United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-96/024
February 1996
&EPA
Gross Alpha-Beta in
Water Performance
Evaluation Study
A Statistical Evaluation of
the October 27, 1995 Data
023RSL96 cov-024
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
October 27, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Gross Alpha-Beta in Water; October 27, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-21 04 or Patricia Honsa at 702/798-21 41 .
Sincerely,
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 1/16
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next hy a new pnfje or a thirk
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.
-------
2/16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EXPOSURE RESEARCH LABORATORY
P'°- BOX 93478 * LAS VEGAS' NV 89193'3478
OFFICE OF
RESEARCH AND DEVELOPMENT
A note regarding the Gross Alpha portion of the October 27, 1995
Gross Alpha-Beta in Water Performance Evaluation Study:
Both the July 1995 and October 1995 Gross Alpha-Beta in Water Performance
Evaluation (PE) Studies showed a significant difference between the grand average and
the known value for the gross alpha. This strongly implies there is bias in the method.
Our research indicates that matrix differences between the salt solids used to prepare the
calibration curve and the salts in the sample are the source of the bias.
The attached figure illustrates the changes in efficiency due to salt composition and
nuclide energy. The bottom curve was prepared with serial dilutions of laboratory tap
water. Laboratory tap water is also used to add variable amounts of dissolved solids to the
PE gross alpha/beta study samples. The second curve was prepared with serial dilutions
of sodium sulfate solution. The top curve was prepared the same way as the second curve
except that Am-241 was used as the alpha emitter. All the usual precautions apply. The
curves reflect the efficiencies for our counter; the curves in the figure are illustrative only;
and lastly, results for your laboratory may be different than shown in the figure.
At zero mass all the curves converge to the extent that the bias would not be noticeable in
a PE study. As the mass of solids increases, the difference between the two Th-230
curves becomes pronounced. For sample masses between 30 and 40 mg, typical range for
a 200 mL sample of the July 1995 or October 1995 study, the difference is between 50 to
70 percent.
To address the bias, we are recommending the procedure used in our laboratory. To a
volume of sample equal to that used for analysis (100-150 mL) add 120 pCi of Th-230.
Acidify the sample with 20-40 mL of concentrated nitric acid and evaporate by the
procedure attached to the PE study report sheet. The volume of PE sample provided is
sufficient to prepare triplicate 150 mL samples and duplicate spiked samples. Count the
spikes until approximately 1600 counts above background are acquired to a maximum of
200 minutes. Background in this case will be that of the PE samples. Subtract the average
count rate of the triplicate samples from the average count rate of the spikes and calculate
the efficiency. Use this efficiency to calculate the concentration of gross alpha in the PE
sample.
Recycled/Recyclable • Printed with Vegetable Oil Based Inks on 100% Recycled Paper (40% Postconsumer)
-------
An alternate procedure. After counting the triplicates, redissolve/reslurry the solids of two
of the samples in the planchet with dilute nitric acid (3-6M). Add the spike, mix well,
redry and count the spikes. This technique, though simple on the surface, requires
sufficient care so as not to lose sample volume, and that the Th-230 is thoroughly
incorporated into the dissolved salts. We recommend this only for laboratories with a
high degree of confidence in the analyst's ability to prepare the spikes by this technique.
You may use more or less spiked activity if you choose. The recommended activity of the
spike and the maximum count time were determined to provide 5 percent precision at 95
percent confidence for the spike at an efficiency as low as 3 percent. For higher
efficiencies the count time will be much shorter than 200 minutes. Additionally, we
recommend several practice runs to gain experience with the technique you choose.
So, why not send but our laboratory tap water and have the participating laboratories
prepare a curve? The tap water supplied to our laboratory varies in dissolved salt
composition. This was observed during our verification of the July 1995 PE sample. Our
QC samples showed a 40 percent bias when samples and spikes were quantified using a
calibration curve. Repeat measurements demonstrated the bias was consistent and not due
to analyst error. Therefore, preparing a curve with water from our laboratory does not
guarantee that the bias will be eliminated.
Collectively these procedures are single point calibration techniques and are not
prohibited by the approved methods. The curve concept was introduced in recognition of
the variable dissolved solids of water in given geographical areas.
If you have any questions or comments please call Stephen Pia at 702 798-2102.
-------
Q_
Q
i
Q.
O
0.2500
.0.2250
0.2000
0.1750
0.1500
0.1250
0.1000
0.0750
0.0500
0.0250
0.0000
ALPHA ATTENUATION CURVES
FOR
RADQA TENNELEC GP COUNTER
i i i r i i i i i i i i
| .Am-241 Isulfate system j
Th-230 isulfate $yst$m |
f * * : : i
ITHf230 nitriate system
i i i i i i
J I
0 10 20 30 40 50 60 70 80 90 100110120
Mg RESIDUAL SOLIDS
EQUATION: Y = AQ + A^ + A2X +
Th-230 sulfate
AQ = 0.2199
A1 = -2.914E-3
A2=1.8422E5
A3 = -4.4449E-8
Th-230 nitrate
0.2016
-4.495E-3
3.918E-5
-1.154E-7
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 3/16
Gross Alpha Statistical Summary 195 Participants
The known value of this nuclide is 51.2 pCi/1 with an expected precision of 12.8; the control limits
are 29.0 to 73.4; the warning regions are 29.0 to 36.4 and 66.0 to 73.4
36(18.5 %) Failed to respond «,
77(39.5 %) Out of control '
but not an outlier
Statistic
37(19.0 %) Within all limits
Respondents
• 45(23.1 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
29.99
8.68
75.27
28.93
-41.43
-2.45
29.67
-42.06
-2.48
Grand Avg 29.99
8.68
75.27
28.93
-41.43
-2.45
29.67
-42.06
-2.48
77(48.4 %) More than 3 norm. S.D..
45(28.3 %) Between 2 and 3 norm. S.D. •"
8(5.O %) Within 1 norm. S.D.
of known value
29(18.2 %) Between 1 and 2 norm. S.D.
-------
4 / 16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
Gross Alpha
Lab Res. 1
A
AE
AF
AH
AJ
AK
AL
AN
AP
AR
AU
AW
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
BN
BO
BS
C
CA
CE
CG
CJ
CK
CO
CP
CQ
CS
CX
D
DB
DD
DE
DH
DI
DM
DO
DR
• =
0 =
41.0
22.6
20.8
23.8
27.4
35.9
22.7
36.3
42.0
35.8
37.8
4.8
25.4
37.5
28.0
27.8
26.0
32.9
58.1
41.6
20.4
30.4
25.8
39.3
35.2
28.5
22.2
37.0
35.1
26.5
23.0
25.7
40.5
35.0
33.9
46.8
23.0
25.1
59.0
Res. 2
36.8
19.0
21.5
26.0
28.5
37.3
17.4
34.5
39.0
28.4
37.5
5.3
22.1
36.7
26.0
25.2
22.0
34.9
43.1
33.0
18.9
31.4
26.1
36.5
35.1
25.2
25.9
40.0
30.3
18.8
18.0
26.3
39.3
33.0
31.3
46.9
20.3
25.8
51.0
Res. 3
44.5
20.0
24.4
23.6
33.1
43.2
23.9
39.2
40.0
28.6
39.5
4.5
21.8
35.6
26.0
28.4
22.0
33.6
59.0
33.6
21.7
32.2
22.3
37.7
40.4
33.9
26.4
34.0
33.4
33.0
21.0
22.7
37.9
34.6
35.6
47.0
21.8
19.5
60.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
3.86
1.86
1.91
1.33
3.02
3.87
3.46
2.37
1.53
4.22
1.08
0.40
2.00
0.95
1.15
1.70
2.31
1.01
8.93
4.80
1.40
0.90
2.11
1.40
3.03
4.39
2.29
3.00
2.43
7.11
2.52
1.93
1.30
1.06
2.17
0.10
1.35
3.45
4.93
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known)
0.355
0.166
0.166
0.111
0.263
0.337
0.300
0.217
0.138
0.341
0.092
0.037
0.166
0.088
0.092
0.148
0.185
0.092
0.734
0.397
0.129
0.083
0.175
0.129
0.245
0.401
0.194
0.277
0.222
0.655
0.231
0.166
0.120
0.092
0.198
0.009
0.125
0.291
0.415
40.77
20.53
22.23
24.47
29.67
38.80
21.33
36.67
40.33
30.93
38.27
4.87
23.10
36.60
26.67
27.13
23.33
33.80
53.40
36.07
20.33
31.33
24.73
37.83
36.90
29.20
24.83
37.00
32.93
26.10
20.67
24.90
39.23
.::..:S::S:
34.20
33.60
46.90
21.70
23.47
56.67
TAG SYMBOLS
Determined
to be an
outlier
1.46
-1.28
-1.05
-0.75
-0.04
1.19
-1.17
0.90
1.40
0.13
1.12
-3.40
-0.93
0.89
-0.45
-0.39
-0.90
0.52
3.17
0.82
-1.31
0.18
-0.71
1.06
0.94
-0.11
-0.70
0.95
0.40
-0.53
-1.26
-0.69
1.25
0.57
0.49
2.29
-1.12
-0.88
3.61
IT = Above
II = Below
-1.41
-4.15
-3.92
-3.62
-2.91
-1.68
-4.04
-1.97
-1.47
-2.74
-1.75
-6.27
-3.80
-1.98
-3.32
-3.26
-3.77
-2.35
0.30
-2.05
-4.18
-2.69
-3.58
-1.81
-1.94
-2.98
-3.57
-1.92
-2.47
-3.40
-4.13
-3.56
-1.62
-2.30
-2.38
-0.58
-3.99
-3.75
'
0.74
control
control
Tag
II
||
u
•
II
II
II
•»p
II •
II
II
II
II
II
II
II
II
•
• •
II
II
•
••
limit
limit _,
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 5/16
Gross Alpha
Lab Res. 1
DS
DT
DZ
E
EB
EL
EO
ER
EV
EW
FF
FJ
FL
FN
FZ
GE
GQ
GT
GZ
HI
HK
HL
HP
I
1C
ID
J
JE
JG
JM
JN
JP
JQ
JS
JY
K
KE
KH
KT
KX
L
LF
LL
LR
• =
0 3
18.6
37.3
34.0
30.0
37.5
25.0
21.0
33.8
23.5
26.0
-.. ...•'". ''"'V' '•'".' *"'"' ' '•"'•'
32.0
23.6
46.2
18.0
24.6
22.7
35.8
29.4
18.6
23.6
49.5
23.2
25.0
33.8
30.6
37.7
29.1
24.4
31.0
40.5
36.0
20.0
40.0
32.0
11.6
Res. 2
15.7
35.0
38.1
35.5
40.3
19.8
29.0
35.3
23.2
27.0
29.0
25.8
37.6
23.0
23.1
22.7
30.1
44.1
21.7
22.9
48.9
22.8
27.3
42.7
30.5
40.8
29.8
31.6
42.1
38.0
38.0
24.0
39.8
32.0
10.6
Res. 3
20.7
35.8
36.1
39.2
43.0
18.4
27.0
34.2
23.4
32.0
34.0
33.4
39.4
20.0
25.0
22.7
29.2
29.0
19.6
20.3
54.2
^-:^r:--~ ••
22.5
28.5
36.6
29.3
43.8
33.3
29.0
35.8
39.0
40.0
22.0
46.8
32.0
12.9
No data submitted
Insufficient
data
x =
Exper.
Sigma
2.51
1.17
2.05
4.63
2.75
3.48
4.16
0.78
0.15
3.21
2.52
5.14
4.54
2.52
1.00
0.01
3.58
8.60
1.58
1.74
2.90
0.35
1.78
4.55
0.72
3.05
2.25
3.65
5.57
1.26
2.00
2.00
3.98
0.00
1.15
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.231
0.106
0.189
0.425
0.254
0.305
0.369
0.069
0.014
0.277
•;
0.231
0.452
0.397
0.231
0.088
0.000
0.305
0.697
0.143
0.152
0.245
0.032
0.162
0.411
0.060
0.281
0.194
0.332
0.512
0.115
0.185
0.185
0.323
0.000
0.106
18.33
36.03
36.07
34.90
40.27
21.07
25.67
34.43
23.37
,_ \
28.33
••
31.67
27.60
41.07
20.33
24.23
22.70
31.70
34.17
19.97
22.27
50.87
22.83
26.93
37.70
30.13
40.77
30.73
28.33
36.30
39.17
38.00
22.00
42.20
32.00
11.70
TAG SYMBOLS
Determined
to be an
outlier
-1.58
0.82
0.82
0.66
1.39
-1.21
-0.58
0.60
-0.90
-0.22
0.23
-0.32
1.50
-1.31
-0.78
-0.99
0.23
0.57
-1.36
-1.04
2.83
-0.97
-0.41
1.04
0.02
1.46
0.10
-0.22
0.85
1.24
1.08
-1.08
1.65
0.27
-2.47
11 = Above
II s Below
-4.45
-2.05
-2.05
-2.21
-1.48
-4.08
-3.46
-2.27
-3.77
X ,
-3.09
-2.64
-3.19
.••;•. .
-1.37
-4.18
-3.65
-3.86
-2.64
-2.30
-4.23
-3.92
-0.05
-3.84
-3.28
-1.83
-2.85
-1.41
-2.77
-3.09
-2.02
-1.63
-1.79
-3.95
-1.22
-2.60
-5.35
control
control
II
II
11
II
*
I
•
•
11
•
• •
II
II
II
II
II
•
II
II
•'' '• •
II
11
•
II
limit
limit
-------
6/16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
Gross Alpha
Lab Res. 1
LT
M
MA
MF
MQ
MV
MX
MY
N
NA
NB
NJ
NK
NO
NP
NT
O
OA
OB
OF
OS
OX
OY
OZ
P
PB
PG
PM
PQ
PR
PV
Q
QC
QM
QP
QQ
QT
QU
QW
QX
QZ
R
RB
RD
RG
• =
0 =
21.1
19.0
34.7
31.0
41.0
14.9
38.7
18.6
21.0
27.2
27.0
33.3
25.3
37.6
23.0
29.0
32.0
22.1
33.0
25.1
37.5
50.5
39.1
44.5
29.0
52.7
38,0
21.2
23.3
33.0
37.6
39.5
18.7
17.2
20.8
28.9
26.2
26.9
35.5
27.9
Res. 2
26.8
22.0
35.3
34.0.
42.0
15.7
36.6
15.2
21.0
31.3
28.0
46.6
27.9
41.3
27.0
29.0
30.0
23.5
34.0
21.4
33.0
48.6
39.1
42.2
35.9
49.6
26.7
18.9
26.9
35.0
35.7
33.3
18.5
19.1
20.2
33.4
23.6
23.3
34.6
28.8
Res. 3
22.0
18.0
33.7
36.0
40.0
17.9
40.8
14.0
22.0
26.1
29.0
30.3
26.6
40.5
28.0
33.0
33.0
26.2
32.0
23.6
36.5
47.8
39.3
38.7
26.5
53.2
37.0
17.6
20.6
26.0
38.3
31.0
18.5
18.3
19.6
31.7
24.9
20.6
36.2
27.0
No data submitted
Insufficient
data
X s
Exper.
Sigma
3.06
2.08
0.81
2.52
1.00
1.55
2.10
2.39
0.58
2.74
1.00
8.68
1.30
1.95
2.65
2.31
1.53
2.08
1.00
1.86
2.36
1.39
0.12
2.92
4.87
1.95
6.26
1.82
3.16
4.73
1.35
4.40
0.12
0.95
0.60
2.27
1.30
3.16
0.80
0.90
Rng anal
(R + SR) Average
0.263
0.185
0.074
0.231
0.092
0.138
0.194
0.212
0.046
0.240
0.092
0.752
0.120
0.171
0.231
0.185
0.138
0.189
0.092
0.171
0.208
0.125
0.009
0.268
0.434
0.166
0.521
0.166
0.291
0.415
0.120
0.392
0.009
0.088
0.055
0.208
0.120
0.291
0.074
0.083
23.30
19.67
34.57
33.67
41.00
16.17
38.70
15.93
21.33
28.20
28.00
36.73
26.60
39.80
26.00
30.33
31.67
23.93
33.00
23.37
35.67
48.97
39.17
41.80
30.47
51.83
33.90
19.23
23.60
31.33
37.20
34.60
18.57
18.20
20.20
31.33
24.90
23.60
35.43
27.90
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known)
-0.90
-1.40
0.62
0.50
1.49
-1.87
1.18
-1.90
-1.17
-0.24
-0.27
0.91
-0.46
1.33
-0.54
0.05
0.23
-0.82
0.41
-0.90
0.77
2.57
1.24
1.60
0.07
2.96
0.53
-1.46
-0.86
0.18
0.98
v 0.62
-1.55
-1.59
-1.32
0.18
-0.69
-0.86
0.74
' -0.28
IT s Above
•U 3 Below
-3.78
-4.27
-2.25
-2.37
-1.38
-4.74
-1.69
-4.77
-4.04
-3.11
-3.14
-1.96
-3.33
-1.54
-3.41
-2.82
-2.64
-3.69
-2.46
-3.77
-2.10
-0.30
-1.63
-1.27
-2.81
0.09
-2.34
-4.33
-3.73
-2.69
-1.89
-2.25
-4.42
-4.47
-4.19
-2.69
-3.56
-3.73
-2.13
-3.15
control
control
Tng
11
U
.
U '
*
•
U
Jl
u
li
11
u
' •
II
u
Ji
*
- JJ
11
•U
11
11
u
limit
limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 7/16
Gross Alpha
Lab Res. 1
RI
RR
RU
RV
RW
RZ
S
sc
SD
SF
SG
SI
SL
SM
SN
SO
SR
ss
ST
su
sx
sz
T
TD
TG
TH
TI
TJ
TL
TN
TO
TQ
TW
TY
U
UA
UE
UN
UP
UQ
UW
UY
VA
VC
VG
• =
0 =
V-
28.3
30.0
27.6
26.6
43.4
34.8
25.6
25.9
33.2
24.5
35.0
25.7
24.1
35.3
33.8
21.0
30.4
35.4
34.0
28.3
46.3
20.0
33.3
22.5
37.4
20.5
34.1
34.3
33.1
24.3
46.7
30.0
33.4
7.9
Res. 2
27.1
34.0
31.0
27.4
44.3
36.3
24.6
25.1
35.3
25.1
38.6
27.0
22.2
33.8
39.7
18.7
27.0
41.3
34.5
30.1
42.2
20.5
37.1
29.6
33^8
20.9
35.2
20.4
31.3
24.4
39.8
31.0
32.8
8.7
Res. 3
24.5
30.0
28.6
27.0
42.0
35.9
29.0
26.3
37.1
27.9
36.5
25.5
26.7
34.4
36.9
22.8
27.1
37.3
29.7
27.9
47.4
20.2
36.6
27.7
26.9
18.2
34.6
22.8
31.0
24.3
48.9
28.0
28.2
9.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
1.94
2.31
1.75
0.40
1.16
0.78
2.31
0.61
1.95
1.81
1.81
0.81
2.26
0.75
2.95
2.06
1.93
3.01
2.64
1.17
2.74
0.25
2.06
3.68
5.34
1.46
0.55
7.43
1.14
0.06
4.75
1.53
2.84
0.57
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.175
0.185
0.157
0.037
0.106
0.069
0.203
0.055
0.180
0.157
0.166
0.069
0.208
0.069
0.272
0.189
0.157
0.272
0.222
0.102
0.240
0.023
0.175
0.328
0.485
0.125
0.051
0.641
0.097
0.005
0.420
0.138
0.240
0.051
26.63
31.33
29.07
27.00
43.23
35.67
26.40
25.77
35.20
25.83
36.70
26.07
24.33
34.50
36.80
20.83
28.17
38.00
32.73
28.77
45.30
20.23
35.67
26.60
' .'•",''.;-"'-•;•.••,-;.•*
32.70
19.87
34.63
25.83
31.80
24.33
45.13
29.67
31.47
8.53
TAG SYMBOLS
Determined
to be an
outlier
-0.45
0.18
-0.12
-0.40
1.79
0.77
-0.49
-0.57
0.71
-0.56
0.91
-0.53
-0.76
0.61
0.92
-1.24
-0.25
1.08
0.37
-0.17
2.07
-1.32
0.77
-0.46
0.37
-1.37
0.63
:-•'•<•• - " .
-0.56
0.25
-0.76
2.05
-0.04
0.20
-2.90
1T = Above
II s Below
-3.32 II
-2.69
: • -• • '.
-3.00
-3.27 II
-1.08
-2.10
-3.36 U
-3.44 II
-2.17
: :;"•,."".. ..
-3.43 II
-1.96
-3.40 II
-3.64 II
-2.26
-1.95
-4.11 II
-3.12 II
^,-?— ;, .;:-. "
-1.79
-2.50
-3.04 II
-0.80
-4.19 H
-2.10
-3.33 II
• '•'*"••' . • '•
-2.50
-4.24 II
•
-2.24
•
-3.43 U
-2.63
, «.-
• " •
-3.64 II
-0.82
-2.91
-2.67
,. . ' •
.- ' •
-5.77 II
•
control limit
control limit
-------
8 / 16 CRD-
Gross Alpha
Lab Res. 1,
VH 21,4
VI 22.0
VJ 14.7
VO 30.1
VT
W 48.4
WD
WE 29.3
WF 16.0
WH
WJ 22.6
WK 25.4
WN
WO 29.4
X 17.9
Average
4.87
8.53
11.70
15.93
16.17
16.70
17.27
17.93
18.20
18.33
18.57
18.67
19.23
19.67
19.87
19.97
20.20
20.23
20.33
20.33
20.53
20.67
20.83
21.07
21.33
21.33
21.37
LV Performance Evaluation: Gross Alpha-Beta in Water,
Res. 2
- \ *
Tag
U
U
Ji
U
U
U
U
U
11
u
u
u
u
u
u
u
u
11
u
u
u
11
u
11
11
11
u
23.6
23.9
19.9
26.6
41.0
11.7
18.0
24.9
30.0
34.8
15.5
Res. 3
22.4
18.2
19.2
26.7
39.1
9.1
22.0
22.3
30.9
28.0
18.4
Data
Lab
AZ
VC
LR
NB
MX
WE
X
VJ
QW
DS
QU
WF
Q
M
TN
1C
QX
TG
HI
BN
AE
CP
SS
EL
NJ
AN
VI
Exper.
Sigma
1.10
2.90
2.82
1.99
4.91
10.99
3.06
1.42
2.95
3.59
1.55
Rng anal
(R + SR)
0.102
0.263
0.240
0.162
0.429
0.932
0.277
0.120
0.254
0.314
0.134
27-Oct-1995 1
Normalized deviation
Average (grand-avg) (known)
22.47
21.37
17.93
27.80
42.83
f "•
16.70
18.67
23.27
28.77
30.73
' 17.27
-1.02
-1.17
-1.63
-0.30
1.74
-1.80
-1.53
-0.91
-0.17
0.10
-1.72
-3.89
-4.04
-4.50
-3.17
-1.13
-4.67
-4.40
-3.78
-3.04
-2.77
-4.59
Tag
11
11
U
11
•
' •
u
u
• ' ,
Jl
11
•
11
sorted by Laboratory Average
Average
• = No data submitted
0 = Insufficient data
X
21.70
22.00
22.23
22.27
22.47
22.70
22.83
23.10
23.27
23.30
23.33
23.37
23.37
23.47
23.60
23.60
23.93
24.23
24.33
24.33
24.47
24.73
24.83
24.90
24.90
25.67
25.77
Tag
U
U
U
U
U
U
u
11
u'
u
u
u
u
u
u
u
ji .
ii
11
u
ii
ii
ji
n
n
Ji
n
Lab
DH
KX
AF
ID
VH
HL
JG
BA
WJ
LT
BI
OZ
EV
DI
RB
QC
OX
HK
UN
SN
AH
BS
CG
R
CQ
EO
SD
Average
25.83
25.83
26.00
26.07
26.10
26.40
26.60
26.60
26.63
26.67
26.93
27.00
27.13
27.60
27.80
27.90
28.00
28.17
28.20
28.33
28.33
28.77
28.77
29.07
29.20
29.67
29.67
TAG SYMBOLS
= Determined to be an outlier
Tag
11
u
u
11
11
11
u
u
11
11
11
11
u
11
11
u
11
u
11
11
u
u
u
It = Above
U = Below
control
control
Lab
TY
SI
OA
SM
CO
sc
TI
NT
RI
BG
JM
RW
BH
FZ
VO
RG
NO
ST
NK
K
FF
WK
T
RV
CE
UQ
AK
limit
limit
-------
CRD-LV Performance Evaluation:
Gross Alpha
Average
30.13
30.33
30.47
30.73
30.73
30.93
31.33
31.33
31.33
31.33
31.47
31.67
31.67
31.70
31.80
32.00
32.70
32.73
32.93
33.00
33.60
33.67
33.80
33.90
34.17
34.20
% responding
-6
Data sorted by
Tag Lab
JP
OF
PQ
wo
JS
AU
RR
QZ
QP
BO
UW
OS
FN
HP
U
LF
TL
SZ
CK
OY
DD
MQ
BK
PV
I
DB
Average
34.43
34.50
34.57
34.60
34.63
34.90
35.20
35.43
35.67
35.67
35.67
36.03
36.07
36.07
36.30
36.60
36.67
36.70
36.73
36.80
36.90
37.00
37.20
37.70
37.83
38.00
Gross Alpha-Beta in Water, 27-Oct-1995 9/16
Laboratory Average
Tag Lab
ER
SO
MF
QT
TQ
E
SF
RD
TH
S
P
DT
DZ
BM
KE
BC
AP
SL
NP
SR
CA
CJ
QQ
JN
C
sx
Average Tag
38.00
38.27
38.70
38.80
39.17
39.17
39.23
39.80
40.27
40.33
40.77
40.77
41.00
41.07
41.80
42.20
42.83
43.23
45.13
45.30
46.90
48.97
50.87
51.83
53.40
56.67
Lab
KT
AW
NA
AL
PG
KH
CS
O
EB
AR
JQ
A
MV
GZ
PM
L
W
RZ
UP
TD
DE
PB
J
PR
BL
DO
\a\)S Frequency distribution
..illlllllil
•••
Hhii^
-4 -2
0 +2 +4
+6
Normalized deviation of the mean from the known value
% responding
lu- — - - - -
-6
lobs Frequency distribution
•lllll
-4 -2
••• 1 •••
lllllllllll..T _ T
I T J2 T +4
+6
Normalized deviation of the mean from the grand average
• s No data submitted TAG SYMBOLS ft = Above control
0 s Insufficient data x = Determined to be an outlier U = Below control
limit
limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 10 / 16
Gross Beta Statistical Summary 195 Participants
The known value of this nuclide is 24.8 pCi/1 with an expected precision of 5.0; the control limits
are 16.1 to 33.5; the warning regions are 16.1 to 19.0 and 30.6 to 33.5
33(16.9 %) Failed to respond «%j>
2( 1.0 %) Outliers •' ,
11 (5.6 %) Out of control '
but not an outlier
Statistic
; 123(63.1 %) Within all limits
Respondents
~- 26(13.3 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
27.16
5.16
26.67
19.01
9.53
0.46
27.50
10.89
0.52
Grand Avg 27.09
4.43
19.58
16.34
9.23
0.52
27.50
10.89
0.61
13(8.O %) More than 3 norm. S.D. •„
26(16.O %) Between 2 and 3 norm. S.D.
61(37.7 %) Within 1 norm. S.D.
of known value
62(38.3 %) Between 1 and 2 norm. S.D.
-------
11/16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
V
Gross Beta
Lab
A
AE
AF
AH
AJ
AK
AL
AN
AP
AR
AU
AW
AZ
BA
*BB
BC
BG
BH
BI
BK
BL
BM
BN
BO
BS
C
CA
CE
CG
CJ
CK
CO
CP
CQ
CS
cx
D
DB
DD
DE
DH
DI
DM
DO
DR
• =
0 EE
Res. 1
27.6
25.7
28.7
30.4
29.4
27.2
34.1
25.5
29.0
31.6
31.0
20.4
27.9
19.6
27.0
26.9
42.0
30.5
26.1
30.4
23.7
22.5
30.9
22.2
26.1
27.5
21.8
25.0
28.1
16.8
31.0
27.0
24.0
29.5
31.3
25.3
28.7
20.5
29.6
26.0
Res. 2
28.1
22.0
23.6
28.7
33.9
28.6
. 35.4
24.9
31.0
31.3
31.3
18.4
32.5
22.1
27.0
26.4
38.0
30.7
28.0
30.7
25.3
25.3
30.3
24.3
23.2
26.0
23.9
27.0
31.9
20.2
27.0
28.0
27.0
26.8
29.1
25.4
28.6
20.8
27.6
18.0
Res. 3
25.2
24.3
25.1
28.1
^
30.1
26.7
32.8
23.8
30.0
31.7
31.6
13.8
26.1
19.9
27.0
27.8
36.0
32.0
30.2
30.2
27.5
26.4
29.9
22.4
23.6
25.2
21.0
24.0
31.8
20.6
29.0
29.0
24.2
27.3
29.7
25.4
27.8
21.4
30.6
26.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
1.55
1.87
2.62
1.19
2.42
0.98
1.30
0.86
1.00
0.21
0.30
3.38
3.30
1.37
0.00
. 0.71
3.06
0.81
2.05
0.25
1.91
2.01
0.50
1.16
1.57
1.17
1.50
1.53
2.17
2.09
2.00
1.00
1.68
1.44
1.14
0.06
0.49
0.46
1.53
4.62
Rng anal
(R + SR)
0.343
0.437
0.602
0.272
0.532
0.224
0.307
0.201
0.236
0.047
0.071
0.780
0.756
i
0.295
0.000
0.165
0.709
0.177
0.484
0.059
0.449
0.461
0.118
0.248
0.343
0.272
0.343
0.354
0.449
0.449
0.473
0.236
0.354
0.319
0.260
0.012
0.106
0.106
0.354
0.945
Normalized deviation
Average
26.97
24.00
25.80
29.07
31.13
27.50
34.10
24.73
30.00
31.53
31.30
17.53
28.83
20.53
27.00
27.03
38.67
31.07
28.10
30.43
25.50
24.73
30.37
22.97
24.30
26.23
22.23
25.33
30.60
19.20
29.00
28.00
25.07
27.87
30.03
25.37
28.37
20.90
29.27
23.33
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known)
-0.04
-1.07
-0.45
0.68
1.40
0.14
2.43
-0.82
1.01
1.54
1.46
-3.31
0.60
-2.27
-0.03
-0.02
4.01
1.38
0.35
1.16
-0.55
-0.82
1.14
-1.43
-0.97
-0.30
-1.68
-0.61
1.22
-2.73
0.66
0.32
-0.70
\
0.27
1.02
-0.60
0.44
-2.14
0.75
-1.30
ft = Above
U = Below
0.75
-0.28
0.35
1.48
2.19
0.94
3.22
-0.02
1.80
2.33
2.25
-2.52
1.40
-1.48
0.76
0.77
4.80
2.17
1.14
1.95
0.24
-0.02
1.93
-0.64
-0.17
0.50
-0.89
0.18
2.01
-1.94
1.45
1.11
0.09
1.06
1.81
0.20
1.24
-1.35
1.55
-0.51
control
control
Tag
'•
ft
*
ft
•
••
•
limit
limit
-------
- ' - 1
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 12/16
Gross Beta
Lab
DS
DT
DZ
E
EB
EL
EO
,"VER'
EV
EW
EX
FF
FJ
FL
FN
FZ
GE
GQ
GT
GZ
m
HK
HL
HP
I
1C
ID
J
JE
JG
JM
JN
JP
JQ
JS
JY
K
KE
KH
KT
KX
L
LF
LL
LR
Res. 1
23.2
29.7
25.0
30.1
30.5
27.0
29.0
26.9
31.5
27.0
31.0
24.8
28.0
24.0
30.1
29.0
35.4
33.4
26.0
28.9
25.6
• " ;;;< • ..•'.•/•
29.9
38.1
25.5
26.0
15.1
25.6
27.3
24.0
30.0
24.0
31.0
25.1
30.0
,' •-- •: •••:V.:;. -,
23.3
Res. 2
20.8
30.4
26.9
30.2
30.8
28.3
29.0
27.1
27.1
26.0
30.0
19.2
28.0
22.0
31.6
29.0
33.6
31.0
28.9
26.9
25.3
, • ':'••; ;;;:-'.-
28.9
35.3
29.0
26.2
19.2
27.0
28.8
27.3
28.0
28.0
28.0
25.3
27.0
\ ".'.•'•' •-' •' '. /'''
13.7
Res. 3
33.4
28.6
23.5
29.5
, 29.5
28.4
30.0
27.7
30.6
26.0
28.0
25.4
26.0
26.0
31.4
29.0
36.6
33.2
27.1
25.7
26.3
. ' ,' ; '•'•• •'"' •' . .
29.7
36.1
29.1
26.5
40.1
25.2
25.9
23.6
29.0
30.0
30.0
24.7
29.0
13.0
• = No data submitted
0 3
Insufficient
data
X 3.
Exper.
Sigma
6.69
0.91
1.70
0.38
0.68
0.78
0.58
0.42
2.32
0.58
1.53
3.42
1.15
2.00
0.81
0.00
1.51
1.33
1.46
1.62
0.51
0.53
1.44
2.05
0.25
13.41
0.95
• ' '• ' ..'• , .;„, . ' .
1.45
2.03
1.00
3.06
1.53
0.31
1.53
5.76
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known)
1.930
0.213
0.402
0.083
0.154
0.165
0.118
0.095
0.520
0.118
0.354
0.732
0.236
0.473
0.177
0.000
0.354
0.284
0.343
0.378
0.118
0.118
0.331
0.425
0.059
4.721
0.213
0.343
0.437
0.236
0.709
0.354
0.071
0.354
1.413
25.80
29.57
25.13
29.93
30.27
27.90
29.33
27.23
29.73
26.33
29.67
23.13
27.33
24.00
31.03
29.00
35.20
32.53
27.33
27.17
25.73
29.50
36.50
27.87
26.23
24.80
25.93
27.33
24.97
29.00
27.33
29.67
25.03
28.67
, :;-,••;.;•••-:;':•;•• i;v;-y-
16.67
TAG SYMBOLS
Determined
to be an
outlier
-0.45
0.86
-0.68
0.99
1.10
0.28
0.78
0.05
0.92
-0.26
0.89
-1.37
0.08
-1.07
1.37
0.66
2.81
1.89
0.08
0.03
-0.47
0.83
3.26
0.27
-0.30
-0.79
-0.40
0.08
-0.74
0.66
0.08
0.89
-0.71
0.55
.
-3.61
ft = Above
U 5 Below
0.35
1.65
0.12
1.78
1.89
1.07
1.57
0.84
1.71
0.53
1.69
-0.58
0.88
-0.28
2.16
1.45
3.60
2.68
0.88
0.82
0.32
1.63
4.05
1.06
0.50
0.00
0.39
0.88
0.06
1.45
0.88
1.69
0.08
1.34
•'••'•••'.. \ ' .
-2.82
control
control
Tag
' • ',
*
•
•
*
•
•
ft
•
ft
• .
•
limit
limit
-------
rr ^
13/16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995
Gross Beta
Lab
LT
M
MA
MF
MQ
MV
MX
MY
N
NA
NB
NJ
NK
NO
NP
NT
O
OA
OB
OF
OS
OX
OY
OZ
P
PB
PG
PM
PQ
PR
PV
Q
QC
QM
QP
QQ
QT
QU
QW
QX
QZ
R
RB
RD
RG
• =
0 =
Res. 1
25.0
9,6
19.0
23.7
36.0
28.0
19.9
28.7
23.2
22.6
32.6
24.0
15.0
28.9
26.0
29.0
24.0
30.0
28.9
20.0
31.7
30.4
25.7
25.6
27.8
25.7
32.0
29.5
30.2
23.6
28.0
30.6
24.9
21.3
20.2
27.6
24.5
38.1
25.7
31.6
31.0
Res. 2
34.0
8.6
24.4
24.4
28.0
32.0
16.3
28.2
20.1
21.0
33.8
25.0
7.7
29.2
28.2
28.0
23.0
31.0
27.9
19.0
29.6
28.0
26.1
24.4
31.3
25.4
30.5
19.5
31.5
24.1
30.0
29.1
47.1
20.0
18.4
28.0
25.3
27.8
24.1
29.8
31.8
Res. 3
32.3
10.6
18.7
24.2
30.0
30.0
18.9
29.1
16.5
20.0
33.5
26.0
17.5
29.1
27.1
27.0
23.0
29.0
31.1
19.0
25.6
33.8
26.9
27.2
26.9
28.1
29.7
22.9
30.2
25.7
30.0
31.3
26.5
18.7
18.6
26.9
24.5
33.0
23.6
31.3
31.2
No data submitted
Insufficient
data
x =
Exper.
Sigma
4.78
1.00
3.21
0.36
4.16
2.00
1.86
s -1:
0.45
3.35
1.31
0.62
1.00
5.09
0.15
1.10
1.00
0.58
1.00
1.64
0.58
3.10
2.91
0.61
1.40
2.32
1.48
1.17
5.08
0.75'
1.10
1.15
1.12
12.38
1.30
0.99
0.56
0.46
5.15
1.10
0.96
0.42
Rng anal Normalized deviation
(R + SR) Average (grand- avg) (known) Tag
1.120
0.236
0.673
0.083
0.945
0.473
0.425
0.106
0.791
0.307
0.142
0.236
1.300
0.035
0.260
0.236
0.118
0.236
0.378
0.118
0.721
0.685
0.142
0.331
0.520
0.319
0.272
1.345
0.154
0.248
0.236
0.260
4.091
0.307
0.213
0.130
0.095
1.413
0.248
0.213
0.095
30.43
9.60
20.70
24.10
31.33
30.00
18.37
28.67
19.93
21.20
33.30
25.00
13.40
29.07
27.10
28.00
23.33
30.00
29.30
19.33
28.97
30.73
26.23
25.73
28.67
26.40
30.73
23.97
30.63
24.47
29.33
30.33
32.83
20.00
19.07
27.50
24.77
32.97
24.47
30.90
31.33
TAG SYMBOLS
Determined
to be an
outlier
1.16
-6.06
-2.21
-1.04
1.47
1.01
-3.02
0.55
-2.48
-2.04
2.15
-0.72
-4.74
0.68
0.00
0.32
-1.30
1.01
0.77
-2.69
0.65
1.26
-0.30
-0.47
0.55
-0.24
1.26
-1.08
1.23
-0.91
0.78
1.12
1.99
-2.46
-2.78
0.14
-0.80
2.04
-0.91
1.32
1.47
ft = Above
II = Below
1.95
-5.27 x
-1.42
-0.24
2.26
1.80
-2.23
, ' »
' •• • -
1.34
-1.69
-1.25
2.94
0.07
-3.95 li
1.48
0.80
1.11
- *
-0.51
1.80
1.56
-1.89
1.44
2.06
0.50
0.32
1.34
0.55
2.06
-0.29
2.02
-0.12
•
1.57
1.92
2.78
-1.66
-1.99
0.94
-0.01
2.83
-0.12
2.11
2.26
control limit
control limit
-------
ft
^
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 14 / 16
Gross Beta
Lab
HI
RR
RU
RV
RW
RZ
S
sc
SD
SF
SG
SI
SL
SM
SN
SO
SR
ss
ST
su
sx
sz
T
TD
TG
TH
TI
TJ
TL
TN
TO
TQ
TW
TY
U
UA
UE
UN
UP
UQ
UW
UY
VA
VC
VG
• =
1 0 3
Res. 1
30.3
30.0
34.6
16.6
36.0
29.1
27.5
16.7
29.3
21.1
31.0
24.6
27.3
26.7
28.5
24.9
25.7
25.0
22.9
26.0
15.8
18.2
21.2
30.2
36.9
33.0
22.3
30.7
31.9
28.5
35.8
28.0
29.5
26.5
18.9
Res. 2
29.4
28.0
34.3
19.8
35.3
29.4
24.8
14.4
29.0
20.0
30.0
28.6
27.9
28.8
34.4
23.0
27.9
28.7
28.1
24.7
16.8
20.6
28.9
29.6
36.2
28.6
22.5
31.0
30.8
27.2
39.5
29.0
29.9
26.7
18.2
Res. 3
27.3
27.0
33.9
18.2
29.8
30.0
27.5
18.7
30.8
23.6
29.0
24.1
26.7
29.6
31.4
22.0
28.0
23.7
24.8
26.6
19.2
18.7
23.5
29.5
..••',,.-, • • '
33.2
32.7
23.7
27.7
30.3
24.4
29.8
29.0
29.5
25.6
20.3
No data submitted
Insufficient
data
x =
Exper.
Sigma
1.54
1.53
0.35
1.60
3.40
0.46
1.56
2.15
0.96
1.84
1.00
2.47
0.60
1.50
2.95
1.47
1.30
2.59
2.63
0.97
1.75
1.27
3.95
0.38
1.97
2.46
0.76
1.82
0.82
' .'• ~-;:':- - ...• •
2.10
4.90
0.58
0.23
0.59
1.07
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.354
0.354
0.083
0.378
0.732
0.106
0.319
0.508
0.213
0.425
0.236
0.532
0.142
0.343
0.697
0.343
0.272
0.591
0.614
0.224
0.402
0.284
0.910
0.083
0.437
0.520
0.165
0.390
0.189
0.484
1.278
0.118
0.047
0.130
0.248
29.00
28.33
34.27
18.20
33.70
29.50
26.60
16.60
29.70
21.57
30.00
25.77
27.30
28.37
31.43
23.30
27.20
25.80
25.27
25.77
17.27
19.17
24.53
29.77
35.43
31.43
22.83
29.80
31.00
26.70
35.03
28.67
29.63
26.27
19.13
TAG SYMBOLS
Determined
to be an
outlier
0.66
0.43
2.49
-3.08
2.29
0.83
-0.17
-3.63
0.90
-1.91
1.01
-0.46
0.07
0.44
1.50
-1.31
0.04
-0.45
-0.63
-0.46
-3.40
-2.74
-0.89
0.93
2.89
1.50
-1.47
0.94
1.35
-0.13
2.75
0.55
0.88
-0.29
-2.76
ft = Above
U s Below
1.45
1.22
*
3.28 IT
-2.29
3.08 It
1.63
0.62
-2.84
1.70
• •
-1.12
1.80
0.33
0.87
1.24
2.30
-0.52
0.83
•
0.35
0.16
0.33
-2.61
-1.95
-0.09
1.72
•
3.68 It
2.30
• ,
-0.68
•
1.73
2.15
,•
•
0.66
3.54 fT
1.34
1.67
0.51
'-. V... ' •
-1.96
•;• ::"••.:• •..".
control limit
control limit
-------
15 / 16 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water,
Gross Beta
Lab Res. 1 Res. 2
VH 27.9 26.5
VI 16.2 16.8
VJ 22.9 23.4
VO 35.7 32.1
VT ', ' '
W 26.4 25.4
WE 23.4 38.9
WF 29.0 29.0
WH
WJ 31.7 42.2
WK 53.0 52.0
WN
WO 17.6 24.0
X 29.0 29.8
Average Tag
9.60 x
13.40 U
16.23
16.60
16.67
17.27
17.53
18.20
18.37
19.07
19.13
19.17
19.20
19.33
19.93
20.00
20.20
20.53
20.70
20.90
21.20
21.57
22.23
22.83
22.90
22.97
23.13
• = No data submitted
0 = Insufficient data
27-Oct-1995 ]
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
22.7 2.69 0.614 25.70
15.7 0.55 0.130 16.23
22.4 0.50 0.118 22.90
34.5 1.83 0.425 34.10
,,,. 5
30.7 2.82 0.626 27.50
26.0 8.30 2.583 29.43
27.0 1.15 0.236 28.33
33.5 5.62 1.458 35.80
65.0 7.23 2.020 56.67
19.0 3.36 0.756 20.20
32.2 1.67 0.378 30.33
Data sorted by Laboratory Average
Lab Average Tag Lab Average
M 23.30 SS 25.77
NP 23.33 OF 25.77
VI 23.33 DO 25.80
SD 23.97 PV 25.80
LR 24.00 HI 25.80
TD 24.00 AE 25.93
AZ 24.10 MF 26.23
RW 24.30 CA 26.23
MX 24.47 KB 26.23
QW 24.47 QC 26.27
VC 24.53 TH 26.33
TG 24.73 BO 26.40
CO 24.73 AP 26.60
OY 24.77 QZ 26.70
NB 24.80 JQ 26.97
QU 24.97 KE 27.00
WO 25.00 NO 27.03
BC 25.03 L 27.10
MA 25.07 CS 27.17
DI 25.13 DZ 27.20
NJ 25.27 SZ 27.23
SI 25.33 CJ 27.30
CG 25.37 DE 27.33
TQ 25.50 BN 27.33
VJ 25.70 VH 27.33
C 25.73 J 27.33
FZ 25.73 PG 27.50
TAG SYMBOLS
x = Determined to be an outlier
-0.48 0.31
-3.76 -2.97
-1.45 -0.66
2.43 3.22 ft
; , ,;», , ^,
0.14 0.94
0.81 1.61
0.43 1.22
•
3.02 3.81 It
10.25 11.04 x
•
-2.39 -1.59
1.12 1.92
Tag Lab
T
SM
sx
DS
AF
JS
PB
JP
CE
UY
FF
PQ
SC
UN
A
BG
BH
O
ID
ST
EV
SN
KT
K
1C
GE
W
IT = Above control limit
U = Below control limit J
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 27-Oct-1995 16
Gross Beta
Average Tag
27.50
27.50
27.87
27.87
27.90
28.00
28.00
28.10
28.33
28.33
28.37
28.37
28.67
28.67
28.67
28.67
28.83
28.97
29.00
29.00
29.00
29.00
29.07
29.07
29.27
29.30
29.33
% responding labs
0— —
-6 -4
% responding labs
M_ _ —
° 5 ' -4
• s No data submitted
0 = Insufficient data
Data sorted by Laboratory Average
Lab
QX
AL
JN
DB
EL
OA
CQ
BL
WF
RR
SO
DH
UQ
PM
NA
LF
BA
OZ
RI
KH
HL
CP
NT
AH
DM
OX
QP
Average Tag Lab
29.33 EO
29.43 WE
29.50 S
29.50 JG
29.57 DT
29.63 UW
29.67 KX
29.67 FN
29.70 SF
29.73 EW
29.77 TI
29.80 TY
29.93 E
30.00 SL
30.00 OS
30.00 MV
30.00 AR
30.03 DD
30.27 EB
30.33 X
30.33 QQ
30.37 BS
30.43 LT
30.43 BM
30.60 . CK
30.63 Q
30.73 P
Average Tag
30.73
30.90
31.00
31.03
31.07
31.13
31.30
31.33
31.33
31.43
31.43
31.53
32.53
32.83
32.97
33.30
33.70 ft
34.10 ft
34.10 ft
34.27 ft
35.03 ft
35.20 ft
35.43 ft
35.80 ft
36.50 ft
38.67 ft
56.67 x
Frequency distribution
• • • •••••
T__ ...... _• ihLliilllll _. - _
-2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
_ _ • ••••
... ...... _• lllllllllllll. ... - T
-2 0 +2 +4
Normalized deviation of the mean from the grand average
TAG SYMBOLS ft = Above control
x = Determined to be an outlier II s Below control
/16
Lab
PR
RD
U
HK
BK
AK
AW
RG
MQ
TN
SR
AU
I
QT
R
NK
RZ
VO
AN
RV
UP
HP
TL
WJ
JM
BI
WK
+6
+6
limit
limit
------- |