United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
E PA/600/R -97/002
January 1997
&EPA Gamma in Water
Performance Evaluation
Study
A Statistical Evaluation of
the November 8, 1996 Data
JUL 2005
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"J;S;EPA LIBRARY REQON 10 MATERIALS
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-------
Gamma in Water
Performance Evaluation Study
November 8, 1996
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 Gamma in Water; November 8, 1996.
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 Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Sincerely,
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 1/37
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next, 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 tire 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. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. 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. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
The Range Analysisฎ + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
3/37
Cobalt-60 Statistical Summary 169 Participants
The known value of this nuclide is 44.0 pCi/1 with an expected precision of 5.0; the control limits
are 35.3 to 52.7; the warning regions are 35.3 to 38.2 and 49.8 to 52.7
24(14.2 %) Failed to respond
128(75.7 %) Within all limits
4(2.4 %) Outliers ป' / \Nv
1 (0.6 %) Out of control ' \|\
*** 12(7.1 %) In warning zone
but not an outlier
|
I
but within control
Statistic
Respondents
Non-outliers
Mean
46.77
Grand Avg 44.53
Std. Dev.
25.41
2.87
Variance
645.52
8.24
% Coef. ofVar.
54.33
6.45
% deviation of mean from known value
6.29
1.21
Norm. dev. of mean from known value
0.11
0.19
Median
44.33
44.33
% deviation of median from known value
0.76
0.76
Norm. dev. of median from known value
0.01
0.12
5(3.4 %) More than 3 norm. S.D.
* %
12(8.3 %) Between 2 and
. 108(74.5 %) Within 1 norm. S.D.
of known value
Between 1 and 2 norm. S.D.
=
-------
ff
N
4/37 CRD-LV Performance Evaluation: Gamma in Water,
*
8-Nov-1996
Cobalt-60
-
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
42.0
44.0
42.0
1.15
0.236
42.67
-0.65
-0.46
AE
47.0
46.0
46.0
0.58
0.118
46.33
0.62
0.81
AF
44.0
45.0
47.0
1.53
0.354
45.33
0.28
0.46
AH
44.0
41.0
43.0
1.53
0.354
42.67
-0.65
-0.46
AI
40.0
39.0
41.0
1.00
0.236
40.00
-1.57
-1.39
AJ
44.0
45.0
44.0
0.58
0.118
44.33
-0.07
0.12
AK
45.0
45.0
45.0
0.00
0.000
45.00
0.16
0.35
AL
44.0
44.0
42.0
1.15
0.236
43.33
-0.42
-0.23
AP
AU
43.0
43.0
41.0
1.15
0.236
42.33
-0.76
-0.58
AW
43.0
44.0
48.0
2.65
0.591
45.00
0.16
0.35
AY
40.0
40.0
40.0
0.00
0.000
40.00
-1.57
-1.39
AZ
46.0
44.0
45.0
1.00
0.236
45.00
0.16
0.35
BA
50.0
51.0
48.0
1.53
0.354
49.67
1.78
1.96
BB
46.0
47.0
45.0
1.00
0.236
46.00
0.51
0.69
BC
44.0
43.0
38.0
3.21
0.709
41.67
-0.99
-0.81
BG
BH
48.0
47.0
47.0
0.58
0.118
47.33
0.97
1.15
BK
45.0
45.0
45.0
0.00
0.000
45.00
0.16
0.35
BL
42.0
44.0
45.0
1.53
0.354
43.67
-0.30
-0.12
BM
43.0
42.0
42.0
0.58
0.118
42.33
-0.76
-0.58
BN
BO
44.0
43.0
46.0
1.53
0.354
44.33
-0.07
0.12
BW
C
45.0
45.0
48.0
1.73
0.354
46.00
0.51
0.69
CA
45.0
45.0
46.0
0.58
0.118
45.33
0.28
0.46
CC
50.0
50.0
50.0
0.00
0.000
50.00
1.89
2.08
CE
43.0
42.0
43.0
0.58
0.118
42.67
-0.65
-0.46
CJ
45.0
44.0
45.0
0.58
0.118
44.67
0.05
0.23
CM
CO
cs
46.0
46.0
45.0
0.58
0.118
45.67
. 0.39
0.58
cx
50.0
41.0
44.0
4.58
1.120
45.00
0.16
0.35
D
45.0
43.0
44.0
1.00
0.236
44.00
-0.19
0.00
DD
41.0
40.0
42.0
1.00
0.236
41.00
-1.22
-1.04
DE
43.0
44.0
45.0
1.00
0.236
44.00
-0.19
0.00
DH
44.0
45.0
44.0
0.58
0.118
44.33
-0.07
0.12
DO
51.0
52.0
48.0
2.08
0.473
50.33
2.01
2.19
DR
43.0
44.0
43.0
0.58
0.118
43.33
-0.42
-0.23
DT
45.0
44.0
45.0
0.58
0.118
44.67
0.05
0.23
DZ
E
43.0
43.0
43.0
0.00
0.000
43.00
-0.53
-0.35
EA
43.0
42.0
42.0
0.58
0.118
42.33
-0.76
-0.58
EB
41.0
41.0
41.0
0.00
0.000
41.00
-1.22
-1.04
EL
44.0
44.0
43.0
0.58
0.118
43.67
-0.30
-0.12
3
No data submitted
TAG SYMBOLS
ft = Above control limit
(0S
Insufficient data
X 3
Determined to be an outlier
JJ- 2 Below control limit
JJ
-------
/?
CRD-LV Performance Evaluation: Gamma in Water,
8-Nov-1996
^
5/37
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tog
EW
EX
42.0
48.0
44.0
3.06
0.709
44.67
0.05
0.23
FE
43.0
45.0
48.0
2.52
0.591
45.33
0.28
0.46
FJ
42.0
45.0
43.0
1.53
0.354
43.33
-0.42
-0.23
FL
46.0
43.0
44.0
1.53
0.354
44.33
-0.07
0.12
FZ
41.0
45.0
43.0
2.00
0.473
43.00
-0.53
-0.35
GI
44.0
43.0
45.0
1.00
0.236
44.00
-0.19
0.00
GL
44.0
44.0
41.0
1.73
0.354
43.00
-0.53
-0.35
GQ
44.0
45.0
44.0
0.58
0.118
44.33
-0.07
0.12
HI
46.0
50.0
51.0
3.21
0.709
48.67
1.43
1.62
HK
45.0
45.0
45.0
0.00
0.000
45.00
0.16
0.35
HL
26.0
25.0
24.0
1.00
0.236
25.00
-6.77
-6.58
X
HP
47.0
44.0
48.0
2.08
0.473
46.33
0.62
0.81
HX
45.0
44.0
41.0
2.08
0.473
43.33
-0.42
-0.23
I
44.0
43.0
45.0
1.00
0.236
44.00
-0.19
0.00
IU
J
44.0
44.0
44.0
0.00
0.000
44.00
-0.19
0.00
U
JE
44.0
45.0
45.0
0.58
0.118
44.67
0.05
0.23
JG
38.0
39.0
41.0
1.53
0.354
39.33
-1.80
-1.62
JM
45.0
45.0
46.0
0.58
0.118
45.33
0.28
0.46
JS
45.0
44.0
46.0
1.00
0.236
45.00
0.16
0.35
JY
55.0
44.0
51.0
5.57
1.570
50.00
1.89
2.08
K
38.0
40.0
42.0
2.00
0.473
40.00
-1.57
-1.39
KH
46.0
47.0
44.0
1.53
0.354
45.67
0.39
0.58
KL
44.0
45.0
46.0
1.00
0.236
45.00
0.16
0.35
KX
43.0
46.0
43.0
1.73
0.354
44.00
-0.19
0.00
L
44.0
44.0
43.0
0.58
0.118
43.67
-0.30
-0.12
LE
45.0
47.0
49.0
2.00
0.473
47.00
0.85
1.04
LF
46.0
45.0
46.0
0.58
0.118
45.67
0.39
0.58
LR
47.0
46.0
42.0
2.65
0.591
45.00
0.16
0.35
LT
41.0
44.0
41.0
1.73
0.354
42.00
-0.88
-0.69
M
41.0
43.0
42.0
1.00
0.236
42.00
-0.88
-0.69
MP
44.0
41.0
43.0
1.53
0.354
42.67
-0.65
-0.46
MV
46.0
42.0
44.0
2.00
0.473
44.00
-0.19
0.00
MX
44.0
47.0
44.0
1.73
0.354
45.00
0.16
0.35
N
44.0
44.0
45.0
0.58
0.118
44.33
-0.07
0.12
NH
NJ
43.0
46.0
41.0
2.52
0.591
43.33
-0.42
-0.23
NK
38.0
41.0
43.0
2.52
0.591
40.67
-1.34
-1.15
NO
O
49.0
49.0
48.0
0.58
0.118
48.67
1.43
1.62
OA
340.0
350.0
350.0
5.77
1.345
346.67
104.66
104.85
X
OB
43.0
43.0
44.0
0.58
0.118
43.33
-0.42
-0.23
OK
OM
39.0
35.0
36.0
2.08
0.473
36.67
-2.73
-2.54
EI
No data submitted
TAG SYMBOLS
It = Above control limit
III
-------
6/37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
OT
P
46.0
42.0
44.0
2.00
0.473
44.00
-0.19
0.00
PB
45.0
46.0
45.0
0.58
0.118
45.33
0.28
0.46
PE
48.0
46.0
50.0
2.00
0.473
48.00
1.20
1.39
PM
50.0
44.0
42.0
4.16
0.945
45.33
0.28
0.46
PQ
PU
50.0
50.0
50.0
0.00
0.000
50.00
1.89
2.08
PV
50.0
41.0
49.0
4.93
1.120
46.67
0.74
0.92
PW
43.0
45.0
45.0
1.15
0.236
44.33
-0.07
0.12
PX
43.0
42.0
42.0
0.58
0.118
42.33
-0.76
-0.58
Q
42.0
43.0
44.0
1.00
0.236
43.00
-0.53
-0.35
QM
37.0
45.0
42.0
4.04
0.945
41.33
-1.11
-0.92
QP
42.0
40.0
43.0
1.53
0.354
41.67
-0.99
-0.81
QT
43.0
41.0
42.0
1.00
0.236
42.00
-0.88
-0.69
QU
43.0
42.0
45.0
1.53
0.354
43.33
-0.42
-0.23
QW
44.0
41.0
45.0
2.08
0.473
43.33
-0.42
-0.23
QX
52.0
50.0
51.0
1.00
0.236
51.00
2.24
2.42
QZ
42.0
42.0
46.0
2.31
0.473
43.33
-0.42
-0.23
R
45.0
44.0
45.0
0.58
0.118
44.67
0.05
0.23
RF
44.0
41.0
40.0
2.08
0.473
41.67
-0.99
-0.81
RH
RK
RO
44.0
46.0
45.0
1.00
0.236
45.00
0.16
0.35
RR
40.0
44.0
45.0
2.65
0.591
43.00
-0.53
-0.35
RU
41.0
42.0
41.0
0.58
0.118
41.33
-1.11
-0.92
RX
50.0
46.0
48.0
2.00
0.473
48.00
1.20
1.39
RZ
S
42.0
42.0
41.0
0.58
0.118
41.67
-0.99
-0.81
sc
43.0
43.0
41.0
1.15
0.236
42.33
-0.76
-0.58
SD
46.0
46.0
46.0
0.00
0.000
46.00
0.51
0.69
SF
44.0
43.0
44.0
0.58
0.118
43.67
-0.30
-0.12
SI
46.0
42.0
42.0
2.31
0.473
43.33
-0.42
-0.23
SM
46.0
45.0
46.0
0.58
0.118
45.67
0.39
0.58
SN
40.0
40.0
41.0
0.58
0.118
40.33
-1.46
-1.27
SR
49.0
45.0
45.0
2.31
0.473
46.33
0.62
0.81
ss
46.0
48.0
43.0
2.52
0.591
45.67
0.39
0.58
sv
47.0
46.0
46.0
0.58
0.118
46.33
0.62
0.81
sx
42.0
40.0
44.0
2.00
0.473
42.00
-0.88
-0.69
sz
43.0
43.0
43.0
0.00
0.000
43.00
-0.53
-0.35
T
40.0
47.0
47.0
4.04
0.827
44.67
0.05
0.23
TC
50.0
53.0
52.0
1.53
0.354
51.67
2.47
2.66
TD
49.0
48.0
45.0
2.08
0.473
47.33
0.97
1.15
TH
TL
TO
70.0
66.0
66.0
2.65
0.591
67.00
7.78
7.97 x
S
l 0 3
No data submitted
Insufficient data
X 3
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
ฆU 3 Below control limit
-------
6 ฆ ^
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 7/37
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TQ
43.0
42.0
43.0
0.58
0.118
42.67
-0.65
-0.46
TR
58.0
68.0
64.0
5.03
1.345
63.33
6.61
6,70 x
TS
46.0
54.0
52.0
4.16
0.945
50.67
2.12
2.31
U
44.0
44.0
43.0
0.58
0.118
43.67
-0.30
-0.12
UE
43.0
43.0
44.0
0.58
0.118
43.33
-0.42
-0.23
UN
UP
47.0
47.0
46.0
0.58
0.118
46.67
0.74
0.92
UR
I3T
UV
51.0
45.0
46.0
3.21
0.709
47.33
0.97
1.15
UX
42.0
41.0
41.0
0.58
0.118
41.33
-1.11
-0.92
VA
49.0
44.0
47.0
2.52
0.591
46.67
0.74
0.92
VC
49.0
44.0
40.0
4.51
1.120
44.33
-0.07
0.12
VE
49.0
49.0
46.0
1.73
0.354
48.00
1.20
1.39
VH
47.0
42.0
50.0
4.04
0.945
46.33
0.62
0.81
VI
45.0
46.0
46.0
0.58
0.118
45.67
0.39
0.58
VM
44.0
40.0
44.0
2.31
0.473
42.67
-0.65
-0.46
VO
48.0
45.0
43.0
2.52
0.591
45.33
0.28
0.46
vs
48.0
48.0
49.0
0.58
0.118
48.33
1.32
1.50
w
41.0
43.0
38.0
2.52
0.591
40.67
-1.34
-1.15
WD
46.0
44.0
47.0
1.53
0.354
45.67
0.39
0.58
WI
49.0
62.0
42.0
10.15
3.596
51.00
2.24
2.42
WJ
46.0
43.0
40.0
3.00
0.709
43.00
-0.53
-0.35
WK
42.0
42.0
42.0
0.00
0.000
42.00
-0.88
-0.69
WO
35.0
36.0
39.0
2.08
0.473
36.67
-2.73
-2.54
WR
41.0
42.0
44.0
1.53
0.354
42.33
-0.76
-0.58
WS
45.0
47.0
44.0
1.53
0.354
45.33
0.28
0.46
WV
44.0
44.0
42.0
1.15
0.236
43.33
-0.42
-0.23
WW
43.0
42.0
39.0
2.08
0.473
41.33
-1.11
-0.92
wx
52.0
55.0
53.0
1.53
0.354
53.33
3.05
3.23 fl
WY
X
51.0
53.0
52.0
1.00
0.236
52.00
2.59
2.77
XA
53.0
50.0
52.0
1.53
0.354
51.67
2.47
2.66
XB
i
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag Lab
25.00
X
HL
40.67
w
41.67
S
36.67
wo
40.67
NK
41.67
RF
36.67
OM
41.00
EB
41.67
QP
39.33
JG
41.00
DD
41.67
BC
40.00
K
41.33
WW
42.00
WK
40.00
AY
41.33
UX
42.00
sx
40.00
AI
41.33
RU
42.00
QT
40.33
SN
*1.33
QM
42.00
M
s No data submitted
TAG SYMBOLS
IT
= Above control limit
0 = Insufficient data x s Determined to be an outlier JJ- s Below control limit J
V' y
-------
8/37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
42.00
LT
44.00
IU
45.67
SS
42.33
WR
44.00
I
45.67
SM
42.33
SC
44.00
GI
45.67
LF
42.33
PX
44.00
DE
45.67
KH
42.33
EA
44.00
D
45.67
CS
42.33
BM
44.33
VC
46.00
SD
42.33
AU
44.33
PW
46.00
C
42.67
VM
44.33
N
46.00
BB
42.67
TQ
44.33
GQ
46.33
VH
42.67
MP
44.33
FL
46.33
SV
42.67
CE
44.33
DH
46.33
SR
42.67
AH
44.33
BO
46.33
HP
42.67
A
44.33
AJ
46.33
AE
43.00
WJ
44.67
T
46.67
VA
43.00
sz
44.67
R
46.67
UP
43.00
RE
44.67
eJE
46.67
PV
43.00
Q
44.67
EX
47.00
LE
43.00
GL
44.67
DT
47.33
UV
43.00
FZ
44.67
CJ
47.33
TD
43.00
E
45.00
RO
47.33
BH
43.33
WV
45.00
MX
48.00
VE
43.33
UE
45.00
LR
48.00
RX
43.33
SI
45.00
KL
48.00
PE
43.33
QZ
45.00
JS
48.33
VS
43.33
QW
45.00
HK
48.67
o
43.33
QU
45.00
CX
48.67
HI
43.33
OB
45.00
BK
49.67
BA
43.33
NJ
45.00
AZ
50.00
PU
43.33
HX
45.00
AW
50.00
JY
43.33
FJ
45.00
AK
50.00
CC
43.33
DR
45.33
ws
50.33
DO
43.33
AL
45.33
VO
50.67
TS
43.67
U
45.33
PM
51.00
WI
43.67
SF
45.33
PB
51.00
QX
43.67
L
45.33
JM
51.67
XA
43.67
EL
45.33
FE
51.67
TC
43.67
BL
45.33
CA
52.00
X
44.00
P
45.33
AF
53.33
WX
44.00
MV
45.67
WD
63.33
X
TR
44.00
KX
45.67
VI
67.00
346.67
X
X
TO
OA
s No data submitted
TAG SYMBOLS
tr
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
Ji
= Below control limit
^ ^
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
9/37
Cobalt-60
% responding labs
Frequency distribution
10-
-Hill
l|lll , ฆ
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
+6
% responding labs
Frequency distribution
10-
i i i1
llllflll.
T" ฆT"-~
ฆ6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 10/37
=:
Zinc-65 Statistical Summary 169 Participants
The known value of this nuclide is 35.0 pCi/1 with an expected precision of 5.0; the control limits
are 26.3 to 43.7; the warning regions are 26.3 to 29.2 and 40.8 to 43.7
25(14.8 %) Failed to respond
3(1.8 %) Outliers
10(5.9 %) Out of control
but not an outlier
11(6.5 %) In warning zone
but within control
Statistic Respondents Non-outliers
Mean
37.85
Grand Avg 36.08
Std. Dev.
18.99
4.45
Variance
360.67
19.78
% Coef. of Var.
50.17
12.33
% deviation of mean from known value
8.15
3.09
Norm. dev. of mean from known value
0.15
0.24
Median
36.17
36.00
% deviation of median from known value
3.33
2.86
Norm. dev. of median from known value
0.06
0.22
81(56.3 %) Within 1 norm. S.D.
of known value
13(9.0 %) More than 3 norm. S.D.
39(27.1 %) Between 1 and 2 norm. S.D.
-------
11/37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
'
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
ฆ>
"N
Normalized deviation
(grand-avg) (known) Tag
A
34.0
33.0
36.0
1.53
0.354
34.33
-0.61
-0.23
AE
36.0
37.0
36.0
0.58
0.118
36.33
0.09
0.46
AF
34.0
28.0
37.0
4.58
1.120
33.00
-1.07
-0.69
AH
34.0
34.0
37.0
1.73
0.354
35.00
-0.37
0.00
AI
36.0
36.0
36.0
0.00
0.000
36.00
-0.03
0.35
AJ
36.0
38.0
35.0
1.53
0.354
36.33
0.09
0.46
AK
38.0
38.0
35.0
1.73
0.354
37.00
0.32
0.69
AL
46.0
56.0
62.0
8-08
2.695
54.67
6.44
6.81
X
AP
AU
38.0
38.0
33.0
2.89
0.591
36.33
0.09
0.46
AW
35.0
36.0
33.0
1.53
0.354
34.67
-0.49
-0.12
AY
32.0
31.0
33.0
1.00
0.236
32.00
-1.41
-1.04
AZ
37.0
38.0
37.0
0.58
0.118
37.33
0.43
0.81
BA
28.0
33.0
34.0
3.21
0.709
31.67
-1.53
-1.15
BB
38.0
40.0
34.0
3.06
0.709
37.33
0.43
0.81
BC
36.0
39.0
39.0
1.73
0.354
38.00
0.66
1.04
BG
BH
37.0
39.0
38.0
1.00
0.236
38.00
0.66
1.04
BK
38.0
40.0
38.0
1.15
0.236
38.67
0.90
1.27
BL
34.0
35.0
33.0
1.00
0.236
34.00
-0.72
-0.35
BM
39.0
36.0
39.0
1.73
0.354
38.00
0.66
1.04
BN
BO
35.0
37.0
36.0
1.00
0.236
36.00
-0.03
0.35
BW
C
34.0
35.0
35.0
0.58
0.118
34.67
-0.49
-0.12
CA
35.0
40.0
36.0
2.65
0.591
37.00
0.32
0.69
CC
36.0
36.0
37.0
0.58
0.118
36.33
0.09
0.46
CE
37.0
37.0
33.0
2.31
0.473
35.67
-0.14
0.23
CJ
39.0
38.0
39.0
0.58
0.118
38.67
0.90
1.27
CM
CO
CS
39.0
37.0
39.0
1.15
0.236
38.33
0.78
1.15
CX
39.0
37.0
35.0
2.00
0.473
37.00
0.32
0.69
D
33.0
42.0
38.0
4.51
1.120
37.67
0.55
0.92
DD
32.0
38.0
36.0
3.06
0.709
35.33
-0.26
0.12
DE
34.0
34.0
35.0
0.58
0.118
34.33
-0.61
-0.23
DH
34.0
35.0
35.0
0.58
0.118
34.67
-0.49
-0.12
DO
32.0
44.0
28.0
8.33
2.695
34.67
-0.49
-0.12
DR
37.0
44.0
40.0
3.51
0.827
40.33
1.47
1.85
DT
37.0
33.0
33.0
2.31
0.473
34.33
-0.61
-0.23
DZ
E
37.0
37.0
37.0
0.00
0.000
37.00
0.32
0.69
EA
31.0
30.0
32.0
1.00
0.236
31.00
-1.76
-1.39
EB
36.0
37.0
36.0
0.58
0.118
36.33
0.09
0.46
EL
33.0
36.0
35.0
1.53
0.354
34.67
-0.49
-0.12
= No data submitted
0 s Insufficient data
vs
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
11 = Below control limit
'J
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 12 / 37
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EW
EX
30.0
27.0
36.0
4.58
1.120
31.00
-1.76
-1.39
FE
31.0
32.0
35.0
2.08
0.473
32.67
-1.18
-0.81
FJ
39.0
35.0
30.0
4.51
1.120
34.67
-0.49
-0.12
FL
42.0
37.0
40.0
2.52
0.591
39.67
1.24
1.62
FZ
32.0
37.0
31.0
3.21
0.709
33.33
-0.95
-0.58
GI
37.0
37.0
34.0
1.73
0.354
36.00
-0.03
0.35
GL
38.0
44.0
36.0
4.16
0.945
39.33
1.13
1.50
GQ
40.0
39.0
40.0
0.58
0.118
39.67
1.24
1.62
m
40.0
44.0
37.0
3.51
0.827
40.33
1.47
1.85
HK
35.0
36.0
36.0
0.58
0.118
35.67
-0.14
0.23
HL
26.0
20.0
21.0
3.21
0.709
22.33
-4.76
-4.39
HP
39.0
43.0
42.0
2.08
0.473
41.33
1.82
2.19
HX
33.0
36.0
34.0
1.53
0.354
34.33
-0.61
-0.23
I
31.0
33.0
35.0
2.00
0.473
33.00
-1.07
-0.69
IU
.T
39.0
37.0
40.0
1.53
0.354
38.67
0.90
1.27
JE
37.0
37.0
39.0
1.15
0.236
37.67
0.55
0.92
JG
30.0
33.0
36.0
3.00
0.709
33.00
-1.07
-0.69
JM
38.0
39.0
35.0
2.08
0.473
37.33
0.43
0.81
JS
40.0
38.0
41.0
1.53
0.354
39.67
1.24
1.62
JY
49.0
37.0
60.0
11.50
4.271
48.67
4.36
4.73 It
K
33.0
32.0
32.0
0.58
0.118
32.33
-1.30
-0.92
KH
33.0
34.0
33.0
0.58
0.118
33.33
-0.95
-0.58
KL
33.0
40.0
30.0
5.13
1.345
34.33
-0.61
-0.23
KX
39.0
37.0
36.0
1.53
0.354
37.33
0.43
0.81
L
32.0
33.0
36.0
2.08
0.473
33.67
-0.84
-0.46
LE
41.0
53.0
42.0
6.66
1.795
45.33
3.21
3.58 It
LF
40.0
37.0
36.0
2.08
0.473
37.67
0.55
0.92
LR
63.0
43.0
35.0
14.42
5.396
47.00
3.78
4.16 IT
LT
35.0
42.0
35.0
4.04
0.827
37.33
0.43
0.81
M
35.0
36.0
36.0
0.58
0.118
35.67
-0.14
0.23
MP
35.0
36.0
31.0
2.65
0.591
34.00
-0.72
-0.35
MV
23.0
22.0
23.0
0.58
0.118
22.67
-4.65
-4.27 W
MX
34.0
34.0
33.0
0.58
0.118
33.67
-0.84
-0.46
N
39.0
40.0
37.0
1.53
0.354
38.67
0.90
1.27
NH
NJ
38.0
30.0
40.0
5.29
1.345
36.00
-0.03
0.35
NK
35.0
29.0
28.0
3.79
0.827
30.67
-1.88
-1.50
NO
O
41.0
41.0
40.0
0.58
0.118
40.67
1.59
1.96
OA
270.0
220.0
280.0
32.15
12.596
256.67
76.41
76.79 x
OB
OK
OM
41.0
39.0
42.0
1.53
0.354
40.67
1.59
1.96
= No data submitted TAG SYMBOLS ft s Above control limit
0 s Insufficient data x = Determined to be an outlier U = Below control limit
^ ฆฆฆ -y
-------
13 / 37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
OT
P
39.0
32.0
32.0
4.04
0.827
34.33
-0.61
-0.23
PB
32.0
33.0
34.0
1.00
0.236
33.00
-1.07
-0.69
PE
26.0
35.0
28.0
4.73
1.120
29.67
-2.22
-1.85
PM
40.0
35.0
35.0
2.89
0.591
36.67
0.20
0.58
PQ
PU
36.0
41.0
39.0
2.52
0.591
38.67
0.90
1.27
PV
46.0
40.0
39.0
3.79
0.827
41.67
1.94
2.31
PW
36.0
40.0
38.0
2.00
0.473
38.00
0.66
1.04
PX
34.0
31.0
32.0
1.53
0.354
32.33
-1.30
-0.92
Q
35.0
35.0
36.0
0.58
0.118
35.33
-0.26
0.12
QM
27.0
31.0
33.0
3.06
0.709
30.33
-1.99
-1.62
QP
29.0
28.0
31.0
1.53
0.354
29.33
-2.34
-1.96
QT
21.0
36.0
38.0
9.29
2.921
31.67
-1.53
-1.15
QU
30.0
29.0
23.0
3.79
0.827
27.33
-3.03
-2.66
QW
31.0
27.0
24.0
3.51
0.827
27.33
-3.03
-2.66
QX
38.0
31.0
36.0
3.61
0.827
35.00
-0.37
0.00
QZ
37.0
35.0
38.0
1.53
0.354
36.67
0.20
0.58
R
37.0
36.0
39.0
1.53
0.354
37.33
0.43
0.81
RF
36.0
33.0
35.0
1.53
0.354
34.67
-0.49
-0.12
RH
RK
RO
39.0
37.0
39.0
1.15
0.236
38.33
0.78
1.15
RR
40.0
45.0
39.0
3.21
0.709
41.33
1.82
2.19
RU
38.0
31.0
35.0
3.51
0.827
34.67
-0.49
-0.12
RX
40.0
35.0
33.0
3.61
0.827
36.00
-0.03
0.35
RZ
9
S
30.0
31.0
31.0
0.58
0.118
30.67
-1.88
-1.50
sc
39.0
32.0
36.0
3.51
0.827
35.67
-0.14
0.23
SD
34.0
34.0
52.0
10.39
3.146
40.00
1.36
1.73
SF
38.0
41.0
32.0
4.58
1.120
37.00
0.32
0.69
SI
34.0
38.0
36.0
2.00
0.473
36.00
. -0.03
0.35
SM
39.0
42.0
37.0
2.52
0.591
39.33
1.13
1.50
SN
35.0
30.0
32.0
2.52
0.591
32.33
-1.30
-0.92
SR
41.0
42.0
32.0
5.51
1.345
38.33
0.78
1.15
ss
42.0
37.0
37.0
2.89
0.591
38.67
0.90
1.27
sv
41.0
30.0
42.0
6.66
1.795
37.67
0.55
0.92
sx
36.0
39.0
30.0
4.58
1.120
35.00
-0.37
0.00
sz
37.0
33.0
38.0
2.65
0.591
36.00
-0.03
0.35
T
34.0
37.0
38.0
2.08
0.473
36.33
0.09
0.46
TC
49.0
41.0
48.0
4.36
0.945
46.00
3.44
3.81
n
TD
27.0
19.0
18.0
4.93
1.120
21.33
-5.11
-4.73
u
TH
TL
TO
49.0
46.0
43.0
3.00
0.709
46.00
3.44
3.81
ir
ซ =
[0,
No data submitted
Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
fl = Above control limit
H s Below control limit
V
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
14/37
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Avprage
Normalized deviation
(grand-nvg) (known) Tag
TQ
37.0
31.0
34.0
3.00
0.709
34.00
-0.72
-0.35
TB
41.0
62.0
53.0
10.54
3.821
52.00
5.51
5.89 x
TS
44.0
41.0
45.0
2.08
0.473
43.33
2.51
2.89
U
36.0
36.0
35.0
0.58
0.118
35.67
-0.14
0.23
UE
30.0
34.0
33.0
2.08
0.473
32.33
-1.30
-0.92
UN
UP
40.0
41.0
39.0
1.00
0.236
40.00
1.36
1.73
UK
UT
UV
28.0
31.0
42.0
7.37
2.245
33.67
-0.84
-0.46
UX
34.0
36.0
36.0
1.15
0.236
35.33
-0.26
0.12
VA
46.0
39.0
34.0
6.03
1.795
39.67
1.24
1.62
VC
41.0
43.0
42.0
1.00
0.236
42.00
2.05
2.42
VE
37.0
39.0
42.0
2.52
0.591
39.33
1.13
1.50
VH
40.0
44.0
45.0
2.65
0.591
43.00
2.40
2.77
VI
30.0
41.0
38.0
5.69
1.570
36.33
0.09
0.46
VM
35.0
35.0
35.0
0.00
0.000
35.00
-0.37
0.00
VO
41.0
40.0
39.0
1.00
0.236
40.00
1.36
1.73
VS
39.0
37.0
31.0
4.16
0.945
35.67
-0.14
0.23
W
22.0
30.0
31.0
4.93
1.120
27.67
-2.91
-2.54
WD
33.0
37.0
31.0
3.06
0.709
33.67
-0.84
-0.46
WI
38.0
58.0
31.0
14.01
5.171
42.33
2.17
2.54
WJ
34.0
41.0
36.0
3.61
0.827
37.00
0.32
0.69
WK
32.0
33.0
33.0
0.58
0.118
32.67
-1.18
-0.81
WO
22.0
25.0
23.0
1.53
0.354
23.33
-4.42
-4.04 U
WR
31.0
32.0
38.0
3.79
0.827
33.67
-0.84
-0.46
WS
39.0
34.0
36.0
2.52
0.591
36.33
0.09
0.46
WV
42.0
39.0
41.0
1.53
0.354
40.67
1.59
1.96
WW
38.0
33.0
30.0
4.04
0.945
33.67
-0.84
-0.46
WX
43.0
43.0
43.0
0.00
0.000
43.00
2.40
2.77
WY
X
34.0
46.0
38.0
6.11
1.795
39.33
1.13
1.50
XA
46.0
45.0
45.0
0.58
0.118
45.33
3.21
3.58 ft
XB
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag Lab
21.33
li
TD
29.67
PE
32.00
AY
22.33
U
HL
30.33
QM
32.33
UE
22.67
U
MV
30.67
S
32.33
SN
23.33
WO
30.67
NK
32.33
PX
27.33
QW
31.00
EX
32.33
K
27.33
QU
31.00
EA
32.67
WK
27.67
W
31.67
QT
32.67
FE
29.33
QP
31.67
BA
33.00
PB
= No data submitted
TAG SYMBOLS
It
= Above control limit
0 = Insufficient data
x s Determined to be an outlier
= Below control limit
-------
15 / 37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
I
r" '
Zinc-65
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
33.00
JG
35.67
CE
38.33
CS
33.00
I
36.00
SZ
38.67
SS
33.00
AF
36.00
SI
38.67
PU
33.33
KH
36.00
RX
38.67
N
33.33
FZ
36.00
NJ
38.67
IU
33.67
WW
36.00
GI
38.67
CJ
33.67
WR
36.00
BO
38.67
BK
33.67
WD
36.00
AI
39.33
X
33.67
UV
36.33
WS
39.33
VE
33.67
MX
36.33
VI
39.33
SM
33.67
L
36.33
T
39.33
GL
34.00
TQ
36.33
EB
39.67
VA
34.00
MP
36.33
CC
39.67
JS
34.00
BL
36.33
AU
39.67
GQ
34.33
P
36.33
AJ
39.67
FL
34.33
KL
36.33
AE
40.00
VO
34.33
HX
36.67
QZ
40.00
UP
34.33
DT
36.67
PM
40.00
SD
34.33
DE
37.00
WJ
40.33
HI
34.33
A
37.00
SF
40.33
DR
34.67
RU
37.00
E
40.67
WV
34.67
RF
37.00
CX
40.67
OM
34.67
FJ
37.00
CA
40.67
O
34.67
EL
37.00
AK
41.33
RR
34.67
DO
37.33
R
41.33
HP
34.67
DH
37.33
LT
41.67
PV
34.67
C
37.33
KX
42.00
VC
34.67
AW
37.33
JM
42.33
WI
35.00
VM
37.33
BB
43.00
WX
35.00
sx
37.33
AZ
43.00
VH
35.00
QX
37.67
sv
43.33
TS
35.00
AH
37.67
LF
45.33
ft
XA
35.33
UX
37.67
JE
45.33
ft
LE
35.33
Q
37.67
D
46.00
ft
TO
35.33
DD
38.00
PW
46.00
ft
TC
35.67
vs
38.00
BM
47.00
ft
LR
35.67
u
38.00
BH
48.67
ft
JY
35.67
sc
38.00
BC
52.00
X
TR
35.67
M
38.33
SR
54.67
X
AL
35.67
HX
38.33
RO
256.67
X
OA
s No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x = Determined to be an outlier = Below control limit
V ฆ
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
16/37
Zinc-65
% responding labs Frequency distribution
10-
-f-ilfilllifl liT.
0 +2
-Mr-
*6 -4 "2 0 +2 +4 +6
Normalized deviation of the mean from the known value
responding labs Frequency distribution
10*
ฆ- if lilll-lll l.-T .
I I I T
-4 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
({
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 17 / 37
Cesium-134 Statistical Summary 169 Participants
The known value of this nuclide is 11.0 pCi/1 with an expected precision of 5.0; the control limits
are 2.3 to 19.7; the warning regions are 2.3 to 5.2 and 16.8 to 19.7
25(14.8 %) Failed to respond
2(1.2 %) Outliers '
\,
. 141 (83.4 %) Within all limits
1 (0.6 %) In warning zone
but within control
Statistic
Respondents
Non-outliers
Mean
11.70
Grand Avg 10.62
Std. Dev.
9.42
1.55
Variance
88.65
2.40
% Coef. of Var.
80.47
14.58
% deviation of mean from known value
6.38
-3.41
Norm. dev. of mean from known value
0.07
-0.24
Median
10.67
10.67
% deviation of median from known value
-3.03
-3.03
Norm. dev. of median from known value
-0.04
-0.22
2(1.4 %)
1 norm. S.D.
known value
r
1(0.7 %)
2 norm. S.D.
More than 3 norm. S.D.
132(91.7 %) Within
of
Between 2 and 3 norm. S.D.
'
9(6.3 %) Between 1 and
-------
18 I 37
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1998
Cesium-134
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known
A
11.0
12.0
10.0
1.00
0.236
11.00
0.13
0.00
AE
10.0
11.0
12.0
1.00
0.236
11.00
0.13
0.00
AF
9.0
8.0
11.0
1.53
0.354
9.33
-0.45
-0.58
AH
10.0
10.0
10.0
0.00
0.000
10.00
-0.22
-0.35
AI
9.0
10.0
10.0
0.58
0.118
9.67
-0.33
-0.46
AJ
9.0
9.0
9.0
0.00
0.000
9.00
-0.56
-0.69
AK
12.0
11.0
11.0
0.58
0.118
11.33
0.25
0.12
AL
12.0
10.0
12.0
1.15
0.236
11.33
0.25
0.12
AP
AU
11.0
9.0
9.0
1.15
0.236
9.67
-0.33
-0.46
AW
12.0
12.0
11.0
0.58
0.118
11.67
0.36
0.23
AY
10.0
10.0
10.0
0.00
0.000
10.00
-0.22
-0.35
AZ
11.0
11.0
10.0
0.58
0.118
10.67
0.01
-0.12
BA
10.0
11.0
11.0
0.58
0.118
10.67
0.01
-0.12
BB
13.0
10.0
12.0
1.53
0.354
11.67
0.36
0.23
BC
13.0
13.0
12.0
0.58
0.118
12.67
0.71
0.58
BG
BH
11.0
11.0
10.0
0.58
0.118
10.67
0.01
-0.12
BK
10.0
10.0
9.0
0.58
0.118
9.67
-0.33
-0.46
BL
10.0
11.0
11.0
0.58
0.118
10.67
0.01
-0.12
BM
13.0
10.0
11.0
1.53
0.354
11.33
0.25
0.12
BN
BO
12.0
12.0
11.0
0.58
0.118
11.67
0.36
0.23
BW
C
11.0
11.0
11.0
0.00
0.000
11.00
0.13
0.00
CA
13.0
11.0
11.0
1.15
0.236
11.67
0.36
0.23
CC
10.0
10.0
10.0
0.00
0.000
10.00
-0.22
-0.35
CE
10.0
9.0
11.0
1.00
0.236
10.00
-0.22
-0.35
CJ
12.0
12.0
12.0
0.00
0.000
12.00
0.48
0.35
CM
CO
cs
10.0
9.0
9.0
0.58
0.118
9.33
-0.45
-0.58
cx
16.0
8.0
10.0
4.16
0.945
11.33
0.25
0.12
D
12.0
13.0
13.0
0.58
0.118
12.67
0.71
0.58
DD
11.0
12.0
14.0
1.53
0.354
12.33
0.59
0.46
DE
11.0
11.0
11.0
0.00
0.000
11.00
0.13
0.00
DH
10.0
11.0
11.0
0.58
0.118
10.67
0.01
-0.12
DO
17.0
22.0
12.0
5.00
1.345
17.00
2.21
2.08
DR
9.0
10.0
14.0
2.65
0.591
11.00
0.13
0.00
DT
11.0
9.0
8.0
1.53
0.354
9.33
-0.45
-0.58
DZ
E
10.0
10.0
11.0
0.58
0.118
10.33
-0.10
-0.23
EA
11.0
11.0
12.0
0.58
0.118
11.33
0.25
0.12
EB
9.0
9.0
9.0
0.00
0.000
9.00
-0.56
-0.69
EL
11.0
11.0
11.0
0.00
0.000
11.00
0.13
0.00
= No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft = Above control limit
U = Below control limit j
-------
(?
CRD-LV Performance Evaluation: Gamma in Water,
8-Nov-1996
N
19/37
Cesium-134
\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EW
EX
6.0
9.0
6.0
1.73
0.354
7.00
-1.26
-1.39
FE
11.0
10.0
8.0
1.53
0.354
9.67
-0.33
-0.46
FJ
11.0
13.0
11.0
1.15
0.236
11.67
0.36
0.23
FL
9.0
9.0
11.0
1.15
0.236
9.67
-0.33
-0.46
FZ
11.0
10.0
10.0
0.58
0.118
10.33
-0.10
-0.23
GI
9.0
9.0
10.0
0.58
0.118
9.33
-0.45
-0.58
GL
9.0
9.0
10.0
0.58
0.118
9.33
-0.45
-0.58
GQ
11.0
11.0
10.0
0.58
0.118
10.67
0.01
-0.12
HI
10.0
10.0
13.0
1.73
0.354
11.00
0.13
0.00
HK
10.0
11.0
10.0
0.58
0.118
10.33
-0.10
-0.23
HL
7.0
7.0
6.0
0.58
0.118
6.67
-1.37
-1.50
HP
13.0
12.0
11.0
1.00
0.236
12.00
0.48
0.35
HX
10.0
9.0
9.0
0.58
0.118
9.33
-0.45
-0.58
I
10.0
10.0
9.0
0.58
0.118
9.67
-0.33
-0.46
IU
.T
10.0
12.0
11.0
1.00
0.236
11.00
0.13
0.00
V
JE
11.0
11.0
11.0
0.00
0.000
11.00
0.13
0.00
JG
7.0
8.0
12.0
2.65
0.591
9.00
-0.56
-0.69
JM
11.0
10.0
11.0
0.58
0.118
10.67
0.01
O*
o
1
JS
11.0
12.0
12.0
0.58
0.118
11.67
0.36
0.23
JY
16.0
16.0
10.0
3.46
0.709
14.00
1.17
1.04
K
13.0
12.0
11.0
1.00
0.236
12.00
0.48
0.35
KH
10.0
10.0
10.0
0.00
0.000
10.00
-0.22
-0.35
KL
11.0
11.0
11.0
0.00
0.000
11.00
0.13
0.00
KX
12.0
11.0
10.0
1.00
0.236
11.00
0.13
0.00
L
9.0
11.0
10.0
1.00
0.236
10.00
-0.22
-0.35
LE
9.0
20.0
14.0
5.51
1.570
14.33
1.28
1.15
LF
12.0
12.0
11.0
0.58
0.118
11.67
0.36
0.23
LR
10.0
9.0
11.0
1.00
0.236
10.00
-0.22
-0.35
LT
9.0
9.0
11.0
1.15
0.236
9.67
-0.33
-0.46
M
10.0
9.0
9.0
0.58
0.118
9.33
-0.45
-0.58
MP
11.0
10.0
10.0
0.58
0.118
10.33
-0.10
-0.23
MV
9.0
10.0
9.0
0.58
0.118
9.33
-0.45
-0.58
MX
10.0
10.0
11.0
0.58
0.118
10.33
-0.10
-0.23
N
11.0
10.0
10.0
0.58
0.118
10.33
-0.10
-0.23
NH
NJ
12.0
11.0
10.0
1.00
0.236
11.00
0.13
0.00
NK
9.0
10.0
10.0
0.58
0.118
9.67
-0.33
-0.46
NO
0
12.0
12.0
12.0
0.00
0.000
12.00
0.48
0.35
OA
71.0
71.0
76.0
2.89
0.591
72.67
21.49
21.36 x
OB.
OK
OM
12.0
12.0
11.0
0.58
0.118
11.67
0.36
0.23
=
No data submitted
TAG SYMBOLS
IT = Above control limit
1 0 =
V:
Insufficient data
X =
Determined to be an outlier
s Below control limit
-v
-------
20/37
CRD-LV Performance Evaluation: Gamma
in Water,
8-Nov-1996
f
Cesium-134
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
P
12.0
14.0
13.0
1.00
0.236
13.00
0.82
0.69
PB
10.0
11.0
12.0
1.00
0.236
11.00
0.13
0.00
PE
9.0
7.0
8.0
1.00
0.236
8.00
-0.91
-1.04
PM
10.0
10.0
10.0
0.00
0.000
10.00
-0.22
-0.35
PQ
PU
12.0
12.0
11.0
0.58
0.118
11.67
0.36
0.23
PV
12.0
14.0
13.0
1.00
0.236
13.00
0.82
0.69
PW
10.0
10.0
11.0
0.58
0.118
10.33
-0.10
-0.23
PX
11.0
10.0
11.0
0.58
0.118
10.67
0.01
-0.12
Q
10.0
11.0
10.0
0.58
0.118
10.33
-0.10
-0.23
QM
11.0
5.0
13.0
4.16
0.945
9.67
-0.33
-0.46
QP
10.0
10.0
8.0
1.15
0.236
9.33
-0.45
-0.58
QT
15.0
9.0
9.0
3.46
0.709
11.00
0.13
0.00
QU
5.0
8.0
7.0
1.53
0.354
6.67
-1.37
-1.50
QW
6.0
6.0
8.0
1.15
0.236
6.67
-1.37
-1.50
QX
11.0
11.0
11.0
0.00
0.000
11.00
0.13
0.00
QZ
9.0
10.0
9.0
0.58
0.118
9.33
-0.45
-0.58
R
10.0
11.0
10.0
0.58
0.118
10.33
-0.10
-0.23
RF
10.0
11.0
11.0
0.58
0.118
10.67
0.01
-0.12
RH
RK
RO
9.0
11.0
10.0
1.00
0.236
10.00
-0.22
-0.35
RR
13.0
12.0
11.0
1.00
0.236
12.00
0.48
0.35
RU
9.0
10.0
9.0
0.58
0.118
9.33
-0.45
-0.58
RX
11.0
12.0
12.0
0.58
0.118
11.67
0.36
0.23
RZ
S
9.0
9.0
8.0
0.58
0.118
8.67
-0.68
-0.81
sc
9.0
10.0
9.0
0.58
0.118
9.33
-0.45
-0.58
SD
10.0
14.0
12.0
2.00
0.473
12.00
0.48
0.35
SF
10.0
12.0
8.0
2.00
0.473
10.00
-0.22
-0.35
SI
102.0
103.0
106.0
2.08
0.473
103.67
32.23
32.10
X
SM
12.0
10.0
10.0
1.15
0.236
10.67
0.01
-0.12
SN
11.0
11.0
9.0
1.15
0.236
10.33
-0.10
-0.23
SR
8.0
11.0
12.0
2.08
0.473
10.33
-0.10
-0.23
ss
12.0
12.0
12.0
0.00
0.000
12.00
0.48
0.35
sv
10.0
9.0
9.0
0.58
0.118
9.33
-0.45
-0.58
sx
9.0
11.0
10.0
1.00
0.236
10.00
-0.22
-0.35
sz
10.0
9.0
10.0
0.58
0.118
9.67
-0.33
-0.46
T
10.0
10.0
10.0
0.00
0.000
10.00
-0.22
-0.35
TC
11.0
13.0
11.0
1.15
0.236
11.67
0.36
0.23
TD
11.0
11.0
10.0
0.58
0.118
10.67
0.01
-0.12
TH
TL
TO
15.0
17.0
18.0
1.53
0.354
16.67
2.09
1.96
=
No data submitted
TAG SYMBOLS
IT = Above control limit
0 3
Insufficient data
X -
Determined to be an outlier
= Below control limit
'J- -if
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 21 / 37
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
fgrand-avg) (known)
TQ
10.0
9.0
7.0
1.53
0.354
8.67
-0.68
-0.81
TR
11.0
12.0
12.0
0.58
0.118
11.67
0.36
0.23
TS
15.0
14.0
12.0
1.53
0.354
13.67
1.05
0.92
U
11.0
11.0
10.0
0.58
0.118
10.67
0.01
-0.12
UE
11.0
11.0
11.0
0.00
0.000
11.00
0.13
0.00
UN
UP
9.0
9.0
9.0
0.00
0.000
9.00
-0.56
-0.69
UR
UT
UV
9.0
12.0
8.0
2.08
0.473
9.67
-0.33
-0.46
ux
9.0
10.0
9.0
0.58
0.118
9.33
-0.45
-0.58
VA
13.0
11.0
12.0
1.00
0.236
12.00
0.48
0.35
VC
10.0
12.0
11.0
1.00
0.236
11.00
0.13
0.00
VE
10.0
11.0
11.0
0.58
0.118
10.67
0.01
-0.12
VH
11.0
10.0
12.0
1.00
0.236
11.00
0.13
0.00
VI
11.0
8.0
11.0
1.73
0.354
10.00
-0.22
-0.35
VM
15.0
15.0
15.0
0.00
0.000
15.00
1.52
1.39
VO
11.0
13.0
11.0
1.15
0.236
11.67
0.36
0.23
vs
10.0
11.0
12.0
1.00
0.236
11.00
0.13
0.00
w
11.0
10.0
11.0
0.58
0.118
10.67
0.01
-0.12
WD
10.0
8.0
9.0
1.00
0.236
9.00
-0.56
-0.69
WI
9.0
15.0
13.0
3.06
0.709
12.33
0.59
0.46
WJ
10.0
9.0
9.0
0.58
0.118
9.33
-0.45
-0.58
WK
9.0
10.0
10.0
0.58
0.118
9.67
-0.33
-0.46
WO
17.0
13.0
10.0
3.51
0.827
13.33
0.94
0.81
WR
6.0
8.0
12.0
3.06
0.709
8.67
-0.68
-0.81
WS
9.0
9.0
11.0
1.15
0.236
9.67
-0.33
-0.46
WV
10.0
11.0
11.0
0.58
0.118
10.67
0.01
-0.12
WW
8.0
8.0
9.0
0.58
0.118
8.33
-0.79
-0.92
WX
9.0
11.0
10.0
1.00
0.236
10.00
-0.22
-0.35
WY
X
12.0
10.0
11.0
1.00
0.236
11.00
0.13
0.00
XA
11.0
10.0
11.0
0.58
0.118
10.67
0.01
-0.12
XB
Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
6.67
QW
8.67
S
9.33
SV
6.67
QU
9.00
WD
9.33
SC
6.67
HL
9.00
UP
9.33
RU
7.00
EX
9.00
JG
9.33
QZ
8.00
PE
9.00
EB
9.33
QP
8.33
WW
9.00
AJ
9.33
MV
8.67
WR
9.33
WJ
9.33
M
8.67
TQ
9.33
UX
9.33
HX
= No data submitted
TAG SYMBOLS
ft
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
= Below control limit
-------
22 / 37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
k
f" ' ฆ ฆ ฆ
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.33
GL
10.33
HK
11.33
CX
9.33
GI
10.33
FZ
11.33
BM
9.33
DT
10.33
E
11.33
AL
9.33
CS
10.67
XA
11.33
AK
9.33
AF
10.67
WV
11.67
VO
9.67
WS
10.67
W
11.67
TR
9.67
WK
10.67
VE
11.67
TC
9.67
UV
10.67
U
11.67
RX
9.67
SZ
10.67
TD
11.67
PU
9.67
QM
10.67
SM
11.67
OM
9.67
NK
10.67
RF
11.67
LF
9.67
LT
10.67
PX
11.67
JS
9.67
I
10.67
JM
11.67
FJ
9.67
FL
10.67
GQ
11.67
CA
9.67
FE
10.67
DH
11.67
BO
9.67
BK
10.67
BL
11.67
BB
9.67
AU
10.67
BH
11.67
AW
9.67
AI
10.67
BA
12.00
VA
10.00
WX
10.67
AZ
12.00
ss
10.00
VI
11.00
X
12.00
SD
10.00
T
11.00
VS
12.00
RR
10.00
sx
11.00
VH
12.00
O
10.00
SF
11.00
VC
12.00
K
10.00
RO
11.00
UE
12.00
HP
10.00
PM
11.00
QX
12.00
CJ
10.00
LR
11.00
QT
12.33
WI
10.00
L
11.00
PB
12.33
DD
10.00
KH
11.00
NJ
12.67
D
10.00
CE
11.00
KX
12.67
BC
10.00
CC
11.00
KL
13.00
PV
10.00
AY
11.00
JE
13.00
P
10.00
AH
11.00
IU
13.33
WO
10.33
SR
11.00
HI
13.67
TS
10.33
SN
11.00
EL
14.00
JY
10.33
R
11.00
DR
14.33
LE
10.33
Q
11.00
DE
15.00
VM
10.33
PW
11.00
C
16.67
TO
10.33
N
11.00
AE
17.00
DO
10.33
MX
11.00
A
72.67
X
OA
10.33
MP
11.33
EA
103.67
X
SI
= No data submitted TAG SYMBOLS 1T = Above control limit
0 = Insufficient data x = Determined to be an outlier 11 = Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
Ce8ium-134
% responding labs
Frequency distribution
23/37
20-
10-
T
~r
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
i
+6
% responding labs
Frequency distribution
20-
10-
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
24/37
Cesium-137 Statistical Summary 169 Participants
The known value of this nuclide is 19.0 pCi/1 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
24(14.2 %) Failed to respond ซ,
137(81.1 %) Within all limits
0 \ K
x iv
nJ >.
\ I
\ Pv.
'* 4(2.4 %) In warning zone
4(2.4 %) Outliers '*
r
i i
but within control
Statistic
Respondents
Non-outliers
Mean
21.67
Grand Avg 20.36
Std. Dev.
12.46
1.93
Variance
155.28
3.71
% Coef. of Var.
57.50
9.46
% deviation of mean from known value
14.07
7.14
Norm. dev. of mean from known value
0.21
0.70
Median
20.33
20.33
% deviation of median from known value
7.02
7.02
Norm. dev. of median from known value
0.11
0.69
5(3.4 %) More than 3 norm. S.D.
3(2.1 %) Between 2 and 3 norm. S.D. *
. 115(79.3 %) Within 1 norm. S.D.
of Known value
22(15.2 %) Between 1 and 2 norm. S.D.
-------
ft
^
25/37
CRD-LV Performance Evaluation: Gamma in Water,
8-Nov-1996
f- ฆฆ
Cesium-137
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tng
A
18.0
19.0
19.0
0.58
0.118
18.67
-0.59
-0.12
AE
18.0
20.0
20.0
1.15
0.236
19.33
-0.35
0.12
AT
17.0
22.0
23.0
3.21
0.709
20.67
0.11
0.58
AH
21.0
20.0
20.0
0.58
0.118
20.33
-0.01
0.46
AI
19.0
19.0
21.0
1.15
0.236
19.67
-0.24
0.23
AJ
19.0
20.0
20.0
0.58
0.118
19.67
-0.24
0.23
AK
21.0
21.0
22.0
0.58
0.118
21.33
0.34
0.81
AL
22.0
21.0
21.0
0.58
0.118
21.33
0.34
0.81
AP
AU
21.0
20.0
20.0
0.58
0.118
20.33
-0.01
0.46
AW
20.0
19.0
19.0
0.58
0.118
19.33
-0.35
0.12
AY
16.0
19.0
20.0
2.08
0.473
18.33
-0.70
-0.23
AZ
20.0
21.0
19.0
1.00
0.236
20.00
-0.12
0.35
BA
18.0
18.0
13.0
2.89
0.591
16.33
-1.39
-0.92
BB
22.0
20.0
22.0
1.15
0.236
21.33
0.34
0.81
BC
18.0
20.0
21.0
1.53
0.354
19.67
-0.24
0.23
BG
BH
23.0
22.0
22.0
0.58
0.118
22.33
0.68
1.15
BK
21.0
21.0
20.0
0.58
0.118
20.67
0.11
0.58
BL
20.0
20.0
19.0
0.58
0.118
19.67
-0.24
0.23
BM
17.0
20.0
18.0
1.53
0.354
18.33
-0.70
-0.23
BN
BO
19.0
20.0
20.0
0.58
0.118
19.67
-0.24
0.23
BW
C
19.0
20.0
20.0
0.58
0.118
19.67
-0.24
0.23
CA
17.0
21.0
21.0
2.31
0.473
19.67
-0.24
0.23
CC
21.0
21.0
21.0
0.00
0.000
21.00
0.22
0.69
CE
23.0
19.0
20.0
2.08
0.473
20.67
0.11
0.58
CJ
20.0
20.0
22.0
1.15
0.236
20.67
0.11
0.58
CM
CO
CS
21.0
21.0
22.0
0.58
0.118
21.33
0.34
0.81
CX
23.0
22.0
22.0
0.58
0.118
22.33
0.68
1.15
D
18.0
21.0
20.0
1.53
0.354
19.67
-0.24
0.23
DD
20.0
21.0
18.0
1.53
0.354
19.67
-0.24
0.23
DE
19.0
20.0
20.0
0.58
0.118
19.67
-0.24
0.23
DH
20.0
20.0
21.0
0.58
0.118
20.33
-0.01
0.46
DO
19.0
13.0
22.0
4.58
1.120
18.00
-0.82
-0.35
DR
24.0
24.0
21.0
1.73
0.354
23.00
0.92
1.39
DT
22.0
18.0
18.0
2.31
0.473
19.33
-0.35
0.12
DZ
E
20.0
21.0
18.0
1.53
0.354
19.67
-0.24
0.23
EA
18.0
19.0
20.0
1.00
0.236
19.00
-0.47
0.00
EB
20.0
20.0
20.0
0.00
0.000
20.00
-0.12
0.35
EL
21.0
19.0
20.0
1.00
0.236
20.00
-0.12
0.35
=
No data submitted
TAG SYMBOLS
ft = Above control limit
0 s
v
Insufficient data
X s
Determined to be an outlier
U = Below control limit
->j
-------
(?
CRD-LV Performance Evaluation: Gamma in Water,
8-Nov-1996
^
26/37
j
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
EW
EX
16.0
14.0
13.0
1.53
0.354
14.33
-2.09
-1.62
FE
18.0
24.0
18.0
3.46
0.709
20.00
-0.12
0.35
FJ
17.0
19.0
19.0
1.15
0.236
18.33
-0.70
-0.23
FL
22.0
22.0
19.0
1.73
0.354
21.00
0.22
0.69
FZ
21.0
20.0
20.0
0.58
0.118
20.33
-0.01
0.46
GI
20.0
19.0
20.0
0.58
0.118
19.67
-0.24
0.23
GL
17.0
19.0
18.0
1.00
0.236
18.00
-0.82
-0.35
GQ
20.0
20.0
20.0
0.00
0.000
20.00
-0.12
0.35
HI
19.0
19.0
27.0
4.62
0.945
21.67
0.45
0.92
HK
21.0
20.0
22.0
1.00
0.236
21.00
0.22
0.69
HL
16.0
15.0
17.0
1.00
0.236
16.00
-1.51
-1.04
HP
24.0
23.0
24.0
0.58
0.118
23.67
1.15
1.62
HX
19.0
20.0
19.0
0.58
0.118
19.33
-0.35
0.12
I
22.0
21.0
20.0
1.00
0.236
21.00
0.22
0.69
IU
T
20.0
19.0
19.0
0.58
0.118
19.33
-0.35
0.12
O
JE
21.0
20.0
21.0
0.58
0.118
20.67
0.11
0.58
~
JG
20.0
20.0
21.0
0.58
0.118
20.33
-0.01
0.46
JM
22.0
20.0
22.0
1.15
0.236
21.33
0.34
0.81
JS
20.0
19.0
21.0
1.00
0.236
20.00
-0.12
0.35
JY
27.0
31.0
39.0
6.11
1.795
32.33
4.15
4.62
X
K
23.0
22.0
20.0
1.53
0.354
21.67
0.45
0.92
KH
20.0
21.0
21.0
0.58
0.118
20.67
0.11
0.58
KL
23.0
22.0
19.0
2.08
0.473
21.33
0.34
0.81
KX
22.0
23.0
21.0
1.00
0.236
22.00
0.57
1.04
L
20.0
20.0
20.0
0.00
0.000
20.00
-0.12
0.35
LE
28.0
34.0
21.0
6.51
2.020
27.67
2.53
3.00
LF
20.0
22.0
21.0
1.00
0.236
21.00
0.22
0.69
LR
19.0
22.0
18.0
2.08
0.473
19.67
-0.24
0.23
LT
20.0
18.0
19.0
1.00
0.236
19.00
-0.47
0.00
M
19.0
20.0
21.0
1.00
0.236
20.00
-0.12
0.35
MP
15.0
18.0
16.0
1.53
0.354
16.33
-1.39
-0.92
MV
21.0
25.0
23.0
2.00
0.473
23.00
0.92
1.39
MX
20.0
20.0
20.0
0.00
0.000
20.00
-0.12
0.35
N
20.0
19.0
23.0
2.08
0.473
20.67
0.11
0.58
NH
NJ
16.0
20.0
18.0
2.00
0.473
18.00
-0.82
-0.35
NK
18.0
16.0
17.0
1.00
0.236
17.00
-1.16
-0.69
NO
O
22.0
22.0
22.0
0.00
0.000
22.00
0.57
1.04
OA
162,0
173.0
165.0
5.69
1.570
166.67
50.68
51.15
X
OB
21.0
18.0
21.0
1.73
0.354
20.00
-0.12
0.35
OK
OM
23.0
21.0
21.0
1.15
0.236
21.67
0.45
0.92
=
No data submitted
TAG SYMBOLS
IT = Above control limit
in
Q
V
Insufficient data
X H
Determined to be an outlier
ฆil - Below control limit
JJ
-------
27/37
CRD-LV Performance Evaluation: Gamma
in Water,
8-Nov-1996
Cesium-137
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
P
18.0
16.0
21.0
2.52
0.591
18.33
-0.70
-0.23
PB
20.0
20.0
20.0
0.00
0.000
20.00
-0.12
0.35
PE
26.0
23.0
26.0
1.73
0.354
25.00
1.61
2.08
PM
20.0
21.0
20.0
0.58
0.118
20.33
-0.01
0.46
PQ
PU
24.0
24.0
23.0
0.58
0.118
23.67
1.15
1.62
PV
24.0
23.0
23.0
0.58
0.118
23.33
1.03
1.50
PW
21.0
20.0
22.0
1.00
0.236
21.00
0.22
0.69
PX
18.0
19.0
18.0
0.58
0.118
18.33
-0.70
-0.23
Q
19.0
19.0
18.0
0.58
0.118
18.67
-0.59
-0.12
QM
21.0
24.0
22.0
1.53
0.354
22.33
0.68
1.15
QP
17.0
18.0
18.0
0.58
0.118
17.67
-0.93
-0.46
QT
20.0
20.0
21.0
0.58
0.118
20.33
-0.01
0.46
QU
19.0
18.0
19.0
0.58
0.118
18.67
-0.59
-0.12
QW
18.0
18.0
20.0
1.15
0.236
18.67
-0.59
-0.12
QX
27.0
26.0
26.0
0.58
0.118
26.33
2.07
2.54
QZ
20.0
21.0
20.0
0.58
0.118
20.33
-0.01
0.46
R
22.0
21.0
19.0
1.53
0.354
20.67
0.11
0.58
RF
17.0
18.0
17.0
0.58
0.118
17.33
-1.05
-0.58
RH
RK
RO
20.0
22.0
20.0
1.15
0.236
20.67
0.11
0.58
RR
21.0
21.0
21.0
0.00
0.000
21.00
0.22
0.69
RU
18.0
20.0
19.0
1.00
0.236
19.00
-0.47
0.00
RX
22.0
21.0
21.0
0.58
0.118
21.33
0.34
0.81
RZ
S
18.0
19.0
20.0
1.00
0.236
19.00
-0.47
0.00
sc
17.0
20.0
22.0
2.52
0.591
19.67
-0.24
0.23
SD
22.0
18.0
20.0
2.00
0.473
20.00
-0.12
0.35
SF
21.0
22.0
23.0
1.00
0.236
22.00
0.57
1.04
SI
20.0
20.0
22.0
1.15
0.236
20.67
0.11
0.58
SM
22.0
23.0
23.0
0.58
0.118
22.67
0.80
1.27
SN
21.0
21.0
22.0
0.58
0.118
21.33
0.34
0.81
SR
21.0
21.0
19.0
1.15
0.236
20.33
-0.01
0.46
ss
23.0
23.0
21.0
1.15
0.236
22.33
0.68
1.15
sv
20.0
19.0
22.0
1.53
0.354
20.33
-0.01
0.46
sx
18.0
19.0
21.0
1.53
0.354
19.33
-0.35
0.12
sz
19.0
20.0
21.0
1.00
0.236
20.00
-0.12
0.35
T
24.0
23.0
20.0
2.08
0.473
22.33
0.68
1.15
TC
26.0
24.0
24.0
1.15
0.236
24.67
1.49
1.96
TD
17.0
19.0
16.0
1.53
0.354
17.33
-1.05
-0.58
TH
TL
TO
36-0
35.0
32.0
2.08
0.473
34.33
4.84
5.31
X
=
No data submitted
TAG SYMBOLS
ff = Above control limit
0 S
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 28 / 37
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TQ
20.0
17.0
18.0
1.53
0.354
18.33
-0.70
-0.23
TR
36.0
39.0
42.0
3.00
0.709
39.00
6.46
6.93 x
TS
25.0
20.0
23.0
2.52
0.591
22.67
0.80
1.27
U
21.0
19.0
20.0
1.00
0.236
20.00
-0.12
0.35
UE
20.0
20.0
20.0
0.00
0.000
20.00
-0.12
0.35
UN
UP
22.0
20.0
20.0
1.15
0.236
20.67
0.11
0.58
UR
UT
UV
21.0
20.0
17.0
2.08
0.473
19.33
-0.35
0.12
UX
19.0
19.0
20.0
0.58
0.118
19.33
-0.35
0.12
VA
21.0
22.0
22.0
0.58
0.118
21.67
0.45
0.92
VC
20.0
21.0
19.0
1.00
0.236
20.00
-0.12
0.35
VE
20.0
23.0
22.0
1.53
0.354
21.67
0.45
0.92
VH
19.0
23.0
22.0
2.08
0.473
21.33
0.34
0.81
VI
18.0
22.0
20.0
2.00
0.473
20.00
-0.12
0.35
VM
23.0
23.0
23.0
0.00
0.000
23.00
0.92
1.39
VO
22.0
20.0
19.0
1.53
0.354
20.33
-0.01
0.46
vs
21.0
22.0
23.0
1.00
0.236
22.00
0.57
1.04
w
21.0
18.0
20.0
1.53
0.354
19.67
-0.24
0.23
WD
23.0
19.0
21.0
2.00
0.473
21.00
0.22
0.69
WI
21.0
29.0
20.0
4.93
1.120
23.33
1.03
1.50
WJ
19.0
18.0
16.0
1.53
0.354
17.67
-0.93
-0.46
WK
20.0
18.0
19.0
1.00
0.236
19.00
-0.47
0.00
WO
18.0
16.0
16.0
1.15
0.236
16.67
-1.28
-0.81
WR
19.0
20.0
20.0
0.58
0.118
19.67
-0.24
0.23
WS
23.0
20.0
20.0
1.73
0.354
21.00
0.22
0.69
WV
23.0
20.0
19.0
2.08
0.473
20.67
0.11
0.58
WW
20.0
18.0
17.0
1.53
0.354
18.33
-0.70
-0.23
WX
25.0
28.0
25.0
1.73
0.354
26.00
1.95
2.42
WY
X
20.0
24.0
20.0
2.31
0.473
21.33
0.34
0.81
XA
23.0
22.0
22.0
0.58
0.118
22.33
0.68
1.15
XB
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
14.33
EX
17.67
WJ
18.33
P
16.00
HL
17.67
QP
18.33
FJ
16.33
MP
18.00
NJ
18.33
BM
16.33
BA
18.00
GL
18.33
AY
16.67
WO
18.00
DO
18.67
QW
17.00
NK
18.33
WW
18.67
QU
17.33
TD
18.33
TQ
18.67
Q
17.33
RF
18.33
PX
18.67
A
= No data submitted
TAG SYMBOLS
IT
s Above control limit
0 = Insufficient data
x = Determined to be an outlier
U
a Below control limit
-------
29 / 37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
19.00
WK
20.00
JS
21.33
SN
19.00
S
20.00
GQ
21.33
RX
19.00
RU
20.00
FE
21.33
KL
19.00
LT
20.00
EL
21.33
JM
19.00
EA
20.00
EB
21.33
CS
19.33
UX
20.00
AZ
21.33
BB
19.33
UV
20.33
VO
21.33
AL
19.33
sx
20.33
SV
21.33
AK
19.33
IU
20.33
SR
21.67
VE
19.33
HX
20.33
QZ
21.67
VA
19.33
DT
20.33
QT
21.67
OM
19.33
AW
20.33
PM
21.67
K
19.33
AE
20.33
JG
21.67
HI
19.67
WR
20.33
FZ
22.00
VS
19.67
W
20.33
DH
22.00
SF
19.67
SC
20.33
AU
22.00
O
19.67
LR
20.33
AH
22.00
KX
19.67
GI
20.67
WV
22.33
XA
19.67
E
20.67
UP
22.33
T
19.67
DE
20.67
SI
22.33
ss
19.67
DD
20.67
RO
22.33
QM
19.67
D
20.67
R
22.33
cx
19.67
CA
20.67
N
22.33
BH
19.67
C
20.67
KH
22.67
TS
19.67
BO
20.67
JE
22.67
SM
19.67
BL
20.67
CJ
23.00
VM
19.67
BC
20.67
CE
23.00
MV
19.67
AJ
20.67
BK
23.00
DR
19.67
AI
20.67
AF
23.33
WI
20.00
VI
21.00
WS
23.33
PV
20.00
VC
21.00
WD
23.67
PU
20.00
UE
21.00
RR
23.67
HP
20.00
U
21.00
PW
24.67
TC
20.00
SZ
21.00
LF
25.00
PE
20.00
SD
21.00
I
26.00
WX
20.00
PB
21.00
HK
26.33
QX
20.00
OB
21.00
FL
27.67
LE
20.00
MX
21.00
CC
32.33
X
JY
20.00
M
21.33
X
34.33
X
TO
20.00
L
21.33
VH
39.00
166.67
X
X
TR
OA
s No data submitted
TAG SYMBOLS
IT
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
U
= Below control limit
\ 'J
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 30 / 37
Cesium-137
% responding labs Frequency distribution
20-
10-
Jh
-i 1 rฆ f ฆฆ T , ฆ | ฆ fis
-4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
20-
10-
[ | j ~y j J * ^ | ^ t -i;
-4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
31/37
Barium-133 Statistical Summary 169 Participants
The known value of this nuclide is 64.0 pCi/I with an expected precision of 6.0; the control limits
are 53.6 to 74.4; the warning regions are 53.6 to 57.1 and 70.9 to 74.4
26(15.4 %) Failed to respond
7(4.1 %) Outliers '
1 (0.6 %) Out of control
but not an outlier
Statistic
121(71.6 %) Within all limits
Respondents
14(8.3 %) In warning zone
but within control
Non-outliers
Mean
67.99
Grand Avg 61.39
Std. Dev.
59.44
3.70
Variance
3532.84
13.71
% Coef. of Var.
87.42
6.03
% deviation of mean from known value
6.24
-4.07
Norm. dev. of mean from known value
0.07
-0.70
Median
61.00
61.00
% deviation of median from known value
-4.69
-4.69
Norm dev. of median from known value
-0.05
-0.81
8(5.6 %) More than 3 norm. S.D.
14(9.8 %) Between 2 and 3 norm. S.D.
mm
a
,68(47.6 %) Within 1 norm. S.D.
'. of known value
53(37.1 %) Between 1 and 2 norm. S.D.
-------
32/37
CRD-LV Performance Evaluation: Gamma in Water,
8-Nov-1996
Bariiun-133
~ -
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
57.0
57.0
60.0
1.73
0.295
58.00
-0.98
-1.73
AE
64.0
65.0
63.0
1.00
0.197
64.00
0.75
0.00
AF
63.0
59.0
61.0
2.00
0.394
61.00
-0.11
-0.87
AH
61.0
63.0
61.0
1.15
0.197
61.67
0.08
-0.67
AI
59.0
58.0
57.0
1.00
0.197
58.00
-0.98
-1.73
AJ
63.0
63.0
62.0
0.58
0.098
62.67
0.37
-0.38
AK
65.0
65.0
67.0
1.15
0.197
65.67
1.23
0.48
AL
69.0
65.0
68.0
2.08
0.394
67.33
1.71
0.96
AP
AU
56.0
57.0
62.0
3.21
0.591
58.33
-0.88
-1.64
AW
59.0
58.0
60.0
1.00
0.197
59.00
-0.69
-1.44
AY
58.0
60.0
58.0
1.15
0.197
58.67
-0.79
-1.54
AZ
65.0
60.0
62.0
2.52
0.492
62.33
0.27
-0.48
BA
63.0
64.0
61.0
1.53
0.295
62.67
0.37
-0.38
BB
56.0
53.0
62.0
4.58
0.886
57.00
-1.27
-2.02
BC
66.0
64.0
65.0
1.00
0.197
65.00
1.04
0.29
B G
BH
60.0
62.0
60.0
1.15
0.197
60.67
-0.21
-0.96
BK
56.0
56.0
59.0
1.73
0.295
57.00
-1.27
-2.02
BL
65.0
69.0
63.0
3.06
0.591
65.67
1.23
0.48
BM
63.0
65.0
65.0
1.15
0.197
64.33
0.85
0.10
BN
BO
61.0
56.0
62.0
3.21
0.591
59.67
-0.50
-1.25
BW
C
62.0
62.0
61.0
0.58
0.098
61.67
0.08
-0.67
CA
58.0
60.0
63.0
2.52
0.492
60.33
-0.31
-1.06
CC
620.0
623.0
616.0
3.51
0.689
619.67
161.16
160.41
X
CE
59.0
62.0
63.0
2.08
0.394
61.33
-0.02
-0.77
CJ
59.0
53.0
58.0
3.21
0.591
56.67
-1.36
-2.12
CM
CO
cs
65.0
63.0
62.0
1.53
0.295
63.33
0.56
-0.19
cx
55.0
62.0
62.0
4.04
0.689
59.67
-0.50
-1.25
D
58.0
58.0
58.0
0.00
0.000
58.00
-0.98
-1.73
DD
58.0
57.0
61.0
2.08
0.394
58.67
-0.79
-1.54
DE
64.0
65.0
65.0
0.58
0.098
64.67
0.94
0.19
DH
57.0
58.0
57.0
0.58
0.098
57.33
-1.17
-1.92
DO
70.0
71.0
61.0
5.51
0.984
67.33
1.71
0.96
DR
62.0
60.0
64.0
2.00
0.394
62.00
0.17
-0.58
DT
62.0
64.0
69.0
3.61
0.689
65.00
1.04
0.29
DZ
E
61.0
58.0
59.0
1.53
0.295
59.33
-0.60
-1.35
EA
61.0
60.0
60.0
0.58
0.098
60.33
-0.31
-1.06
EB
58.0
58.0
58.0
0.00
0.000
58.00
-0.98
-1.73
EL
61.0
58.0
63.0
2.52
0.492
60.67
-0.21
-0.96
=
No data submitted
TAG SYMBOLS
ff = Above control limit
0
Insufficient data
x =
Determined to be an outlier
II = Below control limit
^ y
-------
Cf
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 33 / 37
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EW
EX
53.0
55.0
56.0
1.53
0.295
54.67
-1.94
-2.69
FE
63.0
62.0
61.0
1.00
0.197
62.00
0.17
-0.58
FJ
61.0
63.0
57.0
3.06
0.591
60.33
-0.31
-1.06
FL
65.0
64.0
66.0
1.00
0.197
65.00
1.04
0.29
FZ
64.0
64.0
58.0
3.46
0.591
62.00
0.17
-0.58
GI
64.0
66.0
61.0
2.52
0.492
63.67
0.66
-0.10
GL
56.0
61.0
63.0
3.61
0.689
60.00
-0.40
-1.15
GQ
62.0
62.0
62.0
0.00
0.000
62.00
0.17
-0.58
m
63.0
63.0
63.0
0.00
0.000
63.00
0.46
-0.29
HK
60.0
61.0
61.0
0.58
0.098
60.67
-0.21
-0.96
HL
39.0
36.0
36.0
2.08
0.394
36.67
-7.14
-7.89 x
HP
65.0
59.0
60.0
3.21
0.591
61.33
-0.02
-0.77
HX
60.0
59.0
57.0
1.53
0.295
58.67
-0.79
-1.54
I
60.0
61.0
62.0
1.00
0.197
61.00
-0.11
-0.87
IU
.r
65.0
63.0
62.0
1.53
0.295
63.33
0.56
-0.19
U
el Hi
64.0
62.0
64.0
1.15
0.197
63.33
0.56
-0.19
JG
51.0
53.0
55.0
2.00
0.394
53.00
-2.42
-3.18 U
JM
57.0
61.0
62.0
2.65
0.492
60.00
-0.40
-1.15
JS
60.0
58.0
63.0
2.52
0.492
60.33
-0.31
-1.06
JY
68.0
71.0
71.0
1.73
0.295
70.00
2.48
1.73
K
60.0
60.0
61.0
0.58
0.098
60.33
-0.31
-1.06
KH
64.0
64.0
62.0
1.15
0.197
63.33
0.56
-0.19
KL
61.0
63.0
64.0
1.53
0.295
62.67
0.37
-0.38
KX
61.0
63.0
61.0
1.15
0.197
61.67
0.08
-0.67
L
60.0
61.0
59.0
1.00
0.197
60.00
-0.40
-1.15
LE
68.0
73.0
78.0
5.00
0.984
73.00
3.35
2.60
LF
66.0
66.0
66.0
0.00
0.000
66.00
1.33
0.58
LR
58.0
59.0
60.0
1.00
0.197
59.00
-0.69
-1.44
LT
55.0
57.0
68.0
7.00
1.533
60.00
-0.40
-1.15
M
56.0
59.0
62.0
3.00
0.591
59.00
-0.69
-1.44
MP
57.0
57.0
56.0
0.58
0.098
56.67
-1.36
-2.12
MV
61.0
59.0
62.0
1.53
0.295
60.67
-0.21
-0.96
MX
65.0
65.0
64.0
0.58
0.098
64.67
0.94
0.19
N
66.0
66.0
66.0
0.00
0.000
66.00
1.33
0.58
NH
NJ
57.0
62.0
57.0
2.89
0.492
58.67
-0.79
-1.54
NK
57.0
55.0
61.0
3.06
0.591
57.67
-1.08
-1.83
NO
O
66.0
68.0
70.0
2.00
0.394
68.00
1.91
1.15
OA
490.0
510.0
500.0
10.00
2.846
500.00
126.61
125.86 x
OB
OK
OM
63.0
61.0
59.0
2.00
0.394
61.00
-0.11
-0.87
=
0 =
No data submitted
Insufficient data
X =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
U s Below control limit
v- -y
-------
34/37
CRD-LV Performance Evaluation: Gamma
in Water,
8-Nov-1996
Barium-133
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
P
65.0
73.0
61.0
6.11
1.345
66.33
1.43
0.67
PB
62.0
64.0
63.0
1.00
0.197
63.00
0.46
-0.29
PE
65.0
65.0
64.0
0.58
0.098
64.67
0.94
0.19
PM
54.0
61.0
59.0
3.61
0.689
58.00
-0.98
-1.73
PQ
PU
PV
61.0
67.0
61.0
3.46
0.591
63.00
0.46
-0.29
PW
59.0
59.0
60.0
0.58
0.098
59.33
-0.60
-1.35
PX
65.0
65.0
63.0
1.15
0.197
64.33
0.85
0.10
Q
62.0
67.0
65.0
2.52
0.492
64.67
0.94
0.19
QM
87.0
88,0
77.0
6.08
1.158
84.00
6.53
5.77
X
QP
59.0
56.0
51.0
4.04
0.788
55.33
-1.75
-2.50
QT
62.0
62.0
62.0
0.00
0.000
62.00
0.17
-0.58
QU
44.0
44.0
46.0
0.58
0.098
44.33
-4.93
-5.68
X
QW
46.0
43.0
44.0
1.53
0.295
44.33
-4.93
-5.68
X
QX
69.0
70.0
70.0
0.58
0.098
69.67
2.39
1.64
QZ
60.0
60.0
63.0
1.73
0.295
61.00
-0.11
-0.87
R
59.0
61.0
60.0
1.00
0.197
60.00
-0.40
-1.15
RF
57.0
58.0
57.0
0.58
0.098
57.33
-1.17
-1.92
RH
RK
RO
55.0
52.0
54.0
1.53
0.295
53.67
-2.23
-2.98
RR
55.0
66.0
61.0
5.51
1.158
60.67
-0.21
-0.96
RU
60.0
62.0
62.0
1.15
0.197
61.33
-0.02
-0.77
RX
63.0
64.0
68.0
2.65
0.492
65.00
1.04
0.29
RZ
S
58.0
59.0
60.0
1.00
0.197
59.00
-0.69
-1.44
sc
56.0
52.0
58.0
3.06
0.591
55.33
-1.75
-2.50
SD
62.0
66.0
56.0
5.03
0.984
61.33
-0.02
-0.77
SF
64.0
64.0
67.0
1.73
0.295
65.00
1.04
0.29
SI
61.0
62.0
55.0
3.79
0.689
59.33
-0.60
-1.35
SM
68.0
63.0
63.0
2.89
0.492
64.67
0.94
0.19
SN
60.0
55.0
57.0
2.52
0.492
57.33
-1.17
-1.92
SR
48.0
60.0
64.0
8.33
2.095
57.33
-1.17
-1.92
ss
58.0
59.0
59.0
0.58
0.098
58.67
-0.79
-1.54
sv
65.0
68.0
64.0
2.08
0.394
65.67
1.23
0.48
sx
58.0
66.0
55.0
5.69
1.158
59.67
-0.50
-1.25
sz
62.0
61.0
52.0
5.51
0.984
58.33
-0.88
-1.64
T
65.0
63.0
64.0
1.00
0.197
64.00
0.75
0.00
TC
58.0
59.0
61.0
1.53
0.295
59.33
-0.60
-1.35
TD
58.0
53.0
55.0
2.52
0.492
55.33
-1.75
-2.50
TH
TL
#
TO
62.0
52.0
53.0
5.51
0.984
55.67
-1.65
-2.41
= No data submitted
TAG SYMBOLS
IT s Above control limit
0 = Insufficient data x = Determined to be an outlier U = Below control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
35/37
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TQ
61.0
63.0
65.0
2.00
0.394
63.00
0.46
-0.29
TR
58.0
61.0
60.0
1.53
0.295
59.67
-0.50
-1.25
TS
79.0
60.0
63.0
10.21
2.658
67.33
1.71
0.96
U
63.0
63.0
56.0
4.04
0.689
60.67
-0.21
-0.96
UE
61.0
62.0
61.0
0.58
0.098
61.33
-0.02
-0.77
UN
UP
64.0
64.0
65.0
0.58
0.098
64.33
0.85
0.10
UR
UT
UV
56.0
53.0
62.0
4.58
0.886
57.00
-1.27
-2.02
UX
56.0
56.0
62.0
3.46
0.591
58.00
-0.98
-1.73
VA
71.0
68.0
66.0
2.52
0.492
68.33
2.00
1.25
VC
64.0
62.0
59.0
2.52
0.492
61.67
0.08
-0.67
VE
70.0
68.0
69.0
1.00
0.197
69.00
2.20
1.44
VH
63.0
57.0
65.0
4.16
0.788
61.67
0.08
-0.67
VI
57.0
56.0
61.0
2.65
0.492
58.00
-0.98
-1.73
VM
62.0
58.0
60.0
2.00
0.394
60.00
-0.40
-1.15
VO
66.0
68.0
62.0
3.06
0.591
65.33
1.14
0.38
vs
60.0
59.0
60.0
0.58
0.098
59.67
-0.50
-1.25
w
59.0
64.0
64.0
2.89
0.492
62.33
0.27
-0.48
WD
61.0
64.0
60.0
2.08
0.394
61.67
0.08
-0.67
WI
62.0
81.0
60.0
11.59
3.033
67.67
1.81
1.06
WJ
62.0
63.0
64.0
1.00
0.197
63.00
0.46
-0.29
WK
64.0
62.0
63.0
1.00
0.197
63.00
0.46
-0.29
WO
56.0
54.0
52.0
2.00
0.394
54.00
-2.13
-2.89
WR
60.0
60.0
61.0
0.58
0.098
60.33
-0.31
-1.06
WS
71.0
66.0
69.0
2.52
0.492
68.67
2.10
1.35
wv
62.0
61.0
66.0
2.65
0.492
63.00
0.46
-0.29
WW
58.0
57.0
48.0
5.51
0.984
54.33
-2.04
-2.79
WX
44.0
45.0
44.0
0.58
0.098
44.33
-4.93
-5.68 x
WY
X
58.0
58.0
56.0
1.15
0.197
57.33
-1.17
-1.92
XA
69.0
67.0
69.0
1.15
0.197
68.33
2.00
1.25
XB
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average Tag
Lab
36.67
X
HL
54.67
EX
57.00
BK
44.33
X
WX
55.33
TD
57.00
BB
44.33
X
QW
55.33
SC
57.33
X
44.33
X
QU
55.33
QP
57.33
SR
53.00
JG
55.67
TO
57.33
SN
53.67
RO
56.67
MP
57.33
RF
54.00
WO
56.67
CJ
57.33
DH
54.33
WW
57.00
UV
57.67
NK
= No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
II s Below control limit
-------
36 / 37 CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996
^
~ *
Barium-133
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
58.00
VI
60.67
U
63.33
IU
58.00
ux
60.67
RR
63.33
cs
58.00
PM
60.67
MV
63.67
GI
58.00
EB
60.67
HK
64.00
T
58.00
D
60.67
EL
64.00
AE
58.00
AI
60.67
BH
64.33
UP
58.00
A
61.00
QZ
64.33
PX
58.33
SZ
61.00
OM
64.33
BM
58.33
AU
61.00
I
64.67
SM
58.67
ss
61.00
AF
64.67
Q
58.67
NJ
61.33
UE
64.67
PE
58.67
HX
61.33
SD
64.67
MX
58.67
DD
61.33
RU
64.67
DE
58.67
AY
61.33
HP
65.00
SF
59.00
S
61.33
CE
65.00
RX
59.00
M
61.67
WD
65.00
FL
59.00
LR
61.67
VH
65.00
DT
59.00
AW
61.67
VC
65.00
BC
59.33
TC
61.67
KX
65.33
VO
59.33
SI
61.67
C
65.67
sv
59.33
PW
61.67
AH
65.67
BL
59.33
E
62.00
QT
65.67
AK
59.67
vs
62.00
GQ
66.00
N
59.67
TR
62.00
FZ
66.00
LF
59.67
sx
62.00
FE
66.33
P
59.67
cx
62.00-
DR
67.33
TS
59.67
BO
62.33
W
67.33
DO
60.00
VM
62.33
AZ
67.33
AL
60.00
R
62.67
KL
67.67
WI
60.00
LT
62.67
BA
68.00
O
60.00
L
62.67
AJ
68.33
XA
60.00
JM
63.00
WV
68.33
VA
60.00
GL
63.00
WK
68.67
ws
60.33
WR
63.00
WJ
69.00
VE
60.33
K
63.00
TQ
69.67
QX
60.33
JS
63.00
PV
70.00
JY
60.33
FJ
63.00
PB
73.00
LE
60.33
EA
63.00
HI
84.00
X
QM
60.33
CA
63.33
KH
500.00
X
OA
63.33
JE
619.67
X
CC
s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an
outlier
IT
U
= Above control limit
= Below control limit
-------
f, , =
CRD-LV Performance Evaluation: Gamma in Water, 8-Nov-1996 37/37
Barium-133
% responding labs Frequency distribution
IO-T^"="
2J
........ 'I I I 1 * I
-6 *4 -2 6 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10
kjdul
,tbIf 11II|m|bซ if
oJi" i ฅ i i i II'" ~t~~ i ~ i
ฆ6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
------- |