-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-UVS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Radiation Sciences Branch (CRD-LV)
Performance Evaluation Study for Blind-B; April 18, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995 1/44
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the 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.
-------
2/44 CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the '
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, CRD-LV, 702/798-2104.
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
3/44
Gross Beta Statistical Summary 194 Participants
The known value of this nuclide is 86.6 pCi/1 with an expected precision of 10.0; the control limits
are 69.3 to 103.9; the warning regions are 69.3 to 75.0 and 98.2 to 103.9
30(15.5 %) Failed to respond
118(60.8 %) Within all limits
8(4.1 %) Outliers ' /
19(9.8 %) Out of control •
19(9.8 %) In warning zone
but not an outlier
r
i i
but within control
Statistic
Respondents
Non-outliers
Mean
94.96
Grand Avg 86.93
Std. Dev.
83.40
10.42
Variance
6954.79
108.56
% Coef. of Var.
87.83
11.99
% deviation of mean from known value
9.65
0.38
Norm. dev. of mean from known value
0.10
0.03
Median
88.02
87.97
% deviation of median from known value
1.64
1.58
Norm. dev. of median from known value
0.02
0.13
27(16.5 %) More than 3 norm. S.D. »
19(11.6 %) Between 2 and 3 norm. S.D.
0(42.7 %) Within 1 norm. S.D.
of known value
48(29.3 %) Between 1 and 2 norm. S.D.
-------
(t ^
4/44 CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
91.2
90.1
90.6
0.55
0.065
90.63
0.64
0.70
AE
66.3
70.0
70.1
2.17
0.224
68.80
-3.14
-3.08
AF
89.0
86.0
95.0
4.58
0.532
90.00
0.53
0.59
AH
91.0
93.1
78.2
8.06
0.880
87.43
0.09
0.14
AI
•
AJ
97.7
96.9
86.3
6.36
0.673
93.63
1.16
1.22
AK
83.2
87.4
86.1
2.15
0.248
85.57
-0.24
-0.18
AL
103.7
97.7
99.7
3.05
0.354
100.37
2.33
2.38
AO
•
AP
90.8
90.4
87.3
1.92
0.207
89.50
0.45
0.50
AR
103.0
92.2
93.9
5.81
0.638
96.37
1.63
1.69
AU
107.0
103.0
108.0
2.65
0.295
106.00
3.30
3.36
IT
AW
92.9
90.1
90.0
1.65
0.171
91.00
0.70
0.76
AZ
71.0
62.7
60.5
5.54
0.620
64.73
-3.84
-3.79
U
BA
86.6
85.7
87.7
1.00
0.118
86.67
-0.05
0.01
BB
68.6
69.8
69.2
0.60
0.071
69.20
-3.07
-3.01
11
BC
81.8
83.1
83.3
0.81
0.089
82.73
-0.73
-0.67
BG
BH
82.2
83.5
83.9
0.89
0.100
83.20
-0.65
-0.59
BK
91.4
95.6
93.0
2.12
0.248
93.33
1.11
1.17
BL
m
BM
90.8
90.2
89.8
0.50
0.059
90.27
0.58
0.64
BN
90.0
90.5
92.1
1.10
0.124
90.87
0.68
0.74
BO
88.1
91.1
86.9
2.16
0.248
88.70
0.31
0.36
BS
95.9
97.6
94.3
1.65
0.195
95.93
1.56
1.62
BW
44.0
62.0
30.0
16.04
2.695
45.33
-7.20
-7.15
X
C
97.1
96.5
95.9
0.60
0.071
96.50
1.66
1.71
CA
78.2
71.9
74.2
3.19
0.372
74.77
-2.11
-2.05
CE
94.0
91.5
91.1
1.57
0.171
92.20
0.91
0.97
CG
90.1
85.6
88.4
2.27
0.266
88.03
0.19
0.25
CJ
78.0
83.0
80.0
2.52
0.295
80.33
-1.14
-1.09
CK
85.1
91.1
97.0
5.95
0.703
91.07
0.72
0.77
CM
~
CO
78.0
78.0
72.7
3.06
0.313
76.23
-1.85
-1.80
CP
342.0
468.0
405.0
63.00
13.271
405.00
55.09
55.15
X
CQ
85.0
86.0
86.0
0.58
0.059
85.67
-0.22
-0.16
CS
77.0
83.0
88.1
5.56
0.656
82.70
-0.73
-0.68
CX
90.3
92.8
93.5
1.68
0.189
92.20
0.91
0.97
D
96.0
92.3
93.8
1.86
0.219
94.03
1.23
1.29
DB
98.0
98.0
101.0
1.73
0.177
99.00
2.09
2.15
DD
91.9
87.6
89.3
2.17
0.254
89.60
0.46
0.52
DE
89.0
89.0
89.1
0.06
0.006
89.03
0.36
0.42
DG
•
DJ
•
DL
91.0
89.0
88.0
1.53
0.177
89.33
0.42
0.47
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1) = Above control limit
II = Below control limit
^ -y
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995 5/44
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DM
75.7
77.9
80.2
2.25
0.266
77.93
-1.56
-1.50
DO
•
DS
76.0
76.4
77.6
0.83
0.095
76.67
-1.78
-1.72
DT
106.0
100.0
106.0
3.46
0.354
104.00
2.96
3.01 ft
DZ
90.6
91.2
95.0
2.39
0.260
92.27
0.92
0.98
E
90.0
90.0
90.0
0.00
0.000
90.00
0.53
0.59
EB
91.5
89.9
89.9
0.92
0.095
90.43
0.61
0.66
EL
•
EO
86.0
86.0
90.0
2.31
0.236
87.33
0.07
0.13
ER
•
EV
81.3
81.4
79.6
1.01
0.106
80.77
-1.07
-1.01
EX
... .
•
FF
67.0
73.0
73.0
3.46
0.354
71.00
-2.76
-2.70
FJ
75.8
77.1
88.5
6.99
0.750
80.47
-1.12
-1.06
FL
70.3
75.8
75.2
3.02
0.325
73.77
-2.28
-2.22
FN
90.9
88.8
87.8
1.58
0.183
89.17
0.39
0.44
FU
74.2
72.0
75.5
1.77
0.207
73.90
-2.26
-2.20
FZ
85.0
90.0
89.0
2.65
0.295
88.00
0.19
0.24
GE
87.0
88.0
88.0
0.58
0.059
87.67
0.13
0.18
GI
•
GQ
85.3
78.5
80.0
3.57
0.402
81.27
-0.98
-0.92
GT
67.9
66.4
67.1
0.75
0.089
67.13
-3.43
-3.37 U
GZ
122.?
123.5
126.2
1.83
0.207
124.13
6.44
6.50 x
HI
79.0
85.0
75.0
5.03
0.591
79.67
-1.26
-1.20
HK
93.1
98.7
93.5
3.12
0.331
95.10
1.42
1.47
HL
81.0
81.0
81.0
0.00
0.000
81.00
-1.03
-0.97
HP
87.2
86.7
93.2
3.62
0.384
89.03
0.36
0.42
I
78.8
77.9
76.8
1.00
0.118
77.83
-1.58
-1.52
IC
75.5
80.0
78.4
2.28
0.266
77.97
-1.55
-1.50
ID
76.4
80.6
78.6
2.10
0.248
78.53
-1.45
-1.40
J
87.8
88.9
90.3
1.25
0.148
89.00
0.36
0.42
JE
100.1
91.6
95.8
4.25
0.502
95.83
1.54
1.60
JG
95.3
94.6
92.5
1.46
0.165
94.13
1.25
1.30
JN
76.5
75.2
75.8
0.65
0.077
75.83
-1.92
-1.86
JQ
121.5
114.9
120.3
3.52
0.390
118.90
5.54
5.59 ft
JS
102.8
104.9
104.2
1.07
0.124
103.97
2.95
3.01 ft
JY
79.4
76.9
78.4
1.26
0.148
78.23
-1.51
-1.45
K
70.2
72.1
72.1
1.10
0.112
71.47
-2.68
-2.62
KE
80.4
82.2
78.9
1.65
0.195
80.50
-1.11
-1.06
KT
96.0
96.0
95.0
0.58
0.059
95.67
1.51
1.57
KX
90.0
91.0
93.0
1.53
0.177
91.33
0.76
0.82
L
99.0
96.0
98.0
1.53
0.177
97.67
1.86
1.92
LF
75.0
77.0
73.0
2.00
0.236
75.00
-2.07
-2.01
LG
•
LL
84.2
81.9
81.6
1.42
0.154
82.57
-0.76
-0.70
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
U = Below control limit
-------
6/44 CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LR
94.0
91.0
91.0
1.73
0.177
92.00
0.88
0.94
LT
84.6
75.7
79.9
4.45
0.526
80.07
-1.19
-1.13
M
104.0
96.0
100.0
4.00
0.473
100.00
2.26
2.32
MA
37.0
41.0
45.0
4.00
0.473
41.00
-7.96
-7.90 X
MF
77.0
75.1
76.4
0.97
0.112
76.17
-1.86
-1.81
MP
»
MQ
87.0
88.0
88.0
0.58
0.059
87.67
0.13
0.18
MV
83.0
87.0
88.0
2.65
0.295
86.00
-0.16
-0.10
MY
•
N
89.2
89.6
89.1
0.27
0.030
89.30
0.41
0.47
NA
117.8
121.4
121.0
1.97
0.213
120.07
5.74
5.80 ft
NH
83.0
81.0
88.0
3.61
0.413
84.00
-0.51
-0.45
NI
•
NJ
81.0
83.0
81.0
1.15
0.118
81.67
-0.91
-0.85
NK
94.4
98.7
73.1
13.71
1.975
88.73
0.31
0.37
NO
98.6
104.0
110.5
5.96
0.703
104.37
3.02
3.08 ft
NT
88.0
86.6
88.6
1.03
0.118
87.73
0.14
0.20
O
80.7
79.9
79.6
0.57
0.065
80.07
-1.19
-1.13
OF
89.5
89.9
86.0
2.15
0.230
88.47
0.27
0.32
OS
100.7
98.6
98.4
1.27
0.136
99.23
2.13
2.19
OX
•
OY
1143.0
1090.0
1037.0
53.00
11.021
1090.00
173.74
173.79 x
OZ
164.2
174.0
172.8
5.35
0.579
170.33
14.45
14.50 x
P
101.0
102.0
101.2
0.53
0.059
101.40
2.51
2.56
PA
90.2
84.9
90.8
3.25
0.348
88.63
0.30
0.35
PB
99.8
97.1
100.0
1.62
0.171
98.97
2.08
2.14
PG
88.9
90.7
92.3
1.70
0.201
90.63
0.64
0.70
PI
•
PM
92.1
88.3
90.1
1.90
0.224
90.17
0.56
0.62
PQ
86.9
86.6
86.9
0.17
0.018
86.80
-0.02
0.03
PR
69.0
71.0
70.0
1.00
0.118
70.00
-2.93
-2.88
PV
77.2
78.3
83.5
3.37
0.372
79.67
-1.26
-1.20
PW
•
Q
97.7
95.9
96.8
0.90
0.106
96.80
1.71
1.77
QC
8.2
8.3
7.9
0.21
0.024
8.13
-13.65
-13.59 x
QJ
86.0
87.4
86.7
0.70
0.083
86.70
-0.04
0.02
QP
98.0
100.0
95.0
2.52
0.295
97.67
1.86
1.92
QQ
89.0
90.6
90.0
0.81
0.095
89.87
0.51
0.57
QT
84.2
86.9
88.3
2.08
0.242
86.47
-0.08
-0.02
QU
76.0
80.8
79.9
2.55
0.284
78.90
-1.39
-1.33
QW
86.4
85.7
81.3
2.76
0.301
84.47
-0.43
-0.37
QX
98.6
98.2
95.7
1.57
0.171
97.50
1.83
1.89
QY
•
QZ
100.6
99.2
101.2
1.03
0.118
100.33
2.32
2.38
RD
80.0
76.0
81.0
2.65
0.295
79.00
-1.37
-1.32
• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
1! = Below control limit
-------
f(
^
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
7/44
r
Gross Beta
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RE
67.1
70.1
65.8
2.21
0.254
67.67
-3.34
-3.28
RF
84.5
85.6
89.5
2.63
0.295
86.53
-0.07
-0.01
RG
93.0
93.0
96.0
1.73
0.177
94.00
1.22
1.28
RJ
' ¦
- V •. .
•
RK
62.1
70.8
61.8
5.11
0.532
64.90
-3.82
-3.76
RP
•
RR
82.0
83.0
83.0
0.58
0.059
82.67
-0.74
-0.68
RV
91.0
99.0
99.0
4.62
0.473
96.33
1.63
1.69
RZ
91.2
90.2
91.6
0.72
0.083
91.00
0.70
0.76
S
97.3
99.9
97.8
1.38
0.154
98.33
1.98
2.03
sc
81.1
80.3
86.8
3.54
0.384
82.73
-0.73
-0.67
SD
65.5
68.1
67.3
1.33
0.154
66.97
-3.46
-3.40
U
SF
96.5
90.7
82.5
7.03
0.827
89.90
0.51
0.57
SI
82.0
84.8
85.5
1.85
0.207
84.10
-0.49
-0.43
SL
107.0
75.5
104.0
17.39
2.639
95.50
1.48
1.54
SM
84.5
84.1
83.6
0.45
0.053
84.07
-0.50
-0.44
SN
79.9
82.3
85.4
2.76
0.325
82.53
-0.76
-0.70
SO
87.8
85.5
89.3
1.91
0.224
87.53
0.10
0.16
SR
82.0
82.0
75.0
4.04
0.413
79.67
-1.26
-1.20
SS
79.8
75.3
72.0
3.92
0.461
75.70
-1.95
-1.89
ST
85.6
85.3
84.9
0.35
0.041
85.27
-0.29
-0.23
sx
74.5
100.5
88.8
13.02
2.020
87.93
0.17
0.23
sz
117.5
119.8
122.1
2.30
0.272
119.80
5.69
5.75
IT
T
85.0
82.1
85.0
1.67
0.171
84.03
-0.50
-0.44
TD
74.2
88.0
72.2
8.60
0.933
78.13
-1.52
-1.47
TE
71.0
65.0
68.0
3.00
0.354
68.00
-3.28
-3.22
li
TH
94.0
96.0
96.0
1.15
0.118
95.33
1.46
1.51
TI
90.1
97.4
90.3
4.16
0.431
92.60
0.98
1.04
TL
96.7
97.9
98.8
1.05
0.124
97.80
1.88
1.94
TN
91.2
100.6
86.1
7.36
0.856
92.63
0.99
1.05
TQ
76.5
74.9
72.2
2.17
0.254
74.53
-2.15
-2.09
TS
107.1
104.9
106.4
1.12
0.130
106.13
3.33
3.38
TY
80.0
79.0
81.0
1.00
0.118
80.00
-1.20
-1.14
U
85.4
90.3
92.1
3.47
0.396
89.27
0.40
0.46
UA
130.0
128.0 .
125.0
2.52
0.295
127.67
7.06
7.11
X
UE
919
96.6
89.5
3.61
0.419
92.67
0.99
1.05
UG
•
UK
•
UN
78.9
68.2
53.3
12.86
1.975
66.80
-3.49
-3.43
U
UP
90.3
92.5
92.4
1.24
0.130
91.73
0.83
0.89
UQ
89.0
90.0
90.0
0.58
0.059
89.67
0.47
0.53
uw
92.5
93.7
93.6
0.67
0.071
93.27
1.10
1.15
UY
87.9
86.1
87.1
0.90
0.106
87.03
0.02
0.08
VA
75.5
52.0
70.7
12.42
1.739
66.07
-3.61
-3.56
Si
VC
•
• =
No data submitted
TAG SYMBOLS
ft s Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
-y
-------
(c
^
8/44
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
r
Gross Beta
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VG
71.6
70.0
68.0 1.80
0.213
69.87 -2.96
-2.90
VI
69.3
67.6
68.9 0.89
0.100
68.60 -3.17
-3.12
VJ
76.2
79.8
76.8 1.93
0.213
77.60 -1.62
-1.56
VM
•
VN
•
vo
90.5
132.0
85.3 25.59
4.349
102.60 2.71
2.77
VQ
~
VT
91.8
89.4
93.8 2.20
0.260
91.67 0.82
0.88
VU
•
W
95.7
92.8
93.1 1.59
0.171
93.87 1.20
1.26
WE
92.1
88.8
89.5 1.74
0.195
90.13 0.55
0.61
WF
72.3
74.5
76.3 2.00
0.236
74.37 -2.18
-2.12
X
Z
90.9
86.3
84.9 3.14
0.354
87.37 0.08
0.13
•
Data sorted by Laboratory Averag
re
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.13
X
QC
76.67
DS
82.73
BC
41.00
X
MA
77.60
VJ
83.20
BH
45.33
X
BW
77.83
I
84.00
NH
64.73
li
AZ
77.93
DM
84.03
T
64.90
JJ
RK
77.97
IC
84.07
SM
66.07
u
VA
78.13
TD
84.10
SI
66.80
u
UN
78.23
JY
84.47
QW
66.97
li
SD
78.53
ID
85.27
ST
67.13
GT
78.90
QU
85.57
AK
67.67
U
RE
79.00
RD
85.67
CQ
68.00
u
TE
79.67
SR
86.00
MV
68.60
u
VI
79.67
PV
86.47
QT
68.80
u
AE
79.67
HI
86.53
RF
69.20
li
BB
80.00
TY
86.67
BA
69.87
VG
80.07
O
86.70
QJ
70.00
PR
80.07
LT
86.80
PQ
71.00
FF
80.33
CJ
87.03
UY
71.47
K
80.47
FJ
87.33
EO
73.77
FL
80.50
KE
87.37
X
73.90
FU
80.77
EV
87.43
AH
74.37
WF
81.00
HL
87.53
SO
74.53
TQ
81.27
GQ
87.67
MQ
74.77
CA
81.67
NJ
87.67
GE
75.00
LF
82.53
SN
87.73
NT
75.70
SS
82.57
LL
87.93
SX
75.83
JN
82.67
RR
88.00
FZ
76.17
MF
82.70
CS
88.03
CG
76.23
CO
82.73
SC
88.47
OF
• s No data submitted
TAG SYMBOLS
ft = Above control limit
0 s Insufficient data
V
x = Determined to be an outlier
U- -- Below control limit
— —-y
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
9/44
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
88.63
PA
91.07
CK
96.80
Q
88.70
BO
91.33
KX
97.50
QX
88.73
NK
91.67
VT
97.67
QP
89.00
J
91.73
UP
97.67
L
89.03
HP
92.00
LR
97.80
TL
89.03
DE
92.20
CX
98.33
S
89.17
FN
92.20
CE
98.97
PB
89.27
U
92.27
DZ
99.00
DB
89.30
N
92.60
n
99.23
OS
89.33
DL
92.63
TN
100.00
M
89.50
AP
92.67
UE
100.33
QZ
89.60
DD
93.27
UW
100.37
AL
89.67
UQ
93.33
BK
101.40
P
89.87
QQ
93.63
AJ
102.60
VO
89.90
SF
93.87
W
103.97
ft
JS
90.00
E
94.00
RG
104.00
ft
DT
90.00
AF
94.03
D
104.37
ft
NO
90.13
WE
94.13
JG
106.00
ft
AU
90.17
PM
95.10
HK
106.13
ft
TS
90.27
BM
95.33
TH
118.90
ft
JQ
90.43
EB
95.50
SL
119.80
ft
SZ
90.63
PG
95.67
KT
120.07
ft
NA
90.63
A
95.83
JE
124.13
X
GZ
90.87
BN
95.93
BS
127.67
X
UA
91.00
RZ
96.33
RV
170.33
X
OZ
91.00
AW
96.37
AR
405.00
X
CP
96.50
C
1090.00
X
OY
% responding labs
Frequency distribution
¦¦j"-
¦f---
-6
% responding labs
-2 o +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
+6
a ._¦¦¦— ¦¦¦¦¦IflHll
BIlMhhf-f , ,
-1
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
11 = Below control limit
-------
r,
^
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
10/44
' "\
Strontium-89 Statistical Summary 194 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 5.0; the control limits
are 11.3 to 28.7; the warning regions are 11.3 to 14.2 and 25.8 to 28.7
107(55.2 %) Failed to respond
75(38.7 %) Within all limits
3(1.5 %) Outliers
3(1.5 %) Out of control
but not an outlier
6(3.1 %) In warning zone
but wlthlh control
Statistic Respondents Non-outliers
Mean
18.65
Grand Avg 19.09
Std. Dev.
3.95
3.23
Variance
15.59
10.46
% Coef. of Var.
21.17
16.95
% deviation of mean from known value
-6.76
-4.56
Norm. dev. of mean from known value
-0.34
-0.28
Median
19.67
19.83
% deviation of median from known value
-1.67
-0.83
Norm. dev. of median from known value
-0.08
-0.05
58(66.7 %) Within 1 norm. S.D.
of known value
6(6.9 %) More than 3 norm. S.D.
17(19.5 %) Between 1 and 2 norm. S.D.
-------
ft
11 /
44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
^
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
18.0
20.0
19.0
1.00
0.236
19.00
-0.03
-0.35
AE
22.0
23.0
22.0
0.58
0.118
22.33
1.12
0.81
AF
20.0
21.0
20.0
0.58
0.118
20.33
0.43
0.12
AH
• '
AI
•
AJ
23.0
16.0
17.0
3.79
0.827
18.67
-0.15
-0.46
AK
20.0
20.0
22.0
1.15
0.236
20.67
0.55
0.23
AL
23.0
24.0
23.0
0.58
0.118
23.33
1.47
1.15
AO
•
AP
•
AR
•
AU
20.0
22.0
24.0
2.00
0.473
22.00
1.01
0.69
AW
20.0
19.0
17.0
1.53
0.354
18.67
-0.15
-0.46
AZ
20.0
20.0
22.0
1.15
0.236
20.67
0.55
0.23
BA
20.0
20.0
21.0
0.58
0.118
20.33
0.43
0.12
BB
•
BC
18.0
18.0
17.0
0.58
0.118
17.67
-0.49
-0.81
BG
•
BH
21.0
21.0
20.0
0.58
0.118
20.67
0.55
0.23
BK
•
BL
21.0
23.0
17.0
3.06
0.709
20.33
0.43
0.12
BM
18.0
20.0
19.0
1.00
0.236
19.00
-0.03
-0.35
BN
•
BO
21.0
20.0
20.0
0.58
0.118
20.33
0.43
0.12
BS
•
BW
•
C
25.0
23.0
22.0
1.53
0.354
23.33
1.47
1.15
CA
17.0
17.0
17.0
0.00
0.000
17.00
-0.72
-1.04
CE
•
CG
22.0
23.0
23.0
0.58
0.118
22.67
1.24
0.92
CJ
20.0
20.0
22.0
1.15
0.236
20.67
0.55
0.23
CK
11.0
11.0
20.0
5.20
1.120
14.00
-1.76
-2.08
CM
•
CO
18.0
17.0
18.0
0.58
0.118
17.67
-0.49
-0.81
CP
23.0
26.0
28.0
2.52
0.591
25.67
2.28
1.96
CQ
17.0
18.0
18.0
0.58
0.118
17.67
-0.49
-0.81
CS
15.0
19.0
19.0
2.31
0.473
17.67
-0.49
-0.81
CX
14.0
16.0
19.0
2.52
0.591
16.33
-0.95
-1.27
D
•
DB
•
DD
21.0
20.0
20.0
0.58
0.118
20.33
0.43
0.12
DE
20.0
20.0
21.0
0.58
0.118
20.33
0.43
0.12
DG
12.0
12.0
12.0
0.00
0.000
12.00
-2.46
-2.77
DJ
•
DL
•
• =
No data submitted
TAG SYMBOLS
1T s Above control limit
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
yj
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995 12/44
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
DM
•
DO
19.0
21.0
20.0
1.00
0.236
20.00
0.32
0.00
DS
•
DT
20.0
18.0
17.0
1.53
0.354
18.33
-0.26
-0.58
DZ
20.0
22.0
21.0
1.00
0.236
21.00
0.66
0.35
E
20.0
19.0
20.0
0.58
0.118
19.67
0.20
-0.12
EB
20.0
25.0
22.0
2.52
0.591
22.33
1.12
0.81
EL
27.0
24.0
24.0
1.73
0.354
25.00
2.05
1.73
EO
•
ER
•
EV
• -
EX
•
FF
• ¦
FJ
•.
FL
•
FN
* ,
FU
24.0
23.0
25.0
1.00
0.236
24.00
1.70
1.39
FZ
GE
•
GI
•
GQ
20.0
20.0
20.0
0.00
0.000
20.00
0.32
0.00
GT
•
GZ
•
HI
HK
17.0
17.0
17.0
0.00
0.000
17.00
-0.72
-1.04
HL
•
HP
25.0
22.0
18.0
3.51
0.827
21.67
0.89
0.58
I
22.0
22.0
22.0
0.00
0.000
22.00
1.01
0.69
IC
17.0
18.0
17.0
0.58
0.118
17.33
-0.61
-0.92
ID
J
20.0
20.0
21.0
0.58
0.118
20.33
0.43
0.12
JE
8.0
5.0
6.0
1.53
0.354
6.33
-4:42
-4.73 x
JG
•
JN
•
JQ
• -
JS
17.0
16.0
16.0
0.58
0.118
16.33
-0.95
-1.27
JY
- -
K
19.0
19.0
22.0
1.73
0.354
20.00
0.32
0.00
KE
•
KT
•
KX
21.0
21.0
21.0
0.00
0.000
21.00
0.66
0.35
L
19.0
20.0
21.0
1.00
0.236
20.00
0.32
0.00
LlF
• -
LG
•
LL
•
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
s Below control limit
-------
f(
13/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
]|
Strontium-89
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LR
• -
LT
9.0
9.0
11.0
1.15
0.236
9.67
-3.26
-3.58 U
M
26.0
25.0
28.0
1.53
0.354
26.33
2.51
2.19
MA
•
MF
•
MP
*
MQ
19.0
20.0
20.0
0.58
0.118
19.67
0.20
-0.12
MV
•
MY
•
N
21.0
21.0
20.0
0.58
0.118
20.67
0.55
0.23
NA
•
NH
•
NI
•
NJ
17.0
18.0
18.0
0.58
0.118
17.67
-0.49
-0.81
NK
•
NO
12.0
13.0
14.0
1.00
0.236
13.00
-2.11
-2.42
NT
21.0
21.0
22.0
0.58
0.118
21.33
0.78
0.46
O
•
OF
•
OS
•
OX
•
OY
•
OZ
•
P
•
PA
•
PB
20.0
20.0
20.0
0.00
0.000
20.00
0.32
0.00
PG
•
PI
•
PM
•
PQ
•
PR
•
PV
17.0
20.0
28.0
5.69
1.570
21.67
0.89
0.58
PW
Q
18.0
20.0
22.0
2.00
0.473
20.00
0.32
0.00
QC
QJ
•
QP
•
QQ
•
QT
~
QU
16.0
12.0
13.0
2.08
0.473
13.67
-1.88
-2.19
QW
18.0
12.0
14.0
3.06
0.709
14.67
-1.53
-1.85
QX
•
QY
•
QZ
20.0
21.0
23.0
1.53
0.354
21.33
0.78
0.46
RD
~
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
1 0 s
Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
v-
-y
-------
((
^
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
14/44
f
Strontium-89
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RE
•
RF
•
RG
•
RJ
• ¦
RK
6.0
6.0
5.0
0.58
0.118
5.67
-4.65
-4.97
X
RP
• -
RR
21.0
21.0
20.0
0.58
0.118
20.67
0.55
0.23
RV
19.0
20.0
20.0
0.58
0.118
19.67
0.20
-0.12
RZ
-
• *
S
19.0
18.0
18.0
0.58
0.118
18.33
-0.26
-0.58
sc
17.0
21.0
21.0
2.31
0.473
19.67
0.20
-0.12
SD
20.0
17.0
15.0
2.52
0.591
17.33
-0.61
-0.92
SF
18.0
17.0
19.0
1.00
0.236
18.00
-0.38
-0.69
SI
16.0
12.0
13.0
2.08
0.473
13.67
-1.88
-2.19
SL
•
SM
20.0
22.0
21.0
1.00
0.236
21.00
0.66
0.35
SN
•
SO
•
SR
•
ss
16.0
20.0
17.0
2.08
0.473
17.67
-0.49
-0.81
ST
24.0
21.0
27.0
3.00
0.709
24.00
1.70
1.39
sx
•
sz
•
T
17.0
17.0
19.0
1.15
0.236
17.67
-0.49
-0.81
TD
16.0
16.0
15.0
0.58
0.118
15.67
-1.18
-1.50
TE
18.0
21.0
17.0
2.08
0.473
18.67
-0.15
-0.46
TH
•
TI
18.0
15.0
16.0
1.53
0.354
16.33
-0.95
-1.27
TL
20.0
21.0
24.0
2.08
0.473
21.67
0.89
0.58
TN
«
TQ
18.0
21.0
18.0
1.73
0.354
19.00
-0.03
-0.35
TS
10.0
11.0
11.0
0.58
0.118
10.67
-2.92
-3.23
TY
•
U
17.0
17.0
16.0
0.58
0.118
16.67
-0.84
-1.15
UA
*
UE
22.0
21.0
20.0
1.00
0.236
21.00
0.66
0.35
UG
•
UK
•
UN
22.0
19.0
21.0
1.53
0.354
20.67
0.55
0.23
UP
17.0
17.0
16.0
0.58
0.118
16.67
-0.84
-1.15
UQ
•
UW
22.0
21.0
22.0
0.58
0.118
21.67
0.89
0.58
UY
•
VA
•
VC
•
• S
No data submitted
TAG SYMBOLS
1T = Above control limit
0 S
^
Insufficient data
X -
Determined to be an outlier
II s Below control limit
-------
(r
15/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Strontium-89
Lab
Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
VG
VI
VJ
VM
VN
vo
VQ
VT
VU
W
WE
WF
X
Z
15.0
13.0
19.0
6.0
17.0
16.0
8.0
19.0
8.0
19.0
16.0
11.0
18.0
7.0
15.0
0.58
2.52
0.58
1.00
2.00
0.118
0.591
0.118
0.236
0.473
15.67
10.67
18.67
7.00
17.00
-1.18
-2.92
"015
-4.19
-0.72
-1.50
-3.23
-0.46
-4.50
-1.04
x
Data sorted by Laboratory Average
Average
Tax
Lab
Average
Tag
Lab
Average
Tag
Lab
5.67
X
RK
17.67
CQ
20.33
BA
6.33
X
JJti
17.67
CO
20.33
AF
7.00
X
WF
17.67
BC
20.67
UN
9.67
11
LT
18.00
SF
20.67
RR
10.67
w
VI
18.33
S
20.67
N
10.67
li
TS
18.33
DT
20.67
CJ
12.00
DG
18.67
W
20.67
BH
13.00
NO
18.67
TE
20.67
AZ
13.67
SI
18.67
AW
20.67
AK
13.67
QU
18.67
AJ
21.00
UE
14.00
CK
19.00
TQ
21.00
SM
14.67
QW
19.00
BM
21.00
KX
15.67
VG
19.00
A
21.00
DZ
15.67
TD
19.67
SC
21.33
QZ
16.33
TI
19.67
RV
21.33
NT
16.33
JS
19.67
MQ
21.67
UW
16.33
CX
19.67
E
21.67
TL
16.67
UP
20.00
Q
21.67
PV
16.67
U
20.00
PB
21.67
HP
17.00
X
20.00
L
22.00
I
17.00
HK
20.00
K
22.00
AU
17.00
CA
20.00
GQ
22.33
EB
17.33
SD
20.00
DO
22.33
AE
17.33
IC
20.33
J
22.67
CG
17.67
T
20.33
DE
23.33
C
17.67
ss
20.33
DD
23.33
AL
17.67
NJ
20.33
BO
24.00
ST
17.67
CS
20.33
BL
24.00
FU
• = No data submitted
TAG SYMBOLS
It
= Above control limit
0 = Insufficient data
x = Determined to be an outlier
u
= Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
16/44
Strontium-89
Average Tag
Data sorted by Laboratory Average
Lab Average Tag Lab
Average
Tag
Lab
25.00
EL
25.67
CP
26.33
M
responding labs
Frequency distribution
10-
0—r
-6
T- Ifl-
"j—
-4 -2 0 +2 n 7T
Normalized deviation of the mean from the known value
+6
% responding labs
Frequency distribution
10-
Normalized deviation of the mean from the grand average
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
U = Below control limit
-------
o
/¦
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
17/44
Strontium-90 Statistical Summary 194 Participants
The known value of this nuclide is 15.0 pCi/1 with an expected precision of 5.0; the control limits
are 6.3 to 23.7; the warning regions are 6.3 to 9.2 and 20.8 to 23.7
83(42.8 %) Within all limits
100(51.5 %) Failed to respond
3(1.5 %) Outliers
2(1.0 %) Out of control
but not an outlier
6(3.1 %) In warning zone
but within control
Statistic Respondents Non-outliers
Mean
14.63
Grand Avg 14.16
Std. Dev.
3.77
2.74
Variance
14.21
7.48
% Coef. of Var.
25.76
19.31
% deviation of mean from known value
-2.43
-5.57
Norm. dev. of mean from known value
-0.10
-0.31
Median
14.33
14.00
% deviation of median from known value
-4.44
-6.67
Norm. dev. of median from known value
-0.18
-0.37
73(77.7 %) Within 1 norm. S.D.
of known value
5(5.3 %) More than 3 norm. S.D.
-------
(?
18/44
\
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
/
Strontium-90
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
14.0
13.0
14.0
0.58
0.118
13.67
-0.17
-0.46
AE
11.0
15.0
15.0
2.31
0.473
13.67
-0.17
-0.46
AF
14.0
14.0
14.0
0.00
0.000
14.00
-0.06
-0.35
AH
•
AI
•
AJ
13.0
15.0
15.0
1.15
0.236
14.33
0.06
-0.23
AK
15.0
16.0
15.0
0.58
0.118
15.33
0.40
0.12
AL
13.0
13.0
13.0
0.00
0.000
13.00
-0.40
-0.69
AO
•
AP
•
AR
•
AU
14.0
13.0
14.0
0.58
0.118
13.67
-0.17
-0.46
AW
17.0
18.0
17.0
0.58
0.118
17.33
1.10
0.81
AZ
14.0
15.0
15.0
0.58
0.118
14.67
0.17
-0.12
BA
13.0
14.0
14.0
0.58
0.118
13.67
-0.17
-0.46
BB
12.0
13.0
12.0
0.58
0.118
12.33
-0.63
-0.92
BC
14.0
14.0
13.0
0.58
0.118
13.67
-0.17
-0.46
BG
4
BH
14.0
14.0
15.0
0.58
0.118
14.33
0.06
-0.23
BK
•
BL
15.0
13.0
18.0
2.52
0.591
15.33
0.40
0.12
BM
15.0
14.0
15.0
0.58
0.118
14.67
0.17
-0.12
BN
•
BO
14.0
14.0
14.0
0.00
0.000
14.00
-0.06
-0.35
BS
•
BW
~
C
14.0
15.0
15.0
0.58
0.118
14.67
0.17
-0.12
CA
14.0
12.0
12.0
1.15
0.236
12.67
-0.52
-0.81
CE
15.0
15.0
15.0
0.00
0.000
15.00
0.29
0.00
CG
15.0
15.0
12.0
1.73
0.354
14.00
-0.06
-0.35
CJ
14.0
15.0
15.0
0.58
0.118
14.67
0.17
-0.12
CK
22.0
18.0
13.0
4.51
1.120
17.67
1.21
0.92
CM
•
CO
17.0
17.0
16.0
0.58
0.118
16.67
0.87
0.58
CP
18.0
26.0
25.0
4.36
0.945
23.00
3.06
2.77
CQ
13.0
13.0
13.0
0.00
0.000
13.00
-0.40
-0.69
CS
16.0
15.0
16.0
0.58
0.118
15.67
0.52
0.23
CX
14.0
15.0
16.0
1.00
0.236
15.00
0.29
0.00
D
•
DB
•
DD
14.0
15.0
15.0
0.58
0.118
14.67
0.17
-0.12
DE
16.0
16.0
16.0
0.00
0.000
16.00
0.64
0.35
DG
12.0
11.0
10.0
1.00
0.236
11.00
-1.10
-1.39
DJ
•
DL
•
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
[0S
Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
-y
-------
ff
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
19/44
Strontium-90
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
•
DO
13.0
12.0
14.0
1.00
0.236
13.00
-0.40
-0.69
DS
••
DT
12.0
15.0
15.0
1.73
0.354
14.00
-0.06
-0.35
DZ
15.0
16.0
17.0
1.00
0.236
16.00
0.64
0.35
E
17.0
16.0
16.0
0.58
0.118
16.33
0.75
0.46
EB
14.0
11.0
12.0
1.53
0.354
12.33
-0.63
-0.92
EL
17.0
16.0
15.0
1.00
0.236
16.00
0.64
0.35
EO
•
ER
•
EV
•
EX
•
FF
•
FJ
•
FL
•
FN
•
FU
14.0
12.0
13.0
1.00
0.236
13.00
-0.40
-0.69
FZ
•
GE
•
GI
•
GQ
18.0
19.0
20.0
1.00
0.236
19.00
1.67
1.39
GT
•
GZ
*
m
0
HK
13.0
13.0
13.0
0.00
0.000
13.00
-0.40
-0.69
HL
•
HP
10.0
16.0
14.0
3.06
0.709
13.33
-0.29
-0.58
I
13.0
13.0
14.0
0.58
0.118
13.33
-0.29
-0.58
IC
15.0
14.0
15.0
0.58
0.118
14.67
0.17
-0.12
ID
•
J
15.0
15.0
15.0
0.00
0.000
15.00
0.29
0.00
JE
6.0
5.0
6.0
0.58
0.118
5.67
-2.94
-3.23 U
JG
•
JN
•
JQ
m
JS
12.0
12.0
12.0
0.00
0.000
12.00
-0.75
-1.04
JY
17.0
20.0
20.0
1.73
0.354
19.00
1.67
1.39
K
13.0
12.0
12.0
0.58
0.118
12.33
-0.63
-0.92
KE
•
KT
•
KX
13.0
14.0
14.0
0.58
0.118
13.67
-0.17
-0.46
L
14.0
14.0
15.0
0.58
0.118
14.33
0.06
-0.23
LF
•
LG
•
LL
•
• =
No data submitted
TAG SYMBOLS
It s Above control limit
l0s
Insufficient data
x =
Determined to be an outlier
li = Below control limit
J
-------
f(
A.
20/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Strontium-90
X
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LR
•
LT
9.0
8.0
9.0
0.58
0.118
8.67
-1.90
-2.19
M
8.0
8.0
7.0
0.58
0.118
7.67
-2.25
-2.54
MA
•
MF
•
MP
•
MQ
14.0
14.0
14.0
0.00
0.000
14.00
-0.06
-0.35
MV
•
MY
•
N
14.0
14.0
15.0
0.58
0.118
14.33
0.06
-0.23
NA
•
NH
•
NI
~
NJ
12.0
13.0
13.0
0.58
0.118
12.67
-0.52
-0.81
NK
•
NO
25.0
26.0
27.0
1.00
0.236
26.00
4.10
3.81 x
NT
15.0
15.0
16.0
0.58
0.118
15.33
0.40
0.12
O
•
OF
•
OS
~
OX
•
OY
•
OZ
•
P
»
PA
•
PB
15.0
15.0
15.0
0.00
0.000
15.00
0.29
0.00
PG
•
PI
•
PM
•
PQ
•
PR
•
PV
27.0
31.0
38.0
5.57
1.570
32.00
6.18
5.89 x
PW
•
Q
13.0
14.0
15.0
1.00
0.236
14.00
-0.06
-0.35
QC
•
QJ
12.0
13.0
14.0
1.00
0.236
13.00
-0.40
-0.69
QP
•
QQ
•
QT
QU
5.0
6.0
6.0
0.58
0.118
5.67
-2.94
-3.23 U
QW
14.0
11.0
13.0
1.53
0.354
12.67
-0.52
-0.81
QX
•
QY
•
QZ
14.0
14.0
13.0
0.58
0.118
13.67
-0.17
-0.46
RD
~
• =
No data submitted
TAG SYMBOLS
It s Above control limit
1 0 =
V
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
J)
-------
((
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
21/44
r .
Strontium-90
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RE
BF
•
EG
•
RJ
RK
11.0
9.0
10.0
1.00
0.236
10.00
-1.44
-1.73
HP
•'
RR
14.0
14.0
14.0
0.00
0.000
14.00
-0.06
-0.35
RV
16.0
16.0
16.0
0.00
0.000
16.00
0.64
0.35
RZ
-
•
S
15.0
15.0
15.0
0.00
0.000
15.00
0.29
0.00
sc
15.0
16.0
16.0
0.58
0.118
15.67
0.52
0.23
SD
15.0
14.0
16.0
1.00
0.236
15.00
0.29
0.00
SF
14.0
12.0
13.0
1.00
0.236
13.00
-0.40
-0.69
SI
15.0
150
15.0
0.00
0.000
15.00
0.29
0.00
SL
SM
20.0
20.0
24.0
2.31
0.473
21.33
2.48
2.19
SN
>
SO
•
SR
•
ss
16.0
15.0
15.0
0.58
0.118
15.33
0.40
0.12
ST
14.0
15.0
13.0
1.00
0.236
14.00
-0.06
-0.35
sx
•
sz
18.0
19.0
20.0
1.00
0.236
19.00
1.67
1.39
T
12.0
11.0
13.0
1.00
0.236
12.00
-0.75
-1.04
TD
11.0
12.0
13.0
1.00
0.236
12.00
-0.75
-1.04
TE
18.0
11.0
15.0
3.51
0.827
14.67
0.17
-0.12
TH
15.0
17.0
16.0
1.00
0.236
16.00
0.64
0.35
TI
14.0
16.0
14.0
1.15
0.236
14.67
0.17
-0.12
TL
16.0
17.0
18.0
1.00
0.236
17.00
0.98
0.69
TN
•
TQ
16.0
15.0
16.0
0.58
0.118
15.67
0.52
0.23
TS
8.0
8.0
8.0
0.00
0.000
8.00
-2.14
-2.42
TY
•
U
14.0
16.0
16.0
1.15
0.236
15.33
0.40
0.12
UA
•.s
*
UE
13.0
13.0
15.0
1.15
0.236
13.67
-0.17
-0.46
UG
•
UK
9
UN
15.0
16.0
14.0
1.00
0.236
15.00
0.29
0.00
UP
14.0
12.0
13.0
1.00
0.236
13.00
-0.40
-0.69
UQ
*
uw
15.0
14.0
14.0
0.58
0.118
14.33
006
-0.23
UY
9
VA
•
VC
•
• =
No data submitted
TAG SYMBOLS
It s Above control limit
0 =
v-
Insufficient data
x =
Determined to be em outlier
U = Below control limit
}J
-------
22/44
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
^
Stronti um-90
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3 Sigma
(R + SR)
Average
(grand-avg) (known) Tag
VG
10.0
10.0
11.0 0.58
0.118
10.33
-1.33
-1.62
VI
13.0
11.0
12.0 1.00
0.236
12.00
-0.75
-1.04
VJ
•
VM
• •
VN
•
vo
30.0
29.0
27.0 * 1.53
0.354
28.67
5.02
4.73
X
VQ
•
VT
•
VU
•
W
13.0
13.0
14.0 0.58
0.118
13.33
-0.29
-0.58
WE
•
WF
20.0
21.0
22.0 1.00
0.236
21.00
2.37
2.08
X
Z
12.0
15.0
14.0 1.53
0.354
13.67
-0.17
-0.46
•
Data sorted by Laboratory Averag
fe
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.67
u
QU
13.33
HP
14.67
C
5.67
11
eJE
13.67
X
14.67
BM
7.67
M
13.67
UE
14.67
AZ
8.00
TS
13.67
QZ
15.00
UN
8.67
LT
13.67
KX
15.00
SI
10.00
RK
13.67
BC
15.00
SD
10.33
VG
13.67
BA
15.00
S
11.00
DG
13.67
AU
15.00
PB
12.00
VI
13.67
AE
15.00
J
12.00
TD
13.67
A
15.00
CX
12.00
T
14.00
ST
15.00
CE
12.00
JS
14.00
RR
15.33
U
12.33
K
14.00
Q
15.33
SS
12.33
EB
14.00
MQ
15.33
NT
12.33
BB
14.00
DT
15.33
BL
12.67
QW
14.00
CG
15.33
AK
12.67
NJ
14.00
BO
15.67
TQ
12.67
CA
14.00
AF
15.67
SC
13.00
UP
14.33
UW
15.67
CS
13.00
SF
14.33
N
16.00
TH
13.00
QJ
14.33
L
16.00
RV
13.00
HK
14.33
BH
16.00
EL
13.00
FU
14.33
AJ
16.00
DZ
13.00
DO
14.67
TI
16.00
DE
13.00
CQ
14.67
TE
16.33
E
13.00
AL
14.67
IC
16.67
CO
13.33
W
14.67
DD
17.00
TL
13.33
I
14.67
CJ
17.33
AW
• = No data submitted
TAG SYMBOLS
It = Above control limit
0 - Insufficient data
x = Determined to be an outlier
= Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
23/44
Strontium-90
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
17.67
CK
19.00
GQ
23.00
CP
19.00
SZ
21.00
WF
26.00
X
NO
19.00
JY
21.33
SM
28.67
X
VO
32.00
X
PV
% responding labs
Frequency distribution
10-
% responding labs
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
104
0
I , ¦
Jit
—r-
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
JJ- = Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
24/44
Cobalt-60 Statistical Summary 194 Participants
The known value of this nuclide is 29.0 pCi/1 with an expected precision of 5.0; the control limits
are 20.3 to 37.7; the warning regions are 20.3 to 23.2 and 34.8 to 37.7
59(30.4 %) Failed to respond
5(2.6 %) Outliers
26(64.9 %) Within all limits
4(2.1 %) In warning zone
but within control
Statistic
Respondents
Non-outliers
Mean
30.34
Grand Avg 29.39
Std. Dev.
8.73
2.24
Variance
76.17
5.00
% Coef. of Var.
28.77
7.61
% deviation of mean from known value
4.61
1.36
Norm. dev. of mean from known value
0.15
0.18
Median
29.33
29.33
% deviation of median from known value
1.15
1.15
Norm. dev. of median from known value
0.04
0.15
5(3.7 %) More than 3 norm. S.D.
4(3.0 %) Between 2 and 3 norm. S.D. •
. 105(77.8 %) Within 1 norm. S.D.
t
of known value
21(15.6 %) Between 1 and 2 norm. S.D.
-------
25 / 44 CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
27.0
25.0
27.0
1.15
0.236
26.33
-1.06
-0.92
AE
31.0
32.0
31.0
0.58
0.118
31.33
0.67
0.81
AF
29.0
29.0
31.0
1.15
0.236
29.67
0.09
0.23
AH
27.0
26.0
27.0
0.58
0.118
26.67
-0.95
-0.81
AI
25.0
25.0
24.0
0.58
0.118
24.67
-1.64
-1.50
AJ
30.0
28.0
26.0
2.00
0.473
28.00
-0.48
-0.35
AK
30.0
29.0
30.0
0.58
0.118
29.67
0.09
0.23
AL
29.0
21.0
30.0
4.93
1.120
26.67
-0.95
-0.81
AO
AP
31.0
30.0
30.0
0.58
0.118
30.33
0.33
0.46
AR
•
AU
30.0
28.0
28.0
1.15
0.236
28.67
-0.25
-0.12
AW
29.0
29.0
28.0
0.58
0.118
28.67
-0.25
-0.12
AZ
26.0
20.0
26.0
3.46
0.709
24.00
-1.87
-1.73
BA
36.0
32.0
34.0
2.00
0.473
34.00
1.60
1.73
BB
31.0
33.0
32.0
1.00
0.236
32.00
0.90
1.04
BC
29.0
28.0
28.0
0.58
0.118
28.33
-0.37
-0.23
BG
•
BH
31.0
30.0
27.0
2.08
0.473
29.33
-0.02
0.12
BK
32.0
32.0
32.0
0.00
0.000
32.00
0.90
1.04
BL
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
BM
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
BN
29.0
28.0
27.0
1.00
0.236
28.00
-0.48
-0.35
BO
31.0
31.0
27.0
2.31
0.473
29.67
0.09
0.23
BS
•
BW
25.0
42.0
20.0
11.53
4.046
29.00
-0.14
0.00
C
27.0
26.0
26.0
0.58
0.118
26.33
-1.06
-0.92
CA
30.0
27.0
30.0
1.73
0.354
29.00
-0.14
0.00
CE
32.0
32.0
34.0
1.15
0.236
32.67
1.13
1.27
CG
•
OJ
34.0
31.0
30.0
2.08
0.473
31.67
0.79
0.92
¦JK
32.0
28.0
28.0
2.31
0.473
29.33
-0.02
0.12
CM
27.0
28.0
29.0
1.00
0.236
28.00
-0.48
-0.35
CO
27.0
30.0
29.0
1.53
0.354
28.67
-0.25
-0.12
CP
32.0
30.0
30.0
1.15
0.236
30.67
0.44
0.58
CQ
31.0
32.0
33.0
1.00
0.236
32.00
0.90
1.04
CS
29.0
30.0
27.0
1.53
0.354
28.67
-0.25
-0.12
CX
rv
31.0
30.0
31.0
0.58
0.118
30.67
0.44
0.58
\j
DB
•
DD
32.0
30.0
29.0
1.53
0.354
30.33
0.33
0.46
DE
30.0
30.0
30.0
0.00
0.000
30.00
0.21
0.35
DG
31.0
28.0
31.0
1.73
0.354
30.00
0.21
0.35
DJ
•
DL
31.0
31.0
30.0
0.58
0.118
30.67
0.44
0.58
! hi m
• IS
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
il = Below control limit
^ V
-------
((
^
>¦
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
26/44
Cobalt-60
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
30.0
30.0
28.0
1.15
0.236
29.33
-0.02
0.12
DO
37.0
32.0
33.0
2.65
0.591
34.00
1.60
1.73
DS
•
DT
28.0
31.0
28.0
1.73
0.354
29.00
-0.14
0.00
DZ
25.0
24.0
26.0
1.00
0.236
25.00
-1.52
-1.39
E
30.0
30.0
30.0
0.00
0.000
30.00
0.21
0.35
EB
28.0
28.0
28.0
0.00
0.000
28.00
-0.48
-0.35
EL
28.0
29.0
28.0
0.58
0.118
28.33
-0.37
-0.23
EO
•
ER
~
EV
•
EX
28.0
30.0
32.0
2.00
0.473
30.00
0.21
0.35
FF
•
FJ
31.0
29.0
30.0
1.00
0.236
30.00
0.21
0.35
FL
30.0
30.0
29.0
0.58
0.118
29.67
0.09
0.23
FN
•
FU
30.0
29.0
28.0
1.00
0.236
29.00
-0.14
0.00
FZ
38.0
33.0
32.0
3.21
0.709
34.33
1.71
1.85
GE
32.0
30.0
31.0
1.00
0.236
31.00
0.56
0.69
GI
29.0
30.0
29.0
0.58
0.118
29.33
-0.02
0.12
GQ
30.0 '
30.0
30.0
0.00
0.000
30.00
0.21
0.35
GT
•
GZ
•
HI
22.0
21.0
23.0
1.00
0.236
22.00
-2.56
-2.42
HK
29.0
31.0
29.0
1.15
0.236
29.67
0.09
0.23
HL
28.0
29.0
28.0
0.58
0.118
28.33
-0.37
-0.23
HP
31.0
30.0
29.0
1.00
0.236
30.00
0.21
0.35
I
31.0
30.0
26.0
2.65
0.591
29.00
-0.14
0.00
IC
32.0
31.0
31.0
0.58
0.118
31.33
0.67
0.81
ED
•
J
29.0
30.0
29.0
0.58
0.118
29.33
-0.02
0.12
JE
29.0
30.0
29.0
0.58
0.118
29.33
-0.02
0.12
JG
27.0
29.0
25.0
2.00
0.473
27.00
-0.83
-0.69
JN
•
JQ
•
JS
30.0
30.0
31.0
0.58
0.118
30.33
0.33
0.46
JY
32.0
41.0
37.0
4.51
1.120
36.67
2.52
2.66
K
26.0
25.0
28.0
1.53
0.354
26.33
-1.06
-0.92
KE
•
KT
•
KX
30.0
30.0
29.0
0.58
0.118
29.67
0.09
0.23
L
30.0
28.0
30.0
1.15
0.236
29.33
-0.02
0.12
LF
29.0
30.0
30.0
0.58
0.118
29.67
0.09
0.23
LG
•
LL
•
• =
No data submitted
TAG SYMBOLS
ft a Above control limit
[0S
Insufficient data
x =
Determined to be an outlier
= Below control limit
y
-------
(c
27/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
A 11 -
Cobalt-60
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LR
32.0
30.0
29.0
1.53
0.354
30.33
0.33
0.46
LT
29.0
29.0
30.0
0.58
0.118
29.33
-0.02
0.12
M
30.0
29.0
30.0
0.58
0.118
29.67
0.09
0.23
MA
29.0
29.0
28.0
0.58
0.118
28.67
-0.25
-0.12
MF
•
MP
125.0
121.0
122.0
2.08
0.473
122.67
32.31
32.45
X
MQ
25.0
27.0
26.0
1.00
0.236
26.00
-1.18
-1.04
MV
18.0
17.0
17.0
0.58
0.118
17.33
-4.18
-4.04
X
MY
•
N
31.0
29.0
32.0
1.53
0.354
30.67
0.44
0.58
NA
•
NH
28.0
28.0
27.0
0.58
0.118
27.67
-0.60
-0.46
NI
#
NJ
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
NK
28.0
32.0
31.0
2.08
0.473
30.33
0.33
0.46
NO
32.0
33.0
33.0
0.58
0.118
32.67
1.13
1.27
NT
9
O
33.0
32.0
33.0
0.58
0.118
32.67
1.13
1.27
OF
•
OS
*
OX
•
OY
•
OZ
54.0
54.0
54.0
0.00
0.000
54.00
8.52
8.66
X
P
42.0
41.0
42.0
0.58
0.118
41.67
4.25
4.39
X
PA
•
PB
30.0
30.0
30.0
0.00
0.000
30.00
0.21
0.35
PG
•
PI
29.0
29.0
28.0
0.58
0.118
28.67
-0.25
-0.12
PM
31.0
33.0
33.0
1.15
0.236
32.33
1.02
1.15
PQ
30.0
31.0
30.0
0.58
0.118
30.33
0.33
0.46
PR
•
PV
32.0
35.0
31.0
2.08
0.473
32.67
1.13
1.27
PW
28.0
27.0
28.0
0.58
0.118
27.67
-0.60
-0.46
Q
28.0
29.0
28.0
0.58
0.118
28.33
-0.37
-0.23
QC
•
QJ
31.0
29.0
30.0
1.00
0.236
30.00
0.21
0.35
QP
29.0
28.0
31.0
1.53
0.354
29.33
-0.02
0.12
QQ
•
QT
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
QU
28.0
29.0
30.0
1.00
0.236
29.00
-0.14
0.00
QW
27.0
29.0
30.0
1.53
0.354
28.67
-0.25
-0.12
QX
35.0
37.0
35.0
1.15
0.236
35.67
2.17
2.31
QY
•
QZ
28.0
28.0
28.0
0.00
0.000
28.00
-0.48
-0.35
RD
#
• s No data submitted
TAG SYMBOLS
If = Above control limit
0 = Insufficient data
X -
Determined to be an outlier
11 s Below control limit
.
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
28/44
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RE
•
RF
26.0
26.0
25.0
0.58
0.118
25.67
-1.29
-1.15
RG
•
RJ
•
RK
26.0
26.0
26.0
0.00
0.000
26.00
-1.18
-1.04
RP
•
RR
30.0
31.0
31.0
0.58
0.118
30.67
0.44
0.58
RV
23.0
28.0
30.0
3.61
0.827
27.00
-0.83
-0.69
RZ
31.0
31.0
31.0
0.00
0.000
31.00
0.56
0.69
S
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
sc
27.0
30.0
27.0
1.73
0.354
28.00
-0.48
-0.35
SD
32.0
29.0
30.0
1.53
0.354
30.33
0.33
0.46
SF
31.0
30.0
34.0
2.08
0.473
31.67
0.79
0.92
SI
31.0
34.0
31.0
1.73
0.354
32.00
0.90
1.04
SL
#
SM
27.0
32.0
29.0
2.52
0.591
29.33
-0.02
0.12
SN
25.0
28.0
25.0
1.73
0.354
26.00
-1.18
-1.04
SO
- «
SR
24.0
27.0
29.0
2.52
0.591
26.67
-0.95
-0.81
ss
30.0
28.0
30.0
1.15
0.236
29.33
-0.02
0.12
ST
27.0
28.0
27.0
0.58
0.118
27.33
-0.71
-0.58
sx
31.0
29.0
31.0
1.15
0.236
30.33
0.33
0.46
sz
28.0
28.0
28.0
0.00
0.000
28.00
-0.48
-0.35
T
28.0
26.0
29.0
1.53
0.354
27.67
-0.60
-0.46
TD
29.0
31.0
36.0
3.61
0.827
32.00
0.90
1.04
TE
28.0
29.0
27.0
1.00
0.236
28.00
-0.48
-0.35
TH
34.0
32.0
29.0
2.52
0.591
31.67
0.79
0.92
TI
29.0
30.0
29.0
0.58
0.118
29.33
-0.02
0.12
TL
25.0
26.0
28.0
1.53
0.354
26.33
-1.06
-0.92
TN
•
TQ
27.0
27.0
28.0
0.58
0.118
27.33
-0.71
-0.58
TS
33.0
30.0
31.0
1.53
0.354
31.33
0.67
0.81
TY
•
U
30.0
30.0
28.0
1.15
0.236
29.33
-0.02
0.12
UA
•
UE
29.0
29.0
29.0
0.00
0.000
29.00
-0.14
0.00
UG
•
UK
•
UN
32.0
25.0
24.0
4.36
0.945
27.00
-0.83
-0.69
UP
28.0
32.0
29.0
2.08
0.473
29.67
0.09
0.23
UQ
•
UW
29.0
27.0
30.0
1.53
0.354
28.67
-0.25
-0.12
UY
34.0
30.0
30.0
2.31
0.473
31.33
0.67
0.81
VA
32.0
30.0
29.0
1.53
0.354
30.33
0.33
0.46
VC
•
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
11 == Above control limit
11 = Below control limit
-------
(,
29/44
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
Cobalt-60
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VG
30.0
29.0
30.0 0.58
0.118
29.67 0.09
0.23
VI
29.0
29.0
29.0 0.00
0.000
29.00 -0.14
0.00
VJ
•
VM
42.0
33.0
31.0 5.86
1.570
35.33 2.06
2.19
VN
-
•
vo
25.0
27.0
25.0 1.15
0.236
25.67 -1.29
-1.15
VQ
•
VT
•
VU
•
W
31.0
28.0
27.0 2.08
0.473
28.67 -0.25
-0.12
WE
•
WF
38.0
40.0
37.0 1.53
0.354
38.33 3.10
3.23
X
X
Z
30.0
31.0
30.0 0.58
0.118
30.33 0.33
0.46
•
Data sorted by Laboratory Averaj
[e
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
17.33
X
MV
28.00
QZ
29.00
BW
22.00
HI
28.00
EB
29.00
BM
24.00
AZ
28.00
CM
29.00
BL
24.67
AI
28.00
BN
29.33
U
25.00
DZ
28.00
AJ
29.33
TI
25.67
VO
28.33
Q
29.33
SS
25.67
RF
28.33
HL
29.33
SM
26.00
SN
28.33
EL
29.33
QP
26.00
RK
28.33
BC
29.33
LT
26.00
MQ
28.67
W
29.33
L
26.33
TL
28.67
UW
29.33
JE
26.33
K
28.67
QW
29.33
J
26.33
C
28.67
PI
29.33
GI
26.33
A
28.67
MA
29.33
DM
26.67
SR
28.67
cs
29.33
CK
26.67
AL
28.67
CO
29.33
BH
26.67
AH
28.67
AW
29.67
VG
27.00
UN
28.67
AU
29.67
UP
27.00
RV
29.00
VI
29.67
M
27.00
JG
29.00
UE
29.67
LF
27.33
TQ
29.00
s
29.67
KX
27.33
ST
29.00
QU
29.67
HK
27.67
T
29.00
QT
29.67
FL
27.67
PW
29.00
NJ
29.67
BO
27.67
NH
29.00
I
29.67
AK
28.00
TE
29.00
FU
29.67
AF
28.00
SZ
29.00
DT
30.00
QJ
28.00
sc
29.00
CA
30.00
PB
• = No data submitted
TAG SYMBOLS
IT = Above control limit
0 s Insufficient data
^
x - Determined to be an outlier
li = Below control limit
yj
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
30/44
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
30.00
HP
30.67
KR
32.00
BK
30.00
GQ
30.67
N
32.00
BB
30.00
FJ
30.67
DL
32.33
PM
30.00
EX
30.67
CX
32.67
PV
30.00
E
30.67
CP
32.67
O
30.00
DG
31.00
RZ
32.67
NO
30.00
DE
31.00
GE
32.67
CE
30.33
X
31.33
UY
34.00
DO
30.33
VA
31.33
TS
34.00
BA
30.33
sx
31.33
IC
34.33
FZ
30.33
SD
31.33
AE
35.33
VM
30.33
PQ
31.67
TH
35.67
QX
30.33
NK
31.67
SF
36.67
JY
30.33
LR
31.67
CJ
38.33
X
WF
30.33
JS
32.00
TD
41.67
X
P
30.33
DD
32.00
SI
54.00
X :
OZ
30.33
AP
32.00
CQ
122.67
X
MP
% responding labs Frequency distribution
mI
10-
I I T 1 I ————y——" i ——— ,¦ 1—— 1 I
-6 -4 -2 0+2+4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10-
-i 1 -t 1—- 1— "T""T""T" " T r" 1 r2
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS 11 s Above control limit
0 s Insufficient data x = Determined to be an outlier JJ- = Below control limit
y-
-------
^
(
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
31/44
Cesium-134 Statistical Summary 194 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 5.0; the control limits
are 11.3 to 28.7; the warning regions are 11.3 to 14.2 and 25.8 to 28.7
59(30.4 %) Failed to respond
126(64.9 %) Within all limits
3(1.5 %) Outliers *
2(1.0 %) Out of control
but not an outlier
4(2.1 %) In warning zone
but wlthki control
Statistic Respondents Non-outliers
Mean
20.26
Grand Avg 18.33
Std. Dev.
17.58
2.38
Variance
309.06
5.68
% Coef. of Var.
86.76
13.00
% deviation of mean from known value
1.31
-8.35
Norm. dev. of mean from known value
0.01
-0.70
Median
18.33
18.17
% deviation of median from known value
-8.33
-9.17
Norm. dev. of median from known value
-0.09
-0.77
97(71.9 %) Within 1 norm. S.D.
of known value
6(4.4 %) More than 3 norm. S.D.
3(2.2 %) Between 2 and 3 norm. S.D.
-------
32/44 CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
16.0
16.0
16.0
0.00
0.000
16.00
-0.81
-1.39
AE
16.0
18.0
17.0
1.00
0.236
17.00
-0.46
-1.04
AF
18.0
18.0
18.0
0.00
0.000
18.00
-0.11
-0.69
AH
17.0
17.0
17.0
0.00
0.000
17.00
-0.46
-1.04
At
16.0
17.0
16.0
0.58
0.118
16.33
-0.69
-1.27
AJ
14.0
17.0
20.0
3.00
0.709
17.00
-0.46
-1.04
AK
19.0
18.0
20.0
1.00
0.236
19.00
0.23
-0.35
AL
13.0
20.0
21.0
4.36
0.945
18.00
-0.11
-0.69
AO
•
AP
20.0
21.0
22.0
1.00
0.236
21.00
0.92
0.35
AR
•
AU
20.0
18.0
18.0
1.15
0.236
18.67
0.12
-0.46
AW
19.0
17.0
17.0
1.15
0.236
17.67
-0.23
-0.81
AZ
22.0
19.0
21.0
1.53
0.354
20.67
0.81
0.23
BA
20.0
21.0
20.0
0.58
0.118
20.33
0.69
0.12
BB
20.0
19.0
21.0
1.00
0.236
20.00
0.58
0.00
BC
18.0
17.0
18.0
0.58
0.118
17.67
-0.23
-0.81
BG
•
BH
16.0
17.0
16.0
0.58
0.118
16.33
-0.69
-1.27
BK
21.0
21.0
21.0
0.00
0.000
21.00
0.92
0.35
BL
19.0
20.0
18.0
1.00
0.236
19.00
0.23
-0.35
BM
18.0
19.0
18.0
0.58
0.118
18.33
0.00
-0.58
BN
18.0
18.0
17.0
0.58
0.118
17.67
-0.23
-0.81
BO
18.0
19.0
19.0
0.58
0.118
18.67
0.12
-0.46
BS
•
BW
14.0
26.0
12.0
7.57
2.245
17.33
-0.35
-0.92
C
14.0
15.0
16.0
1.00
0.236
15.00
-1.15
-1.73
CA
16.0
18.0
18.0
1.15
0.236
17.33
-0.35
-0.92
CE
18.0
17.0
18.0
0.58
0.118
17.67
-0.23
-0.81
CG
•
CJ
18.0
22.0
19.0
2.08
0.473
19.67
0.46
-0.12
CK
20.0
18.0
18.0
1.15
0.236
18.67
0.12
-0.46
CM
14.0
13.0
12.0
1.00
0.236
13.00
-1.85
-2.42
CO
20.0
21.0
17.0
2.08
0.473
19.33
0.35
-0.23
CP
211.0
216.0
214.0
2.52
0.591
213.67
67.67
67.09
X
CQ
17.0
17.0
18.0
0.58
0.118
17.33
-0.35
-0.92
CS
17.0
20.0
19.0
1.53
0.354
18.67
0.12
-0.46
CX
n
24.0
24.0
19.0
2.89
0.591
22.33
1.39
0.81
MJ
DB
•
•
DD
20.0
20.0
23.0
1.73
0.354
21.00
0.92
0.35
DE
20.0
20.0
20.0
0.00
0.000
20.00
0.58
0.00
DG
17.0
18.0
18.0
0.58
0.118
17.67
-0.23
-0.81
DJ
•
DL
17.0
18.0
17.0
0.58
0.118
17.33
-0.35
-0.92
• =
0 ^
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
= Below control limit
^ 'J
-------
f(
V
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
33/44
Cesium-134
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
18.0
20.0
18.0
1.15
0.236
18.67
0.12
-0.46
DO
17.0
20.0
16.0
2.08
0.473
17.67
-0.23
-0.81
D9
•
DT
17.0
20.0
16.0
2.08
0.473
17.67
-0.23
-0.81
DZ
15.0
14.0
16.0
1.00
0.236
15.00
-1.15
-1.73
E
19.0
19.0
19.0
0.00
0.000
19.00
0.23
-0.35
EB
16.0
17.0
16.0
0.58
0.118
16.33
-0.69
-1.27
EL
18.0
18.0
18.0
0.00
0.000
18.00
-0.11
-0.69
EO
•
ER
•
EV
¦ •
EX
22.0
21.0
22.0
0.58
0.118
21.67
1.16
0.58
FF
•
FJ
19.0
19.0
19.0
0.00
0.000
19.00
0.23
-0.35
FL
19.0
18.0
19.0
0.58
0.118
18.67
0.12
-0.46
FN
*
FU
19.0
18.0
18.0
0.58
0.118
18.33
0.00
-0.58
FZ
21.0
20.0
17.0
2.08
0.473
19.33
0.35
-0.23
GE
17.0
20.0
17.0
1.73
0.354
18.00
-0.11
-0.69
GI
17.0
17.0
17.0
0.00
0.000
17.00
-0.46
-1.04
GQ
20.0
20.0
20.0
0.00
0.000
20.00
0.58
0.00
GT
•
GZ
~
HI
10.0
13.0
10.0
1.73
0.354
11.00
-2.54
-3.12
HK
18.0
18.0
18.0
0.00
0.000
18.00
-0.11
-0.69
HL
19.0
18.0
18.0
0.58
0.118
18.33
0.00
-0.58
HP
19.0
19.0
18.0
0.58
0.118
18.67
0.12
-0.46
I
18.0
19.0
17.0
1.00
0.236
18.00
-0.11
-0.69
IC
19.0
21.0
19.0
1.15
0.236
19.67
0.46
-0.12
ID
•
J
17.0
17.0
17.0
0.00
0.000
17.00
-0.46
-1.04
JE
17.0
18.0
17.0
0.58
0.118
17.33
-0.35
-0.92
JG
14.0
15.0
16.0
1.00
0.236
15.00
-1.15
-1.73
JN
•
JQ
•
JS
19.0
19.0
19.0
0.00
0.000
19.00
0.23
-0.35
JY
31.0
25.0
21.0
5.03
1.345
25.67
2.54
1.96
K
18.0
17.0
18.0
0.58
0.118
17.67
-0.23
-0.81
KE
•
KT
•
KX
18.0
20.0
21.0
1.53
0.354
19.67
0.46
-0.12
L
19.0
17.0
20.0
1.53
0.354
18.67
0.12
-0.46
LF
19.0
18.0
19.0
0.58
0.118
18.67
0.12
-0.46
LG
•
LL
•
• =
No data submitted
TAG SYMBOLS
ff = Above control limit
0 s
V-
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
(t
34/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Cesium-134
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
LR
32.0
28.0
20.0
6.11
1.795
26.67
2.89
2.31
LT
20.0
20.0
18.0
1.15
0.236
19.33
0.35
-0.23
M
17.0
17.0
16.0
0.58
0.118
16.67
-0.58
-1.15
MA
17.0
16.0
19.0
1.53
0.354
17.33
-0.35
-0.92
MF
•
MP
74.0
72.0
70.0
2.00
0.473
72.00
18.59
18.01
X
MQ
18.0
19.0
19.0
0.58
0.118
18.67
0.12
-0.46
MV
9.0
10.0
8.0
1.00
0.236
9.00
-3.23
-3.81
w
MY
•
N
20.0
18.0
19.0
1.00
0.236
19.00
0.23
-0.35
NA
•
NH
17.0
16.0
18.0
1.00
0.236
17.00
-0.46
-1.04
NI
~
NJ
16.0
20.0
18.0
2.00
0.473
18.00
-0.11
-0.69
NK
16.0
15.0
13.0
1.53
0.354
14.67
-1.27
-1.85
NO
21.0
22.0
22.0
0.58
0.118
21.67
1.16
0.58
NT
«* ..
*
¦
f
O
21.0
21.0
21.0
0.00
0.000
21.00
0.92
0.35
OF
•
OS
•
OX
•
OY
•
OZ
32.0
28.0
30.0
2.00
0.473
30.00
4.04
3.46
X
P
23.0
21.0
21.0
1.15
0.236
21.67
1.16
0.58
PA
PB
20.0
20.0
20.0
0.00
0.000
20.00
0.58
0.00
PG
•
PI
17.0
17.0
18.0
0.58
0.118
17.33
-0.35
-0.92
PM
18.0
14.0
23.0
4.51
1.120
18.33
0.00
-0.58
PQ
18.0
17.0
17.0
0.58
0.118
17.33
-0.35
-0.92
PR
•
PV
18.0
18.0
25.0
4.04
0.827
20.33
0.69
0.12
PW
17.0
18.0
18.0
0.58
0.118
17.67
-0.23
-0.81
Q
17.0
18.0
19.0
1.00
0.236
18.00
-0.11
-0.69
QC
•
QJ
15.0
17.0
18.0
1.53
0.354
16.67
-0.58
-1.15
QP
27.0
31.0
28.0
2.08
0.473
28.67
3.58
3.00
QQ
•
QT
18.0
18.0
18.0
0.00
0.000
18.00
-0.11
-0.69
QU
13.0
14.0
15.0
1.00
0.236
14.00
-1.50
-2.08
QW
16.0
13.0
15.0
1.53
0.354
14.67
-1.27
-1.85
ox
19.0
20.0
19.0
0.58
0.118
19.33
0.35
-0.23
QY
•
QZ
18.0
16.0
17.0
1.00
0.236
17.00
-0.46
-1.04
RD
•
• =
No data submitted
TAG SYMBOLS
IT s Above control limit
0 s
V
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
JJ
-------
¦ —=
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995 35/44
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
RE
•
RF
19.0
19.0
19.0
0.00
0.000
19.00
0.23
-0.35
RG
•
RJ
•
RK
15.0
15.0
15.0
0.00
0.000
15.00
-1.15
-1.73
RP
- •
RR
19.0
17.0
18.0
1.00
0.236
18.00
-0.11
-0.69
RV
21.0
21.0
22.0
0.58
0.118
21.33
1.04
0.46
RZ
19.0
19.0
20.0
0.58
0.118
19.33
0.35
-0.23
S
18.0
18.0
18.0
0.00
0.000
18.00
-0.11
-0.69
sc
15.0
20.0
20.0
2.89
0.591
18.33
0.00
-0.58
SD
21.0
22.0
18.0
2.08
0.473
20.33
0.69
0.12
SF
20.0
17.0
19.0
1.53
0.354
18.67
0.12
-0.46
SI
20.0
21.0
24.0
2.08
0.473
21.67
1.16
0.58
SL
•
SM
18.0
19.0
18.0
0.58
0.118
18.33
0.00
-0.58
SN
16.0
17.0
18.0
1.00
0.236
17.00
-0.46
-1.04
SO
•
SR
17.0
16.0
18.0
1.00
0.236
17.00
-0.46
-1.04
ss
18.0
19.0
21.0
1.53
0.354
19.33
0.35
-0.23
ST
17.0
17.0
17.0
0.00
0.000
17.00
-0.46
-1.04
sx
16.0
19.0
18.0
1.53
0.354
17.67
-0.23
-0.81
sz
17.0
17.0
17.0
0.00
0.000
17.00
-0.46
-1.04
T
17.0
19.0
18.0
1.00
0.236
18.00
-0.11
-0.69
TD
20.0
19.0
19.0
0.58
0.118
19.33
0.35
-0.23
TE
16.0
19.0
18.0
1.53
0.354
17.67
-0.23
-0.81
TH
18.0
18.0
19.0
0.58
0.118
18.33
0.00
-0.58
TI
18.0
19.0
19.0
0.58
0.118
18.67
0.12
-0.46
TL
17.0
18.0
20.0
1.53
0.354
18.33
0.00
-0.58
TN
•
TQ
16.0
18.0
17.0
1.00
0.236
17.00
-0.46
-1.04
TS
17.0
18.0
17.0
0.58
0.118
17.33
-0.35
-0.92
TY
•
U
19.0
18.0
19.0
0.58
0.118
18.67
0.12
-0.46
UA
•
UE
20.0
18.0
19.0
1.00
0.236
19.00
0.23
-0.35
UG
«
UK
•
UN
18.0
18.0
19.0
0.58
0.118
18.33
0.00
-0.58
UP
18.0
15.0
16.0
1.53
0.354
16.33
-0.69
-1.27
UQ
•
uw
21.0
20.0
20.0
0.58
0.118
20.33
0.69
0.12
UY
18.0
18.0
17.0
0.58
0.118
17.67
-0.23
-0.81
VA
18.0
19.0
19.0
0.58
0.118
18.67
0.12
-0.46
VC
•
• =
0 s
V-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
It s Below control limit
&
-------
((
36/44
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
r
Cesium-134
Lab
Exper.
Rng anal
Normalized deviation
Res. 1
Res. 2
Res. 3 Sigma
(R + SR)
Average
(grand-avg) (known) Tag
VG
18.0
18.0
19.0 0.58
0.118
18.33
0.00
-0.58
VI
17.0
16.0
17.0 0.58
0.118
16.67
-0.58
-1.15
VJ
•
VM
24.0
22.0
24.0 1.15
0.236
23.33
1.73
1.15
VN
•
vo
19.0
16.0
17.0 1.53
0.354
17.33
-0.35
-0.92
VQ
•
VT
•
vu
•
w
16.0
17.0
16.0 0.58
0.118
16.33
-0.69
-1.27
WE
•
WF
21.0
21.0
22.0 0.58
0.118
21.33
1.04
0.46
X
Z
17.0
17.0
18.0 0.58
0.118
17.33
-0.35
-0.92
•
Data sorted by Laboratory Averag
fe
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lpb
9.00
u
MV
17.00
AJ
18.00
RR
11.00
u
HI
17.00
AH
18.00
QT
13.00
CM
17.00
AE
18.00
Q
14.00
QU
17.33
X
18.00
NJ
14.67
QW
17.33
VO
18.00
I
14.67
NK
17.33
TS
18.00
HK
15.00
RK
17.33
PQ
18.00
GE
15.00
JG
17.33
PI
18.00
EL
15.00
DZ
17.33
MA
18.00
AL
15.00
C
17.33
JE
18.00
AF
16.00
A
17.33
DL
18.33
VG
16.33
W
17.33
CQ
18.33
UN
16.33
UP
17.33
CA
18.33
TL
16.33
EB
17.33
BW
18.33
TH
16.33
BH
17.67
UY
18.33
SM
16.33
AI
17.67
TE
18.33
SC
16.67
VI
17.67
SX
18.33
PM
16.67
QJ
17.67
PW
18.33
HL
16.67
M
17.67
K
18.33
FU
17.00
TQ
17.67
DT
18.33
BM
17.00
SZ
17.67
DO
18.67
VA
17.00
ST
17.67
DG
18.67
U
17.00
SR
17.67
CE
18.67
TI
17.00
SN
17.67
BN
18.67
SF
17.00
QZ
17.67
BC
18.67
MQ
17.00
NH
17.67
AW
18.67
LF
17.00
J
18.00
T
18.67
L
17.00
GI
18.00
S
18.67
HP
• s No data submitted
TAG SYMBOLS
ft = Above control limit
0 = Insufficient data
x = Determined to be an outlier
U - Below control limit
V
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995 37/44
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.67
FL
19.33
QX
21.00
DD
18.67
DM
19.33
LT
21.00
BK
18.67
CS
19.33
FZ
21.00
AP
18.67
CK
19.33
CO
21.33
WF
18.67
BO
19.67
KX
21.33
RV
18.67
AU
19.67
IC
21.67
SI
19.00
UE
19.67
CJ
21.67
P
19.00
RF
20.00
PB
21.67
NO
19.00
N
20.00
GQ
21.67
EX
19.00
JS
20.00
DE
22.33
CX
19.00
FJ
20.00
BB
23.33
VM
19.00
E
20.33
UW
25.67
JY
19.00
BL
20.33
SD
26.67
LR
19.00
AK
20.33
PV
28.67
QP
19.33
TD
20.33
BA
30.00
X
OZ
19.33
SS
20.67
AZ
72.00
X :
MP
19.33
RZ
21.00
O
213.67
X
CP
% responding labs Frequency distribution
10-
i i r™ I ~ T T T i T ~ T—~ 1 1 P-
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
responding labs Frequency distribution
20
10-
-- i-lnllll-li.
i i i
-4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS ft s Above control limit
0 = Insufficient data x = Determined to be an outlier J1 = Below control limit
^ -y
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995 38/44
Cesium-137 Statistical Summary 194 Participants
The known value of this nuclide is 11.0 pCi/I with an expected precision of 5.0; the control limits
are 2.3 to 19.7; the warning regions are 2.3 to 5.2 and 16.8 to 19.7
60(30.9 %) Failed to respond
129(66.5 %) Within all limits
2(1.0 %) In warning zone
but wlthfcn control
3(1.5 %) Outliers
Statistic Respondents Non-outliers
Mean
14.07
Grand Avg 11.78
Std. Dev.
23.08
1.68
Variance
532.72
2.84
% Coef. of Var.
164.02
14.29
% deviation of mean from known value
27.93
7.12
Norm. dev. of mean from known value
0.13
0.47
Median
11.67
11.67
% deviation of median from known value
6.06
6.06
Norm. dev. of median from known value
0.03
0.40
116(86.6 %) Within 1 norm. S.D.
of known value
4(3.0 %) More than 3 norm. S.D.
13(9.7 %) Between 1 and 2 norm. S.D.
-------
39 / 44 CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.35
AE
12.0
13.0
10.0
1.53
0.354
11.67
-0.04
0.23
AF
13.0
11.0
10.0
1.53
0.354
11.33
-0.16
0.12
AH
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
AI
10.0
11.0
11.0
0.58
0.118
10.67
-0.39
-0.12
AJ
12.0
12.0
12.0
0.00
0.000
12.00
0.07
0.35
AK
12.0
11.0
13.0
1.00
0.236
12.00
0.07
0.35
AL
17.0
17.0
11.0
3.46
0.709
15.00
1.11
1.39
AO
•
AP
15.0
12.0
9.0
3.00
0.709
12.00
0.07
0.35
AR
•
AU
11.0
13.0
13.0
1.15
0.236
12.33
0.19
0.46
AW
12.0
13.0
13.0
0.58
0.118
12.67
0.31
0.58
AZ
16.0
11.0
12.0
2.65
0.591
13.00
0.42
0.69
BA
5.0
6.0
8.0
1.53
0.354
6.33
-1.89
-1.62
BB
11.0
11.0
12.0
0.58
0.118
11.33
-0.16
0.12
BC
12.0
12.0
12.0
0.00
0.000
12.00
0.07
0.35
BG
BH
14.0
14.0
12.0
1.15
0.236
13.33
0.54
0.81
BK
13.0
14.0
14.0
0.58
0.118
13.67
0.65
0.92
BL
12.0
12.0
13.0
0.58
0.118
12.33
0.19
0.46
BM
13.0
12.0
12.0
0.58
0.118
12.33
0.19
0.46
BN
13.0
12.0
12.0
0.58
0.118
12.33
0.19
0.46
BO
9.0
11.0
13.0
2.00
0.473
11.00
-0.27
0.00
BS
•
BW
10.0
17.0
12.0
3.61
0.827
13.00
0.42
0.69
C
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.35
CA
10.0
11.0
12.0
1.00
0.236
11.00
-0.27
0.00
CE
10.0
13.0
12.0
1.53
0.354
11.67
-0.04
0.23
CG
•
CJ
12.0
13.0
10.0
1.53
0.354
11.67
-0.04
0.23
CK
15.0
15.0
12.0
1.73
0.354
14.00
0.77
1.04
CM
19.0
18.0
18.0
0.58
0.118
18.33
2.27
2.54
CO
12.0
10.0
11.0
1.00
0.236
11.00
-0.27
0.00
CP
275.0
278.0
276.0
1.53
0.354
276.33
91.64
91.91
X
CQ
12.0
13.0
14.0
1.00
0.236
13.00
0.42
0.69
CS
11.0
10.0
10.0
0.58
0.118
10.33
-0.50
-0.23
CX
n
12.0
15.0
14.0
1.53
0.354
13.67
0.65
0.92
U
DB
•
•
DD
13.0
12.0
13.0
0.58
0.118
12.67
0.31
0.58
DE
12.0
12.0
12.0
0.00
0.000
12.00
0.07
0.35
DG
13.0
15.0
16.0
1.53
0.354
14.67
1.00
1.27
DJ
•
DL
9.0
12.0
11.0
1.53
0.354
10.67
-0.39
-0.12
• =
1 0S
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
JJ- = Below control limit
-------
r,
?s
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
40/44
/
Cesium-137
1
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
DM
10.0
12.0
11.0
1.00
0.236
11.00
-0.27
0.00
DO
10.0
10.0
7.0
1.73
0.354
9.00
-0.96
-0.69
DS
*
DT
10.0
13.0
10.0
1.73
0.354
11.00
-0.27
0.00
DZ
14.0
14.0
14.0
0.00
0.000
14.00
0.77
1.04
E
14.0
13.0
9.0
2.65
0.591
12.00
0.07
0.35
EB
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
EL
11.0
12.0
14.0
1.53
0.354
12.33
0.19
0.46
EO
•
ER
~
EV
•
EX
14.0
12.0
12.0
1.15
0.236
12.67
0.31
0.58
FF
•
FJ
11.0
12.0
14.0
1.53
0.354
12.33
0.19
0.46
FL
12.0
12.0
12.0
0.00
0.000
12.00
0.07
0.35
FN
•
FU
12.0
12.0
12.0
0.00
0.000
12.00
0.07
0.35
FZ
14.0
18.0
16.0
2.00
0.473
16.00
1.46
1.73
GE
12.0
12.0
11.0
0.58
0.118
11.67
-0.04
0.23
GI
11.0
11.0
12.0
0.58
0.118
11.33
-0.16
0.12
GQ
12.0
12.0
12.0
0.00
0.000
12.00
0.07
0.35
GT
•
GZ
•
HI
10.0
7.0
12.0
2.52
0.591
9.67
-0.73
-0.46
HK
12.0
12.0
11.0
0.58
0.118
11.67
-0.04
0.23
HL
14.0
13.0
13.0
0.58
0.118
13.33
0.54
0.81
HP
12.0
13.0
13.0
0.58
0.118
12.67
0.31
0.58
I
12.0
14.0
13.0
1.00
0.236
13.00
0.42
0.69
IC
12.0
11.0
11.0
0.58
0.118
11.33
-0.16
0.12
ED
•
J
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
JE
11.0
11.0
12.0
0.58
0.118
11.33
-0.16
0.12
JG
12.0
9.0
11.0
1.53
0.354
10.67
-0.39
-0.12
JN
•
JQ
*
JS
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
JY
•
K
10.0
10.0
11.0
0.58
0.118
10.33
-0.50
-0.23
KE
•
KT
•
KX
11.0
11.0
12.0
0.58
0.118
11.33
-0.16
0.12
L
13.0
14.0
11.0
1.53
0.354
12.67
0.31
0.58
LF
11.0
10.0
9.0
1.00
0.236
10.00
-0.62
-0.35
LG
•
LL
•
• =
No data submitted
TAG SYMBOLS
ft = Above control limit
I 0 S
v-
Insufficient data
x =
Determined to be an outlier
li = Below control limit
y
-------
^
41/44 CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
LR
12.0
12.0
10.0
1.15
0.236
11.33
-0.16
0.12
LT
13.0
11.0
13.0
1.15
0.236
12.33
0.19
0.46
M
10.0
11.0
11.0
0.58
0.118
10.67
-0.39
-0.12
MA
12.0
11.0
11.0
0.58
0.118
11.33
-0.16
0.12
MF
•
MP
47.0
42.0
47.0
2.89
0.591
45.33
11.62
11.89
X
MQ
13.0
12.0
11.0
1.00
0.236
12.00
0.07
0.35
MV
9.0
7.0
6.0
1.53
0.354
7.33
-1.54
-1.27
MY
•
N
11.0
12.0
13.0
1.00
0.236
12.00
0.07
0.35
NA
•
NH
12.0
12.0
11.0
0.58
0.118
11.67
-0.04
0.23
NI
•
NJ
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.35
NK
10.0
11.0
9.0
1.00
0.236
10.00
-0.62
-0.35
NO
11.0
11.0
12.0
0.58
0.118
11.33
-0.16
0.12
NT
*
f
O
13.0
13.0
13.0
0.00
0.000
13.00
0.42
0.69
OF
•
OS
•
OX
•
OY
•
OZ
22.0
20.0
19.0
1.53
0.354
20.33
2.96
3.23
X
P
15.0
13.0
14.0
1.00
0.236
14.00
0.77
1.04
PA
•
PB
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.35
PG
•
PI
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
PM
14.0
16.0
12.0
2.00
0.473
14.00
0.77
1.04
PQ
10.0
11.0
10.0
0.58
0.118
10.33
-0.50
-0.23
PR
•
PV
8.0
11.0
12.0
2.08
0.473
10.33
-0.50
-0.23
PW
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
Q
11.0
12.0
12.0
0.58
0.118
11.67
-0.04
0.23
QC
•
QJ
12.0
16.0
15.0
2.08
0.473
14.33
0.88
1.15
QP
16.0
21.0
22.0
3.21
0.709
19.67
2.73
3.00
QQ
•
QT
11.0
10.0
11.0
0.58
0.118
10.67
-0.39
-0.12
QU
11.0
10.0
12.0
1.00
0.236
11.00
-0.27
0.00
QW
9.0
10.0
12.0
1.53
0.354
10.33
-0.50
-0.23
ox
15.0
14.0
15.0
0.58
0.118
14.67
1.00
1.27
QY
•
QZ
10.0
10.0
11.0
0.58
0.118
10.33
-0.50
-0.23
RD
•
• =
[0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1? - Above control limit
U- s Below control limit
JJ
-------
f,
^
\
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
42/44
c
Cesium-137
Exper.
Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
RE
•
RF
11.0
11.0
9.0
1.15
0.236
10.33
-0.50
¦0.23
RG
•
RJ
•
RK
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.35
RP
•
RR
12.0
11.0
13.0
1.00
0.236
12.00
0.07
0.35
RV
14.0
12.0
10.0
2.00
0.473
12.00
0.07
0.35
RZ
11.0
12.0
12.0
0.58
0.118
11.67
-0.04
0.23
S
12.0
11.0
12.0
0.58
0.118
11.67
-0.04
0.23
sc
11.0
9.0
10.0
1.00
0.236
10.00
-0.62
-0.35
SD
12.0
13.0
16.0
2.08
0.473
13.67
0.65
0.92
SF
10.0
13.0
14.0
2.08
0.473
12.33
0.19
0.46
SI
13.0
13.0
9.0
2.31
0.473
11.67
-0.04
0.23
SL
•
SM
13.0
12.0
11.0
1.00
0.236
12.00
0.07
0.35
SN
12.0
11.0
10.0
1.00
0.236
11.00
-0.27
0.00
SO
•
SR
15.0
9.0
13.0
3.06
0.709
12.33
0.19
0.46
SS
14.0
15.0
14.0
0.58
0.118
14.33
0.88
1.15
ST
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
SX
12.0
10.0
10.0
1.15
0.236
10.67
-0.39
-0.12
SZ
12.0
11.0
12.0
0.58
0.118
11.67
-0.04
0.23
T
10.0
10.0
12.0
1.15
0.236
10.67
-0.39
-0.12
TD
12.0
14.0
13.0
1.00
0.236
13.00
0.42
0.69
TE
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
0.00
TH
12.0
11.0
12.0
0.58
0.118
11.67
-0.04
0.23
TI
11.0
11.0
13.0
1.15
0.236
11.67
-0.04
0.23
TL
8.0
8.0
13.0
2.89
0.591
9.67
-0.73
-0.46
TN
•
TQ
11.0
12.0
13.0
1.00
0.236
12.00
0.07
0.35
TS
8.0
10.0
10.0
1.15
0.236
9.33
-0.85
-0.58
TY
•
U
12.0
12.0
10.0
1.15
0.236
11.33
-0.16
0.12
UA
•
UE
12.0
11.0
11.0
0.58
0.118
11.33
-0.16
0.12
UG
•
UK
•
UN
12.0
12.0
13.0
0.58
0.118
12.33
0.19
0.46
UP
11.0
11.0
10.0
0.58
0.118
10.67
-0.39
-0.12
UQ
•
uw
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.35
UY
12.0
13.0
14.0
1.00
0.236
13.00
0.42
0.69
VA
11.0
12.0
11.0
0.58
0.118
11.33
-0.16
0.12
VC
•
• =
No data submitted
TAG SYMBOLS
IT = Above control limit
Insufficient data
x =
Determined to be an outlier
¦11 = Below control limit
SJ
-------
//
43/44
«•
^
CRD-LV Performance Evaluation: Blind-B,
18-Apr-1995
Cesium-137
Lab
Res. 1
Exper.
Rng anal
Normalized deviation
Res. 2
Res. 3 Sigma
(R + SR)
Average
(grand-avg) (known) Tag
VG
10.0
11.0
10.0 0.58
0.118
10.33
-0.50
-0.23
VI
13.0
11.0
13.0 1.15
0.236
12.33
0.19
0.46
VJ
•
VM
11.0
13.0
12.0 1.00
0.236
12.00
0.07
0.35
VN
•
vo
13.0
13.0
11.0 1.15
0.236
12.33
0.19
0.46
VQ
•
VT
%
VU
•
W
11.0
11.0
9.0 1.15
0.236
10.33
-0.50
-0.23
WE
•
WF
15.0
14.0
16.0 1.00
0.236
15.00
1.11
1.39
X
Z
10.0
11.0
13.0 1.53
0.354
11.33
-0.16
0.12
•
Data sorted by Laboratory Averaj
je
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.33
BA
10.67
M
11.33
IC
7.33
MV
10.67
JG
11.33
GI
9.00
DO
10.67
DL
11.33
BB
9.33
TS
10.67
AI
11.33
AF
9.67
TL
11.00
TE
11.67
TI
9.67
HI
11.00
ST
11.67
TH
10.00
UW
11.00
SN
11.67
SZ
10.00
SC
11.00
QU
11.67
SI
10.00
RK
11.00
PW
11.67
s
10.00
PB
11.00
PI
11.67
RZ
10.00
NK
11.00
JS
11.67
Q
10.00
NJ
11.00
J
11.67
NH
10.00
LF
11.00
EB
11.67
HK
10.00
C
11.00
DT
11.67
GE
10.00
A
11.00
DM
11.67
CJ
10.33
W
11.00
CO
11.67
CE
10.33
VG
11.00
CA
11.67
AE
10.33
RF
11.00
BO
12.00
VM
10.33
QZ
11.00
AH
12.00
TQ
10.33
QW
11.33
X
12.00
SM
10.33
PV
11.33
VA
12.00
RV
10.33
PQ
11.33
UE
12.00
RR
10.33
K
11.33
U
12.00
N
10.33
CS
11.33
NO
12.00
MQ
10.67
UP
11.33
MA
12.00
GQ
10.67
T
11.33
LR
12.00
FU
10.67
sx
11.33
KX
12.00
FL
10.67
QT
11.33
JE
12.00
E
• = No data submitted
TAG SYMBOLS
IT = Above control limit
[ 0 = Insufficient data
x = Determined to be an outlier
•U = Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 18-Apr-1995
44/44
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
12.00
DE
12.33
AU
13.67
BK
12.00
BC
12.67
L
14.00
PM
12.00
AP
12.67
HP
14.00
P
12.00
AK
12.67
EX
14.00
DZ
12.00
AJ
12.67
DD
14.00
CK
12.33
VO
12.67
AW
14.33
SS
12.33
VI
13.00
UY
14.33
QJ
12.33
UN
13.00
TD
14.67
QX
12.33
SR
13.00
O
14.67
DG
12.33
SF
13.00
I
15.00
WF
12.33
LT
13.00
CQ
15.00
AL
12.33
FJ
13.00
BW
16.00
FZ
12.33
EL
13.00
AZ
18.33
CM
12.33
BN
13.33
HL
19.67
QP
12.33
BM
13.33
BH
20.33
X
OZ
12.33
BL
13.67
SD
45.33
X
MP
13.67
CX
276.33
X
CP
% responding labs
Frequency distribution
20-
10-
T-
-6
-I—
-2
i—
+2
-1—
+6
+4
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
20-
10-
T-
¦6
r- -T r-
•4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
+6
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
"ft s Above control limit
s Below control limit
-------