifi
— I
-4
-2 0 +2
Normalized deviation of the mean from the known value
+4
—r"
+6
• = No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x = Determined to be an outlier = Below control limit
-------
10/33
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Alpha
% responding labe
10-
Frequency distribution
-4 -2 0 +2 +d
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-lB93
11/33
Beta Statistical Summary 204 Participants
The known value of this nuclide is 47.0 pCi/F with an expected precision of 5.0; the control limits
are 38.3 to 55.7; the warning regions are 38.3 to 41.2 and 52.8 to 55.7
43(21,1 %) FelJed to respond
10(4.9 %) Outliers *
14(6.9 %) Out of control *
but not an outlier
Statistic
, 114(55.9 %> Within all limits
Respondents
23(11.3 %) In warning zone
but within control
Non-outliers
Mean
49.86
Grand Avg 49.32
Std. Dev.
7.82
4.62
Variance
61.22
21.38
% Coef. of Var.
15.69
9.37
% deviation of mean from known value
6.07
4.93
Norm. dev. of mean from known value
0.36
0.50
Median
49.00
49.00
% deviation of median from known value
4.26
4.26
Norm, dev. of median from known value
0.26
0.43
30(18.6 %) Mors than 3 norm, S.D.
, 69(42.9 %) Within 1 norm. S.D.
t
I of known value
assy
17(10.6 %) Between 2 and 3 norm. S.D.^~
45(28.0 %) Between 1 and 2 norm. S.D.
-------
C(
<\
12/33
>¦
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Beta
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
45.0
46.0
46.0
0.58
0.118
45.67
-1.26
-0.46
AA
47.0
47.0
47.0
0.00
0.000
47.00
-0.80
0.00
AE
43.0
43.0
44.0
0.58
0.118
43.33
-2.07
-1.27
AF
47.0
46.0
48.0
1.00
0.236
47.00
-0.80
0.00
AH
52.0
53.0
52.0
0.58
0.118
52.33
1.04
1.85
AI
*
AJ
47.0
45.0
46.0
1.00
0.236
46.00
-1.15
-0.35
AK
59.0
56.0
52.0
3.51
0.827
55.67
2.20
3.00
AL
50.0
50.0
49.0
0.58
0.118
49.67
0.12
0.92
AN
52.0
53.0
53.0
0.58
0.118
52.67
1.16
1.96
AP
50.0
48.0
49.0
1.00
0.236
49.00
-0.11
0.69
AU
49.0
49.0
50.0
0.58
0.118
49.33
0.01
0.81
AZ
48.0
50.0
51.0
1.53
0.354
49.67
0.12
0.92
BA
44.0
46.0
48.0
2.00
0.473
46.00
-1.15
-0.35
BC
49.0
51.0
50.0
1.00
0.236
50.00
0.24
1.04
BG
42.0
43.0
42.0
0.58
0.118
42.33
-2.42
-1.62
BH
47.0
47.0
47.0
0.00
0.000
47.00
-0.80
0.00
BI
51.0
51.0
50.0
0.58
0.118
50.67
0.47
1.27
BK
47.0
48.0
52.0
2.65
0.591
49.00
-0.11
0.69
BL
50.0
50.0
51.0
0.58
0.118
50.33
0.35
1.15
BM
48.0
51.0
50.0
1.53
0.354
49.67
0.12
0.92
BO
44.0
43.0
43.0
0.58
0.118
43.33
-2.07
-1.27
BW
49.0
47.0
49.0
1.15
0.236
48.33
-0.34
0.46
C
48.0
44.0
45.0
2.08
0.473
45.67
-1.26
-0.46
CA
47.0
47.0
48.0
0.58
0.118
47.33
-0.69
0.12
CC
47.0
45.0
46.0
1.00
0.236
46.00
-1.15
-0.35
CE
49.0
51.0
49.0
1.15
0.236
49.67
0.12
0.92
CJ
50.0
50.0
47.0
1.73
0.354
49.00
-0.11
0.69
CM
40.0
48.0
51.0
5.69
1.570
46.33
-1.03
-0.23
CO
52.0
50.0
49.0
1.53
0.354
50.33
0.35
1.15
CP
49.0
48.0
47.0
1.00
0.236
48.00
-0.46
0.35
CQ
48.0
48.0
49.0
0.58
0.118
48.33
-0.34
0.46
CS
~
CX
43.0
44.0
45.0
1.00
0.236
44.00
-1.84
-1.04
D
50.0
45.0
47.0
2.52
0.591
47.33
-0.69
0.12
DD
51.0
54.0
51.0
1.73
0.354
52.00
0.93
1.73
DE
55.0
56.0
56.0
0.58
0.118
55.67
2.20
3.00
DG
50.0
51.0
50.0
0.58
0.118
50.33
0.35
1.15
DH
50.0
51.0
52.0
1.00
0.236
51.00
0.58
1.39
DI
•
DJ
70.0
71.0
69.0
1.00
0.236
70.00
7.16
7.97
X
DL
52.0
52.0
50.0
1.15
0.236
51.33
0.70
1.50
DM
44.0
49.0
50.0
3.21
0.709
47.67
-0.57
0.23
DO
58.0
57.0
56.0
1.00
0.236
57.00
2.66
3.46
¦ft
DP
_ •
• s No data submitted
TAG SYMBOLS
ft = Above control limit
0 s Insufficient data
V-
x =
Determined to be an outlier
•li s Below control limit
: 'J
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993 13 / 33
Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DT
42.0
44.0
42.0
1.15
0.236
42.67
-2.30
-1.50
DX
46.0
48.0
47.0
1.00
0.236
47.00
-0.80
0.00
DY
' •
E
51.0
51.0
53.0
1.15
0.236
51.67
0.81
1.62
EA
55.0
58.0
57.0
1.53
0.354
56.67
2.55
3.35
ft
EB
46.0
47.0
47.0
0.58
0.118
46.67
-0.92
-0.12
EF
39.0
40.0
38.0
1.00
0.236
39.00
-3.57
-2.77
EH
54.0
50.0
53.0
2.08
0.473
52.33
1.04
1.85
EL
46.0
46.0
46.0
0.00
0.000
46.00
-1.15
-0.35
EW
57.0
56.0
58.0
1.00
0.236
57.00
2.66
3.46
ft
EX
53.0
54.0
52.0
1.00
0.236
53.00
1.28
2.08
EZ
45.0
43.0
44.0
1.00
0.236
44.00
-1.84
-1.04
"FE
•
FJ
67 0
75.0
76.0
4.93
1.120
72-67
8;09
8.89
X
FK
47.0
47.0
46.0
0.58
0.118
46.67
-0.92
-0.12
FL
51.0
55.0
53.0
2.00
0.473
53.00
1.28
2.08
FO
~
FZ
38.0
36.0
45.0
4.73
1.120
39.67
-3.34
-2.54
GE
52.0
52.0
50.0
1.15
0.236
51.33
0.70
1.50
GI
•
GQ
50.0
49.0
48.0
1.00
0.236
49.00
-0.11
0.69
HE
53.0
50.0
50.0
1.73
0.354
51.00
0.58
1.39
HI
46.0
44.0
45.0
1.00
0.236
45.00
-1.50
-0.69
HL
47.0
48.0
47.0
0.58
0.118
47.33
-0.69
0.12
HX
•
I
49.0
50.0
47.0
1.53
0.354
48.67
-0.23
0.58
ix
• ¦
IC
56.0
53.0
56.0
1.73
0.354
55.00
1.97
2.77
IE
TT
45.0
48.0
45.0
1.73
0.354
46.00
-1.15
-0.35
IU
45.0
47.0
44.0
1.53
0.354
45.33
-1.38
-0.58
IY
56.0
55.0
56.0
0.58
0.118
55.67
2.20
3.00
J
49.0
49.0
50.0
0.58
0.118
49.33
0.01
0.81
JE
57.0
60.0
59.0
1.53
0.354
58.67
3.24
4.04
ft
JI
67.0
67.0
67.0
0.00
0.000
67.00
6.13
6.93
X
JS
39.0
39.0
48.0
5.20
1.120
42.00
-2.53
-1.73
JY
56.0
57.0
54.0
1.53
0.354
55.67
2.20
3.00
K
55.0
55.0
55.0
0.00
0.000
55.00
1.97
2.77
7kf
• '
KH
48.0
48.0
48.0
0.00
0.000
48.00
-0.46
0.35
KL
58.0
54.0
57.0
2.08
0.473
56.33
2.43
3.23
ft
EM
KX
48.0
47.0
48.0
0.58
0.118
47.67
-0.57
0.23
L
50.0
50.0
50.0
0.00
0.000
50.00
0.24
1.04
LA ..
" ' -
•
• — No data submitted TAG SYMBOLS IT = Above control limit
^ 0 = Insufficient data x = Determined to be an outlier !)• = Below control limit
-------
/?
14/33
v
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LE
49.0
48.0
50.0
1.00
0.236
49.00
-0.11
0.69
LF
42.0
48.0
44.0
3.06
0.709
44.67
-1.61
-0.81.
LM
•
LR
#
LS
m
LT
45.0
44.0
44.0
0.58
0.118
44.33
-1.73
-0.92
LZ
47.0
46.0
47.0
0.58
0.118
46.67
-0.92
-0.12
M
53.0
53.0
54.0
0.58
0.118
53.33
1.39
2.19
MA
50.0
49.0
49.0
0.58
0.118
49.33
0.01
0.81
ML
72.0
72.0
75.0
1.73
0.354
73.00
8.20
9.01
y
:MN,
'•s
MP
• '
MQ
48.0
48.0
49.0
0.58
0.118
48.33
-0.34
0.46
MS
53.0
54.0
53.0
0.58
0.118
53.33
1.39
2.19
MV
44.0
43.0
44.0
0.58
0.118
43.67
-1.96
-1.15
N
48.0
44.0
50.0
3.06
0.709
47.33
-0.69
0.12
NH
48.0
52.0
53.0
2.65
0.591
51.00
0.58
1.39
NJ
47.0
49.0
48.0
1.00
0.236
48.00
-0.46
0.35
NK
44.0
44.0
45.0
0.58
0.118
44.33
-1.73
-0.92
NP
40.0
38.0
38.0
1.15
0.236
38.67
-3.69
-2.89
NT
50.0
51.0
49.0
1.00
0.236
50.00
0.24
1.04
NZ
59.0
54.0
59.0
2.89
0.591
57.33
2.78
3.58
ft
O
51.0
51.0
51.0
0.00
0.000
51.00
0.58
1.39
OA
53.0
52.0
55.0
1.53
0.354
53.33
1.39
2.19
OB
51.0
51.0
50.0
0.58
0.118
50.67
0.47
1.27
OK
•
OL
OM
45.0
46.0
51.0
3.21
0.709
47.33
-0.69
0.12
OQ
51.0
50.0
51.0
0.58
O.llfi
50.67
0.47
1.27
OS
P
48.0
47.0
47.0
0.58
0.118
47.33
-0.69
0.12
PB
48.0
49.0
50.0
1.00
0.236
49.00
-0.11
0.69
PC
•
FE
>
PI
41.0
41.0
42.0
0.58
0.118
41.33
-2.77
-1.96
PM
54.0
52.0
54.0
1.15
0.236
53.33
1.39
2.19
PP
69.0
71.0
71.0
1;15
0.236
70.33
7.28
8.08
X
PT
66.0
66.0
67,0
0.58
0.118
66.33
5.89
6.70
X
PU
" ~
PV
52.0
53.0
54.0
1.00
0.236
53.00
1.28
2.08
PW
52.0
52.0
51.0
0.58
0.118
51.67
0.81
1.62
Q
42.0
43.0
45.0
1.53
0.354
43.33
-2.07
-1.27
QA
51.0
49.0
49.0
1.15
0.236
49.67
0.12
0.92
QB
47.0
48.0
49.0
1.00
0.236
48.00
-0.46
0.35
QC
57.0
60.0
60.0
1.73
0.354
59.00
3.35
4.16
It
• s No data submitted
TAG SYMBOLS
IT = Above control limit
[ 0 s Insufficient data
x =
Determined to be an outlier
J! h Below control limit
: JJ
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993 15 / 33
Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
QD
53.0
59.0
55.0
3.06
0.709
55.67
2.20
3.00
QI
26.0
26;0
26.0
0.00
0.000
26:00
-8.08
-7.27
X
QJ
•
QK
46.0
46.0
46.0
0.00
0.000
46.00
-1.15
-0.35
QJL.
19.0
28.0
23.0
4.51
1120
23*33
-9.00
-8.20
X
QM
44.0
43.0
44.0
0.58
0.118
43.67
-1.96
-1.15
QQ
48.0
51.0
50.0
1.53
0.354
49.67
0.12
0.92
QU
56.0
59.0
53.0
3.00
0.709
56.00
2.31
3.12
It
QW
56.0
56.0
55.0
0.58
0.118
55.67
2.20
3.00
QX
52.0
52.0
51.0
0.58
0.118
51.67
0.81
1.62
QZ
58.0
58.0
56.0
1.15
0.236
57.33
2.78
3.58
ft
R
50.0
50.0
50.0
0.00
0.000
50.00
0.24
1.04
RA
•
RC
56.0
54.0
54.0
1.15
0.236
54.67
1.85
2.66
RG
*
RH
44.0
44.0
44.0
0.00
0.000
44.00
-1.84
-1.04
RJ
48.0
47.0
47.0
0.58
0.118
47.33
-0.69
0.12
RE
•
RN
41.0
43.0
44.0
1.53
0.354
42.67
-2.30
-1.50
RO
55.0
51.0
57.0
3.06
0.709
54.33
1.74
2.54
RQ
•
RS
RV
47.0
45.0
45.0
1.15
0.236
45.67
-1.26
-0.46
RW
50.0
47.0
49.0
1.53
0.354
48.67
-0.23
0.58
S
50.0
47.0
49.0
1.53
0.354
48.67
-0.23
0.58
SA
•
sc
48.0
50.0
50.0
1.15
0.236
49.33
0.01
0.81
SD
59.0
59.0
56.0
1.73
0.354
58.00
3.01
3.81
ft
SF
49.0
50.0
49.0
0.58
0.118
49.33
0.01
0.81
SI
51.0
51.0
52.0
0.58
0.118
51.33
0.70
1.50
SM
59.0
40.0
40.0
10.97
3.371
46.33
-1.03
-0.23
SP
87*0
99.0
92.0
6.03
1.795
92.67
15.02
15.82
X
SQ
190
19.0
17.0
1.15
0.236
18.33
-10;73
-9.93
X
SR
44.0
46.0
45.0
1.00
0.236
45.00
-1.50
-0.69
ss
53.0
52.0
53.0
0.58
0.118
52.67
1.16
1.96
sw
• -
sz
47.0
48.0
47.0
0.58
0.118
47.33
-0.69
0.12
T
42.0
41.0
40.0
1.00
0.236
41.00
-2.88
-2.08
TA
53.0
50.0
48.0
2.52
0.591
50.33
0.35
1.15
TB
56.0
52.0
53.0
2.08
0.473
53.67
1.51
2.31
TD
46.0
50.0
48.0
2.00
0.473
48.00
-0.46
0.35
TE
39.0
45.0
42.0
3.00
0.709
42.00
-2.53
-1.73
TG
48.0
48.0
49.0
0.58
0.118
48.33
-0.34
0.46
TH
42.0
41.0
43.0
1.00
0.236
42.00
-2.53
-1.73
TI
51.0
53.0
48.0
2.52
0.591
50.67
0.47
1.27
• =
0 =
^
No data submitted
Insufficient data
X H
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
= Below control limit
; V
-------
16/33
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TK
62.0
60.0
59.0
1.53
0.354
60.33
3.82
4.62 11
TL
49.0
49.0
51.0
1.15
0.236
49.67
0.12
0.92
TP
•
TQ
46.0
46.0
48.0
1.15
0.236
46.67
-0.92
.0.19
TR
' •
TS
•
IT
•
TU
58.0
68.0
58.0
5.77
1.345
61.33
4.16
.4.97 ft
TV
•
TW
45.0
44.0
43.0
1.00
0.236
44.00
¦1.84
-1.04
UB
•
UE
•
UJ
54.0
44.0
56.0
6.43
1.795
51.33
0.70
1.50
UK
42.0
36.0
44.0
4.16
0.945
40.67
-3.00
-2.19
UV
52.0
53.0
53.0
0.58
0.118
52.67
1.16
1.96
ux
46.0
47.0
48.0
1.00
0.236
47.00
-0.80
0.00
UY
63.0
60.0
64.0
2.08
0.473
62.33
4.51
5.31 ft
UZ
46.0
55.0
44.0
5.86
1.570
48.33
-0.34
0.46
VA
ft.
VB
>
VE
X
48.0
49.0
48.0
0.58
0.118
48.33
-0.34
0.46
Y
57.0
56.0
58.0
1.00
0.236
57.00
2.66
3.46 ft
Z
49.0
49.0
49.0
0.00
0.000
49.00
-0.11
0.69
amBosmaai
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.33
X
SQ
43.67
QM
46.00
CC
23.33
X
QL
43.67
MV
46.00
BA
26.00
X
Ql
44.00
TW
46.00
AJ
38.67
NP
44.00
RH
46.33
SM
39.00
EF
44.00
EZ
46.33
CM
39.67
FZ
44.00
CX
46.67
TQ
40.67
UK
44.33
NK
46.67
LZ
41.00
T
44.33
LT
46.67
FK
41.33
PI
44.67
LF
46.67
EB
42.00
TH
45.00
SR
47.00
UX
42.00
TE
45.00
HI
47.00
DX
42.00
JS
45.33
IU
47.00
BH
42.33
BG
45.67
RV
47.00
AF
42.67
RN
45.67
C
47.00
AA
42.67
DT
45.67
A
47.33
SZ
43.33
Q
46.00
QK
47.33
RJ
43.33
BO
46.00
IE
47.33
P
43.33
AE
46.00
EL
47.33
OM
® s No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft
s Above control limit
= Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
17/33
Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
47.33
N
49.67
CE
53.33
PM
47.33
HL
49.67
BM
53.33
OA
47.33
D
49.67
AZ
53.33
MS
47.33
CA
49.67
AL
53.33
M
47.67
KX
50.00
R
53.67
TB
47.67
DM
50.00
NT
54.33
RO
48.00
TD
50.00
L
54.67
RC
48.00
QB
50.00
BC
55.00
K
48.00
NJ
50.33
TA
55.00
IC
48.00
KH
50.33
DG
55.67
QW
48.00
CP
50.33
CO
55.67
QD
48.33
X
50.33
BL
55.67
JY
48.33
UZ
50.67
TI
55.67
IY
48.33
TG
50.67
OQ
55.67
DE
48.33
MQ
50.67
OB
55.67
AK
48.33
CQ
50.67
BI
56.00
IT
QU
48.33
BW
51.00
O
56.33
IT
KL
48.67
S
51.00
NH
56.67
ft
EA
48.67
RW
51.00
HE
57.00
ft
Y
48.67
I
51.00
DH
57.00
ft
EW
49.00
Z
51.33
UJ
57.00
ft
DO
49.00
PB
51.33
SI
57.33
ft
QZ
49.00
LE
51.33
GE
57.33
ft
NZ
49.00
GQ
51.33
DL
58.00
ft
SD
49.00
CJ
51.67
QX
58.67
ft
JE
49.00
BK
51.67
PW
59.00
ft
QC
49.00
AP
51.67
E
60.33
ft
TK
49.33
SF
52.00
DD
61.33
ft
TU
49.33
sc
52.33
EH
62.33
ft
UY
49.33
MA
52.33
AH
66.33
X
PT
49.33
J
52.67
UV
67.00
X
JI
49.33
AU
52.67
ss
70.00
X
DJ
49.67
TL
52.67
AN
70.33
X
PP
49.67
QQ
53.00
PV
72.67
X
FJ
49.67
QA
53.00
FL
73.00
X
ML
53.00
EX
92.67
X
SP
% responding labs
Frequency distribution
a
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
+6
• — No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x s Determined to be an outlier = Below control limit
^ • —JJ
-------
18/33 EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Beta
% responding labs Frequency distribution
o-ia,
-6 -4 -2 6 +2 +4
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
19/33
Strontium 90 Statistical Summary 204 Participants
The known value of this nuclide is 19.0 pCi/F with an expected precision of 5.0; the control limits
are 10.3 to 27.7; the warning regions are 10.3 to 13.2 and 24.8 to 27.7
128(62.7 %) Failed to respond ,
4(2.0 %) Outliers
2(1.0 %) Out of control
but not an outlier
Statistic
• 66(32.4 %) Within all limits
Respondents
* 4(2.0 %) In warning zone
but within control
Non-outliers
Mean
19.27
Grand Avg 18.17
Std. Dev.
5.82
3.16
Variance
33.93
9.97
% Coef. of Var.
30.22
17.38
% deviation of mean from known value
1.43
-4.39
Norm. dev. of mean from known value
0.05
-0.26
Median
18.33
18.33
% deviation of median from known value
-3.51
-3.51
Norm. dev. of median from known value
-0.11
-0.21
6(7.9 %) More than 3 norm. S.D. *«%
4(5.3 %) Between 2 and 3 norm. S.D.'
,50(65.8 %) Within 1 norm. S.D.
S of known value
16(21.1 %) Between 1 and 2 norm. S.D.
-------
(?
20/33
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Strontium 90
s
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
17.0
16.0
17.0
0.58
0.118
16.67
-0.52
-0.81
AA
19.0
15.0
18.0
2.08
0.473
17.33
-0.29
-0.58
AE
•
AF
18.0
18.0
16.0
1.15
0.236
17.33
-0.29
-0.58
AH
•
AI
•
AJ
•
AK
22.0
25.0
23.0
1.53
0.354
23.33
1.79
1.50
AL
19.0
20.0
19.0
0.58
0.118
19.33
0.40
0.12
AN
•
AP
•
AU
•
AZ
18.0
17.0
16.0
1.00
0.236
17.00
-0.40
-0.69
BA
7.0
11.0
12.0
2.65
0.591
10.00
-2.83
-3.12 II
BC
26.0
20.0
23.0
3.00
0.709
23.00
1.67
1.39
BG
18.0
18.0
18.0
0.00
0.000
18.00
-0.06
-0.35
BH
•
BI
•
BK
*
BL
28.0
24.0
28.0
2.31
0.473
26.67
2.94
2.66
BM
17.0
17.0
19.0
1.15
0.236
17.67
-0.17
-0.46
BO
18.0
17.0
18.0
0.58
0.118
17.67
-0.17
-0.46
BW
•
C
•
CA
19.0
19.0
20.0
0.58
0.118
19.33
0.40
0.12
CC
CE
•
CJ
18.0
18.0
17.0
0.58
0.118
17.67
-0.17
-0.46
CM
•
CO
•
CP
•
CQ
20.0
20.0
21.0
0.58
0.118
20.33
0.75
0.46
CS
•
CX
•
D
•
DD
19.0
19.0
14.0
2.89
0.591
17.33
-0.29
-0.58
DE
20.0
20.0
20.0
0.00
0.000
20.00
0.64
0.35
DG
18.0
18.0
20.0
1.15
0.236
18.67
0.17
-0.12
DH
21.0
19.0
18.0
1.53
0.354
19.33
0.40
0.12
DI
•
DJ
49,0
51.0
49.0
1.15
0.236
49.67
10.91
10.62 x
DL
•
DM
•
DO
18.0
19.0
18.0
0.58
0.118
18.33
0.06
-0.23
DP
~
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
Insufficient data
x =
Determined to be an outlier
•li s Below control limit
'J
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993 21 / 33
Strontium 90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DT
17.0
17.0
17.0
0.00
0.000
17.00
-0.40
-0.69
DX
•
DY
•
E
20.0
19.0
19.0
0.58
0.118
19.33
0.40
0.12
EA
9
EB
13.0
18.0
16.0
2.52
0.591
15.67
-0.87
-1.15
EF
EH
17.0
17.0
17.0
0.00
0.000
17.00
-0.40
-0.69
EL
21.0
17.0
19.0
2.00
0.473
19.00
0.29
0.00
EW
•
ESC
•
EZ
21.0
22.0
23.0
1.00
0.236
22.00
1.33
1.04
FE
•
FJ
•
FK
4o;o
40.0
37.0
1.73
0.354
39.00
7.S2
6.93 x
FL
•
FO
FZ
19.0
19.0
19.0
0.00
0.000
19.00
0.29
0.00
GE
•
01
GQ
•
HE
20.0
20.0
20.0
0.00
0.000
20.00
0.64
0.35
H
HL
«
HX
•
I
IA
•
IC
19.0
19.0
18.0
0.58
0.118
18.67
0.17
-0.12
IE
ir
IU
*
IY
J
17.0
17.0
17.0
0.00
0.000
17.00
-0.40
-0.69
JE
16.0
16.0
17.0
0.58
0.118
16.33
-0.64
-0.92
JI
JS
20.0
18.0
18.0
1.15
0.236
18.67
0.17
-0.12
JY
16.0
16.0
17.0
0.58
0.118
16.33
-0.64
-0.92
K
25.0
23.0
23.0
1.15
0.236
23.67
191
1.62
KF
•
KH
18.0
18.0
19.0
0.58
0.118
18.33
0.06
-0.23
KL
19.0
17.0
18.0
1.00
0.236
18.00
-0.06
-0.35
KM
<•
KX
19.0
17.0
19.0
1.15
0.236
18.33
0.06
-0.23
L
•
LA,
•
hi "1
• 51
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
It s Below control limit
-------
(r==
22/33
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
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
•
LS
•
LT
16.0
16.0
16.0
0.00
0.000
16.00
-0.75
-1.04
LZ
~
M
19.0
19.0
18.0
0.58
0.118
18.67
0.17
-0.12
MA
•
ML
•'
MN
•
MP
#-
MQ
17.0
22.0
23.0
3.21
0.709
20.67
0.87
0.58
MS
19.0
15.0
19.0
2.31
0.473
17.67
-0.17
-0.46
MV
N
•
NH
NJ
17.0
18.0
17.0
0.58
0.118
17.33
-0.29
-0.58
NK
•
NP
14.0
13.0
13.0
0.58
0.118
13.33
-1.67
-1.96
NT
NZ
•
0
•
OA
•
OB
OK
•
OL
•
OM
•
OQ
OS
•
P
•
PB
20.0
20.0
20.0
0.00
0.000
20.00
0.64
0.35
PC
•
PE
•
PI
PM
•
PP
18.0
16.0
19.0
1.53
0.354
17.67
-0.17
-0.46
PT
20.0
15.0
18.0
2.52
0.591
17.67
-0.17
-0.46
PU
PV
17.0
18.0
20.0
1.53
0.354
18.33
0.06
-0.23
PW
9
Q
16.0
16.0
16.0
0.00
0.000
16.00
-0.75
-1.04
QA
•
QB
* -
Sc
~
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 =
Vi
Insufficient data
x =
Determined to be an outlier
¦U h Below control limit
: JJ
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993 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
18.0
16.0
17.0
1.00
0.236
17.00
-0.40
-0.69
QK
20.0
20.0
20.0
0.00
0.000
20.00
0.64
0.35
QL
11.0
17.0
17.0
3.46
0.709
15.00
-1.10
-1.39
QM
19.0
20.0
12.0
4.36
0.945
17.00
-0.40
-0.69
QQ
•
QU
12.0
14.0
11.0
1.53
0.354
12.33
-2.02
-2.31
QW
12.0
12.0
11.0
0.58
0.118
11.67
-2.25
-2.54
QX
•
QZ
17.0
17.0
17.0
0.00
0.000
17.00
-0.40
-0.69
R
14.0
12.0
15.0
1.53
0.354
13.67
-1.56
-1.85
RA
19.0
18.0
19.0
0.58
0.118
18.67
0.17
-0.12
RC
16.0
15.0
16.0
0.58
0.118
15.67
-0.87
-1.15
RG
•
RH
33.0
33i0
33.0
0.00
0.000
33.00
5.14
4.85
X
RJ
RK
•
RN
11.0
11.0
11.0
0.00
0.000
11.00
-2.48
-2.77
RO
•
RQ
•
RS
•
RV
6i;o
34.0
10.0
25.51
10.571
35;00
5:83
5;54
X
RW
S
•
SA
•
SC
21.0
22.0
23.0
1.00
0.236
22.00
1.33
1.04
SD
23.0
24.0
21.0
1.53
0.354
22.67
1.56
1.27
SF
•
SI
20.0
19.0
18.0
1.00
0.236
19.00
0.29
0.00
SM
15.0
30.0
23.0
7.51
2.470
22.67
1.56
1.27
6P
9
SQ
•
SR
•
SS
19.0
18.0
18.0
0.58
0.118
18.33
0.06
-0.23
sw
•
sz
•
T
18.0
18.0
17.0
0.58
0.118
17.67
-0.17
-0.46
TA
18.0
19.0
20.0
1.00
0.236
19.00
0.29
0.00
TB
•
TD
9.0
6.0
11.0
2.52
0.591
8.67
-3.29
-3.58
TE
•
TG
•
TH
•
TI
20.0
22.0
19.0
1.53
0.354
20.33
0.75
0.46
in I"
• $
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ff = Above control limit
= Below control limit
-------
24/33
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Strontium 90
Lab
Res. 1
Res. 2
Res. 3
TK
TL
TP
TQ
TR
TS
IT
TU
TV
TW
UB
UE
UJ
UK
UV
UX
UY
UZ
VA
VB
VE
X
Y
Z
Exper. Rng anal Normalized deviation
Sigma (R -+¦ SR) Average (grand-avg) (known) Tag
25.0
24.0
26.
24.
19.0
23.0
3.79
0.58
0.827
0.118
23.33
23.67
1.79
1.91
1.50
1.62
21.0
20.0
21.0
0.58
0.118
20.67
0.87
0.58
19.0
18
0 18.0 0.58 0.118
18.33
0.06
-0.23
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.67
n
TD
17.00
J
18.33
SS
10.00
a
BA
17.00
EH
18.33
PV
11.00
RN
17.00
DT
18.33
KX
11.67
QW
17.00
AZ
18.33
KH
12.33
QU
17.33
NJ
18.33
DO
13.33
NP
17.33
DD
18.67
RA
13.67
R
17.33
AF
18.67
M
15.00
QL
17.33
AA
18.67
JS
15.67
RC
17.67
T
18.67
IC
15.67
EB
17.67
PT
18.67
DG
16.00
Q
17.67
PP
19.00
TA
16.00
LT
17.67
MS
19.00
SI
16.33
JY
17.67
CJ
19.00
FZ
16.33
cJE
17.67
BO
19.00
EL
16.67
A
17.67
BM
19.33
E
17.00
QZ
18.00
KL
19.33
DH
17.00
QM
18.00
BG
19.33
CA
17.00
QJ
18.33
Z
19.33
AL
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
H = Below control limit
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Strontium 90
25/33
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
20.00
QK
20.67
MQ
23.33
AK
20.00
PB
22.00
SC
23.67
TQ
20.00
HE
22.00
EZ
23.67
K
20.00
DE
22.67
SM
26.67
BL
20.33
TI
22.67
SD
33.00
X
RH
20.33
CQ
23.00
BC
35.00
X
RV
20.67
UX
23.33
TL
39.00
49.67
X
X
FK
DJ
% responding labs
Frequency distribution
10-
¦ ¦.
¦JiU fj
-6
-4 -2 0 +2
Normalized deviation of the mean from the known value
+4
+6
% responding labs Frequency distribution
10-
¦ i Tlilllllll t bImjl
I I I ..........
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS ft s Above control limit
[ 0 = Insufficient data x = Determined to be an outlier II = Below control limit
-------
\r - ^
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993 26 / 33
Cesium 137 Statistical Summary 204 Participants
The known value of this nuclide is 9.0 pCi/F with an expected precision of 5.0; the control limits
are 0.3 to 17.7; the warning regions are 0.3 to 3.2 and 14.8 to 17.7
Statistic Respondents Non-outliers
Mean
10.36
Grand Avg 10.00
Std. Dev.
2.98
1.62
Variance
8.89
2.63
% Coef. of Var.
28.80
16.22
% deviation of mean from known value
15.07
11.16
Norm. dev. of mean from known value
0.45
0.62
Median
10.00
10.00
% deviation of median from known value
11.11
11.11
Norm. dev. of median from known value
0.34
0.62
-------
?
^
27/33
\.
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Cesium 137
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
8.0
9.0
9.0
0.58
0.118
8.67
-0.46
-0.12
AA
10.0
11.0
10.0
0.58
0.118
10.33
0.11
0.46
AE
12.0
10.0
10.0
1.15
0.236
10.67
0.23
0.58
AF
13.0
11.0
11.0
1.15
0.236
11.67
0.58
0.92
AH
9.0
10.0
11.0
1.00
0.236
10.00
0.00
0.35
AI
8.0
8.0
8.0
0.00
0.000
8.00
-0.69
-0.35
AJ
•
AK
9.0
9.0
9.0
0.00
0.000
9.00
-0.35
0.00
AL
9.0
10.0
13.0
2.08
0.473
10.67
0.23
0.58
AN
13.0
15.0
11.0
2.00
0.473
13.00
1.04
1.39
AP
10.0
12.0
14.0
2.00
0.473
12.00
0.69
1.04
AU
9.0
10.0
9.0
0.58
0.118
9.33
-0.23
0.12
AZ
8.0
9.0
8.0
0.58
0.118
8.33
-0.58
-0.23
BA
10.0
8.0
9.0
1.00
0.236
9.00
-0.35
0.00
BC
7.0
7.0
8.0
0.58
0.118
7.33
-0.93
-0.58
BG
14.0
13.0
12.0
1.00
0.236
13.00
1.04
1.39
BH
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
BI
11.0
16.0
12.0
2.65
0.591
13.00
1.04
1.39
BK
•
BL
10.0
8.0
9.0
1.00
0.236
9.00
-0.35
0.00
BM
11.0
12.0
12.0
0.58
0.118
11.67
0.58
0.92
BO
8.0
8.0
7.0
0.58
0.118
7.67
-0.81
-0.46
BW
C
8.0
8.0
9.0
0.58
0.118
8.33
-0.58
-0.23
CA
11.0
10.0
9.0
1.00
0.236
10.00
0.00
0.35
CC
»
CE
8.0
7.0
8.0
0.58
0.118
7.67
-0.81
-0.46
CJ
10.0
10.0
9.0
0.58
0.118
9.67
-0.12
0.23
CM
•
CO
10.0
11.0
10.0
0.58
0.118
10.33
0.11
0.46
CP
12.0
11.0
10.0
1.00
0.236
11.00
0.34
0.69
CQ
10.0
12.0
13.0
1.53
0.354
11.67
0.58
0.92
CS
•
CX
11.0
11.0
11.0
0.00
0.000
11.00
0.34
0.69
D
11.0
16.0
9.0
3.61
0.827
12.00
0.69
1.04
DD
10.0
9.0
10.0
0.58
0.118
9.67
-0.12
0.23
DE
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
DG
10.0
10.0
12.0
1.15
0.236
10.67
0.23
0.58
DH
9.0
10.0
10.0
0.58
0.118
9.67
-0.12
0.23
DI
•
DJ
21.0
20.0
20.0
0.58
0.118
20.33
3.58
3.93
X
DL
8.0
7.0
9.0
1.00
0.236
8.00
-0.69
-0.35
DM
9.0
9.0
8.0
0.58
0.118
8.67
-0.46
-0.12
DO
10.0
13.0
15.0
2.52
0.591
12.67
0.92
1.27
DP
~
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 =
^
Insufficient data
x =
Determined to be an outlier
•11 = Below control limit
V
-------
ft
^
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
28/33
Cesium 137
\
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DT
11.0
9.0
9.0
1.15
0.236
9.67
-0.12
0 23
ds:
•
DY
•
E
10.0
o.u
1J..U
1.03
U.354
9.67
-0.12
0.23
EA
10.0
12.0
11.0
1.00
0.236
11.00
0.34
0.69
EB
9.0
9.0
9.0
0.00
0.000
9.00
-0.35
0.00
EF
•
EH
10.0
9.0
10.0
0.58
0.118
9.67
-0.12
0.23
EL
9.0
10.0
8.0
1.00
0.236
9.00
-0.35
0.00
EW
«
EX
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
EZ
10.0
10.0
11.0
0.58
0.118
10.33
0.11
0.46
FE
9.0
10.0
10.0
0.58
0.118
9.67
-0.12
0.23
FJ
•
FK
9.0
10.0
11.0
1.00
0.236
10.00
0.00
0.35
FL
11.0
10.0
12.0
1.00
0.236
11.00
0.34
0.69
FO
•
FZ
13.0
13.0
10.0
1.73
0.354
12.00
0.69
1.04
GE
8.0
7.0
9.0
1.00
0.236
8.00
-0.69
-0.35
GI
9.0
10.0
11.0
1.00
0.236
10.00
0.00
0.35
GQ
•
HE
10.0
10.0
9.0
0.58
0.118
9.67
-0.12
0.23
HI
8.0
8.0
8.0
0.00
0.000
8.00
-0.69
-0.35
HL
10.0
8.0
10.0
1.15
0.236
9.33
-0.23
0.12
HX
•
I
•
IA
IC
11.0
10.0
12.0
1.00
0.236
11.00
0.34
0.69
IE
•
n
•
IU
11.0
10.0
10.0
0.58
0.118
10.33
0.11
0.46
IX
•
J
9.0
9.0
9.0
0.00
0.000
9.00
-0.35
0.00
JE
9.0
8.0
11.0
1.53
0.354
9.33
-0.23
0.12
JI
10.0
11.0
11.0
0.58
0.118
10.67
0.23
0.58
JS
10.0
11.0
11.0
0.58
0.118
10.67
0.23
0.58
JY
8.0
10.0
9.0
1.00
0.236
9.00
-0.35
0.00
K
8.0
9.0
9.0
0.58
0.118
8.67
-0.46
-0.12
KF
•
KH
11.0
10.0
10.0
0.58
0.118
10.33
0.11
0.46
KL
11.0
15.0
11.0
2.31
0.473
12.33
0.81
1.15
KM
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
KX
11.0
10.0
10.0
0.58
0.118
10.33
0.11
0.46
L
9.0
7.0
9.0
1.15
0.236
8.33
-0.58
-0.23
LA,
• —
No data submitted
TAG SYMBOLS
ft s Above control limit
l0-
Insufficient data
x =
Determined to be an outlier
U = Below control limit J
-------
29 / 33 EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Cesium 137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LE
16.0
12.0
12.0
2.31
0.473
13.33
1.15
1.50
LF
11.0
11.0
10.0
0.58
0.118
10.67
0.23
0.58
LM
•
LE
•
LS
•
LT
12.0
12.0
12.0
0.00
0.000
12.00
0.69
1.04
LZ
•»
M
1U.U
IU.U
11.0
0.58
0.118
10.33
0.11
0.46
MA
8.0
9.0
10.0
1.00
0.236
9.00
-0.35
0.00
ML
12.0
11.0
12.0
0.58
0.118
11.67
0.58
0.92
MN
•
MP
J.1.U
IU.U
13.0
1.53
0.354
11.33
0.46
0.81
MQ
10.0
11.0
11.0
0.58
0.118
10.67
0.23
0.58
MS
9.0
11.0
9.0
1.15
0.236
9.67
-0.12
0.23
MV
11.0
12.0
14.0
1.53
0.354
12.33
0.81
1.15
N
9.0
9.0
9.0
0.00
0.000
9.00
-0.35
0.00
NH
10.0
11.0
10.0
0.58
0.118
10.33
0.11
0.46
NJ
9.0
9.0
8.0
0.58
0.118
8.67
-0.46
-0.12
NK
8.0
8.0
9.0
0.58
0.118
8.33
-0.58
-0.23
NP
11.0
12.0
11.0
0.58
0.118
11.33
0.46
0.81
NT
•
NZ
7.0
10.0
10.0
1.73
0.354
9.00
-0.35
0.00
O
9.0
9.0
10.0
0.58
0.118
9.33
-0.23
0.12
OA
11.0
11.0
9.0
1.15
0.236
10.33
0.11
0.46
OB
6.0
6.0
6.0
0.00
0.000
6.00
-1.39
-1.04
OK
~
OL
•
OM
•
OQ
•
OS
•
P
JL2.U
11.0
9.0
1.53
0.354
10.67
0.23
0.58
PB
9.0
10.0
10.0
0.58
0.118
9.67
-0.12
0.23
PC
•
PE
•
PI
8.0
8.0
8.0
0.00
0.000
8.00
-0.69
-0.35
PM
9.0
8.0
7.0
1.00
0.236
8.00
-0.69
-0.35
PP
12.0
9.0
9.0
1.73
0.354
10.00
0.00
0.35
PT
14.0
14.0
13.0
0.58
0.118
13.67
1.27
1.62
PU
+
PV
11.0
12.0
13.0
1.00
0.236
12.00
0.69
1.04
PW
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
Q
10.0
11.0
12.0
1.00
0.236
11.00
0.34
0.69
QA
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
QB
8.0
6.0
6.0
1.15
0.236
6.67
-1.16
-0.81
QC
• = No data submitted TAG SYMBOLS ft = Above control limit
. 0 = Insufficient data x = Determined to be an outlier Jj- = Below contrpl limit
-------
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993 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
12.0
15.0
15.0
1.73
0.354
14.00
1.38
1.73
QI
•
QJ
13.0
10.0
11.0
1.53
0.354
11.33
0.46
0.81
QK
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
QL
7.0
9.0
9.0
1.15
0.236
8.33
-0.58
-0.23
QM
10.0
9.0
11.0
1.00
0.236
10.00
0.00
0.35
QQ
Qii
33.0
290
31.0
2.00
0.473
31.00
7;27
.7.62 x
QW
300
29.0
29 f0
0.68
0.118
29.33
6i70
7.04 x
QX
«
QZ
9.0
9.0
10.0
0.58
0.118
9.33
-0.23
0.12
R
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
RA
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
RC
10.0
8.0
9.0
1.00
0.236
9.00
-0.35
0.00
RG
•
RH
8.0
9.0
10.0
1.00
0.236
9.00
-0.35
0.00
RJ
RK
•
RN
8.0
10.0
10.0
1.15
0.236
9.33
-0.23
0.12
RO
11.0
10.0
9.0
1.00
0.236
10.00
0.00
0.35
RQ
•
as
RV
14.0
14.0
10.0
2.31
0.473
12.67
0.92
1.27
RW
s
9.0
7.0
9.0
1.15
0.236
8.33
-0.58
-0.23
SA
•
sc
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
SD
10.0
11.0
9.0
1.00
0.236
10.00
0.00
0.35
SF
10.0
11.0
17.0
3.79
0.827
12.67
0.92
1.27
SI
10.0
8.0
9.0
1.00
0.236
9.00
-0.35
0.00
SM
6.0
5.0
6.0
0.58
0.118
5.67
-1.50
-1.15
SP
•
m
•
SR
8.0
8.0
12.0
2.31
0.473
9.33
-0.23
0.12
ss
8.0
9.0
8.0
0.58
0.118
8.33
-0.58
-0.23
sw
9.0
10.0
11.0
1.00
0.236
10.00
0.00
0.35
sz
10.0
9.0
9.0
0.58
0.118
9.33
-0.23
0.12
T
9.0
11.0
10.0
1.00
0.236
10.00
0.00
0.35
TA
10.0
12.0
11.0
1.00
0.236
11.00
0.34
0.69
TB
12.0
11.0
11.0
0.58
0.118
11.33
0.46
0.81
TD
6.0
7.0
8.0
1.00
0.236
7.00
-1.04
-0.69
TE
13.0
12.0
12.0
0.58
0.118
12.33
0.81
1.15
TG
11.0
10.0
9.0
1.00
0.236
10.00
0.00
0.35
TH
15.0
16.0
14.0
1.00
0.236
15.00
1.73
2.08
TI
10.0
11.0
9.0
1.00
0.236
10.00
0.00
0.35
• =
0 =
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
¦li 2 Below control limit
-------
((
^
31/33
EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
f Cesium 137
>
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TK
13.0
10.0
8.0
2.52
0.591
10.33
0.11
0.46
TL
8.0
8.0
8.0
0.00
0.000
8.00
-0.69
-0.35
TP
10.0
10.0
10.0
0.00
0.000
10.00
0.00
0.35
TQ
10.0
9.0
10.0
0.58
0.118
9.67
-0.12
0.23
TR
•
TS
IT
•
TU
12.0
12.0
11.0
0.58
0.118
11.67
0.58
0.92
TV
•
TW
•
UB
UE
•
UJ
•
UK
21.0
9.0
9.0
6.93
1.795
13.00
1.04
1.39
UV
9.0
10.0
11.0
1.00
0.236
10.00
0.00
0.35
UX
5.0
6.0
6.0
0.58
0.118
5.67
-1.50
-1.15
UY
9.0
9.0
9.0
0.00
0.000
9.00
-0.35
0.00
UZ
•
VA
•
VB
10.0
11.0
10.0
0.58
0.118
10.33
0.11
0.46
VE
11.0
13.0
13.0
1.15
0.236
12.33
0.81
1.15
X
8.0
8.0
8.0
0.00
0.000
8.00
-0.69
-0.35
Y
9.0
9.0
10.0
0.58
0.118
9.33
-0.23
0.12
Z
9.0
8.0
9.0
0.58
0.118
8.67
-0.46
-0.12
lV.'* -
• -jwqb-.lt
frswrw.;.1'
f
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
5.67
UX
8.33
QL
9.00
J
5.67
SM
8.33
NK
9.00
EL
6.00
OB
8.33
L
9.00
EB
6.67
QB
8.33
C
9.00
BL
7.00
TD
8.33
AZ
9.00
BA
7.33
BC
8.67
Z
9.00
AK
7.67
CE
8.67
NJ
9.33
Y
7.67
BO
8.67
K
9.33
SZ
8.00
X
8.67
DM
9.33
SR
8.00
TL
8.67
A
9.33
RN
8.00
PM
9.00
UY
9.33
QZ
8.00
PI
9.00
SI
9.33
O
8.00
m
9.00
RH
9.33
JE
8.00
GE
9.00
RC
9.33
HL
8.00
DL
9.00
NZ
9.33
AU
8.00
AI
9.00
N
9.67
TQ
8.33
SS
9.00
MA
9.67
PB
8.33
s
9.00
JY
9.67
MS
• s No data submitted
TAG SYMBOLS
ff = Above control limit
0 = Insufficient data
X -
Determined to be an outlier
U = Below control limit
»
-y
-------
(f
^
k
EMSL-LV Performance Evaluation:
Air Filter,
27-Aug-1993
32/33
i
/
Cesium 137
->
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.67
HE
10.00
BH
11.33
NP
9.67
FE
10.00
AH
11.33
MP
9.67
EH
10.33
VB
11.67
TU
9.67
E
10.33
TK
11.67
ML
9.67
DT
10.33
OA
11.67
CQ
9.67
DH
10.33
NH
11.67
BM
9.67
DD
10.33
M
11.67
AF
9.67
CJ
10.33
KX
12.00
PV
10.00
UV
10.33
KH
12.00
LT
10.00
TP
10.33
IU
12.00
FZ
10.00
TT
10.33
EZ
12.00
D
10.00
TG
10.33
CO
12.00
AP
10.00
T
10.33
AA
12.33
VE
10.00
SW
10.67
P
12.33
TE
10.00
SD
10.67
MQ
12.33
MV
10.00
sc
10.67
LF
12.33
KL
10.00
RO
10.67
JS
12.67
SF
10.00
RA
10.67
JI
12.67
RV
10.00
R
10.67
DG
12.67
DO
10.00
QM
10.67
AL
13.00
UK
10.00
QK
10.67
AE
13.00
BI
10.00
QA
11.00
TA
13.00
BG
10.00
PW
11.00
Q
13.00
AN
10.00
PP
11.00
IC
13.33
LE
10.00
KM
11.00
FL
13.67
PT
10.00
GI
11.00
EA
14.00
QD
10.00
FK
11.00
CX
15.00
TH
10.00
EX
11.00
CP
20.33
X
DJ
10.00
DE
11.33
TB
29.33
X
QW
10.00
CA
11.33
QJ
31.00
X
QU
% responding labs
Frequency distribution
20-
10-
0
~6~
-I 1 I T" ^
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
+6
• = No data submitted
0 ^ Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
Tt s Above control limit
II == Below control limit
-------
33 / 33 EMSL-LV Performance Evaluation: Air Filter, 27-Aug-1993
Cesium 137
% responding labs Frequency distribution
Normalized deviation of the mean from the grand average
-------
United States
Environmental Protection
Agency
Research and Development
Environmental Monitoring
Systems Laboratory
P.O. Box 93478
Las Vegas NV 89193-3478
EPA 600/R-93/227
December 1993
Radium in Water
Performance
Evaluation Study
A Statistical Evaluation of the
September 17, 1993 Data
9312-0138nnJ227
-------
Radium in Water
Performance Evaluation Study
September 17, 1993
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 VEOAS
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 Radium in Water; September 17, 1993.
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.
-------
' -——— A
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993 1/15
^ J
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.
-------
2/15
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
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: Radium in Water, 17-Sep-1993 3/15
~~~~\
Radium-226 Statistical Summary 160 Participants
The known value of this nuclide is 14.9 pCi/1 with an expected precision of 2.2; the control limits
are 11.1 to 18.7; the warning regions are 11.1 to 12.4 and 17.4 to 18.7
Statistic Respondents Non-outliers
Mean
15.04
Grand Avg 14.73
Std. Dev.
3.22
1.84
Variance
10.40
3.39
% Coef. of Var.
21.44
12.49
% deviation of mean from known value
0.96
-1.13
Norm. dev. of mean from known value
0.04
-0.09
Median
15.07
15.03
% deviation of median from known value
1.12
0.89
Norm. dev. of median from known value
0.05
0.07
-------
4/15 EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
^
Radium-226
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
15.7
15.4
15.6
0.15
0.081
15.57
0.66
0.52
AE
15.4
15.2
15.5
0.15
0.081
15.37
0.50
0.37
AF
15.2
15.3
15.2
0.06
0.027
15.23
0.39
0.26
AI
•
AJ
14.9
15.6
15.7
0.44
0.215
15.40
0.53
0.39
AK
13.6
13.8
14.4
0.42
0.215
13.93
-0.63
-0.76
AL
14.4
15.3
14.4
0.52
0.242
14.70
-0.03
-0.16
AP
14.8
15.1
15.5
0.35
0.188
15.13
0.32
0.18
AW
14.8
15.6
15.7
0.49
0.242
15.37
0.50
0.37
AZ
14.3
14.1
14.5
0.20
0.107
14.30
-0.34
-0.47
BA
14.8
15.7
14.7
0.55
0.268
15.07
0.26
0.13
BC
15.5
15.9
15.9
0.23
0.107
15.77
0.81
0.68
BG
15.5
16.9
16.4
0.71
0.376
16.27
1.21
1.08
BH
13.2
13.7
14.3
0.55
0.295
13.73
-0.79
-0.92
BK
13.7
14.5
14.6
0.49
0.242
14.27
-0.37
-0.50
BL
•
BM
13.3
14.9
14.3
0.81
0.430
14.17
-0.45
-0.58
BN
16.2
14.3
14.8
0.98
0.510
15.10
0.29
0.16
BO
15.4
15.4
14.9
0.29
0.134
15.23
0.39
0.26
C
15.4
14.2
12.0
1.72
0.913
13.87
-0.68
-0.81
CA
16.1
15.2
16.5
0.67
0.349
15.93
0.95
0.81
CE
14.1
13.9
14.8
0.47
0.242
14.27
-0.37
-0.50
CG
14.2
14.5
17.6
1.88
0.913
15.43
0.55
0.42
CJ
16.0
15.0
15.0
0.58
0.268
15.33
0.47
0.34
CK
•
CQ
•
cs
16.1
16.5
14.6
1.00
0.510
15.73
0.79
0.66
cx
•
DB
15.0
14.4
15.6
0.60
0.322
15.00
0.21
0.08
DE
14.1
14.2
14.2
0.06
0.027
14.17
-0.45
-0.58
DT
15.2
15.3
15.1
0.10
0.054
15.20
0.37
0.24
DZ
15.3
14.8
15.0
0.25
0.134
15.03
0.24
0.10
E
14.3
14.5
14.2
0.15
0.081
14.33
-0.31
-0.45
EB
15.0
15.2
14.7
0.25
0.134
14.97
0.18
0.05
EH
•
EO
14.8
15.5
15.3
0.36
0.188
15.20
0.37
0.24
EP
13.6
14.3
14.1
0.36
0.188
14.00
-0.58
-0.71
ER
15.6
15.8
15.6
0.12
0.054
15.67
0.74
0.60
FE
16.1
14.8
14.5
0.85
0.430
15.13
0.32
0.18
FN
15.8
15.0
15.5
0.40
0.215
15.43
0.55
0.42
FP
22.9
21.9
20.4
1.26
0.671
21.73
5.51
5.38
X
FZ
9.7
8.9
12.0
1.61
0.832
10.20
-3.57
-3.70
GG
•
GN
2.8
3;1
2.9
0.15
0.081
2,93
•9.29
-9.42
X
GO
14.3
14.3
15.0
0.40
0.188
14.53
-0.16
-0.29
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
in
0
Insufficient data
x =
Determined to be an outlier
11 s Below control limit
'J
-------
ft
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
^
5/15
Radium-226
N
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
GQ
12.9
13.2
13.4
0.25
0.134
13.17
-1.23
-1.36
HE
16.8
16.1
16.8
0.40
0.188
16.57
1.44
1.31
HK
14.8
14.4
15.0
0.31
0.161
14.73
0.00
-0.13
HL
14.2
13.1
13.8
0.56
0.295
13.70
-0.81
-0.94
HP
15.9
16.5
18.7
1.47
0.752
17.03
1.81
1.68
HU
7.4
7.3
12.
0.10
0.054
7.30
-5.85
-5.98
X
I
14.6
13.6
15.3
0.85
0.456
14.50
-0.18
-0.31
IA
•
ID
19.3
19.0
19.5
0.25
0.134
19.27
3.57
3.44
ft
J
14.8
15.7
15.0
0.47
0.242
15.17
0.34
0.21
JE
20.2
6.4
20.0
7.91
6.153
15.53
0.63
0.50
JG
17.1
18.4
15.1
1.66
0.886
16.87
1.68
1.55
JN
16.5
16.6
13.3
1.88
0.886
15.47
0.58
0.45
JS
14.0
14.0
15.0
0.58
0.268
14.33
-0.31
-0.45
JX
14.6
15.8
15.1
0.60
0.322
15.17
0.34
0.21
JY
16.9
17.7
12.0
3.09
2.010
15.53
0.63
0.50
K
12.5
13.8
12.5
0.75
0.349
12.93
-1.42
-1.55
KF
•
KH
14.6
13.6
13.4
0.64
0.322
13.87
-0.68
-0.81
KL
15.5
17.8
16.0
1.21
0.618
16.43
1.34
1.21
KZ
13.6
13.5
13.7
0.10
0.054
13.60
-0.89
-1.02
L
10.1
11.1
10.2
0.55
0.268
10.47
-3.36
-3.49
U
LA
•
LB
12.2
12.3
12.4
0.10
0.054
12.30
-1.91
-2.05
LM
12.7
12.6
12.5
0.10
0.054
12.60
-1.68
-1.81
LS
•
LT
13.0
12.5
142
0.87
0.456
13.23
-1.18
-1.31
LZ
15.2
15.2
15.0
0.12
0.054
15.13
0.32
0.18
MN
•
MS
17.3
17.3
16.9
0.23
0.107
17.17
1.92
1.78
MY
•
N
15.1
16.2
15.4
0.57
0.295
15.57
0.66
0.52
NG
13.5
13.7
13.5
0.12
0.054
13.57
-0.92
-1.05
NH
12.6
13.7
15.9
1.68
0.886
14.07
-0.52
-0.66
NO
14.9
15.1
15.7
0.42
0.215
15.23
0.39
0.26
NT
14.8
15.4
15.9
0.55
0.295
15.37
0.50
0.37
OB
18.6
16.6
18.6
1.15
0.537
17.93
2.52
2.39
OF
12.7
16.5
16.7
.2.25
1.141
15.30
0.45
0.31
OK
•
OS
•
OX
15.3
15.2
14.9
0.21
0.107
15.13
0.32
0.18
OY
14.9
15.5
15.0
0.32
0.161
15.13
0.32
0.18
OZ
•
P
17.2
16.6
17.3
0.38
0.188
17.03
1.81
1.68
PB
15.8
15.8
15.7
0.06
0.027
15.77
0.81
0.68
• =
No data submitted
TAG SYMBOLS
IT 3 Above control limit
0 "
^
Insufficient data
x =
Determined to be an outlier
= Below control limit
o
-------
—
6/15 EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
Radium-226
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PC
9.7
10.4
11.1
0.70
0.376
10.40
-3.41
-3.54
PG
16.7
17.1
16.7
0.23
0.107
16.83
1.65
1.52
PP
• ,
PT
18.2
15.2
14.4
2.00
1.039
15.93
0.95
0.81
PV
19.3
18.5
17.9
0.70
0.376
18.57
3.02
2.89
PW
11.4
17.8
14.1
3.21
2.368
14.43
-0.24
-0.37
PX
14.8
14.6
14.9
0.15
0.081
14.77
0.03
-0.10
FY
•
Q
16.4
15.9
18.4
1.32
0.671
16.90
1.71
1.57
QB
14.9
153
14.9
0.23
0107
15.03
0.24
0.10
QJ
QU
9.3
10.4
9.9
0.55
0.295
9.87
-3.83
-3.96
if
QX
23.6
25.8
26.7
1.59
0.832
25.37
8;37
8.24
X
QY
•
QZ
14.3
13.3
13.8
0.50
0.268
13.80
-0.73
-0.87
R
14.2
14.4
13.0
0.76
0.376
13.87
-0.68
-0.81
RA
16.7
16.5
15.1
0.87
0.430
16.10
1.08
0.94
RC
14.3
15.7
14.5
0.76
0.376
14.83
0.08
-0.05
RD
10.0
9.4
8.8
0.60
0.322
9.40
-4.20
-4.33
RF
18.6
18.3
21.1
1.54
0.752
19.33
3.62
3.49
ft
RL
• ¦ .
RM
15.5
15.7
14.3
0.76
0.376
15.17
0.34
0.21
RN
18.0
17.7
18.7
0.51
0.268
18.13
2.68
2.55
RV
26.5
2&fl
299
2.27
1.294
21M
9.92
9.79;
x *
RW
13.0
13.9
15.3
1.16
0.618
14.07
-0.52
-0.66
RX
' •
RZ
14.2
14.5
14.7
0.25
0.134
14.47
-0.21
-0.34
S
16.0
16.0
16.3
0.17
0.081
16.10
1.08
0.94
8A
V
SC
14.6
15.5
16.8
1.11
0.591
15.63
0.71
0.58
SD
14.5
13.4
14.5
0.64
0.295
14.13
-0.47
-0.60
SF
14.8
14.0
16.0
1.01
0.537
14.93
0.16
0.03
SI
14.3
11.3
11.8
1.61
0.805
12.47
-1.78
-1.92
SM
13.3
12.3
13.0
0.51
0.268
12.87
-1.47
-1.60
SS
14.3
13.9
12.6
0.89
0.456
13.60
-0.89
-1.02
ST
15.1
15.1
15.1
0.01
0.000
15.10
0.29
0.16
SW
138
11.4
13.0
1.22
0.644
12.73
-1.57
-1.71
sx
•
SZ
14.8
14.5
15.5
0.51
0.268
14.93
0.16
0.03
T
15.2
15.0
15.2
0.12
0.054
15.13
0.32
0.18
TA
11.2
9.6
10.5
0.80
0.430
10.43
-3.38
-3.52
TD
13.4
14.1
14.4
0.51
0.268
13.97
-0.60
-0.73
TG
14.0
13.8
15.0
0.64
0.322
14.27
-0.37
-0.50
TH
30.4
26.1
29.7
2.31
1.294
28.73
11.02
10.89
X
TI
19.5
18.6
20.5
0.95
0.510
19.53
3.78
3.65
It
• =
No data submitted
TAG SYMBOLS
It — Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
U = Below control limit
0
-------
f(
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
^
7/15
Radium-226
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average (grand-a vg)
(known) Tag
TK
-
•
TL
7.7
10.5
8.5
1.44
0.752
8.90 -4.59
-4.72
Ji
TN
12.3
11.9
12.8
0.45
0.242
12.33 -1.89
-2.02
TP
•-
TQ
16.1
14.0
15.0
1.05
0.564
15.03 0.24
0.10
TR
• .
TS
• ¦
TU
14.4
14.5
14.4
0.06
0.027
14.43 -0.24
-0.37
TV
TW
«
U
14.1
12.9
13.3
0.61
0.322
13.43 -1.02
-1.15
]\mi
•
uc
•
UE
13.4
12.7
14.6
0.96
0.510
13.57 -0.92
-1.05
UI
14.2
15.4
15.6
0.76
0.376
15.07 0.26
0.13
UL
11.7
11.4
11.6
0.15
0.081
11.57 -2.49
-2.62
UN*
29.7
28;8
27.8
1;11
0.591
28.67 10;97
10;84
X
UP
15.5
16.4
16.7
0.62
0.322
16.20 1.16
1.02
UQ
13.0
15.0
14.0
1.00
0.537
14.00 -0.58
-0.71
US
»
uw
15.8
14.4
14.3
0.84
0.403
14.83 0.08
-0.05
VA
«
w
15.2
15.8
15.4
0.31
0.161
15.47 0.58
0.45
X
Y
18.7
16.2
15.9
1.54
0.752
16.93 1.73
1.60
•
Data sorted by Laboratory Averaj
Average
Tag
Lab
Average
Tag
Lab
Average Tag
T.ab
2.93
X
GN
13.17
GQ
14.07
RW
7.30
X
HU
13.23
LT
14.07
NH
8.90
U
TL
13.43
U
14.13
SD
9.40
a
RD
13.57
UE
14.17
DE
9.87
Ji
QU
13.57
NG
14.17
BM
10.20
u
FZ
13.60
SS
14.27
TG
10.40
u
PC
13.60
KZ
14.27
CE
10.43
n
TA
13.70
HL
14.27
BK
10.47
n
L
13.73
BH
14.30
AZ
11.57
UL
13.80
QZ
14.33
JS
12.30
LB
13.87
R
14.33
E
12.33
TN
13.87
C
14.43
TU
12.47
SI
13.87
KH
14.43
PW
12.60
LM
13.93
AK
14.47
RZ
12.73
SW
13.97
TD
14.50
I
12.87
SM
14.00
UQ
14.53
GO
12.93
K
14.00
EP
14.70
AL
• = No data submitted
TAG SYMBOLS
It s Above control limit
0 = Insufficient data
x =
= Determined to be an outlier
s Below control limit
'J
-------
8/15
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
14.73
HK
15.20
EO
15.93
CA
14.77
PX
15.20
DT
16.10
S
14.83
UW
15.23
NO
16.10
RA
14.83
RC
15.23
BO
16.20
UP
14.93
sz
15.23
AF
16.27
BG
14.93
SF
15.30
OF
16.43
KL
14.97
EB
15.33
CJ
16.57
HE
15.00
DB
15.37
NT
16.83
PG
15.03
QB
15.37
AE
16.87
JG
15.03
TQ
15.37
AW
16.90
Q
15.03
DZ
15.40
AJ
16.93
X
15.07
UI
15.43
FN
17.03
P
15.07
BA
15.43
CG
17.03
HP
15.10
ST
15.47
W
17.17
MS
15.10
BN
15.47
JN
17.93
OB
15.13
T
15.53
JY
18.13
RN
15.13
OY
15.53
-------
==^
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993 9/15
Radium-226
% responding labs Frequency distribution
10-
Jtol
' l *" . ~ . * | *" I I " T —— i
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
=PN
EMSLrLV Performance Evaluation: Radium in Water, 17-Sep-1993 10 / 15
Radium-228 Statistical Summary 160 Participants
The known value of this nuclide is 20.4 pCi/1 with an expected precision of 5.1; the control limits
are 11.6 to 29.2; the warning regions are 11.6 to 14.5 and 26.3 to 29.2
Statistic Respondents Non-outliers
Mean
19.57
Grand Avg 19.57
Std. Dev.
5.09
5.09
Variance
25.95
25.95
% Coef. of Var.
26.04
26.04
% deviation of mean from known value
-4.09
-4.09
Norm. dev. of mean from known value
-0.16
-0.16
Median
20.08
20.08
% deviation of median from known value
-1.55
-1.55
Norm. dev. of median from known value
-0.06
-0.06
-------
11/15 EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
Radium-228
Lah
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
35.3
31.6
25.2
5.11
1.323
30.70
3.78
3.50
n
AE
20.5
20.7
22.8
1.27
0.266
21.33
0.60
0.32
AF
19.2
19.6
22.2
1.63
0.347
20.33
0.26
-0.02
AI
17.2
18.2
22.6
2.87
0.625
19.33
-0.08
-0.36
AJ
19.3
21.2
18.2
1.52
0.347
19.57
0.00
-0.28
AK
20.9
22.6
22.9
1.08
0.232
22.13
0.87
0.59
AL
25.1
25.3
24.7
0.31
0.069
25.03
1.86
1.57
AP
17.5
19.0
18.3
0.75
0.174
18.27
-0.44
-0.72
AW
18.8
20.1
20.0
0.72
0.151
19.63
0.02
-0.26
AZ
17.2
19.3
18.1
1.05
0.243
18.20
-0.46
-0.75
BA
11.2
10.9
10.3
0.46
0.104
10.80
-2.98
-3.26
n
BC
18.1
19.5
18.5
0.72
0.162
18.70
-0.29
-0.58
BG
•
BH
22.1
20.1
21.2
1.00
0.232'
21.13
0.53
0.25
BK
22.1
21.8
18.1
2.23
0.463
20.67
0.37
0.09
BL
#.
BM
20.1
19.4
20.4
0.51
0.116
19.97
O.U
-0.15
BN
*
BO
2 J.4
21.5
20.0
0.84
0.174
20.97
0.48
0.19
C
25.4
24.5
23.6
0.90
0.208
24.50
1.68
1.39
CA
22.8
19.9
20.2
1.59
0.336
20.97
0.48
0.19
CE
21.0
21.9
21.2
0.47
0.104
21.37
0.61
0.33
CG
22.7
18.2
21.4
2.32
0.521
20.77
0.41
0.12
CJ
20.0
22.0
20.0
1.15
0.232
20.67
0.37
0.09
CK
*
CQ
•
cs
18.1
18.1
18.2
0.06
0.012
18.13
-0.49
-0.77
cx
•
DB
lb.5
15.8
16.5
0.40
0.081
16.27
-1.12
-1.40
DE
21.9
21.9
22.0
0.06
0.012
21.93
0.80
0.52
DT
17.4
20.8
20.0
1.78
0.394
19.40
-0.06
-0.34
DZ
20.6
20.5
20.7
0.10
0.023
20.60
0.35
0.07
u
EB
7.4
5.9
7.5
0.90
0.185
6.93
-4.29
-4.57
-•
EH
•
EO
20.5
20.9
20.0
0.45
0.104
20.47
0.31
0.02
EP
18.2
18.6
19.0
0.40
0.093
18.60
-0.33
-0.61
ER
•
FE
•
FN
20.3
21.2
21.4
0.59
0.127
20.97
0.48
0.19
FP
11.6
10.8
12.3
0.75
0.174
11.57
-2.72
-3.00
FZ
150
10.0
11.0
2.65
0.579
12.00
-2.57
-2.85
GG
•
GN
4.7
5.2
5.5
0.40
0.093
5.13
-4.90
-5.18
u
GO
14.0
14.0
0-
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U ~ Below control limit
-------
/?
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1903
^
12/15
Radium-228
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
GQ
26.7
27.5
28.2
0.75
0.174
27.47
2.68
2.40
HE
15.0
17.9
20.6
2.80
0.649
17.83
-0.59
-0.87
HK
19.3
18.4
17.8
0.75
0.174
18.50
-0.36
-0.65
HL
22.0
20.9
18.5
1.79
0.405
20.47
0.31
0.02
HP
18.7
19.0
20.0
0.68
0.151
19.23
-0.11
-0.40
HU
I
20.7
18.0
19.9
1.39
0.313
19.53
-0.01
-0.29
IA
•
ID
22.1
21.2
22.3
0.59
0.127
21.87
0.78
0.50
J
20.2
20.2
17.2
1.73
0.347
19.20
-0.12
-0.41
JE
8.9
8.4
8.4
0.29
0.058
8.57
-3.74
-4.02
JG
13.8
17.2
13.4
2.09
0.440
14.80
-1.62
-1.90
JN
•
JS
24.0
22.0
21.0
1.53
0.347
22.33
0.94
0.66
JX
18.0
15.8
17.0
1.10
0.255
16.93
-0.89
-1.18
JY
25.7
20.9
19.1
3.41
0.764
21.90
0.79
0.51
K
12.4
18.4
18.6
3.52
0.718
16.47
-1.05
-1.34
KF
•
KH
18.9
21.9
18.1
2.00
0.440
19.63
0.02
-0.26
KL
26.2
24.3
21.5
2.36
0.544
24.00
1.51
1.22
KZ
19.3
19.3
19.3
0.01
0.000
19.30
-0.09
-0.37
L
15.9
15.6
15.8
0.15
0.035
15.77
-1.29
-1.57
LA
•
LB!
- oW
LM
•
LS
•
LT
23.5
19.2
22.9
2.33
0.498
21.87
0.78
0.50
LZ
• '
MN
MS
22.8
19.2
21.0
1.80
0.417
21.00
0.49
0.20
N
18.6
21.3
19.7
1.36
0.313
19.87
0.10
-0.18
NG
25.8
26.0
26.8
0.53
0.116
26.20
2.25
1.97
NH
2W
0
NO
15.3
16.0
17.1
0.91
0.208
16.13
-1.17
-1.45
NT
22.7
22.8
22.9
0.10
0.023
22.80
1.10
0.82
OB
OF
18.3
20.1
19.2
0.90
0.208
19.20
-0.12
-0.41
OK
•
OS
•
OX
20.3
20.2
19.6
0.38
0.081
20.03
0.16
-0.12
OY
24.7
26.3
22.5
1.91
0.440
24.50
1.68
1.39
OZ
i
P
17.0
26.8
17.8
5.44
1.257
20.53
0.33
U.U5
PB
19.3
19.7
18.3
0.72
0.162
19.10
-0.16
-0.44
• =
No data submitted
TAG SYMBOLS
ft 3 Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
U = Below control limit
0
-------
13/15 EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
f—
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
PC
19.2
20.2
21.4
1.10
0.255
20.27
0.24
-0.05
PG
•
PP
•
PT
15.6
22.2
16.1
3.67
0.764
17.97
-0.54
-0.83
PV
14.9
13.5
14.2
0.70
0.162
14.20
-1.82
-2.11
PW
9.2
8.2
11.8
1.86
0.417
9.73
-3.34
-3.62
PX
•
FY
•
Q
24.8
19.5
21.1
2.72
0.614
21.80
0.76
0.48
QB
•
QJ
•
QU
7.8
8.2
8.1
0.21
0.046
8.03
-3.92
-4.20
11
QX
•
QY
21.2
22.4
21.8
0.60
0.139
21.80
0.76
0.48
QZ
D
15.8
17.4
10.6
3.56
0.788
14.60
-1.69
-1.97
X%
RA
•
•
RC
24.1
22.7
22.8
0.78
0.162
23.20
1.23
0.95
RD
24.2
20.3
18.3
3.00
0.683
20.93
0.46
0.18
RF
19.7
22.6
21.4
1.46
0.336
21.23
0.57
0.28
RL
9
RM
13.9
11.7
11.6
1.30
0.266
12.40
-2.43
-2.72
RN
18.7
19.5
20.1
0.70
0.162
19.43
-0.05
-0.33
RV
7.1
7.8
8.2
0.56
0.127
7.70
-4.03
-4.31
u
RW
18.3
19.0
19.4
0.56
0.127
18.90
-0.23
-0.51
RX
0
RZ
19.8
18.6
18.7
0.67
0.139
19.03
-0.18
-0.46
S
17.7
17.8
17.8
0.06
0.012
17.77
-0.61
-0.89
8A
•
SC
20.3
21.4
20.7
0.56
0.127
20.80
0.42
0.14
SO
24.6
21.3
20.0
2.37
0.533
21.97
0.82
0.53
SF
29.8
31.1
31.3
0.81
0.174
30.73
3.79
3.51
it
SI
30.1
29.3
28.2
0.95
0.220
29.20
3.27
2.99
SM
22.0
28.0
27.8
3.41
0.695
25.93
2.16
1.88
ss
14.9
21.4
20.5
3.52
0.753
18.93
-0.21
-0.50
ST
21.9
22.4
21.4
0.50
0.116
21.90
0.79
0.51
SW
30.6
26.3
18.8
5.97
1.698
25.23
1.92
1.64
sx
•
sz
23.3
20.3
24.3
2.08
0.463
22.63
1.04
0.76
T
20.2
20.0
20.4
0.20
0.046
20.20
0.22
-0.07
TA
23.4
23.1
20.3
1.71
0.359
22.27
0.92
0.63
TD
6.3
4.7
4.6
0.95
0.197
5.20
-4.88
-5.16
TG
17.9
21.5
21.0
1.95
0.417
20.13
0.19
-0.09
TH
25.5
27.4
28.1
1.35
0.301
27.00
2.52
2.24
TI
23.2
20.9
26.4
2.76
0.637
23.50
1.34
1.05
• =
[0.
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
U = Below control limit
y
-------
?;
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993 14 / 15
Radium-228
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
TK
• '
TL
23.4
26.8
15.5
5.80
1.588
21.90
0.79 0.51
TN
16.2
16.9
22.8
3.63
0.764
18.63
-0.32 -0.60
TP
•
TQ
17.3
20.2
18.8
1.45
0.336
18.77
-0.27 -0.55
TU-
•
TS
•
TU
•
tv:
• '
TW
•
U
16.0
18.5
12.6
2.96
0.683
15.70
-1.31 -1.60
UB
•
UC
•
UE
16.4
19.7
19.0
1.74
0.382
18.37
-0.41 -0.69
UI
14.8
17.1
16.2
1.16
0.266
16.03
-1.20 -1.48
UL
•
UN
23.1
24.0
32.3
5.07
1.125
26.47
2.34 2.06
UP
31.0
36.0
38.0
3.61
0.811
35.00
5.24 4.96
It
UQ
25.0
30.0
27.0
2.52
0.579
27.33
2.64 2.35
us:-
' •
uw
21.1
19.6
21.0
0.84
0.174
20.57
0.34 0.06
VA
•
w
15.1
15.3
15.9
0.42
0.093
15.43
-1.40 -1.69
X
Y
13.0
9.9
16.5
3.30
0.764
13.13
-2.18 -2.47
•
Data sorted by Laboratory Averaj
re
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.13
U
GN
15.77
L
18.77
TQ
5.20
U
TD
16.03
UI
18.90
RW
6.93
u
EB
16.13
NO
18.93
SS
7.70
li
RV
16.27
DB
19.03
RZ
8.03
a
QU
16.47
K
19.10
PB
8.57
n
JE
16.93
JX
19.20
OF
9.73
u
PW
17.77
S
19.20
J
10.80
BA
17.83
HE
19.23
HP
11.57
FP
17.97
PT
19.30
KZ
12.00
FZ
18.13
CS
19.33
AI
12.40
RM
18.20
AZ
19.40
DT
13.13
X
18.27
AP
19.43
RN
14.20
PV
18.37
UE
19.53
I
14.60
QZ
18.50
HK
19.57
AJ
14.80
JG
18.60
EP
19.63
KH
15.43
W
18.63
TN
19.63
AW
15.70
U
18.70
BC
19.87
N
• s No data submitted
TAG SYMBOLS
It s Above control limit
0 = Insufficient data
vs .—
x =
= Determined to be an outlier
U = Below control limit
-------
15/15
EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
Radium-228
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
19.97
BM
20.97
BO
22.63
SZ
20.03
OX
21.00
MS
22.80
NT
20.13
TG
21.13
BH
23.20
RC
20.20
T
21.23
RF
23.50
TT
20.27
PC
21.33
AE
24.00
KL
20.33
AF
21.37
CE
24.50
OY
20.47
HL
21.80
QY
24.50
C
20.47
EO
21.80
Q
25.03
AL
20.53
P
21.87
LT
25.23
SW
20.57
UW
21.87
ID
25.93
SM
20.60
DZ
21.90
TL
26.20
NG
20.67
CJ
21.90
ST
26.47
UN
20.67
BK
21.90
JY
27.00
TH
20.77
CG
21.93
DE
27.33
UQ
20.80
sc
21.97
SD
27.47
GQ
20.93
RD
22.13
AK
29.20
SI
20.97
FN
22.27
TA
30.70
It
A
20.97
CA
22.33
JS
30.73
It
SF
35.00
ft
UP
% responding labs
Frequency distribution
10-
¦j ~
nhpii
*j ""
responding labs
-2 d +2
Normalized deviation of the mean from the known value
Frequency distribution
+4
+6
io4
0
-m^Li
0 -t-2
1 j—" u
-4 -2 0 -t-2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x = Determined to be an outlier U = Below control limit J
-------
United Stales Environmental Monitoring EPA 600/R-93/243
Environmental Protection Systems Laboratory September 1993
Agency P-O. Box 93478
Las Vegas NV 89193-3478
Research and Development
*>EPA Radionuclides in Milk
Performance
Evaluation Study
A Statistical Evaluation of
the September 24,1993 Data
9311-0138/nrd243
-------
Radionuclides in Milk
Performance Evaluation Study
September 24, 1993
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 24, 1993.
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: Radionuclides in Milk, 24-Sep-1993 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 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.
-------
2/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
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
resulta). 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. 24-Sep>1993 3/27
v _
Strontium-89 Statistical Summary 111 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
Statistic Respondents Non-outliers
Mean
27.41
Grand Avg 24.03
Std. Dev.
18.80
7.52
Variance
353.62
56.57
% Coef. of Var.
68.59
31.31
% deviation of mean from known value
-8.62
-19.91
Norm. dev. of mean from known value
-0.14
-0.79
Median
24.33
24.33
% deviation of median from known value
-18.89
-18.89
Norm. dev. of median from known value
-0.30
-0.75
-------
^ —
4/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
^
f
Strontium-89
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
31.0
29.0
28.0
1.53
0.354
29.33
1.84
-0.23
AA
9.
AE
31.0
28.0
30.0
1.53
0.354
29.67
1.95
-0.12
AF
9
AH
•
AI
*
AJ
•
AK
27.0
30.0
31.0
2.08
0.473
29.33
1.84
-0.23
AL
•
AN
•
AP
•
AU
26.0
1.0
22.0
13.43
4.721
16.33
-2.66
-4.73
11
AY
•
AZ
9-
BA
29.0
29.0
30.0
0.58
0.118
29.33
1.84
-0.23
BC
6.0
6.0
6.0
0.00
0.000
6.00
-6.24
-8.31
BCt
- •
BH
32.0
32.0
35.0
1.73
0.354
33.00
3.11
1.04
BL
22.0
20.0
19.0
1.53
0.354
20.33
-i-28
-3.35
BM
• ¦
BO
680
60.0
44.0
11.14
4.046-
56,00
11.08
9.01
X
BW
•
C
30.0
29.0
28.0
1.00
0.236
29.00
1.72
-0.35
CA
18.0
19.0
21.0
1.53
0.354
19.33
-1.63
-3.70
CJ
39.0
32.0
36.0
3.51
0.827
35.67
4.03
1.96
CO
9
CP
9
CQ
9
D
24.0
24.0
25.0
0.58
0.118
24.33
0.11
-1.96
DD
9
DE
15.0
15.0
15.0
0.00
0.000
15.00
-3.13
-5.20
DL
91
DM
DT
25.0
25.0
25.0
0.00
0.000
25.00
0.34
-1.73
DY
9
E
20.0
20.0
27.0
4.04
0.827
22.33
-0.59
-2.66
EA
9
EB
2fi.O
32.0
30.0
3.06
0.709
29.33
1.84
-0.23
EH
9
EL
26.0
29.0
29.0
1.73
0.354
28.00
1.38
-0.69
EX
9
FE
35.0
34.0
31.0
2.08
0.473
33.33
3.22
1.15
,FL
9
GE
HU
12.0
11.0
13.0
1.00
0.236
12.00
-4.17
-6.24
4
• H
No data submitted
TAG SYMBOLS
IT 2 Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
li ~ Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 5 / 27
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
HX
I
IC
•
IU
J
18.0
20.0
21.0
1.53
0.354
19.67
-1.51
-3.58 U
JR
•
JS
K
•
KL
KX
26.0
28.0
28.0
1.15
0.236
27.33
1.15
-0.92
L
LA
T.ig
•
LF"<'
LM
lb:;
m
MA
•
ML;
•
•
MQ
19.0
24.0
22.0
2.52
0.591
21.67
-0.82
-2.89
MS
MV
•
N
320
32.0
30.0
1.15
0.236
31.33
2.53
0.46
NH
NJ
8.0
6.0
9.0
1.53
0.354
7.67
-5.67
-7.74 U
O
PB
20.0
18.0
18.0
1.15
0.236
18.67
-1.86
-3.93 U
PC
34.0
31.0
28.0
3.00
0.709
31.00
2.42
0.35
PI
•
PM
22.0
28.0
23.0
3.21
0.709
24.33
0.11
-1.96
PP
•<
PT
15.0
24.0
22.0
4.73
1.120
20.33
-1.28
-3.35 U
PV
*
PW
•
FT
Q
20.0
23.0
26.°
3.00
0.709
23.00
-0.36
-2.42
QB
QJ
QK
•
QL
43.0
35.0
51.0
8.00
2.695
43.00
6.57
4.50 ft
QX
•
QZ
•
-4.62 U
R
15.0
18.0
17.0
1.53
0.354
16.67
-2.55
RA
•
• =
0 a
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
11 = Below control limit
-------
C(
6/27
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
Strontium-89
>1
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
RC
•
RK
131,0
125.0-
137.0
6.00
1.795
131.00 37.06
34;99
X,
S
16.0
17.0
18.0
1.00
0.236
17.00 -2.43
-4.50
u
SM
O
SS
26.0
25.0
22.0
2.08
0.473
24.33 0.11
-1.96
T
23.0
22.0
24.0
1.00
0.236
23.00 -0.36
-2.42
TA
•
TD
10,4
0
TE
•
TI
•
TP
•
TQ
26.0
29.0
26.0
1.73
0.354
27.00 1.03
-1.04
TS
•
TV
•
>TW
•
U
23.0
26.0
26.0
1.73
0.354
25.00 0.34
-1.73
UB
\'m- ¦
VG
17.0
20.0
19.0
1.53
0.354
18.67 -1.86
-3.93
n
W
21.0
16.0
23.0
3.61
0.827
20.00 -1.39
-3.46
ii
WA
¦ •
Y
31.0
32.0
29.0
1.53
0.354
30.67 2.30
0.23
Data sorted by Laboratory Averaf
:e
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.00
U
BC
20.33
JJ
BL
29.33
EB
7.67
U
NJ
21.67
MQ
29.33
BA
12.00
Ji
HU
22.33
E
29.33
AK
15.00
U
DE
23.00
T
29.33
A
16.33
AU
23.00
Q
29.67
AE
16.67
U
R
24.33
SS
30.67
Y
17.00
U
S
24.33
PM
31.00
PC
18.67
U
VG
24.33
D
31.33
N
18.67
U
PB
25.00
U
33.00
BH
19.33
U
CA
25.00
DT
33.33
FE
19.67
U
J
27.00
TQ
35.67
CJ
20.00
U
W
27.33
KX
43.00
IT
QL
20.33
U
PT
28.00
EL
56.00
X
BO
29.00
C
131.00
X
RK
• = No data submitted
TAG SYMBOLS
IT = Above control limit
0 = Insufficient data
X 5
= Determined to be an outlier
11 = Below control limit
v
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 7/27
Strontium-89
% responding labs Frequency distribution
10- - -
¦. T ll . fl f "B f
I ¦ I I ~~~ T™ T ~ T I 1—
-6 -4 -2 0 +2 +4
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
+6
10-
JLiljl
¦, ¦ , ¦, —flLl|
-4 -2 0+2+4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 8/27
Strontium-90 Statistical Summary 111 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
61 (55.0 %) Failed to respond ;
1(0.9 %) Outliers
11 (9.9 %) Out of control
but not an outlier
Statistic
/ 32(28.8 %) Within all limits
Respondents
6(5.4 %) In warning zone
but within control
Non-outliers
Mean
21.40
Grand Avg 19.97
Std. Dev.
11.34
5.23
Variance
128.65
27.36
% Coef. of Var.
53.00
26.19
% deviation of mean from known value
-14.40
-20.11
Norm. dev. of mean from known value
-0.32
-0.96
Median
22.00
22.00
% deviation of median from known value
-12.00
-12.00
Norm. dev. of median from known value
-0.26
-0.57
12(24.0 °/o) More than 3 norm. S.D.,
6(12.0 %) Between 2 and 3 norm. S.D
, 17(34.0 %) Within 1 norm. S.D.
of known value
5(30.0 %) Between 1 and 2 norm. S.D.
-------
(f :==:===^===============^=====:_—___________
9/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
Strontium-90
N
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng an ail
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tac
A
22.0
21.0
23.0
1.00
0.236
22.00
0.70
-1.04
AA
20.0
18.0
23.0
2.52
0.591
20.33
0.12
-1.62
AE
24.0
25.0
23.0
1.00
0.236
24.00
1.40
-0.35
AF
25.0
27.0
26.0
1.00
0.236
26.00
2.09
0.35
AH
•
AI
*
AJ
•
AK
23.0
21.0
20.0
1.53
0.354
21.33
0.47
-1.27
AL
22.0
22.0
22.0
0.00
0.000
22.00
0.70
-1.04
AN
•
AP
•
AU
20.0
19.0
17.0
1.53
0.354
18.67
-0.45
-2.19
AY
21.0
21.0
19.0
1.15
0.236
20.33
0.12
-1.62
AZ
9
BA
19.0
18.0
17.0
1.00
0.236
18.00
-0.68
-2.42
BC
7.0
6.0
6.0
0.58
0.118
6.33
-4.72
-6.47
BG
20.0
24.0
22.0
2.00
0.473
22.00
0.70
-1.04
BH
21.0
20.0
23.0
1.53
0.354
21.33
0.47
-1.27
BL
21.0
23.0
21.0
1.15
0.236
21.67
0.59
-1.15
BM
•
BO
12.0
13.0
12.0
0.58
0.118
12.33
-2.65
-4.39
BW
•
C
22.0
22.0
22.0
0.00
0.000
22.00
0.70
-1.04
CA
22.0
22.0
22.0
0.00
0.000
22.00
0.70
-1.04
CJ
23.0
23.0
26.0
1.73
0.354
24.00
1.40
-0.35
CO
11.0
12.0
10.0
1.00
0.236
11.00
-3.11
-4.85
CP
•
CQ
•
D
24.0
23.0
23.0
0.58
0.118
23.33
1.16
-0.58
DD
•
DE
15.0
15.0
15.0
0.00
0.000
15.00
-1.72
-3.46
DL
•
DM
DT
22.0
23.0
22.0
0.58
0.118
22.33
0.82
-0.92
DY
•
E
25.0
26.0
26.0
0.58
0.118
25.67
1.97
0.23
EA
•
EB
17.0
19.0
20.0
1.53
0.354
18.67
-0.45
-2.19
EH
•
EL
23.0
24.0
21.0
1.53
0.354
22.67
0.93
-0.81
EX
•
FE
24.0
24.0
22.0
1.15
0.236
23.33
1.16
-0.58
FL
•
GE
•
HU
22.0
22.0
22.0
0.00
0.000
22.00
0.70
-1.04
• =
No data submitted
TAG SYMBOLS
It = Above control limit
0 =
i—
Insufficient data
x =
Determined to be an outlier
11 s Below control limit
v
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 10 / 27
(
Stronti um-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
HX
I
•
•
IC
•
IU
•
J
28.0
26.0
26.0
1.15
0.236
26.67
2.32
0.58
JR
•
JB
•
K
•
KL
•
KX
25.0
24.0
24.0
0.58
0.118
24.33
1.51
-0.23
L
23.0
22.0
22.0
0.58
0.118
22.33
0.82
-0.92
LA
LE
•
LF
•
JM
LR
•
M,\
m -
MA
ML
9
MP
•
MQ
29.0
26.0
27.0
1.53
0.354
27.33
2.55
0.81
MS
MV
•
N
19.0
16.0
19.0
1.73
0.354
18.00
-0.68
-2.42
NH
•
NJ
5.0
7.0
7.0
1.15
0.236
6.33
-4.72
-6.47 Ji
O
•
PB
10.0
10.0
10.0
0.00
0.000
10.00
-3.45
-5.20 li
PC
12.0
12.0
11.0
0.58
0.118
11.67
-2.88
-4.62 U
PI
•
PM
22.0
25.0
23.0
1.53
0.354
23.33
1.16
-0.58
PP
23.0
22.0
25.0
1.53
0.354
23.33
1.16
-0.58
PT
23.0
21.0
21.0
1.15
0.236
21.67
0.59
-1.15
PV
24.0
17.0
18.0
3.79
0.827
19.67
-0.11
-1.85
PW
•
PY
•
Q
30.0
31.0
31.0
0.58
0.118
30.67
3.70
1.96
QB
•
QJ
•
QK
•
QL
13.0
14.0
14.0
0.58
0.118
13.67
-2.18
-3.93 U
QX
•
QZ
•
-3.35 li
R
15.0
16.0
15.0
0.58
0.118
15.33
-1.61
RA
•
(f
•
ill '«
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
11 = Above control limit
= Below control limit J
-------
11/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
Stronti um-90
Lab
Res. 1
Exper. Rng anal Normalized deviation
Res- ^ Res. 3 Sigma (R 4- SR) Average (grand-avg) (known)
Tag
RC
RK
S
SM
SS
T
TA
TD
TE
TI
TP
TQ
TS
TV
TW
U
UB
VG
W
WA
Y
91.0
14.0
24.0
18.0
1.0
18.0
22.0
14.0
21.0
98.0
12.0
24.0
19.0
86.0
16.0
25.0
19.0
6.51
2.00
0.58
0.58
2.020
0.473
0.118
0.118
91.33
14.00
24.33
18.67
24.72
-2.07
1.51
-0.45
22.98
-3.81
-0.23
-2.19
22.0
16.0
23.0
14.0
23.0
22.0
19.0
22.0
16.0
23.0
22.0
1.53
0.58
1.15
1.15
0.00
0.354
0.118
0.236
0.236
0.000
17.67
22.33
14.67
22.33
22.00
-0.80
0.82
-1.84
0.82
0.70
-2.54
-0.92
-3.58
-0.92
-1.04
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.33
u
NJ
18.67
AU
22.33
L
6.33
u
BC
19.67
PV
22.33
DT
10.00
Ji
PB
20.33
AY
22.67
EL
11.00
u
CO
20.33
AA
23.33
PP
11.67
u
PC
21.33
BH
23.33
PM
12.33
u
BO
21.33
AK
23.33
FE
13.67
u
QL
21.67
PT
23.33
D
14.00
u
S
21.67
BL
24.00
CJ
14.67
a
VG
22.00
Y
24.00
AE
15.00
u
DE
22.00
HU
24.33
SS
15.33
u
R
22.00
CA
24.33
KX
17.67
TQ
22.00
C
25.67
E
18.00
N
22.00
BG
26.00
AF
18.00
BA
22.00
AL
26.67
J
18.67
T
22.00
A
27.33
MQ
18.67
EB
22.33
W
30.67
Q
22.33
U
91.33
X
RK
x
a
0
• '
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
H = Below control limit
-------
^
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 12 / 27
Strontium-90
%
20
10
0
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
.I
i » .. ..i. -il. lii
¦III 1 ¦¦ ¦
•6 -4 -2 0 +2+4+6
Normalized deviation of the mean from the grand average
responding labs Frequency distribution
1 ¦ ¦¦¦ ¦¦¦! alt ¦! 1
¦lit ¦¦¦¦ ¦ ss
i i r 1 1 t 1 1 1 i I I
-6 -4 -2 0+2+4 +6
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 13/27 J
\
Iodine-131 Statistical Summary 111 Participants
The known value of this nuclide is 120.0 pCi/1 with an expected precision of 12.0; the control limits
are 99.2 to 140.8; the warning regions are 99.2 to 106.1 and 133.9 to 140.8
Statistic Respondents Non-outliers
Mean
120.07
Grand Avg 120.12
Std. Dev.
17.87
8.37
Variance
319.42
70.09
% Coef. of Var.
14.89
6.97
% deviation of mean from known value
0.06
0.10
Norm. dev. of mean from known value
0.00
0.01
Median
120.50
120.00
% deviation of median from known value
0.42
0.00
Norm. dev. of median from known value
0.03
0.00
-------
(c
14/27
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
Iodine-131
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
130.0
128.0
126.0
2.00
0.197
128.00
1.14
1.15
AA
116.0
119.0
115.0
2.08
0.197
116.67
-0.50
-0.48
AE
111.0
116.0
112.0
2.65
0.246
113.00
-1.03
-1.01
AF
117.0
128.0
122.0
5.51
0.541
122.33
0.32
0.34
AH
112.0
105.0
107.0
3.61
0.345
108.00
-1.75
-1.73
AI
•
AJ
130.0
130.0
130.0
0.00
0.000
130.00
1.43
1.44
AK
122.0
123.0
123.0
0.58
0.049
122.67
0.37
0.38
AL
117.0
116.0
117.0
0.58
0.049
116.67
-0.50
-0.48
AN
114.0
114.0
115.0
0.58
0.049
114.33
-0.83
-0.82
AP
118.0
118.0
112.0
3.46
0.295
116.00
-0.59
-0.58
AU
116.0
119.0
115.0
2.08
0.197
116.67
-0.50
-0.48
AY
123.0
133.0
154.0
15.82
2.002
136.67
2.39
241
AZ
•
BA
121.0
123.0
128.0
3.61
0.345
124.00
0.56
0.58
BC
125.0
119.0
124.0
3.21
0.295
122.67
0.37
0.38
BG
•
BH
101.0
96.0
102.0
3.21
0.295
99.67
-2.95
-2.93
BL
119.0
115.0
117.0
2.00
0.197
117.00
-0.45
-0.43
BM
128.0
120.0
128.0
4.62
0.394
125.33
0.75
0.77
BO
117.0
122.0
118.0
2.65
0.246
119.00
-0.16
-0.14
BW
•
C
124.0
122.0
120.0
2.00
0.197
122.00
0.27
0.29
CA
121.0
130.0
125.0
4.51
0.443
125.33
0.75
0.77
CJ
130.0
130.0
120.0
5.77
0.492
126.67
0.95
0.96
CO
119.0
114.0
114.0
2.89
0.246
115.67
-0.64
-0.63
CP
122.0
123.0
122.0
0.58
0.049
122.33
0.32
0.34
CQ
124.0
138.0
132.0
7.02
0.689
131.33
1.62
1.64
D
118.0
121.0
113.0
4.04
0.394
117.33
-0.40
-0.38
DD
126.0
129.0
126.0
1.73
0.148
127.00
0.99
1.01
DE
118.0
118.0
119.0
0.58
0.049
118.33
-0.26
-0.24
DL
•
DM
118.0
118.0
118.0
0.00
0.000
118.00
-0.31
-0.29
DT
122.0
124.0
131.0
4.73
0.443
125.67
0.80
0.82
DY
125.0
124.0
127.0
1.53
0.148
125.33
0.75
0.77
E
113.0
122.0
120.0
4.73
0.443
118.33
-0.26
-0.24
EA
119.0
118.0
117.0
1.00
0.098
118.00
-0.31
-0.29
EB
112.0
116.0
120.0
4.00
0.394
116.00
-0.59
-0.58
EH
116.0
116.0
108.0
4.62
0.394
113.33
-0.98
-0.96
EL
119.0
118.0
122.0
2.08
0.197
119.67
-0.06
-0.05
EX
145.0
134.0
123.0
11.00
1.158
134.00
2.00
2.02
FE
66.0
62.0
54,0
6.11
0.591
60.67
-8.58
-8.56
X
FL
12.0
12.0
12.0
0.00
0.000
12.00
-15.61
-15.59
X
GE
•
HU
101.0
103.0
105.0
2.00
0.197
103.00
-2.47
-2.45
• = No data submitted
TAG SYMBOLS
IT s Above control limit
0 = Insufficient data
x =
Determined to be an outlier
Jl == Below control limit
JJ
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 15/27 \
Iodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
HX
•
I
125.0
129.0
118.0
5.57
0.541
124.00
0.56
0.58
IC
118.0
115.0
115.0
1.73
0.148
116.00
-0.59
-0.58
IU
120.0
119.0
114.0
3.21
0.295
117.67
-0.35
-0.34
J
121.0
117.0
119.0
2.00
0.197
119.00
-0.16
-0.14
JR
122.0
120.0
119.0
1.53
0.148
120.33
0.03
0.05
JS
112.0
108.0
101.0
5.57
0.541
107.00
-1.89
-1.88
K
114.0
113.0
114.0
0.58
0.049
113.67
-0.93
-0.91
KL
124.0
120.0
136.0
8.33
0.788
126.67
0.95
0.96
KX
118.0
115.0
118.0
1.73
0.148
117.00
-0.45
-0.43
L
111.0
109.0
108.0
1.53
0.148
109.33
-1.56
-1.54
LA
•
le
238.0
169.0
144.0
48.69
7.908
183,67
9.17
9; 19 X
LF
120.0
110.0
120.0
5.77
0.492
116.67
0.50
-0.48
LM
•-
LR
101.0
106.0
101.0
2.89
0.246
102.67
-2.52
-2.50
M
110.0
113.0
106.0
3.51
0.345
109.67
-1.51
-1.49
MA
117.0
119.0
114.0
2.52
0.246
116.67
-0.50
-0.48
ML
109.0
114.0
119.0
5.00
0.492
114.00
-0.88
-0.87
MP
118.0
119.0
125.0
3.79
0.345
120.67
0.08
0.10
MQ
128.0
124.0
112.0
8.33
0.788
121.33
0.18
019
MS
•
MV
128.0
126.0
129.0
1.53
0.148
127.67
1.09
1.11
N
123.0
123.0
126.0
1.73
0.148
124.00
0.56
0.58
NH
129.0
128.0
218.0
51.68
7.533
158.33
5,52
5.63 x
NJ
120.0
120.0
130.0
5.77
0.492
123.33
0.46
0.48
O
117.0
118.0
117.0
0.58
0.049
117.33
-0.40
-0.38
PB
124.0
125.0
125.0
0.58
0.049
124.67
0.66
0.67
PC
- •
PI
126.0
123.0
121.0
2.52
0.246
123.33
0.46
0.48
PM
130.0
130.0
130.0
0.00
0.000
130.00
1.43
1.44
PP
113.0
136.0
140.0
14.57
1.627
129.67
1.38
1.40
PT
131.0
113.0
119.0
9.17
0.886
121.00
0.13
0.14
PV
128.0
127.0
131.0
2.08
0.197
128.67
1.23
1.25
PW
154.0
162.0
149.<>
2.52
0.246
151.67
4.56
457 x
PY
•
Q
108.0
108.0
113.0
2.89
0.246
109.67
-1.51
-1.49
QB
160.0
140.0
150.0
10.00
0.984
150.00
4.31
4;33 x
QJ
122.0
120.0
120.0
1.15
0.098
120.67
0.08
0.10
QK
134.0
134.0
133.0
0.58
0.049
133.67
1.96
1.97
QL
101.0
121.0
96.0
13.23
1.439
106.00
-2.04
-2.02
QX
144.0
136.0
131.0
6.56
0.640
137.00
2.44
2.45
QZ
•
R
118.0
115.0
118.0
1.73
0.148
117.00
-0.45
-0.43
RA
•
• = No data submitted TAG SYMBOLS ft s Above control limit
I 0 = Insufficient data x = Determined to be an outlier II s Below control limit
^ ¦ JJ
-------
(?
16/27
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
Iodine-131
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average' (grand-avg) (known) Tag
RC
•
RK
97.0
99.0
96.0 1.53
0.148
97.33 -3.29
-3.27
u
S
117.0
123.0
123.0 3.46
0.295
121.00 0.13
0.14
SM
114.0
117.0
117.0 1.73
0.148
116.00 -0.59
-0.58
SS
127.0
148.0
126.0 12.42
1.158
133.67 1.96
1.97
T
121.0
122.0
129.0 4.36
0.394
124.00 0.56
0.58
TA
129.0
128.0
134.0 3.21
0.295
130.33 1.47
1.49
TD
141.0
142.0
136.0 3.21
0.295
139.67 2.82
2.84
TE
*•
TI
109.0
107.0
120.0 7.00
0.640
112.00 -1.17
-1.15
TP
•
TQ
121.0
122.0
115.0 3.79
0.345
119.33 -0.11
-0.10
TS
¦ •
TV
•
TW
9
U
116.0
119.0
112.0 3.51
0.345
115.67 -0.64
-0.63
UB
•
VG
134.0
137.0
135.0 1.53
0.148
135.33 2.20
2.21
W
105.0
114.0
112.0 4.73
0.443
110.33 -1.41
-1.40
WA
122.0
134.0
108.0 13.01
1.533
121.33 0.18
0.19
Y
118.0
126.0
121.0 4.04
0.394
121.67 0.22
0.24
Data sorted by Laboratory Averaj
re
Average
Taj?
Lab
Average
Tag
Lab
Average
Tag
Lab
12.00
X
FL
116.00
SM
119.33
TQ
60.67
X
FE
116.00
IC
119.67
EL
97.33
Ji
RK
116.00
EB
120.33
JR
99.67
BH
116.00
AP
120.67
QJ
102.67
LR
116.67
MA
120.67
MP
103.00
HU
116.67
LF
121.00
S
106.00
QL
116.67
AU
121.00
PT
107.00
JS
116.67
AL
121.33
WA
108.00
AH
116.67
AA
121.33
MQ
109.33
L
117.00
R
121.67
Y
109.67
Q
117.00
KX
122.00
C
109.67
M
117.00
BL
122.33
CP
110.33
W
117.33
O
122.33
AF
112.00
TI
117.33
D
122.67
BC
113.00
AE
117.67
IU
122.67
AK
113.33
EH
118.00
EA
123.33
PI
113.67
K
118.00
DM
123.33
NJ
114.00
ML
118.33
E
124.00
T
114.33
AN
118.33
DE
124.00
N
115.67
U
119.00
J
124.00
I
115.67
CO
119.00
BO
124.00
BA
• s No data submitted
TAG SYMBOLS
1T s Above control limit
0 s Insufficient data
x = Determined to be an outlier
•U = Below control limit
\>
'/
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 17 / 27
Iodine-131
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
124.67
PB
128.00
A
134.00
EX
125.33
DY
128.67
FV
135.33
VG
125.33
CA
129.67
PP
136.67
AY
125.33
BM
130.00
PM
137.00
QX
125.67
DT
130.00
AJ
139.67
TD
126.67
KL
130.33
TA
150.00
X
QB
126.67
CJ
131.33
CQ
151.67
X
PW
127.00
DD
133.67
ss
158.33
X
NH
127.67
MV
133.67
QK
183.67
X
LE
% responding labs
Frequency distribution
10-
¦ f¦|
"T—
-6
% responding labs
-2 0+2+4
Normalized deviation of the mean from the known value
Frequency distribution
—r"
+6
¦f ¦¦
10- - -
oK-
-6
Ullfl
4*1-
f-OU
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted TAG SYMBOLS ft s Above control limit
| 0 = Tn sufficient data x = Determined to be an outlier li = Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 18 / 27
\
Cesium-137 Statistical Summary 111 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
Statistic Respondents Non-outliers
Mean
50.02
Grand Avg 50.02
Std. Dev.
3.00
3.00
Variance
9.00
9.00
% Coef. of Var.
6.00
6.00
% deviation of mean from known value
2.08
2.08
Norm. dev. of mean from known value
0.34
0.34
Median
49.67
49.67
% deviation of median from known value
1.36
1.36
Norm. dev. of median from known value
0.22
0.22
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
c
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
J
Normalized deviation
(grand-avg) (known) Trjz
A
52.0
49.0
52.0
1.73
0.354
51.00
0.34
0.69
AA
49.0
49.0
49.0
0.00
0.000
49.00
-0.35
0.00
AE
49.0
49.0
49.0
0.00
0.000
49.00
-0.35
0.00
AF
51.0
48.0
45.0
3.00
0.709
48.00
-0.70
-0.35
AH
48.0
46.0
44.0
2.00
0.473
46.00
-1.39
-1.04
AI
47.0
47.0
46.0
0.58
0.118
46.67
-1.16
-0.81
AJ
57.0
59.0
60.0
1.53
0.354
58.67
3.00
3.35 1T
AK
50.0
50.0
50.0
0.00
0.000
50.00
-0.01
0.35
AL
50.0
52.0
52.0
1.15
0.236
51.33
0.46
0.81
AN
47.0
47.0
49.0
1.15
0.236
47.67
-0.81
-0.46
AP
47.0
50.0
52.0
2.52
0.591
49.67
-0.12
0.23
AU
48.0
50.0
49.0
1.00
0.236
49.00
-0.35
0.00
AY
49.0
53.0
48.0
2.65
0.591
50.00
-0.01
0.35
AZ
•
BA
51.0
52.0
53.0
1.00
0.236
52.00
0.69
1.04
BC
50.0
55.0
52.0
2.52
0.591
52.33
0.80
1.15
BG
•
BH
55.0
52.0
52.0
1.73
0.354
53.00
1.03
1.39
BL
49.0
49.0
44.0
2.89
0.591
47.33
-0.93
-0.58
BM
50.0
52.0
50.0
1.15
0.236
50.67
0.22
0.58
BO
49.0
48.0
53.0
2.65
0.591
50.00
-0.01
0.35
BW
52.0
50.0
47.0
2.52
0.591
49.67
-0.12
0.23
C
51.0
50.0
49.0
1.00
0.236
50.00
-0.01
0.35
CA
52.0
49.0
46.0
3.00
0.709
49.00
-0.35
0.00
CJ
50.0
50.0
52.0
1.15
0.236
50.67
0.22
0.58
CO
53.0
61.0
50.0
5.69
1.570
54.67
1.61
1.96
CP
47.0
48.0
48.0
0.58
0.118
47.67
-0.81
-0.46
CQ
51.0
54.0
50.0
2.08
0.473
51.67
0.57
0.92
D
47.0
50.0
52.0
2.52
0.591
49.67
-0.12
0.23
DD
54.0
51.0
55.0
2.08
0.473
53.33
1.15
1.50
DE
53.0
53.0
53.0
0.00
0.000
53.00
1.03
1.39
DL
•
DM
47.0
48.0
49.0
1.00
0.236
48.00
-0.70
-0.35
DT
48.0
53.0
45.0
4.04
0.945
48.67
-0.47
-0.12
DY
53.0
54.0
52.0
1.00
0.236
53.00
1.03
1.39
E
50.0
53.0
45.0
4.04
0.945
49.33
-0.24
0.12
EA
50.0
49.0
50.0
0.58
0.118
49.67
-0.12
0.23
EB
50.0
51.0
50.0
0.58
0.118
50.33
0.11
0.46
EH
46.0
48.0
48.0
1.15
0.236
47.33
-0.93
-0.58
EL
49.0
49.0
48.0
0.58
0.118
48.67
-0.47
-0.12
EX
52.0
43.0
57.0
7.09
2.245
50.67
0.22
0.58
FE
49.0
48.0
48.0
0.58
0.118
48.33
-0.58
-0.23
FL
51.0
50.0
51.0
0.58
0.118
50.67
0.22
0.58
GE
• ¦
HU
40.0
41.0
43.0
1.53
0.354
41.33
-3.01
-2.66
• =
I 0 a
^
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
11 s Below control limit
JJ
-------
m
EMSLrLV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 20 / 27
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
HX
•
I
47.0
53.0
49.0
3.06
0.709
49.67
-0.12
0.23
IC
46.0
49.0
51.0
2.52
0.591
48.67
-0.47
-0.12
IU
52.0
52.0
50.0
1.15
0.236
51.33
0.46
0.81
J
48.0
50.0
48.0
1.15
0.236
48.67
-0.47
-0.12
JR
50.0
52.0
51.0
1.00
0.236
51.00
0.34
0.69
JS
63.0
48.0
54.0
7.55
2.470
55.00
1.73
2.08
K
51.0
51.0
52.0
0.58
0.118
51.33
0.46
0.81
KL
51.0
50.0
56.0
3.21
0.709
52.33
0.80
1,15
KX
48.0
47.0
50.0
1.53
0.354
48.33
-0.58
-0.23
L
49.0
46.0
47.0
1.53
0.354
47.33
-0.93
-0.58
LA
•
LE
35.0
46.0
52.0
8.62
2.921
44.33
-1.97
-1.62
LF
49.0
50.0
49.0
0.58
0.118
49.33
-0.24
0.12
IM
LR
50.0
48.0
52.0
2.00
0.473
50.00
-0.01
0.35
M
48.0
48.0
49.0
0.58
0.118
48.33
-0.58
-0.23
MA
49.0
48.0
52.0
2.08
0.473
49.67
-0.12
0.23
ML
49.0
51.0
43.0
4.16
0.945
47.67
-0.81
-0.46
MP
48.0
49.0
53.0
2.65
0.591
50.00
-0.01
0.35
MQ
49.0
47.0
56.0
4.73
1.120
50.67
0.22
0.58
MS
• >
MV
51.0
48.0
52.0
2.08
0.473
50.33
0.11
0.46
N
51.0
52.0
51.0
0.58
0.118
51.33
0.46
0.81
NH
53.0
53.0
50.0
1.73
0.354
52.00
0.69
1.04
NJ
52.0
55.0
51.0
2.08
0.473
52.67
0.92
1.27
0
50.0
50.0
49.0
0.58
0.118
49.67
-0.12
0.23
PB
54.0
51.0
52.0
1.53
0.354
52.33
0.80
1.15
PC
42.0
44.0
47.0
2.52
0.591
44.33
-1.97
-1.62
PI
48.0
50.0
52.0
2.00
0.473
50.00
-0.01
0.35
PM
56.0
55.0
52.0
2.08
0.473
54.33
1.49
1.85
PP
55.0
53.0
56.0
1.53
0.354
54.67
1.61
1.96
PT
49.0
50.0
51.0
1.00
0.236
50.00
-0.01
0.35
PV
57.0
51.0
54.0
3.00
0.709
54.00
1.38
1.73
PW
46.0
48.0
45.0
1.53
0.354
46.33
-1.28
-0.92
PY
1
Q
46.0
50.0
51.0
2.65
0.591
49.00
-0.35
0.00
QB
50.0
50.0
50.0
0.00
0.000
50.00
-0.01
0.35
QJ
53.0
48.0
53.0
2.89
0.591
51.33
0.46
0.81
QK
57.0
57.0
60.0
1.73
0.354
58.00
2.77
3.12
IT
QL
48.0
47.0
50.0
1.53
0.354
48.33
-0.58
-0.23
QX
58.0
60.0
60.0
1.15
0.236
59.33
3.23
3.58
tr
QZ
* •
R
49.0
49.0
51.0
1.15
0.236
49.67
-0.12
0.23
RA
•
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
hi
Insufficient data
x =
Determined to be an outlier
II a Below control limit
— 'J
-------
((
21/27
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
Cesium-137
"\
Lab
Res. 1
Res. 2
Exper.
Res. 3 Sigma
Rng anal
(R + SR)
Normalized deviation
Average (grand-avg) (known) Tag
RC
•
RK
47.0
47.0
46.0 0.58
0.118
46.67 -1.16
-0.81
S
50.0
49.0
50.0 0.58
0.118
49.67 -0.12
0.23
SM
50.0
49.0
54.0 2.65
0.591
51.00 0.34
0.69
SS
48.0
54.0
49.0 3.21
0.709
50.33 0.11
0.46
T
49.0
53.0
50.0 2.08
0.473
50.67 0.22
0.58
TA
40.0
43.0
48.0 4.04
0.945
43.67 -2.20
-1.85
TD
61.0
56.0
58.0 2.52
0.591
58.33 2.88
3.23
it
TE
50.0
47.0
50.0 1.73
0.354
49.00 -0.35
0.00
TI
49.0
49.0
49.0 0.00
0.000
49.00 -0.35
0.00
TP
•
TQ
47.0
48.0
48.0 0.58
0.118
47.67 -0.81
-0.46
TS
•
TV
TW
. •
U
50.0
49.0
49.0 0.58
0.118
49.33 -0.24
0.12
UB
•
VG
49.0
46.0
48.0 1.53
0.354
47.67 -0.81
-0.46
W
43.0
46.0
48.0 2.52
0.591
45.67 -1.51
-1.15
WA
46.0
48.0
44.0 2.00
0.473
46.00 -1.39
-1.04
Y
48.0
50.0
49.0 1.00
0.236
49.00 -0.35
0.00
Data sorted by Laboratory Averag
:e
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
41.33
HU
48.33
M
49.67
MA
43.67
TA
48.33
KX
49.67
I
44.33
PC
48.33
FE
49.67
EA
44.33
LE
48.67
J
49.67
D
45.67
W
48.67
IC
49.67
BW
46.00
WA
48.67
EL
49.67
AP
46.00
AH
48.67
DT
50.00
QB
46.33
PW
49.00
Y
50.00
PT
46.67
RK
49.00
TI
50.00
PI
46.67
AI
49.00
TE
50.00
MP
47.33
L
49.00
Q
50.00
LR
47.33
EH
49.00
CA
50.00
C
47.33
BL
49.00
AU
50.00
BO
47.67
VG
49.00
AE
50.00
AY
47.67
TQ
49.00.
AA
50.00
AK
47.67
ML
49.33
U
50.33
SS
47.67
CP
49.33
LF
50.33
MV
47.67
AN
49.33
E
50.33
EB
48.00
DM
49.67
S
50.67
T
48.00
AF
49.67
R
50.67
MQ
48.33
QL
49.67
O
50.67
FL
• 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: Radionuclides in Milk, 24-Sep-1993 22 / 27
Cesium-137
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
50.67
EX
51.33
AL
53.00
BH
50.67
CJ
51.67
CQ
53.33
DD
50.67
BM
52.00
NH
54.00
PV
51.00
SM
52.00
BA
54.33
PM
51.00
JR
52.33
PB
54.67
PP
51.00
A
52.33
KL
54.67
CO
51.33
QJ
52.33
BC
55.00
JS
51.33
N
52.67
NJ
58.00
ft
QK
51.33
K
53.00
DY
58.33
It
TD
51.33
IU
53.00
DE
58.67
ft
AJ
59.33
ft
QX
% responding labs
Frequency distribution
10-
o r
-6
responding labs
-2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-
0J—p
-V .¦fiiHpl
, 1*--
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
U s Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 23 / 27
Total Potassium Statistical Summary 111 Participants
The known value of this nuclide is 1679.0 mg/1 with an expected precision of 84.0; the control limits
are 1533.3 to 1824.7; the warning regions are 1533.3 to 1581.8 and 1776.2 to 1824.7
Statistic Respondents Non-outliers
Mean
1866.54
Grand Avg 1674.07
Std. Dev.
1730.98
95.22
Variance
2996277.75
9067.33
% Coef. of Var.
92.74
5.69
% deviation of mean from known value
11.17
-0.29
Norm. dev. of mean from known value
0.11
-0.05
Median
1689.67
1689.67
% deviation of median from known value
0.64
0.64
Norm. dev. of median from known value
0.01
0.11
-------
24 / 27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
Total Potassium
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average'
(grand-avg)
(known) Tag
A
2001.0
2138.0
2334.0
167.37
3.555
2157.67
9.97
9.87
X
AA
1861.0
1805.0
1868.0
34.53
0.443
1844.67
3.52
3.42
IT
AE
•
AF
1635.0
1584.0
1643.0
32.01
0.415
1620.67
-1.10
-1.20
AH
1571.0
1631.0
1603.0
30.02
0.422
1601.67
-1.49
-1.59
AI
1680.0
1650.0
1670.0
15.28
0.211
1666.67
-0.15
-0.25
AJ
1790.0
1850.0
1870.0
41.63
0.563
1836.67
3.35
3.25
1t
AK
1761.0
1763.0
1790.0
16.20
0.204
1771.33
2.01
1.90
AL
1790.0
1790.0
1800.0
5.77
0.070
1793.33
2.46
2.36
AN
1708.0
1727.0
1724.0
10.21
0.134
1719.67
0.94
0.84
AP
•
AU
1630.0
1600.0
1660.0
30.00
0.422
1630.00
-0.91
-1.01
AY
1457.0
1627.0
1637.0
101.16
1.506
1573.67
-2.07
-2.17
AZ
•
BA
1648.0
1720.0
1780.0
66.09
0.928
1716.00
0.86
0.76
BC
•
BO
•
BH
1580.0
1600.0
1600.0
11.55
0.141
1593.33
-1.66
-1.77
BL
1721.0
1681.0
1674.0
25.36
0.330
1692.00
0.37
0.27
BM
1760.0
1710.0
1730.0
25.17
0.352
1733.33
1.22
1.12
BO
1790.0
1680.0
1680.0
63.51
0.773
1716.67
0.88
0.78
BW
•
C
1708.0
1673.0
1693.0
17.56
0.246
1691.33
0.36
0.25
CA
1660.0
1590.0
1600.0
37.86
0.492
1616.67
-1.18
-1.29
CJ
1640.0
1610.0
1610.0
17.32
0.211
1620.00
-1.11
-1.22
CO
1798.0
1724.0
1741.0
38.76
0.520
1754.33
1.66
1.55
CP
*
CQ
1354.0
1413.0
1453.0
49.80
0.696
1406.67
-5.51
-5.62
D
1761.0
1569.0
1026.0
381.21
8.940
1452.00
-4.58
-4.68
U
DD
1730.0
1730.0
1650.0
46.19
0.563
1703.33
0.60
0.50
DE
1520.0
1520.0
1525.0
2.89
0.035
1521.67
-3.14
-3.24
JJ
DL
¦ •
DM
1630.0
1634.0
1644.0
7.21
0.098
1636.00
-0.78
-0.89
DT
1580.0
1640.0
1620.0
30.55
0.422
1613.33
-1.25
-1.35
DY
1771.0
1736.0
1782.0
24.02
0.323
1763.00
1.83
1.73
E
1774.0
1754.0
1709.0
33.29
0.457
1745.67
1.48
1.37
EA
1714.0
1725.0
1669.0
29.67
0.394
1702.67
0.59
0.49
EB
•
EH
1650.0
1680.0
1670.0
15.28
0.211
1666.67
-0.15
-0.25
EL
1725.0
1681.0
1670.0
29.10
0.387
1692.00
0.37
0.27
EX
•
FE
1740.0
1680.0
1700.0
30.55
0.422
1706.67
0.67
0.57
FL
•
GE
HU
1435.0
1461.0
1487.0
26.00
0.366
1461.00
-4.39
-4.50
• S
No data submitted
TAG SYMBOLS
ft = Above control limit
U-
Insufficient data
x =
Determined to be an outlier
II = Below control limit
v
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 25 / 27
Total Potassium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
HX
I
1748.0
1718.0
1818.0
51.32
0.703
1761.33
1.80
1.70
IC
1684.0
1700.0
1701.0
9.54
0.120
1695.00
0.43
0.33
IU
1660.0
1640.0
1650.0
10.00
0.141
1650.00
-0.50
-0.60
J
1645.0
1659.0
1668.0
11.59
0.162
1657.33
-0.35
-0.45
JR
1590.0
1600.0
1620.0
15.28
0.211
1603.33
-1.46
-1.56
JS
1899.0
1839.0
1942.0
51.73
0.724
1893.33
4.52
4.42
ft
K
1626.0
1629.0
1676.0
28.04
0.352
1643.67
-0.63
-0.73
KL
1758.0
1805.0
1781.0
23.50
0.330
1781.33
2.21
2.11
KX
1660.0
1640.0
1620.0
20.00
0.281
1640.00
-0.70
-0.80
L
1564.0
1556.0
1570.0
7.02
0.098
1563.33
-2.28
-2.39
LA
LB
•
LF
1700.0
1600.0
1700.0
57.74
0.703
1666.67
-0.15
-0.25
LM
LR
1806.0
1711.0
1912.0
100.55
1.787
1809.67
2.80
2.69
M
1590.0
1510.0
1610.0
52.92
0.703
1570.00
-2.15
-2.25
MA
1734.0
1722.0
1746.0
12.00
0.169
1734.00
1.24
1.13
ML
1460.0
1600.0
1470.0
78.10
0.984
1510.00
-3.38
-3.48
u
MP
1446i0
1435.0
109310
200i70
3.823
1324.67
-7.20
7.31
X
MQ
1763.0
1590.0
1764.0
100.17
1.426
1705.67
0.65
0.55
MS
MV
1706.0
1714.0
1706.0
4.62
0.056
1708.67
0.71
0.61
N
1732.0
1776.0
1704.0
36.30
0.506
1737.33
1.30
1.20
NH
1824.0
1850.0
1821.0
15.95
0.204
1831.67
3.25
3.15
ft
NJ
•
O
1678.0
1678.0
1655.0
13.28
0.162
1670.33
-0.08
-0.18
PB
1763.0
1728.0
1746.0
17.50
0.246
1745.67
1.48
1.37
PC
992,0
10620
112&0
67.12
0.942
1056,67
-i2:W>
-12.83
X
PI
•
PM
1600.0
1600.0
1700.0
57.74
0.703
1633.33
-0.84
-0.94
PP
1486.0
1465.0
1506.0
20.50
0.288
1485.67
-3.88
-3.99
u
PT
1530.0
1597.0
1597.0
38.68
0.471
1574.67
-2.05
-2.15
PV
1720.0
1670.0
1680.0
26.46
0.352
1690.00
0.33
0.23
PW
2329#
2290;0
2351.0
30.89
0.429
2323,33
13.39
13.29
X
PT
•
Q
1615.0
1590.0
1638.0
24.01
0.338
1614.33
-1.23
-1.33
QB
1710.0
1730.0
1780.0
36.06
0.492
1740.00
1.36
1.26
QJ
1900.0
1370.0
1600.0
265.77
6.194
1623.33
-1.05
-1.15
QK
1688.0
1720.0
1710.0
16.37
0.225
1706.00
0.66
0.56
QL
1550.0
1612.0
1730.0
91.44
1.506
1630.67
-0.89
-1.00
QX
1648.0
1688.0
1733.0
42.52
0.598
1689.67
0.32
0.22
QZ
m
R
1613.0
1599.0
1562.0
26.35
0.359
1591.33
-1.71
-1.81
RA
•
• 3
0 5
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
U s Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993
Total Potassium
>,
Lab Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
RC
•
RK 17291.0
16728.0
17854.0 563.00
14.177
17291.00 322.02
321.91
X
S 1660.0
1630.0
1630.0 17.32
0.211
1640.00 -0.70
-0.80
8M
•
SS 1762.0
1990.0
1637.0 178.99
3.823
1796.33 2.52
2.42
T 1605.0
1576.0
1644.0 34.12
0.478
1608.33 -1.36
-1.46
TA 1580.0
1630.0
1580.0 28.87
0.352
1596.67 -1.60
-1.70
TD 1630.0
1610.0
1620.0 10.00
0.141
1620.00 -1.11
i
1-^
to
to
TE 1690.0
1698.0
1688.0 5.29
0.070
1692.00 0.37
0.27
TI 1807.0
1862.0
1771.0 45.83
0.640
1813.33 2.87
2.77
TP
0
TQ 1646.0
1753.0
1491.0 131.73
2.604
1630.00 -0.91
-1.01
TS
•
TV
•
TW
•
U 1795.0
1698.0
1576.0 109.74
2.028
1689.67 0.32
0.22
UB
9
VG 1880.0
1890.0
1880.0 5.77
0.070
1883.33 4.31
4.21
W 1659.0
1766.0
1695.0 54.45
0.752
1706.67 0.67
0.57
WA 1733.0
1723.0
1705.0 14.19
0.197
1720.33 0.95
0.85
Y 1630.0
1670.0
1760.0 66.58
0.914
1686.67 0.26
0.16
Data sorted by Laboratory Averag
fe
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1056.67
X
PC
1620.00
TD
1690.00
PV
1324.67
X
MP
1620.00
CJ
1691.33
C
1406.67
u
CQ
1620.67
AF
1692.00
TE
1452.00
u
D
1623.33
QJ
1692.00
EL
1461.00
li
HU
1630.00
TQ
1692.00
BL
1485.67
PP
1630.00
AU
1695.00
IC
1510.00
ML
1630.67
QL
1702.67
EA
1521.67
u
DE
1633.33
PM
1703.33
DD
1563.33
L
1636.00
DM
1705.67
MQ
1570.00
M
1640.00
S
1706.00
QK
1573.67
AY
1640.00
KX
1706.67
W
1574.67
PT
1643.67
K
1706.67
FE
1591.33
R
1650.00
IU
1708.67
MV
1593.33
BH
1657.33
J
1716.00
BA
1596.67
TA
1666.67
LF
1716.67
BO
1601.67
AH
1666.67
EH
1719.67
AN
1603.33
JR
1666.67
AI
1720.33
WA
1608.33
T
1670.33
O
1733.33
BM
1613.33
DT
1686.67
Y
1734.00
MA
1614.33
Q
1689.67
U
1737.33
N
1616.67
CA
1689.67
QX
1740.00
QB
• = No data submitted
TAG SYMBOLS
ft = Above control limit
{ 0 = Insufficient data
x = Determined to be an outlier
s Below control limit
jj
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 24-Sep-1993 27/27
H
Total Potassium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
1745.67
PB
1781.33
KL
1836.67
ft
AJ
1745.67
E
1793.33
AL
1844.67
ft
AA
1754.33
CO
1796.33
SS
1883.33
ft
VG
1761.33
I
1809.67
LR
1893.33
ft
JS
1763.00
DY
1813.33
TT
2157.67
X
A
1771.33
AK
1831.67
ft NH
2323.33
X
PW
17291.00
X
RK
% responding labs
Frequency distribution
10-
JU.
JUL
:¦ f.h
-6
% responding labs
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
—r*
+6
10-
SL
¦i , ¦¦¦
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
—r~
*6
• s No data submitted TAG SYMBOLS IT s Above control limit
0 = Insufficient data x = Determined to be an outlier = Below control limit J
-------
United States Environmental Monitoring EPA 600/R-93/237
Environmental Protection Systems Laboratory October 1993
Agency P.O Box 93478
Las Vegas NV 89193-3478
Research and Development
Iodine in Water Performance
Evaluation Study
A Statistical Evaluation of the
October 8, 1993 Data
9312-0138md237
-------
Iodine in Water
Performance Evaluation Study
October 8, 1993
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; October 8, 1993.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. if there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
EMSL-LV Performance Evaluation: Iodine in Water, 8-Oct-1993
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 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.
-------
— -Sj.
2/8 EMSL-LV Performance Evaluation: Iodine in Water, 8-Oct-1993
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, 8-Oct-1993
3/8
Iodine-131 Statistical Summary 140 Participants
The known value of this nuclide is 117.0 pCi/1 with an expected precision of 12.0; the control limits
are 96.2 to 137.8; the warning regions are 96.2 to 103.1 and 130.9 to 137.8
Statistic Respondents Non-outliers
Mean
114.80
Grand Avg 117.68
Std. Dev.
21.33
10.62
Variance
455.02
112.68
% Coef. of Var.
18.58
9.02
% deviation of mean from known value
-1.88
0.58
Norm. dev. of mean from known value
-0.10
0.06
Median
117.00
117.33
% deviation of median from known value
0.00
0.28
Norm. dev. of median from known value
0.00
0.03
-------
f,
4/8
EMSL-LV Performance Evaluation: Iodine in Water,
8-Oct-1993
^
Iodine-131
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
111.0
106.0
109.0
2.52
0.246
108.67
-1.30
-1.20
AA
112.0
114.0
113.0
1.00
0.098
113.00
-0.67
-0.58
AF
121.0
118.0
120.0
1.53
0.148
119.67
0.29
0.38
AI
21.0
21.0
21.0
0.00
0.000
21.00
-13.95
-13.86 x
AJ
119.0
119.0
107.0
6.93
0.591
115.00
-0.39
-0.29
AK
118.0
120.0
123.0
2.52
0.246
120.33
0.38
0.48
AL
118.0
118.0
117.0
0.58
0.049
117.67
0.00
0.10
AN
113.0
114.0
110.0
2.08
0.197
112.33
-0.77
-0.67
AP
115.0
120.0
112.0
4.04
0.394
115.67
-0.29
-0.19
AU
116.0
112.0
119.0
3.51
0.345
115.67
-0.29
-0.19
AW
116.0
114.0
123.0
4.73
0.443
117.67
0.00
0.10
AY
117.0
119.0
127.0
5.29
0.492
121.00
0.48
0.58
AY
118.0
120.0
124.0
3.06
0.295
120.67
0.43
0.53
AZ
120.0
123.0
124.0
2.08
0.197
122.33
0.67
0.77
BA
114.0
115.0
121.0
3.79
0.345
116.67
-0.15
-0.05
BC
122.0
119.0
112.0
5.13
0.492
117.67
0.00
0.10
BH
142.0
146.0
141.0
2.65
0.246
143.00
3.66
3.75 ft
BL
102.0
105.0
104.0
1.53
0.148
103.67
-2.02
-1.92
BM
123.0
123.0
121.0
1.15
0.098
122.33
0.67
0.77
BO
112.0
117.0
117.0
2.89
0.246
115.33
-0.34
-0.24
BW
•
C
118.0
120.0
119.0
1.00
0.098
119.00
0.19
0.29
CA
118.0
114.0
118.0
2.31
0.197
116.67
-0.15
-0.05
CE
129.0
128.0
120.0
4.93
0.443
125.67
1.15
1.25
CJ
100.0
110.0
100.0
5.77
0.492
103.33
-2.07
-1.97
CP
118.0
116.0
121.0
2.52
0.246
118.33
0.09
0.19
CQ
119.0
111.0
118.0
4.36
0.394
116.00
-0.24
-0.14
D
107.0
114.0
121.0
7.00
0.689
114.00
-0.53
-0.43
DD
127.0
126.0
125.0
1.00
0.098
126.00
1.20
1.30
DE
120.0
121.0
121.0
0.58
0.049
120.67
0.43
0.53
DJ
•
DL
120.0
119.0
120.0
0.58
0.049
119.67
0.29
0.38
DM
115.0
118.0
120.0
2.52
0.246
117.67
0.00
0.10
DR
118.0
121.0
121.0
1.73
0.148
120.00
0.34
0.43
DT
129.0
129.0
135.0
3.46
0.295
131.00
1.92
2.02
DY
124.0
125.0
125.0
0.58
0.049
124.67
1.01
1.11
E
116.0
118.0
119.0
1.53
0.148
117.67
0.00
0.10
EB
108.0
117.0
115.0
4.73
0.443
113.33
-0.63
-0.53
EH
112.0
111.0
110.0
1.00
0.098
111.00
-0.96
-0.87
EL
104.0
132.0
120.0
14.05
1.720
118.67
0.14
0.24
EX
116.0
117.0
135.0
10.69
0.935
122.67
0.72
0.82
EZ
•
FE
115.0
118.0
112.0
3.00
0.295
115.00
-0.39
-0.29
FK
129.0
144.0
136.0
7.51
0.738
136.33
2.69
2.79
FL
120.0
120.0
130.0
5.77
0.492
123.33
0.82
0.91
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
in
IS
Insufficient data
x =
Determined to be an outlier
It s Below control limit
y
-------
ft
EMSL-LV Performance Evaluation: Iodine in Water,
8-Oct-1903
5/8
Iodine-131
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
FU
125.0
128.0
130.0
2.52
0.246
127.67
1.44
1.54
GE
120.0
120.0
119.0
0.58
0.049
119.67
0.29
0.38
GI
109.0
113.0
115.0
3.06
0.295
112.33
-0.77
-0.67
HJ
115.0
119.0
112.0
3.51
0.345
115.33
-0.34
-0.24
HK
108.0
109.0
107.0
1.00
0.098
108.00
-1.40
-1.30
HP
•
HU
106.0
103.0
101.0
2.52
0.246
103.33
-2.07
-1.97
HX
•
I
115.0
125.0
120.0
5.00
0.492
120.00
0.34
0.43
IA
62.0
68;0
73.0
5.51
0.541
67.67
-7j22
-7.12
X
IC
124.0
116.0
120.0
4.00
0.394
120.00
0.34
0.43
IU
120.0
113.0
118.0
3.61
0.345
117.00
-0.10
0.00
J
119.0
119.0
120.0
0.58
0.049
119.33
0.24
0.34
JR
•
JS
126.0
128.0
114.0
7.57
0.689
122.67
0.72
0.82
JY
160.0
144.0
130.0
15.01
1.908
144.67
3.90
3.99
ft
K
112.0
111.0
111.0
0.58
0.049
111.33
-0.92
-0.82
KL
124.0
126.0
118.0
4.16
0.394
122.67
0.72
0.82
KM
110.0
118.0
108.0
5.29
0.492
112.00
-0.82
-0.72
KX
103.0
107.0
105.0
2.00
0.197
105.00
-1.83
-1.73
L
1110
1080
107.0
2.08
0.197
108.67
-1.30
-1.20
LA
•-
LF
120.0
120.0
120.0
0.00
0.000
120.00
0.34
0.43
LR
101.0
96.0
99.0
2.52
0.246
98.67
-2.74
-2.65
M
95.0
97.0
97.0
1.15
0.098
96.33
-3.08
-2.98
MA
116.0
115.0
115.0
0.58
0.049
115.33
-0.34
-0.24
ML
123.0
103.0
100.0
12.50
1.252
108.67
-1.30
-1.20
MN
- •
MP
108.0
118.0
122.0
7.21
0.689
116.00
-0.24
-0.14
MQ
162,0
163.0
173.0
6.08
0.641
166.00
. 6.97
701
X
MS
•
MV
120.0
117.0
131.0
7.37
0.689
122.67
0.72
0.82
N
124.0
126.0
125.0
1.00
0.098
125.00
1.06
1.15
NH
131.0
128.0
128.0
1.73
0.148
129.00
1.63
1.73
NJ
120.0
100.0
110.0
10.00
0.984
110.00
-1.11
-1.01
NZ
79.0
86.0
100.0
10.69
1.064
88.33
-4.24
-4.14
U
O
121.0
121.0
121.0
0.00
0.000
121.00
0.48
0.58
OA
112.0
126.0
109.0
9.07
0.837
115.67
-0.29
-0.19
OB
121.0
118.0
114.0
3.51
0.345
117.67
0.00
0.10
OL
•
OT
• ¦
PB
110.0
113.0
107.0
3.00
0.295
110.00
-1.11
-1.01
PC
82.0
85.0
90.0
4.04
0.394
85.67
-4.62
-4.52
PE
65.C
64.0
67.0
1.53
0.148
65.33
-7*55
-7.46
X
PT
110.0
123.0
116.0
6.51
0.640
116.33
-0.19
-0.10
• =
No data submitted
TAG SYMBOLS
11 = Above control limit
L0-
Insufficient data
x =
Determined to be an outlier
= Below control limit
o
-------
6/8
EMSL-LV Performance Evaluation: Iodine in Water,
8-Oct-1993
Iodine-131
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PV
108.0
110.0
112.0
2.00
0.197
110.00
-1.11
-1.01
PW
124.0
143.0
135.0
9.54
0.935
134.00
2.36
2.45
Q
121.0
116.0
114.0
3.61
0.345
117.00
-0.10
0.00
QB
140.0
160.0
140.0
11.55
0.984
146.67
4.18
4.28
ft
QJ
121.0
116.0
118.0
2.52
0.246
118.33
0.09
0.19
QK
117.0
117.0
117.0
0.00
0.000
117.00
-0.10
0.00
QL
132.0
124.0
111.0
10.60
1.064
122.33
0.67
0.77
QQ
•
QU
99.0
112.0
94.0
9.29
0.886
101.67
-2.31
-2.21
ox
138.0
143.0
126.0
8.74
0.837
135.67
2.60
2.69
R
112.0
113.0
113.0
0.58
0.049
112.67
-0.72
-0.63
RC
107.0
107.0
107.0
0.00
0.000
107.00
-1.54
-1.44
RL
•
RM
83.0
76.0
81.0
3.61
0.345
80.00
-5.44
-5.34
X
RQ
•
s
115.0
115.0
122.0
4.04
0.345
117.33
-0.05
0.05
SF
100.0
102.0
100.0
1.15
0.098
100.67
-2.46
-2.36
SK
36.0
66.0
43.0
10.60
1.064
44.67
-10.64
-10.44
X
SM
104.0
127.0
97.0
15.70
1.908
109.33
-1.20
-1.11
SS
112.0
114.0
119.0
3.61
0.345
115.00
-0.39
-0.29
SW
114.0
130.0
126.0
8.33
0.788
123.33
0.82
0.91
sz
128.0
120.0
124.0
4.00
0.394
124.00
0.91
1.01
TA
87.0
131.0
121.0
23.07
3.221
113.00
-0.67
-0.58
TC
34.0
23.0
28.0
5.61
0.541
28.33
-12,90
-12.80
X
TD
152.0
142.0
138.0
7.21
0.689
144.00
3.80
3.90
ft
TE
•
TG
144.0
149.0
146.0
2.52
0.246
146.33
4.14
4.23
ft
TH
121.0
122.0
118.0
2.08
0.197
120.33
0.38
0.48
TI
113.0
109.0
113.0
2.31
0.197
111.67
-0.87
-0.77
TL
144.0
140.0
142.0
2.00
0.197
142.00
3.51
3.61
ft
TQ
117.0
114.0
116.0
1.53
0.148
115.67
-0.29
-0.19
TR
•
TS
~
TV
•
TW
•
U
107.0
124.0
98.0
13.20
1.533
109.67
-1.16
-1.06
UB
•
UC
•
UE
130.0
130.0
135.0
2.89
0.246
131.67
2.02
2.12
UI
•
UN
117.0
113.0
118.0
2.65
0.246
116.00
-0.24
-0.14
UP
113.0
115.0
117.0
2.00
0.197
115.00
-0.39
-0.29
uw
116.0
119.0
116.0
1.73
0.148
117.00
-0.10
0.00
UY
120.0
133.0
132.0
7.23
0.640
128.33
1.54
1.64
VA
193.0
193.0
200.0
4.04
0.345
195.33
11.21
11.31
X
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 -
Insufficient data
x =
Determined to be an outlier
li = Below control limit
^ -4/
-------
r,
^
EMSL-LV Performance Evaluation: Iodine in Water, 8-Oct-1993
7/8
[ Iodine-131
Exper.
Rng anal
Normalized deviation
Lab Res. 1
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg)
(known) Tag
VC 103.0
103.0
95.0 4.62
0.394
100.33 -2.50
-2.41
W 113.0
111.0
99.0 7.57
0.689
107.67 -1.44
-1.35
X 51.0
51.0
53.0 1.15
0.098
51.67 -9.53
-9.43
X
Y 123.0
115.0
133.0 9.02
0.886
123.67 0.86
0.96
Z 118.0
117.0
117.0 0.58
0.049
117.33 -0.05
0.05
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
21.00
X
AI
113.00
AA
119.67
GE
28.33
X
TC
113.33
EB
119.67
DL
44.67
X
SK
114.00
D
119.67
AF
51.67
X
X
115.00
UP
120.00
LF
65.33
X
PE
115.00
SS
120.00
IC
67.67
X
IA
115.00
FE
120.00
I
80.00
X
RM
115.00
AJ
120.00
DR
85.67
4
PC
115.33
MA
120.33
TH
88.33
u
NZ
115.33
HJ
120.33
AK
96.33
M
115.33
BO
120.67
DE
98.67
LR
115.67
TQ
120.67
AY
100.33
VC
115.67
OA
121.00
O
100.67
SF
115.67
AU
121.00
AY
101.67
QU
115.67
AP
122.33
QL
103.33
HU
116.00
UN
122.33
BM
103.33
CJ
116.00
MP
122.33
AZ
103.67
BL
116.00
CQ
122.67
MV
105.00
KX
116.33
PT
122.67
KL
107.00
RC
116.67
CA
122.67
JS
107.67
W
116.67
BA
122.67
EX
108.00
HK
117.00
UW
123.33
SW
108.67
ML
117.00
QK
123.33
FL
108.67
L
117.00
Q
123.67
Y
108.67
A
117.00
IU
124.00
SZ
109.33
SM
117.33
Z
124.67
DY
109.67
U
117.33
S
125.00
N
110.00
PV
117.67
OB
125.67
CE
110.00
PB
117.67
E
126.00
DD
110.00
NJ
117.67
DM
127.67
FU
111.00
EH
117.67
BC
128.33
UY
111.33
K
117.67
AW
129.00
NH
111.67
TI
117.67
AL
131.00
DT
112.00
KM
118.33
QJ
131.67
UE
112.33
GI
118.33
CP
134.00
PW
112.33
AN
118.67
EL
135.67
QX
112.67
R
119.00
C
136.33
FK
113.00
TA
119.33
J
142.00
It
TL
• a No data submitted
TAG SYMBOLS
IT = Above control limit
0 = Insufficient data
x s Determined to be an outlier
U = Below control limit
-------
8/8 EMSL-LV Performance Evaluation: Iodine in Water, 8-Oct-1993
Iodine-131
Data norted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag
Lab
143.00
ft
BH
144.67 ft
JY
146.67
ft
QB
144.00
tr
TD
146.33 ft
TG
166.00
X
MQ
195.33
X
VA
% responding labs
Frequency distribution
lo-
ci
-¦j- -ifl-ljllllf -
-"j*
-6
-2 0 +2
Normalized deviation of the mean from the known value
+6
responding labs Frequency distribution
10-
IIT|||||||.I.—
f ¦¦ ,—"M-
•6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x = Determined to be an outlier !)¦ = Below control limit ,
V- -
-------
United States Environmental Monitoring EPA 600/R-94/015A
Environmental Protection Systems Laboratory October 1993
Agency P 0. Box 93478
Las Vegas NV 89193-3478
Research and Development
Blind-A Performance
Evaluation Study
A Statistical Evaluation of
the October 19,1993 Data
-------
Blind-A
Performance Evaluation Study
October 19, 1993
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
\y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS. NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Blind-A; October 19, 1993.
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.
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-A, 19-Oct-1993 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.
-------
2/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
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-A, 19-Oct-1993
3/34
Gross Alpha Statistical Summary 219 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 10.0; the control limits
are 22.7 to 57.3; the warning regions are 22.7 to 28.4 and 51.6 to 57.3
60(27.4 %) Failed to respond ,
6(2.7 %) Outliers »
9(4.1 %) Out of control '
but not an outlier
Statistic
. 132(60.3 %) Within all limits
Respondents
"* 12(5.5 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
47.94
61.18
3742.45
127.61
19.85
0.13
40.00
0.00
0.00
Grand Avg 40.77
8.27
68.33
20.28
1.92
0.09
40.00
0.00
0.00
15(9.4 %) More than 3 norm. S.D.
12(7.5 %) Between 2 and 3 norm. S.D. •
,83(52.2 %) Within 1 norm. S.D.
® of known value
49(30.8 %) Between 1 and 2 norm. S.D.
-------
-
4/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
^
Gross Alpha
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average•
(grand-avg)
(known) Tae
A
49.0
48.0
50.0
1.00
0.118
49.00
1.43
1.56
AA
40.0
37.0
38.0
1.53
0.177
38.33
-0.42
-0.29
AE
40.0
36.0
38-0
2.00
0.236
38.00
-0.48
-0.35
AF
44.0
44.0
400
2.31
0.236
42.67
0.33
0.46
AI
•
AJ
•
AK
30.0
35.0
30.0
2.89
0.295
31.67
-1.58
-1.44
AL
37.0
38.0
37.0
0.58
0.059
37.33
-0.59
-0.46
AO
39.0
38.0
30.0
4.93
0.532
35.67
-0.88
-0.75
AP
44.0
39.0
43.0
2.65
0.295
42.00
0.21
0.35
AR
47.0
41.0
44.0
3.00
0.354
44.00
0.56
0.69
AU
51.0
52.0
53.0
1.00
0.118
52.00
1.95
2.08
AW
32.0
38.0
36.0
3.06
0.354
35.33
-0.94
-0.81
AZ
34.0
40.0
38.0
3.06
0.354
37.33
-0.59
-0.46
BA
39.0
39.0
39.0
0.00
0.000
39.00
-0.31
-0.17
BC
38.0
37.0
37.0
0.58
0.059
37.33
-0.59
-0.46
BG
•
BH
44.0
45.0
39.0
3.21
0.354
42.67
0.33
0.46
BK
45.0
46.0
42.0
2.08
0.236
44.33
0.62
0.75
BL
•
BM
39.0
41.0
41.0
1.15
0.118
40.33
-0.08
0.06
BN
57.0
58.0
59.0
1.00
0.118
58.00
2.98
3.12
It
BO
43.0
43.0
39.0
2.31
0.236
41.67
0.16
0.29
BS
46.0
45.0
45.0
0.58
0.059
45.33
0.79
0.92
BW
•
C
32.0
32.0
33.0
0.58
0.059
32.33
-1.46
-1.33
CA
41.0
38.0
40.0
1.53
0.177
39.67
-0.19
-0.06
CE
38.0
36.0
41.0
2.52
0.295
38.33
-0.42
-0.29
CG
35.0
39.0
42.0
3.51
0.413
38.67
-0.36
-0.23
CJ
40.0
40.0
39.0
0.58
0.059
39.67
-0.19
-0.06
CK
38.0
37.0
46.0
4.93
0.532
40.33
-0.08
0.06
CM
• -
CO
39.0
36.0
40.0
2.08
0.236
38.33
-0.42
-0.29
CP
32.0
30.0
30.0
1.15
0.118
30.67
-1.75
-1.62
CQ
41.0
42.0
45.0
2.08
0.236
42.67
0.33
0.46
CS
39.0
39.0
39.0
0.00
0.000
39.00
-0.31
-0.17
CX
41.0
40.0
39.0
1.00
0.118
40.00
-0.13
0.00
D
41.0
40.0
41.0
0.58
0.059
40.67
-0.02
0.12
DB
40.0
40.0
38.0
1.15
0.118
39.33
-0.25
-0.12
DD
27.0
25.0
22.0
2.52
0.295
24.67
-2.79
-2.66
DE
48.0
48.0
48.0
0.00
0.000
48.00
1.25
1.39
DG
•
DJ
•
DL
•
DM
•
• s No data submitted
TAG SYMBOLS
It = Above control limit
0 = Insufficient data
X s
Determined to be an outlier
U = Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-ave) (known) Tae
DO
0
DS
•
DT
32.0
32.0
32.0
0.00
0.000
32.00
-1.52
-1.39
DZ
42.0
43.0
42.0
0.58
0.059
42.33
0.27
0.40
E
39.0
42.0
39.0
1.73
0.177
40.00
-0.13
0.00
EB
34.0
35.0
35.0
0.58
0.059
34.67
-1.06
-0.92
EH
53.0
54.0
39.0
8.39
0.886
48.67
1.37
1.50
EL
•
EO
45.0
45.0
46.0
0.58
0.059
45.33
0.79
0.92
EB
• .
EV
30.0
32.0
31.0
1.00
0.118
31.00
-1.69
-1.56
EX
~
FE
53.0
54.0
54.0
0.58
0.059
53.67
2.23
2.37
FF
43.0
42.0
46.0
2.08
0.236
43.67
0.50
0.64
FJ
27.0
32.0
34.0
3.61
0.413
31.00
-1.69
-1.56
FL
FN
38.0
39.0
42.0
2.08
0.236
39.67
-0.19
-0.06
FU
40.0
41.0
42.0
1.00
0.118
41.00
0.04
0.17
FZ
23.0
31.0
30.0
4.36
0.473
28.00
.9 91
.9 AQ
QW
9
G
•
G
32.0
31.0
29.0
1.53
U.177
30.67
-1.75
-1.62
GL
472.0
467;0
497.0
16.07
2.470
478,67
'5.85
75.98
X
GZ
32.0
33.0
34.0
1.00
0.118
33.00
¦1.35
-1.21
HH
10.0
11.0
10.0
0;58
0.069
10.33
¦6.27
-5il4
X
m
80.0
82.0
83.0
1.53
0.177
81.67
7.08
7.22
X
HK
51.0
46.0
53.0
3.61
0.413
50.00
1.60
1.73
HL
58.0
58.0
58.0
0.00
0.000
58.00
2.98
3.12
tr
HN
47.0
50.0
57.0
5.13
0.591
51.33
1.83
1.96
HP
40.0
39.0
41.0
1.00
0.118
40.00
-0.13
0.00
HU
54.0
50.0
50.0
2.31
0.236
51.33
1.83
1.96
HX
»
I
33.0
30.0
29.0
Z.UO
U.Z36
30.67
-1.75
-1.62
IA
. ~
IC
39.0
35.0
38.0
2.08
0.236
37.33
-0.59
-0.46
ID
38.0
36.0
37.0
1.00
0.118
37.00
-0.65
-0.52
IE
it
29.0
30.0
31.0
1.00
0.118
30.00
-1.86
-1.73
11
IU
•
•
J
41.0
42.0
38.0
2.08
0.236
40.33
-0.08
0.06
eJE
39.0
39.0
39.0
0.00
0.000
39.00
-0.31
-0.17
JG
48.0
48.0
48.0
0.00
0.000
48.00
1.25
1.39
JH
•
JN
61.0
56.0
63.0
3.61
0.413
60.00
3.33
3.46
ir
JQ
45.0
45.0
42.0
1.73
0.177
44.00
0.56
0.69
• 3 No data submitted
0 s Insufficient data
X 3
TAG SYMBOLS
Determined to be an outlier
1T a Above control limit
11 = Below control limit
&
-------
ft
6/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
^
Gross Alpha
"V
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
45.0
39.0
45.0
3.46
0.354
43.00
0.39
0.52
JX
•
JY
32.0
35.0
34.0
1.53
0.177
33.67
-1.23
o
rH
i
K
46.0
40.0
38.0
4.16
0.473
41.33
0.10
0.23
KE
37.0
38.0
39.0
1.00
0.118
38.00
-0.48
-0.35
KF
•
KT
67.0
65.0
69.0
2.00
0.236
67.00
4.54
4.68
It
KX
56.0
53.0
55.0
1.53
0.177
54.67
2.41
2.54
KZ
43.0
44.0
45.0
1.00
0.118
44.00
0.56
0.69
L
39.0
40.0
40.0
0.58
0.059
39.67
-0.19
-0.06
LA
•
LE
•
LF
44.0
44.0
47.0
1.73
0.177
45.00
0.73
0.87
LG
75 0
74.0
73.0
1.00
0.118
74.00
5.76
5.89
X
LL
44.0
46.0
44.0
1.15
0.118
44.67
0.68
0.81
LM
•
LR
40.0
41.0
39.0
1.00
0.118
40.00
-0.13
0.00
LT
55.0
55.0
55.0
0.00
0.000
55.00
2.47
2.60
M
28.0
27.0
27.0
0.58
0.059
27.33
-2.33
-2.19
MA
•
MN
•
MO
•
MP
•
MQ
36.0
46.0
40.0
5.03
0.591
40.67
-0.02
0.12
MS
37.0
37.0
38.0
0.58
0.059
37.33
-0.59
-0.46
MV
60.0
62.0
60.0
1.15
0.118
60.67
3.45
3.58
ft
MY
•
N
•
NA
41.0
42.0
43.0
1.00
0.118
42.00
0.21
0.35
NG
38.0
45.0
44.0
3.79
0.413
42.33
0.27
0.40
NH
50.0
53.0
44.0
4.58
0.532
49.00
1.43
1.56
NJ
43.0
45.0
41.0
2.00
0.236
43.00
0.39
0.52
NK
NO
36.0
38.0
40.0
2.00
0.236
38.00
-0.48
-0.35
NT
43.0
43.0
44.0
0.58
0.059
43.33
0.44
0.58
O
38.0
38.0
38.0
0.00
0.000
38.00
-0.48
-0.35
OF
64.0
68.0
69.0
2.65
0.295
67.00
4.54
4.68
ft
OS
36.0
39.0
41.0
2.52
0.295
38.67
-0.36
-0.23
OX
33.0
34.0
35.0
1.00
0.118
34.00
-1.17
-1.04
OY
53.0
53.0
55.0
1.15
0.118
53.67
2.23
2.37
OZ
•
P
50.0
53.0
35.0
9.64
1.120
46.00
0.91
1.04
PA
31.0
28.0
32.0
2.08
0.236
30.33
-1.81
-1.67
PB
31.0
33.0
32.0
1.00
0.118
32.00
-1.52
-1.39
PC
43.0
43.0
43.0
0.00
0.000
43.00
0.39
0.52
• =
No data submitted
TAG SYMBOLS
1T s Above control limit
0 =
^
Insufficient data
X S
Determined to be an outlier
<11 s Below control limit
-------
f,
>•
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
^
7/34
I
Gross Alpha
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PG
35.0
36.0
36.0
0.58
0.059
35.67
-0.88
-0.75
PI
•
PM
46.0
50.0
50.0
2.31
0.236
48.67
1.37
1.50
PP
~
PQ
40.0
37.0
39.0
1.53
0.177
38.67
-0.36
-0.23
PR
38.0
38.0
36.0
1.15
0.118
37.33
-0.59
-0.46
PT
43.0
37.0
39.0
3.06
0.354
39.67
-0.19
-0.06
PV
57.0
42.0
44.0
8.14
0.886
47.67
1.20
1.33
PW
•
PY
•
Q
32.0
31.0
32.0
0.58
0.059
31.67
-1.58
-1.44
QC
44.0
48.0
48.0
2.31
0.236
46.67
1.02
1.15
QJ
42.0
44.0
39.0
2.52
0.295
41.67
0.16
0.29
QK
QL
•< -
QP
..WW
0.236
35.67
-0.88
-0.75
QQ
53.0
56.0
51.0
2.52
0.295
53.33
2.18
2.31
QT
52.0
70.0
67.0
9.64
1.120
63.00
3.85
3.98
ft
QU
57.0
53.0
63.0
5.03
0.591
57.67
2.93
3.06
It
QW
37.0
32.0
32.0
2.89
0.295
33.67
-1.23
-1.10
QX
33.0
34.0
33.0
0.58
0.059
33.33
-1.29
-1.15
QZ
33.0
32.0
30.0
1.53
0.177
31.67
-1.58
-1.44
RC
•
RD
cjy.u
32.0
42.0
5.13
0.591
37.67
-0.54
-0.40
RE
50.0
53.0
51.0
1.53
0.177
51.33
1.83
1.96
RF
33.0
32.0
32.0
0.58
0.059
32.33
-1.46
-1.33
RG
30.0
32.0
34.0
2.00
0.236
32.00
-1.52
-1.39
RJ
46.0
39.0
36.0
5.13
0.591
40.33
-0.08
0.06
RK
58.0
50.0
52.0
4.16
0.473
53.33
2.18
2.31
RL
•
RM
47.0
47.0
48.0
0.58
0.059
47.33
1.14
1.27
RK:
•
RR
V
RT
•
RV
34.0
30.0
33.0
2.08
0.236
32.33
-1.46
-1.33
RZ
41.0
42.0
43.0
1.00
0.118
42.00
0.21
0.35
S
40.0
39.0
40.0
0.58
0.059
39.67
-0.19
-0.06
sc
38.0
37.0
41.0
2.08
0.236
38.67
-0.36
-0.23
SD
38.0
44.0
41.0
3.00
0.354
41.00
0.04
0.17
SF
43.0
42.0
41.0
1.00
0.118
42.00
0.21
0.35
SI
31.0
29.0
26.0
2.52
0.295
28.67
-2.10
-1.96
SL
56.0
53.0
57.0
2.08
0.236
55.33
2.52
2.66
SM
33.0
30.0
32.0
1.53
0.177
31.67
-1.58
-1.44
SO
31.0
31.0
32.0
0.58
0.059
31.33
-1.63
-1.50
SR
47.0
41.0
44.0
3.00
0.354
44.00
0.56
0.69
• 3
No data submitted
TAG SYMBOLS
ft s Above control limit
III
Q
Insufficient data
x =
Determined to be an outlier
U s Below control limit
'J
-------
8/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Gross Alpha
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
S3
36.0
39.0
38.0
1.53
0.177
37.67
¦0.54
-0.40
ST
37.0
37.0
37.0
0.00
0.000
37.00
-0.65
-0.52
SW
50.0
46.0
43.0
3.51
0.413
46.33
0.96
1.10
sx
43.0
43.0
48.0
2.89
0.295
44.67
0.68
0.81
sz
36.0
35.0
37.0
1.00
0.118
36.00
-0.83
-0.69
T
33.0
32.0
33.0
0.58
0.059
32.67
-1.40
-1.27
TA
•
TD
27.0
28.0
24.0
2.08
0.236
26.33
-2.50
-2.37
TE
21.0
22.0
20.0
1.00
0.118
21.00
-3.42
-3.29
TG
36.0
30.0
34.0
3.06
0.354
33.33
-1.29
-1.15
TH
29.0
33.0
33.0
2.31
0.236
31.67
-1.58
-1.44
TI
52.0
49.0
50.0
1.53
0.177
50.33
1.66
1.79
TK
•
TL
#-
TM
TN
44.0
39.0
40.0
2.65
0.295
41.00
0.04
0.17
TP
TQ
41.0
35.0
34.0
3.79
0.413
36.67
-0.71
-0.58
TS
32.0
32.0
33.0
0.58
0.059
32.33
-1.46
-1.33
TV
-
TY
43.0
40.0
42.0
1.53
0.177
41.67
0.16
0.29
U
28.0
33.0
29.0
2.65
0.295
30.00
-1.86
-1.73
UA
667;0
666.0
669.0,
1.63
0.177
667.33
108.62
108.68
X
UB
•
UC
UE
34.0
38.0
37.0
2.08
0.236
36.33
-0.77
-0.64
UG
72.0
73.0
76.0
1.53
0177
73^33
5.64,
5;77
X"
UK
r'-
UN
31.0
33.0
32.0
1.00
0.118
32.00
-1.52
-1.39
UP
39.0
39.0
43.0
2.31
0.236
40.33
-0.08
0.06
UQ
47.0
49.0
44.0
2.52
0.295
46.67
1.02
1.15
UW
32.0
33.0
32.0
0.58
0.059
32.33
-1.46
-1 33
UY
•
VA
vc
VG
40.0
40.0
42.0
1.15
0.118
40.67
-0.02
0.12
W
47.0
51.0
43.0
4.00
0.473
47.00
1.08
1.21
WA
•
X
38.0
40.0
36.0
2.00
0.236
38.00
-0.48
-0.35
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
10.33
X
HH
26.33
TD
28.67
SI
21.00
U
TE
27.33
M
30.00
U
24.67
DD
28.00
FZ
30.00
IE
• = No data submitted
TAG SYMBOLS
IT
=a Above control limit
0 = Insufficient data
x = Determined to be an outlier
s Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993 9 / 34
Gross Alpha
Data sorted by Laboratory Averaj
fe
Average Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
30.33
PA
37.67
SS
42.00
RZ
30.67
I
37.67
RD
42.00
NA
30.67
GQ
38.00
X
42.00
AP
30.67
CP
38.00
O
42.33
NG
31.00
FJ
38.00
NO
42.33
DZ
31.00
EV
38.00
KE
42.67
CQ
31.33
SO
38.00
AE
42.67
BH
31.67
TH
38.33
CO
42.67
AF
31.67
SM
38.33
CE
43.00
PC
31.67
QZ
38.33
AA
43.00
NJ
31.67
Q
38.67
sc
43.00
JS
31.67
AK
38.67
PQ
43.33
NT
32.00
UN
38.67
OS
43.67
FF
32.00
RG
38.67
CG
44.00
SR
32.00
PB
39.00
JE
44.00
KZ
32.00
DT
39.00
CS
44.00
JQ
32.33
UW
39.00
BA
44.00
AR
32.33
TS
39.33
DB
44.33
BK
32.33
RV
39.67
S
44.67
SX
32.33
RF
39.67
PT
44.67
LL
32.33
C
39.67
L
45.00
LF
32.67
T
39.67
FN
45.33
EO
33.00
GZ
39.67
CJ
45.33
BS
33.33
TG
39.67
CA
46.00
P
33.33
QX
40.00
LR
46.33
SW
33.67
QW
40.00
HP
46.67
UQ
33.67
JY
40.00
E
46.67
QC
34.00
OX
40.00
CX
47.00
W
34.67
EB
40.33
UP
47.33
RM
35.33
AW
40.33
RJ
47.67
PV
35.67
QP
40.33
J
48.00
JG
35.67
PG
40.33
CK
48.00
DE
35.67
AO
40.33
BM
48.67
PM
36.00
SZ
40.67
VG
48.67
EH
36.33
UE
40.67
MQ
49.00
NH
36.67
TQ
40.67
D
49.00
A
37.00
ST
41.00
TN
50.00
HK
37.00
ID
41.00
SD
50.33
TI
37.33
PR
41.00
FU
51.33
RE
37.33
MS
41.33
K
51.33
HU
37.33
IC
41.67
TY
51.33
HN
37.33
BC
41.67
QJ
52.00
AU
37.33
AZ
41.67
BO
53.33
RK
37.33
AL
42.00
SF
53.33
QQ
• = No data submitted
TAG SYMBOLS
ir
a Above control limit
[05 Insufficient data
x = Determined to be an outlier
a Below control limit
'J
-------
10/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
53.67
OY
58.00
ft
HL
67.00
ft
KT
53.67
FE
58.00
IT
BN
73.33
X
UG
54.67
KX
60.00
ft
JN
74.00
X
LG
55.00
LT
60.67
IT
MV
81.67
X
HI
55.33
SL
63.00
ft
QT
478.67
X
GT
57.67
IT
QU
67.00
ft
OF
667.33
X
UA
% responding Iaba
Frequency distribution
10-
.iLfllli
ii
ll yiw
-6
% responding laba
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-
T-
-6
ill.illHli
-i i - "T .
-4 -2 0+2+4
Normalized deviation of the mean from the grand average
+6
a
• 5 No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It s Above control limit
JJ. s Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
11/34
Radium-226 Statistical Summary 219 Participants
The known value of this nuclide is 9.9 pCi/1 with an expected precision of 1.5; the control limits
are 7.3 to 12.5; the warning regions are 7.3 to 8.2 and 11.6 to 12.5
106(48.4 %) Failed to respond
10(4.6 %) Outliers
12(5.5 %) Out of control
but not an outlier
Statistic
. 81 (37.0 %) Within all limits
Respondents
10(4.6 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
11.42
7.26
52.69
63.55
15.38
0.21
10.10
2.02
0.03
Grand Avg 9.90
1.67
2.77
16.83
-0.03
0.00
10.00
1.01
0.06
22(19.5 %) More than 3 norm. S.D. •
12(10.6 %) Between 2 and 3 norm. S.D.*
. 59(52.2 %) Within 1 norm. S.D.
%
of Known value
20(17.7 %) Between 1 and 2 norm. S.D.
-------
C(
12/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Radium-226
"N
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
10.7
10.2
10.0
0.36
0.276
10.30
0.46
0.46
AA
-•
AE
10.5
9.9
10.5
0.35
0.236
10.30
0.46
0.46
AF
9.8
9.6
9.7
0.10
0.079
9.70
-0.23
-0.23
AI
•
AJ
•
AK
8.5
8.7
7.9
0.42
0.315
8.37
•1.77
-1.77
AL
8.8
8.9
10.2
0.78
0.551
9.30
-0.69
-0.69
AO
•
AP
10.0
104
10.2
0.20
0.158
10.20
0.35
0.35
AR
•
AU
•
AW
10.0
9.8
8.6
0.76
0.551
9.47
-0.50
-0.50
AZ
9.8
11.2
9.7
0.84
0.591
10.23
0.39
0.38
BA
10.5
11.3
9.7
0.80
0.630
10.50
0.70
0.69
BC
10.8
10.6
10.6
0.12
0.079
10.67
0.89
0.89
BG
"¦m -
BH
9.4
9.8
9.3
0.26
0.197
9.50
-0.46
-0.46
BK
10.1
9.9
9.6
0.25
0.197
9.87
-0.04
-0.04
BL
BM
8.6
8.0
7.9
0.38
0.276
8.17
-2.00
-2.00
BN
10.6
9.1
9.1
0.87
0.591
9.60
-0.34
-0.35
BO
9.8
10.1
iO-1
0.17
0.118
10.00
0.12
0.12
BS
•
BW
•
C
9.0
9.2
10.2
0.64
0.473
9.47
-0.50
-0.50
CA
10.1
10.8
11.0
0.47
0.354
10.63
0.85
0.85
CE
10.0
8.9
9.4
0.55
0.433
9.43
-0.54
-0.54
CG
9.9
9.2
11.3
1.07
0.827
10.13
0.27
0.27
CJ
9.5
9.8
11.0
0.79
0.591
10.10
0.23
0.23
CK
7.4
6.7
8.0
0.65
0.512
7.37
-2.92
-2.93
CM
CO
CP
. %>,
CQ
CS
10.9
11.5
10.5
0.50
0.394
10.97
1.23
1.23
cx
•
D
•
DB
11.2
9.7
10.6
0.75
0.591
10.50
0.70
0.69
DD
•
DE
10.9
11.0
11.0
0.06
0.039
10.97
1.23
1.23
DG
•
DJ
•
DL
m-
DM
•
• =
No data submitted
TAG SYMBOLS
IT 3 Above control limit
[0-
Insufficient data
X s
Determined to be an outlier
Ji 3 Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
13/34
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DO
#
DS
•
DT
11.3
10.3
8.8
1.26
0.984
10.13
0.27
0.27
DZ
10.0
11.1
10.8
0.57
0.433
10.63
0.85
0.85
E
9.7
9.8
10.1
0.21
0.158
9.87
-0.04
-0.04
EB
8.4
8.5
8.8
0.21
0.158
8.57
-1.54
-1.54
EH
•
EL
•
EO
9.6
9.6
9.8
0.12
0.079
9.67
-0.27
-0.27
ER
•
EV
•
EX
FE
9.6
10.5
10.1
0.45
0.354
10.07
0.20
0.19
FF
•
FJ
FL
*
FN
10.7
10.7
10.6
0.06
0.039
10.67
0.89
0.89
FU
•
FZ
5.4
3.9
4.4
0.76
0.591
4.57
-6.16
-6.16 U
GE
GI
•
GQ
9.0
9.8
9.4
0.40
0.315
9.40
-0.57
-0.58
GT
•
GZ
HH
•
HI
HK
9.8
10.8
9.9
0.55
0.394
10.17
0.31
0.31
HL
8.7
7.0
51
1.80
1.795
6.93
-3.42
-3.43
HN
•
HP
li.B
13.Z
13.6
0.95
0.709
12.87
3.43
3.43 IT
HU
9.7
9.4
9.6
0.15
0.118
9.57
-0.38
-0.38
HX
I
9.0
9.0
9.5
0.29
0.197
9.17
-0.84
-0.85
IA
•
IC
•
ED
13.4
12.6
13.2
0.42
0.315
1307
3.66
3.66 ft
IE
•
n
•
IU
•
J
10.5
11.0
9.9
0.55
0.433
10.47
0.66
0.65
JE
10.5
12.2
11.2
0.85
0.669
11.30
1.62
1.62
JG
10.0
113
13.7
1.88
1.870
11.67
2.04
2.04
JH
JN
10.8
8.8
11.0
1.22
0.866
10.20
0.35
0.35
JQ
•-
• =
No data submitted
TAG SYMBOLS
It 3 Above control limit
I 0 s Insufficient data x = Determined to be an outlier U 3 Below control limit
-------
(c~ —
14/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Radium-226
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average'
(grand-avg)
(known) Tag
JS
7.3
8.6
6.1
1.25
0.984
7.33
-2.96
-2.96
JX
10.8
10.4
10.3
0.26
0.197
10.50
0.70
0.69
JY
18.7
11.2
12.8
3.95
4.721
14.23
5.01
5.00
ft
K
10.4
10.9
10.3
0.32
0.236
10.53
0.73
0.73
KE
- •
KF
•
KT
• |
KX
• ,
KZ
9.8
9.3
9.7
0.26
0.197
9.60
-0.34
-0.35
L
9.4
9.2
9.6
0.20
0.158
9.40
-0.57
-0.58
LA
•
LB
•
LP
LG
•
LL
•
LM
• '
LB
36.0
102.0
54,0
34;12
48699
64.00
62.47
62.47,
X
LT
9.3
9.4
8.4
0.55
0.394
9.03
-1.00
-1.00
M
13.2
12.0
14.4
1.20
0.945
13.20
3.81
3.81
ft
MA
MN
•
MO
MP
MQ
MS
12.7
14.9
11.6
1.68
1.570
13.07
3.66
3.66
ft
MV
•
MY
'm-
N
••
NA
~
NG
16.5
16.3
16.1
0,20
0.168
16.30
7.39
7.39
X
NH
10.2
9.5
9.4
0.44
0.315
9.70
-0.23
-0.23
NJ
NK
NO
9.8
10.2
10.5
0.35
0.276
10.17
0.31
0.31
NT
10.6
10.8
11.0
0.20
0.158
10.80
1.04
1.04
O
•
OF
8.4
8.8
9.4
0.50
0.394
8.87
-1.19
-1.19
OS
•
OX
10.0
10.1
10.0
0.06
0.039
10.03
0.16
0.15
OY
11.3
11.6
11.6
0.17
0.118
11.50
1.85
1.85
OZ
•
P
10.2
9.8
8.4
0.95
0.709
9.47
-0.50
-0.50
PA
PB
10.4
10.6
10.3
0.15
0.118
10.43
0.62
0.62
PC
17:4
18it
19.8
1.20
0.945
18.63
1009
10.08
X
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 s
Insufficient data
x =
Determined to be an outlier
s Below control limit
^
V
-------
r-
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993 15 / 34
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PG
8.0
8.4
8.8
0.40
0.315
8.40
-1.73
-1.73
PI
•
PM
9.1
9.8
10.0
0.47
0.354
9.63
-0.30
-0.31
PP
0
PQ
0
PR
•
PT
13.6
12.9
13.3
0.35
0.276
13.27
3.89
3.89
IT
PV
13.6
11.8
11.2
1.25
0.945
12.20
2.66
2.66
PW
8.2
8.5
8.3
0.15
0.118
8.33
-1.81
-1.81
PY
•
Q
12.7
10.8
11.8
0.95
0.748
11.77
2.16
2.16
QC
0-
QJ
0
QK
0
QL
• '
QP
0
QQ
0 ¦
QT
4.9
4.8
5.0
0.10
0.079
4.90
-5.77
-5.77
V
QU
11.4
13.3
11.6
1.04
0.748
12.10
2.54
2.54
QW
0'
QX
5.6
5.8
5.9
0.15
0.118
5.77
-4.77
-4.77
u
QZ
12.6
9.1
9.7
1.87
1.720
10.47
0.66
0.65
RC
0-
RD
8.8
8.5
8.3
0.25
0.197
8.53
-1.58
-1.58
RE
0
RF
19.1
17.8
17.8
0.75
0.512
18.23
9.63
9.62
X
RG
11.0
14.0
13.0
1.53
1.345
12.67
3.20
3.19
tr
RJ
16.0
16.1
18:4
1.36c
0.945
16.83
8.01
8.01
X
RK
65.7
63.5
45.1
11.31
14.546
58.ia
55.66
>5.66
X
RL
RM
9.8
9.1
9.7
0.38
0.276
9.53
-0.42
-0.42
RP
~
RR
•
RT
~
RV
22.3
19.6
22:2
1.53
1.120
21.37
13.24
13.24
X
RZ
8.4
8.0
8.6
0.31
0.236
8.33
-1.81
-1.81
S
11.1
9.5
10.5
0.81
0.630
10.37
0.54
0.54
sc
9.7
9.9
9.8
0.10
0.079
9.80
-0.11
-0.12
SD
11.4
11.3
11.3
0.06
0.039
11.33
1.66
1.66
SF
9.4
10.2
10.0
0.42
0.315
9.87
-0.04
-0.04
SI
11.5
9.4
11.5
1.21
0.827
10.80
1.04
1.04
SL
•
SM
9.0
8.4
8.2
0.42
0.315
8.53
-1.58
-1.58
SO
*
SR
0 ¦
• =
l0-
No data submitted
Insufficient data
x ~
TAG SYMBOLS
Determined to be an outlier
ft 3 Above control limit
11 = Below control limit
-------
16/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SS
9.7
10.3
12.2
1.31
0.984
10.73
0.97
0.96
ST
9.6
9.8
9.7
0.10
0.079
9.70
-0.23
-0.23
sw
10.2
12.4
7.4
2.51
2.846
10.00
0.12
0.12
sx
9.7
11.8
8.5
1.67
1.570
10.00
0.12
0.12
sz
8.9
8.5
8.8
0.21
0.158
8.73
-1.34
-1.35
T
9.9
10.1
9.8
0.15
0.118
9.93
0.04
0.04
TA
10.5
10.9
9.6
0.67
0.512
10.33
0.50
0.50
TD
13.1
15.6
8.0
3.87
4.796
12.23
2.70
2.69
TE
•
TG
8.9
C7.*±
tr.o
u.oz
U.ZiJO
y.27
-0.73
-0.73
TH
11.6
11.1
12.3
0.60
0.473
11.67
2.04
2.04
TI
8.3
7.7
7.9
0.31
0.236
7.97
-2.23
-2.23
TK
16;0
20.1
22.3,
3.20
3.821
19.47
11;0#
11.05
X
TL
1.7
5.7
6.5
2.57
2.695
4.63
-6.08
-6.08
TM
• ¦.
TN
8.1
8.4
7.2
0.62
0.473
7.90
-2.31
-2.31
TP
•
TQ
9.2
8.5
10.9
1.23
0.945
9.53
-0.42
-0.42
TS
19.2
19.4
19.4
0:12
0.079
19.33
10.90
10.89
X
TV
• •
TY
•
U
7.7
9.3
8.5
0.80
0.630
8.50
-1.61
-1.62
UA
•
UB
•
UC
•
UE
9.3
9.8
10.1
0.40
0.315
9.73
-0.19
-0.19
UG
•
UK
• -
UN
8.4
7.9
8.2
0.25
0.197
8.17
-2.00
-2.00
UP
11.0
11.6
11.8
0.42
0.315
11.47
1.81
1.81
UQ
9.2
8.8
10.0
0.61
0.473
9.33
-0.65
-0.65
UW
9.3
9.0
10.4
0.74
0.551
9.57
-0.38
-0.38
UY
•
VA
•
VC
•
VG
16.9
20 8
19.5
1.99
2.020
19.07
10.59
10.58
X
W
10.3
10.2
10.4
0.10
0.079
10.30
0.46
0.46
WA
9.0
9.6
9.3
0.30
0.236
9.30
-0.69
-0.69
X
10.4
11.8
11.6
0.76
0.551
11.27
1.58
1.58
Average
Tag_
Data sorted by Laboratory Average
Lab Average Tag Lab Average
Tag
Lab
4.57
4.63
4.90
u
u
u
FZ
TL
QT
5.77
6.93
7.33
u
QX
HL
JS
7.37
7.90
7.97
CK
TN
TI
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It s Above control limit
11 s Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Radium-226
17/34
Data sorted by
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
8.17
UN
9.70
NH
10.67
FN
8.17
BM
9.70
AF
10.67
BC
8.33
RZ
9.73
UE
10.73
SS
8.33
PW
9.80
sc
10.80
SI
8.37
AK
9.87
SF
10.80
NT
8.40
PG
9.87
E
10.97
DE
8.50
U
9.87
BK
10.97
CS
8.53
SM
9.93
T
11.27
X
8.53
RD
10.00
SX
11.30
JE
8.57
EB
10.00
sw
11.33
SD
8.73
SZ
10.00
BO
11.47
UP
8.87
OF
10.03
OX
11.50
OY
9.03
LT
10.07
FE
11.67
TH
9.17
I
10.10
CJ
11.67
JG
9.27
TG
10.13
CG
11.77
Q
9.30
WA
10.13
DT
12.10
QU
9.30
AL
10.17
NO
12.20
PV
9.33
UQ
10.17
HK
12.23
TD
9.40
L
10.20
JN
12.67
ft
RG
9.40
GQ
10.20
AP
12.87
ft
HP
9.43
CE
10.23
AZ
13.07
ft
MS
9.47
P
10.30
W
13.07
ft
ID
9.47
C
10.30
AE
13.20
ft
M
9.47
AW
10.30
A
13.27
ft
PT
9.50
BR
10.33
TA
14.23
ft
JY
9.53
TQ
10.37
S
16.30
X
NG
9.53
KM
10.43
PB
16.83
X
RJ
9.57
UW
10.47
J
18.23
X
RF
9.57
HU
10.47
QZ
18.63
X
PC
9.60
KZ
10.50
JX
19.07
X
VG
9.60
BN
10.50
DB
19.33
X
TS
9.63
PM
10.50
BA
19.47
X
TK
9.67
EO
10.53
K
21.37
X
RV
9.70
ST
10.63
DZ
58.10
. X
RK
10.63
CA
64.00
X
LR
% responding labs
Frequency distribution
10-
-6
T"
liiiiiiif« mt- *.—¦¦,
-2 0 +2 +4
Normalized deviation of the mean from the known value
~T"
+6
• s No data submitted TAG SYMBOLS II s Above control limit
0 = Insufficient data x a Determined to be an outlier -11 = Below control limit
^ —
-------
18/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Radium-226
% responding labs Frequency distribution
10-
tm-||| JlliT
-2 0+2 +
-6 -4 -2 6 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
19/34
Radium-228 Statistical Summary 219 Participants
The known value of this nuclide is 12.5 pCi/1 with an expected precision of 3.1; the control limits
are 7.1 to 17.9; the warning regions are 7.1 to 8.9 and 16.1 to 17.9
114(52.1 %) Failed to respond
7(3.2 %) Outliers
4(1.8 %) Out of control
but not an outlier
Statistic
, 86(39.3 %) Within all limits
Respondents
8(3.7 %) tn 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
12.73
3.51
12.31
27.56
1.83
0.07
12.60
0.80
0.03
Grand Avg 12.81
2.15
4.63
16.79
2.50
0.15
12.60
0.80
0.05
11 (10.5 %) More than 3 norm. S.D. •
8(7.6 %) Between 2 and 3 norm. S.D
70(66.7 %) Within 1 norm. S.D.
of known value
* 16(15.2 %) Between 1 and 2 norm. S.D.
-------
((
20/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
^
Radium-228
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
13.9
15.3
15.7
0.95
0.343
14.97
1.20
1.38
AA
•
AE
11.5
11.6
11.4
0.10
0.038
11.50
-0.73
-0.56
AF
13.7
13.5
13.8
0.15
0.057
13.67
0.48
0.65
AI
•
AJ
•
AK
12.3
12.2
11.9
0.21
0.076
12.13
-0.38
-0.20
AL
14.2
13.2
13.7
0.50
0.191
13.70
0.50
0.67
AO
•
AP
10.7
12.9
10.9
1.22
0.419
11.50
-0.73
-0.56
AR
•
AU
•
AW
12.8
12.7
12.7
0.06
0.019
12.73
-0.04
0.13
AZ
11.0
11.5
12.7
0.87
0.324
11.73
-0.60
-0.43
BA
12.0
11.5
12.5
0.50
0.191
12.00
-0.45
-0.28
BC
15.3
17.1
16.2
0.90
0.343
16.20
1.89
2.07
BG
•
BH
12.6
12.3
12.9
0.30
0.114
12.60
-0.12
0.06
BK
9.9
9.2
12.0
1.46
0.534
10.37
-1.37
-1.19
BL
• '
BM
.13.2
12.5
13.0
0.36
0.133
12.90
0.05
0.22
BN
• '
BO
10.5
12.3
11.1
0.92
0.343
11.30
-0.85
•0.67
BS
•
BW
•
C
13.4
13.0
13.2
0.20
0.076
13.20
0.22
0.39
CA
14.9
12.4
12.2
1.50
0.514
13.17
0.20
0.37
CE
13.6
12.1
13.4
0.81
0.286
13.03
0.12
0.30
CG
11.6
10.6
11.1
0.50
0.191
11.10
-0.96
-0.78
CJ
14.0
16.0
14.0
1.15
0.381
14.67
1.04
1.21
CK
10.9
10.9
12.5
0.92
0.305
11.43
-0.77
-0.60
CM
•
CO
•
CP
•
CQ
•
CS
12.6
132
12.6
0.35
0.114
12.80
-0.01
0.17
CX
D
•
DB
14.7
11.8
13.4
1.45
0.553
13.30
0.27
0.45
DD
•
DE
11.8
11.7
11.6
0.10
0.038
11.70
-0.62
-0.45
DG
•
DJ
DL
DM
•
• =
No data submitted
TAG SYMBOLS
IT 3 Above control limit
1 0 a
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
^
V
-------
(,
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
^
21/34
Radium-228
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
DS
•
DT
9.9
9.4
13.1
2.01
0.705
10.80
-1.12
-0.95
DZ
11.8
11.3
10.5
0.66
0.248
11.20
-0.90
-0.73
E
•
EB
11.7
14.3
14.1
1.45
0.495
13.37
0.31
0.48
EH
•
EL
•
EO
11.8
12 2
10.5
0.89
0.324
11.50
-0.73
-0.56
EB
EV
•
EX'--
FE
FP'
•
FJ
•
Fli
' Y
FN
12.6
12.8
13.7
0.59
0.210
13.03
0.12
0.30
FU
"
•
FZ
4.4
2.4
5.3
1.48
0:563
4.03
-4.91
-4*733 x
GE
Gt
GQ
15.5
16.0
16.5
0.50
0.191
16.00
1.78
1.96
GT
GZ
HH
•
m
HK
12.3
11.4
11.2
0.59
0.210
11.63
-0.66
-0.48
HL
130
12.1
11.1
0.95
0.362
12.07
-0.42
-0.24
BN
HP
iz.t>
13.7
10.6
1.57
0.591
12.30
-0.29
-0.11
HU
•
HX»
I
8.0
6.5
7.7
0.79
0.286
7.40
-3.02
-2.85
IA
IC
•
m
18.3
17.9
16.2
1.12
0.400
17.47
2.60
2.78
IE
n
IU
•
j
14.5
13.3
12.4
1.05
0.400
13.40
0.33
0.50
JE
5.8
9.3
8.7
1.87
0.667
7.93
-2.73
-2.55
JG
13.4
12.8
11.6
0.92
0.343
12.60
-0.12
0.06
JH
• -
JN
•
J
• =
No data submitted
TAG SYMBOLS
ft a Above control limit
0 a
^
Insufficient data
x =
Determined to be an outlier
U a Below control limit
y
-------
ft
22/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Radium-228
s
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-a vg)
(known) Tag
JS
15.0
15.0
15.0
0.00
0.000
15.00
1.22
1.40
JX
10.3
11.5
14.2
2.00
0.743
12.00
-0.45
-0.28
JY
14.0
15.1
12.9
1.10
0.419
14.00
0.66
0.84
K
11.7
12.4
11.7
0.40
0.133
11.93
-0.49
-0.32
KE
•
KF
•
KT
•
KX
9 -
KZ
19.3
19.3
19.3
0.01
0.000
19.30
3.62
3.80
IT
L
13.8
14.8
13.3
0.76
0.286
13.97
0.64
0.82
LA
•
LE
*
LF
•
LG
9
LL
9 ¦
LM
•
LB
- • '
LT
16.7
16.7
16.7
0.00
0.000
16.70
2.17
2.35
M
13.1
13.3
12.7
0.31
0.114
13.03
0.12
0.30
MA
•
MN
•
MO
MP
MQ
•
MS
14.2
11.2
10.5
1.97
0.705
11.97
-0.47
-0.30
MV
MY
•
N
•
NA
•
NG
'5.0
14.5
11.6
1.84
0.648
13.70
0.50
0.67
NH
1.0
1.3
L0
0.1?
0.057
1.10
6.64
-6.37
NtT
' *
NH
* ¦
NO
11.6
12.5
11.6
0.52
0.171
11.90
-0.51
-0.34
NT
14.4
13.7
15.0
0.65
0.248
14.37
0.87
1.04
O
•
OF
12.4
14.4
14.5.
1.18
0.400
13.77
0.53
0.71
OS
ft
OX
12.6
12.6
12.6
0.00
0.000
12.60
-0.12
0.06
OY
11.9
13.4
12.5
0.75
0.286
12.60
-0.12
0.06
OZ
•
P
15.3
10.4
12.9
2.45
0.934
12.87
0.03
0.20
PA
•
PB
12.8
12.5
12.7
0.15
0.057
12.67
-0.08
0.09
PC
10.0
11.3
12.2
1.11
0.419
11.17
-0.92
-0.74
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
10.
Insufficient data
X S
Determined to be an outlier
11 = Below control limit
—
-------
I " ^
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993 23 / 34
Radium-228
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PG
PI
•
PM
14.0
16.0
15.0
1.00
0.381
15.00
1.22
1.40
PP
•
PQ
PR
•
PT
12.5
12.1
11.0
0.78
0.286
11.87
-0.53
-0.35
PV
7.4
7.1
7.7
0.30
0.114
7.40
-3.02
-2.85
PW
10.5
11.9
11.5
0.72
0.267
11.30
-0.85
-0.67
PY
•
Q
12.7
11.3
12.3
0.72
0.267
12.10
-0.40
-0.22
QC
•
QJ
•
QK
•
QL
•
QP
•
qq
•
QT
13.3
12.7
12.0
0.65
0.248
12.67
-0.08
0.09
QU
11.7
12.4
11.2
0.60
0.229
11.77
-0.58
-0.41
QW
13.9
11.9
14.3
1.29
0.457
13.37
0.31
0.48
QX
28.4
21.6
25.0
3.45
1,599
249*
6.79
6.97 x
QZ
11.8
13.0
12.4
0.60
0.229
12.40
-0.23
-0.06
RC
«
RD
12.3
10.5
17.6
3.69
1.672
1347
0.37
0.54
RE
RF
13.9
12.1
12.7
0.92
0.343
12.90
0.05
0.22
RG
24.0
13.0
17.0
5.57
3.087
18.00
2.90
3.07 ft
RJ
12.8
11.9
12.2
0.46
0.171
12.30
-0.29
-0.11
RK
0.6
0.6
0,6
0.00
0.000
0.60
-6.82
6166 X
RL
•
RM
17.8
10.5
14.5
3.66
1.745
14.27
0.81
0.99
RP
•
RR
RT
•<
RV
•
RZ
11.8
12.3
11.6
0.36
0.133
11.90
-0.51
-0.34
S
11.5
10.7
11.9
0.61
0.229
11.37
-0.81
-0.63
SC
9.6
9.8
9.5
0.15
0.057
9.63
-1.78
-1.60
SD
19.6
17.2
18.4
1.20
0.457
18.40
3.12
3.30 IT
SF
15.8
13.6
14.4
1.11
0.419
14.60
1.00
1.17
SI
9.6
9.9
10.6
0.51
0.191
10.03
-1.55
-1.38
SL
•
SM
13.1
10.5
8.6
2.26
0.857
10.73
-1.16
-0.99
SO
•
SB
• s No data submitted TAG SYMBOLS ft 3 Above control limit
0 = Insufficient data x = Determined to be an outlier li s Below control limit
-------
24/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Radium-228
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
11.5
16.1
15.8
2.57
0.876
14.47
0.92
1.10
ST
24.8
25.8
24.0
0.90
0.343
24.87
6.73
6.91
X
9W
24.2
22.3
19.5
2.36
0.896
22.00
5,13
5.31
X
sx
11.5
12.5
11.8
0.51
0.191
11.93
-0.49
-0.32
sz
10.0
11.0
12.0
1.00
0.381
11.00
-1.01
-0.84
T
12.7
12.2
12.6
0.26
0.095
12.50
-0.17
0.00
TA
18.7
15.0
13.0
2.89
1.164
15.57
1.54
1.71
TD
0.3
3;4
6.1
2.90
1.200
3.27
-6.33
-5.16
X
TE
9
TG
11.1
10.8
11.9
0.57
0.210
11.27
-0.86
-0.69
TH
13.5
12.4
12.1
0.74
0.267
12.67
-0.08
0.09
TT
11.7
15.1
13.9
1.72
0.648
13.57
0.42
0.60
TK
15.2
16.7
17.3
1.08
0.400
16.40
2.00
2.18
TL
9
TM
9
TN
12.2
16.4
181
3.04
1.237
15.57
1.54
1.71
TP
•
TQ
12.7
14.7
14.4
1.08
0.381
13.93
0.63
0.80
TS
H.8
11.8
11.7
0.06
0.019
11.77
-0.58
-0.41
TV
•
TY
*
U
13.0
11.9
18.8
3.71
1.599
14.57
0.98
1.15
UA
•
UB
•
UC
*
UE
12.3
12.1
10.8
0.81
0.286
11.73
-0.60
-0.43
UG
9
UK
UN
8.6
9.2
8.5
0.38
0.133
8.77
-2.26
-2.09
UP
12.0
13.5
16.1
2.07
0.781
13.87
0.59
0.76
UQ
9.7
11.0
10;0
0.68
0.248
10.23
-1.44
-1.27
uw
12.9
11.2
12.5
0.89
0.324
12.20
-0.34
-0.17
UY
•
VA
9
VC
•
VG
11.8
13.2
11.9
0.78
0.267
12.30
-0.29
-0.11
W
11.1
9.6
10.2
0.75
0.286
10.30
-1.40
-1.23
WA
12.1
11.1
10.9
0.64
0.229
11.37
-0.81
-0.63
X
19.3
16.7
18.8
1.38
0.495
18.27
3.05
3.22
It
1
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
0.60
X
RK
4.03 x
FZ
7.93
JG
1.10
X
NH
7.40
PV
8.77
UN
3.27
X
TD
7.40
1
9.63
sc
• s No data submitted
TAG SYMBOLS
IT
s Above control limit
0 = Insufficient data
x = Determined to be an outlier
= Below control limit
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
25/34
Radium-228
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
10.03
SI
12.00
BA
13.57
ti
10.23
UQ
12.07
HL
13.67
AF
10.30
W
12.10
Q
13.70
AL
10.37
BK
12.13
AK
13.70
NG
10.73
SM
12.20
UW
13.77
OF
10.80
DT
12.30
VG
13.87
UP
11.00
SZ
12.30
RJ
13.93
TQ
11.10
CG
12.30
HP
13.97
L
11.17
PC
12.40
QZ
14.00
JY
11.20
DZ
12.50
T
14.27
RM
11.27
TG
12.60
OY
14.37
NT
11.30
PW
12.60
JG
14.47
SS
11.30
BO
12.60
BH
14.57
u
11.37
S
12.60
OX
14.60
SF
11.37
WA
12.67
TH
14.67
CJ
11.43
CK
12.67
QT
14.97
A
11.50
EO
12.67
PB
15.00
PM
11.50
AP
12.73
AW
15.00
JS
11.50
AE
12.80
CS
15.57
TN
11.63
HK
12.87
P
15.57
TA
11.70
DE
12.90
RF
16.00
GQ
11.73
UE
12.90
BM
16.20
BC
11.73
AZ
13.03
M
16.40
TK
11.77
TS
13.03
FN
16.70
LT
11.77
QU
13.03
CE
17.47
ID
11.87
PT
13.17
CA
18.00
1t
RG
11.90
RZ
13.20
C
18.27
It
X
11.90
NO
13.30
DB
18.40
It
SD
11.93
sx
13.37
QW
19.30
IT
KZ
11.93
K
13.37
EB
22.00
X
SW
11.97
MS
13.40
J
24.87
X
ST
12.00
JX
13.47
RD
24.97
X
QX
% responding labs
Frequency distribution
10-
0-iS-r
"f-- —
-6
-2 0 +2
Normalized deviation of the mean from the known value
+4
+6
• = No data submitted
[0a Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
It
Above control limit
Below control limit
J
-------
26/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Radium-228
% responding labs Frequency distribution
JIlllili
Mm
*4. -2 6 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
27/34
Uranium (Natural) Statistical Summary 219 Participants
The known value of this nuclide is 15.1 pCi/1 with an expected precision of 3.0; the control limits
are 9.9 to 20.3; the warning regions are 9.9 to 11.6 and 18.6 to 20.3
Statistic Respondents Non-outliers
Mean
14.46
Grand Avg 14.38
Std. Dev.
3.14
2.63
Variance
9.83
6.91
% Coef. of Var.
21.68
18.29
% deviation of mean from known value
-4.22
-4.80
Norm. dev. of mean from known value
-0.20
-0.28
Median
14.82
14.80
% deviation of median from known value
-1.88
-1.99
Norm. dev. of median from known value
-0.09
-0.11
-------
c
28/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
^
Uranium (Natural)
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
15.7
15.5
16.2
0.36
0.138
15.80
0.82
0.40
AA
16.0
16.0
14.0
1.15
0.394
15.33
0.55
0.13
AE
16.1
20.1
19.7
2.20
0.788
18.63
2.46
2.04
AF
8.1
8.4
7.9
0.25
0.098
8.13
-3.60
-4.02
AI
•
AJ
•
AK
15.9
15.2
14.7
0.60
0.236
15.27
0.51
0.10
AL
15.9
14.4
16.2
0.96
0.354
15.50
0.65
0.23
AO
• ¦
AP
15.8
14.5
15.7
0.72
0.256
15.33
0.55
0.13
AR
•
AU
•
AW
14.5
14.4
14.3
0.10
0.039
14.40
0.01
-0.40
AZ
21.9
21.7
21.5
0.20
0.079
21.70
4.23
3.81
ft
BA
12.4
13.3
13.3
0.52
0.177
13.00
-0.79
-1.21
BC
14.4
14.6
14.8
0.20
0.079
14.60
0.13
-0.29
BG
•
BH
15.4
15.6
15.4
0.12
0.039
15.47
0.63
0.21
BK
17.9
15.4
16.0
1.31
0.492
16.43
1.19
0.77
BL
•-
BM
15.6
15.3
15.5
0.15
0.059
15.47
0.63
0.21
BN
13.7
13.3
13.1
0.31
0.118
13.37
-0.58
-1.00
BO
15.6
16.3
15.3
0.51
0.197
15.73
0.78
0.37
BS
•
BW
• -
C
14.9
15.8
14.1
0.85
0.335
14.93
0.32
-0.10
CA
15.7
15.6
14.6
0.61
0.217
15.30
0.53
0.12
CE
13.5
13.1
12.7
0.40
0.158
13.10
-0.74
-1.15
CG
15.7
14.8
15.1
0.46
0.177
15.20
0.48
0.06
CJ
15.0
15.0
15.0
0.00
0.000
15.00
0.36
-0.06
CK
13.9
14.5
16.4
1.31
0.492
14.93
0.32
-0.10
CM
17.3
15.7
16.2
0.82
0.315
16.40
1.17
0.75
CO
21.9
28.4
24,1
2.25
0.886
24^1 3^
5.63
5.22
X
CP
•
CQ
•
CS
14.8
16.2
14.5
0.91
0.335
15.17
0.46
0.04
cx
14.6
14.7
14.7
0.06
0.020
14.67
0.17
-0.25
D
14.7
14.8
14.9
0.10
0.039
14.80
0.25
-0.17
DB
15.0
15.0
14.0
0.58
0.197
14.67
0.17
-0.25
DD
•
DE
14.6
14.8
14.8
0.12
0.039
14.73
0.21
-0.21
DG
•
DJ
•
DL
•
DM
' •-
• =
No data submitted
TAG SYMBOLS
It = Above control limit
1 0 =
^
Insufficient data
x =
Determined to be an outlier
•li = Below control limit
-------
(?
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
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
15.2
15.6
16.4
0.61
0.236
15.73
0.78
0.37
DS
•
DT
14.6
15.0
14.6
0.23
0.079
14.73
0.21
-0.21
DZ
14.1
14.2
13.9
0.15
0.059
14.07
-0.18
-0.60
E
14.5
13.5
12.8
0.85
0.335
13.60
-0.45
-0.87
EB
16.5
15.5
16.5
0.58
0.197
16.17
1.03
0.62
EH
•
EL
•
EO
EE
«
EV
#
EX
FE
15.0
15.0
15.0
0.00
0.000
15.00
0.36
-0.06
' ff ' - :
FJ
9.2
9.0
9.2
0.12
0.039
9.13
-3.03
-3.44 H
FL
•
. FN
26.9
27.1
24.8
1.27
0.453
26;27
6;87
6.46 x
Ftl
. _ •
FZ
16.1
13.8
14.6
1.17
0.453
14.83
0.26
-0.15
GE
•
<31
•
GQ
15.0
14.7
14.4
0.30
0.118
14.70
0.19
-0.23
dT
•
GZ
•
HH
•
m;
•
HK
17.1
16.4
15.9
0.60
0.236
16.47
1.21
0.79
HL
15.4
14.4
14.0
0.72
0.276
14.60
0.13
-0.29
HN
•
HP
15.2
14.7
16.0
0.66
0.256
15.30
0.53
0.12
HU
23.2
22.6
22.3
0.46
0.177
22.70
4.81
4.39 IT
HX
•
I
12.7
12.7
16.2
2.02
0.689
13.87
-0.29
-0.71
IA
•
IC
•
ED
8.7
8.1
8.4
0.30
0.118
8.40
-3.45
-3.87 U
IE
12.4
13.7
12.5
0.72
0.256
12.87
-0.87
-1.29
n
•
IU
•
J
15.4
15.4
15.3
0.06
0.020
15.37
0.57
0.15
JE
14.6
11.8
14.7
1.65
0.571
13.70
-0.39
-0.81
JG
•
JH
9
JN
13.7
14.3
13.0
0.65
0.256
13.67
-0.41
-0.83
•
• =
No data submitted
TAG SYMBOLS
IT a Above control limit
in
$
Insufficient data
X 3
Determined to be an outlier
U s Below control limit
V
-------
((
30/34
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
—^
r
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
15.0
15.0
15.0
0.00
0.000
15.00
0.36
-0.06
JX
9
JY
13.6
18.4
24.2
5.31
3.071
18.73
2.52
2.10
K
13.2
13.4
13.3
0.10
0.039
13.30
-0.62
-1.04
•
KE
KF
•
KT
8.0
8.6
8.8
0.42
0.158
8.47
-3.41
-3.83 U
KX
KZ
9
L
15.8
18.0
16.4
0.31
0118
16.07
0.98
0.56
LA
•
LE
•'
LF
9
LG
9
LL
9
LM
LB
LT
15.1
15.3
15.2
0.10
0.039
15.20
0.48
0.UG
M
9
MA
•
MN
•
MO
MP
MQ
MS
16.7
16.9
17.2
0.25
0.098
16.93
1.48
1.08
MV
•
MY
•
N
•
NA
15.0
150
15.0
0.00
0.000
15.00
0.36
-0.06
NG
NH
14.5
14.2
13.9
0.30
0.118
14.20
-0.10
-0.52
NJ
15.0
16.0
14.0
1.00
0.394
15.00
0.36
-0.06
NK
15.0
15.4
15.0
0.23
0.079
15.13
0.44
0.02
NO
15.4
16.1
15.0
0.56
0.217
15.50
0.65
0.23
NT
14.1
13.7
14.5
0.40
0.158
14.10
-0.16
-0.58
O
•
OF
12.1
13.5
13.9
0.95
0.354
13.17
-0.70
-1.12
OS
13.0
13.0
13.0
0.00
0.000
13.00
-0.79
-1.21
OX
0
OY
16.0
16.7
16.3
0.35
0.138
16.33
1.13
0.71
OZ
9
P
18.7
20.4
14.2
3.20
1.420
17.77
1.96
1.54
PA
•
PB
15.0
1.4.8
15.3
0.25
0.098
15.03
0.38
-0-04
PC
• =
No data submitted
TAG SYMBOLS
It = Above control limit
0 =
Insufficient data
X H
Determined to be an outlier
U s Below control limit
^
'J
-------
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
31/34
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PG
. •
PI
•
PM
15.0
15.0
15.0
0.00
0.000
15.00
0.36
-0.06
PP
15.5
15.3
15.6
0.15
0.059
15.47
0.63
0.21
PQ
14.9
14.1
14.9
0.46
0.158
14.63
0.15
-0.27
PR
PT
13.4
14.6
14.5
0.67
0.236
14.17
-0.12
-0.54
PV
19.5
18.6
20.8
1.11
0.433
19.63
3.04
2.62
PW
9.0
11.9
12.6
1.91
0.709
11.17
-1.85
-2.27
PY
•
Q
13.1
10.0
7.3
2.90
1.270
10.13
-2.45
-2.87
QC
QJ
9.7
9.7
9.7
0.00
0.000
9.70
-2.70
-3.12
I
QK
QL
•
QP
, V
QQ
12.5
14.1
13.7
0.83
0.315
13.43
-0.54
-0.96
QT
QU
9.5
11.8
10.0
1.21
0.453
10.43
-2.28
-2.69
QW
m
3,0
3il
as
aio
0.039
3.10
-6.51
4m
X
QZ
13.5
12.4
14.0
0.82
0.315
13.30
-0.62
1.04
RC:
• -S'
RD
7.0
6.9
7.0
0.06
0.020
6.97
-4.28
-4.70
u
RE
RF
13.0
13.0
13.0
0.00
0.000
13.00
-0.79
-1.21
RG
16.0
16.0
16.0
0.00
0.000
16.00
0.94
0.52
RJ
15.6
15.3
15.6
0.17
0.059
15.50
0.65
0.23
RK
8.4
8.7
9.4
0.51
0.197
8.83
-3.20
-3.62
u
RL
15.5
15.5
15.5
0.00
0.000
15.50
0.65
0.23
RM
15.9
10.9
14.8
2.63
0.984
13.87
-0.29
-0.71
RP
15.9
15.9
0.00
0.000
15.90
0.88
0.46
RR
w
RT
•
RV
9.6
11.7
11.4
1.14
0.4ia
10.90
-2.01
-2.42
RZ
15.0
14.9
16.2
0.72
0.256
15.37
0.57
0.15
S
13.6
13.6
14.8
0.69
0.236
14.00
-0.22
-0.64
sc
13.5
14.1
14.0
0.32
0.118
13.87
-0.29
-0.71
SD
13.9
14.6
13.5
0.56
0.217
14.00
-0.22
-0.64
SF
15.7
15.7
15.9
0.12
0.039
15.77
0.80
0.38
SI
15.0
14.4
14.2
0.42
0.158
14.53
0.09
-0.33
SL
4.6
8.3
7.6
1.97
0.728
6.83
-4.36
-4.77
SM
13.6
13.2
13.0
0.31
0.118
13.27
-0.64
-1.06
SO
13.8
14.4
14.6
0.42
0.158
14.27
-0.06
-0.48
SB
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft 3 Above control limit
JJ. a Below control limit
-------
^
32/34
>•
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Uranium (Natural)
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
SS
13.9
14.6
15.5
0.80
0.315
14.67
0.17
-0.25
ST
15.0
14.5
15.5
0.50
0.197
15.00
0.36
-0.06
SW
16.7
14.2
14.4
1.39
0.492
15.10
0.42
0.00
sx
16.0
16.0
16.0
0.00
0.000
16.00
0.94
0.52
sz
14.0
14.4
13.6
0.40
0.158
14.00
-0.22
-0.64
T
16.8
17.8
16.7
0.61
0.217
17.10
1.57
1.15
TA
19.1
18.4
19.1
0.40
0.138
18.87
2.59
2.17
TD
7.7
8.6
11.5
1.99
0.748
9.27
-2.95
-3.37
It
TE
•
TG
15.2
15.4
15.5
0.15
0.059
15.37
0.57
0.15
TH
5.5
6.0
6.2
0.36
0.138
5.90
-4.89
-5.31
TI
14.7
15.0
14.6
0.21
0.079
14.77
0.23
-0.19
TK
•
TL
•
TM
- 9 ¦
TN
. •
TP
15.2
15.3
15.2
0.06
0.020
15.23
0.50
0.08
TQ
17.5
16.6
17.2
0.46
0.177
17.10
1.57
1.15
TS
12.2
12.1
12.4
0.15
0.059
12.23
-1.24
-1.66
TV
•
TY
•
U
9
UA
•
UB
•
UC
•
UE
14.3
14.7
14.2
0.26
0.098
14.40
0.01
-0.40
UG
•-
UK
•
UN
13.0
14.5
13.3
0.79
0.295
13.60
-0.45
-0.87
UP
12.0
13.9
14.0
1.13
0.394
13.30
-0.62
-1.04
UQ
uw
14.0
14.3
14.7
0.35
0.138
14.33
-0.02
-0.44
UY
•
VA
*
VC
9
VG
14.9
14.4
14.5
0.26
0.098
14.60
0.13
-0.29
W
15.5
14.7
14.8.
0.44
0.158
15.00
0.36
-0.06
WA
• "
X
16.7
15.5
15.8
0.62
0.236
16.00
0.94
0.52
Data sorted by Laboratory Averag
',e
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
3.10
X
QX
6.97
U
RD
8.47
KT
5.90
u
TH
8.13
IL
AF
8.83
u
RK
6.83
u
SL
8.40
U
ID
9.13
u
FJ
• = No data submitted
TAG SYMBOLS
tt = Above control limit
0 = Insufficient data
^
X 2
Determined to be an outlier
II ~ Below control limit
-------
C(
— —^
EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
33/34
Uranium (Natural)
Data sorted by Laboratory Averaj
!®
Average
Tag
Lab
Average
Tag
Lab
Average
Tag Lab
9.27
TD
14.40
AW
15.33
AA
9.70
U
QJ
14.53
SI
15.37
TG
10.13
Q
14.60
VG
15.37
J
10.43
QU
14.60
HL
15.37
RZ
10.90
RV
14.60
BC
15.47
PP
11.17
PW
14.63
PQ
15.47
BM
12.23
TS
14.67
ss
15.47
BH
12.87
IE
14.67
DB
15.50
RL
13.00
RF
14.67
CX
15.50
RJ
13.00
OS
14.70
GQ
15.50
NO
13.00
BA
14.73
DT
15.50
AL
13.10
CE
14.73
DE
15.73
DO
13.17
OF
14.77
TI
15.73
BO
13.27
SM
14.80
D
15.77
SF
13.30
UP
14.83
FZ
15.80
A
13.30
QZ
14.93
CK
15.90
RP
13.30
K
14.93
C
16.00
X
13.37
BN
15.00
W
16.00
sx
13.43
QQ
15.00
ST
16.00
RG
13.60
UN
15.00
PM
16.07
L
13.60
E
15.00
NJ
16.17
EB
13.67
JN
15.00
NA
16.33
OY
13.70
-------
34 / 34 EMSL-LV Performance Evaluation: Blind-A, 19-Oct-1993
Uranium (Natural)
% responding labs Frequency distribution
oJ-S " i¦" Tm ,
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
ul
10-
0 liw , , «i wy
-4 -2 0 +2+4 +6
Normalized deviation of the mean from the grand average
-------
United States Environmental Monitoring EPA 600/R-94/015B
Environmental Protection Systems Laboratory October 1993
Agency P.O Box 93478
Las Vegas NV 89193-3478
Research and Development
Blind-B Performance
Evaluation Study
A Statistical Evaluation of
the October 19,1993 Data
-------
Blind-B
Performance Evaluation Study
October 19, 1993
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-B; October 19, 1993.
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: Blind-B, 19-Oct-1993
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.
-------
2/50 EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
The Range AnalysisfR + 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
TDraft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
-------
EMSL-LV Performance Evaluation: Blind
-------
(?
4/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
^
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
63.0
61.0
1.53
0.177
62.67
1.61
0.81
AA
44.0
41.0
47.0
3.00
0.354
44.00
-1.63
-2.42
AE
45.0
47.0
45.0
1.15
0.118
45.67
-1.34
-2.14
AF
55.0
47.0
50.0
4.04
0.473
50.67
-0.47
-1.27
AI
•
AJ
#
AK
99.0
94.0
93.0
3.21
0.354
95.33
7.26
0.47
X
AL
53.0
55.0
57.0
2.00
0.236
55.00
0.28
-0.52
AO
43.0
49.0
50.0
3.79
0.413
47.33
-1.05
-1.85
AP
48.0
54.0
50.0
3.06
0.354
50.67
-0.47
-1.27
AR
46.0
45.0
49.0
2.08
0.236
46.67
-1.17
-1.96
AU
53.0
59.0
56.0
3.00
0.354
56.00
0.45
-0.35
AW
61.0
58.0
56.0
2.52
0.295
58.33
0.86
0.06
AZ
70.0
63.0
72.0
4.73
0.532
68.33
2.59
1.79
BA
56.0
56.0
56.0
0.00
0.000
56.00
0.45
-0.35
BC
54.0
54.0
55.0
0.58
0.059
54.33
0.16
-0.64
BO
0
BH
51.0
50.0
48.0
1.53
0.177
49.67
-0.65
-1.44
BK
56.0
56.0
56.0
0.00
0.000
56.00
0.45
-0.35
BL
9
BM
52.0
51.0
54.0
1.53
0.177
52.33
-0.18
-0.98
BN
51.0
49.0
49.0
1.15
0.118
49.67
-0.65
-1.44
BO
50.0
49.0
51.0
1.00
0.118
50.00
-0.59
-1.39
BS
58.0
56.0
58.0
1.15
0.118
57.33
0.68
-0.12
BW
64.0
65.0
49.0
8.96
0.945
59.33
1.03
0.23
C
56.0
58.0
59.0
1.53
0.177
57.67
0.74
-0.06
CA
51.0
52.0
53.0
1.00
0.118
52.00
-0.24
-1.04
CE
55.0
56.0
56.0
0.58
0.059
55.67
0.39
-0.40
CG
53.0
56.0
51.0
2.52
0.295
53.33
-0.01
-0.81
CJ
49.0
50.0
55.0
3.21
0.354
51.33
-0.36
-1.15
CK
65.0
66.0
65.0
0.58
0.059
65.33
2.07
1.27
CM
•
CO
45.0
49.0
43.0
3.06
0.354
45.67
-1.34
-2.14
CP
46.0
45.0
48.0
1.53
0.177
46.33
-1.22
-2.02
CQ
55.0
59.0
61.0
3.06
0.354
58.33
0.86
0.06
CS
53.0
54.0
53.0
0.58
0.059
53.33
-0.01
-0.81
CX
45.0
45.0
49.0
2.31
0.236
46.33
-1.22
-2.02
D
52.0
52.0
53.0
0.58
0.059
52.33
-0.18
-0.98
DB
57.0
58.0
55.0
1.53
0.177
56.67
0.57
-0.23
DD
55.0
57.0
57.0
1.15
0.118
56.33
0.51
-0.29
DE
55.0
55.0
56.0
0.58
0.059
55.33
0.34
-0.46
DG
48.0
44.0
44.0
2.31
0.236
45.33
-1.40
-2.19
DJ
•
DL
51.0
50.0
53.0
1.53
0.177
51.33
-0.36
-1.15
DM
56.0
58.0
57.0
1.00
0.118
57.00
0.62
-0.17
• s No data submitted
TAG SYMBOLS
IT = Above control limit
0 = Insufficient data
X 3
Determined to be an outlier
11 = Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 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
•
DT
58.0
58.0
56.0
1.15
0.118
57.33
0.68
-0.12
DZ
58.0
60.0
62.0
2.00
0.236
60.00
1.14
0.35
E
55.0
56.0
54.0
1.00
0.118
55.00
0.28
-0.52
EB
58.0
59.0
59.0
0.58
0.059
58.67
0.91
0.12
EH
55.0
53.0
51.0
2.00
0.236
53.00
-0.07
-0.87
EL
•
EO
51.0
53.0
52.0
1.00
0.118
52.00
-0.24
-1.04
ER
•
EV
46.0
47.0
49.0
1.53
0.177
47.33
-1.05
-1.85
EX
•
FE
•
FF
46.0
50.0
47.0
2.08
0.236
47.67
-0.99
-1.79
FJ
69.0
69.0
69.0
0.00
0.000
69.00
2.70
1.91
FI>
•
FN
44.0
46.0
47.0
1.53
0.177
45.67
-1.34
-2.14
FU
44.0
45.0
45.0
0.58
0.059
44.67
-1.51
-2.31
FZ
41.0
43.0
29.0
7.57
0.827
37.67
-2.72
-3.52
GE
51.0
50.0
53.0
1.53
0.177
51-33
-0.36
-1.15
GI
•
GQ
53.0
54.0
56.0
1.53
0.177
54.33
0.16
-0.64
GT
784.0
766;0
728.0
28.48
5;396
769.00
122.21
121.42
X
GZ
61.0
61.0
58.0
1.73
0.177
60.00
1.14
0.35
EDS
12.0
10.0
9.0
1.53
0.177
10.33
-7.46
-8.26
X
HI
140.0
130.0
130.0
5.77
0.591
133:33
13.85
13.05
X
HK
56.0
56.0
56.0
0.00
0.000
56.00
0.45
-0.35
HL
56.0
56.0
56.0
0.00
0.000
56.00
0.45
-0.35
HN
•
HP
50.0
47.0
48.0
1.53
0.177
48.33
-0.88
-1.67
HU
69.0
68.0
70.0
1.00
0.118
69.00
2.70
1.91
HX
•
I
49.0
47.0
47.0
1.15
0.118
47.67
-0.99
-1.79
IA
•
IC
54.0
53.0
59.0
3.21
0.354
55.33
0.34
-0.46
ID
46.0
46.0
46.0
0.00
0.000
46.00
-1.28
-2.08
IE
IT
49.0
52.0
48.0
2.08
0.236
49.67
-0.65
-1.44
JJi
IU
•
•
J
57.0
58.0
58.0
0.58
0.059
57.67
0.74
-0.06
JE
58.0
58.0
56.0
1.15
0.118
57.33
0.68
-0.12
JG
109.0
134.0
122.0
12.50
1.908
121.67
11.82
11.03
JH
#
JN
65.0
63.0
63.0
1.15
0.118
63.67
1.78
0.98
JQ
•
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
H = Below control limit
-------
C(
6/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
^
Gross Beta
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average '
(grand-avg)
(known) Tag
JS
44.0
45.0
46.0
1.00
0.118
45.00
-1.45
-2.25
JX
•
JY
47.0
46.0
42.0
2.65
0.295
45.00
-1.45
-2.25
K
47.0
43.0
49.0
3.06
0.354
46.33
-1.22
-2.02
KE
49.0
50.0
50.0
0.58
0.059
49.67
-0.65
-1.44
KF
0
KT
95.0
100.0
110.0
7.64
0.886
101.67
8.36
7.56
X
KX
56.0
59.0
57.0
1.53
0.177
57.33
0.68
-0.12
KZ
47.0
46.0
47.0
0.58
0.059
46.67
-1.17
-1.96
L
55.0
56.0
59.0
2.08
0.236
56.67
0.57
-0.23
LA
•
LE
*
LF
61.0
57.0
62.0
2.65
0.295
60.00
1.14
0.35
LG
57.0
56.0
56.0
0.58
0.059
56.33
0.51
-0.29
LL
55.0
57.0
55.0
1.15
0.118
55.67
0.39
-0.40
LM
•
LR
50.0
58.0
55.0
4.04
0.473
54.33
0.16
-0.64
LT
52.0
52.0
52.0
0.00
0.000
52.00
-0.24
-1.04
M
89.0
90.0
89.0
0.58
0.059
89.33
6^2
6.43
X
MA
44.0
49.0
46.0
2.52
0.295
46.33
-1.22
-2.02
MN
•
MO
•
MP
•
MQ
54.0
58.0
52.0
3.06
0.354
54.67
0.22
-0.58
MS
43.0
41.0
43.0
1.15
0.118
42.33
-1.92
-2.71
MV
63.0
64.0
59.0
2.65
0.295
62.00
1.49
0.69
MY
131.0
0
N
•
NA
68.0
72.0
70.0
2.00
0.236
70.00
2.88
2.08
NG
53.0
47.0
46.0
3.79
0.413
48.67
-0.82
-1.62
NH
61.0
60.0
59.0
1.00
0.118
60.00
1.14
0.35
NJ
48.0
46.0
51.0
2.52
0.295
48.33
-0.88
-1.67
NK
•
NO
41.0
42.0
43.0
1.00
0.118
42.00
-1.97
-2.77
NT
47.0
47.0
47.0
0.00
0.000
47.00
-1.11
-1.91
O
55.0
56.0
55.0
0.58
0.059
55.33
0.34
-0.46
OF
62.0
64.0
74.0
6.43
0.709
66.67
2.30
1.50
OS
72.0
73.0
71.0
1.00
0.118
72.00
3.22
2.42
OX
54.0
50.0
57.0
3.51
0.413
53.67
0.05
-0.75
OY
62.0
67.0
69.0
3.61
0.413
66.00
2.18
1.39
OZ
•
P
56.0
55.0
50.0
3.21
0.354
53.67
0.05
-0.75
PA
54.0
52.0
50.0
2.00
0.236
52.00
-0.24
1
O
PB
59.0
60.0
59.0
0.58
0.059
59.33
1.03
0.23
PC
41.0
41.0
41.0
0.00
0.000
41.00
-2.15
-2.94
• =
No data submitted
TAG SYMBOLS
It s Above control limit
[0.
Insufficient data
x =
Determined to be an outlier
s Below control limit
0
-------
f,
EMSL-LV Performance Evaluation: Blind>B, 19-Oct-1993
^
7/50
Gross Beta
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PG
53.0
54.0
55.0
1.00
0.118
54.00
0.10
-0.69
PI
•
PM
58.0
62.0
52.0
5.03
0.591
57.33
0.68
-0.12
PP
•
PQ
53.0
53.0
53.0
0.00
0.000
53.00
-0.07
-0.87
PR
45.0
46.0
44.0
1.00
0.118
45.00
-1.45
-2.25
PT
49.0
51.0
47.0
2.00
0.236
49.00
-0.76
-1.56
PV
46.0
47.0
51.0
2.65
0.295
48.00
-0.93
-1.73
PW
•
PY
•
Q
55.0
57.0
61.0
3.06
0.354
57.67
0.74
-0.06
QC
57.0
58.0
59.0
1.00
0.118
58.00
0.80
0.00
QJ
53.0
50.0
51.0
1.53
0.177
51.33
-0.36
-1.15
QK
49.0
49.0
50.0
0.58
0.059
49.33
-0.70
-1.50
QL
•
QP
49.0
44.0
47.0
2.52
0.295
46.67
-1.17
-1.96
QQ
43.0
46.0
45.0
1.53
0.177
44.67
-1.51
-2.31
QT
60.0
59.0
60.0
0.58
0.059
59.67
1.09
0.29
QU
56.0
58.0
52.0
3.06
0.354
55.33
0.34
-0.46
QW
51.0
53.0
55.0
2.00
0.236
53.00
-0.07
-0.87
QX
56.0
55.0
55.0
0.58
0.059
55.33
0.34
-0.46
QZ
58.0
55.0
67.0
6.24
0.709
60.00
1.14
0.35
RC
54.0
51.0
47.0
3.51
0.413
50.67
-0.47
-1.27
RD
58.0
61.0
50.0
5.69
0.650
56.33
0.51
-0.29
RE
57.0
57.0
57.0
0.00
0.000
57.00
0.62
-0.17
RF
50.0
57.0
55.0
3.61
0.413
54.00
0.10
-0.69
RG
49.0
51.0
48.0
1.53
0.177
49.33
-0.70
-1.50
RJ
58.0
58.0
56.0
1.15
0.118
57.33
0.68
-0.12
RK
112.0
116.0
123.0
5.57
0.650
117.00
11.02
10.22
X
RL
•
RM
61.0
58.0
60.0
1.53
0.177
59.67
1.09
0.29
RP
•
RR
•
RT
•
RV
42.0
40.0
42.0
1.15
0.118
41.33
-2.09
-2.89
RZ
52.0
54.0
46.0
4.16
0.473
50.67
-0.47
-1.27
S
53.0
53.0
53.0
0.00
0.000
53.00
-0.07
-0.87
sc
53.0
53.0
54.0
0.58
0.059
53.33
-0.01
-0.81
SD
55.0
58.0
57.0
1.53
0.177
56.67
0.57
-0.23
SF
53.0
53.0
54.0
0.58
0.059
53.33
-0.01
-0.81
SI
45.0
48.0
46.0
1.53
0.177
46.33
-1.22
-2.02
SL
55.0
56.0
57.0
1.00
0.118
56.00
0.45
-0.35
SM
53.0
49.0
49.0
2.31
0.236
50.33
-0.53
-1.33
SO
51.0
51.0
52.0
0.58
0.059
51.33
-0.36
-1.15
SR
47.0
49.0
43.0
3.06
0.354
46.33
-1.22
-2.02
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
hi
0
Insufficient data
x =
Determined to be an outlier
H = Below control limit
>j
-------
8/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Gross Beta
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
52.0
48.0
50.0
2.00
0.236
50.00
-0.59
-1.39
ST
55.0
55.0
55.0
0.00
0.000
55.00
0.28
-0.52
SW
54.0
47.0
49.0
3.61
0.413
50.00
-0.59
-1.39
SX
47.0
52.0
48.0
2.65
0.295
49.00
-0.76
-1.56
sz
44.0
45.0
46.0
1.00
0.118
45.00
-1.45
-2.25
T
53.0
53.0
54.0
0.58
0.059
53.33
-0.01
-0.81
TA
TD
54.0
60.0
52.0
4.16
0.473
55.33
0.34
-0.46
TE
30.0
30.0
32.0
1.15
0.118
30.67
-3.94
-4.73
X
TG
53.0
58.0
48.0
5.00
0.591
53.00
-0.07
-0.87
TH
57.0
58.0
60.0
1.53
0.177
58.33
0.86
0.06
n
63.0
60.0
59.0
2.08
0.236
60.67
1.26
0.46
TK
• -
TL
9
TM
9
TN
53.0
57.0
59.0
3.06
0.354
56.33
0.51
-0.29
TP
55.0
55.0
55.0
0.00
0.000
55.00
0.28
-0.52
TQ
44.0
47.0
47.0
1.73
0.177
46.00
-1.28
-2.08
TS
66.0
67.0
65.0
1.00
0.118
66.00
2.18
1.39
TV
9 '
TY
48.0
47.0
48.0
0.58
0.059
47.67
-0.99
-1.79
U
49.0
49.0
50.0
0.58
0.059
49.33
-0.70
-1.50
UA
719.0
700.0
690.0
14.73
2.358
703.00
112.51
111.72
X
UB
•
UC
•
UE
57.0
56.0
57.0
0.58
0.059
56.67
0.57
-0.23
UG
75.0
73.0
72.0
1.53
0.177
73.33
3.45
2.66
UK
•
UN
53.0
59.0
57.0
3.06
0.354
56.33
0.51
-0.29
UP
50.0
50.0
51.0
0.58
0.059
50.33
-0.53
-1.33
UQ
56.0
54.0
53.0
1.53
0.177
54.33
0.16
-0.64
UW
60.0
60.0
56.0
2.31
0.236
58.67
0.91
0.12
UY
49.0
48.0
49.0
0.58
0.059
48.67
-0.82
-1.62
VA
9
VC
9
VG
45.0
40.0
45.0
2.89
0.295
43.33
-1.74
-2.54
W
56.0
55.0
55.0
0.58
0.059
55.33
0.34
-0.46
WA
9
X
47.0
44.0
48.0
2.08
0.236
46.33
-1.22
-2.02
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
10.33
X
HH
41.00
PC
42.33
MS
30.67
X
TE
41.33
RV
43.33
VG
37.67
FZ
42.00
NO
44.00
AA
• s No data submitted
TAG SYMBOLS
ir
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
s Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
9/50
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
44.67
QQ
50.00
BO
55.33
QU
44.67
FU
50.33
UP
55.33
o
45.00
sz
50.33
SM
55.33
IC
45.00
PR
50.67
RZ
55.33
DE
45.00
JY
50.67
RC
55.67
LL
45.00
JS
50.67
AP
55.67
CE
45.33
DG
50.67
AF
56.00
SL
45.67
FN
51.33
SO
56.00
HL
45.67
CO
51.33
QJ
56.00
HK
45.67
AE
51.33
GE
56.00
BK
46.00
TQ
51.33
DL
56.00
BA
46.00
ID
51.33
CJ
56.00
AU
46.33
X
52.00
PA
56.33
UN
46.33
SR
52.00
LT
56.33
TN
46.33
SI
52.00
EO
56.33
RD
46.33
MA
52.00
CA
56.33
LG
46.33
K
52.33
D
56.33
DD
46.33
CX
52.33
BM
56.67
UE
46.33
CP
53.00
TG
56.67
SD
46.67
QP
53.00
S
56.67
L
46.67
KZ
53.00
QW
56.67
DB
46.67
AR
53.00
PQ
57.00
RE
47.00
NT
53.00
EH
57.00
DM
47.33
EV
53.33
T
57.33
RJ
47.33
AO
53.33
SF
57.33
PM
47.67
TY
53.33
SC
57.33
KX
47.67
I
53.33
CS
57.33
JE
47.67
FF
53.33
CG
57.33
DT
48.00
PV
53.67
P
57.33
BS
48.33
NJ
53.67
OX
57.67
Q
48.33
HP
54.00
RF
57.67
J
48.67
UY
54.00
PG
57.67
C
48.67
NG
54.33
UQ
58.00
QC
49.00
SX
54.33
LR
58.33
TH
49.00
PT
54.33
GQ
58.33
CQ
49.33
U
54.33
BC
58.33
AW
49.33
RG
54.67
MQ
58.67
UW
49.33
QK
55.00
TP
58.67
EB
49.67
KE
55.00
ST
59.33
PB
49.67
IE
55.00
E
59.33
BW
49.67
BN
55.00
AL
59.67
RM
49.67
BH
55.33
W
59.67
QT
50.00
SW
55.33
TD
60.00
QZ
50.00
SS
55.33
QX
60.00
NH
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
IA a Below control limit
-------
10/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
60.00
LF
66.00
TS
73.33
UG
60.00
GZ
66.00
OY
89.33
X
M
60.00
DZ
66.67
OF
95.33
X
AK
60.67
TI
68.33
AZ
101.67
X
KT
62.00
MV
69.00
HU
117.00
X
RK
62.67
A
69.00
FJ
121.67
X
JG
63.67
JN
70.00
NA
133.33
X
HI
65.33
CK
72.00
OS
703.00
759.00
X
X
UA
GT
% responding labs
10-
Frequency distribution
-6
-4
0 +2
Normalized deviation of the mean from the known value
+4
—i—
+6
% responding labs
Frequency distribution
10-
o—p
-6
Mi—
n
-r-
+6
+2 +4
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS IT = Above control limit
(75 = TpflnffiHpnt. Hnt.n x = Determined to be an outlier W = Below control limit
-------
ff ¦ : - ^
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 11 /50
V ... )
( \
Strontium-89 Statistical Summary 219 Participants
The known value of this nuclide is 15.0 pCi/l 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
14.93
Grand Avg 13.96
Std. Dev.
6.26
3.03
Variance
39.25
9.20
% Coef. of Var.
41.96
21.72
% deviation of mean from known value
-0.47
-6.94
Norm. dev. of mean from known value
-0.01
-0.34
Median
14.00
14.00
% deviation of median from known value
-6.67
-6.67
Norm. dev. of median from known value
-0.16
-0.33
-------
f,
^
12/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Strontium-89
-v
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
16.0
14.0
18.0
2.00
0.473
16.00
0.71
0.35
AA
•
AE
23.0
22.0
23.0
0.58
0.118
22.67
3.02
2.66
AF
16.0
15.0
16.0
0.58
0.118
15.67
0.59
0.23
AI
•
AJ
•
AK
17.0
17.0
18.0
0.58
0.118
17.33
1.17
0.81
AL
12.0
12.0
12.0
0.00
0.000
12.00
-0.68
-1.04
AO
•
AP
•
AR
•
AU
19.0
15.0
24.0
4.51
1.120
19.33
1.86
1.50
AW
11.0
12.0
12.0
0.58
0.118
11.67
-0.79
-1.15
AZ
12.0
13.0
13.0
0.58
0.118
12.67
-0.45
-0.81
BA
18.0
19.0
15.0
2.08
0.473
17.33
1.17
0.81
BC
12.0
13.0
12.0
0.58
0.118
12.33
-0.56
-0.92
BO
•
BH
15.0
16.0
18.0
1.53
0.354
16.33
0.82
0.46
BK
•
BL
10.0
12.0
12.0
1.15
0.236
11.33
-0.91
-1.27
BM
13.0
14.0
15.0
1.00
0.236
14.00
0.01
-0.35
BN
•
BO
17.0
16.0
19.0
1.53
0.354
17.33
1.17
0.81
BS
•
BW
•
C
13.0
12.0
13.0
0.58
0.118
12.67
-0.45
-0.81
CA
12.0
11.0
11.0
0.58
0.118
11.33
-0.91
-1.27
CE
•
CG
6.0
9.0
9.0
1.73
0.354
8.00
-2.06
-2.42
CJ
15.0
14.0
16.0
1.00
0.236
15.00
0.36
0.00
CK
18.0
15.0
16.0
1.53
0.354
16.33
0.82
0.46
CM
O
CO
21.0
13.0
15.0
4.16
0.945
16.33
0.82
0.46
CP
o
CQ
13.0
14.0
14.0
0.58
0.118
13.67
-0.10
-0.46
CS
12.0
13.0
10.0
1.53
0.354
11.67
-0.79
-1.15
CX
17.0
14.0
15.0
1.53
0.354
15.33
0.48
0.12
D
17.0
17.0
17.0
0.00
0.000
17.00
1.05
0.69
DB
DD
15.0
15.0
13.0
1.15
0.236
14.33
0.13
-0.23
DE
12.0
13.0
13.0
0.58
0.118
12.67
-0.45
-0.81
DG
16.0
16.0
18.0
1.15
0.236
16.67
0.94
0.58
DJ
•
DL
. •
DM
1 •
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
I0 3
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
-V
-------
f,
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
'—^
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
13.0
14.0
16.0
1.53
0.354
14.33
0.13
-0.23
DS
•
DT
16.0
16.0
14.0
1.15
0.236
15.33
0.48
0.12
DZ
18.0
19.0
20.0
1.00
0.236
19.00
1.75
1.39
E
14.0
13.0
14.0
0.58
0.118
13.67
-0.10
-0.46
EB
14.0
17.0
17.0
1.73
0.354
16.00
0.71
0.35
EH
12.0
15.0
13.0
1.53
0.354
13.33
-0.22
-0.58
EL
12.0
13.0
13.0
0.58
0.118
12.67
-0.45
-0.81
EO
•
ER
•
EV
•
EX
•
FE
21.0
20.0
22.0
1.00
0.236
21.00
2.44
2.08
FF
•
FJ
•
FL
•
FN
•
FU
16.0
16.0
17.0
0.58
0.118
16.33
0.82
0.46
FZ
•
GE
•
GI
•
GQ
11.0
13.0
13.0
1.15
0.236
1233
-0.56
-0.92
GT
•
GZ
BH
HI
•
HK
14.0
14.0
14.0
0.00
0.000
14.00
0.01
-0.35
HL
•
HN
•
HP
13.0
14.0
14.0
0.58
0.118
13.67
-0.10
-0.46
HU
17.0
19.0
16.0
1.53
0.354
17.33
1.17
0.81
HX
•
I
21.0
24.0
23.0
1.53
0.354
22.67
3.02
266
IA
IC
10.0
13.0
13.0
1.73
0.354
12.00
-0.68
-1.04
ED
•
EE
•
n
IU
•
J
11.0
13.0
12.0
1.00
0.236
12.00
-0.68
-1.04
«JE
23.0
29.0
21.0
4.16
0.945
24.33
3.59
3.23 x
JG
13.0
12.0
10.0
1.53
0.354
11.67
-0.79
-1.15
JH
•
JN
•
JQ
•
• =
No data submitted
TAG SYMBOLS
It a Above control limit
L0-
Insufficient data
X s
Determined to be an outlier
U s Below control limit
V
-------
f(
14/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
/
Strontium-89
•N
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
18.0
17.0
17.0
0.58
0.118
17.33
1.17
0.81
JX
•
JY
9.0
10.0
10.0
0.58
0.118
9.67
-1.49
-1.85
K
10.0
13.0
10.0
1.73
0.354
11.00
-1.03
-1.39
KE
•
KF
•
KT
~
KX
13.0
13.0
13.0
0.00
0.000
13.00
-0.33
-0.69
KZ
L
16.0
17.0
16.0
0.58
0.118
16.33
0.82
0.46
LA
•
LE
•
LF
•
LG
•
LL
•
LM
•
LR
•
LT
15.0
15.0
15.0
0.00
0.000
15.00
0.36
0.00
M
10.0
11.0
11.0
0.58
0.118
10.67
-1.14
-1.50
MA
•
MN
•
MO
•
MP
•
MQ
12.0
11.0
12.0
0.58
0.118
11.67
-0.79
-1.15
MS
12.0
15.0
17.0
2.52
0.591
14.67
0.24
-0.12
MV
*
MY
•
N
•
NA
•
NG
•
NH
•
NJ
12.0
12.0
12.0
0.00
0.000
12.00
-0.68
o
1
NK
NO
•
NT
13.0
13.0
14.0
0.58
0.118
13.33
-0.22
-0.58
O
•
OF
•
OS
•
OX
•
OY
•
OZ
•
P
•
PA
•
PB
16.0
15.0
15.0
0.58
0.118
15.33
0.48
0.12
PC
61;0
60.0
62.0
1.00
0.236
61.00
16.30
15.93 x
• =
No data submitted
TAG SYMBOLS
1T s Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U s Below control limit
^
-V
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 15 / 50
f —
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PG
•
PI
•
PM
14.0
13.0
15.0
1.00
0.236
14.00
0.01
-0.35
PP
•
PQ
13.0
14.0
15.0
1.00
0.236
14.00
0.01
-0.35
PR
•
PT
22.0
16.0
19.0
3.00
0.709
19.00
1.75
1.39
PV
25.0
29.0
29.0
2.31
0.473
27.67
4.75
4.39 x
PW
•
PY
•
Q
17.0
14.0
14.0
1.73
0.354
15.00
0.36
0.00
QC
•
QJ
•
QK
15.0
13.0
14.0
1.00
0.236
14.00
0.01
-0.35
QL
12.0
10.0
9.0
1.53
0.354
10.33
-1.26
-1.62
QP
•
QQ
•
QT
QU
11.0
10.0
12.0
1.00
0.236
11.00
-1.03
-1.39
QW
12.0
12.0
12.0
0.00
0.000
12.00
-0.68
-1.04
QX
7.0
7.0
6.0
0.58
0.118
6.67
-2.53
-2.89
QZ
16.0
14.0
15.0
1.00
0.236
15.00
0.36
0.00
RC
•
RD
•
RE
•
RF
10.0
9.0
9.0
0.58
0.118
9.33
-1.60
-1.96
RG
•
RJ
•
RE
•
RL
•
RM
10.0
15.0
11.0
2.65
0.591
12.00
-0.68
-1.04
RP
•
RR
•
RT
•
RV
8.0
8.0
8.0
0.00
0.000
8.00
-2.06
-2.42
RZ
•
S
34.0
36.0
35.0
1.00
0.236
35.00
7.29
6.93 x
sc
13.0
14.0
13.0
0.58
0.118
13.33
-0.22
-0.58
SD
13.0
12.0
14.0
1.00
0.236
13.00
-0.33
-0.69
SF
14.0
10.0
12.0
2.00
0.473
12.00
-0.68
-1.04
SI
6.0
5.0
6.0
0.58
0.118
5.67
-2.87
-3.23
SL
•
SM
13.0
13.0
13.0
0.00
0.000
13.00
-0.33
-0.69
SO
•
SB
~
• =
[0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
U = Below control limit
-------
16/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average'
Normalized deviation
(grand-avg) (known)
SS
12.0
13.0
14.0
1.00
0.236
13.00
-0.33
-0.69
ST
16.0
15.0
21.0
3.21
0.709
17.33
1.17
0.81
sw
14.0
13.0
15.0
1.00
0.236
14.00
0.01
-0.35
sx
sz
T
15.0
15.0
15.0
0.00
0.000
15.00
0.36
0.00
TA
TD
19.0
15.0
18.0
2.08
0.473
17.33
1.17
0.81
TE
TG
13.0
18.0
14.0
2.65
0.591
15.00
0.36
0.00
TH
ti
9.0
9.0
8.0
0.58
0.118
8.67
-1.83
-2.19
TK
TL
tm
TN
TP
15.0
14.0
15.0
0.58
0.118
14.67
0.24
-0.12
TQ
17.0
14.0
15.0
1.53
0.354
15.33
0.48
0.12
TS
TV
TY
U
14.0
14.0
14.0
0.00
0.000
14.00
0.01
-0.35
UA
UB
UC
UE
14.0
15.0
14.0
0.58
0.118
14.33
0.13
-0.23
UG
UK
UN
10.0
17.0
16.0
3.79
0.827
14.33
0.13
-0.23
UP
14.0
15.0
15.0
0.58
0.li8
14.67
0.24
-0.12
UQ
uw
15.0
9.0
15.0
3.46
0.709
13.00
-0.33
-0.69
UY
VA
VC
VG
11.0
10.0
11.0
0.58
0.118
10.67
-1.14
-1.50
W
12.0
13.0
13.0
0.58
0.118
12.67
-0.45
-0.81
WA
X
16.0
13.0
15.0
1.53
0.354
14.67
0.24
-0.12
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.67
SI
8.00
CG
9.67
JY
6.67
QX
8.67
TI
10.33
QL
8.00
RV
9.33
RF
10.67
VG
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
U = Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
17/50
Strontivun-89
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
10.67
M
13.33
SC
15.33
DT
11.00
QU
13.33
NT
15.33
CX
11.00
K
13.33
EH
15.67
AF
11.33
CA
13.67
HP
16.00
EB
11.33
BL
13.67
E
16.00
A
11.67
MQ
13.67
CQ
16.33
L
11.67
JG
14.00
U
16.33
FU
11.67
CS
14.00
SW
16.33
CO
11.67
AW
14.00
QK
16.33
CK
12.00
SF
14.00
PQ
16.33
BH
12.00
RM
14.00
PM
16.67
DG
12.00
QW
14.00
HK
17.00
D
12.00
NJ
14.00
BM
17.33
TD
12.00
J
14.33
UN
17.33
ST
12.00
IC
14.33
UE
17.33
JS
12.00
AL
14.33
DO
17.33
HU
12.33
GQ
14.33
DD
17.33
BO
12.33
BC
14.67
X
17.33
BA
12.67
W
14.67
UP
17.33
AK
12.67
EL
14.67
TP
19.00
PT
12.67
DE
14.67
MS
19.00
DZ
12.67
C
15.00
TG
19.33
AU
12.67
AZ
15.00
T
21.00
FE
13.00
UW
15.00
QZ
22.67
I
13.00
ss
15.00
Q
22.67
AE
13.00
SM
15.00
LT
24.33
X
cJE
13.00
SD
15:00
CJ
27.67
X
PV
13.00
KX
15.33
TQ
35.00
X
s
15.33
PB
61.00
X
PC
% responding labs Frequency distribution
io- -
i i t" t i 1 r—- i" !—¦—i 1—
-4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
• = No data submitted TAG SYMBOLS IT = Above control limit
I 0 s Insufficient data x = Determined to be an outlier II = Below control limit
^ —o
-------
18/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Strontium-89
% responding labs Frequency distribution
l0.
-i 1 r— 1 " ^—- T ~—i r
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 19/50
Strontium-90 Statistical Summary 219 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 5.0; the control limits
are 1.3 to 18.7; the warning regions are 1.3 to 4.2 and 15.8 to 18.7
Statistic Respondents Non-outliers
Mean
10.72
Grand Avg 10.26
Std. Dev.
3.50
2.02
Variance
12.27
4.10
% Coef. of Var.
32.69
19.74
% deviation of mean from known value
7.16
2.56
Norm. dev. of mean from known value
0.20
0.13
Median
10.00
10.00
% deviation of median from known value
0.00
0.00
Norm. dev. of median from known value
0.00
0.00
-------
20 / 50 EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
9.0
9.0
10.0
0.58
0.118
9.33
-0.32
-0.23
AA
11.0
9.0
9.0
1.15
0.236
9.67
-0.20
-0.12
AE
10.0
10.0
10.0
0.00
0.000
10.00
-0.09
0.00
AF
9.0
9.0
10.0
0.58
0.118
9.33
-0.32
-0.23
AI
e
AJ
•
AK
9.0
11.0
11.0
1.15
0.236
10.33
0.03
0.12
AL
10.0
10.0
10.0
0.00
0.000
10.00
-0.09
0.00
AO
•
AP
•
AR
•
AU
12.0
11.0
8.0
2.08
0.473
10.33
0.03
0.12
AW
13.0
13.0
12.0
0.58
0.118
12.67
0.84
0.92
AZ
12.0
12.0
11.0
0.58
0.118
11.67
0.49
0.58
BA
9.0
8.0
10.0
1.00
0.236
9.00
-0.44
-0.35
BC
8.0
8.0
8.0
0.00
0.000
8.00
-0.78
-0.69
BG
•
BH
10.0
8.0
9.0
1.00
0.236
9.00
-0.44
-0.35
BK
BL
8.0
8.0
8.0
0.00
0.000
8.00
-0.78
-0.69
BM
10.0
9.0
9.0
0.58
0.118
9.33
-0.32
-0.23
BN
•
BO
9.0
9.0
8.0
0.58
0.118
8.67
-0.55
-0.46
BS
•
BW
•
C
10.0
11.0
10.0
0.58
0.118
10.33
0.03
0.12
CA
11.0
11.0
11.0
0.00
0.000
11.00
0.26
0.35
CE
11.0
11.0
10.0
0.58
0.118
10.67
0.14
0.23
CG
12.0
12.0
12.0
0.00
0.000
12.00
0.60
0.69
CJ
10.0
10.0
10.0
0.00
0.000
10.00
-0.09
0.00
CK
11.0
11.0
10.0
0.58
0.118
10.67
0.14
0.23
CM
CO
6.0
8.0
8.0
1.15
0.236
7.33
-1.01
-0.92
CP
. •
CQ
11.0
11.0
10.0
0.58
0.118
10.67
0.14
0.23
CS
11.0
11.0
12.0
0.58
0.118
11.33
0.37
0.46
CX
9.0
10.0
12.0
1.53
0.354
10.33
0.03
0.12
D
10.0
10.0
10.0
0.00
0.000
10.00
-0.09
0.00
DB
•
DD
9.0
9.0
9.0
0.00
0.000
9.00
-0.44
-0.35
DE
10.0
10.0
11.0
0.58
0.118
10.33
0.03
0.12
DG
11.0
11.0
11.0
0.00
0.000
11.00
0.26
0.35
DJ
•
DL
ft ¦
DM
•-
• s No data submitted TAG SYMBOLS IT = Above control limit
0 == Insufficient data x = Determined to be an outlier U = Below control limit
y- 'J
-------
(?
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
21 / 50
f
Strontium-90
\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DO
11.0
11.0
11.0
0.00
0.000
11.00
0.26
0.35
DS
•
DT
9.0
7.0
8.0
1.00
0.236
8.00
-0.78
-0.69
DZ
10.0
11.0
12.0
1.00
0.236
11.00
0.26
0.35
E
11.0
10.0
10.0
0.58
0.118
10.33
0.03
0.12
EB
7.0
8.0
9.0
1.00
0.236
8.00
-0.78
-0.69
EH
10.0
9.0
9.0
0.58
0.118
9.33
-0.32
-0.23
EL
9.0
9.0
8.0
0.58
0.118
8.67
-0.55
-0.46
EO
*
EB
•
EV
•
EX
•
FE
8.0
9.0
11.0
1.53
0.354
9.33
-0.32
-0.23
FF
•
FJ
•
FL
•
FN
•
FU
9.0
9.0
9.0
0.00
0.000
9.00
-0.44
-0.35
FZ
•
GE
•
GI
•
GQ
17.0
15.0
13.0
2.00
0.473
15.00
1.64
1.73
GT
•
GZ
•
HH
•
HI
•
HK
9.0
9.0
9.0
0.00
0.000
9.00
-0.44
.0.35
HL
•
HN
HP
10.0
12.0
10.0
1.15
0.236
10.67
0.14
0.23
HU
21.0
20;0
20.0
0.58
0.118
20.33
3.49
3*68 x
HX
I
8.0
8.0
8.0
0.00
0.000
8.00
-0.78
-0.69
IA
IC
12.0
io!o
10.0
1.15
0.236
10.67
0.14
0.23
n>
•
IE
•
n
•
IU
•
j
11.0
11.0
11.0
0.00
0.000
11.00
0.26
0.35
JE
9.0
7.0
11.0
2.00
0.473
9.00
-0.44
-0.35
JG
7.0
9.0
7.0
1.15
0.236
7.67
-0.90
-0.81
JH
•
JN
•
JQ
•
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
in
Q
—')
Insufficient data
x =
Determined to be an outlier
•H s Below control limit
V
-------
22/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Strontium-90
*
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
13.0
17.0
11.0
3.06
0.709
13.67
1.18
1.27
JX
m
JY
13.0
9.0
12.0
2.08
0.473
11.33
0.37
0.46
K
10.0
10.0
11.0
0.58
0.118
10.33
0.03
0.12
KE
•
KF
•
KT
KX
10.0
11.0
10.0
0.58
0.118
10.33
0.03
0.12
KZ
L
10.0
9.0
10.0
0.58
0.118
9.67
-0.20
-0.12
LA
~ •
LE
•
LF
•
LG
•
LL
•
LM
•
LB
LT
10.0
10.0
10.0
0.00
0.000
10.00
-0.09
0.00
M
15.0
14.0
14.0
0.58
0.118
14.33
141
1.50
MA
MN
•
MO
•
MP
MQ
12.0
10.0
13.0
1.53
0.354
11.67
0.49
0.58
MS
8.0
8.0
10.0
1.15
0.236
8.67
-0.55
-0.46
MV
•
MY
9
N
NA
.NG-
•
NH
•
NJ
9.0
9.0
9.0
0.00
0.000
9.00
-0.44
-0.35
NK
NO
•
NT
10.0
10.0
10.0
0.00
0.000
10.00
-0.09
0.00
O
OF
•
OS
•
OX
~
OY
•
OZ
•
P
•
PA
PB
9.0
10.0
10.0
0.58
0.118
9.67
-0.20
-0.12
PC
38.0
36.0
31.0
3.61
0.827
35.00
8.57
8.66: x
• s No data submitted TAG SYMBOLS IT = Above control limit
0 s Insufficient data x s Determined to be an outlier 11 s Below control limit
-------
r =^v
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 23/50
( '
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PG
•
PI
•
PM
10.0
11.0
10.0
0.58
0.118
10.33
0.03
0.12
PP
12.0
12.0
12.0
0.00
0.000
12.00
0.60
0.69
PQ
9.0
9.0
9.0
0.00
0.000
9.00
-0.44
-0.35
PR
•
PT
9.0
10.0
10.0
0.58
0.118
9.67
-0.20
-0.12
PV
10.0
8.0
9.0
1.00
0.236
9.00
-0.44
-0.35
PW
•
PT
•
Q
16.0
13.0
14.0
1.53
0.354
14.33
1.41
1.50
QC
QJ
10.0
9.0
9.0
0.58
0.118
9.33
-0.32
-0.23
QK
9.0
10.0
9.0
0.58
0.118
9.33
-0.32
-0.23
QL
7.0
9.0
8.0
1.00
0.236
8.00
-0.78
-0.69
QP
QQ
•
QT
•
QU
12.0
15.0
14.0
1.53
0.354
13.67
1.18
1.27
QW
18.0
18.0
19.0
0.58
0.118
18.33
2.80
2.89
QX
15.0
14.0
15.0
0.58
0.118
14.67
1.53
1.62
QZ
8.0
9.0
9.0
0.58
0.118
8.67
-0.55
-0.46
RC
•
RD
•
RE
RF
9.0
10.0
9.0
0.58
0.118
9.33
-0.32
-0.23
RG
RJ
RK
6.0
10.0
8.0
2.00
0.473
8.00
-0.78
-0.69
RL
RM
13.0
11.0
11.0
1.15
0.236
11.67
0.49
0.58
RP
•
RR
RT
•
RV
11.0
12.0
11.0
0.58
0.118
11.33
0.37
0.46
RZ
S
9.0
8.0
8.0
0.58
0.118
8.33
-0.67
-0.58
sc
8.0
8.0
8.0
0.00
0.000
8.00
-0.78
-0.69
SD
12.0
12.0
12.0
0.00
0.000
12.00
0.60
0.69
SF
12.0
12.0
12.0
0.00
0.000
12.00
0.60
0.69
SI
15.0
14.0
14.0
0.58
0.118
14.33
1.41
1.50
SL
' •
SM
5.0
6.0
6.0
0.58
0.118
5.67
-1.59
-1.50
SO
' •
SR
•
• = No data submitted TAG SYMBOLS It = Above control limit
I 0 = Insufficient data x = Determined to be an outlier = Below control limit
-------
24/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Strontium-90
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
10.0
11.0
9.0
1.00
0.236
10.00
-0.09
0.00
ST
10.0
10.0
11.0
0.58
0.118
10.33
0.03
0.12
SW
10.0
11.0
9.0
1.00
0.236
10.00
-0.09
0.00
sx
•
sz
6.0
6.0
7.0
0.58
0.118
6.33
-1.36
-1.27
T
8.0
9.0
9.0
0.58
0.118
8.67
-0.55
-0.46
TA
•
TD
10.0
13.0
11.0
1.53
0.354
11.33
0.37
0.46
TE
9
TG
10.0
9.0
10.0
0.58
0.118
9.67
-0.20
-0.12
TH
22.0
22.0
23.0
0.58
0.118
22.33
4.18
4.27 x
TI
10.0
10.0
11.0
0.58
0.118
10.33
0.03
0.12
TK
•
TL
•
TM
•
TN
TP
11.0
11.0
10.0
0.58
0.118
10.67
0.14
0.23
TQ
11.0
11.0
13.0
1.15
0.236
11.67
0.49
0.58
TS
TV
•
TY
•
U
10.0
9.0
9.0
0.58
0.118
9.33
-0.32
-0.23
UA
•
UB
•
UC
•
UE
10.0
10.0
10.0
0.00
0.000
10.00
-0.09
0.00
UG
UK
•
UN
16.0
16.0
18.0
1.15
0.236
16.67
2.22
2.31
UP
12.0
14.0
11.0
1.53
0.354
1233
0.72
081
UQ
uw
10.0
8.0
y.o
1.00
0.236
9.00
-0.44
-0.35
UY
•
VA
•
vc
•
VG
8.0
8.0
8.0
0.00
0.000
8.00
-0.78
-0.69
W
9.0
8.0
10.0
1.00
0.236
9.00
-0.44
-0.35
WA
•
X
11.0
10.0
11.0
0.58
0.118
10.67
0.14
0.23
Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
5.67
SM
7.67
JG
8.00
RK
6.33
SZ
8.00
VG
8.00
QL
7.33
CO
8.00
SC
8.00
I
• = No data submitted
TAG SYMBOLS
IT
s Above control limit
0 = Insufficient data
x = Determined to be an outlier
U
= Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
25/50
Strontium-90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.00
EB
9.67
PT
11.00
J
8.00
DT
9.67
PB
11.00
DZ
8.00
BL
9.67
L
11.00
DO
8.00
BC
9.67
AA
11.00
DG
8.33
S
10.00
UE
11.00
CA
8.67
T
10.00
SW
11.33
TD
8.67
QZ
10.00
ss
11.33
RV
8.67
MS
10.00
NT
11.33
JY
8.67
EL
10.00
LT
11.33
CS
8.67
BO
10.00
D
11.67
TQ
9.00
W
10.00
CJ
11.67
RM
9.00
UW
10.00
AL
11.67
MQ
9.00
PV
10.00
AE
11.67
AZ
9.00
PQ
10.33
TI
12.00
SF
9.00
NJ
10.33
ST
12.00
SD
9.00
JE
10.33
PM
12.00
PP
9.00
HK
10.33
KX
12.00
CG
9.00
FU
10.33
K
12.33
UP
9.00
DD
10.33
E
12.67
AW
9.00
BH
10.33
DE
13.67
QU
9.00
BA
10.33
CX
13.67
JS
9.33
U
10.33
C
14.33
SI
9.33
RF
10.33
AU
14.33
Q
9.33
QK
10.33
AK
14.33
M
9.33
QJ
10.67
X
14.67
QX
9.33
FE
10.67
TP
15.00
GQ
9.33
EH
10.67
IC
16.67
UN
9.33
BM
10.67
HP
18.33
QW
9.33
AF
10.67
CQ
20.33
X
HU
9.33
A
10.67
CK
22.33
X
TH
9.67
TG
10.67
CE
35.00
X
PC
responding labs
Frequency distribution
-2 0 +2 +4
Normalized deviation of the mean from the known value
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
fl s Above control limit
J! = Below control limit
-------
(f
26/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Strontium-90
% responding labs Frequency distribution
20-
10-
T 1 1 1 I I I ~ ~ I—™ r" 1 1™3
-6 *4 -2 0 +2 +4 +6
Normalized deviation of the mean from the gTand average
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 27 / 50
Cobalt-60 Statistical Summary 219 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 5.0; the control limits
are 1.3 to 18.7; the warning regions are 1.3 to 4.2 and 15.8 to 18.7
Statistic Respondents Non-outliers
Mean
10.81
Grand Avg 10.41
Std. Dev.
3.43
1.63
Variance
11.79
2.67
% Coef. of Var.
31.76
15.71
% deviation of mean from known value
8.13
4.05
Norm. dev. of mean from known value
0.24
0.25
Median
10.00
10.00
% deviation of median from known value
0.00
0.00
Norm. dev. of median from known value
0.00
0.00
-------
28/50 EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
^
f Cobalt-60 ~ ~~
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
9.0
9.0
10.0
0.58
0.118
9.33
-0.37
-0.23
AA
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
AE
9.0
9.0
10.0
0.58
0.118
9.33
-0.37
-0.23
AF
11.0
9.0
10.0
1.00
0.236
10.00
-0.14
0.00
AI
•
AJ
•
AK
11.0
12.0
11.0
0.58
0.118
11.33
0.32
0.46
AL
12.0
11.0
11.0
0.58
0.118
11.33
0.32
0.46
AO
•
AP
13.0
11.0
11.0
1.15
0.236
11.67
0.44
0.58
AR
* '
AU
13.0
10.0
10.0
1.73
0.354
11.00
0.21
0.35
AW
11.0
11.0
6.0
2.89
0.591
9.33
-0.37
-0.23
AZ
7.0
9.0
9.0
1.15
0.236
8.33
-0.72
-0.58
BA
8.0
10.0
11.0
1.53
0.354
9.67
-0.26
-0.12
BC
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
BG
•
BH
13.0
11.0
12.0
1.00
0.236
12.00
0.55
0.69
BK
9.0
10.0
10.0
0.58
0.118
9.67
-0.26
-0.12
BL
10.0
9.0
11.0
1.00
0.236
10.00
-0.14
0.00
BM
11.0
10.0
11.0
0.58
0.118
10.67
0.09
0.23
BN
21.0
20.0
19.0
1.00
0.236
20.00
3.32
3.46
X
BO
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
BS
•
BW
17.0
14.0
16.0
1.53
0.354
15.67
1.82
1.96
C
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
CA
10.0
11.0
11.0
0.58
0.118
10.67
0.09
0.23
CE
11.0
11.0
10.0
0.58
0.118
10.67
0.09
0.2^
CG
CJ
13.0
11.0
12.0
1.00
0.236
12.00
0.55
0.69
CK
9.0
10.0
11.0
1.00
0.236
10.00
-0.14
0.00
CM
12.0
2.0
15.0
6.81
2.020
9.67
-0.26
-0.12
CO
15.0
15.0
14.0
0.58
0.118
14.67
1.48
1.62
CP
11.0
11.0
10.0
0.58
0.118
10.67
0.09
0.23
CQ
10.0
11.0
14.0
2.08
0.473
11.67
0.44
0.58
CS
12.0
11.0
12.0
0.58
0.118
11.67
0.44
0.58
CX
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
D
6.0
10.0
9.0
2.08
0.473
8.33
-0.72
-0.58
DB
•
DD
9.0
7.0
8.0
1.00
0.236
8.00
-0.83
-0.69
DE
12.0
12.0
13.0
0.58
0.118
12.33
0.67
0.81
DG
11.0
12.0
12.0
0.58
0.118
11.67
0.44
0.58
DJ
•
DL
9.0
10.0
11.0
1.00
0.236
10.00
-0.14
0.00
DM
10.0
10.0
10.0
0.00
0.000
10.00
I
©
i—»
0.00
• ~
No data submitted
TAG SYMBOLS
ft = Above control limit
0 = Insufficient data x s Determined to be an outlier U ~ Below control limit
-------
_
^
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 29/50
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DO
13.0
13.0
13.0
0.00
0.000
13.00
0.90
1.04
DS
•
DT
9.0
11.0
13.0
2.00
0.473
11.00
0.21
0.35
DZ
9.0
9.0
10.0
0.58
0.118
9.33
-0.37
-0.23
E
9.0
9.0
10.0
0.58
0.118
9.33
-0.37
-0.23
EB
9.0
10.0
9.0
0.58
0.118
9.33
-0.37
-0.23
EH
9.0
9.0
9.0
0.00
0.000
9.00
-0.49
-0.35
EL
10.0
9.0
10.0
0.58
0.118
9.67
-0.26
-0.12
EO
EB
•
EV
• .
EX
11.0
10.0
9.0
1.00
0.236
10.00
-0.14
0.00
FE
10.0
10.0
11.0
0.58
0.118
10.33
-0.02
0.12
FF
FJ
10.0
10.0
12.0
1.15
0.236
10.67
0.09
0.23
FL
•
FN
•
FU
9.0
10.0
10.0
0.58
0.118
9.67
-0.26
-0.12
FZ
10.0
13.0
13.0
1.73
0.354
12.00
0.55
0.69
GE
9.0
10.0
11.0
1.00
0.236
10.00
-0.14
0.00
GI
9.0
12.0
10.0
1.53
0.354
10.33
-0.02
0.12
GQ
. *
GT
•
GZ
•
HH
•
m
25.0
27.0
26.0
1.00
0.236
26.00
5.40
5.54
X
HK
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
HL
12.0
11.0
12.0
0.58
0.118
11.67
0.44
0.58
HN
4
HP
10.0
8.0
9.0
1.00
0.236
9.00
-0.49
-0.35
HU
17.0
17.0
18.0
0.58
0.118
17.33
2.40
2.54
HX
m
I
11.0
12.0
13.0
1.00
0.236
12.00
0.55
0.69
IA
11.0
10.0
8.0
1.53
0.354
9.67
-0.26
-0.12
IC
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
ID
•
EE
•
n
•
IU
•
J
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
JE
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
JG
10.0
8.0
7.0
1.53
0.354
8.33
-0.72
-0.58
JH
-
¦
JN
9
JQ
r
• =
0 S
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
li = Below control limit
-------
f.
s\
30/50
V
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Cobalt-60
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
10.0
11.0
14.0
2.08
0.473
11.67
0.44
0.58
JX
•
JY
11.0
10.0
13.0
1.53
0.354
11.33
0.32
0.46
K
13.0
13.0
13.0
0.00
0.000
13.00
0.90
1.04
KE
•
KF
0
KT
0
KX
10.0
11.0
11.0
0.58
0.118
10.67
0.09
0.23
KZ
•
L
12.0
9.0
11.0
1.53
0.354
10.67
0.09
0.23
LA
•
LE
' •
LF
10.0
11.0
11.0
0.58
0.118
10.67
0.09
0.23
LG
•
LL
•
LM
LR
13.0
12.0
9.0
2.08
0.473
11.33
0.32
0.46
LT
9.0
10.0
10.0
0.58
0.118
9.67
-0.26
-0.12
M
10.0
9.0
10.0
0.58
0.118
9.67
-0.26
-0.12
MA
9.0
9.0
9.0
0.00
0.000
9.00
-0.49
-0.35
MN
•
MO
•
MP
10.0
10.0
11.0
0.58
0.118
10.33
-0.02
0.12
MQ
13.0
15.0
15.0
1.15
0.236
14.33
1.36
1.50
MS
12.0
11.0
12.0
0.58
0.118
11.67
0.44
0.58
MV
5.0
5.0
10.0
2.89
0.591
6.67
-1.30
-1.15
MY
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
N
, •
NA
, •<
NG
•
NH
10.0
9.0
11.0
1.00
0.236
10.00
-0.14
0.00
NJ
11.0
13.0
11.0
1.15
0.236
11.67
0.44
0.58
NK
8.0
5.0
6.0
1.53
0.354
6.33
-1.41.
-1.27
NO
•-
NT
•
O
11.0
11.0
11.0
0.00
0.000
11.00
0.21
0.35
OF
•
OS
•
OX
•
OY
•
OZ
•
P
16.0
18.0
17.0
1.00
0.236
17.00
2.28
2.42
PA
•
PB
10.0
11.0
10.0
0.58
0.118
10.33
-0.02
0.12
PC
10.0
11.0
12.0
1.00
0.236
11.00
0.21
0.35
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
l0s
Insufficient data
X 2
Determined to be an outlier
U = Below control limit
'j
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 31 /50
r
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PG
•
PI
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
PM
13.0
10.0
8.0
2.52
0.591
10.33
-0.02
0.12
PP
10.0
9.0
12.0
1.53
0.354
10.33
-0.02
0.12
PQ
42.0
40.0
41.0
1.00
0.236
41.00
10.60
10.74
X
PR
•
PT
12.0
9.0
12.0
1.73
0.354
11.00
0.21
0.35
PV
10.0
10.0
13.0
1.73
0.354
11.00
0.21
0.35
PW
10.0
9.0
9.0
0.58
0.118
9.33
-0.37
-0.23
PY
•
Q
10.0
10.0
9.0
0.58
0.118
9.67
-0.26
-0.12
QC
•
QJ
10.0
14.0
13.0
2.08
0.473
12.33
0.67
0.81
QK
10.0
11.0
10.0
0.58
0.118
10.33
-0.02
0.12
QL
9.0
10.0
9.0
0.58
0.118
9.33
-0.37
-0.23
QP
13.0
10.0
14.0
2.08
0.473
12.33
0.67
0.81
QQ
•
QT
9.0
10.0
10.0
0.58
0.118
9.67
-0.26
-0.12
QU
11.0
11.0
10.0
0.58
0.118
10.67
0.09
0.23
QW
*"
QX
11.0
12.0
13.0
1.00
0.236
12.00
0.55
0.69
QZ
10.0
12.0
10.0
1.15
0.236
10.67
0.09
0.23
RC
8.0
9.0
7.0
1.00
0.236
8.00
-0.83
-0.69
RD
9
RE
•
RF
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
RG
•
RJ
RK
10.0
9.0
9.0
0.58
0.118
9.33
-0.37
-0.23
RL
•
RM
10.0
11.0
11.0
0.58
0.118
10.67
0.09
0.23
RP
•
RR
RT
RV
7.0
10.0
10.0
1.73
0.354
9.00
-0.49
-0.35
RZ
8.0
9.0
9.0
0.58
0.118
8.67
-0.60
-0.46
S
8.0
10.0
10.0
1.15
0.236
9.33
-0.37
-0.23
sc
10.0
11.0
12.0
1.00
0.236
11.00
0.21
0.35
SD
9.0
9.0
9.0
0.00
0.000
9.00
-0.49
-0.35
SF
11.0
10.0
11.0
0.58
0.118
10.67
0.09
0.23
SI
8.0
7.0
11.0
2.08
0.473
8.67
-0.60
-0.46
SL
•
SM
8.0
11.0
9.0
1.53
0.354
9.33
-0.37
-0.23
SO
•
SR
10.0
11.0
10.0
0.58
0.118
10.33
-0.02
0.12
• =
0 a
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
11 s Above control limit
= Below control limit
• 'J
-------
32/50
EMSL-LV Performance Evaluationr Blind-B, 19-Oct-1993
Cobalt-60
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
11.0
9.0
9.0
1.15
0.236
9.67
-0.26
-0.12
ST
9.0
9.0
9.0
0.00
0.000
9.00
-0.49
-0.35
SW
9.0
9.0
10.0
0.58
0.118
9.33
-0.37
-0.23
sx
6.0
6.0
5.0
0.58
0.118
5.67
-1.64
-1.50
sz
10.0
9.0
10.0
0.58
0.118
9.67
-0.26
-0.12
T
9.0
8.0
8.0
0.58
0.118
8.33
-0.72
-0.58
TA
10.0
9.0
11.0
1.00
0.236
10.00
-0.14
0.00
TD
13.0
13.0
14.0
0.58
0.118
13.33
1.01
1.15
TE
•
TG
13.0
11.0
9.0
2.00
0.473
11.00
0.21
0.35
TH
10.0
11.0
9.0
1.00
0236
10.00
-0.14
0.00
TT
11.0
11.0
11.0
0.00
0.000
11.00
0.21
0.35
TK
9.0
9.0
10.0
0.58
0.118
9.33
-0.37
-0.23
TL
•
TM
•
TN
•
TP
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
TQ
9.0
9.0
9.0
0.00
0.000
9.00
-0.49
-0.35
TS
9.0
9.0
9.0
0.00
0.000
9.00
-0.49
-0.35
TV
~
TY
U
10.0
11.0
10.0
0.58
0.118
10.33
-0.02
0.12
UA
•
UB
•
UC
4
UE
11.0
11.0
11.0
0.00
0.000
11.00
0.21
0.35
UG
•
UK
9
UN
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
UP
9.0
9.0
10.0
0.58
0.118
9.33
-0.37
-0.23
UQ
•
uw
12.0
11.0
11.0
0.58
0.118
11.33
0.32
0.46
UY
10.0
12.0
12.0
1.15
0.236
11.33
0.32
0.46
VA
•
VC
0
VG
12.0
10.0
9.0
1.53
0.354
10.33
-0.02
0.12
W
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
WA
10.0
10.0
10.0
0.00
0.000
10.00
-0.14
0.00
X
13.0
12.0
12.0
0.58
0.118
12.33
0.67
0.81
m
Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
5.67
SX
8.00
RC
8.33
JG
6.33
NK
8.00
DD
8.33
D
6.67
MV
8.33
T
8.33
AZ
• = No data submitted
TAG SYMBOLS
ft
s Above control limit
0 = Insufficient data
x = Determined to be an outlier
s Below control limit
-------
=\
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 33/50
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.67
SI
10.00
RF
11.00
TI
8.67
RZ
10.00
PI
11.00
TG
9.00
TS
10.00
NH
11.00
SC
9.00
TQ
10.00
MY
11.00
PV
9.00
ST
10.00
JE
11.00
PT
9.00
SD
10.00
J
11.00
PC
9.00
RV
10.00
IC
11.00
O
9.00
MA
10.00
HK
11.00
DT
9.00
HP
10.00
GE
11.00
AU
9.00
EH
10.00
EX
11.33
UY
9.33
UP
10.00
DM
11.33
UW
9.33
TK
10.00
DL
11.33
LR
9.33
SW
10.00
CX
11.33
JY
9.33
SM
10.00
CK
11.33
AL
9.33
S
10.00
C
11.33
AK
9.33
RK
10.00
BO
11.67
NJ
9.33
QL
10.00
BL
11.67
MS
9.33
PW
10.00
BC
11.67
JS
9.33
EB
10.00
AF
11.67
HL
9.33
E
10.00
AA
11.67
DG
9.33
DZ
10.33
VG
11.67
CS
9.33
AW
10.33
U
11.67
CQ
9.33
AE
10.33
SR
11.67
AP
9.33
A
10.33
QK
12.00
QX
9.67
SZ
10.33
PP
12.00
I
9.67
SS
10.33
PM
12.00
FZ
9.67
QT
10.33
PB
12.00
CJ
9.67
Q
10.33
MP
12.00
BH
9.67
M
10.33
GI
12.33
X
9.67
LT
10.33
FE
12.33
QP
9.67
IA
10.67
SF
12.33
QJ
9.67
FU
10.67
RM
12.33
DE
9.67
EL
10.67
QZ
13.00
K
9.67
CM
10.67
QU
13.00
DO
9.67
BK
10.67
LF
13.33
TD
9.67
BA
10.67
L
14.33
MQ
10.00
WA
10.67
KX
14.67
CO
10.00
W
10.67
FJ
15.67
BW
10.00
UN
10.67
CP
17.00
P
10.00
TP
10.67
CE
17.33
HU
10.00
TH
10.67
CA
20.00
X
BN
10.00
TA
10.67
BM
26.00
X
HI
11.00
UE
41.00
X
PQ
• = No data submitted TAG SYMBOLS IT = Above control limit
0 = Insufficient data x = Determined to be an outlier li = Below control limit
-------
34/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Cobalt-60
% responding labs
Frequency distribution
20-
10-
0*—r
-6
-r-
-4
T
T
Jik
¥ "¦
-2 0 +2 +4
Normalized deviation of the mean from the known value
—i—
*6
% responding labs
Frequency distribution
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 35 / 50
Cesium-134 Statistical Summary 219 Participants
The known value of this nuclide is 12.0 pCi/1 with an expected precision of 5.0; the control limits
are 3.3 to 20.7; the warning regions are 3.3 to 6.2 and 17.8 to 20.7
Statistic Respondents Non-outliers
Mean
11.83
Grand Avg 9.78
Std. Dev.
22.61
1.86
Variance
511.12
3.48
% Coef. of Var.
191.17
19.06
% deviation of mean from known value
-1.45
-18.48
Norm. dev. of mean from known value
-0.01
-1.19
Median
9.67
9.67
% deviation of median from known value
-19.44
-19.44
Norm. dev. of median from known value
-0.10
-1.25
-------
36/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average•
Normalized deviation
(grand-avg) (known) Tag
A
8.0
9.0
9.0
0.58
0.118
8.67
-0.39
-1.15
AA
8.0
8.0
8.0
0.00
0.000
8.00
-0.62
-1.39
AE
10.0
11.0
8.0
1.53
0.354
9.67
-0.04
-0.81
AF
10.0
9.0
10.0
0.58
0.118
9.67
-0.04
-0.81
AI
•
AJ
•
AK
9.0
11.0
10.0
1.00
0.236
10.00
0.08
-0.69
AL
14.0
13.0
15.0
1.00
0.236
14.00
1.46
0.69
AO
•
AP
13.0
12.0
10.0
1.53
0.354
11.67
0.65
-0.12
AR
•
AU
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
AW
10.0
11.0
10.0
0.58
0.118
10.33
0.19
-0.58
AZ
10.0
9.0
7.0
1.53
0.354
8.67
-0.39
-1.16
BA
9.0
10.0
10.0
0.58
0.118
9.67
-0.04
-0.81
BC
10.0
9.0
8.0
1.00
0.236
9.00
-0.27
-1.04
BG
•
BH
8.0
9.0
8.0
0.58
0.118
8.33
-0.50
-1.27
BK
10.0
10.0
11.0
0.58
0.118
10.33
0.19
-0.58
BL
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
BM
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
BN
20.0
20.0
19.0
0.58
0.118
19.67
3.42
2.66
BO
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
BS
•
BW
14.0
18.0
16.0
2.00
0.473
16.00
2.15
1.39
C
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
CA
9.0
10.0
11.0
1.00
0.236
10.00
0.08
-0.69
CE
10.0
10.0
9.0
0.58
0.118
9.67
-0.04
-0.81
CG
12.0
13.0
12.0
0.58
0.118
12.33
0.88
0.12
CJ
10.0
9.0
8.0
1.00
0.236
9.00
-0.27
-1.04
CK
8.0
10.0
10.0
1.15
0.236
9.33
-0.16
-0.92
CM
10.0
11.0
14.0
2.08
0.473
11.67
0.65
-0.12
CO
12.0
12.0
12.0
0.00
0.000
12.00
0.77
0.00
CP
10.0
10.0
11.0
0.58
0.118
10.33
0.19
-0.58
CQ
14.0
11.0
14.0
1.73
0.354
13.00
1.11
0.35
CS
11.0
11.0
11.0
0.00
0.000
11.00
0.42
-0.35
CX
9.0
10.0
9.0
0.58
0.118
9.33
-0.16
-0.92
D
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
DB
•
DD
8.0
8.0
8.0
0.00
0.000
8.00
-0.62
-1.39
DE
8.0
9.0
9.0
0.58
0.118
8.67
-0.39
-1.15
DG
8.0
8.0
9.0
0.58
0.118
8.33
-0.50
-1.27
DJ
DL
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
DM
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
• = No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
U = Below control limit
^ JJ
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
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
8.0
14.0
8.0
3.46
0.709
10.00
0.08
-0.69
DS
•
DT
9.0
10.0
10.0
0.58
0.118
9.67
-0.04
-0.81
DZ
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
E
10.0
11.0
10.0
0.58
0.118
10.33
0.19
-0.58
EB
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
EH
7.0
10.0
10.0
1.73
0.354
9.00
-0.27
-1.04
EL
10.0
10.0
9.0
0.58
0.118
9.67
-0.04
-0.81
EO
•
ER
•
EV
•
EX
13.0
12.0
12.0
0.58
0.118
12.33
0.88
0.12
FE
10.0
10.0
9.0
0.58
0.118
9.67
-0.04
-0.81
FF
•
FJ
11.0
9.0
10.0
1.00
0.236
10.00
0.08
-0.69
FL
•
FN
¦ •
FU
8.0
9.0
9.0
0.58
0.118
8.67
-0.39
-1.15
FZ
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
GE
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
GI
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
GQ
GT
•
GZ
•
HH
•
HI
29.0
29.0
25.0
2.31
0.473
27.67
6.20
5.43
X
HK
9.0
10.0
9.0
0.58
0.118
9.33
-0.16
-0.92
HL
11.0
11.0
11.0
0.00
0.000
11.00
0.42
-0.35
HN
. 0 ,
HP
11.0
8.0
9.0
1.53
0.354
9.33
-0.16
-0.92
HU
17.0
19.0
20.0
1.53
0.354
18.67
3.08
2.31
HX
0
I
10.0
8.0
9.0
1.00
0.236
9.00
-0.27
-1.04
IA
11.0
10.0
8.0
1.53
0.354
9.67
-0.04
-0.81
IC
9.0
10.0
10.0
0.58
0.118
9.67
-0.04
-0.81
ID
0
IE
0
n
0
IU
0
J
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
JE
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
JG
10.0
8.0
11.0
1.53
0.354
9.67
-0.04
-0.81
JH
0
JN
0¦
JQ
0
• =
0 3
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
H = Below control limit
-------
(
38/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
^
Cesi
um-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
JX
•
JY
11.0
8.0
10.0
1.53
0.354
9.67
-0.04
-0.81
K
9.0
8.0
9.0
0.58
0.118
8.67
-0.39
-1.15
KE
•
KF
•
KT
~
KX
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
KZ
•
L
9.0
12.0
11.0
1.53
0.354
10.67
0.31
-0.46
LA
•
LE
•
LF
11.0
10.0
10.0
0.58
0.118
10.33
0.19
-0.58
LG
•
LL
•
LM
•
LR
3.0
12.0
8.0
4.51
1.120
7.67
-0.73
-1.50
LT
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
M
9.0
9.0
8.0
0.58
0.118
8.67
-0.39
-1.15
MA
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
MN
•
MO
m
MP
12.0
13.0
12.0
0.58
0.118
12.33
0.88
0.12
MQ
13.0
11.0
11.0
1.15
0.236
11.67
0.65
-0.12
MS
10.0
10.0
9.0
0.58
0.118
9.67
-0.04
-0.81
MV
7.0
4.0
5.0
1.53
0.354
5.33
-1.54
-2.31
MY
9.0
10.0
9.0
0.58
0.118
9.33
-0.16
-0.92
N
•
NA
•
NO
o
NH
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
NJ
11.0
10.0
10.0
0.58
0.118
10.33
0.19
-0.58
NK
5.0
7.0
6.0
1.00
0.236
6.00
-1.31
-2.08
NO
•
NT
•
O
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
OF
•
OS
•
OX
•
OY
~
OZ
•
P
12.0
9.0
10.0
1.53
0.354
10.33
0.19
-0.58
PA
•
PB
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
PC
10.0
11.0
11.0
0.58
0.118
10.67
0.31
-0.46
No data submitted
TAG SYMBOLS
IT = Above control limit
u.
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
1 -y
-------
ft
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
39/50
Cesium-134
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Ijdb
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PG
•
PI
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
PM
8.0
7.0
7.0
0.-58
0.118
7.33
-0.85
-1.62
PP
10.0
7.0
8.0
1.53
0.354
8.33
-0.50
-1.27
PQ
261.0
297.0
274.0
23.00
9.446
274.00
9i;53
90.76
X
PR
PT
9.0
11.0
11.0
1.15
0.236
10.33
0.19
-0.58
PV
10.0
11.0
12.0
1.00
0.236
11.00
0.42
-0.35
PW
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
PY
•<
Q
9.0
9.0
9.0
0.00
0.000
y.uu
-0.27
-1.04
QC
•
QJ
11.0
12.0
8.0
2.08
0.473
10.33
0.19
-0.58
QK
11.0
10.0
11.0
0.58
0.118
10.67
0.31
-0.46
QL
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
QP
7.0
8.0
9.0
1.00
0.236
8.00
-0.62
-1.39
QQ
QT
10.0
10.0
8.0
1.15
0.236
9.33
-0.16
-0.92
QU
16.0
16.0
17.0
0.58
0.118
16.33
2.27
1.50
QW
•
QX
10.0
12.0
10.0
1.15
0.236
10.67
0.31
-0.46
QZ
9.0
8.0
8.0
0.58
0.118
8.33
-0.50
-1.27
RC
9.0
8.0
10.0
1.00
0.236
9.00
-0.27
p
1
RD
•
RE
RF
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
RG
RJ
%
RK
10.0
10.0
9.0
0.58
0.118
9.67
-0.04
-0.81
RL
RM
9.0
11.0
11.0
1.15
0.236
10.33
0.19
-0.58
RP
RR
•
RT
•
RV
9.0
7.0
4.0
2.52
0.591
6.67
-1.08
-1.85
RZ
7.0
7.0
8.0
0.58
0.118
7.33
-0.85
-1.62
S
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
sc
8.0
11.0
10.0
1.53
0.354
9.67
-0.04
-0.81
SD
7.0
8.0
8.0
0.58
0.118
7.67
-0.73
-1.50
SF
9.0
11.0
12.0
1.53
0.354
10.67
0.31
-0.46
SI
9.0
10.0
11.0
1.00
0.236
10.00
0.08
-0.69
SL
•
SM
7.0
7.0
9.0
1.15
0.236
7.67
-0.73
-1.50
SO
• <
SR
13.0
11.0
11.0
1.15
0.236
11.67
0.65
-0.12
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
in
IS)
Insufficient data
x =
Determined to be an outlier
•I! = Below control limit
>J
-------
(f =
40/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Cesium-134
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SS
8.0
10.0
9.0
1.00
0.236
9.00
-0.27
-1.04
ST
9.0
10.0
10.0
0.58
0.118
9.67
-0.04
-0.81
SW
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
SX
9.0
9.0
10.0
0.58
0.118
9.33
-0.16
-0.92
sz
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
T
9.0
9.0
8.0
0.58
0.118
8.67
-0.39
-1.15
TA
10.0
10.0
10.0
0.00
0.000
10.00
0.08
-0.69
TD
12.0
7.0
13.0
3.21
0.709
10.67
0.31
-0.46
TE
•
TG
10.0
9.0
10.0
0.58
0.118
9.67
-0.04
-0.81
TH
7.0
8.0
7.0
0.58
0.118
7.33
-0.85
-1.62
TI
8.0
9.0
9.0
0.58
0.118
8.67
-0.39
-1.15
TK
8.0
9.0
10.0
1.00
0.236
9.00
-0.27
-1.04
TL
•
TM
•
TN
9
TP
10.0
11.0
10.0
0.58
0.118
10.33
0.19
-0.58
TQ
9.0
7.0
8.0
1.00
0.236
8.00
-0.62
-1.39
TS
8.0
8.0
8.0
0.00
0.000
8.00
-0.62
-1.39
TV
•
TY
9
U
10.0
10.0
9.0
0.58
0.118
9.67
-0.04
-0.81
UA
•
UB
•
UC
•
UE
10.0
9.0
10.0
0.58
0.118
9.67
-0.04
-0.81
UG
•
UK
9
UN
9.0
10.0
8.0
1.00
0.236
9.00
-0.27
-1.04
UP
8.0
9.0
9.0
0.58
0.118
8.67
-0.39
-1.15
UQ
9
UW
10.0
11.0
11.0
0.58
0.118
10.67
0.31
-0.46
UY
12.0
12.0
9.0
1.73
0.354
11.00
0.42
-0.35
VA
9-
VC
9
VG
10.0
9.0
10.0
0.58
0.118
9.67
-0.04
-0.81
W
9.0
9.0
8.0
0.58
0.118
8.67
-0.39
-1.15
WA
9.0
9.0
9.0
0.00
0.000
9.00
-0.27
-1.04
X
10.0
9.0
8.0
1.00
0.236
9.00
-0.27
-1.04
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab
Average
Tag
Lab
5.33
6.00
6.67
MV
NK
RV
7.33
7.33
7.33
TH
RZ
PM
7.67
7.67
7.67
SM
SD
LR
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT s Above control limit
II = Below control limit
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
41/50
Cesium-134
Average Tag
Dt
Lab
ita sorted by Laboratory Averag
Average Tag Lab
Average
Tag
Lab
8.00
TS
9.33
PW
10.00
DM
8.00
TQ
9.33
MY
10.00
CA
8.00
QP
9.33
JS
10.00
BO
8.00
DD
9.33
JE
10.00
BM
8.00
AA
9.33
HP
10.00
AK
8.33
QZ
9.33
HK
10.33
TP
8.33
PP
9.33
GE
10.33
RM
8.33
OG
9.33
FZ
10.33
QJ
8.33
BH
9.33
DL
10.33
PT
8.67
W
9.33
CX
10.33
P
8.67
UP
9.33
CK
10.33
NJ
8.67
TI
9.33
BL
10.33
LF
8.67
T
9.33
AU
10.33
E
8.67
M
9.67
VG
10.33
CP
8.67
K
9.67
UE
10.33
BK
8.67
FU
9.67
U
10.33
AW
8.67
DE
9.67
TG
10.67
UW
8.67
AZ
9.67
ST
10.67
TD
8.67
A
9.67
SC
10.67
SF
9.00
X
9.67
RK
10.67
QX
9.00
WA
9.67
MS
10.67
QK
9.00
UN
9.67
JY
10.67
PC
9.00
TK
9.67
JG
10.67
L
9.00
SZ
9.67
IC
11.00
UY
9.00
sw
9.67
IA
11.00
PV
9.00
ss
9.67
FE
11.00
HL
9.00
RC
9.67
EL
11.00
CS
9.00
QL
9.67
DT
11.67
SR
9.00
Q
9.67
CE
11.67
MQ
9.00
PI
9.67
BA
11.67
CM
9.00
NH
9.67
AF
11.67
AP
9.00
MA
9.67
AE
12.00
CO
9.00
J
10.00
TA
12.33
MP
9.00
I
10.00
SI
12.33
EX
9.00
GI
10.00
S
12.33
CG
9.00
EH
10.00
RF
13.00
CQ
9.00
EB
10.00
PB
14.00
AL
9.00
D
10.00
O
16.00
BW
9.00
CJ
10.00
LT
16.33
QU
9.00
C
10.00
KX
18.67
HU
9.00
BC
10.00
FJ
19.67
BN
9.33
sx
10.00
DZ
27.67
X
HI
9.33
QT
10.00
DO
274.00
X
PQ
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT
li
s Above control limit
s Below control limit
-------
42/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Cesium-134
% responding labs
Frequency distribution
20-
10-
—r~
-4
I
7
¦6
-2 0 ~+2 +4
Normalized deviation of the mean from the known value
—r~
+6
% responding labs
Frequency distribution
20-
10-
T—
-4
—t—
-2
—r—
+4
-i—
+6
+2
Normalized deviation of the mean from the grand average
-------
,
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 43 / 50
Cesium-137 Statistical Summary ' 219 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 5.0; the control limits
are 1.3 to 18.7; the warning regions are 1.3 to 4.2 and 15.8 to 18.7
Statistic Respondents Non-outliers
Mean
11.13
Grand Avg 10.93
Std. Dev.
2.38
1.72
Variance
5.67
2.95
% Coef. of Var.
21.40
15.71
% deviation of mean from known value
11.30
9.34
Norm. dev. of mean from known value
0.47
0.54
Median
10.67
10.67
% deviation of median from known value
6.67
6.67
Norm. dev. of median from known value
0.28
0.39
-------
(,
^
44/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
[ Cesimn-137
X
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
10.0
10.0
11.0
0.58
0.118
10.33
-0.21
0.12
AA
9.0
9.0
8.0
0.58
0.118
8.67
-0.79
-0.46
AE
12.0
11.0
10.0
1.00
0.236
11.00
0.02
0.35
AF
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.35
AI
•
AJ
•
AK
10.0
10.0
12.0
1.15
0.236
10.67
-0.09
0.23
AL
14.0
18.0
13.0
2.65
0.591
15.00
1.41
1.73
AO
•
AP
13.0
14.0
15.0
1.00
0.236
14.00
1.06
1.39
AR
•
AU
12.0
11.0
12.0
0.58
0.118
11.67
0.25
0.58
AW
11.0
12.0
10.0
1.00
0.236
11.00
0.02
0.35
AZ
10.0
9.0
9.0
0.58
0.118
9.33
-0.55
-0.23
BA
13.0
15.0
18.0
2.52
0.591
15.33
1.52
1.85
BC
12.0
11.0
10.0
1.00
0.236
11.00
0.02
0.35
BG
•
BH
12.0
15.0
14.0
1.53
0.354
13.67
0.95
1.27
BK
11.0
10.0
11.0
0.58
0.118
10.67
-0.09
0.23
BL
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
BM
11.0
11.0
10.0
0.58
0.118
10.67
-0.09
0.23
BN
22.0
21.0
22.0
0.58
0.118
21.67
3.72
4.04
X
BO
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.35
BS
•
BW
16.0
19.0
18.0
1.53
0.354
17.67
2.33
2.66
C
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
CA
11.0
13.0
13.0
1.15
0.236
12.33
0.48
0.81
CE
11.0
12.0
11.0
0.58
0.118
11.33
0.14
0.46
CG
6.0
6.0
6.0
0.00
0.000
6.00
-1.71
-1.39
CJ
10.0
13.0
15.0
2.52
0.591
12.67
0.60
0.92
CK
12.0
8.0
10.0
2.00
0.473
10.00
-0.32
0.00
CM
13.0
12.0
11.0
1.00
0.236
12.00
0.37
0.69
CO
10.0
13.0
13.0
1.73
0.354
12.00
0.37
0.69
CP
10.0
11.0
10.0
0.58
0.118
10.33
-0.21
0.12
CQ
16.0
12.0
13.0
2.08
0.473
13.67
0.95
1.27
cs
13.0
13.0
14.0
0.58
0.118
13.33
0.83
1.15
cx
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.35
D
12.0
10.0
11.0
1.00
0.236
11.00
0.02
0.35
DB
~
OD
9.0
8.0
8.0
0.58
0.118
8.33
-0.90
-0.58
DE
13.0
13.0
13.0
0.00
0.000
13.00
0.72
1.04
DG
9.0
10.0
10.0
0.58
0.118
9.67
-0.44
-0.12
DJ
•
DL
11.0
11.0
10.0
0.58
0.118
10.67
-0.09
0.23
DM
12.0
12.0
12.0
0.00
0.000
12.00
0.37
0.69
• =
No data submitted
TAG SYMBOLS
ff = Above control limit
10-
Insufficient data
X s
Determined to be an outlier
= Below control limit
-i/
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 45/50
s
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
N
Normalized deviation
(grand-avg) (known) Tag
DO
12.0
13.0
9.0
2.08
0.473
11.33
0.14
0.46
DS
•
DT
11.0
9.0
10.0
1.00
0.236
10.00
-0.32
0.00
DZ
11.0
11.0
10.0
0.58
0.118
10.67
-0.09
0.23
E
10.0
10.0
12.0
1.15
0.236
10.67
-0.09
0.23
EB
11.0
12.0
11.0
0.58
0.118
11.33
0.14
0.46
EH
10.0
10.0
9.0
0.58
0.118
9.67
-0.44
-0.12
EL
10.0
11.0
11.0
0.58
0.118
10.67
-0.09
0.23
EO
•
EB
•
EV
•
EX
12.0
12.0
11.0
0.58
0.118
11.67
0.25
0.58
FE
11.0
12.0
11.0
0.58
0.118
11.33
0.14
0.46
FF
•
FJ
11.0
9.0
10.0
1.00
0.236
10.00
-0.32
0.00
FL
•
FN
FU
9.0
10.0
11.0
1.00
0.236
10.00
-0.32
0.00
FZ
11.0
13.0
10.0
1.53
0.354
11.33
0.14
0.46
GE
11.0
11.0
10.0
0.58
0.118
10.67
-0.09
0.23
GI
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
GQ
•
GT
•
GZ
«
HH
•
m
27.0
29.0
26.0
1.53
0.354
27;33
5.68
6,00
X
HK
11.0
10.0
10.0
0.58
0.118
10.33
-0.21
0.12
HL
12.0
12.0
12.0
0.00
0.000
12.00
0.37
0.69
BN
•
HP
12.0
9.0
11.0
1.53
0.354
10.67
-0.09
0.23
HU
17.0
16.0
17.0
0.58
0.118
16.67
1.99
2.31
HX
•
I
14.0
13.0
12.0
1.00
0.236
13.00
0.72
1.04
IA
13.0
15.0
10.0
2.52
0.591
12.67
0.60
0.92
IC
13.0
11.0
13.0
1.15
0.236
12.33
0.48
0.81
ID
•
IE
•
n
•
IU
•
J
10.0
10.0
11.0
0.58
0.118
10.33
-0.21
0.12
JE
11.0
9.0
12.0
1.53
0.354
10.67
-0.09
0.23
JG
15.0
10.0
13.0
2.52
0.591
12.67
0.60
0.92
JH
•
JN
•
JQ
•
• =
0 =
\S—
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T 3 Above control limit
•U s Below control limit
'J
-------
C(—
^
46/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Cesium-137
>
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
14.0
13.0
14.0
0.58
0.118
13.67
0.95
1.27
JX
•
JY
14.0
12.0
11.0
1.53
0.354
12.33
0.48
0.81
K
13.0
14.0
13.0
0.58
0.118
13.33
0.83
1.15
KE
•
KF
•
KT
~
KX
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.35
KZ
•
L
9.0
10.0
11.0
1.00
0.236
10.00
-0.32
0.00
LA
•
LE
•
LF
10.0
12.0
10.0
1.15
0.236
10.67
-0.09
0.23
LG
•
LL
LM
•
LR
6.0
9.0
10.0
2.08
0.473
8.33
-0.90
-0.58
LT
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
M
10.0
10.0
11.0
0.58
0.118
10.33
-0.21
0.12
MA
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
MN
MO
•
MP
10.0
10.0
11.0
0.58
0.118
10.33
-0.21
0.12
MQ
14.0
13.0
13.0
0.58
0.118
13.33
0.83
1.15
MS
10.0
13.0
12.0
1.53
0.354
11.67
0.25
0.58
MV
9.0
5.0
6.0
2.08
0.473
6.67
-1.48
-1.15
MY
12.0
11.0
12.0
0.58
0.118
11.67
0.25
0.58
N
•
NA
•
NG
•
NH
11.0
12.0
11.0
0.58
0.118
11.33
0.14
0.46
NJ
12.0
15.0
12.0
1.73
0.354
13.00
0.72
1.04
NK
12.0
8.0
6.0
3.06
0.709
8.67
-0.79
-0.46
NO
' •
NT
•
O
11.0
11.0
12.0
0.58
0.118
11.33
0.14
0.46
OF
•
OS
•
OX
~
OY
~
OZ
•
P
15.0
16.0
15.0
0.58
0.118
15.33
1.52
1.85
PA
•
PB
10.0
11.0
10.0
0.58
0.118
10.33
-0.21
0.12
PC
11.0
11.0
12.0
0.58
0.118
11.33
0.14
0.46
• =
No data submitted
TAG SYMBOLS
ft a Above control limit
lUf.
Insufficient data
X 3
Determined to be an outlier
11 = Below control limit
V
-------
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993 47 / 50
Cesium-137
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PU
•-
PI
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.35
PM
11.0
9.0
7.0
2.00
0.473
9.00
-0.67
-0.35
PP
11.0
12.0
9.0
1.53
0.354
10.67
-0.09
0.23
PQ
14.0
13.0
14.0
0.58
0.118
13.67
0.95
1.27
PR
•
PT
12.0
10.0
11.0
1.00
0.236
11.00
0.02
0.35
PV
8.0
12.0
8.0
2.31
0.473
9.33
-0.55
-0.23
PW
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
PY
•
Q
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
QC
•
QJ
10.0
9.0
13.0
2.08
0.473
10.67
-0.09
0.23
QK
12.0
12.0
12.0
0.00
0.000
12.00
0.37
0.69
QL
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
QP
7.0
13.0
13.0
3.46
0.709
11.00
0.02
0.35
QQ
• <
QT
11.0
10.0
10.0
0.58
0.118
10.33
-0.21
0.12
QU
9.0
10.0
11.0
1.00
0.236
10.00
-0.32
0.00
QW
QX
15.0
16.0
14.0
1.00
0.236
15.00
1.41
1.73
QZ
9.0
10.0
10.0
0.58
0.118
9.67
-0.44
-0.12
RC
11.0
10.0
12.0
1.00
0.236
11.00
0.02
0.35
RD
•
RE
RF
9.0
11.0
9.0
1.15
0.236
9.67
-0.44
-0.12
RG
•
RJ
•
RK
11.0
11.0
12.0
0.58
0.118
11.33
0.14
0.46
RL
RM
10.0
9.0
10.0
0.58
0.118
9.67
-0.44
-0.12
RP
RR
•
RT
•
RV
12.0
8.0
10.0
2.00
0.473
10.00
-0.32
0.00
RZ
8.0
9.0
9.0
0.58
0.118
8.67
-0.79
-0.46
S
10.0
11.0
11.0
0.58
0.118
10.67
-0.09
0.23
sc
11.0
10.0
9.0
1.00
0.236
10.00
-0.32
0.00
SD
10.0
10.0
9.0
0.58
0.118
9.67
-0.44
-0.12
SF
9.0
9.0
10.0
0.58
0.118
9.33
-0.55
-0.23
SI
7.0
12.0
11.0
2.65
0.591
10.00
-0.32
0.00
SL
•
SM
9.0
11.0
10.0
1.00
0.236
10.00
-0.32
0.00
SO
•
SR
7.0
8.0
9.0
1.00
0.236
8.00
-1.02
-0.69
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0S
Insufficient data
x =
Determined to be an outlier
U s Below control limit
•£/
-------
48/50
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
8.0
11.0
10.0
1.53
0.354
9.67
-0.44
-0.12
ST
10.0
11.0
11.0
0.58
0.118
10.67
-0.09
0.23
SW
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.35
SX
7.0
7.0
8.0
0.58
0.118
7.33
-1.25
-0.92
sz
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.35
T
9.0
9.0
9.0
0.00
0.000
9.00
-0.67
-0.35
TA
10.0
11.0
11.0
0.58
0.118
10.67
-0.09
0.23
TD
10.0
12.0
12.0
1.15
0.236
11.33
0.14
0.46
TE
•
TG
10.0
13.0
12.0
1.53
0.354
11.67
0.25
0.58
TH
9.0
10.0
9.0
0.58
0.118
9.33
-0.55
-0.23
TT
9.0
11.0
10.0
1.00
0.236
10.00
-0.32
0.00
TK
10.0
11.0
12.0
1.00
0.236
11.00
0.02
0.35
TL
•
TM
•
TN
•
TP
11.0
10.0
10.0
0.58
0.118
10.33
-0.21
0.12
TQ
11.0
9.0
8.0
1.53
0.354
9.33
-0.55
-0.23
TS
9.0
10.0
10.0
0.58
0.118
9.67
-0.44
-0.12
TV
•
TY
•
U
11.0
11.0
10.0
0.58
0.118
10.67
-0.09
0.23
UA
•
UB
•
UC
•
UE
11.0
12.0
13.0
1.00
0.236
12.00
0.37
0.69
UG
•
UK
•
UN
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
UP
10.0
10.0
11.0
0.58
0.118
10.33
-0.21
0.12
UQ
•
uw
13.0
11.0
12.0
1.00
0.236
12.00
0.37
0.69
UY
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.35
VA
•
VC
•
VG
11.0
11.0
10.0
0.58
0.118
10.67
-0.09
0.23
W
10.0
11.0
8.0
1.53
0.354
9.67
-0.44
-0.12
WA
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
X
10.0
10.0
10.0
0.00
0.000
10.00
-0.32
0.00
Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
6.00
CG
8. CO
SR
8.67
RZ
6.67
MV
8. S3
LR
8.67
NK
7.33
SX
8.33
DD
8.67
AA
• s No data submitted
TAG SYMBOLS
It
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
JJ
s Below control limit
-------
f(
^
EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
49/50
f
Cesium-137
>
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.00
T
10.33
M
11.33
NH
9.00
PM
10.33
J
11.33
FZ
9.33
TQ
10.33
HK
11.33
FE
9.33
TH
10.33
CP
11.33
EB
9.33
SF
10.33
A
11.33
DO
9.33
PV
10.67
VG
11.33
CE
9.33
AZ
10.67
U
11.67
TG
9.67
W
10.67
TA
11.67
MY
9.67
TS
10.67
ST
11.67
MS
9.67
ss
10.67
S
11.67
EX
9.67
SD
10.67
QJ
11.67
AU
9.67
RM
10.67
PP
12.00
uw
9.67
RF
10.67
LF
12.00
UE
9.67
QZ
10.67
JE
12.00
QK
9.67
EH
10.67
HP
12.00
HL
9.67
DG
10.67
GE
12.00
DM
10.00
X
10.67
EL
12.00
CO
10.00
WA
10.67
E
12.00
CM
10.00
UN
10.67
DZ
12.33
JY
10.00
TI
10.67
DL
12.33
IC
10.00
SM
10.67
BM
12.33
CA
10.00
SI
10.67
BK
12.67
JG
10.00
sc
10.67
AK
12.67
IA
10.00
RV
11.00
UY
12.67
CJ
10.00
QU
11.00
TK
13.00
NJ
10.00
QL
11.00
SZ
13.00
I
10.00
Q
11.00
sw
13.00
DE
10.00
PW
11.00
RC
13.33
MQ
10.00
MA
11.00
QP
13.33
K
10.00
LT
11.00
PT
13.33
CS
10.00
L
11.00
PI
13.67
PQ
10.00
GI
11.00
KX
13.67
JS
10.00
FU
11.00
D
13.67
CQ
10.00
FJ
11.00
CX
13.67
BH
10.00
DT
11.00
BO
14.00
AP
10.00
CK
11.00
BC
15.00
ox
10.00
C
11.00
AW
15.00
AL
10.00
BL
11.00
AF
15.33
P
10.33
UP
11.00
AE
15.33
BA
10.33
TP
11.33
TD
16.67
HU
10.33
QT
11.33
RK
17.67
BW
10.33
PB
11.33
PC
21.67
X
BN
10.33
MP
11.33
O
27.33
X
HI
• s No data submitted
TAG SYMBOLS
It S
Above control limit
0 = Insufficient data
x = Determined to be an outlier
Below control limit
V
-------
50/50 EMSL-LV Performance Evaluation: Blind-B, 19-Oct-1993
Cesium-137
% responding labs Frequency distribution
20-
10..
- ¦ -
0J—i 1 1 1 1 ¦"¥-
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
20-
10-
i i i r i i ......
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
United States tuvironrr.oi ^ c-. ..-jj/244
Environmental Protection Systems Laboraiuiy " October 1993
Agency P.O Box 93478
Las Vegas NV 89193-3478
Research and Development
Gross Alpha-Beta in Water
Performance
Evaluation Study
A Statistical Evaluation of
the October 29,1993 Data
9311-0138nnC44
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
October 29, 1993
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; October 29, 1993.
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 docLment.
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
^
1/20
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After t.he 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.
-------
^
2/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
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 arid 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, 29-Oct-1993 3/20
Gross Alpha Statistical Summary 262 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
79(30.2 %) Failed to respond ,
1 (0.4 %) Outliers •'
43(16.4 %) Out of control
but not an outlier
Statistic
• 84(32.1 %) Within all limits
Respondents
*- 55(21.0 %) 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
14.20
4.90
23.98
34.50
-29.02
-1.18
14.00
-30.00
-1.23
Grand Avg 14.08
4.64
21.56
32.98
-29.61
-1.28
13.83
-30.83
-1.33
48(26.2 %) More than 3 norm. S.D.,
51(27.9 %) Between 2 and 3 norm. S.D.'
. 35(19.1 %) Within 1 norm. S.D.
of known value
*49(26.8 %) Between 1 and 2 norm. S.D.
-------
4/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
15.0
14.0
12.0
1.53
0.354
13.67
-0.14
-2.19
AA
13.0
14.0
11.0
1.53
0.354
12.67
-0.49
-2.54
AE
10.0
10.0
9.0
0.58
0.118
9.67
-1.53
-3.58 U
AF
14.0
16.0
14.0
1.15
0.236
14.67
0.20
-1.85
AI
•
AJ
•
AK
•
AL
18.0
13.0
15.0
2.52
0.591
15.33
0.43
-1.62
AN
13.0
14.0
11.0
1.53
0.354
12.67
-0.49
-2.54
AO
15.0
18.0
14.0
2.08
0.473
15.67
0.55
-1.50
AP
13.0
12.0
14.0
1.00
0.236
13.00
-0.37
-2.42
AR
20.0
16.0
17.0
2.08
0.473
17.67
1.24
-0.81
AU
14.0
13.0
14.0
0.58
0.118
13.67
-0.14
-2.19
AW
12.0
11.0
13.0
1.00
0.236
12.00
-0.72
-2.77
AY
•
AZ
22.0
24.0
25.0
1.53
0.354
23.67
3.32
1.27
BA
14.0
14.0
14.0
0.00
0.000
14.00
-0.03
-2.08
BB
15.0
14.0
14.0
0.58
0.118
14.33
0.09
-1.96
BC
27.0
28.0
29.0
1.00
0.236
28.00
4.82
2.77
BG
11.0
8.0
8.0
1.73
0.354
9.00
-1.76
-3.81 li
BH
16.0
14.0
16.0
1.15
0.236
15.33
0.43
-1.62
BI
10.0
12.0
13.0
1.53
0.354
11.67
-0.84
-2.89
BK
19.0
18.0
19.0
0.58
0.118
18.67
1.59
-0.46
BL
18.0
19.0
16.0
1.53
0.354
17.67
1.24
-0.81
BM
15.0
15.0
15.0
0.00
0.000
15.00
0.32
-1.73
BN
13.0
16.0
13.0
1.73
0.354
14.00
-0.03
-2.08
BO
10.0
10.0
11.0
0.58
0.118
10.33
-1.30
-3.35
BW
•
C
19.0
18.0
19.0
0.58
0.118
18.67
1.59
-0.46
CA
16.0
21.0
18.0
2.52
0.591
18.33
1.47
-0.58
CE
12.0
12.0
11.0
0.58
0.118
11.67
-0.84
-2.89
CG
12.0
13.0
14.0
1.00
0.236
13.00
-0.37
-2.42
CJ
18.0
22.0
21.0
2.08
0.473
20.33
2.17
0.12
CK
15.0
16.0
15.0
0.58
0.118
15.33
0.43
-1.62
CO
17.0
17.0
14.0
1.73
0.354
16.00
0.67
-1.39
CP
8.0
10.0
9.0
1.00
0.236
9.00
-1.76
-3.81 li
CQ
14.0
15.0
16.0
1.00
0.236
15.00
0.32
-1.73
CS
18.0
15.0
16.0
1.53
0.354
16.33
0.78
-1.27
CX
13.0
11.0
12.0
1.00
0.236
12.00
-0.72
-2.77
D
17.0
18.0
17.0
0.58
0.118
17.33
1.13
-0.92
DB
26.0
23.0
23.0
1.73
0.354
24.00
3.44
1.39
DD
12.0
15.0
12.0
1.73
0.354
13.00
-0.37
-2.42
DE
26.0
26.0
26.0
0.00
0.000
26.00
4.13
2.08
DG
•
DH
20.0
20.0
18.0
1.15
0.236
19.33
1.82
-0.23
• s No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x = Determined to be an outlier 11 s Below control limit
^ —'J
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993 5/20
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DJ
6.0
5.0
5.0
0.58
0.118
5.33
-3.03
-5.08
11
DM
•
DO
21.0
16.0
19.0
2.52
0.591
18.67
1.59
-0.46
DP
•
DR
•
DS
•
DT
20.0
20.0
19.0
0.58
0.118
19.67
1.94
-0.12
DX
•
DY
•
DZ
16.0
15.0
17.0
1.00
0.236
16.00
0.67
-1.39
E
17.0
15.0
14.0
1.53
0.354
15.33
0.43
-1.62
EA
•
EB
13.0
15.0
19.0
3.06
0.709
15.67
0.55
-1.50
EH
20.0
16.0
15.0
2.65
0.591
17.00
1.01
-1.04
EL
•
EN
10.0
12.0
11.0
1.00
0.236
11.00
-1.07
-3.12
EO
•
ER
15.0
15.0
15.0
0.00
0.000
15.00
0.32
-1.73
ES
14.0
15.0
17.0
1.53
0.354
15.33
0.43
-1.62
EV
14.0
11.0
11.0
1.73
0.354
12.00
-0.72
-2.77
EW
•
FE
11.0
13.0
12.0
1.00
0.236
12.00
-0.72
-2.77
FF
•
FJ
11.0
10.0
14.0
2.08
0.473
11.67
-0.84
-2.89
FK
7.0
6.0
7.0
0.58
0.118
6.67
-2.57
-4.62
li
FL
12.0
12.0
12.0
0.00
0.000
12.00
-0.72
-2.77
FN
11.0
10.0
13.0
1.53
0.354
11.33
-0.95
-3.00
FP
10.0
12.0
10.0
1.15
0.236
10.67
-1.18
-3.23
li
FU
*
FZ
12.0
7.0
14.0
3.61
0.827
11.00
-1.07
-3.12
GE
• -
GJ
11.0
10.0
6.0
2.65
0.591
9.00
-1.76
-3.81
GO
8.0
9.0
10.0
1.00
0.236
9.00
-1.76
-3.81
Ji
GQ
14.0
15.0
16.0
1.00
0.236
15.00
0.32
-1.73
GT
17.0
10.0
10.0
4.04
0.827
12.33
-0.60
-2.66
GZ
19.0
20.0
17.0
1.53
0.354
18.67
1.59
-0.46
HE
26.0
27.0
27.0
0.58
0.118
26.67
4.36
2.31
HH
•
HI
9.0
8.0
8.0.
0.58
0.118
8.33
-1.99
-4.04
HK
•
HL
12.0
10.0
12.0
1.15
0.236
11.33
-0.95
-3.00
HN
18.0
19.0
18.0
0.58
0.118
18.33
1.47
-0.58
HP
12.0
15.0
14.0
1.53
0.354
13.67
-0.14
-2.19
HU
15.0
15.0
15.0
0.00
0.000
15.00
0.32
-1.73
HX
•
in i»
• Q
No data submitted
Insufficient data
X 3
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
U = Below control limit
¦ - — . -¦ -- . . — -¦ Jj
-------
6/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
s
Normalized deviation
(grand-avg) (known) Tag
I
17.0
18.0
15.0
1.53
0.354
16.67
0.90
i
Ol
IC
15.0
13.0
13.0
1.15
0.236
13.67
-0.14
-2.19
IE
14.0
15.0
14.0
0.58
0.118
14.33
0.09
-1.96
n
•
IU
•
j
15.0
14.0
14.0
0.58
0.118
14.33
0.09
-1.96
JE
JG
13.0
13.0
14.0
0.58
0.118
13.33
-0.26
-2.31
JH
•
JM
12.0
13.0
14.0
1.00
0.236
13.00
-0.37
-2.42
JN
•
JP
15.0
15.0
15.0
0.00
0.000
15.00
0.32
-1.73
JQ
13.0
13.0
14.0
0.58
0.118
13.33
-0.26
-2.31
JS
12.0
19.0
15.0
3.51
0.827
15.33
0.43
-1.62
JY
15.0
13.0
15.0
1.15
0.236
14.33
0.09
-1.96
K
11.0
13.0
15.0
2.00
0.473
13.00
-0.37
-2.42
KG
•
KE
11.0
16.0
12.0
2.65
0.591
13.00
-0.37
-2.42
KF
V
KH
12.0
13.0
15.0
1.53
0.354
13.33
-0.26
-2.31
KT
20.0
19.0
20.0
0.58
0.118
19.67
1.94
-0.12
KX
15.0
20.0
20.0
2.89
0.591
18.33
1.47
-0.58
KZ
12.0
13.0
13.0
0.58
0.118
12.67
-0.49
-2.54
L
12.0
11.0
12.0
0.58
0.118
11.67
-0.84
-2.89
LA
•
LE
7.0
10.0
13.0
3.00
0.709
10.00
-1.41
-3.46
LF
17.0
15.0
13.0
2.00
0.473
15.00
0.32
-1.73
LG
•
LL
•'
LM
•-
LR
5.0
4.0
4.0
0.58
0.118
4.33
-3.38
-5.43
II
LS
*<
LT
15.0
16.0
17.0
1.00
0.236
16.00
0.67
-1.39
LZ
M
11.0
12.0
11.0
0.58
0.118
11.33
-0.95
-3.00
MA
•
MN
0
MQ
8.0
15.0
15.0
4.04
0.827
12.67
-0.49
-2.54
MS
6.0
9.0
8.0
1.53
0.354
7.67
-2.22
-4.27
MV
• -
MX
10.0
10.0
9.0
0.58
0.118
9.67
-1.53
-3.58
MY
8.0
7.0
8.0
0.58
0.118
7.67
-2.22
-4.27
u
N
12.0
17.0
20.0
4.04
0.945
16.33
0.78
-1.27
NA
10.0
11.0
13.0
1.53
0.354
11.33
-0.95
-3.00
NB
15.0
11.0
10.0
2.65
0.591
12.00
-0.72
-2.77
• =
I 0 3
Vi
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
U = Below control limit
V
-------
ar—
EMSLrLV Performance Evaluation:
^
Gross Alpha-Beta in Water, 29-Oct-1993 7 / 20
Gross Alpha
\
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NE
36:0
34.0
37.0
1.53
0.354
35.67
7.48
5.43
X
NF
• -
NG
6.0
7.0
8.0
1.00
0.236
7.00
-2.45
-4.50
NH
10.0
16.0
18.0
4.16
0.945
14.67
0.20
-1.85
NI
•
NJ
11.0
12.0
14.0
1.53
0.354
12.33
-0.60
-2.66
NK
8.0
6.0
6.0
1.15
0.236
6.67
-2.57
-4.62
a
NO
15.0
16.0
17.0
1.00
0.236
16.00
0.67
-1.39
NP
*
NT
19.0
19.0
19.0
0.00
0.000
19.00
1.70
-0.35
O
18.0
19.0
19.0
0.58
0.118
18.67
1.59
-0.46
OA
20.0
18.0
22.0
2.00
0.473
20.00
2.05
0.00
OB
10.0
16.0
18.0
4.16
0.945
14.67
0.20
-1.85
OF
15.0
17.0
18.0
1.53
0.354
16.67
0.90
-1.15
OM
•
OS
15.0
15.0
15.0
0.00
0.000
15.00
0.32
-1.73
OT
OX
m
OY
24.0
28.0
33.0
4.51
1.120
28.33
4.94
2.89
P
14.0
12.0
11.0
1.53
0.354
12.33
-0.60
-2.66
PA
•
PB
18.0
18.0
18.0
0.00
0.000
18.00
1.36
-0.69
PC
20.0
23.0
24.0
2.08
0.473
22.33
2.86
0.81
PD
•
PE
•
PG
12.0
13.0
14.0
1.00
0.236
13.00
-0.37
-2.42
PM
13.0
14.0
14.0
0.58
0.118
13.67
-0.14
-2.19
PP
•
PQ
15.0
14.0
15.0
0.58
0.118
14.67
0.20
-1.85
PR
21.0
19.0
18.0
1.53
0.354
19.33
1.82
-0.23
PT
•
PV
18.0
19.0
19.0
0.58
0.118
18.67
1.59
-0.46
Q
23.0
25.0
21.0
2.00
0.473
23.00
3.09
1.04
QA
•
QB
•
QC
7.0
11.0
10.0
2.08
0.473
9.33
-1.64
-3.70
u
QI
4.0
3.0
3.0
0.58
0.118
3.33
-3.72
-5.77
u
QJ
11.0
6.0
15.0
4.51
1.120
10.67
-1.18
-3.23
a
QK
•
QM
5.0
4.0
4.0
0.58
0.118
4.33
-3.38
-5.43
u
QP
4.0
4.0
7.0
1.73
0.354
5.00
-3.14
-5.20
u
QQ
•
QT
22.0
21.0
17.0
2.65
0.591
20.00
2.05
0.00
QU
22.0
25.0
29.0
3.51
0.827
25.33
3.90
1.85
QW
17.0
22.0
19.0
2.52
0.591
19.33
1.82
-0.23
• s No data submitted
TAG SYMBOLS
IT = Above control limit
0 s Insufficient data
v-
x =
Determined to be an outlier
U = Below control limit
>j
-------
8/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma "
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
QX
7.0
7.0
7.0
0.00
0.000
7.00
-2.45
-4.50
u
QZ
17.0
17.0
18.0
0.58
0.118
17.33
1.13
-0.92
R
22.0
22.0
22.0
0.00
0.000
22.00
2.74
0.69
RB
13.0
11.0
11.0
1.15
0.236
11.67
-0.84
-2.89
RC
12.0
11.0
13.0
1.00
0.236
12.00
-0.72
-2.77
RD
16.0
14.0
15.0
1.00
0.236
15.00
0.32
-1.73
RE
17.0
17.0
19.0
1.15
0.236
17.67
1.24
-0.81
RF
10.0
11.0
10.0
0.58
0.118
10.33
-1.30
-3.35
u
RG
10.0
11.0
10.0
0.58
0.118
10.33
-1.30
-3.35
u
RH
6.0
4.0
3.0
1.53
0.354
4.33
-3.38
-5.43
u
RI
14.0
12.0
13.0
1.00
0.236
13.00
-0.37
-2.42
RJ
•
RL
~
RM
15.0
15.0
16.0
0.58
0.118
15.33
0.43
-1.62
RQ
9"
RR
9
RT
9
RV
9
RW
20.0
19.0
19.0
0.58
0.118
19.33
1.82
-0.23
KX
RZ
9
S
16.0
14.0
15.0
1.00
0.236
15.00
0.32
-1.73
SA
9
sc
10.0
12.0
11.0
1.00
0.236
11.00
-1.07
-3.12
11
SD
15.0
14.0
16.0
1.00
0.236
15.00
0.32
-1.73
SF
19.0
17.0
16.0
1.53
0.354
17.33
1.13
-0.92
SG
9
SI
13.0
10.0
9.0
2.08
0.473
10.67
-1.18
-3.23
ii
SL
•
SM
13.0
12.0
12.0
0.58
0.118
12.33
-0.60
-2.66
SN
11.0
13.0
14.0
1.53
0.354
12.67
-0.49
-2.54
SO
6
SR
13.0
16.0
13.0
1.73
0.354
14.00
-0.03
-2.08
SS
11.0
15.0
12.0
2.08
0.473
12.67
-0.49
-2.54
ST
11.0
10.0
11.0
0.58
0.118
10.67
-1.18
-3.23
U
su
9.0
7.0
12.0
2.52
0.591
9.33
-1.64
-3.70
u
sw
4.0
7.0
4.0
1.73
0.354
5.00
-3.14
-5.20
11
sx
19.0
19.0
19.0
0.00
0.000
19.00
1.70
-0.35
sz
12.0
12.0
13.0
0.58
0.118
12.33
-0.60
-2.66
T
19.0
17.0
17.0
1.15
0.236
17.67
1.24
-0.81
TA
16.0
24.0
25.0
4.93
1.120
21.67
2.63
0.58
TC
•
ID
4.0
8.0
5.0
2.08
0.473
5.67
-2.91
-4.97
u
TE
11.0
11.0
11.0
0.00
0.000
11.00
-1.07
-3.12
11
TG
14.0
14.0
11.0
1.73
0.354
13.00
-0.37
-2.42
• s No data submitted TAG SYMBOLS It = Above control limit
0 = Insufficient data x = Determined to be an outlier 11 s Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993 9 / 20
-s\
Gross Alpha
La|) Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Taj?
TH
18.0
19.0
19.0
0.58
0.118
18.67
1.59
-0.46
TI
15.0
15.0
16.0
0.58
0.118
15.33
0.43
-1.62
TK
16.0
14.0
13.0
1.53
0.354
14.33
0.09
-1.96
TL
11.0
11.0
10.0
0.58
0.118
10.67
-1.18
-3.23
TM
•
TN
12.0
11.0
13.0
1.00
0.236
12.00
-0.72
-2.77
TO
2.0
2.0
3.0
0.58
0.118
2.33
-4.07
-6.12
TP
15.0
15.0
15.0
0.00
0.000
15.00
0.32
-1.73
TQ
13.0
12.0
14.0
1.00
0.236
13.00
-0.37
-2.42
TS
•
TT
•
TV
•
TW
8.0
9.0
14.0
3.21
0.709
10.33
-1.30
-3.35
TY
20.0
20.0
19.0
0.58
0.118
19.67
1.94
-0.12
U
15.0
12.0
16.0
2.08
0.473
14.33
0.09
-1.96
UA
16.0
15.0
17.0
1.00
0.236
16.00
0.67
-1.39
UB
«
UC
•
UE
16.0
16.0
16.0
0.00
0.000
16.00
0.67
-1.39
UG
18.0
19.0
19.0
0.58
0.118
18.67
1.59
-0.46
UI
14.0
16.0
13.0
1.53
0.354
14.33
0.09
-1.96
UJ
•
UL
•
UN
10.0
11.0
10.0
0.58
0.118
10.33
-1.30
-3.35
li
UP
12.0
12.0
14.0
1.15
0.236
12.67
-0.49
-2.54
UQ
11.0
10.0
11.0
0.58
0.118
10.67
-1.18
-3.23
u
UW
•
UY
5.0
6.0
6.0
0.58
0.118
5.67
-2.91
-4.97
UZ
8.0
4.0
19.0
7.77
2.470
10.33
-1.30
-3.35
VA
•
vc
•
VG
12.0
13.0
11.0
1.00
0.236
12.00
-0.72
-2.77
W
18.0
15.0
15.0
1.73
0.354
16.00
0.67
-1.39
WA
•
X
Y
12.0
11.0
7.0
2.65
0.591
10.00
-1.41
-3.46
A
z
22.0
19.0
22.0
1.73
0.354
21.00
2.40
0.35
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.33
TO
5.00
U
SW
6.67
Jl
NK
3.33
u
Ql
5.00
U
QP
6.67
II
FK
4.33
u
RH
5.33
DJ
7.00
U
QX
4.33
li
QM
5.67
li
UY
7.00
U
NG
4.33
LR
5.67
TD
7.67
II
MY
• s No data submitted
0 ~ Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
= Below control limit
-------
10/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
V
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
7.67
u
MS
12.00
CX
14.67
NH
8.33
u
HI
12.00
AW
14.67
AF
9.00
u
GO
12.33
SZ
15.00
TP
9.00
u
GJ
12.33
SM
15.00
SD
9.00
u
CP
12.33
P
15.00
S
9.00
u
BG
12.33
NJ
15.00
RD
9.33
u
su
12.33
GT
15.00
OS
9.33
u
QC
12.67
UP
15.00
LF
9.67
#
MX
12.67
ss
15.00
JP
9.67
u
AE
12.67
SN
15.00
HU
10.00
u
X
12.67
MQ
15.00
GQ
10.00
LE
12.67
KZ
15.00
ER
10.33
UZ
12.67
AN
15.00
CQ
10.33
u
UN
12.67
AA
15.00
BM
10.33
u
TW
13.00
TQ
15.33
TI
10.33
u
RG
13.00
TG
15.33
RM
10.33
4
RF
13.00
RI
15.33
JS
10.33
BO
13.00
PG
15.33
ES
10.67
u
UQ
13.00
KE
15.33
E
10.67
11
TL
13.00
K
15.33
CK
10.67
u
ST
13.00
JM
15.33
BH
10.67
11
SI
13.00
DD
15.33
AL
10.67
u
QJ
13.00
CG
15.67
EB
10.67
u
FP
13.00
AP
15.67
AO
11.00
11
TE
13.33
KH
16.00
W
11.00
11
SC
13.33
JQ
16.00
UE
11.00
11
FZ
13.33
JG
16.00
UA
11.00
11
EN
13.67
PM
16.00
NO
11.33
NA
13.67
IC
16.00
LT
11.33
M
13.67
HP
16.00
DZ
11.33
HL
13.67
AU
16.00
CO
11.33
FN
13.67
A
16.33
N
11.67
RB
14.00
SR
16.33
CS
11.67
L
14.00
BN
16.67
OF
11.67
FJ
14.00
BA
16.67
I
11.67
CE
14.33
UI
17.00
EH
11.67
BI
14.33
U
17.33
SF
12.00
VG
14.33
TK
17.33
QZ
12.00
TN
14.33
JY
17.33
D
12.00
RC
14.33
J
17.67
T
12.00
NB
14.33
IE
17.67
RE
12.00
FL
14.33
BB
17.67
BL
12.00
FE
14.67
PQ
17.67
AR
12.00
EV
14.67
OB
18.00
PB
• = No data submitted
TAG SYMBOLS
ir
s Above control limit
0 = Insufficient data
x = Determined to be an outlier
n
= Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993 11/20
Gross Alpha
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
18.33
KX
19.00
NT
21.67
TA
18.33
HN
19.33
RW
22.00
R
18.33
CA
19.33
QW
22.33
PC
18.67
UG
19.33
PR
23.00
Q
18.67
TH
19.33
DH
23.67
AZ
18.67
PV
19.67
TY
24.00
DB
18.67
O
19.67
KT
25.33
QU
18.67
GZ
19.67
DT
26.00
DE
18.67
DO
20.00
QT
26.67
HE
18.67
C
20.00
OA
28.00
BC
18.67
BK
20.33
CJ
28.33
OY
19.00
sx
21.00
Z
35.67
X
NE
% responding labs
Frequency distribution
.... ¦¦¦ ¦ ¦-¦¦iiiiiiii
¦T ¦ "i
-2 0 +2
Normalized deviation of the mean from the known value
+6
responding labs Frequency distribution
10-
|
0 , | j— T '"t
•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 U s Below control limit
\S —'J
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993 12/20
Gross Beta Statistical Summary 262 Participants
The known value of this nuclide is 15.0 pCi/l 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
20.19
Grand Avg 17.01
Std. Dev.
28.23
4.80
Variance
797.14
23.03
% Coef. of Var.
139.81
28.22
% deviation of mean from known value
34.62
13.38
Norm. dev. of mean from known value
0.18
0.42
Median
16.67
16.67
% deviation of median from known value
11.11
11.11
Norm. dev. of median from known value
0.06
0.35
-------
—
13/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
^
Gross Beta
X
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand- avg)
(known) Tag
A
12.0
11.0
12.0
0.58
0.118
11.67
-1.85
-1.15
AA
14.0
14.0
17.0
1.73
0.354
15.00
-0.70
0.00
AE
15.0
15.0
14.0
0.58
0.118
14.67
-0.81
-0.12
AF
20.0
15.0
19.0
2.65
0.591
18.00
0.34
1.04
AI
•
AJ
•
AK
•
AL
11.0
17.0
16.0
3.21
0.709
14.67
-0.81
-0.12
AN
18.0
18.0
18.0
0.00
0.000
18.00
0.34
1.04
AO
17.0
20.0
23.0
3.00
0.709
20.00
1.04
1.73
AP
16.0
17.0
16.0
0.58
0.118
16.33
-0.23
0.46
AR
19.0
17.0
19.0
1.15
0.236
18.33
0.46
1.15
AU
18.0
16.0
18.0
1.15
0.236
17.33
0.11
0.81
AW
19.0
18.0
18.0
0.58
0.118
18.33
0.46
1.15
AY
•
AZ
14.0
14.0
14.0
0.00
0.000
14.00
-1.04
-0.35
BA
16.0
16.0
16.0
0.00
0.000
16.00
-0.35
0.35
BB
19.0
19.0
18.0
0.58
0.118
18.67
0.57
1.27
BC
11.0
6.0
11.0
2.89
0.591
9.33
-2.66
-1.96
BG
18.0
17.0
15.0
1.53
0.354
16.67
-0.12
0.58
BH
15.0
16.0
17.0
1.00
0.236
16.00
-0.35
0.35
BI
19.0
17.0
17.0
1.15
0.236
17.67
0.23
0.92
BK
18.0
15.0
20.0
2.52
0.591
17.67
0.23
0.92
BL
18.0
15.0
17.0
1.53
0.354
16.67
-0.12
0.58
BM
15.0
16.0
16.0
0.58
0.118
15.67
-0.46
0.23
BN
20.0
14.0
18.0
3.06
0.709
17.33
0.11
0.81
BO
14.0
14.0
15.0
0.58
0.118
14.33
-0.93
-0.23
BW
4.0
3.0
3.0
0.58
0.118
3.33
-4.74
-4.04
II
C
18.0
17.0
21.0
2.08
0.473
18.67
0.57
1.27
CA
14.0
14.0
13.0
0.58
0.118
13.67
-1.16
-0.46
CE
17.0
16.0
15.0
1.00
0.236
16.00
-0.35
0.35
CG
14.0
19.0
18.0
2.65
0.591
17.00
0.00
0.69
CJ
18.0
14.0
15.0
2.08
0.473
15.67
-0.46
0.23
CK
21.0
20.0
25.0
2.65
0.591
22.00
1.73
2.42
CO
12.0
16.0
13.0
2.08
0.473
13.67
-1.16
-0.46
CP
18.0
16.0
17.0
1.00
0.236
17.00
0.00
0.69
CQ
16.0
17.0
18.0
1.00
0.236
17.00
0.00
0.69
CS
14.0
16.0
14.0
1.15
0.236
14.67
-0.81
-0.12
CX
14.0
16.0
16.0
1.15
0.236
15.33
-0.58
0.12
D
18.0
18.0
18.0
0.00
0.000
18.00
0.34
1.04
DB
25.0
24.0
23.0
1.00
0.236
24.00
2.42
3.12
It
DD
20.0
19.0
18.0
1.00
0.236
19.00
0.69
1.39
DE
21.0
21.0
21.0
0.00
0.000
21.00
1.38
2.08
DG
19.0
12.0
14.0
3.61
0.827
15.00
-0.70
0.00
DH
16.0
17.0
18.0
1.00
0.236
17.00
0.00
0.69
• =
No data submitted
TAG SYMBOLS
It s Above control limit
Insufficient data
x =
Determined to be an outlier
U = Below control limit
JJ
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993 14 / 20
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DJ
21.0
17.0
19.0
2.00
0.473
19.00
0.69
1.39
DM
DO
17.0
16.0
17.0
0.58
0.118
16.67
-0.12
0.58
DP
•
DR
17.0
17.0
16.0
0.58
0.118
16.67
-0.12
0.58
DS
~
DT
21.0
15.0
13.0
4.16
0.945
16.33
-0.23
0.46
DX
•
DY
•
DZ
22.0
22.0
22.0
0.00
0.000
22.00
1.73
2.42
E
19.0
17.0
19.0
1.15
0.236
18.33
0.46
1.15
EA
•
EB
18.0
17.0
18.0
0.58
0.118
17.67
0.23
0.92
EH
17.0
18.0
16.0
1.00
0.236
17.00
0.00
0.69
EL
16.0
19.0
17.0
1.53
0.354
17.33
0.11
0.81
EN
330i0
330,0
333.0
1;73
0,354
331.00
108; 77
109.47
X
EO
•
ER
•
ES
18.0
19.0
19.0
0.58
0.118
18.67
0.57
1.27
EV
16.0
16.0
15.0
0.58
0.118
15.67
-0.46
0.23
EW
•
FE
15.0
14.0
14.0
0.58
0.118
14.33
-0.93
-0.23
FF
•
FJ
29.0
31.0
29.0
1.15
0.236
29.67
4.39
5.08
ft
FK
18.0
18.0
18.0
0.00
0.000
18.00
0.34
1.04
FL
8.0
7.0
8.0
0.58
0.118
7.67
-3.24
-2.54
FN
15.0
15.0
16.0
0.58
0.118
15.33
-0.58
0.12
FP
13.0
15.0
15.0
1.15
0.236
14.33
-0.93
-0.23
FU
FZ
8.0
9.0
13.0
2.65
0.591
10.00
-2.43
-1.73
GE
14.0
15.0
16.0
1.00
0.236
15.00
-0.70
0.00
GJ
4.0
3.0
4.0
0.58
0.118
3.67
-4.62
-3.93
GO
26.0
22.0
23.0
2.08
0.473
23.67
2.31
3.00
GQ
15.0
15.0
16.0
0.58
0.118
15.33
-0.58
0.12
GT
14.0
14.0
14.0
0.00
0.000
14.00
-1.04
-0.35
GZ
6.0
5.0
7.0
1.00
0.236
6.00
-3.81
-3.12
n
HE
20.0
20.0
20.0
0.00
0.000
20.00
1.04
1.73
HH
•
m
15.0
16.0
16.0-
0.58
0.118
15.67
-0.46
0.23
HE
•
HL
25.0
22.0
23.0
1.53
0.354
23.33
2.19
2.89
HN
•
HP
18.0
15.0
14.0
2.08
0.473
15.67
-0.46
0.23
HU
27.0
26.0
26.0
0.58
0.118
26.33
3.23
3.93
tr
HX
•
• =
0 3
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
H = Below control limit
-------
15/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
¦
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
N
Normalized deviation
(grand-avg) (known) Tag
I
13.0
15.0
16.0
1.53
0.354
14.67
-0.81
-0.12
IC
22.0
23.0
23.0
0.58
0.118
22.67
1.96
2.66
IE
23.0
23.0
26.0
1.73
0.354
24.00
2.42
3.12
ft
n
•
ru
18.0
18.0
17.0
0.58
0.118
17.67
0.23
0.92
j
19.0
18.0
18.0
0.58
0.118
18.33
0.46
1.15
JE
~
JG
28.0
29.0
28.0
0.58
0.118
28.33
3.92
4.62
IT
JH
•
JM
20.0
20.0
23.0
1.73
0.354
21.00
1.38
2.08
JN
•
JP
19.0
18.0
17.0
1.00
0.236
18.00
0.34
1.04
JQ
~
JS
16.0
19.0
20.0
2.08
0.473
18.33
0.46
1.15
JY
14.0
16.0
16.0
1.15
0.236
15.33
-0.58
0.12
K
18.0
16.0
16.0
1.15
0.236
16.67
-0.12
0.58
KC
•
KE
15.0
19.0
16.0
2.08
0.473
16.67
-0.12
0.58
KF
• ¦
KH
17.0
16.0
18.0
1.00
0.236
17.00
0.00
0.69
KT
14.0
11.0
18.0
3.51
0.827
14.33
-0.93
-0.23
KX
20.0
22.0
19.0
1.53
0.354
20.33
1.15
1.85
KZ
15.0
15.0
16.0
0.58
0.118
15.33
-0.58
0.12
L
19.0
20.0
19.0
0.58
0.118
19.33
0.81
1.50
LA
•
LE
17.0
18.0
18.0
0.58
0.118
17.67
0.23
0.92
LF
20.0
17.0
18.0
1.53
0.354
18.33
0.46
1.15
LG
•
LL
•
LM
•
LR
10.0
16.0
14.0
3.06
0.709
13.33
-1.27
-0.58
LS
*
LT
17.0
17.0
18.0
0.58
0.118
17.33
0.11
0.81
LZ
•
M
21.0
20.0
21.0
0.58
0.118
20.67
1.27
1.96
MA
16.0
16.0
14.0
1.15
0.236
15.33
-0.58
0.12
MN
•
MQ
29.0
25.0
23.0
3.06
0.709
25.67
3.00
3.70
ft
MS
15.0
15.0
15.0
0.00
0.000
15.00
-0.70
0.00
MV
*
MX
19.0
16.0
23.0
3.51
0.827
19.33
0.81
1.50
MY
29.0
31.0
36.0
3.61
0.827
32.00
5.19
5.89
ft
N
16.0
14.0
18.0
2.00
0.473
16.00
-0.35
0.35
NA
31.0
32.0
33.0
1.00
0.236
32.00
5.19
5.89
ft
NB
15.0
14.0
15.0
0.58
0.118
14.67
-0.81
-0.12
• 3
0 =
^
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
U = Below control limit
jj
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993 16/20
f
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
NE
14.0
15.0
16.0
1.00
0.236
15.00
-0.70
0.00
NF
•
NG
13.0
13.0
13.0
0.00
0.000
13.00
-1.39
-0.69
NH
14.0
16.0
20.0
3.06
0.709
16.67
-0.12
0.58
NI
•
NJ
10.0
13.0
11.0
1.53
0.354
11.33
-1.97
-1.27
NK
11.0
9.0
7.0
2.00
0.473
9.00
-2.77
-2.08
NO
18.0
19.0
20.0
1.00
0.236
19.00
0.69
1.39
NP
• '
NT
16.0
18.0
17.0
1.00
0.236
17.00
0.00
0.69
O
17.0
18.0
17.0
0.58
0.118
17.33
0.11
0.81
OA
17.0
15.0
15.0
1.15
0.236
15.67
-0.46
0.23
OB
21.0
23.0
19.0
2.00
0.473
21.00
1.38
2.08
OF
16.0
16.0
17.0
0.58
0.118
16.33
-0.23
0.46
OM
•
OS
21.0
29.0
20.0
4.93
1.120
23.33
2.19
2.89
OT
12.0
13.0
12.0
0.58
0.118
12.33
-1.62
-0.92
OX
•
OT
34.0
38.0
40.0
6.11
1.795
39.33
7.73
8)43
X
P
16.0
18.0
13.0
2.52
0.591
15.67
-0.46
0.23
PA
•
PB
18.0
18.0
18.0
0.00
0.000
18.00
0.34
1.04
PC
13.0
15.0
14.0
1.00
0.236
14.00
-1.04
-0.35
PD
•
PE
•
PG
13.0
15.0
16.0
1.53
0.354
14.67
-0.81
-0.12
PM
19.0
19.0
18.0
0.58
0.118
18.67
0.57
1.27
PP
•
PQ
16.0
17.0
16.0
0.58
0.118
16.33
-0.23
0.46
PR
16.0
15.0
15.0
0.58
0.118
15.33
-0.58
0.12
PT
•
PV
11.0
12.0
13.0
1.00
0.236
12.00
-1.73
-1.04
Q
17.0
19.0
20.0
1.53
0.354
18.67
0.57
1.27
QA
•
QB
•
QC
21.0
22.0
23.0
1.00
0.236
22.00
1.73
2.42
QI
9.0
8.0
8.0
0.58
0.118
8.33
3.00
-2.31
QJ
249.0
239.0
224.0
12.58
4.721
237.33
76.32
77.02
X
QK
18.0
18.0
19.0
0.58
0.118
18.33
0.46
1.15
QM
20.0
15.0
14.0
3.21
0.709
16.33
-0.23
0.46
QP
16.0
13.0
13.0
1.73
0.354
14.00
-1.04
-0.35
QQ
0
QT
46.0
86.0
24.0
30.89
12.821
51.67
12;01
12.70
X
QU
29.0
32.0
36.0
3.51
0.827
32.33
5.31
6.00
IT
QW
31.0
29.0
25.0
3.06
0.709
28.33
3.92
4.62
IT
III >11
•
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
¦U = Below control limit
jj
-------
/^===
17/20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
3xper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
4X
3.0
4.0
4.0
0.58
0.118
3.67
-4.62
-3.93
a
QZ
15.0
15.0
16.0
0.58
0.118
15.33
-0.58
0.12
R
21.0
20.0
22.0
1.00
0.236
21.00
1.38
2.08
RB
14.0
12.0
12.0
1.15
0.236
12.67
-1.50
-0.81
RC
18.0
19.0
18.0
0.58
0.118
18.33
0.46
1.15
RD
15.0
15.0
14.0
0.58
0.118
14.67
-0.81
-0.12
RE
12.0
10.0
10.0
1.15
0.236
10.67
-2.20
-1.50
RF
16.0
18.0
16.0
1.15
0.236
16.67
i
©
i—*
to
0.58
RG
12.0
11.0
10.0
1.00
0.236
11.00
-2.08
-1.39
RH
11.0
14.0
10.0
2.08
0.473
11.67
-1.85
-1.15
RI
12.0
14.0
13.0
1.00
0.236
13.00
-1.39
-0.69
RJ
•
RL
•
RM
17.0
19.0
17.0
1.15
0.236
17.67
0.23
0.92
RQ
•
RR
RT
RV
RW
23.0
22.0
24.0
1.00
0.236
23.00
2.08
2.77
RX
•
RZ
•
S
16.0
17.0
17.0
0.58
0.118
16.67
-0.12
0.58
SA
•
sc
15.0
17.0
16.0
1.00
0.236
16.00
-0.35
0.35
SD
17.0
17.0
18.0
0.58
0.118
17.33
0.11
0.81
SF
16.0
16.0
17.0
0.58
0.118
16.33
-0.23
0.46
SG
*
SI
13.0
16.0
20.0
3.51
0.827
16.33
-0.23
0.46
SL
• -
SM
16.0
15.0
15.0
0.58
0.118
15.33
-0.58
0.12
SN
15.0
15.0
13.0
1.15
0.236
14.33
-0.93
-0.23
SO
*
SR
17.0
20.0
17.0
1.73
0.354
18.00
0.34
1.04
SS
16.0
14.0
16.0
1.15
0.236
15.33
-0.58
0.12
ST
14.0
17.0
16.0
1.53
0.354
15.67
-0.46
0.23
su
7.0
12.0
14.0
3.61
0.827
11.00
-2.08
-1.39
sw
18.0
13.0
24.0
5.51
1.570
18.33
0.46
1.15
sx
19.0
14.0
15.0
2.65
0.591
16.00
-0.35
0.35
sz
20.0
22.0
21.0
1.00
0.236
21.00
1.38
2.08
T
15.0
17.0
17.0
1.15
0.236
16.33
-0.23
0.46
TA
14.0
28.0
35.0
10.69
3.821
25.67
3.00
3.70
tr
TC
•
TD
31.0
40.0
32.0
4.93
1.120
34.33
6.00
6.70
X
TE
7.0
9.0
8.0
1.00
0.236
8.00
-3.12
-2.42
TG
11.0
14.0
12.0
1.53
0.354
12.33
-1.62
-0.92
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
Insufficient data
X 5
Determined to be an outlier
JJ = Below control limit
-y
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993 18/20
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TH
24.0
21.0
20.0
2.08
0.473
21.67
1.61
2.31
TI
17.0
17.0
17.0
0.00
0.000
17.00
0.00
0.69
TK
24.0
20.0
22.0
2.00
0.473
22.00
1.73
2.42
TL
14.0
15.0
15.0
0.58
0.118
14.67
-0.81
-0.12
TM
•
TN
18.0
18.0
18.0
0.00
0.000
18.00
0.34
1.04
TO
17.0
16.0
16.0
0.58
0.118
16.33
-0.23
0.46
TP
19.0
19.0
19.0
0.00
0.000
19.00
0.69
1.39
TQ
15.0
12.0
16.0
2.08
0.473
14.33
-0.93
-0.23
TS
«
TT
m
TV
•
TW
13.0
16.0
18.0
2.52
0.591
15.67
-0.46
0.23
TY
16.0
16.0
16.0
0.00
0.000
16.00
-0.35
0.35
U
17.0
15.0
15.0
1.15
0.236
15.67
-0.46
0.23
UA
26.0
27.0
25.0
1.00
0.236
26.00
3.12
3.81 IT
UB
•
UC
•
UE
22.0
23.0
22.0
0.58
0.118
22.33
1.85
2.54
UG
21.0
20.0
20.0
0.58
0.118
20.33
1.15
1.85
UI
30.0
34.0
31.0
2.08
0.473
31.67
5.08
5.77 ft
UJ
•
UL
•
UN
26.0
28.0
14.0
7.57
2.245
22.67
1.96
2.66
UP
14.0
15.0
15.0
0.58
0.118
14.67
-0.81
-0.12
UQ
20.0
18.0
19.0
1.00
0.236
19.00
0.69
1.39
UW
•
UY
20.0
24.0
15.0
4.51
1.120
19.67
0.92
1.62
UZ
15.0
6.0
40.0
17.62
6.746
20.33
1.15
1.85
VA
•
vc
1.0
1.0
2.0
0.58
0.118
1.33
-5.43
-4.73
VG
15.0
13.0
11.0
2.00
0.473
13.00
-1.39
-0.69
W
14.0
13.0
13.0
0.58
0.118
13.33
-1.27
-0.58
WA
X
16.0
16.0
18.0
1.15
0.236
16.67
-0.12
0.58
Y
14.0
15.0
14.0
0.58
0.118
14.33
-0.93
-0.23
Z
20.0
19.0
19.0
0.58
0.118
19.33
0.81
1.50
Ell
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
1.33
JJ
VC
7.67
FL
10.00
FZ
3.33
U
BW
8.00
TE
10.67
RE
3.67
u
ox
8.33
QI
11.00
SU
3.67
II
GJ
9.00
NK
11.00
RG
6.00
11
GZ
9.33
BC
11.33
NJ
• s No data submitted
TAG SYMBOLS
ft
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
u
2 Below control limit
-------
^~19 / 20 EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water,
29-Oct-1993
^
Gross Beta
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
11.67
RH
15.33
JY
17.00
DH
11.67
A
15.33
GQ
17.00
CQ
12.00
PV
15.33
FN
17.00
CP
12.33
TG
15.33
CX
17.00
CG
12.33
OT
15.67
u
17.33
SD
12.67
RB
15.67
TW
17.33
O
13.00
VG
15.67
ST
17.33
LT
13.00
RI
15.67
P
17.33
EL
13.00
NG
15.67
OA
17.33
BN
13.33
W
15.67
HP
17.33
AU
13.33
LR
15.67
HI
17.67
RM
13.67
CO
15.67
EV
17.67
LE
13.67
CA
15.67
CJ
17.67
IU
14.00
QP
15.67
BM
17.67
EB
14.00
PC
16.00
TY
17.67
BK
14.00
GT
16.00
sx
17.67
BI
14.00
AZ
16.00
SC
18.00
TN
14.33
Y
16.00
N
18.00
SR
14.33
TQ
16.00
CE
18.00
PB
14.33
SN
16.00
BH
18.00
JP
14.33
KT
16.00
BA
18.00
FK
14.33
FP
16.33
TO
18.00
D
14.33
FE
16.33
T
18.00
AN
14.33
BO
16.33
SI
18.00
AF
14.67
UP
16.33
SF
18.33
SW
14.67
TL
16.33
QM
18.33
RC
14.67
RD
16.33
PQ
18.33
QK
14.67
PG
16.33
OF
18.33
LF
14.67
NB
16.33
DT
18.33
JS
14.67
I
16.33
AP
18.33
J
14.67
CS
16.67
X
18.33
E
14.67
AL
16.67
S
18.33
AW
14.67
AE
16.67
RF
18.33
AR
15.00
NE
16.67
NH
18.67
Q
15.00
MS
16.67
KE
18.67
PM
15.00
GE
16.67
K
18.67
ES
15.00
DG
16.67
DR
18.67
C
15.00
AA
16.67
DO
18.67
BB
15.33
SS
16.67
BL
19.00
UQ
15.33
SM
16.67
BG
19.00
TP
15.33
QZ
17.00
TI
19.00
NO
15.33
PR
17.00
NT
19.00
DJ
15.33
MA
17.00
KH
19.00
DD
15.33
KZ
17.00
EH
19.33
Z
• s No data submitted
TAG SYMBOLS
ft
s Above control limit
0 = Insufficient data
v-
x = Determined to be an outlier
J1
= Below control limit
-------
EMSL-LV Performance Evaluation: Gross Alpha-Beta in Water, 29-Oct-1993 20 / 20
Gross Beta
Data sorted by
Average Tag Lab Average
Laboratory Average
Tag Lab
Average
Tag
Lab
19.33
19.33
19.67
20.00
20.00
20.33
20.33
20.33
20.67
21.00
21.00
21.00
21.00
21.00
MX
L
UY
HE
AO
UZ
UG
KX
M
sz
R
OB
JM
DE
21.67
22.00
22.00
22.00
22.00
22.33
22.67
22.67
23.00
23.33
23.33
23.67
24.00
24.00
25.67
It
ft
ft
TH
TK
QC
DZ
CK
UE
UN
IC
RW
OS
HL
GO
IE
DB
TA
25.67
26.00
26.33
28.33
28.33
29.67
31.67
32.00
32.00
32.33
34.33
39.33
51.67
237.33
331.00
ft
ft
ft
ft
ft
ft
ft
ft
ft
ft
x
x
X
X
X
MQ
UA
HU
QW
JG
FJ
UI
NA
MY
QU
TD
OY
QT
QJ
EN
% responding labs
Frequency distribution
10-1
0
f—¦¥¦
I-
-4
-2 0 +2
Normalized deviation of the mean, from the known value
¦T-
+4
¦T*
+6
% responding labs Frequency distribution
)0J
-lllllflll.
... —T- T——i—
-4 -2 0 +2 +4 +4
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS ft = Above control limit
[ 0 = Insufficient data x = Determined to be an outlier U = Below control limit
-------
United States ,.r'>-c.^2-o
Environmental Protection C.yji.aior> November 1993
Agency P.O Box 93478
Las Vegas NV 89193-3478
Research and Development
Tritium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the November 5,1993 Data
-------
Tritium in Water
Performance Evaluation Study
November 5, 1993
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; November 5, 1993.
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: Tritium in Water, 5-Nov-1993
1 /10
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 sectqr 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, 5-Nov-1993
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 etTor of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
-------
EMSL-LV Performance Evaluation: Tritium in Water, 5-Nov-1993 3 /10
\
Tritium Statistical Summary 220 Participants
The known value of this nuclide is 7398.0 pCi/1 with an expected precision of 740.0; the control limits
sure 6114.1 to 8681.9; the warning regions are 6114.1 to 6541.4 and 8254.6 to 8681.9
Statistic Respondents Non-outliers
Mean
7017.15
Grand Avg 7215.65
Std. Dev.
1320.54
574.68
Variance
1743826.64
330256.18
% Coef. of Var.
18.82
7.96
% deviation of mean from known value
-5.15
-2.46
Norm. dev. of mean from known value
-0.29
-0.32
Median
7209.00
7259.50
% deviation of median from known value
-2.55
-1.87
Norm. dev. of median from known value
-0.14
-0.24
-------
ft
4/10 EMSL-LV Performance Evaluation: Tritium in Water,
5-Nov-1993
;
Tritium
>1
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average •
(grand-avg)
(known) Tae
A
6277.0
6086.0
5894.0
191.50
0.306
6085.67
-2.64
-3.07
a
AB
7543.0
7387.0
7166.0
189.43
0.301
7365.33
0.35
-0.08
AE
7490.0
7600.0
7530.0
55.71
0.088
7540.00
0.76
0.33
AF
7044.0
7133.0
7046.0
50.83
0.071
7074.33
-0.33
-0.76
AH
7290.0
7610.0
7410.0
161.66
0.255
7436.67
0.52
0.09
AI
6760.0
6870.0
6820.0
55.06
0.088
6816.67
-0.93
-1.36
AJ
6009.0
6007.0
6067.0
34.06
0.048
6027.67
-2.78
-3.21
n
AK
7197.0
7288.0
7028.0
131.95
0.208
7171.00
-0.10
-0.53
AP
7084.0
6952.0
7087.0
77.09
0.108
7041.00
-0.41
-0.84
AU
7400.0
7400.0
7400.0
0.00
0.000
7400.00
0.43
0.00
AW
7092.0
6803.0
7103.0
170.13
0.239
6999.33
-0.51
-0.93
AY
6799.0
6978.0
6929.0
92.49
0.143
6902.00
-0.73
-1.16
AZ
6122.0
5176.0
5228.0
53.02
0.085
5176.33
-4.78
-5.20
X
BA
7439.0
7442.0
7430.0
6.52
0.010
7437.00
0.52
0.09
BB
7612.0
7704.0
7783.0
85.58
0.136
7699.67
1.13
0.71
BC
7480.0
7520.0
7490.0
20.77
0.032
7496.67
0.66
0.23
BG
7200.0
7000.0
7200.0
115.47
0.160
7133.33
-0.19
-0.62
BL
7618.0
7330.0
7530.0
147.59
0.230
7492.67
0.65
0.22
BM
7600.0
7500.0
7320.0
.141.89
0.223
7473.33
0.60
0.18
BO
6900.0
7090.0
7190.0
147.32
0.231
7060.00
-0.36
-0.79
BW
7000.0
6200.0
6600.0
400.00
0.639
6600.00
-1.44
-1.87
C
7468.0
7507.0
7352.0
80.65
0.124
7442.33
0.53
0.10
CA
7320.0
7480.0
7130.0
175.21
0.279
7310.00
0.22
-0.21
CC
•
CE
7160.0
7210.0
7970.0
453.91
0.647
7446.67
0.54
0.11
CG
8485.0
8676.0
8001.0
347.94
0.539
8387.33
2.74
2.32
CJ
6800.0
7000.0
6900.0
100.00
0.160
6900.00
-0.74
-1.17
CK
7217.0
7579.0
7140.0
234.42
0.350
7312.00
0.23
-0.20
CM
7307.0
7216.0
7283.0
47.15
0.073
7268.67
0.12
-0.30
CO
6710.0
6270.0
6680.0
245.83
0.351
6553.33
-1.55
-1.98
CP
6786.0
6788.0
6787.0
1.58
0.002
6787.00
-1.00
-1.43
CQ
7470.0
7370.0
7540.0
85.46
0.136
7460.00
0.57
0.15
CS
7640.0
7600.0
7370.0
145.71
0.216
7536.67
0.75
0.32
CX
7263.0
9337.0
4902.0
2219.05
5.838
7167.33
-0.11
-0.54
D
6949.0
6894.0
7029.0
67.86
0.108
6957.33
-0.60
-1.03
DD
7610.0
7240.0
7570.0
203.07
0.295
7473.33
0.60
0.18
DE
7340.0
7393.0
7408.0
35.72
0.054
7380.33
0.39
-0.04
DG
4280.0
44200
4360.0
70.00
0.112
4350.00
-6.71
-7.13
X
DH
8259.0
7800.0
7778.0
271.58
0.384
7945.67
1.71
1.28
DI
6990.0
6700.0
7050.0
187.18
0.279
6913.33
-0.71
-1.13
DJ
7925.0
8744.0
7619.0
581.67
0.898
8096.00
2.06
1.63
DL
7016.0
7157.0
7078.0
70.68
0.113
7083.67
-0.31
-0.74
DM
6850.0
6800.0
6638.0
110.84
0.169
6762.67
-1.06
-1.49
DR
•
DT
•
• —
No data submitted
TAG SYMBOLS
ft = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U = Below control limit
-------
EMSLrLV Performance Evaluation: Tritium in Water, 5-Nov-1993 5/10
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Ayerage
Normalized deviation
(grand-avg) (known) Tag
DY
• ^
E
7266.0
7397.0
7463.0
100.28
0.157
7375.33
0.37
-0.05
EA
8200.0
8240.0
8110.0
66.57
0.104
8183.33
2.26
1.84
EB
7130.0
7360.0
7600.0
235.01
0.375
7363.33
0.35
-0.08
EH
6370.0
6030.0
6490.0
238.61
0.367
6296.67
-2.15
-2.58
EL
7446.0
6723.0
7324.0
387.05
0.577
7164.33
-0.12
-0.55
EN
6709.0
5578.0
5885.0
584.86
0.903
6057.33
-2.71
-3.14
EW
6410.0
6313.0
6321.0
53.85
0.077
6348.00
-2.03
-2.46
EX
5993.0
6161.0
6167.0
98.76
0.139
6107.00
-2.59
-3.02
li
FA
FB
•
FE
7180.0
7010.0
6830.0
175.04
0.279
7006.67
-0.49
-0.92
FJ
6468.0
4528.0
4916.0
1026.55
2.045
5304.00
-4.47
-4.90
FK
7203.0
7012.0
7078.0
97.01
0.152
7097.67
-0.28
-0.70
FL
7036.0
6797.0
6799.0
137.42
0.191
6877.33
-0.79
-1.22
FU
5630.0
6250.0
6650.0
513.94
0.814
6176.67
-2.43
-2.86
FZ
8500.0
9000.0
9200.0
360.56
0.559
8900.00
3.94
3.52
tr
GE
7157.0
7078.0
7016.0
70.68
0.113
7083.67
-0.31
-0.74
GO
7613.0
8246.0
8194.0
351.41
0.505
8017.67
1.88
1.45
GQ
7140.0
7100.0
7060.0
40.00
0.064
7100.00
-0.27
-0.70
HI
6665.0
6604.0
6514.0
75.97
0.121
6594.33
-1.45
-1.88
HJ
7870.0
7570.0
8150.0
290.06
0.463
7863.33
1.52
1.09
HK
7662.0
7254.0
7338.0
215.45
0.326
7418.00
0.47
0.05
HP
7630.0
7370.0
7570.0
136.14
0.208
7523.33
0.72
0.29
HR
7752.0
7712.0
7562.0
100.16
0.152
7675.33
1.08
0.65
HU
7890.0
7826.0
7900.0
40.20
0.059
7872.00
1.54
1.11
HX
I
6504.0
6563.0
6437.0
63.03
0.101
6501.33
-1.67
-2.10
IA
•
IC
n
7389.0
7091.0
7241.0
149.00
0.238
7240.33
0.06
-0.37
IU
7703.0
7730.0
8054.0
195.33
0.280
7829.00
1.44
1.01
«
J
7450.0
7500.0
7495.0
27.49
0.040
7481.67
0.62
0.20
JE
7592.0
7592.0
7592.0
0.00
0.000
7592.00
0.88
0.45
JG
«'
JI
7345.0
7352.0
7333.0
9.76
0.015
7343.33
0.30
-0.13
JK
7437.0
7577.0
7647.0
106.94
0.168
7553.67
0.79
0.36
JM
7065.0
7117.0
6877.0
126.25
0.192
7019.67
-0.46
-0.89
JN
•
JP
7533.0
7468.0
7369.0
82.60
0.131
7456.67
0.56
0.14
JR
6700.0
6580.0
6550.0
79.39
0.120
6610.00
-1.42
-1.84
JS
7300.0
7300.0
6600.0
404.15
0.559
7066.67
-0.35
-0.78
JY
6710.0
6810.0
7260.0
292.98
0.439
6926.67
-0.68
-1.10
K
6884.0
6080.0
5839.0
547.19
0.834
6267.67
-2.22
-2.65
KH
7533.0
7487.0
7378.0
79.61
0.124
7466.00
0.59
0.16
• ~
[0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft — Above control limit
It = Below control limit
— —'J
-------
6/10
EMSL-LV Performance Evaluation: Tritium in Water,
5-Nov-1993
Tritium
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
KM
7336.0
7660.0
7850.0
259.89
0.410
7615.33
0.94
0.51
KX
7020.0
7070.0
6990.0
40.46
0.064
7026.67
-0.44
-0.87
L
7565.0
7557.0
7662.0
58.42
0.084
7594.67
0.89
0.46
LA
•
LE
8590.0
7910.0
8230.0
340.20
0.543
8243.33
2.41
1.98
LF
7400.0
7700.0
7400.0
173.21
0.239
7500.00
0.67
0.24
LM
•
LR
7070.0
7138.0
7089.0
35.14
0.054
7099.00
-0.27
-0.70
LS
•
LT
6510.0
6563.0
6725.0
112.01
0.172
6599.33
-1.44
-1.87
M
6530.0
6540.0
6510.0
15.28
0.024
6526.67
-1.61
-2.04
MA
6784.0
6760.0
6679.0
55.01
0.084
6741.00
-1.11
-1.54
ML
8400.0
8200.0
8100.0
152.75
0.239
8233.33
2.38
1.96
MN
•
MQ
7940.0
7790.0
7600.0
170.39
0.271
7776.67
1.31
0.89
MS
7800.0
7390.0
6880.0
460.90
0.734
7356.67
0.33
-0.10
MT
6954.0
6956.0
6899.0
32.37
0.045
6936.33
-0.65
-1.08
MV
- •'
N
7188.0
6984.0
7230.0
131.58
0.196
7134.00
-0.19
-0.62
NB
6482.0
6580.0
6464.0
62.44
0.093
6508.67
-1.65
-2.08
NH
NL
•
NJ
6946.0
6514.0
6649.0
221.01
0.345
6703.00
-1.20
-1.63
NO
*,
NP
7236.0
9375.0
8306.0
1069.50
2.347
8305.67
2.55
2.12
O
7974.0
8072.0
8088.0
61.70
0.091
8044.67
1.94
1.51
OA
6800.0
6800.0
7000.0
115.47
0.160
6866.67
-0.82
-1.24
OK
•-:
OL
8369.0
7404.0
8071.0
494.12
0.770
7948.00
1.71
1.29
OM
•
OT
7.0
6,0
7:0
0.58
0.001
6.07
-16.87
-17.30
*
OX
7844.0
7703.0
7515.0
165.07
0.263
7687.33
1.10
0.68
P
7483.0
7388.0
7801.0
216.31
0.330
7557.33
0.80
0.37
PB
7335.0
7147.0
7275.0
96.02
0.150
7252.33
0.09
-0.34
PC
7349.0
7378.0
6788.0
332.58
0.471
7171.67
-0.10
-0.53
PD
, •
PE
6340.0
6470.0
6860.0
270.62
0.415
6556.67
-1.54
-1.97
PI
7433.0
7583.0
7638.0
106.09
0.164
7551.33
0.79
0.36
PJ
11418-0
11798.0
11999.0
295.05
0.464
11738.33
10i59
10.16
X
PM
7482.0
7595.0
7411.0
92.78
0.147
7496.00
0.66
0.23
PP
6941.0
6903.0
6884.0
29.07
0.045
6909.33
-0.72
-1.14
PQ
7561.0
7240.0
7318.0
167.41
0.256
7373.00
0.37
-0.06
PT
6531.0
6520.0
6512.0
9.51
0.015
6521.00
-1.63
-2.05
PU
ft .
PV
6760.0
7370.0
7010.0
306.66
0.487
7046.67
-0.40
-0.82
• = No data submitted TAG SYMBOLS ft = Above control limit
0 ~ Insufficient data x = Determined to be an outlier It = Below control limit
-------
(r
EMSL-LV Performance Evaluation: Tritium in Water,
5-Nov-1993
7/10
Tritium
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
FY
Q
7960.0
8077.0
8330.0
189.12
0.295
8122.33
2.12
1.70
QA
5018.0
5441.0
4652.0
394.84
0.630
5037.00
-5,10
*5.53
X
QB
7506.0
7593.0
8096.0
318.50
0.471
7731.67
1.21
0.78
QC
6275.0
6318.0
6262.0
29.30
0.045
6285.00
-2.18
-2.61
QD
7336.0
7379.0
7196.0
95.71
0.146
7303.67
0.21
-0.22
QI
7270.0
6867.0
7018.0
203.60
0.322
7051.67
-0.38
-0.81
QJ
7100.0
6790.0
6800.0
176.16
0.247
6896.67
-0.75
-1.17
QK
6909.0
6876.0
6856.0
26.83
0.042
6880.33
-0.78
-1.21
QL
6272.0
6560.0
6400.0
144.30
0.230
6410.67
-1.88
-2.31
QM
•
QP
8360.0
7850.0
8270.0
272.22
0.407
8160.00
2.21
1.78
QQ
•
QT
6871.0
6785.0
6965.0
90.04
0.144
6873.67
-0.80
-1.23
QU
8323.0
7044.0
7314.0
674.15
1.040
7560.33
0.81
0.38
QW
7910.0
7522.0
7044.0
433.78
0.691
7492.00
0.65
0.22
QX
7706.0
7916.0
7798.0
105.29
0.168
7806.67
1.38
0.96
QZ
7713.0
7818.0
7706.0
62.77
0.089
7745.67
1.24
0.81
R
7408.0
7442.0
7507.0
50.32
0.079
7452.33
0.55
0.13
RB
5102.0
5407.0
5444.0
187.69
0.273
5317.67
-4.44
-4.87
u
RC
530.0
6310
.530:0
0:58
0,001
530,33
-15.65
-16.07
X
RF
5118.0
4766.0
4739.0
211.45
0.303
4874.33
-5.48
-5,91
X
RH
6306.0
6195.0
6483.0
145.26
0.230
6328.00
-2.08
-2.50
RL
RM
6699.0
6522.0
6633.0
89.45
0.141
6618.00
-1.40
-1.83
RO
6846.0
7222.0
7095.0
191.28
0.300
7054.33
-0.38
-0.80
RQ
•
RR
6876.0
6899.0
7093.0
119.20
0.173
6956.00
-0.61
-1.03
RS
•
RV
• -
RX
8182.0
8163.0
8171.0
9.38
0.015
8172.00
2.24
1.81
S
7210.0
7210.0
7230.0
11.63
0.016
7216.67
0.00
-0.42
SA
•
sc
7406.0
7443.0
7391.0
26.78
0.042
7413.33
0.46
0.04
SD
7340.0
6660.0
8020.0
680.00
1.163
7340.00
0.29
-0.14
SF
7400.0
7172.0
7055.0
175.45
0.275
7209.00
-0.02
-0.44
SI
6510.0
6630.0
6810.0
151.00
0.239
6650.00
-1.32
-1.75
SK
7100.0
6400.0
6100.0
513.16
0.798
6533.33
-1.60
-2.02
SM
6790.0
6570.0
6640.0
112.40
0.176
6666.67
-1.28
-1.71
SN
7474.0
7733.0
6995.0
374.42
0.589
7400.67
0.43
0.01
SQ
ss
6808.0
6898.0
6807.0
52.23
0.073
6837.67
-0.88
-1.31
ST
7024.0
7100.0
7135.0
56.74
0.089
7086.33
-0.30
-0.73
su
6881.0
6855.0
6880.0
14.70
0.021
6872.00
-0.80
-1.23
sw
6350.0
7240.0
6280.0
535.20
0.766
6623.33
-1.39
-1.81
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
[0.
Insufficient data
x =
Determined to be an outlier
U = Below control limit
—>i
-------
| 8 / 10 EMSL-LV Performance Evaluation: Tritium in Water,
5-Nov-1993
N\
Tritium
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand- avg)
(known) Tag
SZ
7504.0
7477.0
7465.0
20.05
0.031
7482.00
0.62
0.20
T
7140.0
7190.0
7210.0
36.11
0.056
7180.00
-0.08
-0.51
TA
550.0
525.0
386.0
88.93
0.132
486.67
-15.75
-16.18
X
TC
6600.0
7000.0
7700.0
556.78
0.878
7100.00
-0.27
-0.70
TD
1827.0
1570.0
1485.0
178.06
0.273
1627.33
-13.08
-13.51
X
TE
•
TF
915;0
1015.0
1121.0
103.01
0.164
1017.00
-14.51
-14.94
X
TG
6932.0
6914.0
7016.0
54.42
0.081
6954.00
-0.61
-1.04
TH
7478.0
7405.0
7528.0
61.87
0.098
7470.33
0.60
0.17
TI
8562.0
8874.0
8718.0
156.01
0.249
8718.00
3.52
3.09
IT
TL
6458.0
6458.0
6530.0
41.59
0.057
6482.00
-1.72
-2.14
TQ
7918.0
8077.0
7826.0
126.98
0.200
7940.33
1.70
1.27
TS
•
TU
7710.0
8514.0
7552.0
515.89
0.768
7925.33
1.66
1.23
TV
9
TW
•
TX
7798.0
7630.0
8061.0
217.24
0.344
7829.67
1.44
1.01
U
7130.0
6910.0
7220.0
159.49
0.247
7086.67
-0.30
-0.73
UB
•
UC
•
UD
7330.0
7220.0
7260.0
55.66
0.088
7270.00
0.13
-0.30
UE
7578.0
7536.0
7563.0
21.32
0.034
7559.00
0.80
0.38
UH
•
UI
•
UK
7100.0
7300.0
7600.0
251.66
0.399
7333.33
0.28
-0.15
UL
7538.0
7399.0
7419.0
75.15
0.111
7452.00
0.55
0.13
UM
•
UN
7538.0
7591.0
7251.0
182.93
0.271
7460.00
0.57
0.15
uo
7108.0
6820.0
7126.0
171.70
0.244
7018.00
-0.46
-0.89
UT
•
UW
6657.0
6607.0
6503.0
78.55
0.123
6589.00
-1.47
-1.89
UX
7050.0
7880.0
7510.0
415.82
0.663
7480.00
0.62
0.19
UY
7183.0
7358.0
7259.0
87.76
0.140
7266.67
0.12
-0.31
VC
9405.0
9418.0
9359.0
31.02
0.047
9394;00
5;10
4.67
X
VE
•
VG
7740.0
7710.0
7660.0
40.39
0.064
7703.33
1.14
0.71
W
6907.0
6966.0
7055.0
74.51
0.118
6976.00
-0.56
-0.99
X
8360.0
8460.0
8270.0
95.03
0.152
8363.33
2.69
2.26
Y
7744.0
7787.0
7461.0
177.11
0.260
7664.00
1.05
0.62
Z
7296.0
7405.0
7347.0
54.53
0.087
7349.33
0.31
-0.11
Data sorted by Laboratory Avera§
fe
Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
6.67
X
OT
530.33
X
RC
1627.33
X
TD
486.67
X
TA
1017.00
X
TF
4350.00
X
DG
• =
No data submitted
TAG SYMBOLS
1T s Above control limit
in
ts
Insufficient data
x =
Determined to be an outlier
•11 = Below control limit
v
-------
EMSL-LV Performance Evaluation: Tritium in Water, 5-Nov-19ft3 9! 10 J
1 • • ' ; r • • • . .... •- . ¦ ¦ ¦ ¦ . =
Tritium
Data sorted by Laboratory Average
Average
Taj?
Lab
Average
Tax
Lab
Average
Tag
Lab
4874.33
X
RF
6896.67
w
7270.00
UD
5037.00
X
QA
6900.00
CJ
7303.67
QD
5175.33
X
AZ
6902.00
AY
7310.00
CA
5304.00
]}
FJ
6909.33
PP
7312.00
CK
5317,67
RB
6913.33
DI
7333.33
UK
6027.67
u
AJ
6926.67
JY
7340.00
SD
6057.33
51
EN
6936-33
MT
7343.33
J1
6085.67
11
A
6954.00
TO
7349.33
Z
6107.00
4
EX
6956.00
RR
7356.67
MS
6176.67
FU
6957.33
D
7363.33
EB
6267.67
K
6976,00
W
7365.33
AB
6285.00
QC
6999.33
AW
7373.00
PQ
6296.67
EH
7006.67
FE
7375.33
E
6328.00
RH
7018.00
UO
7380.33
DE
6348.00
EW
7019.67
JM
7400.00
AU
6410.67
QL
7026-67
KX
7400.67
9N
6482.00
TL
7041.00
AP
7413.33
SC
6501.33
1
7046.67
PV
7418.00
HK
6508.67
NB
7051.67
QI
7436.67
AH
6521.00
PT
7054.33
RO
7437.00
BA
6526.67
M
7060.00
BO
7442.33
C
6533.33
SK
7066.67
JS
7446,67
CE
6553.33
CO
7074.33
AP
7452.00
UL
6556.67
PE
7083.67
GE
7452.33
R
6589.00
uw
7083.67
DL
7456.67
JP
6594.33
m
7086.33
ST
7480.00
UN
6599.33
LT
7086.67
U
7460.00
CQ
6600.00
BW
7097.67
FK
7466.00
KH
6610.00
eIR
7099.00
LR
7470.33
TH
6618.00
RM
7100.00
TC
7473.33
DD
6623.33
sw
7100.00
GQ
7473.33
BM
6650.00
SI
7133.33
BG
7480.00
UX
6666.67
SM
7134.00
N
7481.67
J
6703.00
NJ
7164.33
EL
7482.00
sz
6741.00
MA
7167.33
CX
7492.00
QW
6762.67
DM
7171.00
AX
7492.67
BL
6787.00
CP
7171.67
PC
7496.00
PM
6816.67
AI
7180-00
T
7496.67
BC
6837.67
SS
7209.00
SF
7500.00
LF
6666.67
OA
7216.67
S
7523.33
HP
6872.00
su
7240.33
IC
7536.67
CS
6873.67
QT
7252.33
PB
7540.00
AE
6877.33
PL
7266.67
UY
7561.33
PI
6880.33
QK
7268.67
CM
7553.67
JK
• s No data submitted TAG SYMBOLS ft s Above control limit
0 a Insufficient data x s Determined to be an outlier ^ s Below control limit J
. — —— — — 1 -- — -- ¦ ¦ ¦
-------
10/10
EMSL-LV Performance Evaluation: Tritium in Water, 5-Nov-1993
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
7557.33
P
7776.67
MQ
8122.33
Q
7559.00
UE
7806.67
QX
8160.00
QP
7560.33
QU
7829.00
IU
8172.00
RX
7592.00
JE
7829.67
TX
8183.33
EA
7594.67
L
7863.33
HJ
8233.33
ML
7615.33
KM
7872.00
HU
8243.33
LE
7664.00
Y
7925.33
TU
8305.67
NP
7675.33
BR
7940.33
TQ
8363.33
X
7687.33
OX
7945.67
DH
8387.33
CG
7699.67
BB
7948.00
OL
8718.00
It
TI
7703.33
VG
8017.67
GO
8900.00
11
FZ
7731.67
QB
8044.67
O
9394.00
X
VC
7745.67
QZ
8096.00
DJ
11738.33
X
PJ
% responding labs
Frequency distribution
10-
J|Ma
mtfM.
-6
% responding labs
-4 -2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
—r~
+4
-r"
+6
10-
ill
I.
¦6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted TAG SYMBOLS ft a Above control limit
0 == Insufficient data x = Determined to be an outlier ^ s Below control limit
-------
United States Environmental Monitoring EPA 600/R-94/014
Environmental Protection Systems Laboratory November 1993
Agency P.O Box 93478
Las Vegas NV 89193-3478
Research and Development
<&EPA Gamma in Water
Performance
Evaluation Study
A Statistical Evaluation of
the November 12,1993 Data
9311-0138nrti014
-------
Gamma in Water
Performance Evaluation Study
November 12, 1993
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 12, 1993.
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: Gamma in Water, 12-Nov-1993 1/52
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 defmition 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 / 52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
The Range Analysis(R + SR) ia calculated from the range, mean range and standard error of
the range values. The range is the difference hptween 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: Gamma in Water, 12-Nov-1993 3 / 52
( I...
Cobalt-60 Statistical Summary 229 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
Statistic Respondents Non-outliers
Mean
36.82
Grand Avg 29.72
Std. Dev.
37.61
2.33
Variance
1414.71
5.41
% Coef. of Var.
102.14
7.82
% deviation of mean from known value
22.74
-0.95
Norm. dev. of mean from known value
0.18
-0.12
Median
29.67
29.67
% deviation of median from known value
-1.11
-1.11
Norm. dev. of median from known value
-0.01
-0.14
-------
/, —
4/52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Cobalt-60
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
30.0
2.08
0.473
27.67
-0.71
-0.81
AA
29.0
30.0
28.0
1.00
0.236
29.00
-0.25
-0.35
AE
28.0
28.0
27.0
0.58
0.118
27.67
-0.71
-0.81
AF
28.0
32.0
29.0
2.08
0.473
29.67
-0.02
-0.12
AI
•
AJ
35.0
34.0
35.0
0.58
0.118
34.67
1.72
1.62
AK
30.0
31.0
29.0
1.00
0.236
30.00
0.10
0.00
AL
32.0
33.0
28.0
2.65
0.591
31.00
0.45
0.35
AN
29.0
29.0
31.0
1.15
0.236
29.67
-0.02
-0.12
AP
28.0
33.0
28.0
2.89
0.591
29.67
-0.02
-0.12
AU
29.0
28.0
29.0
0.58
0.118
28.67
-0.36
-0.46
AW
27.0
25.0
25.0
1.15
0.236
25.67
-1.40
-1.50
AY
28.0
29.0
28.0
0.58
0.118
28.33
-0.48
-0.58
AZ
13.0
14.0
15.0
1.00
0.236
14.00
-5.44
-5.54 x
BA
25.0
27.0
32.0
3.61
0.827
28.00
-0.59
-0.69
BB
29.0
29.0
29.0
0.00
0.000
29.00
-0.25
-0.35
BC
29.0
27.0
30.0
1.53
0.354
28.67
-0.36
-0.46
BG
•
BH
29.0
29.0
30.0
0.58
0.118
29.33
-0.13
-0.23
BI
27.0
36.0
31.0
4.51
1.120
31.33
0.56
0.46
BK
30.0
32.0
29.0
1.53
0.354
30.33
0.21
0.12
BL
31.0
30.0
30.0
0.58
0.118
30.33
0.21
0.12
BM
33.0
30.0
31.0
1.53
0.354
31.33
0.56
0.46
BN
33.0
36.0
30.0
3.00
0.709
33.00
1.14
1.04
BO
29.0
27.0
30.0
1.53
0.354
28.67
-0.36
-0.46
BW
29.0
37.0
44.0
7.51
2.470
36.67
2.41
2.31
C
30.0
30.0
30.0
0.00
0.000
30.00
0.10
0.00
CA
30.0
29.0
33.0
2.08
0.473
30.67
0.33
0.23
CC
•
CE
33.0
29.0
33.0
2.31
0.473
31.67
0.68
0.58
CG
•
CJ
27.0
27.0
32.0
2.89
0.591
28.67
-0.36
-0.46
CK
26.0
29.0
31.0
2.52
0.591
28.67
-0.36
-0.46
CM
37.0
34.0
35.0
1.53
0.354
35.33
1.95
1.85
CO
24.0
29.0
34.0
5.00
1.345
29.00
-0.25
-0.35
CP
31.0
31.0
31.0
0.00
0.000
31.00
0.45
0.35
CQ
31.0
29.0
33.0
2.00
0.473
31.00
0.45
0.35
CS
32.0
28.0
31.0
2.08
0.473
30.33
0.21
0.12
CX
33.0
32.0
31.0
1.00
0.236
32.00
0.79
0.69
D
32.0
32.0
33.0
0.58
0.118
32.33
0.91
0.81
DD
30.0
28.0
28.0
1.15
0.236
28.67
-0.36
-0.46
DE
32.0
32.0
33.0
0.58
0.118
32.33
0.91
0.81
DG
29.0
29.0
29.0
0.00
0.000
29.00
-0.25
-0.35
DH
32.0
32.0
32.0
0.00
0.000
32.00
0.79
0.69
DJ
47,0
63.0
46.0
3.79
0.827
48.67
6.56
6.47 x
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
in
—9
Insufficient data
x =
Determined to be an outlier
II = Below control limit
jj
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 5/52
f
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
DL
30.0
29.0
30.0
0.58
0.118
29.67
-0.02
-0.12
DM
31.0
31.0
32.0
0.58
0.118
31.33
0.56
0.46
DO
29.0
28.0
34.0
3.21
0.709
30.33
0.21
0.12
DR
31.0
30.0
35.0
2.65
0.591
32.00
0.79
0.69
DT
27.0
24.0
28.0
2.08
0.473
26.33
-1.17
-1.27
DY
•
DZ
33.0
33.0
32.0
0.58
0.118
32.67
1.02
0.92
E
30.0
29.0
31.0
1.00
0.236
30.00
0.10
0.00
EA
28.0
29.0
27.0
1.00
0.236
28.00
-0.59
-0.69
EB
32.0
31.0
31.0
0.58
0.118
31.33
0.56
0.46
EH
30.0
27.0
29.0
1.53
0.354
28.67
-0.36
-0.46
EL
29.0
32.0
29.0
1.73
0.354
30.00
0.10
0.00
EN
29.0
25.0
28.0
2.08
0.473
27.33
-0.83
-0.92
EW
•
EX
31.0
25.0
31.0
3.46
0.709
29.00
-0.25
-0.35
EZ
236.0
371.0
236.0
77.94
29.472
281.00
87.05
86.95 x
FE
29.0
29.0
31.0
1.15
0.236
29.67
-0.02
-0.12
FJ
30.0
26.0
31.0
2.65
0.591
29.00
-0.25
-0.35
FK
30.0
30.0
30.0
0.00
0.000
30.00
0.10
0.00
FL
33.0
32.0
34.0
1.00
0.236
33.00
1.14
1.04
FU
28.0
28.0
29.0
0.58
0.118
28.33
-0.48
-0.58
FZ
19:0
13.0
17.0
3.06
0.709
16.33
-4.64
-4.73 x
GE
30.0
29.0
30.0
0.58
0.118
29.67
-0.02
-0.12
GI
31.0
32.0
31.0
0.58
0.118
31.33
0.56
0.46
GL
•
GO
24.0
26.0
26.0
1.15
0.236
25.33
-1.52
-1.62
GQ
•
HE
30.0
30.0
30.0
0.00
0.000
30.00
0.10
0.00
HI
27.0
32.0
32.0
2.89
0.591
30.33
0.21
0.12
HJ
26.0
34.0
34.0
4.62
0.945
31.33
0.56
0.46
HK
29.0
29.0
30.0
0.58
0.118
29.33
-0.13
-0.23
HL
33.0
30.0
29.0
2.08
0.473
30.67
0.33
0.23
HP
34.0
33.0
34.0
0.58
0.118
33.67
1.37
1.27
HU
26.0
27.0
27.0
0.58
0.118
26.67
-1.06
-1.15
HX
•
I
31.0
30.0
30.0
0.58
0.118
30.33
0.21
0.12
IA
38.0
37.0
39.0
1.00
0.236
38.00
2.87
2.77
IC
n
29.0
27.0
31.0
2.00
0.473
29.00
-0.25
-0.35
IU
31.0
30.0
31.0
0.58
0.118
30.67
0.33
•
0.23
j
30.0
30.0
29.0
0.58
0.118
29.67
-0.02
-0.12
eJE
28.0
28.0
30.0
1.15
0.236
28.67
-0.36
-0.46
JG
31.0
30.0
29.0
1.00
0.236
30.00
0.10
0.00
JI
JR
27.0
31.0
33.0
3.06
0.709
30.33
0.21
0.12
• =
[0m
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U = Below control limit
-------
((
6/52
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
^
Cobalt-60
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
30.0
33.0
33.0
1.73
0.354
32.00
0.79
0.69
JY
30.0
29.0
36.0
3.79
0.827
31.67
0.68
0.58
K
36.0
34.0
34.0
1.15
0.236
34.67
1.72
1.62
KF
•
KH
33.0
33.0
31.0
1.15
0.236
32.33
0.91
0.81
KL
30.0
31.0
31.0
0.58
0.118
30.67
0.33
0.23
KM
28.0
30.0
30.0
1.15
0.236
29.33
-0.13
-0.23
KX
32.0
30.0
30.0
1.15
0.236
30.67
0.33
0.23
L
29.0
29.0
26.0
1.73
0.354
28.00
-0.59
-0.69
LA
•
LE
31.0
37.0
30.0
3.79
0.827
32.67
1.02
0.92
LF
29.0
29.0
30.0
0.58
0.118
29.33
-0.13
-0.23
LM
•
LR
33.0
32.0
32.0
0.58
0.118
32.33
0.91
0.81
LT
30.0
30.0
30.0
0.00
0.000
30.00
0.10
0.00
M
28.0
29.0
27.0
1.00
0.236
28.00
-0.59
-0.69
MA
30.0
30.0
30.0
0.00
0.000
30.00
0.10
0.00
ML
29.0
30.0
28.0
1.00
0.236
29.00
-0.25
-0.35
MN
6
MP
29.0
28.0
32.0
2.08
0.473
29.67
-0.02
-0.12
MQ
29.0
28.0
29.0
0.58
0.118
28.67
-0.36
-0.46
MS
29.0
29.0
29.0
0.00
0.000
29.00
-0.25
-0.35
MT
236.0
238.0
246.0
5.29
1.345
240.00
72.84
72.75
X
MV
31.0
31.0
28.0
1.73
0.354
30.00
0.10
0.00
MY
22.0
22.0
23.0
0.58
0.118
22.33
-2.56
-2.66
N
31.0
29.0
33.0
2.00
0.473
31.00
0.45
0.35
NB
29.0
24.0
28.0
2.65
0.591
27.00
-0.94
-1.04
NH
30.0
29.0
29.0
0.58
0.118
29.33
-0.13
-0.23
NI
29.0
24.0
28.0
2.65
0.591
27.00
-0.94
-1.04
NJ
28.0
28.0
28.0
0.00
0.000
28.00
-0.59
-0.69
NK
28.0
23.0
23.0
2.89
0.591
24.67
-1.75
-1.85
NP
29.0
28.0
32.0
2.08
0.473
29.67
-0.02
-0.12
NZ
37.0
28.0
30.0
4.73
1.120
31.67
0.68
0.58
O
30.0
30.0
30.0
0.00
0.000
30.00
0.10
0.00
OA
29.0
30.0
29.0
0.58
0.118
29.33
-0.13
-0.23
OB
23.0
23.0
23.0
0.00
0.000
23.00
-2.33
-2.42
OK
27.0
26.0
26.0
0.58
0.118
26.33
-1.17
-1.27
OL
39;0
39.0
39.0
0.00
0.000
39.00
3.22
3.12
X
OM
28.0
30.0
31.0
1.53
0.354
29.67
-0.02
-0.12
OT
37.0
40.0
35.0
2.52
0.591
37.33
2.64
2.54
OZ
•
PB
32.0
31.0
29.0
1.53
0.354
30.67
0.33
0.23
PC
29.0
30.0
31.0
.1.00
0.236
30.00
0.10
0.00
PD
• -
PE
52.0
44.0
42.0
5.29
1.345
46.00
5.64
5.54
X
• = No data submitted
TAG SYMBOLS
It s Above control limit
0 = Insufficient data
Vi
x =
Determined to be an outlier
11 = Below control limit
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 7 / 52
Cobalt>60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PI
29.0
29.0
31.0
1.15
0.236
29.67
-0.02
-0.12
PM
26.0
25.0
31.0
3.21
0.709
27.33
-0.83
-0.92
PP
75.0
90.0
95.0
10.41
3.596
86.67
19.73
19.63
X
PQ
32.0
32.0
30.0
1.15
0.236
31.33
0.56
0.46
PT
28.0
28.0
31.0
1.73
0.354
29.00
-0.25
-0.35
PU
•
PV
29.0
31.0
30.0
1.00
0.236
30.00
0.10
0.00
PW
30.0
30.0
26.0
2.31
0.473
28.67
-0.36
-0.46
PX
29.0
28.0
32.0
2.08
0.473
29.67
-0.02
-0.12
PY
•
Q
28.0
28.0
29.0
0.58
0.118
28.33
-0.48
-0.58
QB
30.0
34.0
30.0
2.31
0.473
31.33
0.56
0.46
QJ
26.0
34.0
29.0
4.04
0.945
29.67
-0.02
-0.12
QK
•
QL
29.0
30.0
30.0
0.58
0.118
29.67
-0.02
-0.12
QM
30.0
25.0
30.0
2.89
0.591
28.33
-0.48
-0.58
QP
310
38.0
32.0
3.79
0.827
33.67
1.37
1.27
QQ
•
QT
28.0
28.0
32.0
2.31
0.473
29.33
-0.13
-0.23
QU
32.0
24.0
28.0
4.00
0.945
28.00
-0.59
-0.69
QX
34.0
35.0
34.0
0.58
0.118
34.33
1.60
1.50
QZ
28.0
29.0
28.0
0.58
0.118
28.33
-0.48
-0.58
R
30.0
29.0
29.0
0.58
0.118
29.33
-0.13
-0.23
RA
30.0
31.0
27.0
2.08
0.473
29.33
-0.13
-0.23
RC
30.0
31.0
32.0
1.00
0.236
31.00
0.45
0.35
RF
24.0
27.0
31.0
3.51
0.827
27.33
-0.83
-0.92
RH
25.0
26.0
27.0
1.00
0.236
26.00
-1.29
-1.39
RK
30.0
33.0
29.0
2.08
0.473
30.67
0.33
0.23
RL
133.0
133.0
133.0
0.00
0.000
133.00
35.78
35.68
X
RM
33.0
29.0
29.0
2.31
0.473
30.33
0.21
0.12
RO
32.0
27.0
30.0
2.52
0.591
29.67
-0.02
-0.12
HQ
•
RR
32.0
31.0
30.0
1.00
0.236
31.00
0.45
0.35
RV
25.0
23.0
26.0
1.53
0.354
24.67
-1.75
-1.85
RX
31.0
28.0
25.0
3.00
0.709
28.00
-0.59
-0.69
RZ
28.0
35.0
27.0
4.36
0.945
30.00
0.10
0.00
S
28.0
27.0
29.0
1.00
0.236
28.00
-0.59
-0.69
SA
•
sc
29.0
29.0
31.0
1.15
0.236
29.67
-0.02
-0.12
SD
28.0
29.0
29.0
0.58
0.118
28.67
-0.36
-0.46
SF
31.0
29.0
33.0
2.00
0.473
31.00
0.45
0.35
SI
32.0
32.0
28.0
2.31
0.473
30.67
0.33
0.23
SK
6.0
5.0
6.0
0.58
0.118
5.67
-8:33
-8;43
X
SM
28.0
28.0
27.0
0.58
0.118
27.67
-0.71
-0.81
SN
267.0
240.0
244.0
8.89
2.921
247.00
75;27
75.17
X
• =
[0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
= Below control limit
'j
-------
((
8/52
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
^
Cobalt-60
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
• (grand-avg)
(known) Tag
SR
24.0
29.0
30.0
3.21
0.709
27.67
-0.71
-0.81
ss
32.0
28.0
31.0
2.08
0.473
30.33
0.21
0.12
ST
28.0
27.0
27.0
0.58
0.118
27.33
-0.83
-0.92
su
•
sv
34.0
32.0
31.0
1.53
0.354
32.33
0.91
0.81
sw
26.0
28.0
30.0
2.00
0.473
28.00
-0.59
-0.69
sz
30.0
28.0
31.0
1.53
0.354
29.67
-0.02
-0.12
T
26.0
27.0
26.0
0.58
0.118
26.33
-1.17
i
to
TA
33.0
30.0
28.0
2.52
0.591
30.33
0.21
0.12
TB
35.0
34.0
33.0
1.00
0.236
34.00
1.48
1.39
TC
130.0
140.0
140.0
5.77
1.345
136.67
37.05
36.95
X
TD
15.0
16.0
17.0
1.00
0.236
16.00
-4,75
-4.85
X
TE
•
TG
31.0
30.0
31.0
0.58
0.118
30.67
0.33
0.23
TH
26.0
24.0
25.0
1.00
0.236
25.00
-1.63
-1.73
TI
31.0
32.0
31.0
0.58
0.118
31.33
0.56
0.46
TK
23.0
26.0
30.0
3.51
0.827
26.33
-1.17
-1.27
TL
36.0
26.0
30.0
5.03
1.345
30.67
0.33
0.23
TO
29.0
24.0
29.0
2.89
0.591
27.33
-0.83
-0.92
TQ
27.0
29.0
29.0
1.15
0.236
28.33
-0.48
-0.58
TR
41.0
40.0
40.0
0.58
0.118
40.33
3.68
3.58
X
TS
23.0
23.0
22.0
0.58
0.118
22.67
-2.44
-2.54
rr
•
TU
30.0
29.0
29.0
0.58
0.118
29.33
-0.13
-0.23
TV
•
TW
•
u
27.0
31.0
30.0
2.08
0.473
29.33
-0.13
-0.23
UB
•
uc
• -
UE
34.0
33.0
33.0
0.58
0.118
33.33
1.25
1.15
UI
29.0
31.0
31.0
1.15
0.236
30.33
0.21
0.12
UK
*'
UM
30.0
30.0
29.0
0.58
0.118
29.67
-0.02
-0.12
UN
28.0
30.0
29.0
1.00
0.236
29.00
-0.25
-0.35
UP
26.0
28.0
28.0
1.15
0.236
27.33
-0.83
-0.92
UR
•
UT
•
UV
30.0
27.0
29.0
1.53
0.354
28.67
-0.36
-0.46
UW
31.0
32.0
33.0
1.00
0.236
32.00
0.79
0.69
UX
34.0
29.0
28.0
3.21
0.709
30.33
0.21
0.12
UY
29.0
30.0
28.0
1.00
0.236
29.00
-0.25
-0.35
VA
•
VC
230.0
233.0
222.0
5.69
1.570
228.33
68.80
68.70
X
VE
272.0
276.0
279.0
3.51
0.827
275.67
85.20
85.10
X
W
- 9
• = No data submitted
TAG SYMBOLS
IT s Above control limit
0 = Insufficient data
^
x =
Determined to be an outlier
11 = Below control limit
y
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 9 / 52
Cobalt-60
\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
WA
28.0
29.0
29.0
0.58
0.118
28.67
-0.36
-0.46
X
29.0
28.0
27.0
1.00
0.236
28.00
-0.59
-0.69
Y
30.0
27.0
29.0
1.53
0.354
28.67
-0.36
-0.46
Z
30.0
30.0
30.0
0.00
0.000
30.00
0.10
0.00
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.67
X
SK
28.00
EA
29.33
QT
14.00
X
AZ
28.00
BA
29.33
OA
16.00
X
TD
28.33
TQ
29.33
NH
16.33
X
FZ
28.33
QZ
29.33
LF
22.33
MY
28.33
QM
29.33
KM
22.67
TS
28.33
Q
29.33
HK
23.00
OB
28.33
FU
29.33
BH
24.67
RV
28.33
AY
29.67
UM
24.67
NK
28.67
Y
29.67
SZ
25.00
TH
28.67
WA
29.67
SC
25.33
GO
28.67
UV
29.67
RO
25.67
AW
28.67
SD
29.67
QL
26.00
RH
28.67
PW
29.67
QJ
26.33
TK
28.67
MQ
29.67
PX
26.33
T
28.67
JE
29.67
PI
26.33
OK
28.67
EH
29.67
OM
26.33
DT
28.67
DD
29.67
NP
26.67
HU
28.67
CK
29.67
MP
27.00
NI
28.67
CJ
29.67
J
27.00
NB
28.67
BO
29.67
GE
27.33
UP
28.67
BC
29.67
FE
27.33
TO
28.67
AU
29.67
DL
27.33
ST
29.00
UY
29.67
AP
27.33
RF
29.00
UN
29.67
AN
27.33
PM
29.00
PT
29.67
AF
27.33
EN
29.00
MS
30.00
Z
27.67
SR
29.00
ML
30.00
RZ
27.67
SM
29.00
IC
30.00
PV
27.67
AE
29.00
FJ
30.00
PC
27.67
A
29.00
EX
30.00
O
28.00
X
29.00
DG
30.00
MV
28.00
SW
29.00
CO
30.00
MA
28.00
s
29.00
BB
30.00
LT
28.00
RX
29.00
AA
30.00
JG
28.00
QU
29.33
U
30.00
HE
28.00
NJ
29.33
TU
30.00
FK
28.00
M
29.33
RA
30.00
EL
28.00
L
29.33
R
30.00
E
• = No data submitted
TAG SYMBOLS
tr
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
= Below control limit
-------
10/52
Cobalt-60
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
30.00
C
31.00
RC
32.67
LE
30.00
AK
31.00
N
32.67
DZ
30.33
UX
31.00
CQ
33.00
FL
30.33
UI
31.00
CP
33.00
BN
30.33
TA
31.00
AL
33.33
UE
30.33
SS
31.33
TT
33.67
QP
30.33
RM
31.33
QB
33.67
HP
30.33
JR
31.33
PQ
34.00
TB
30.33
I
31.33
HJ
34.33
QX
30.33
HI
31.33
GI
34.67
K
30.33
DO
31.33
EB
34.67
AJ
30.33
CS
31.33
DM
35.33
CM
30.33
BL
31.33
BM
36.67
BW
30.33
BK
31.33
BI
37.33
OT
30.67
TL
31.67
NZ
38.00
IA
30.67
TG
31.67
JY
39.00
X
OL
30.67
SI
31.67
CE
40.33
X
TR
30.67
RK
32.00
UW
46.00
X
PE
30.67
PB
32.00
JS
48.67
X
DJ
30.67
KX
32.00
DR
86.67
X
PP
30.67
KL
32.00
DH
133.00
X
RL
30.67
IU
32.00
CX
136.67
X
TC
30.67
HL
32.33
sv
228.33
X
VC
30.67
CA
32.33
LR
.240.00
X
MT
31.00
SF
32.33
KH
247.00
X
SN
31.00
RR
32.33
DE
275.67
X
VE
32.33
D
281.00
X
EZ
responding labs
Frequency distribution
10-
JBa
lk
-M
-4 r -2 0 +2
Normalized deviation of the mean from the known value
+4
+6
• = No data submitted TAG SYMBOLS IT s Above control limit
0 = Insufficient data x 3 Determined to be an outlier ^ = Below control limit
^ '
-------
ft ^
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 11/52
Cobalt-60
% responding labs Frequency distribution
10-
!!¦¦¦
-4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
12/52
r "" ^ —
Zinc-65 Statistical Summary 229 Participants
The known value of this nuclide is 150.0 pCi/1 with an expected precision of 15.0; the control limits
are 124.0 to 176.0; the warning regions are 124.0 to 132.6 and 167.4 to 176.0
Statistic Respondents Non-outliers
Mean
189.88
Grand Avg 156.07
Std. Dev.
190.96
9.24
Variance
36465.03
85.36
% Coef. of Var.
100.57
5.92
% deviation of mean from known value
26.58
4.05
Norm. dev. of mean from known value
0.21
0.66
Median
156.50
156.33
% deviation of median from known value
4.33
4.22
Norm. dev. of median from known value
0.03
0.69
-------
//
13 / 52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
154.0
141.0
165.0
12.01
0.945
153.33
-0.32
0.38
AA
157.0
155.0
153.0
2.00
0.158
155.00
-0.12
0.58
AE
158.0
155.0
159.0
2.08
0.158
157.33
0.15
0.85
AF
AI
156.0
150.0
157.0
3.79
0.276
154.33
-0.20
0.50
AJ
157.0
157.0
157.0
0.00
0.000
157.00
0.11
•
0.81
AK
158.0
160.0
160.0
1.15
0.079
159.33
0.38
1.08
AL
145.0
146.0
146.0
0.58
0.039
145.67
-1.20
-0.50
AN
145.0
148.0
155.0
5.13
0.394
149.33
-0.78
-0.08
AP
154.0
151.0
150.0
2.08
0.158
151.67
-0.51
0.19
AU
159.0
160.0
159.0
0.58
0.039
159.33
0.38
1.08
AW
155.0
149.0
152.0
3.00
0.236
152.00
-0.47
0.23
AY
148.0
149.0
146.0
1.53
0.118
147.67
-0.97
-0.27
AZ
72.0
68.0
76.0
4.00
0.316
72.00
-9.71
-9.01 x
BA
140.0
138.0
142.0
2.00
0.158
140.00
-1.86
-1.15
BB
152.0
159.0
161.0
4.73
0.354
157.33
0.15
0.85
BC
153.0
153.0
159.0
3.46
0.236
155.00
-0.12
0.58
BG
•
BH
146.0
149.0
150.0
2.08
0.158
148.33
-0.89
-0.19
BI
146.0
135.0
141.0
5.51
0.433
140.67
-1.78
-1.08
BK
159.0
162.0
156.0
3.00
0.236
159.00
0.34
1.04
BL
158.0
154.0
158.0
2.31
0.158
156.67
0.07
0.77
BM
158.0
159.0
164.0
3.21
0.236
160.33
0.49
1.19
BN
153.0
158.0
168.0
7.64
0.591
159.67
0.42
1.12
BO
161.0
159.0
160.0
1.00
0.079
160.00
0.45
1.15
BW
250,0
250.0
240.0
5.77
0.394
246.67
10.46
11.16 x
C
153.0
154.0
155.0
1.00
0.079
154.00
-0.24
0.46
CA
152.0
152.0
167.0
8.66
0.591
157.00
0.11
0.81
CC
•
CE
162.0
154.0
159.0
4.04
0.315
158.33
0.26
0.96
CG
•
CJ
142.0
154.0
160.0
9.17
0.709
152.00
-0.47
0.23
CK
147.0
144.0
146.0
1.53
0.118
145.67
-1.20
-0.50
CM
162.0
149.0
166.0
8.89
0.669
159.00
0.34
1.04
CO
162.0
164.0
163.0
1.00
0.079
163.00
0.80
1.50
CP
162.0
160.0
164.0
2.00
0.158
162.00
0.68
1.39
CQ
174.0
167.0
181.0
7.00
0.551
174.00
2.07
2.77
CS
161.0
160.0
162.0
1.00
0.079
161.00
0.57
1.27
CX
165.0
165.0
170.0
2.89
0.197
166.67
1.22
1.92
D
173.0
171.0
176.0
2.52
0.197
173.33
1.99
2.69
DD
163.0
161.0
158.0
2.52
0.197
160.67
0.53
1.23
DE
156.0
156.0
157.0
0.58
0.039
156.33
0.03
0.73
DG
160.0
161.0
165.0
2.65
0.197
162.00
0.68
1.39
DH
151.0
150.0
155.0
2.65
0.197
152.00
-0.47
0.23
DJ
190.0
190.0
191.0
0.58
0.039
190.33
3.96
4.66 x
• =
. 0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
f! = Above control limit
s Below control limit
^ if
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 14 / 52
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
154.0
157.0
158.0
2.08
0.158
156.33
0.03
0.73
DM
156.0
156.0
153.0
1.73
0.118
155.00
-0.12
0.58
DO
166.0
160.0
147.0
9.71
0.748
157.67
0.18
0.89
DR
172.0
175.0
170.0
2.52
0.197
172.33
1.88
2.58
DT
149.0
164.0
139.0
12.58
0.984
150.67
-0.62
0.08
DY
•-
DZ
158.0
160.0
157.0
1.53
0.118
158.33
0.26
0.96
E
150.0
153.0
152.0
1.53
0.118
151.67
-0.51
0.19
EA
144.0
150.0
144.0
3.46
0.236
146.00
-1.16
-0.46
EB
176.0
174.0
173.0
1.53
0.118
174.33
2.11
2.81
EH
150.0
146.0
148.0
2.00
0.158
148.00
-0.93
-0.23
EL
153.0
151.0
153.0
1.15
0.079
152.33
-0.43
0.27
EN
209;0
209.0
209.0
0.00
0.000
209.00
6;11
6;81
X
EW
EX
155.0
161.0
151.0
5.03
0.394
155.67
-0.05
0.65
EZ
1331.0
1220.0
1334.0
64.97
7.646
1295.00
131-51
132.21
X
FE
157.0
150.0
149.0
4.36
0.315
152.00
-0.47
0.23
FJ
158.0
150.0
151.0
4.36
0.315
153.00
-0.35
0.35
FK
139.0
139.0
139.0
0.00
0.000
139.00
-1.97
-1.27
FL
186.0
170.0
174.0
8.33
0.630
176.67
2.38
3.08
IT
FU
154.0
154.0
158.0
2.31
0.158
155.33
-0.08
0.62
FZ
89,0
75.6
86.0
7.37
0.551
83.33
-Hi 40
-7:70
X
GE
154.0
157.0
158.0
2.08
0.158
156.33
0.03
0.73
GI
172.0
178.0
165.0
6.51
0.512
171.67
1.80
2.50
GL
•
GO
227.0
232.0
223.0
4.51
0.354
227:33
8.23
8.93
X
GQ
•
HE
150.0
146.0
154.0
4.00
0.315
150.00
-0.70
0.00
HI
152.0
143.0
147.0
4.51
0.354
147.33
-1.01
-0.31
HJ
149.0
156.0
169.0
10.15
0.788
158.00
0.22
0.92
HK
155.0
153.0
158.0
2.52
0.197
155.33
-0.08
0.62
HL
149.0
145.0
148.0
2.08
0.158
147.33
-1.01
-0.31
HP
189.0
167.0
179.0
11.02
0.866
178.33
2.57
3.27
ft
HU
135.0
134.0
132.0
1.53
0.118
133.67
-2.59
-1.89
HX
•
I
158.0
151.0
154.0
3.51
0.276
154.33
-0.20
0.50
IA
178.0
175.0
182.0
3.51
0.276
178.33
2.57
3.27
ft
IC
TT
163.0
166.0
160.0
3.00
0.236
163.00
0.80
1.50
M.Jk
IU
165.0
160.0
171.0
5.51
0.433
165.33
1.07
1.77
•
J
160.0
159.0
160.0
0.58
0.039
159.67
0.42
1.12
JE
156.0
147.0
154.0
4.73
0.354
152.33
-0.43
0.27
JG
JT
130.0
144.0
160.0
15.01
1.345
144.67
-1.32
-0.62
JR
151.0
153.0
161.0
5.29
0.394
155.00
-0.12
0.58
•
• = No data submitted
0 s Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft a Above control limit
s Below control limit
-------
ft
15/52
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
^
Zinc-65
\
Lah
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
161.0
190.0
181.0
14.84
1.270
177.33
2.46
3.16
ft
JY
186.0
166.0
179.0
10.15
0.788
177.00
2.42
3.12
ft
K
177.0
181.0
181.0
2.31
0.158
179.67
2.72
3.43
ft
KF
•
KH
156.0
156.0
161.0
2.89
0.197
157.67
0.18
0.89
KL
160.0
168.0
157.0
5.69
0.433
161.67
0.65
1.35
KM
147.0
151.0
148.0
2.08
0.158
148.67
-0.85
-0.15
KX
156.0
151.0
157.0
3.21
0.236
154.67
-0.16
0.54
L
145.0
144.0
140.0
2.65
0.197
143.00
-1.51
-0.81
LA
•
LE
176.0
168.0
160.0
8.00
0.630
168.00
1.38
2.08
LF
160.0
150.0
150.0
5.77
0.394
153.33
-0.32
0.38
LM
•
LR
183.0
203.0
190.0
10.15
0.788
192.00
4.15
4.86
X
LT
157.0
157.0
157.0
0.00
0.000
157.00
0.11
0.81
M
158.0
156.0
160.0
2.00
0.158
158.00
0.22
0.92
MA
161.0
163.0
161.0
1.15
0.079
161.67
0.65
1.35
ML
163.0
171.0
153.0
9.02
0.709
162.33
0.72
1.42
MN
•
MP
175.0
169.0
164.0
5.51
0.433
169.33
1.53
2.23
MQ
144.0
141.0
139.0
2.52
0.197
141.33
-1.70
-1.00
MS
161.0
159.0
158.0
1.53
0.118
159.33
0.38
1.08
MT
1344.0
1365.0
1372.0
14.57
1.195
1360.33
139.06
139:76
X
MV
164.0
158.0
158.0
3.46
0.236
160.00
0.45
1.15
MY
135.0
141.0
138.0
3.00
0.236
138.00
-2.09
-1.39
N
161.0
162.0
163.0
1.00
0.079
162.00
0.68
1.39
NB
155.0
158.0
159.0
2.08
0.158
157.33
0.15
0.85
NH
164.0
165.0
167.0
1.53
0.118
165.33
1.07
1.77
NI
164.0
132.0
149.0
16.01
1.495
148.33
-0.89
-0.19
NJ
150.0
150.0
150.0
0.00
0.000
150.00
-0.70
0.00
NK
147.0
137.0
124.0
11.53
0.906
136.00
-2.32
-1.62
NP
157.0
157.0
145.0
6.93
0.473
153.00
-0.35
0.35
NZ
116.0
138.0
130.0
11.14
0.866
128.00
-3.24
-2.54
O
163.0
162.0
163.0
0.58
0.039
162.67
0.76
1.46
OA
157.0
154.0
150.0
3.51
0.276
153.67
-0.28
0.42
OB
•
OK
140.0
137.0
129.0
5.69
0.433
135.33
-2.39
-1.69
OL
162.0
162.0
162.0
0.00
0.000
162.00
0.68
1.39
OM
156.0
160.0
162.0
3.06
0.236
159.33
0.38
1.08
OT
166.0
164.0
156.0
5.29
0.394
162.00
0.68
1.39
OZ
•
PB
146.0
145.0
145.0
0.58
0.039
145.33
-1.24
-0.54
PC
156.0
161.0
168.0
6.03
0.473
161.67
0.65
1.35
PD
•
PE
159.0
152.0
146.0
6.51
0.512
152.33
-0.43
0.27
• s No data submitted
TAG SYMBOLS
IT = Above control limit
0 = Insufficient data
Vi
x =
Determined to be an outlier
II = Below control limit
-------
S _____
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 16/52
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PI
159.0
157.0
162.0
2.52
0.197
159.33
0.38
1.08
PM
•
PP
423.0
463.0
458.0
18.93
1.720
444.67
33.32
34.03 x
PQ
161.0
166.0
169.0
4.04
0.315
165.33
1.07
1.77
PT
152.0
155.0
153.0
1.53
0.118
153.33
-0.32
0.38
PU
•
PV
165.0
157.0
148.0
8.50
0.669
156.67
0.07
0.77
PW
160.0
158.0
161.0
1.53
0.118
159.67
0.42
1.12
PX
148.0
155.0
156.0
4.36
0.315
153.00
-0.35
0.35
FY
•
Q
156.0
154.0
152.0
2.00
0.158
154.00
-0.24
0.46
QB
153.0
176.0
181.0
14.93
1.195
170.00
1.61
2.31
QJ
163.0
166.0
162.0
2.08
0.158
163.67
0.88
1.58
QK
•
QL
165.0
168.0
172.0
3.51
0.276
168.33
1.42
2.12
QM
147.0
151.0
133.0
9.45
0.709
143.67
-1.43
-0.73
QP
159.0
161.0
161.0
1.15
0.079
160.33
0.49
1.19
QQ
•
QT
154.0
159.0
138.0
10.97
0.827
150.33
-0.66
0.04
QU
97.0
87.0
92.0
5.00
0.394
92.00
-7.40
-6,70 x
QX
168.0
169.0
169.0
0.58
0.039
168.67
1.45
2.16
QZ
156.0
158.0
164.0
4.16
0.315
159.33
0.38
1.08
R
154.0
158.0
158.0
2.31
0.158
156.67
0.07
0.77
RA
176.0
171.0
173.0
2.52
0.197
173.33
1.99
2.69
RC
164.0
164.0
164.0
0.00
0.000
164.00
0.92
1.62
RF
157.0
142.0
157.0
8.66
0.591
152.00
-0.47
0.23
RH
138.0
143.0
130.0
6.56
0.512
137.00
-2.20
-1.50
RK
147.0
143.0
145.0
2.00
0.158
145.00
-1.28
-0.58
RL
166.0
166.0
166.0
0.00
0.000
166.00
1.15
1.85
RM
143.0
147.0
149.0
3.06
0.236
146.33
-1.12
-0.42
RO
159.0
134.0
156.0
13.65
0.984
149.67
-0.74
-0.04
RQ
•-
RR
158.0
169.0
159.0
6.08
0.433
162.00
0.68
1.39
RV
153.0
148.0
135.0
9.29
0.709
145.33
-1.24
-0.54
RX
162.0
147.0
153.0
7.55
0.591
154.00
-0.24
0.46
RZ
157.0
169.0
177.0
10.07
0.788
167.67
1.34
2.04
S
157.0
164.0
167.0
5.13
0.394
162.67
0.76
1.46
SA
•
sc
159.0
155.0
155.0
2.31
0.158
156.33
0.03
0.73
SD
151.0
153.0
152.0
1.00
0.079
152.00
-0.47
0.23
SF
163.0
158.0
161.0
2.52
0.197
160.67
0.53
1.23
SI
175.0
153.0
160.0
11.24
0.866
162.67
0.76
1.46
SKI
27.0
27.0
29.0
1.15
0.079
27.67
-14;83
-14.13 x
SM
137.0
147.0
147.0
5.77
0.394
143.67
-1.43
-0.73
m
li82;0
1141.0
1220.0
39.51
5.021
1181.00
118.35
119,05 x
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
JJ s Below control limit
-------
17/52
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Zinc-65
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
- (grand-avg)
(known) Tag
SR
157.0
157.0
147.0
5.77
0.394
153.67
-0.28
0.42
ss
150.0
156.0
155.0
3.21
0.236
153.67
-0.28
0.42
ST
149.0
145.0
152.0
3.51
0.276
148.67
-0.85
-0.15
su
•
sv
163.0
153.0
152.0
6.08
0.433
156.00
-0.01
0.69
sw
159.0
153.0
157.0
3.06
0.236
156.33
0.03
0.73
sz
160.0
161.0
159.0
1.00
0.079
160.00
0.45
1.15
T
152.0
147.0
140.0
6.03
0.473
146.33
-1.12
-0.42
TA
150.0
160.0
144.0
8.08
0.630
151.33
-0.55
0.15
TB
158.0
167.0
166.0
4.93
0.354
163.67
0.88
1.58
TC
760.0
800.0
800.0
23.09
2.095
786.67
72.82
73.52
X
TD
91.0
91.0
80.0
6.35
0.433
87.33
'7.94
-7.24
X
TE
•
TG
163.0
160.0
158.0
2.52
0.197
160.33
0.49
1.19
TH
137.0
144.0
141.0
3.51
0.276
140.67
-1.78
-1.08
TI
161.0
166.0
164.0
2.52
0.197
163.67
0.88
1.58
TK
125.0
135.0
150.0
12.58
0.984
136.67
-2.24
-1.54
TL
136.0
148.0
155.0
9.61
0.748
146.33
-1.12
-0.42
TO
157.0
156.0
170.0
7.81
0.551
161.00
0.57
1.27
TQ
160.0
161.0
164.0
2.08
0.158
161.67
0.65
1.35
TR
141.0
150.0
145.0
4.51
0.354
145.33
¦1.24
-0.54
TS
112.0
116.0
116.0
2.08
0.158
114.33
•4.82
-4.12
X
TT
•
TU
157.0
160.0
160.0
1.73
0.118
159.00
0.34
1.04
TV
•
TW
•
U
142.0
158.0
136.0
11.37
0.866
145.33
-1.24
-0.54
UB
0
UC
•
UE
147.0
149.0
150.0
1.53
0.118
148.67
-0.85
-0.15
UI
153.0
158.0
154.0
2.65
0.197
155.00
-0.12
0.58
UK
• -
UM
156.0
152.0
154.0
2.00
0.158
154.00
-0.24
0.46
UN
162.0
162.0
153.0
5.20
0.354
159.00
0.34
1.04
UP
150.0
153.0
153.0
1.73
0.118
152.00
-0.47
0.23
UB
•
UT
•
UV
161.0
152.0
156.0
4.51
0.354
156.33
0.03
0.73
UW
155.0
152.0
148.0
3.51
0.276
151.67
-0.51
0.19
ux
166.0
163.0
164.0
1.53
0.118
164.33
0.95
1.66
UY
164.0
162.0
158.0
3.06
0.236
161.33
0.61
1.31
VA
•
VC
1462,0
1316.0
1124.0
169.52
24.447
1300.67
132.17
132.87
X
VE
W
1330.0
1420.0
1420.0
51.96
5.846
1390.00
142.48
143*18.
X
•
• = No data submitted
TAG SYMBOLS
') = Above control limit
0 5 Insufficient data x s Determined to be an outlier s Below control limit
-------
ft
^
EMSL-LV Performance Evaluation: Gamma
in Water, 12-Nov-1993
18/52
/
Zinc-65
\
Exper.
Rng anal
Normalized deviation
Lab Res. 1 Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
WA 156.0 164.0
161.0 4.04
0.315
160.33 0.49
1.19
X 159.0 157.0
151.0 4.16
0.315
155.67 -0.05
0.65
Y 159.0 147.0
145.0 7.57
0.551
150.33 -0.66
0.04
Z 155.0 150.0
150.0 2.89
0.197
151.67 -0.51
0.19
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag
Lab
Average Tag
Lab
27.67 x
SK
148.33
BH
154.00
C
72.00 x
AZ
148.67
UE
154.33
I
83.33 x
FZ
148.67
ST
154.33
AF
87.33 x
TD
148.67
KM
154.67
KX
92.00 x
QU
149.33
AN
155.00
ui
114.33 x
TS
149.67
RO
155.00
JR
128.00
NZ
150.00
NJ
155.00
DM
133.67
HU
150.00
HE
155.00
BC
135.33
OK
150.33
Y
155.00
AA
136.00
NK
150.33
QT
155.33
HK
136.67
TK
150.67
DT
155.33
FU
137.00
RH
151.33
TA
155.67
X
138.00
MY
151.67
Z
155.67
EX
139.00
FK
151.67
UW
156.00
SV
140.00
BA
151.67
E
156.33
uv
140.67
TH
151.67
AP
156.33
sw
140.67
BI
152.00
UP
156.33
sc
141.33
MQ
152.00
SD
156.33
GE
143.00
L
152.00
RF
156.33
DL
143.67
SM
152.00
FE
156.33
DE
143.67
QM
152.00
DH
156.67
R
144.67
JG
152.00
CJ
156.67
PV
145.00
RK
152.00
AW
156.67
BL
145.33
U
152.33
PE
157.00
LT
145.33
TR
152.33
JE
157.00
CA
145.33
RV
152.33
EL
157.00
AJ
145.33
PB
153.00
PX
157.33
NB
145.67
CK
153.00
NP
157.33
BB
145.67
AL
153.00
FJ
157.33
AE
146.00
EA
153.33
PT
157.67
KH
146.33
TL
153.33
LF
157.67
DO
146.33
T
153.33
A
158.00
M
146.33
RM
153.67
SS
158.00
HJ
147.33
HL
153.67
SR
158.33
DZ
147.33
HI
153.67
OA
158.33
CE
147.67
AY
154.00
UM
159.00
UN
148.00
EH
154.00
RX
159.00
TU
148.33
NI
154.00
Q
159.00
CM
• = No data submitted
TAG SYMBOLS
ft = Above control limit
0 s Insufficient data
x = Determined to be an outlier
JJ. = Below control limit
-------
19/52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Zinc-65
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
159.00
BK
162.00
RR
169.33
MP
159.33
QZ
162.00
OT
170.00
QB
159.33
PI
162.00
OL
171.67
GI
159.33
OM
162.00
N
172.33
DR
159.33
MS
162.00
DG
173.33
RA
159.33
AU
162.00
CP
173.33
D
159.33
AK
162.33
ML
174.00
CQ
159.67
PW
162.67
SI
174.33
EB
159.67
J
162.67
S
176.67
IT
FL
159.67
BN
162.67
O
177.00
JY
160.00
sz
163.00
IC
177.33
tr
JS
160.00
MV
163.00
CO
178.33
i?
LA
160.00
BO
163.67
TI
178.33
IT
HP
160.33
WA
163.67
TB
179.67
tr
K
160.33
TG
163.67
QJ
190.33
X
DJ
160.33
QP
164.00
RC
192.00
X
LR
160.33
BM
164.33
UX
209.00
X
EN
160.67
SF
165.33
PQ
227.33
X
GO
160.67
DD
165.33
NH
246.67
X
BW
161.00
TO
165.33
IU
444.67
X
PP
161.00
CS
166.00
RL
786.67
X
TC
161.33
UY
166.67
CX
1181.00
X
SN
161.67
TQ
167.67
RZ
1295.00
X
EZ
161.67
PC
168.00
LE
1300.67
X
VC
161.67
MA
168.33
QL
1360.33
X
MT
161.67
KL
168.67
QX
1390.00
X
VE
% responding labs
Frequency distribution
10-
T-
-4
.niliiii
llfUUli
_ai
-6
% responding labs
-2 0 +2
Normalized deviation of the mean from the known value
Frequency distribution
+4
+6
10-
fl.
'.5
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
It = Above control limit
11 = Below control limit
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 20 / 52
r " ' " 1 " >
Ruthenium-106 Statistical Summary 229 Participants
The known value of this nuclide is 201.0 pCiA with an expected precision of 20.0; the control limits
are 166.3 to 235.7; the warning regions are 166.3 to 177.8 and 224.2 to 235.7
Statistic Respondents Non-outliers
Mean
213.00
Grand Avg 175.18
Std. Dev.
215.64
18.32
Variance
46501.37
335.52
% Coef. of Var.
101.24
10.46
% deviation of mean from known value
5.97
-12.85
Norm. dev. of mean from known value
0.06
-1.41
Median
178.33
178.33
% deviation of median from known value
-11.28
-11.28
Norm. dev. of median from known value
-0.11
-1.24
-------
('
21 / 52 EMSL-LV Performance Evaluation: Gamma in Water,
12-Nov-1993
Ruthenium-106
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
164.0
183.0
199.0
17.52
1.064
182.00
0.59
-1.65
AA
177.0
174.0
171.0
3.00
0.177
174.00
i
©
o
-2.34
AE
188.0
178.0
183.0
5.00
0.295
183.00
0.68
-1.56
AF
151.0
161.0
173.0
11.02
0.650
161.67
-1.17
-3.41
AI
•
AJ
176.0
186.0
173.0
6.81
0.384
178.33
0.27
-1.96
AK
184.0
192.0
187.0
4.04
0.236
187.67
1.08
-1.15
AL
187.0
182.0
178.0
4.51
0.266
182.33
0.62
-1.62
AN
167.0
150.0
162.0
8.74
0.502
159.67
-1.34
-3.58
AP
196.0
190.0
209.0
9.71
0.561
198.33
2.01
-0.23
AU
160.0
160.0
160.0
0.00
0.000
160.00
-1.31
-3.55
U
AW
177.0
169.0
165.0
6.11
0.354
170.33
-0.42
-2.66
AY
194.0
209.0
199.0
7.64
0.443
200.67
2.21
-0.03
AZ
81.0
78.0
70.0
5.69
0.326
76.33
-&56
-10;80
X
BA
172.0
179.0
192.0
10.15
0.591
181.00
0.50
-1.73
BB
186.0
187.0
190.0
2.08
0.118
187.67
1.08
-1.15
BC
178.0
183.0
181.0
2.52
0.148
180.67
0.48
-1.76
BG
¦- #.
BH
161.0
162.0
167.0
3.21
0.177
163.33
-1.03
-3.26
BI
179.0
180.0
180.0
0.58
0.030
179.67
0.39
-1.85
BK
190.0
195.0
190.0
2.89
0.148
191.67
1.43
-0.81
BL
179.0
182.0
186.0
3.51
0.207
182.33
0.62
-1.62
BM
175.0
171.0
173.0
2.00
0.118
173.00
-0.19
-2.42
BN
206.0
174.0
208.0
19.08
1.008
196.00
1.80
-0.43
BO
162.0
177.0
171.0
7.55
0.443
170.00
-0.45
-2.68
BW
~
C
190.0
190.0
188.0
1.15
0.059
189.33
1.23
-1.01
CA
162.0
161.0
167.0
3.21
0.177
163.33
-1.03
-3.2R
U
CC
V
CE
178.0
187.0
216.0
19.86
1.233
193.67
1.60
-0.64
CG
•
CJ
183.0
172.0
177.0
5.51
0.325
177.33
0.19
-2.05
CK
142.0
158.0
167.0
12.66
0.738
155.67
-1.69
-3.93
CM
179.0
165.0
170.0
7.09
0.413
171.33
-0.33
-2.57
CO
209.0
180.0
205.0
15.72
0.856
198.00
1.98
-0.26
CP
187.0
191.0
193.0
3.06
0.177
190.33
1.31
-0.92
CQ
172.0
181.0
176.0
4.51
0.266
176.33
0.10
-2.14
CS
176.0
190.0
174.0
8.72
0.473
180.00
0.42
-1.82
CX
193.0
180.0
201.0
10.60
0.620
191.33
1.40
-0.84
D
182.0
178.0
196.0
9.45
0.532
185.33
0.88
-1.36
DD
182.0
180.0
184.0
2.00
0.118
182.00
0.59
-1.65
DE
192.0
193.0
194.0
1.00
0.059
193.00
1.54
-0.69
DG
170.0
177.0
165.0
6.03
0.354
170.67
-0.39
-2.63
DH
177.0
177.0
181.0
2.31
0.118
178.33
0.27
-1.96
DJ
159.0
201.0
172.0
21.50
1.458
177.33
0.19
-2.05
• =
No data submitted
TAG SYMBOLS
It = Above control limit
0 =
^
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
'J
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 22 / 52
c
Rutheni um-106
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
172.0
177.0
188.0
8.19
0.473
179.00
0.33
-1.91
DM
165.0
161.0
161.0
2.31
0.118
162.33
-1.11
-3.35
DO
224.0
162.0
174.0
32.88
2.583
186.67
1.00
-1.24
DR
199.0
207.0
177.0
15.53
0.886
194.33
1.66
-0.58
DT
165.0
136.0
201.0
32.56
2.752
167.33
-0.68
-2.92
DY
•
DZ
190.0
170.0
190.0
11.55
0.591
183.33
0.71
-1.53
E
174.0
187.0
186.0
7.23
0.384
182.33
0.62
-1.62
EA
205.0
202.0
200.0
2.52
0.148
202.33
2.35
0.12
EB
193.0
194.0
193.0
0.58
0.030
193.33
1.57
-0.66
EH
170.0
176.0
177.0
3.79
0.207
174.33
-0.07
-2.31
EL
170.0
161.0
166.0
4.51
0.266
165.67
-0.82
-3.06
EN
200.0
232.0
233.0
18.77
0.975
221.67
4.03
1.79
EW
EX
200.0
224.0
184.0
20.13
1.345
202.67
2.38
0.14
EZ
1411,0
1548.0
1686.0
137.60
14.565
1548.33
118,92
116.68
X
FE
114.0
146.0
129.0
16.01
0.945
129.67
-3.94
-6.18
u
PJ
349,0
360.0
314.0
24.02
1.683
341.00
14,36
12,12
X
FK
159.0
159.0
159.0
0.00
0.000
159.00
-1.40
-3.64
Ji
FL
205.0
156.0
180.0
24.50
1.852
180.33
0.45
-1.79
FU
153.0
166.0
173.0
10.15
0.591
164.00
-0.97
-3.20
u
FZ
110.0
74.0
90.0
18.04
1.120
91.33
-7;26
-9.50
X
GE
172.0
177.0
188.0
8.19
0.473
179.00
0.33
-1.91
GI
176.0
175.0
159.0
9.54
0.502
170.00
-0.45
-2.68
OL
•
GO
•
GQ
HE
178.0
186.0
188.0
5.29
0.295
184.00
0.76
-1.47
m
167.0
172.0
207.0
21.79
1.345
182.00
0.59
-1.65
HJ
175.0
195.0
202.0
14.01
0.797
190.67
1.34
-0.89
HK
171.0
184.0
159.0
12.50
0.738
171.33
-0.33
-2.57
HL
184.0
185.0
178.0
3.79
0.207
182.33
0.62
-1.62
HP
195.0
197.0
206.0
5.86
0.325
199.33
2.09
-0.14
HU
187.0
185.0
190.0
2.52
0.148
187.33
1.05
-1.18
HX
•
I
136.0
161.0
174.0
19.31
1.233
157.00
-1.57
-3.81
n
IA
207.0
160.0
179.0
23.64
1.739
182.00
0.59
-1.65
IC
TT
163.0
150.0
136.0
13.50
0.797
149.67
-2.21
-4.45
u
¦ J1
IU
200.0
202.0
189.0
7.00
0.384
197.00
1.89
-0.35
•
J
183.0
176.0
153.0
15.70
0.886
170.67
-0.39
-2.63
eJE
174.0
164.0
171.0
5.13
0.295
169.67
-0.48
-2.71
JG
.n-
165.0
173.0
175.0
5.29
0.295
171.00
-0.36
-2.60
tMM.
JR
162.0
180.0
175.0
9.29
0.532
172.33
-0.25
-2.48
•
• =
0 3
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
li s Below control limit
-------
23 / 52 EMSL-LV Performance Evaluation: Gamma in Water,
12-Nov-1993
Ruthenium-106
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
221.0
263.0
257.0
22.72
1.458
247.00
6.22
3.98
X
JY
202.0
231.0
200.0
17.35
0.916
211.00
3.10
0.87
K
160.0
157.0
171.0
7.37
0.413
162.67
-1.08
-3.32
li
KF
•
KH
207.0
196.0
196.0
6.35
0.325
199.67
2.12
-0.12
KL
160.0
162.0
158.0
2.00
0.118
160.00
-1.31
-3.55
U
KM
195.0
203.0
202.0
4.36
0.236
200.00
2.15
-0.09
KX
213.0
194.0
192.0
11.59
0.620
199.67
2.12
-0.12
L
162.0
165.0
159.0
3.00
0.177
162.00
-1.14
-3.38
LA
•
LE
148.0
192.0
142.0
27.30
1.908
160.67
-1.26
-3.49
LF
180.0
170.0
200.0
15.28
0.886
183.33
0.71
-1.53
LM
~
LR
134.0
153.0
161.0
13.87
0.797
149.33
-2.24
-4.47
II
LT
205.0
205.0
2Q5.0
0.00
0.000
205.00
2.58
0.35
M
163.0
168.0
169.0
3.21
0.177
166.67
-0.74
-2.97
MA
153.0
159.0
154.0
3.21
0.177
155.33
-1.72
-3.95
u
ML
157.0
150.0
163.0
6.51
0.384
156.67
-1.60
-3.84
li
MN
»
MP
185.0
173.0
172.0
7.23
0.384
176.67
0.13
-2.11
MQ
165.0
193.0
191.0
15.62
0.827
183.00
0.68
-1.56
MS
174.0
174.0
166.0
4.62
0.236
171.33
-0.33
-2.57
MT
1395.0
1395:0
1392.0
1.73
0.089
1394.00
105.55
103.32
X
MV
189.0
175.0
200.0
12.53
0.738
188.00
1.11
-1.13
MY
102.0
110.0
105.0
4.04
0.236
105.67
-6.02
-8.26
X
N
188.0
191.0
218.0
16.52
0.886
199.00
2.06
-0.17
NB
180.0
172.0
191.0
9.54
0.561
181.00
0.50
-1.73
NH
183.0
182.0
178.0
2.65
0.148
181.00
0.50
-1.73
NI
154.0
113.0
131.0
20.55
1.402
132.67
-3.68
-5.92
u
NJ
175.0
165.0
175.0
5.77
0.295
171.67
-0.30
-2.54
NK
106.0
122.0
121.0
8.96
0.473
116.33
-5.10
-7.33
u
NP
167.0
159.0
162.0
4.04
0.236
162.67
-1.08
-3.32
u
NZ
167.0
151.0
180.0
14.53
0.856
166.00
-0.79
-3.03
11
0
196.0
200.0
200.0
2.31
0.118
198.67
2.03
-0.20
OA
184.0
189.0
183.0
3.21
0.177
185.33
0.88
-1.36
OB
•
OK
192.0
199.0
200.0
4.36
0.236
197.00
1.89
-0.35
OL
256.0
256.0
256.0
0.00
0.000
266.00
7.00
4.76
X
OM
174.0
175.0
180.0
3.21
0.177
176.33
0.10
-2.14
OT
132.0
229.0
190.0
48.81
4.552
183.67
0.74
-1.50
OZ
•
PB
188.0
206.0
213.0
12.90
0.738
202.33
2.35
0.12
PC
152.0
161.0
170.0
9.00
0.532
161.00
-1.23
-3.46
PD
PE
228.0
198.0
205.0
15.70
0.886
210.33
3.04
0.81
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
1 0 -
^
Insufficient data
x =
Determined to be an outlier
I s Below control limit
JJ
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 24/52
Rutheni urn-106
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PI
165.0
172.0
163.0
4.73
0.266
166.67
-0.74
-2.97
PM
•
PP
692.0
687.0
603.0
56.67
5.002
627.33
39; 16
36:92
X
PQ
164.0
148.0
162.0
8.72
0.473
158.00
-1.49
-3.72
u
PT
185.0
163.0
168.0
11.53
0.650
172.00
-0.28
-2.51
PU
•
PV
172.0
163.0
163.0
5.20
0.266
166.00
-0.79
-3.03
PW
163.0
175.0
155.0
10.07
0.591
164.33
-0.94
-3.18
u
PX
183.0
201.0
182.0
10.69
0.561
188.67
1.17
-1.07
PY
Q
151.0
149.0
158.0
4.73
0.266
152.67
-1.95
-4.19
QB
180.0
196.0
214.0
17.01
1.008
196.67
1.86
-0.38
QJ
166.0
191.0
195.0
15.72
0.856
184.00
0.76
-1.47
QK
QL
146.0
146.0
170.0
13.86
0.709
154.00
-1.83
-4.07
QM
322;0
341.0
349.0
13;87
0.797
337.33
14,04
11.81
X
QP
185.0
187.0
195.0
5.29
0.295
189.00
1.20
-1.04
QQ
•
QT
178.0
175.0
183.0
4.04
0.236
178.67
0.30
-1.93
QU
66i0
36.0
46.0
10.00
0.591
46.00
11.19
-1342
X
QX
179.0
188.0
185.0
4.58
0.266
184.00
0.76
-1.47
QZ
173.0
172.0
160.0
7.23
0.384
168.33
-0.59
-2.83
R
187.0
183.0
188.0
2.65
0.148
186.00
0.94
-1.30
RA
189.0
192.0
187.0
2.52
0.148
189.33
1.23
-1.01
RC
149.0
150.0
149.0
0.58
0.030
149.33
-2.24
-4.47
u
RF
174.0
157.0
181.0
12.34
0.709
170.67
-0.39
-2.63
RH
187.0
166.0
181.0
10.82
0.620
178.00
0.24
-1.99
RK
134.0
169.0
176.0
22.50
1.458
159.67
-1.34
-3.58
u
RL
120.0
120.0
120.0
0.00
0.000
120.00
-4.78
-7.01
u
RM
145.0
140.0
148.0
4.04
0.236
144.33
-2.67
-4.91
u
RO
168.0
178.0
179.0
6.08
0.325
175.00
-0.02
-2.25
RQ
•
RR
169.0
152.0
168.0
9.54
0.502
163.00
-1.05
-3.29
RV
179.0
119.0
151.0
30.02
2.470
149.67
-2.21
-4.45
u
RX
200.0
186.0
192.0
7.02
0.413
192.67
1.51
-0.72
RZ
164.0
194.0
189.0
16.07
0.886
182.33
0.62
-1.62
S
177.0
171.0
178.0
3.79
0.207
175.33
0.01
-2.22
SA
•
SC
172.0
188.0
180.0
8.00
0.473
180.00
0.42
-1.82
SD
146.0
128.0
137.0
9.00
0.532
137.00
-3.31
-5.54
SF
178.0
169.0
189.0
10.02
0.591
178.67
0.30
-1.93
SI
195.0
154.0
164.0
21.38
1.402
171.00
-0.36
-2.60
SK
24.0
24.0
32.0
4.62
0.236
26.67
-12.86
-16*10
¦X'
SM
161.0
142.0
149.0
9.61
0.561
150.67
-2.12
-4.36
u
SN
leseiO
1533.0
1703.0
120.44
12.034
1627^33
125.76
I23s52
X
• s
0 3
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
= Below control limit
-------
^ — •
25 / 52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Ruthenium-106
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SR
168.0
155.0
148.0
10.15
0.591
157.00
-1.57
-3.81
U
ss
175.0
175.0
185.0
5.77
0.295
178.33
0.27
-1.96
ST
153.0
141.0
154.0
7.23
0.384
149.33
-2.24
-4.47
U
su
•
sv
139.0
196.0
146.0
31.09
2.302
160.33
-1.29
-3.52
u
sw
185.0
186.0
185.0
0.58
0.030
185.33
0.88
-1.36
sz
192.0
193.0
191.0
1.00
0.059
192.00
1.46
-0.78
T
158.0
149.0
150.0
4.93
0.266
152.33
-1.98
-4.21
Ji
TA
222.0
166.0
186.0
28.38
2.245
191.33
1.40
-0.84
TB
188.0
221.0
184.0
20.31
1.177
197.67
1.95
-0.29
TC
506.0
510.0
510.0
5.51
0.325
510.33
29.03
26.79
X
TD
97.0
96.0
108.0
7.00
0.384
100.00
-6.61
-8:75
X
TE
•
TG
183.0
171.0
183.0
6.93
0.354
179.00
0.33
-1.91
TH
166.0
166.0
166.0
0.00
0.000
166.00
-0.79
-3.03
U
TI
157.0
152.0
164.0
6.03
0.354
157.67
-1.52
-3.75
u
TK
106.0
117.0
132.0
13.05
0.768
118.33
-4.92
-7.16
u
TL
237.0
213.0
193.0
22.03
1.570
214.33
3.39
1.15
TO
181.0
193.0
169.0
12.00
0.709
181.00
0.50
-1.73
TQ
162.0
159.0
151.0
5.69
0.325
157.33
-1.55
-3.78
u
TR
165.0
212.0
174.0
24.95
1.739
183.67
0.74
-1.50
TS
132.0
135.0
133.0
1.53
0.089
133.33
-3.62
-5.86
a
TT
•
TU
196.0
190.0
193.0
3.00
0.177
193.00
1.54
-0.69
TV
•
TW
•
U
154.0
160.0
166.0
6.00
0.354
160.00
-1.31
-3.55
UB
•
UC
• -
UE
160.0
165.0
181.0
10.97
0.620
168.67
-0.56
-2.80
UI
204.0
207.0
202.0
2.52
0.148
204.33
2.52
0.29
UK
*
UM
183.0
175.0
177.0
4.16
0.236
178.33
0.27
-1.96
UN
188.0
188.0
192.0
2.31
0.118
189.33
1.23
-1.01
UP
167.0
170.0
171.0
2.08
0.118
169.33
-0.51
-2.74
UR
•
UT
•
UV
179.0
178.0
154.0
14.15
0.738
170.33
-0.42
-2.66
UW
173.0
190.0
205.0
16.01
0.945
189.33
1.23
-1.01
UX
174.0
166.0
160.0
7.02
0.413
166.67
-0.74
-2.97
UY
166.0
157.0
161.0
4.51
0.266
161.33
-1.20
-3.44
u
VA
•
vc
1638.0
1307.0
1374.0
175.00
17.715
1439.67
109.51
107.27
X
VE
1480:0
1240.0
1450.0
130.77
12.596
1390.00
105.21
102-97
X
W
•
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
0 —
^
Insufficient data
X S
Determined to be an outlier
II — Below control limit
jj
-------
-
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
^
26/52
Ruthenium-106
•
Lab Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg)
(known) Tag
WA 144.0
154.0
148.0 5.03
0.295
148.67
2.30
-4.53
II
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 Averaj
fe
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
26.67
X
SK
160.00
II
KL
171.33
HK
46.00
X
QU
160.00
II
AU
171.33
CM
76.33
X
AZ
160.33
II
SV
171.67
NJ
91.33
X
FZ
160.67
II
LE
172.00
PT
100.00
X
TD
161.00
II
PC
172.33
JR
105.67
X
MY
161.33
II
UY
173.00
BM
116.33
u
NK
161.67
U
AF
174.00
AA
118.33
II
TK
162.00
U
L
174.33
EH
120.00
II
RL
162.33
U
DM
175.00
RO
129.67
II
FE
162.67
II
NP
175.33
S
132.67
u
NI
162.67
II
K
176.33
OM
133.33
U
TS
163.00
II
RR
176.33
CQ
137.00
U
SD
163.33
II
CA
176.67
MP
144.33
U
RM
163.33
II
BH
177.33
DJ
148.67
II
WA
164.00
11
FU
177.33
CJ
149.00
II
X
164.33
u
PW
178.00
RH
149.33
II
ST
165.67
II
EL
178.33
UM
149.33
II
RC
166.00
II
TH
178.33
ss
149.33
U
LR
166.00
II
PV
178.33
DH
149.67
II
RV
166.00
11
NZ
178.33
AJ
149.67
U
IC
166.67
ux
178.67
Y
150.67
u
SM
166.67
PI
178.67
SF
152.33
U
Z
166.67
M
178.67
QT
152.33
IL
T
167.33
DT
179.00
TG
152.67
U
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
u
CK
169.67
JE
180.00
SC
156.67
u
ML
170.00
GI
180.00
CS
157.00
u
SR
170.00
BO
180.33
FL
157.00
u
I
170.33
UV
180.67
BC
157.33
u
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
u
FK
170.67
DG
181.00
BA
159.67
n
RK
171.00
SI
182.00
IA
159.67
u
AN
171.00
JG
182.00
HI
160.00
u
U
171.33
MS
182.00
DD
• s No data submitted
TAG SYMBOLS
IT
2 Above control limit
0 = Insufficient data
Vi
x = Determined to be an outlier
II
s Below control limit
-------
27/52
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Ruthenium-106
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
182.00
A
189.00
QP
199.00
N
182.33
RZ
189.33
uw
199.33
HP
182.33
HL
189.33
UN
199.67
KX
182.33
E
189.33
RA
199.67
KH
182.33
BL
189.33
C
200.00
KM
182.33
AL
190.33
CP
200.67
AY
183.00
MQ
190.67
HJ
202.33
PB
183.00
AE
191.33
TA
202.33
EA
183.33
LF
191.33
CX
202.67
EX
183.33
DZ
191.67
BK
204.33
UI
183.67
TR
192.00
SZ
205.00
LT
183.67
OT
192.67
RX
210.33
PE
184.00
QX
193.00
TU
211.00
JY
184.00
QJ
193.00
DE
214.33
TL
184.00
HE
193.33
EB
221.67
EN
185.33
SW
193.67
CE
247.00
X
JS
185.33
OA
194.33
DR
256.00
X
OL
185.33
D
196.00
BN
337.33
X
QM
186.00
R
196.67
QB
341.00
X
FJ
186.67
DO
197.00
OK
510.33
X
TC
187.33
HU
197.00
IU
627.33
X
PP
187.67
BB
197.67
TB
1390.00
X
VE
187.67
AK
198.00
CO
1394.00
X
MT
188.00
MV
198.33
AP
1439.67
X
VC
188.67
PX
198.67
O
1548.33
1627.33
X
X
EZ
SN
10
responding labs
Frequency distribution
-4 -2 0
-2 0 *2
Normalized deviation of the mean from the known value
10
responding labs Frequency distribution
+6
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted TAG SYMBOLS 1t s Above control limit
0 = Insufficient data x s Determined to be an outlier W = Below control limit
1 ¦¦ 1 ¦ ¦ ' 1 " — ¦ ¦ 1 ¦¦¦ v
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 28 / 52
~ ¦ 1 ¦— ' . ¦¦ i i. .i ~
Cesium-134 Statistical Summary 229 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
Statistic Respondents Non-outliers
Mean
64.88
Grand Avg 54.42
Std. Dev.
63.91
4.53
Variance
4084.96
20.48
% Coef. of Var.
98.52
8.32
% deviation of mean from known value
9.96
-7.77
Norm. dev. of mean from known value
0.09
-1.01
Median
54.33
54.33
% deviation of median from known value
-7.91
-7.91
Norm. dev. of median from known value
-0.07
-1.03
-------
f
29/52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
^
Cesium-134
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
52.0
55.0
58.0
3.00
0.709
55.00
0.20
-1.39
AA
51.0
50.0
50.0
0.58
0.118
50.33
-1.41
-3.00
AE
56.0
55.0
57.0
1.00
0.236
56.00
0.55
-1.04
AF
57.0
53.0
55.0
2.00
0.473
55.00
0.20
-1.39
At
•
AJ
60.0
60.0
60.0
0.00
0.000
60.00
1.93
0.35
AK
57.0
55.0
55.0
1.15
0.236
55.67
0.43
-1.15
AL
62.0
61.0
67.0
3.21
0.709
63.33
3.09
1.50
AN
55.0
56.0
51.0
2.65
0.591
54.00
-0.14
-1.73
AP
55.0
55.0
56.0
0.58
0.118
55.33
0.32
-1.27
AU
54.0
53.0
52.0
1.00
0.236
53.00
-0.49
-2.08
AW
45.0
45.0
46.0
0.58
0.118
45.33
-3.15
-4.73
u
AY
62.0
62.0
60.0
1.15
0.236
61.33
2.40
0.81
AZ
30.0
28.0
27.0
1.53
0.354
28.33
-9.04
-10.62
X
BA
49.0
50.0
48.0
1.00
0.236
49.00
-1.88
-3.46
U
BB
54.0
54.0
54.0
0.00
0.000
54.00
-0.14
-1.73
BC
51.0
56.0
49.0
3.61
0.827
52.00
-0.84
-2.42
BG
•
BH
51.0
54.0
52.0
1.53
0.354
52.33
-0.72
-2.31
BI
62.0
68.0
65.0
3.00
0.709
65.00
3.67
2.08
BK
59.0
60.0
63.0
2.08
0.473
60.67
2.16
0.58
BL
55.0
55.0
55.0
0.00
0.000
55.00
0.20
-1.39
BM
55.0
54.0
56.0
1.00
0.236
55.00
0.20
-1.39
BN
52.0
55.0
58.0
3.00
0.709
55.00
0.20
-1.39
BO
52.0
53.0
52.0
0.58
0.118
52.33
-0.72
-2.31
BW
90.0
99.0
110.0
10.02 •:
3.596
99.67
16.67
14.09
X
C
57.0
56.0
58.0
1.00
0.236
57.00
0.89
-0.69
CA
47.0
49.0
58.0
5.86
1.570
51.33
-1.07
-2.66
CC
•
CE
55.0
57.0
58.0
1.53
0.354
56.67
0.78
-0.81
CG
29.0
30.0
37:o
4.36
0.945
34.00
-7.07
-8.60
X
CJ
50.0
59.0
51.0
4.93
1.120
53.33
. -0.38
-1.96
CK
54.0
53.0
50.0
2.08
0.473
52.33
-0.72
-2.31
CM
44.0
41.0
42.0
1.53
0.354
42.33
-4.19
-5.77
11
CO
51.0
53.0
52.0
1.00
0.236
52.00
-0.84
-2.42
CP
55.0
54.0
55.0
0.58
0.118
54.67
0.09
-1.50
CQ
55.0
63.0
63.0
4.62
0.945
60.33
2.05
0.46
CS
54.0
52.0
54.0
1.15
0.236
53.33
-0.38
-1.96
CX
57.0
59.0
59.0
1.15
0.236
58.33
1.36
-0.23
D
56.0
57.0
61.0
2.65
0.591
58.00
1.24
-0.35
DD
56.0
55.0
57.0
1.00
0.236
56.00
0.55
-1.04
DE
54.0
54.0
55.0
0.58
0.118
54.33
-0.03
-1.62
OG
53.0
51.0
55.0
2.00
0.473
53.00
-0.49
-2.08
DH
64.0
64.0
62.0
1.15
0.236
63.33
3.09
1.50
DJ
67.0
67.0
72.0
2.89
0.591
68.67
4.94
3.35
it
• =
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: Gamma in Water, 12-Nov-1993 30 / 52
{ ==
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
OL
55.0
54.0
56.0
1.00
0.236
55.00
0.20
-1.39
DM
57.0
64.0
55.0
4.73
1.120
58.67
1.47
-0.12
DO
54.0
57.0
49.0
4.04
0.945
53.33
-0.38
-1.96
DR
56.0
55.0
57.0
1.00
0.236
56.00
0.55
-1.04
DT
63.0
56.0
62.0
3.79
0.827
60.33
2.05
0.46
DY
•
DZ
61.0
60.0
56.0
2.65
0.591
59.00
1.59
0.00
E
54.0
55.0
57.0
1.53
0.354
55.33
0.32
-1.27
EA
53.0
53.0
52.0
0.58
0.118
52.67
-0.61
-2.19
EB
56.0
56.0
56.0
0.00
0.000
56.00
0.55
-1.04
EH
50.0
51.0
55.0
2.65
0.591
52.00
-0.84
-2.42
EL
57.0
58.0
57.0
0.58
0.118
57.33
1.01
-0.58
EN
58.0
60.0
58.0
1.15
0.236
58.67
1.47
-0.12
EW
• -
EX
57.0
59.0
62.0
2.52
0.591
59.33
1.70
0.12
EZ
460;0
520.0
467.0
35.64
13.271
479.00
147.08
145.49
X
FE
51.0
51.0
52.0
0.58
0.118
51.33
-1.07
-2.66
FJ
54.0
53.0
56.0
1.53
0.354
54.33
-0.03
-1.62
FK
51.0
51.0
51.0
0.00
0.000
51.00
-1.18
-2.77
FL
65.0
61.0
63.0
2.00
0.473
63.00
2.97
1.39
FU
54.0
54.0
56.0
1.15
0.236
54.67
0.09
-1.50
FZ
28.0
26.0
27.0
1.53
0.354
26.67
-9.61
-11.20
X
GE
55.0
54.0
56.0
1.00
0.236
55.00
0.20
-1.39
GI
62.0
59.0
54.0
4.04
0.945
58.33
1.36
-0.23
GL
•
GO
. •
GQ
•'
HE
57.0
55.0
57.0
1.15
0.236
56.33
0.66
-0.92
m
48.0
56.0
46.0
5.29
1.345
50.00
-1.53
-3.12
Ji
HJ
58.0
60.0
62.0
2.00
0.473
60.00
1.93
0.35
HK
55.0
53.0
54.0
1.00
0.236
54.00
-0.14
-1.73
HL
57.0
56.0
57.0
0.58
0.118
56.67
0.78
-0.81
HP
61.0
62.0
64.0
1.53
0.354
62.33
2.74
1.15
HU
47.0
46.0
48.0
1.00
0.236
47.00
-2.57
-4.16
U
HX
•
I
56.0
56.0
55.0
0.58
0.118
55.67
0.43
-1.15
IA
52.0
61.0
61.0
5.20
1.120
58.00
1.24
-0.35
IC
n
64.0
61.0
61.0
1.73
0.354
62.00
2.63
1.04
IU
58.0
61.0
59.0
1.53
0.354
59.33
1.70
0.12
•
J
55.0
51.0
51.0
2.31
0.473
52.33
-0.72
-2.31
JE
49.0
50.0
50.0
0.58
0.118
49.67
-1.65
-3.23
JG
48.0
49.0
48.0
0.58
0.118
48.33
-2.11
-3.70
li
JI
•
JR
57.0
52.0
53.0
2.65
0.591
54.00
-0.14
-1.73
• 3 No data submitted TAG SYMBOLS IT s Above control limit
0 = Insufficient data x = Determined to be an outlier -It = Below control limit
-------
'
31/52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Cesium-134
N
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
IR + SR)
Average
(grand-avg)
(known) Tag
JS
52.0
61.0
59.0
4.73
1.120
57.33
1.01
-0.58
JY
55.0
55.0
54.0
0.58
0.118
54.67
0.09
-1.50
K
50.0
57.0
48.0
4.73
1.120
51.67
-0.95
-2.54
KF
•
KH
51.0
56.0
55.0
2.65
0.591
54.00
-0.14
-1.73
KL
56.0
56.0
58.0
1.15
0.236
56.67
0.78
-0.81
KM
54.0
54.0
55.0
0.58
0.118
54.33
-0.03
-1.62
KX
78.0
74.0
77.0
2.08
0.473
76.33
7.59
6.00
X
L
54.0
54.0
53.0
0.58
0.118
53.67
-0.26
-1.85
LA
•
LE
47.0
47.0
57.0
5.77
1.345
50.33
-1.41
-3.00
LF
57.0
54.0
56.0
1.53
0.354
55.67
0.43
-1.15
LM
> •
LR
75.0
69.0
72.0
3.00
0.709
72.00
6.09
4.50
X
LT
60.0
60.0
60.0
0.00
0.000
60.00
1.93
0.35
M
49.0
50.0
50.0
0.58
0.118
49.67
-1.65
-3.23
li
MA
53.0
53.0
54.0
0.58
0.118
53.33
-0.38
-1.96
ML
50.0
51.0
50.0
0.58
0.118
50.33
-1.41
-3.00
MN
*
MP
60.0
61.0
56.0
2.65
0.591
59.00
1.59
0.00
MQ
53.0
55.0
53.0
1.15
0.236
53.67
-0.26
-1.85
MS
59.0
59.0
59.0
0.00
0.000
59.00
1.59
0.00
MT
465.0
453.0
451.0
2.00
0.473
463.00
138*07
136.49
X
MV
52.0
54.0
59.0
3.61
0.827
55.00
0.20
-1.39
MY
47.0
47.0
46.0
0.58
0.118
46.67
-2.68
-4.27
11
N
56.0
57.0
54.0
1.53
0.354
55.67
0.43
-1.15
NB
62.0
67.0
63.0
2.65
0.591
64.00
3.32
1.73
NH
52.0
53.0
52.0
0.58
0.118
52.33
-0.72
-2.31
NI
50.0
40.0
44.0
5.03
1.345
44.67
-3.38
-4.97
li
NJ
51.0
50.0
50.0
0.58
0.118
50.33
-1.41
-3.00
NK
41.0
51.0
41.0
5.77
1.345
44.33
-3.49
-5.08
u
NP
54.0
58.0
50.0
4.00
0.945
54.00
-0.14
-1.73
NZ
48.0
50.0
50.0
1.15
0.236
49.33
-1.76
-3.35
u
O
56.0
56.0
56.0
0.00
0.000
56.00
0.55
-1.04
OA
55.0
55.0
55.0
0.00
0.000
55.00
0.20
-1.39
OB
•
OK
60.0
61.0
62.0
1.00
0.236
61.00
2.28
0.69
OL
49.0
49.0
49.0
0.00
0.000
49.00
-1.88
-3.46
li
OM
54.0
58.0
55.0
2.08
0.473
55.67
0.43
I
Of
OT
67.0
62.0
58.0
4.51
1.120
62.33
2.74
1.15
OZ
•
PB
54.0
53.0
53.0
0.58
0.118
53.33
-0.38
-1.96
PC
55.0
58.0
60.0
2.52
0.591
57.67
1.13
-0.46
PD
PE
60.0
57.0
57.0
1.73
0.354
58.00
1.24
-0.35
• =
No data submitted
TAG SYMBOLS
ff = Above control limit
0 =
vs-=-
Insufficient data
x =
Determined to be an outlier
It = Below control limit
¦ 1 ¦ 'V
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 32/52
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tng
PI
52.0
51.0
54.0
1.53
0.354
52.33
•0.72
-2.31
PM
41.0
41.0
47.0
3.46
0.709
43.00
-3.96
-5.54
U
PP
188.0
142.0
179.0
24.38
9.446
169.67
39;92
38.34
X
PQ
60.0
61.0
61.0
0.58
0.118
60.67
2.16
0.58
PT
53.0
46.0
52.0
3.79
0.827
50.33
-1.41
-3.00
PU
•
PV
53.0
49.0
54.0
2.65
0.591
52.00
-0.84
-2.42
PW
54.0
55.0
54.0
0.58
0.118
54.33
-0.03
-1.62
PX
57.0
56.0
56.0
0.58
0.118
56.33
0.66
-0.92
PY
•
Q
50.0
48.0
50.0
1.15
0.236
49.33
-1.76
-3.35
QB
57.0
62.0
59.0
2.52
0.591
59.33
1.70
0.12
QJ
47.0
53.0
50.0
3.00
0.709
50.00
-1.53
-3.12
QK
•-
QL
52.0
52.0
52.0
0.00
0.000
52.00
-0.84
-2.42
QM
47.0
48.0
50.0
1.53
0.354
48.33
-2.11
-3.70
QP
51.0
59.0
54.0
4.04
0.945
54.67
0.09
-1.50
QQ
•
QT
52.0
54.0
54.0
1.15
0.236
53.33
-0.38
-1.96
QU
19.0
16.0
17.0
1.53
0.354
17.33
-12.85
-14,43
X
QX
60.0
67.0
63.0
3.51
0.827
63.33
3.09
1.50
QZ
51.0
51.0
50.0
0.58
0.118
50.67
-1.30
-2.89
R
53.0
55.0
54.0
1.00
0.236
54.00
-0.14
-1.73
RA
63.0
62.0
61.0
1.00
0.236
62.00
2.63
1.04
RC
55.0
55.0
55.0
0.00
0.000
55.00
0.20
-1.39
RF
50.0
52.0
47.0
2.52
0.591
49.67
-1.65
-3.23
u
RH
56.0
54.0
53.0
1.53
0.354
54.33
-0.03
-1.62
RK
50.0
50.0
50.0
0.00
0.000
50.00
-1.53
-3.12
Jl
RL
51.0
51.0
51.0
0.00
0.000
51.00
-1.18
-2.77
RM
59.0
58.0
65.0
3.79
0.827
60.67
2.16
0.58
RO
53.0
50.0
52.0
1.53
0.354
51.67
-0.95
-2.54
RQ
» '
RR
54.0
55.0
56.0
1.00
0.236
55.00
0.20
-1.39
RV
49.0
50.0
52.0
1.53
0.354
50.33
-1.41
-3.00
RX
39i0
43.0
28.0
7.77
2.470
36.67
-6.15
-7.74
X
RZ
59.0
59.0
60.0
0.58
0.118
59.33
1.70
0.12
S
56.0
57.0
56.0
0.58
0.118
56.33
0.66
-0.92
SA
•
sc
52.0
53.0
53.0
0.58
0.118
52.67
-0.61
-2.19
SD
52.0
49.0
51.0
1.53
0.354
50.67
-1.30
-2.89
SF
55.0
53.0
52.0
1.53
0.354
53.33
-0.38
-1.96
SI
61.0
55.0
57.0
3.06
0.709
57.67
1.13
-0.46
SK
10.0
9.0
10.0
0.58
0.118
9.67
-15.50
-17.09
X
SM
50.0
48.0
50.0
1.15
0.236
49.33
-1.76
-3.35
u
SN
440:0
441.0
454.0
7.81
2.246
445.00
135.30
133-71
X
• a
0 a
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U s Below control limit
-------
S- ============.
33/52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
^
(
Cesium-134
-N
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SR
54.0
51.0
53.0
1.53
0.354
52.67
-0.61
-2.19
ss
48.0
53.0
54.0
3.21
0.709
51.67
-0.95
-2.54
ST
52.0
52.0
52.0
0.00
0.000
52.00
-0.84
-2.42
su
•
sv
51.0
54.0
54.0
1.73
0.354
53.00
-0.49
-2.08
sw
56.0
55.0
56.0
0.58
0.118
55.67
0.43
-1.15
sz
55.0
56.0
54.0
1.00
0.236
55.00
0.20
-1.39
T
54.0
54.0
52.0
1.15
0.236
53.33
-0.38
-1.96
TA
59.0
55.0
53.0
3.06
0.709
55.67
0.43
-1.15
TB
58.0
66.0
66.0
4.62
0.945
63.33
3.09
1.50
TC
141.0
118.0
124.0
11.93
4.271
127.67
25.37
23.79
X
TD
27.0
30.0
28.0
1.53
0.354
28.33
-9.04
-10.62
X
TE
~-
TG
51.0
53.0
54.0
1.53
0.354
52.67
-0.61
-2.19
TH
49.0
48.0
49.0
0.58
0.118
48.67
-1.99
-3.58
TT
52.0
50.0
50.0
1.15
0.236
50.67
-1.30
-2.89
TK
48.0
52.0
57.0
4.51
1.120
52.33
-0.72
-2.31
TL
50.0
47.0
46.0
2.08
0.473
47.67
-2.34
-3.93
H
TO
62.0
66.0
62.0
2.31
0.473
63.33
3.09
1.50
TQ
52.0
50.0
47.0
2.52
0.591
49.67
-1.65
-3.23
TR
54.0
51.0
51.0
1.73
0.354
52.00
-0.84
-2.42
TS
40.0
41.0
39.0
1.00
0.236
40.00
-4.99
-6.58
TT
• -
TU
51.0
52.0
52.0
0.58
0.118
51.67
-0.95
-2.54
TV
*
TW
•
U
51.0
56.0
56.0
2.89
0.591
54.33
-0.03
-1.62
UB
•
UC
•
UE
54.0
55.0
59.0
2.65
0.591
56.00
0.55
-1.04
ui
38.0
38.0
38.0
0.00
0.000
38.00
-5.69
-7.27
X
UK
UM
54.0
56.0
54.0
1.15
0.236
54.67
0.09
-1.50
UN
53.0
52.0
51.0
1.00
0.236
52.00
-0.84
-2.42
UP
51.0
53.0
53.0
1.15
0.236
52.33
-0.72
-2.31
UB
•
UT
•
UV
53.0
54.0
58.0
2.65
0.591
55.00
0.20
-1.39
UW
57.0
60.0
57.0
1.73
0.354
58.00
1.24
-0.35
UX
54.0
56.0
52.0
2.00
0.473
54.00
-0.14
-1.73
UY
48.0
51.0
54.0
3.00
0.709
51.00
-1.18
-2.77
VA
•
VC
379.0
408.0
391.0
14.57
5.621
392.67
117.17
115.59
X
VE
464,0
460.0
468.0
400
0.945
464.00
14188
140.30
X
W
•
• =
No data submitted
TAG SYMBOLS
It = Above control limit
in
s
Insufficient data
x -
Octermined to be an outlier
U = Below control limit
-4/
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 34 / 52
Cesium-134
Lab Res. 1
Exper. Rng anal Normalized deviation
°es- ^ Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
WA
X
Y
Z
51.0
49.0
54.0
52.0
55.0
49.0
51.0
52.0
53.0
49.0
53.0
54.0
2.00
0.00
1.53
1.15
0.473
0.000
0.354
0.236
53.00
49.00
52.67
52.67
-0.49
-1.88
-0.61
-0.61
-2.08
-3.46
-2.19
-2.19
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.67
X
SK
50.33
AA
53.00
AU
17.33
X
QU
50.67
TI
53.33
T
26.67
X
FZ
50.67
SD
53.33
SF
28.33
X
TD
50.67
QZ
53.33
QT
28.33
X
AZ
51.00
UY
53.33
PB
34.00
X
CG
51.00
RL
53.33
MA
36.67
X
RX
51.00
FK
53.33
DO
38.00
X
UI
51.33
FE
53.33
CS
40.00
U
TS
51.33
CA
53.33
CJ
42.33
U
CM
51.67
TU
53.67
MQ
43.00
U
PM
51.67
ss
53.67
L
44.33
li
NK
51.67
RO
54.00
UX
44.67
li
NI
51.67
K
54.00
R
45.33
n
AW
52.00
UN
54.00
NP
46.67
u
MY
52.00
TR
54.00
KH
47.00
u
HU
52.00
ST
54.00
JR
47.67
u
TL
52.00
QL
54.00
HK
48.33
u
QM
52.00
PV
54.00
BB
48.33
1L
JG
52.00
EH
54.00
AN
48.67
TH
52.00
CO
54.33
U
49.00
U
X
52.00
BC
54.33
RH
49.00
OL
52.33
UP
54.33
PW
49.00
a
BA
52.33
TK
54.33
KM
49.33
n
SM
52.33
PI
54.33
FJ
49.33
u
Q
52.33
NH
54.33
DE
49.33
u
NZ
52.33
J
54.67
UM
49.67
ji
TQ
52.33
CK
54.67
QP
49.67
u
RF
52.33
BO
54.67
JY
49.67
u
M
52.33
BH
54.67
FU
49.67
n
JE
52.67
Z
54.67
CP
50.00
n
RK
52.67
Y
55.00
UV
50.00
ii
QJ
52.67
TG
55.00
SZ
50.00
u
m
52.67
SR
55.00
RR
50.33
RV
52.67
sc
55.00
RC
50.33
PT
52.67
EA
55.00
OA
50.33
NJ
53.00
WA
55.00
MV
50.33
ML
53.00
sv
55.00
GE
50.33
LE
53.00
DG
55.00
DL
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
= Determined to be an outlier
ft a Above control limit
U a Below control limit
-------
35/52
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
55.00
BN
57.00
C
60.67
PQ
55.00
BM
57.33
JS
60.67
BK
55.00
BL
57.33
EL
61.00
OK
55.00
AF
57.67
SI
61.33
AY
55.00
A
57.67
PC
62.00
RA
55.33
E
58.00
UW
62.00
IC
55.33
AP
58.00
PE
62.33
OT
55.67
TA
58.00
IA
62.33
HP
55.67
SW
58.00
D
63.00
FL
55.67
OM
58.33
GI
63.33
TO
55.67
N
58.33
CX
63.33
TB
55.67
LF
58.67
EN
63.33
QX
55.67
I
58.67
DM
63.33
DH
55.67
AK
59.00
MS
63.33
AL
56.00
UE
59.00
MP
64.00
NB
56.00
O
59.00
DZ
65.00
BI
56.00
EB
59.33
RZ
68.67
ft
DJ
56.00
DR
59.33
QB
72.00
X
LR
56.00
DD
59.33
IU
76.33
X
KX
56.00
AE
59.33
EX
99.67
X
BW
56.33
S
60.00
LT
127.67
X
TC
56.33
PX
60.00
HJ
169.67
X
PP
56.33
HE
60.00
AJ
392.67
X
VC
56.67
KL
60.33
DT
445.00
X
SN
56.67
HL
60.33
CQ
453.00
X
MT
56.67
CE
60.67
RM
464.00
479.00
X
X
VE
EZ
responding labs
Frequency distribution
10-F
T
~3T
-6
-4 -2 0 +2
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
lOf
J|U|
I.
Mil
¦,hnf—|
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• 3 No data submitted TAG SYMBOLS IT = Above control limit
0 = Insufficient data x - Determined to be an outlier II = Below control limit
VV : '
-------
>N
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 36 / 52
Cesium-137 Statistical Summary 229 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 5.0; the control limits
are 31.3 to 48.7; the warning regions are 31.3 to 34.2 and 45.8 to 48.7
Statistic Respondents Non-outliers
Mean
49.26
Grand Avg 42.14
Std. Dev.
46.27
3.04
Variance
2140.47
9.23
% Coef. of Var.
93.92
7.21
% deviation of mean from known value
23.15
5.34
Norm. dev. of mean from known value
0.20
0.70
Median
42.00
42.00
% deviation of median from known value
5.00
5.00
Norm. dev. of median from known value
0.04
0.66
-------
fr
37/52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
(
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
40.0
42.0
47.0
3.61
0.827
43.00
0.30
1.04
AA
40.0
39.0
40.0
0.58
0.118
39.67
-0.86
-0.12
AE
43.0
42.0
42.0
0.58
0.118
42.33
0.07
0.81
AF
44.0
39.0
39.0
2.89
0.591
40.67
-0.51
0.23
AI
e
AJ
48.0
49.0
47.0
1.00
0.236
48.00
2.03
2.77
AK
40.0
43.0
44.0
2.08
0.473
42.33
0.07
0.81
AL
47.0
47.0
43.0
2.31
0.473
45.67
1.22
1.96
AN
42.0
46.0
46.0
2.31
0.473
44.67
0.88
1.62
AP
39.0
41.0
40.0
1.00
0.236
40.00
-0.74
0.00
AU
39.0
38.0
41.0
1.53
0.354
39.33
-0.97
-0.23
AW
44.0
42.0
44.0
1.15
0.236
43.33
0.41
1.15
AY
40.0
41.0
40.0
0.58
0.118
40.33
-0.63
0.12
AZ
18.0
17.0
17.0
0.58
0.118
17.33
-8:59
-7;86
X
BA
31.0
33.0
35.0
2.00
0.473
33.00
-3.17
-2.42
BB
40.0
40.0
41.0
0.58
0.118
40.33
-0.63
0.12
BC
39.0
39.0
40.0
0.58
0.118
39.33
-0.97
-0.23
BG
' •
BH
45.0
42.0
46.0
2.08
0.473
44.33
0.76
1.50
BI
39.0
40.0
39.0
0.58
0.118
39.33
-0.97
-0.23
BK
44.0
42.0
46.0
2.00
0.473
44.00
0.65
1.39
BL
40.0
42.0
41.0
1.00
0.236
41.00
-0.39
0.35
BM
44.0
42.0
43.0
1.00
0.236
43.00
0.30
1.04
BN
48.0
49.0
49.0
0.58
0.118
48.67
2.26
3.00
BO
41.0
45.0
40.0
2.65
0.591
42.00
-0.05
0.69
BW
82.0
76.0
81.0
3.21
0.709
79.67
13.00
13,74
X
C
42.0
41.0
40.0
1.00
0.236
41.00
-0.39
0.35
CA
41.0
41.0
43.0
1.15
0.236
41.67
-0.16
0.58
CC
CE
44.0
44.0
45.0
0.58
0.118
44.33
0.76
1.50
CG
49.0
49.0
49.0
0.00
0.000
49.00
2.38
3.12
tr
CJ
44.0
42.0
38.0
3.06
0.709
41.33
-0.28
0.46
CK
41.0
41.0
39.0
1.15
0.236
40.33
-0.63
0.12
CM
49.0
46.0
47.0
1.53
0.354
47.33
1.80
2.54
CO
43.0
42.0
49.0
3.79
0.827
44.67
0.88
1.62
CP
41.0
42.0
41.0
0.58
0.118
41.33
-0.28
0.46
CQ
44.0
42.0
43.0
1.00
0.236
43.00
0.30
1.04
CS
43.0
41.0
43.0
1.15
0.236
42.33
0.07
0.81
CX
47.0
44.0
45.0
1.53
0.354
45.33
1.11
1.85
D
44.0
45.0
46.0
1.00
0.236
45.00
0.99
1.73
DD
43.0
43.0
43.0
0.00
0.000
43.00
0.30
1.04
DE
45.0
45.0
45.0
0.00
0.000
45.00
0.99
1.73
DG
39.0
41.0
40.0
1.00
0.236
40.00
-0.74
0.00
DH
43.0
43.0
43.0
0.00
0.000
43.00
0.30
1.04
DJ
48.0
43.0
52.0
4.51
1.120
47.67
1.92
2.66
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
1 0 a
Insufficient data
x =
TVtermined to be an outlier
II ~ Below control limit
^ : V
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 38 / 52
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
39.0
41.0
42.0
1.53
0.354
40.67
-0.51
0.23
DM
40.0
41.0
42.0
1.00
0.236
41.00
-0.39
0.35
DO
45.0
47.0
38.0
4.73
1.120
43.33
0.41
1.15
DR
44.0
46.0
43.0
1.53
0.354
44.33
0.76
1.50
DT
45.0
41.0
38.0
3.51
0.827
41.33
-0.28
0.46
DY
•
DZ
52.0
52.0
50.0
1.15
0.236
51.33
3.19
3.93 IT
E
43.0
43.0
43.0
0.00
0.000
43.00
0.30
1.04
EA
44.0
42.0
41.0
1.53
0.354
42.33
0.07
0.81
EB
45.0
46.0
46.0
0.58
0.118
45.67
1.22
1.96
EH
41.0
42.0
39.0
1.53
0.354
40.67
-0.51
0.23
EL
42.0
42.0
42.0
0.00
0.000
42.00
-0.05
0.69
EN
48;0
0
EW
•
EX
37.0
45.0
43.0
4.16
0.945
41.67
-0.16
0.58
EZ
356.0
347.0
341.0
7.55
2.470
348.00
105.95
106.69 x
FE
42.0
39.0
41.0
1.53
0.354
40.67
-0.51
0.23
FJ
41.0
43.0
38.0
2.52
0.591
40.67
-0.51
0.23
FK
38.0
38.0
38.0
0.00
0.000
38.00
-1.43
-0.69
FL
49.0
46.0
47.0
1.53
0.354
47.33
1.80
2.54
FU
42.0
43.0
45.0
1.53
0.354
43.33
0.41
1.15
FZ
22.0
21.0
20.0
1.00
0.236
21.00
-7.32
-6.58 x
GE
39.0
41.0
42.0
1.53
0.354
40.67
-0.51
0.23
GI
46.0
46.0
45.0
0.58
0.118
45.67
1.22
1.96
GL
•
GO
26.0
26.0
28.0
1.16
0:236
26.6T
-5,36
4.62 x
GQ
•>
HE
39.0
40.0
39.0
0.58
0.118
39.33
-0.97
-0.23
HI
37.0
37.0
42.0
2.89
0.591
38.67
-1.20
-0.46
HJ
45.0
42.0
45.0
1.73
0.354
44.00
0.65
1.39
HK
41.0
40.0
42.0
1.00
0.236
41.00
-0.39
0.35
HL
46.0
46.0
46.0
0.00
0.000
46.00
1.34
2.08
HP
50.0
50.0
50.0
0.00
0.000
50.00
2.72
3.46 It
HU
37.0
36.0
36.0
0.58
0.118
36.33
-2.01
-1.27
HX
•
I
40.0
43.0
38.0
2.52
0.591
40.33
-0.63
0.12
IA
45.0
47.0
42.0
2.52
0.591
44.67
0.88
1.62
IC
n
44.0
46.0
44.0
1.15
0.236
44.67
0.88
1.62
IU
43.0
43.0
43.0
0.00
0.000
43.00
0.30
•
1.04
J
42.0
41.0
40.0
1.00
0.236
41.00
-0.39
0.35
JE
40.0
38.0
41.0
1.53
0.354
39.67
-0.86
-0.12
JG
38.0
41.0
38.0
1.73
0.354
39.00
-1.09
-0.35
JI
. •
JH
44.0
45.0
45.0
0.58
0.118
44.67
0.88
1.62
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
s Below control limit
-------
39 / 52 EMSL-LV Performance Evaluation: Gamma in Water,
12-Nov-1993
^
Cesium-137
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
45.0
48.0
44.0
2.08
0.473
45.67
1.22
1.96
JY
42.0
48.0
50.0
4.16
0.945
46.67
1.57
2.31
K
47.0
47.0
49.0
1.15
0.236
47.67
1.92
2.66
KF
•
KH
42.0
45.0
43.0
1.53
0.354
43.33
0.41
1.15
KL
43.0
41.0
45.0
2.00
0.473
43.00
0.30
1.04
KM
38.0
40.0
39.0
1.00
0.236
39.00
-1.09
-0.35
KX
56.0
56.0
58.0
1.15
0.236
56.67
5.03
5.77
X
L
38.0
41.0
39.0
1.53
0.354
39.33
-0.97
-0.23
LA
•'
LE
42.0
41.0
44.0
1.53
0.354
42.33
0.07
0.81
LF
43.0
44.0
43.0
0.58
0.118
43.33
0.41
1.15
LM
•
LR
41.0
43.0
42.0
1.00
0.236
42.00
-0.05
0.69
LT
44.0
44.0
44.0
0.00
0.000
44.00
0.65
1.39
M
39.0
40.0
40.0
0.58
0.118
39.67
-0.86
-0.12
MA
43.0
43.0
43.0
0.00
0.000
43.00
0.30
1.04
ML
40.0
40.0
40.0
0.00
0.000
40.00
-0.74
0.00
MN
•
MP
44.0
43.0
41.0
1.53
0.354
42.67
0.18
0.92
MQ
41.0
39.0
36.0
2.52
0.591
38.67
-1.20
-0.46
MS
43.0
43.0
44.0
0.58
0.118
43.33
0.41
1.15
MT
365.0
344.0
349.0
5.51
1.570
349.33
106.42
107.16
X
MV
41.0
43.0
43.0
1.15
0.236
42.33
0.07
0.81
MY
32.0
33.0
32.0
0.58
0.118
32.33
-3.40
-2.66
N
46.0
43.0
44.0
1.53
0.354
44.33
0.76
1.50
NB
42.0
45.0
43.0
1.53
0.354
43.33
0.41
1.15
NH
44.0
44.0
43.0
0.58
0.118
43.67
0.53
1.27
NI
40.0
39.0
36.0
2.08
0.473
38.33
-1.32
-0.58
NJ
50.0
50.0
48.0
1.15
0.236
49.33
2.49
3.23
IT
NK
40.0
36.0
30.0
5.03
1.345
35.33
-2.36
-1.62
NP
40.0
41.0
40.0
0.58
0.118
40.33
-0.63
0.12
NZ
42.0
36.0
31.0
5.51
1.570
36.33
-2.01
-1.27
O
43.0
43.0
43.0
0.00
0.000
43.00
0.30
1.04
OA
39.0
41.0
41.0
1.15
0.236
40.33
-0.63
0.12
OB
37.0
39.0
37.0
1.15
0.236
37.67
-1.55
-0.81
OK
26.0
27.0
23.0
2.08
0.473
25.33
-5.82
-5.08
X
OL
46.0
46.0
46.0
0.00
0.000
46.00
1.34
2.08
OM
40.0
41.0
38.0
1.53
0.354
39.67
-0.86
-0.12
OT
39.0
45.0
46.0
3.79
0.827
43.33
0.41
1.15
OZ
•
PB
42.0
39.0
42.0
1.73
0.354
41.00
-0.39
0.35
PC
42.0
44.0
45.0
1.53
0.354
43.67
0.53
1.27
PD
•
PE
49.0
38.0
47.0
5.86
1.570
44.67
0.88
1.62
• 3
No data submitted
TAG SYMBOLS
It s Above control limit
-------
EMSL-LV Performance
Evaluation: Gamma
in Water,
^
12-Nov-1993 40 / 52
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PI
44.0
41.0
43.0
1.53
0.354
42.67
0.18
0.92
PM
35.0
40.0
40.0
2.89
0.591
38.33
-1.32
-0.58
PP
116.0
125.0
122.0
4.58
1.120
121.00
27.32
28.06
X
PQ
46.0
46.0
46.0
0.00
0.000
46.00
1.34
2.08
PT
44.0
41.0
43.0
1.53
0.354
42.67
0.18
0.92
PU
•
PV
41.0
41.0
42.0
0.58
0.118
41.33
-0.28
0.46
PW
42.0
42.0
41.0
0.58
0.118
41.67
-0.16
0.58
PX
39.0
40.0
39.0
0.58
0.118
39.33
-0.97
-0.23
PY
•
Q
40.0
42.0
40.0
1.15
0.236
40.67
-0.51
0.23
QB
45.0
48.0
45.0
1.73
0.354
46.00
1.34
2.08
QJ
43.0
43.0
40.0
1.73
0.354
42.00
-0.05
0.69
QK
•
QL
43.0
45.0
43.0
1.15
0.236
43.67
0.53
1.27
QM
47.0
44.0
44.0
1.73
0.354
45.00
0.99
1.73
QP
45.0
41.0
38.0
3.51
0.827
41.33
-0.28
0.46
Q<*
•
QT
43.0
44.0
37.0
3.79
0.827
41.33
-0.28
0.46
QU
12.0
13.0
11.0
1.00
0.230
12.00
-10.44
-9.70
X
QX
51.0
49.0
48.0
1.53
0.354
49.33
2.49
3.23
It
QZ
38.0
39.0
40.0
1.00
0.236
39.00
-1.09
-0.35
R
43.0
43.0
42.0
0.58
0.118
42.67
0.18
0.92
RA
45.0
45.0
44.0
0.58
0.118
44.67
0.88
1.62
RC
43.0
43.0
43.0
0.00
0.000
43.00
0.30
1.04
RF
41.0
39.0
39.0
1.15
0.236
39.67
-0.86
-0.12
RH
41.0
41.0
40.0
0.58
0.118
40.67
-0.51
0.23
RK
41.0
38.0
39.0
1.53
0.354
39.33
-0.97
-0.23
RL
12.0
12.0
12.0
0.00
0.000
12.00
-10:44
-9.70
¦'it-
RM
35.0
36.0
35.0
0.58
0.118
35.33
-2.36
-1.62
RO
42.0
37.0
43.0
3.21
0.709
40.67
-0.51
0.23
RQ
RR
39.0
40.0
42.0
1.53
0.354
40.33
-0.63
0.12
RV
39.0
39.0
36.0
1.73
0.354
38.00
-1.43
-0.69
RX
49.0
45.0
51.0
3.06
0.709
48.33
2.15
2.89
RZ
40.0
42.0
41.0
1.00
0.236
41.00
-0.39
0.35
S
39.0
40.0
39.0
0.58
0.118
39.33
-0.97
-0.23
SA
sc
44.0
42.0
42.0
1.15
0.236
42.67
0.18
0.92
SD
39.0
40.0
39.0
0.58
0.118
39.33
-0.97
-0.23
SF
43.0
44.0
38.0
3.21
0.709
41.67
-0.16
0.58
SI
48.0
39.0
41.0
4.73
1.120
42.67
0.18
0.92
SK
8,0
7.0
9.0
1.00
0.236
8.00
-11.83
-11.09
X
SM
41.0
41.0
39.0
1.15
0.236
40.33
-0.63
0.12
SN
368;0
270.0
301.0
42.03
17.547
311.07
93i37
94.11
X
• 5
0 3
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT 3 Above control limit
li 3 Below control limit
-------
41 / 52
V
EMSL-LV Performance Evaluation: Gamma in Water,
12-Nov-1993
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
SR
38.0
42.0
36.0
3.06
0.709
38.67
-1.20
-0.46
ss
41.0
41.0
40.0
0.58
0.118
40.67
-0.51
0.23
ST
42.0
41.0
42.0
0.58
0.118
41.67
-0.16
0.58
su
•
sv
50.0
39.0
42.0
5.69
1.570
43.67
0.53
1.27
sw
46.0
45.0
44.0
1.00
0.236
45.00
0.99
1.73
sz
43.0
43.0
44.0
0.58
0.118
43.33
0.41
1.15
T
38.0
42.0
39.0
2.08
0.473
39.67
-0.86
-0.12
TA
44.0
45.0
40.0
2.65
0.591
43.00
0.30
1.04
TB
45.0
41.0
49.0
4.00
0.945
45.00
0.99
1.73
TC
100.0
124.0
129.0
15.50
5.621
117.67
26.16
26.90
X
TD
21.0
19.0
23.0
2.00
0.473
21.00
-7.32
-6.58
X
TE
*
TG
44.0
42.0
41.0
1.53
0.354
42.33
0.07
0.81
TH
37.0
36.0
36.0
0.58
0.118
36.33
-2.01
-1.27
TI
43.0
41.0
41.0
1.15
0.236
41.67
-0.16
0.58
TK
39.0
41.0
46.0
3.61
0.827
42.00
-0.05
0.69
TL
35.0
29.0
25.0
5.03
1.345
29.67
-4.32
-3.58:
X
TO
42.0
45.0
42.0
1.73
0.354
43.00
0.30
1.04
TQ
39.0
39.0
41.0
1.15
0.236
39.67
-0.86
-0.12
TR
39.0
42.0
41.0
1.53
0.354
40.67
-0.51
0.23
TS
31.0
31.0
30.0
0.58
0.118
30.67
-3.97
-3.23
X
TT
• .
TU
40.0
42.0
40.0
1.15
0.236
40.67
-0.51
0.23
TV
•
TW
•
U
40.0
38.0
43.0
2.52
0.591
40.33
-0.63
0.12
UB
•
UC
UE
45.0
46.0
47.0
1.00
0.236
46.00
1.34
2.08
UI
22.0
23.0
2L0
1.00
0.236
22;00
-6.98
-6,24
X
UK
ft.
UM
41.0
40.0
40.0
0.58
0.118
40.33
-0.63
0.12
UN
41.0
43.0
42.0
1.00
0.236
42.00
-0.05
0.69
UP
43.0
44.0
44.0
0.58
0.118
43.67
0.53
1.27
UR
•
UT
•
UV
37.0
39.0
38.0
1.00
0.236
38.00
-1.43
-0.69
UW
44.0
46.0
41.0
2.52
0.591
43.67
0.53
1.27
UX
43.0
42.0
44.0
1.00
0.236
43.00
0.30
1.04
UY
43.0
42.0
41.0
1.00
0.236
42.00
-0.05
0.69
VA
•
VC
277.0
299.0
283.0
11.37
4.046
286.33
84.59
85.33
X
VE
338.0
302.0
345.0
23.07
8.771
328.33
99:14
99;88
X
W
•
• =
0 =
No data submitted
Insufficient data
x -
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
= Below control limit
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 42 / 52
' ""
Cesium-137
Exper. Rng anal Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known)
WA
40.0
43.0
41.0
1.53
0.354
41.33
-0.28
0.46
X
39.0
38.0
37.0
1.00
0.236
38.00
-1.43
-0.69
Y
42.0
39.0
42.0
1.73
0.354
41.00
-0.39
0.35
Z
42.0
41.0
41.0
0.58
0.118
41.33
-0.28
0.46
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.00
X
SK
39.33
BC
41.00
HK
12.00
X
RL
39.33
AU
41.00
DM
12.00
X
QU
39.67
TQ
41.00
C
17.33
X
AZ
39.67
T
41.00
BL
21.00
X
TD
39.67
RF
41.33
Z
21.00
X
FZ
39.67
OM
41.33
WA
22.00
X
UI
39.67
M
41.33
QT
25.33
X
OK
39.67
JE
41.33
QP
26.67
X
GO
39.67
AA
41.33
PV
29.67
X
TL
40.00
ML
41.33
DT
30.67
X
TS
40.00
DG
41.33
CP
32.33
MY
40.00
AP
41.33
CJ
33.00
BA
40.33
UM
41.67
TI
35.33
RM
40.33
U
41.67
ST
35.33
NK
40.33
SM
41.67
SF
36.33
TH
40.33
RR
41.67
PW
36.33
NZ
40.33
OA
41.67
EX
36.33
HU
40.33
NP
41.67
CA
37.67
OB
40.33
I
42.00
UY
38.00
X
40.33
CK
42.00
UN
38.00
uv
40.33
BB
42.00
TK
38.00
RV
40.33
AY
42.00
QJ
38.00
FK
40.67
TU
42.00
LR
38.33
PM
40.67
TR
42.00
EL
38.33
NI
40.67
SS
42.00
BO
38.67
SR
40.67
RO
42.33
TG
38.67
MQ
40.67
RH
42.33
MV
38.67
m
40.67
Q
42.33
LE
39.00
QZ
40.67
GE
42.33
EA
39.00
KM
40.67
FJ
42.33
CS
39.00
JG
40.67
FE
42.33
AK
39.33
SD
40.67
EH
42.33
AE
39.33
S
40.67
DL
42.67
SI
39.33
RK
40.67
AF
42.67
SC
39.33
PX
41.00
Y
42.67
R
39.33
L
41.00
RZ
42.67
PT
39.33
HE
41.00
PB
42.67
PI
39.33
BI
41.00
J
42.67
MP
• a No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft
= Above control limit
= Below control limit
-------
43/52
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
43.00
UX
43.67
QL
46.00
UE
43.00
TO
43.67
PC
46.00
QB
43.00
TA
43.67
NH
46.00
PQ
43.00
RC
44.00
LT
46.00
OL
43.00
O
44.00
HJ
46.00
HL
43.00
MA
44.00
BK
46.67
JY
43.00
KL
44.33
N
47.33
FL
43.00
IU
44.33
DR
47.33
CM
43.00
E
44.33
CE
47.67
K
43.00
DH
44.33
BH
47.67
DJ
43.00
DD
44.67
RA
48.00
AJ
43.00
CQ
44.67
PE
48.33
RX
43.00
BM
44.67
JR
48.67
BN
43.00
A
44.67
IC
49.00
ir
CG
43.33
SZ
44.67
LA
49.33
ir
QX
43.33
OT
44.67
CO
49.33
it
NJ
43.33
NB
44.67
AN
50.00
ft
HP
43.33
MS
45.00
TB
51.33
ft
DZ
43.33
LF
45.00
SW
56.67
X
KX
43.33
KH
45.00
QM
79.67
X
BW
43.33
FU
45.00
DE
117.67
X
TC
43.33
DO
45.00
D
121.00
X
PP
43.33
AW
45.33
CX
286.33
X
VC
43.67
UW
45.67
JS
311.67
X
SN
43.67
UP
45.67
GI
328.33
X
VE
43.67
SV
45.67
EB
348.00
X
EZ
45.67
AL
349.33
X
MT
responding labs
Frequency distribution
10-
jl
¦¦tJlhllUf i..T.
"Y
T
T
-2
+2 +4
Normalized deviation of the mean from the known value
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x - Determined to be an outlier
1t = Above control limit
= Below control limit
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 44 / 52
Cesium-137
% responding labs Frequency distribution
10-
¦ f -¦¦Mlilrfiilf-f
-4 -2 6' +'2 +4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 45 / 52
Barium-133 Statistical Summary 229 Participants
The known value of this nuclide is 79.0 pCi/1 with an expected precision of 8.0; the control limits
are 65.1 to 92.9; the warning regions are 65.1 to 69.7 and 88.3 to 92.9
Statistic Respondents Non-outliers
Mean
91.23
Grand Avg 76.45
Std. Dev.
88.87
6.31
Variance
7897.37
39.86
% Coef. of Var.
97.41
8.26
% deviation of mean from known value
15.48
-3.23
Norm. dev. of mean from known value
0.14
-0.40
Median
77.33
77.17
% deviation of median from known value
-2.11
-2.32
Norm. dev. of median from known value
-0.02
-0.29
-------
46/52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Barium-133
Lab
Res. 1
Res. 2
Exper.
Rng anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
. (grand-avg)
(known) Tag
A
84.0
82.0
84.0
1.15
0.148
83.33
1.49
0.94
AA
74.0
71.0
72.0
1.53
0.222
72.33
-0.89
-1.44
AE
70.0
69.0
70.0
0.58
0.074
69.67
-1.47
-2.02
AF
73.0
78.0
79.0
3.21
0.443
76.67
0.05
-0.51
AI
• -
AJ
86.0
87.0
87.0
0.58
0.074
86.67
2.21
1.66
AK
81.0
81.0
80.0
0.58
0.074
80.67
0.91
0.36
AL
80.0
75.0
79.0
2.65
0.369
78.00
0.34
-0.22
AN
82.0
78.0
83.0
2.65
0.369
81.00
0.99
0.43
AP
67.0
70.0
71.0
2.08
0..295
69.33
-1.54
-2.09
AU
73.0
79.0
73.0
3.46
0.443
75.00
-0.31
-0.87
AW
80.0
80.0
83.0
1.73
0.222
31.00
0.99
0.43
AY
79.0
79.0
77.0
1.15
0,148
78.33
0.41
-0.14
AZ
35.0
33.0
38.0
2.52
0.369
35.33
-8.90
-9.45 x
BA
69.0
65.0
65.0
2.31
0.295
C6.33
•2.19
-2.74
BB
79.0
79.0
81.0
1.15
0.148
79.67
0.70
0.14
BC
68.0
71.0
69.0
1.53
0.222
69.33
-1.54
-2.09
BG
• .
BH
76.0
74.0
77.0
1.53
0.222
75.67
-0.17
•0.72
BI
97.0
69.0
83.0
14 00
3 033
83.00
1.42
0.87
BK
77.0
79.0
77.0
1.15
0.148
77.67
0.26
-0.29
BL
77.0
75.0
79.0
2.00
0.295
77.00
0.12
-0.43
BM
87.0
87.0
86.0
0.58
0.074
86.67
2.21
1.66
BN
73.0
78.0
74.0
265
0.369
75.00
•0.31
-0.87
BO
68.0
69.0
73.0
2.65
0.369
70.00
-1.40
-1.95
BW
C
85.0
83.0
84.0
1.00
0.148
84.00
1.64
1.08
CA
74.0
69.0
84.0
7.64
1.205
75.67
-0.17
-0.72
CC
CE
80.0
83.0
84.0
2.08
0.295
32.33
1.27
0.72
CG
e
CJ
72.0
70.0
66.0
3.06
0.443
69.33
•1.54
-2.09
CK
68.0
68.0
68.0
0.00
0.000
68.00
-1.83
-2.38
CM
79.0
73.0
72.0
3.79
0.517
74.67
-0.39
-0.94
CO
77.0
78.0
75.0
1.53
0.222
76.67
0.05
-0.51
CP
80.0
79.0
32.0
1.53
0.222
80.33
0.84
0.29
CQ
90.0
86.0
83.0
3.51
0.517
86.33
2.14
1.59
cs
70.0
71.0
70.0
0.58
0.074
70.33
-1.32
-1.88
cx
78.0
82.0
78.0
2.31
0.295
79.33
0.63
0.07
D
80.0
82.0
83.0
1.53
0.222
81.67
1.13
0.58
DD
80.0
79.0
78.0
1.00
0.148
79.00
0.55
0.00
DE
74.0
75.0
75.0
0.58
0.074
74.67
-0.39
-0.94
DG
72.0
71.0
74.0
1.53
0.222
72.33
-0.89
-1.44
DH
81.0
82.0
81.0
0.58
0.074
81.33
1.06
0.51
DJ
61.0
56.0
66.0
5.00
0.738
61.00
-3.34
-3.90 U
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
0 =
Insufficient data
x ~
I Vtermined to be an outlier
U = Below control limit
-------
(r
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
•—
47/52
Barium-133
-v
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DL
80.0
81.0
82.0
1.00
0.148
81.00
0.99
0.43
DM
82.0
83.0
80.0
1.53
0.222
81.67
1.13
0.58
DO
87.0
84.0
71.0
8.50
1.345
80.67
0.91
0.36
DR
•
DT
79.0
75.0
84.0
4.51
0.665
79.33
0.63
0.07
DY
•
DZ
103 ;0
103.0
106.0
1.73
0.222
104.00
5.97
5.41
X
E
76.0
77.0
77.0
0.58
0.074
76.67
0.05
-0.51
EA
79.0
79.0
80.0
0.58
0.074
79.33
0.63
0.07
EB
85.0
85.0
85.0
0.00
0.000
85.00
1.85
1.30
EH
83.0
71.0
76.0
6.03
0.886
76.67
0.05
-0.51
EL
81.0
81.0
78.0
1.73
0.222
80.00
0.77
0.22
EN
84.0
81.0
82.0
1.53
0.222
82.33
1.27
0.72
EW
•
EX
81.0
80.0
82.0
1.00
0.148
81.00
0.99
0.43
EZ
610.0
616.0
610.0
3.46
0.443
612.00
116.95;
115*40
X
FE
77.0
78.0
76.0
1.00
0.148
77.00
0.12
-0.43
FJ
72.0
74.0
78.0
3.06
0.443
74.67
-0.39
-0.94
FK
72.0
72.0
72.0
0.00
0.000
72.00
-0.96
-1.52
FL
91.0
89.0
91.0
1.15
0.148
90.33
3.01
2.45
FU
76.0
77.0
78.0
1.00
0.148
77.00
0.12
-0.43
FZ
•
GE
80.0
81.0
82.0
1.00
0.148
81.00
0.99
0.43
GI
85.0
82.0
78.0
3.51
0.517
81.67
1.13
0.58
6L
•
GO
•
GQ
•
HE
79.0
79.0
80.0
0.58
0.074
79.33
0.63
0.07
m
74.0
70.0
76.0
3.06
0.443
73.33
-0.67
-1.23
HJ
84.0
79.0
81.0
2.52
0.369
81.33
1.06
0.51
HK
76.0
77.0
73.0
2.08
0.295
75.33
-0.24
-0.79
HL
80.0
79.0
81.0
1.00
0.148
80.00
0.77
0.22
HP
86.0
100.0
101.0
8.39
1.205
95.67
4.16
3.61
It
HU
64.0
63.0
62.0
1.00
0.148
63.00
-2.91
-3.46
HX
•
I
75.0
77.0
76.0
1.00
0.148
76.00
-0.10
-0.65
IA
85.0
81.0
82.0
2.08
0.295
82.67
1.35
0.79
IC
n
IU
87.0
78.0
75.0
6.24
0.886
80.00
0.77
0.22
81.0
79.0
84.0
2.52
0.369
81.33
1.06
0.51
•
J
81.0
79.0
80.0
1.00
0.148
80.00
0.77
0.22
JE
72.0
71.0
71.0
0.58
0.074
71.33
-1.11
-1.66
JG
77.0
79.0
77.0
1.15
0.148
77.67
0.26
-0.29
JI
•
JR
67.0
72.0
71.0
2.65
0.369
70.00
-1.40
-1.95
• a
No data submitted
TAG SYMBOLS
IT a Above control limit
L0 =
Insufficient data
X 3
Determined to be an outlier
U 3 Below control limit
n
-------
=^\
48/52
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Barium-133
Lab
Res. 1
Res. 2
Exper.
Rug anal
Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JS
72.0
80.0
82.0
5.29
0.738
78.00
0.34
-0.22
JY
79.0
74.0
73.0
3.21
0.443
75.33
-0.24
-0.79
K
81.0
81.0
81.0
0.00
0.000
81.00
0.99
0.43
KF
•
KH
76.0
70.0
76.0
3.46
0.443
74.00
-0.53
-1.08
KL
79.0
80.0
79.0
0.58
0.074
79.33
0.63
0.07
KM
70.0
72.0
73.0
1.53
0.222
71.67
-1.03
-1.59
KX
42.0
41.0
42.0
0.58
0.074
41.67
-7.53
-8.08
X
L
73.0
73.0
76.0
1.73
0.222
74.00
-0.53
-1.08
LA
*
LE
81.0
65.0
86.0
10.97
2.049
77.33
0.19
-0.36
LF
83.0
80.0
77.0
3.00
0.443
80.00
0.77
0.22
LM
•
LR
84.0
50.0
85.0
19.92
4.017
73.00
-0.75
-1.30
LT
80.0
30.0
80.0
0.00
0.000
50.00
0.77
0.22
M
65.0
67.0
64.0
1.53
0.222
65.33
-2.41
-2.96
MA
78.0
78.0
77.0
0.58
0.074
77.67
0.26
-0.29
ML
75.0
71.0
76.0
2.65
0.369
74.00
-0.53
-1.08
MN
.ft
MP
72.0
79.9
75.0
3.51
0.517
75.33
-0.24
-0.79
MQ
74.0
75.0
77.0
i.53
0.222
75.33
-0.24
-0.79
MS
78.0
7G.0
78.0
1.15
0.148
77.33
0.19
-0.36
MT
673.0
3153.0
'358.0
13.80
2.752
663.33
127.06-
A2H;5r
X
MV
75.0
75.0
76.0
0.58
0.074
75.67
-0.17
-0.72
MY
64.0
65.0
66.0
1.00
0.148
bo.00
-2.48
-3.03
11
N
83.0
80.0
79.0
2.08
0.2^5
o0.67
0.9J.
0.36
NB
68.0
68.0
67.0
0.58
U.074
G7.67
-1.90
-2.45
NH
69.0
89.0
88.0
0.58
0.074
88.67
2.65
2.09
NT
72.0
62.0
62.0
5.77
0.738
0u.33
-2.41
-2.96
NJ
70.0
74.0
74.0
2.31
0.295
72.67
-0.82
-1.37
NK
77.0
51.0
57.0
13.61
2.752
61.67
-3.20
-3.75
JJ
NP
64.0
76.0
75.0
6.66
0.886
71.67
. -1.03
-1.59
NZ
58.0
62.0
64.0
4.00
0.591
&8.00
-3.99
-4.55
O
76.0
77.0
77.0
0.58
0.074
76.67
0.05
-0.51
OA
77.0
80.0
77.0
1.73
0.222
78.00
0.34
-0.22
OB
•
OK
75.0
75.0
78.0
1.73
0.222
76.00
-0.10
-0.65
OL
81.0
81.0
81.0
0.00
0.000
81.00
0.99
0.43
OM
78.0
80.0
81.0
1.53
0.222
79.67
0.70
0.14
OT
88.0
80.0
79.0
4.93
0.665
82.33
1.27
0.72
OZ
•
PB
78.0
83.0
85.0
3.61
0.517
82.00
1.20
0.65
PC
71.0
75.0
80.0
4.51
0.665
75.33
-0.24
-0.79
PD
ft.
PE
76.0
77.0
82.0
3.21
0.443
78.33
0.41
-0.14
• = No data submitted
TAG SYMBOLS
ft s Above control limit
0 s Insufficient data x - Determined to be an outlier 11 = Below control limit
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 49/52
r
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
—\
Normalized deviation
(grand-avg) (known) Tag
PI
75.0
72.0
73.0
1.53
0.222
73.33
-0.67
-1.23
PM
•
PP
233.0
243.0
263.0
15.28
3.314
246.33
36.78
36.23
X
PQ
80.0
79.0
81.0
1.00
0.148
80.00
0.77
0.22
PT
76.0
71.0
77.0
3.21
0.443
74.67
-0.39
-0.94
PU
. •
PV
77.0
72.0
76.0
2.65
0.369
75.00
-0.31
-0.87
PW
60.0
60.0
65.0
2>89
0.369
61.67
-3.20
-3.75
PX
80.0
81.0
80.0
0.58
0.074
80.33
0.84
0.29
PY
' •
Q
70.0
68.0
68.0
1.15
0.148
68.67
-1.68
-2.24
QB
81.0
87.0
85.0
3.06
0.443
84.33
1.71
1.15
QJ
79.0
78.0
76.0
1.53
0.222
77.67
0.26
-0.29
QK
•
QL
76.0
76.0
75.0
0.58
0.074
75.67
-0.17
-0.72
QM
71.0
72.0
67.0
2.65
0.369
70.00
-1.40
-1.95
QP
810
78.0
75.0
3.0 0
0.443
78.00
0.34
-0.22
QQ
- •
QT
81.0
80.0
81.0
0.58
0.074
80.67
0.91
0.36
QU
43;0
41.0
V r
42.0
1.00
0.148
42.00
-7.46
t8,01
X
QX
86.0
84.0
86.0
1.15
0.148
85.33
1.92
1.37
QZ
76.0
, t
76.0
76.0
0.00
0.000
76.00
-0.10
-0.65
R
77.0
75,0
76.0
1.00
0.148
76.00
-0.10
-0.65
RA
82.0
79^0
80.0
;.53
0.222
80.33
0.84
0.29
RC
62.0
63.0
64.0
.1.00
0.148
63.00
-2.91
-3.46
u
RF
79.0
76.0
82.0
3.00
0.443
79.00
0.55
0.00
RH
68.0
71.0
72.0
2.08
0.295
70.33
-1.32
-1.88
RK
69.0
67.0
,65.0
2.00
0.295
67.00
-2.05
-2.60
RL
139.0
139.0
i3»0
000
0,000
139;00
13.54
12;99
:-X'
RM
76.0
81.0
75.0
3.21
0.443
77.33
0.19
-0.36
RO
73.0
62.0
74.0
6~66
0.886
69.67
-1.47
-2.02
RQ
RR
78.0
79.0
79.0
0.58
0.074
78.67
0.48
-0.07
RV
78.0
73.0
72.0
3.21
0.44-3
74.33
-0.46
-1.01
RX
102.0
93.0
112.0
9.50
1.767
102.33
5.60
5^05
X
RZ
78.0
81.0
84.0
3.00
0.443
81.00
0.99
0.43
S
80.0
73.0
77.0
3.51
0.517
76.67
0.05
-0.51
SA
9 ¦
sc
73.0
71.0
71.0
1.15
0.148
71.67
-1.03
1.59
SD
65.0
65.0
65.0
0.00
0.000
65.00
¦2.48
-3.03
U
SF
73.0
70.0
72.0
1.53
0.222
71.67
-1.03
-1.59
SI
83.0
80.0
74.0
4.58
0.665
79.00
0.55
0.00
SK
15.0
14.0
15.0
0.58
0.074
14.67:
-13^38
-13;93
X
SM
74.0
73.0
74.0
0.58
0.074
73.67
-0.60
-1.15
SK
626;0
625.0
627.0
1.00
0.148
626.00
118;98
118.43:
X '
• =
I03
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
U = Below control limit
-------
f( " " " ' "• ~-==: ¦ .
i 50) 52 FMSWLV Performance EvaJufltian: Gamma in Water, 12-Nov-1993
/
Barium-133
Lab Res. I ,
Re3. 2
Res. 3
Exper.
Sigma.
Rtig anal
(F, + SR)
Am stage
Normalized deviation
fgrand-avg) (known) 1
/
T.
J
ag j
3R
75.0~
75.0
73.0
1.15
0.148
74.33
-0.46
-1.01
SS
77.0
80.0
78.0
1.53
01222
78.33
0.41
-0.14
ST
79.0
. 80.0
77.0
1.53
0.222
78.67
0.48
-0.07
su
•
sv
82.0 i
• 83.0
83.0
0.58
u.uVi
82.67
1.35
0.79
sw
84.0
85.0
87.0
1.53
<3.222
35.33
1.92
1.37
sz
84.0 ¦
83.0
85.0
1.00
0.145
84.011
1.64
1.08
T
81.0
78.0'
81.0
1.73
0.222
80.00
0.7?
0.22
TA
79.0
81.0
78.0
1.53
0.222
73.33
0.63
0.07
TB
92.0
88.0
90.0
2.00
0.29E
90.03
2.93
2.38
TC
78.0
118.0
125.3
25.36
5.706
107.00
6,62
8.06
X
TD
37,0
36.0
S5.
1.16
6. US
33. £7
¦8.8S
*9.38
X
TB
• -
TG
87.0
82.0
84.0
2.52
0.369
84.33
1.71
1.15
TH
65.0
66.0,
65 0
0.58
0.074
65.33
-2.41
-2.96
TT
74.0
68.3
68.0
3.46
0.443
70.0J
-1.40
-1.95
TK
70.0
76.0
8 4.0
7.02
1,064
76.67
0.05
-0.51
TL
75,0
79.0
84. C ¦
4.51
0.665
79.33
0.63
0.07
TO
69.0
69.0
68.0
0.58
0.074
6)5.67
-1.63
-2.24
TQ
69.0
72.0
67.0
2.52
0.369
69.33
-1.54
-2.0S
TP-
eao
65.0
68.0
1.73
0.222
67.00"
-2.05
-2.60
TP
52.0
' 53.0
54.0
1.00
0.148
5:r.C0
-5.08
-5.63
X .
IT
•
TIT
65.0
65.G
65.0
0.00
0.000
65.00
•2.48
-3.03
j .
TV
TO
U
69.0
72.0-
72,0
1.73
0.222
71.00
-1.18
-1.73
m
ue
*-
(JIT
85.0
87.0
80.0
3.61
0.517
84.00
164
1.08
UI
86.0
86.0
85.C.
0.58
0.074
85.6.
2.00
1.44
, UK
*" ¦
UM.
74.0
76-0
75.
-------
EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993 51/52
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
s
Normalized deviation
(grand-nvg) (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
J.00
0.148
68.00
-1.83
-2.38
Y
75.0
77.0
82.0
361
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 Average
Average
Tag
Lab1
Average
Tag
Lab
Average
Tag
Lab
14.67
T
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
I
NZ .
71.67
NP
76.67
TK
61.00
Ji
iw
71.67r
KM
76.67
S
61.67
u.
PW,
72.00
FK
76.67
o
61.67
i
NK
72.33
z
76.67 <
EH
63.00
c
RC
72.33'
DG
76.67'
E
63.00
HU .
72.33,
AA
- 76.67
CO
65.00
t
TU
72.67;
NJ
^ 76.67
AF
65.00
l:
SD
73.00;;
LR?
77.00
FU
65.00
MY
73.33v
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,i
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
uy
75.00
PV
78.00
JS
$9.33
TQ
75.00
BN
78.00
AL
§9.33
CJ
75.00
AU
78.33
WA
69.33,-
BC
, 75.33
PC
78.33"
SS
69.33
AP
I 75.33
MQ
78.33
PE
69.67
RO
75.33
MP
78.33
AY
69.67:
AE.-i
- 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
0 3 Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
1T 3 Above control limit
= Below control limit
-------
(r
52 / 52 EMSL-LV Performance Evaluation: Gamma in Water, 12-Nov-1993
Barium-133
% responding labs
Data sorted by Laboratory Average
Average
Tag
Lab
Average Te
g Lab
Average
Tag
Lab
79.00
DD
80.67
AK
84.00
C
79.33
TL
81.00
RZ
84.33
TG
79.33
TA
81.00
OL
84.33
QB
79.33
KL
81.00
K
85.00
EB
79.33
HE
81.00
GE
85.33
SW
79.33
EA
81.00
EX
85.33
QX
79.33
DT
81.00
DL
85.67
UI
79.33
CX
81.00
AW
86.33
CQ
79.67
OM
81.00
AN
86.67
BM
79.67
BB
81.33
IU
86.67
AJ
80.00
T
81.33
HJ
88.67
NH
80.00
PQ
81.33
DH
90.00
TB
80.00
LT
81.67
GI
90.33
FL
80.00
LF
81.67
DM
93.00
11
UP
80.00
J
81.67
D
95.67
it
HP
80.00
IC
82.00
PB
102.33
X
RX
80.00
HL
82.33
OT
104.00
X
DZ
80.00
EL
82.33
EN
107.00
X
TC
80.33
RA
82.33
CE
139.00
X
RL
80.33
PS
82.67
sv
246.33
X
PP
80.33
CP
82.67
LA
543.33
X
VC
80.67
QT
83.00
BI
612.00
X
EZ
80.67
N
83.33
A
626.00
X
SN
80.67
DO
84:00
UE
637.33
X
VE
84.00
sz
663.33
X
MT
Frequency distribution
•jbUU
l"
~t—
+4
—r"
-4
-2 0 +2
Normalized deviation of the mean from the. known value
+6
% responding labs
10-
Frequency distribution
3L
-6
Ala
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
It = Above control limit
II = Below control limit
-------
|