cvEPA
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-96/011
February 1996
Gamma in Water
Performance
Evaluation Study
A Statistical Evaluation of
the June 9, 1995 Data
023RSL96 cov-011
-------
Gamma in Water
Performance Evaluation Study
June 9, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Gamma in Water; June 9, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-21 04 or Patricia Honsa at 702/798-2141 .
Sincerely,
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995 1/39
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part, is separated from the next, hy a new pape 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.
-------
2/39 CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
3/39
Cobalt-60 Statistical Summary 191 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 5.0; the control limits
are 31.3 to 48.7; the warning regions are 31.3 to 34.2 and 45.8 to 48.7
2O(10.5 %) Failed to respond --.
1O(5.2%) Outliers '
Statistic
. 154(80.6 %) Within all limits
Respondents
* 7(3.7 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
41.91
23.58
555.84
56.25
4.78
0.08
39.67
-0.83
-0.01
Grand Avg 39.71
2.52
6.33
6.34
-0.71
-0.11
39.67
-0.83
-0.13
11 (6.4 %) More than 3 norm. S.D. ..
6(3.5 %) Between 2 and 3 norm. S.D.
119(69.6 %) Within 1 norm. S.D.
of known value
' 35(20.5 %) Between 1 and 2 norm. S.D.
-------
/j.
4/39 CRD-LV Performance
Evaluation
Gamma in Water, 9-Jun-1995
J
Cobalt-60
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
BK
BO
BW
C
CA
CC
CE
CG
CJ
CK
CM
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DL
=
0 3
\^- "
Res. 1
34.0
40.0
37.0
35.0
32.0
39.0
39.0
45.0
36.0
40.0
43.0
42.0
38.0
47.0
44.0
41.0
38.0
49.0
44.0
41.0
43.0
40.0
38.0
39.0
31,0
40.0
40.0
41.0
44.0
40.0
43.0
44.0
43.0
42.0
40.0
40.0
43.0
38.0
40.0
40.0
38.0
40.0
39.0
Res. 2
36.0
42.0
40.0
36.0
38.0
40.0
36.0
42.0
38.0
41.0
42.0
39.0
36.0
34.0
40.0
41.0
38.0
82.0
42.0
42.0
44.0
41.0
39.0
40.0
26.0
43.0
39.0
40.0
44.0
45.0
38.0
40.0
42.0
41.0
41.0
36.0
41.0
40.0
38.0
40.0
39.0
39.0
39.0
Res. 3
37.0
39.0
42.0
34.0
35.0
39.0
40.0
45.0
36.0
40.0
37.0
36.0
37.0
36.0
40.0
41.0
38.0
71.0
43.0
37.0
44.0
38.0
39.0
40.0
28.0
41.0
44.0
40.0
44.0
42.0
34.0
44.0
43.0
42.0
42.0
39.0
40.0
41.0
37.0
40.0
39.0
39.0
41.0
No data submitted
Insufficient
data
X £
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
1.53
1.53
2.52
1.00
3.00
0.58
2.08
1.73
1.15
0.58
3.21
3.00
1.00
7.00
2.31
0.00
0.00
16.80
1.00
2.65
0.58
1.53
0.58
0.58
2.52
1.53
2.65
0.58
0.00
2.52
4.51
2.31
0.58
0.58
1.00
2.08
1.53
1.53
1.53
0.00
0.58
0.58
1.15
0.354
0.354
0.591
0.236
0.709
0.118
0.473
0.354
0.236
0.118
0.709
0.709
0.236
2.020
0.473
0.000
0.000
6.521
0.236
0.591
0.118
0.354
0.118
0.118
0.591
0.354
0.591
0.118
0.000
-
0.591
1.120
0.473
0.118
0.118
0.236
0.473
0.354
0.354
0.354
0.000
0.118
0.118
0.236
35.67
40.33
39.67
35.00
35.00
39.33
38.33
44.00
36.67
40.33
40.67
39.00
37.00
39.00
41.33
41.00
38.00
: 67.33
43.00
40.00
43.67
39.67
38.67
39.67
; 28.33
41.33
41.00
40.33
44.00
42.33
38.33
42.67
42.67
41.67
41.00
38.33
41.33
39.67
38.33
40.00
38.67
39.33
39.67
TAG SYMBOLS
Determined
to be an
outlier
-1.40
0.21
-0.02
-1.63
-1.63
-0.13
-0.48
1.48
-1.06
0.21
0.33
-0.25
-0.94
-0.25
0.56
0.45
-0.59
9:57
1.14
0.10
1.37
-0.02
-0.36
-0.02
-3.94
0.56
0.45
0.21
1.48
0.91
-0.48
1.02
1.02
0.68
0.45
-0.48
0.56
-0.02
-0.48
0.10
-0.36
-0.13
-0.02
1? = Above
11 = Below
-1.50
0.12
-0.12
-1.73
-1.73
-0.23
-0.58
1.39
-1.15
0.12
0.23
-0.35
-1.04
-0.35
0.46
0.35
-0.69
9.47 x
1.04
0.00
1.27
-0.12
-0.46
:
-0.12
-4.04 x
0.46
0.35
0.12
1.39
-
0.81
-0.58
0.92
0.92
0.58
0.35
-0.58
0.46
-0.12
-0.58
0.00
-0.46
-0.23
-0.12
control limit
control limit
-^
-------
CRD-LV Performance Evaluation: Gamma in Water,
9-Jun-1995
5/39 I
Cobalt-60
Exper. Rng anal
Lab
DM
DO
DT
DZ
E
EA
EB
EL
EN-
EW
EX
EZ
FJ
FK
FL
FU
f'FZ
GE
GI
GL
GQ
ffl
HJ
HK
HL
HP
HX
I
1C
J
JE
JG
JI
JS
JY
K
KH
KL
KX
L
LE
LF
LR
LT
M
Res. 1
38.0
40.0
44.0
40.0
40.0
39.0
38.0
39.0
39.0
38.0
40.0
39.0
40.0
42.0
20.0
37.0
38.0
40.0
44.0
47.0
46.0
40.0
39.0
38.0
42.0
44.0
38.0
41.0
40.0
41.0
36.0
40.0
340iO
31.0
40.0
38.0
39.0
44.0
40.0
42.0
40.0
40.0
38.0
Res. 2
39.0
41.0
39.0
39.0
40.0
39.0
38.0
37.0
37.0
44.0
41.0
41.0
40.0
39.0
25,0
39.0
39.0
40.0
43.0
49>0
46.0
39.0
39.0
39.0
42.0
43.0
40.0
41.0
41.0
37.0
37.0
40.0
345.0
38.0
41.0
37.0
40.0
44.0
34.0
40.0
43.0
40.0
36.0
Res. 3
42.0
38.0
38.0
42.0
40.0
40.0
38.0
40.0
43.0
35.0
43.0
40.0
40.0
39.0
18.0
41.0
40.0
39.0
42.0
53.0
40.0
41.0
39.0
38.0
38.0
38.0
39.0
40.0
38.0
38.0
35.0
40.0
340.0
33.0
41.0
37.0
38.0
45.0
40.0
39.0
37.0
40.0
39.0
s No data submitted
.0-
Insufficient
data
x =
Sigma (R
2.08
1.53
3.21
1.53
0.00
0.58
0.00
1.53
3.06
4.58
1.53
1.00
0.00
1.73
3.61
2.00
1.00
0.58
1.00
3.06
3.46
1.00
0.00
0.58
2.31
3.21
1.00
0.58
1.53
2.08
1.00
0.00
2.89
3.61
0.58
0.58
1.00
0.58
3.46
1.53
3.00
0.00
1.53
+ SR)
0.473
0.354
0.709
0.354
0.000
0.118
0.000
0.354
0.709
1.120
0.354
0.236
0.000
0.354
0.827
0.473
0.236
0.118
0.236
0.709
0.709
0.236
0.000
0.118
0.473
0.709
0.236
0.118
0.354
0.473
0.236
0.000
0.591
0.827
0.118
0.118
0.236
0.118
0.709
0.354
0.709
0.000
0.354
Average
39.67
39.67
40.33
40.33
40.00
39.33
38.00
38.67
"
39.67
39.00
41.33
40.00
40.00
40.00
21.00
39.00
39.00
39.67
43.00
49.67
44.00
40.00
39.00
38.33
40.67
41.67
39.00
40.67
39.67
38.67
36.00
40.00
341.67
34.00
40.67
37.33
39.00
44.33
38.00
40.33
40.00
40.00
37.67
TAG SYMBOLS
Determined to be an outlier
Normalized deviation
(grand-avg)
-0.02
-0.02
0.21
0.21
0.10
-0.13
-0.59
-0.36
-0.02
-0.25
0.56
0.10
0.10
0.10
-6.48
-0.25
-0.25
-0.02
1.14
3.45
1.48
0.10
-0.25
-0.48
0.33
0.68
-0.25
0.33
-0.02
-0.36
-1.29
0.10
104.60
-1.98
0.33
-0.82
-0.25
1.60
-0.59
0.21
0.10
0.10
-0.71
(known) Tag
-0.12
-0.12
0.12
0.12
0.00
-0.23
-0.69
-0.46
.,.'.. :*... ,>:> 0.
-0.12
-0.35
0.46
0.00
0.00
0.00
-6.58 x
-0.35
-0.35
-0.12
1.04
3i35-'-v->T:
1.39
0.00
-0.35
-0.58
0.23
0.58
-0.35
0.23
-0.12
-0.46
-1.39
0.00
104.50 x
-2.08
0.23
-0.92
-0.35
1.50
-0.69
0.12
0.00
0.00
-0.81
1T s Above control limit
li = Below control limit
'
-------
6 / 39 CRD-LV Performance
Cobalt-60
Lab Res. 1
MA
ML
MP
MQ
MV
MY
N
NH
NJ
NK
NO
NP
NZ
O
OA
OB
OK
OL
OM
OZ
p
PB
PE
PI
PM
PQ
PU
PV
PW
Q
QJ
QP
QT
QU
QW
QX
QZ
R
RF
RH
RL
RO
RR
RU
RV
=
49.0
41.0
41.0
44.0
43.0
36.0
37.0
25.0
35.0
40.0
55.0
44.0
37.0
37.0
36.0
44.0
38.0
42.0
52.0
39.0
39.0
42.0
34.0
40.0
37.0
38.0
39.0
36.0
35.0
33.0
43.0
37.0
40.0
35.0
33.0
39.0
41.0
42.0
43.0
Res. 2
52.0
42.0
41.0
46.0
41.0
37.0
39.0
: 35.0
36.0
42.0
37.0
44.0
38.0
35.0
37.0
49.0
38.0
41.0
51.0
40.0
.,
39.0
50.0
36.0
36.0
38.0
37.0
, , ,
38.0
37.0
36.0
34.0
45.0
37.0
38.0
37.0
37.0
40.0
39.0
45.0
39.0
Res. 3
45.0
41.0
34.0
48.0
42.0
37.0
38.0
30.0
36.0
38.0
51.0
44.0
38.0
40.0
38.0
36.0
38.0
42.0
55.0
41.0
38.0
46.0
40.0
40.0
39.0
39.0
38.0
38.0
34.0
35.0
45.0
40.0
39.0
37.0
36.0
40.0
40.0
38.0
37.0
No data submitted
Insufficient
data
x =
Evaluation: Gamma in Water, 9-Jun-1995
Exper.
Sigma
3.51
0.58
4.04
2.00
1.00
0.58
1.00
5.00
0.58
2.00
9.45
0.00
0.58
2.5'2
1.00
6.56
0.00
0.58
2.08
1.00
1
0.58
4.00
3.06
2.31
1.00
1.00
0.58
1.00
1.00
1.00
1.15
1.73
1.00
1.15
2.08
0.58
1.00
3.51
3.06
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.827
0.118
0.827
0.473
0.236
0.118
0.236
1.345
0.118
0.473
3.146
0.000
0.118
0.591
0.236
2.020
0.000
0.118
0.473
0.236
0.118
0.945
0.709
0.473
0.236
0.236
0.118
0.236
0.236
0.236
0.236
0.354
0.236
0.236
0.473
0.118
0.236
0.827
0.709
48.67
41.33
38.67
46.00
42.00
36.67
38.00
30.00
35.67
40.00
47.67
44.00
37.67
37.33
37.00
43.00
38.00
41.67
52.67
40.00
38.67
46.00
36.67
38.67
38.00
38.00
38.33
37.00
35.00
34.00
44.33
38.00
39.00
36.33
35.33
39.67
40.00
41.67
39.67
TAG SYMBOLS
Determined
to be an
outlier
3.10
0.56
-0.36
2.18
0.79
-1.06
-0.59
-3.37
-1.40
0.10
2.75
1.48
-0.71
-0.82
-0.94
1.14
-0.59
0.68
4.49
0.10
,
-0.36
2.18
-1.06
-0.36
-0.59
-0.59
-0.48
-0.94
-1.63
-1.98
1.60
-0.59
- -0.25
-1.17
-1.52
-0.02
0.10
0.68
-0.02
ft s Above
!! & Below
.,,.
3.00
0.46
-0.46
2.08
, *
0.69
-1.15
-0.69
-3.46 x
-1.50
0.00
2.66
1.39
-0.81
-0.92
-1.04
1.04
-0.69
0.58
4.39 x
0.00
*S
-0.46
2.08
-1.15
,,,r ' »
-0.46
-0.69
-0.69
. .... ,, .
-0.58
-1.04
-1.73
-2.08
1.50
-0.69
-0.35
-1.27
-1.62
-0.12
0.00
0.58
-0.12
control limit
control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jiui-1995
Cobalt-60
Lab Res. 1
RX
RZ
S
sc
SD
SF
SI
SM
SN
SR
ss
ST
SV
SX
sz
T
TO
TC
TT>
TE
TH
TI
TL
TO
TQ
TR
TS
U
UE
UM
UN
UP
UR
UT
UW
UX
UY
VA
VC
VE
VG
VH
VI
VM
VO
=
0 s
V y
39.0
39.0
39.0
38.0
41.0
41.0
42.0
38.0
39.0
39.0
^-;T-V:;
41.0
37.0
37.0
64.0
33.0
39.0
,
38.0
41.0
34.0
42.0
34.0
70.0
41.0
40.0
41.0
46.0
40.0
45.0
39.0
40.0
46.0
40.0
'..-;- ;'-'''' ;.:!: -..
39.0
37.0
39.0
40.0
42.0
Res. 2
37.0
40.0
34.0
40.0
40.0
44.0
41.0
43.0
38.0
39.0
52iO
42.0
40.0
36.0
58.0
39.0
43.0
35.0
39.0
37.0
39.0
38.0
71,0
40.0
41.0
41.0
43.0
41.0
43.0
39.0
42.0
45.0
40.0
-v:V".: "'.;- "::
39.0
38.0
40.0
39.0
45.0
Res. 3
>
37.0
38.0
38.0
43.0
40.0
44.0
43.0
41.0
37.0
38.0
51.0
43.0
38.0
37.0
63.0
42.0
40.0
38.0
40.0
44.0
39.0
40.0
70.0
39.0
41.0
39.0
38.0
40.0
43.0
39.0
41.0
44.0
41.0
: > .';;;,.';' ;:s
39.0
39.0
39.0
40.0
40.0
No data submitted
Insufficient
data
x =
7/39
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
<
1.15
1.00
2.65
2.52
0.58
1.73
1.00
2.52
1.00
0.58
2.65
1.00
1.53
0.58
:":V3.2l '
4.58
2.08
1.73
1.00
5.13
1.73
3.06
0.58.
1.00
0.58
1.15
4.04
0.58
1.15
0.00
1.00
1.00
0.58
" .: ' '
0.00
1.00
0.58
0.58
2.52
0.236
0.236
0.591
0.591
0.118
0.354
0.236
0.591
0.236
0.118
0.591
0.236
0.354
0.118
^0.709
1.120
0.473
0.354
0.236
1.345
0.354
0.709
0.118
0.236
0.118
0.236
0.945
0.118
0.236
0.000
0.236
0.236
0.118
0.000
0.236
0.118
0.118
0.591
<
37.67
39.00
37.00
40.33
40.33
43.00
42.00
40.67
38.00
38.67
50.00
42.00
38.33
36.67
61.67-
38.00
40.67
y
37.00
40.00
38.33
40.00
37.33
70.33
40.00
40.67
40.33
42.33
40.33
43.67
39.00
41.00
45.00
40.33
39.00
38.00
39.33
39.67
42.33
TAG SYMBOLS
Determined
to be an
outlier
-0.71
-0.25
-0.94
0.21
0.21
1.14
0.79
0.33
-0.59
-0.36
'/: 3.56 x »-V
0.79
-0.48
-1.06
7.60
-0.59
0.33
-0.94
0.10
-0.48
0.10
-0.82
10.61
0.10
0.33
0.21
0.91
0.21
1.37
-0.25
0.45
1.83
0.21
-0.25
-0.59
-0.13
-0.02
0.91
ft = Above
11 = Below
^
-0.81
-0.35
-1.04
0.12
0.12
1.04
0.69
0.23
-0.69
-0.46
0.69
-0.58
-1.15
7.51 x
-0.69
0.23
"Kv ''. ."-'
-1.04
0.00
-0.58
0.00
-0.92
10.51 X
0.00
0.23
0.12
:
0.81
0.12
1.27
. :l. :UJ..»
-0.35
;'-,; / :
0.35
1.73
0.12
.' - 'ttii'^i :'
-035
-0.69
-0.23
-0.12
0.81
control limit
control limit
j
-------
8/39 CRD-LV Performance Evaluation: Gamma
Cobalt-60
Lab Res. 1 Res. 2
VR - -' " ' ,, .. ' ,: ' .
VS 42.0 40.0
:VVT
-₯U . ' '
W 36.0 35.0
WD 38.0 36.0
WF 40.0 38.0
WI 37.0 34.0
WJ 43.0 41.0
WK 40.0 28.0
X 45.0 43.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
42.0 1.15 0.236
37.0 1.00 0.236
35.0 1.53 0.354
37.0 1.53 0.354
39.0 2.52 0.591
45.0 2.00 0.473
34.0 6.00 1.795
42.0 1.53 0.354
in Water, 9-Jun-1995
Normalized deviation
Average (grand- avg) (known)
41.33 0.56 0.46
36.00 -1.29 -1.39
36.33 -1.17 -1.27
38.33 -0.48 -0.58
36.67 -1.06 -1.15
43.00 1.14 1.04
34.00 -1.98 -2.08
43.33 1.25 1.15
^.
Tag
» , , ,
*
* ,-
Data sorted by Laboratory Average
Average Tag
21.00 x
28.33 x
30.00 x
34.00
34.00
34.00
35.00
35.00
35.00
35.33
35.67
35.67
36.00
36.00
36.33
36.33
36.67
36.67
36.67
36.67
36.67
37.00
37.00
37.00
37.00
37.00
37.33
37.33
37.33
37.67
37.67
s No data submitted
0 = Insufficient data
Lab Average Tag
FZ 37.67
BW 38.00
NK 38.00
WK 38.00
QW 38.00
K 38.00
QU 38.00
AI 38.00
AH 38.00
RH 38.00
NO 38.00
A 38.00
W 38.33
JI 38.33
WD 38.33
RF 38.33
WI 38.33
T 38.33
PQ 38.33
NH 38.33
AN 38.33
TH 38.67
SC 38.67
QT 38.67
OK 38.67
AY 38.67
TQ 38.67
OB 38.67
KL 38.67
RZ 39.00
OA 39.00
TAG SYMBOLS
Lab Average Tag
M 39.00
VH 39.00
TC 39.00
SR 39.00
QZ 39.00
Q 39.00
PW 39.00
OM 39.00
NJ 39.00
LE 39.00
EB 39.33
BC 39.33
WF 39.33
TL 39.33
SZ 39.67
QP 39.67
HP 39.67
DD 39.67
CS 39.67
CK 39.67
AK 39.67
SS 39.67
PV 39.67
PI 39.67
MQ 39.67
JG 39.67
EL 39.67
DG 40.00
BM 40.00
VG 40.00
UW 40.00
1T = Above control
x s Determined to be an outlier JJ s Below control
Lab
S
R
KX
1C
HL
GI
GE
EX
AZ
AW
VI
EA
DH
AJ
VM
RV
RO
JE
GL
EW
DO
DM
DL
D
BO
BL
AF
TS
TO
n
RR
limit
limit
-------
CRD-LV Performance Evaluation: Gamma
Cobalt-60
in Water, 9-Jun-1995
9/39
Data sorted by Laboratory Average
Average Tag
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.00
40.33
40.33
40.33
40.33
40.33
40.33
40.33
40.33
40.33
40.33
40.33
40.67
40.67
40.67
% responding labs
in.
IU' -----------
° -6 ' I
Lab Average Tag
PB 40.67
NP 40.67
LT 40.67
LR 40.67
JS 41.00
HK 41.00
FU 41.00
FL 41.00
FJ 41.33
' E 41.33
DE 41.33
BI 41.33
VC 41.33
UP 41.33
UE 41.67
SF 41.67
SD 41.67
LF 41.67
DZ 42.00
DT 42.00
CC 42.00
AP 42.33
AE 42.33
U 42.33
TD 42.67
SN 42.67
Frequency distribution
__
III
H|||B
....ll.lllllll.l.
' -2 ' 6 '
Lab Average Tag
KH 43.00
J 43.00
HX 43.00
AU 43.00
UY 43.00
CQ 43.33
CA 43.67
BB 43.67
VS 44.00
MP 44.00
EZ 44.00
CX 44.00
C 44.33
BA 44.33
RU 45.00
OZ 46.00
I 46.00
CP 47.67
SX 48.67
SM 49.67 x
N 50.00 x
VO 52.67 x
UN 61.67 x
CJ 67.33 x
CO 70.33 x
CM 341.67 x
__- _ -
72 T V4
Lab
WJ
SI
OL
GQ
BH
X
UR
BK
O
HJ
CE
AL
QX
L
VA
PM
MV
NZ
ML
m
sv
p
TB
BG
TR
JY
1
' +6
Normalized deviation of the mean from the known value
s No data submitted
0 s Insufficient data
TAG SYMBOLS fl s Above
x s Determined to be an outlier 11 = Below
control limit
control limit
-------
10/39 CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Cobalt-60
% responding labs Frequency distribution
10
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
11/39
Zinc-65 Statistical Summary 191 Participants
The known value of this nuclide is 76.0 pCi/1 with an expected precision of 8.0; the control limits
are 62.1 to 89.9; the warning regions are 62.1 to 66.7 and 85.3 to 89.9
22(11.5 %) Failed to respond ...^
1O(5.2%) Outliers'
2(1.0 %) Out of control
but not an outlier
Statistic
; 134(70.2 %) Within all limits
Respondents
23(12.0 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
87.37
75.19
5653.88
86.06
14.96
0.15
79.33
4.39
0.04
Grand Avg 78.75
5.52
30.48
7.01
3.62
0.50
79.33
4.39
0.60
12(7.1 %) More than 3 norm. S.D.
23(13.6 %) Between 2 and 3 norm. S.D.
84(49.7 %) Within 1 norm. S.D.
of known value
5O(29.6 %) Between 1 and 2 norm. S.D.
-------
12 / 39 CRD-LV Performance
Zinc
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BG
BH
Bl
BK
BL
BM
BN
BO
BW
C
CA
CC
CE
CG
CJ
CK
CM
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DL
65
Res. 1
67.0
88.0
82.0
76.0
68.0
79.0
76.0
92.0
76.0
74.0
80.0
75.0
70.0
90.0
805.0
81.0
81.0
105.0
82.0
11,0
93.0
71.0
75.0
79.0
26.0
83.0
74.0
87.0
86.0
79.0
70.0
89.0
82.0
82.0
77.0
79.0
82.0
80.0
79.0
75.0
68.0
74.0
74.0
Res. 2
75.0
77.0
78.0
71.0
74.0
82.0
78.0
85.0
77.0
76.0
69.0
77.0
74.0
84.0
831.0
85.0
82.0
117;0
86.0
90.0
93.0
70.0
77.0
81.0
26.0
88.0
78.0
87.0
89.0
86.0
74.0
85.0
69.0
80.0
82.0
83.0
84.0
76.0
78.0
75.0
74.0
74.0
67.0
Res. 3
75.0
77.0
79.0
75.0
71.0^
77.0
78.0
91.0
80.0
83.0
72.0
74.0
65.0
85.0
798.0
83.0
77.0
105.0
84.0
10.0
94.0
73.0
80.0
78.0
32.0
82.0
80.0
87.0
88.0
82.0
68.0
88.0
83.0
81.0
85.0
85.0
77.0
82.0
76.0
76.0
74.0
73.0
72.0
= No data submitted
0 =
Vc-^
Insufficient
data
X 5
Evaluation
Exper.
Sigma
4.62
6.35
2.08
2.65
3.00
2.52
1.15
3.79
2.08
4.73
5.69
1.53
4.51
3.21
17.39
2.00
2.65
6.93
2.00
45.90
0.58
1.53
2.52
1.53
3.46
3.21
3.06
0.00
1.53
3.51
3.06
2.08
7.81
1.00
4.04
3.06
3.61
3.06
1.53
0.58
3.46
0.58
3.61
: Gamma in Water,
Rng anal
(R + SR)
0.591
0.812
0.295
0.369
0.443
0.369
0.148
0.517
0.295
0.665
0.812
0.222
0.665
0.443
3.736
0.295
0.369
0.886
0.295
10.346
0.074
0.222
0.369
0.222
0.443
0.443
0.443
0.000
0.222
0.517
0.443
0.295
1.064
0.148
0.591
0.443
0.517
0.443
0.222
0.074
0.443
0.074
0.517
Average
72.33
80.67
79.67
74.00
71.00
79.33
77.33
89.33
77.67
77.67
73.67
75.33
69.67
86.33
811.33
83.00
80.00
109.00
84.00
37.00
93.33
71.33
77.33
79.33
28.00
84.33
77.33
87.00
87.67
82.33
70.67
87.33
78.00
81.00
81.33
82.33
81.00
79.33
77.67
75.33
72.00
73.67
71.00
TAG SYMBOLS
Determined
to be an outlier
9-Jun-1995
Normalized
(grand-avg)
-1.39
0.41
0.20
-1.03
-1.68
0.13
-0.31
2.29
-0.23
-0.23
-1.10
-0.74
-1.97
1.64
158.61
0.92
0.27
; ,6.55
1.14
-9.04
3.16
-1.61
-0.31
0.13
-10.99
1.21
-0.31
1.79
1.93
0.78
-1.75
1.86
-0.16
0.49
0.56
0.78
0.49
0.13
-0.23
-0.74
-1.46
-1.10
-1.68
deviation
(known) Tag
-0.79
1.01
0.79
-0.43
-1.08
0.72
0.29
2.89
0.36
0.36
-0.51
-0.14
-1.37
2.24
159.20 X
1.52
0.87
7:14 X
1.73
-8.44 x
3.75 ft
-1.01
0.29
0.72
-10.39 x
1.80
0.29
2.38
2.53
1.37
-1.15
2.45
' 0.43
1.08
1.15
1.37
1.08
0.72
0.36
-0.14
-0.87
-0.51
-1.08
ft = Above control limit
11 = Below control limit
-------
CRD-LV Performance
Evaluation: Gamma in Water, 9-Jun-1995
13/39
Zinc-65
Lab
DM
DO
DT
DZ
E
EA
EB
EL
EN
EW
EX
EZ
FJ
FK
FL
FU
FZ
GE
GI
GL
GQ
HI
HJ
HK
HL
HP
HX
I
1C
J
JE
JG
JI
JS
JY
K
KH
KL
KX
L
LE
LF
LR
LT
M
=
0 =
Res. 1
78.0
64.0
75.0
65.0
81.0
73.0
83.0
76.0
.. ,4. ;?.;;;;,>
76.0
83.0
75.0
86.0
81.0
75.0
38;0
74.0
80.0
81.0
85.0
82.0
77.0
84.0
83.0
73.0
79.0
73.0
82.0
79.0
77.0
75.0
74.0
77.0
728.0
71.0
80.0
73.0
74.0
89.0
279.0J
70.0
86.0
82.0
79.0
Res. 2
79.0
88.0
86.0
67.0
81.0
74.0
84.0
77.0
;..,.;>..':V:;v .i,,,' -
73.0
78.0
90.0
89.0
79.0
74.0
:£ 37,6
74.0
81.0
79.0
89.0
86.0
84.0
82.0
83.0
77.0
77.0
77.0
84.0
80.0
77.0
63.0
76.0
84.0
678.0
70.0
79.0
70.0
77.0
90.0
£ ' 265<0 ^'
77.0
69.0
79.0
80.0
Res. 3
83.0
73.0
73.0
64.0
76.0
80.0
85.0
80.0
:.. ;.';;,. :,'.'V><;^ -
75.0
81.0
72.0
85.0
77.0
73.0
34.0
72.0
83.0
79.0
94.0
75.0
80.0
82.0
83.0
74.0
80.0
83.0
76.0
79.0
78.0
62.0
72.0
80.0
660.0
69.0
79.0
66.0
76.0
90.0
V 29LO A
81.0
64.0
84.0
79.0
No data submitted
Insufficient
data
X s
Exper. Rng anal
Sigma (R + SR) Average
2.65
12.12
7.00
1.53
2.89
3.79
1.00
2.08
:'"'-.'j';.' : ' '">" '"
1.53
2.52
9.64
2.08
2.00
1.00
2,08
1.15
1.53
1.15
4.51
5.57
3.51
1.15
0.00
2.08
1.53
5.03
4.16
0.58
0.58
7.23
2.00
3.51
35.23
1.00
0.58
3.51
1.53
0.58
'^ 18.33 '-^
5.57
11.53
2.52
0.58
0.369
2.470
0.960
0.222
0.369
0.517
0.148
0.295
0.222
0.369
1.627
0.295
0.295
0.148
0;295
0.148
0.222
0.148
0.665
0.812
0.517
0.148
0.000
0.295
0.222
0.738
0.591
0.074
0.074
0.960
0.295
0.517
8.658
0.148
0.074
0.517
0.222
0.074
5 4158
0.812
2.189
0.369
0.074
80.00
75.00
78.00
65.33
79.33
75.67
84.00
77.67
74.67
80.67
79.00
86.67
79.00
74.00
36.33
73.33
81.33
79.67
89.33
81.00
80.33
82.67
83.00
74.67
78.67
77.67
80.67
79.33
77.33
66.67
74.00
80.33
688:67
70.00
79.33
69.67
75.67
89.67
275.00
76.00
73.00
81.67
79.33
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
0.27
-0.81
-0.16
-2.90
0.13
-0.67
1.14
-0.23
-0.88
0.41
0.05
1.71
0.05
-1.03
-9.18
-1.17
0.56
0.20
2.29
0.49
0.34
0.85
0.92
-0.88
-0.02
-0.23
0.41
0.13
-0.31
-2.62
-1.03
0.34
0.87
-0.22
0.43
-2.31
0.72
-0.07
1.73
0.36
-0.29
1.01
0.65
2.31
-
0.65
-0.43
-0.58
1.15
0.79
2.89
1.08
0.94
1.44
1.52
-0.29
0.58
0.36
1.01
0.72
0.29
-2.02
-0.43
0.94
?: 132.05 132.65 x
-1.89
0.13
-1.97
-0.67
2.36
42.49
-0.60
-1.25
0.63
0.13
ft = Above
li = Below
-1.30
0.72
-1.37
-0.07
2.96
43.08 x
0.00
-0.65
1.23
0.72
control limit
control limit
-------
14 / 39 CRD-LV Performance
Zinc-65
Lab Res. 1
MA
ML
MP
MQ
MV
MY
N
NH
NJ
NK
NO
NP
NZ
0
OA
: :£. .:,
OB
OK
OL
OM
OZ
P
PB
PE
PI
PM
PQ
PU
PV
PW
Q
QJ
QP
QT
QU
QW
QX
QZ
R
.?;RF
RH
SRL
RO
RR
RU
RV
=
0 s
/ ' '' ''~/%
97.0
82.0
91.0
85.0
81.0
80.0
75.0
71.0
79.0
76.0
50.0
87.0
76.0
, ', , ,
69.0
90.0
67.0
79.0
90.0
76.0
76.0
80.0
67.0
69.0
74.0
77.0
80.0
75.0
72.0
79.0
82.0
80.0
41,0
71.0
76.0
77.0
85.0
75.0
Res. 2
' ^ " '" *'
101.0
81.0
70.0
88.0
79.0
79.0
79.0
79.0
88.0
78.0
86.0
87.0
77.0
70.0
75.0
68.0
80.0
94.0
75.0
71.0
92.0
64.0
77.0
74.0
77.0
72.0
72.0
76.0
76.0
80.0
81.0
41.0
64.0
85.0
76.0
76.0
72.0
Res. 3
108.0
79.0
80.0
89.0
84.0
79.0
75.0
73.0
90.0
76.0
86.0
86.0
81.0
75.0
76.0
68.0
79.0
101.0
76.0
78.0
76.0
70.0
80.0
83.0
78.0
72.0
72.0
76.0
73.0
80.0
87.0
41.0
71.0
84.0
79.0
78.0
76.0
No data submitted
Insufficient
data
x =
Evaluation: Gamma in Water, 9-Jun-1995
Exper.
Sigma
5.57
1.53
10.50
2.08
2.52
0.58 .
2.31
4.16
5.86
1.15
20.78
0.58
2.65
3.21
8.39
0.58
0.58
5.57
0.58
3.61
8.33
3.00
5.69
5.20
0.58
4.62
1.73
2.31
3.00
1.15
3.79
0.00
4.04
4.93
1.53
4.73
2.08
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known)
0.812
0.222
2.049
0.295
0.369
0.074
0.295
0.591
0.812
0.148
4.158
0.074
0.369
0.443
1.205
0.074
0.074
0.812
0.074
0.517
1.345
0.443
0.812
0.665
0.074
0.591
0.222
0.295
0.443
, 0.148
0.517
0.000
0.517
0.665
0.222
0.665
0.295
- -
102.00
80.67
80.33
87.33
81.33
79.33
76.33
74.33
85.67
76.67
74.00
86.67
78.00
71.33
80.33
67.67
79.33
95.00
75.67
s"
75.00
82.67
67.00
75.33
77.00
77.33
74.67
73.00
74.67
76.00
80.67
82.67
41.00
68.67
81.67
77.33
79.67
74.33
TAG SYMBOLS
Determined
to be an
outlier
5.03
0.41
0.34
1.86
0.56
0.13
-0.52
-0.96
1.50
-0.45
-1.03
1.71
-0.16
, ,
-1.61
0.34
-2.40
0.13
3.52
-0.67
-0.81
0.85
-2.54
-0.74
-0.38
-0.31
-0.88
-1.25
-0.88
-0.60
0.41
0.85
-8.17
-2.18
0.63
-0.31
0.20
-0.96
ft = Above
U = Below
5:63
1.01
0.94
2.45
1.15
0.72
0.07
-0.36
2.09
0.14
-0.43
2.31
0.43
-1.01
0.94
-1.80
0.72
4.11
-0.07
-0.22
1.44
-1.95
-0.14
0.22
0.29
-0.29
-0.65
-0.29
0.00
1.01
1.44
-7.58
-1.59
,,-. ", :
1.23
0.29
0.79
-0.36
control
control
Tag
»
x
('» -,
.. ,',
ft
»'
; *
- :
X
- '
limit
limit
-------
CRD-LV Performance
Zinc-65
Lab
RX
RZ
S
sc
SD
SF
SI
SM
SN
SR
ss
ST
sv
sx
sz
T
TB
TC
TD
TE
TH
TI
TL
TO
TQ
TR
TS
U
UE
UM
UN
UP
UR
UT
UW
UX
UY
VA
VC
VE
VG
VH
VI
VM
VO
s No
Res. 1
82.0
75.0
72.0
78.0
80.0
89.0
88.0
87.0
84.0
71.0
s
78.0
83.0
79.0
75.0
1140 V
77.0
84.0
- ' ' ' .X. j.
73.0
81.0
66.0
86.0
81.0
72.0
77.0
77.0
71.0
86.0
83.0
89.0
81.0
84.0
87.0
81.0
80.0
74.0
82.0
86.0
81.0
Res. 2
81.0
77.0
89.0
95.0
81.0
86.0
93.0
71.0
82.0
82.0
85.0
85.0
81.0
70.0
122.0
78.0
79.0
66.0
85.0
66.0
85.0
77.0
66.0
84.0
76.0
69.0
81.0
85.0
83.0
77.0
'.-'?:' ',' ".<<
82.0
87.0
83.0
79.0
80.0
86.0
86.0
80.0
Res. 3
79.0
76.0
72.0
96.0
80.0
86.0
84.0
71.0
84.0
81.0
76.0
86.0
80.0
69.0
113.0
80.0
79.0
75.0
81.0
78.0
85.0
85.0
81.0
81.0
77.0
73.0
74.0
82.0
91.0
77.0
75.0
87.0
78.0
77.0
77.0
83.0
86.0
76.0
data submitted
0 = Insufficient
data
x =
Evaluation: Gamma in Water,
Exper.
Sigma
1.53
1.00
9.81
10.12
0.58
1.73
4.51
9.24
1.15
6.08
4.73
1.53
1.00
3.21
v"- 4.93 '
1.53
2.89
4.73
2.31
6.93
0.58
4.00
7.55
3.51
0.58
2.00
6.03
1.53
4.16
2.31
4.73
0.00
2.52
1.53
3.00
2.08
0.00
2.65
Rng anal
(R + SR)
. . : . ...:,..
0.222
0.148
1.486
1.627
0.074
0.222
0.665
1.345
0.148
0.812
0.665
0.222
0.148
0.443
0.665
0.222
0.369
0.665
0.295
0.886
0.074
0.591
1.205
0.517
0.074
0.295
0.886
0.222
0.591
0.295
0.665
0.000
0.369
0^222
0.443
0.295
0.000
0.369
Average
80.67
76.00
77.67
89.67
80.33
87.00
88.33
76.33
83.33
78.00
79.67
84.67
80.00
71.33
116.33
78.33
80.67
71.33
82.33
70.00
85.33
81.00
73.00
80.67
76.67
71.00
80.33
83.33
87.67
78.33
80.33
87.00
80.67
78.67
77.00
83.67
86.00
79.00
TAG SYMBOLS
Determined
to be an outlier
9-Jun-1995
Normalized
(grand-avg)
0.41
-0.60
-0.23
2.36
0.34
1.79
2.07
-0.52
0.99
-0.16
0.20
1.28
0.27
-1.61
8.14
-0.09
0.41
-1.61
0.78
-1.89
1.43
0.49
-1.25
0.41
-0.45
-1.68
0.34
0.99
1.93
-0.09
0.34
1.79
0.41
-0.02
-0.38
1.06
1.57
0.05
15 / 39 1
deviation
(known) Tag
?-
101
0.00
0.36
2.96
0.94
2.38
2.67
0.07
1.59
0.43
'" ' '
0.79
1.88
0.87
-1.01
' 8*71.-*- x '
0.51
1.01
-1.01
1.37
-1.30
2.02
1.08
-0.65
1.01
0.14
-1.08
v ' " ;*
0.94
1.59
2.53
0.51
'
0.94
2.38
1.01
:" \ :
0.58
0.22
1.66
2.17
0.65
IT = Above control limit
II = Below control limit
-------
s^~~ -. .." ,-" --"' - .7-., , ,.,., - .... ' .""" ~
16/39 CRD-LV Performance Evaluation: Gamma
Zinc-65
Lab Res. 1 Res. 2
VR " >'
VS 90.0 89.0
VT , ',,.-,..
VU '- / -
W 80.0 70.0
WD 76.0 82.0
WF 79.0 76.0
WI 53.0 64.0
WJ 84.0 82.0
WK 62.0 79.0
X 95.0 87.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
80.0 5.51 0.738
71.0 5.51 0.738
80.0 3.06 0.443
75.0 2.08 0.295
80.0 13.58 2.892
85.0 1.53 0.222
71.0 8.50 1.486
80.0 7.51 1.205
in Water, 9-Jun-1995
Normalized deviation
Average (grand-avg) (known)
, - _ , , - ,;
86.33 1.64 2.24
-. t " s
73.67 -1.10 -0.51
79.33 0.13 0.72
76.67 -0.45 0.14
65.67 -2.83 -2.24
83.67 1.06 1.66
70.67 -1.75 -1.15
87.33 1.86 2.45
)
Tag
- -
Data sorted by Laboratory Average
Average Tag
28.00 x
36.33 x
37.00 x
41.00 x
65.33
65.67
66.67
67.00
67.67
68.67
69.67
69.67
70.00
70.00
70.67
70.67
71.00
71.00
71.00
71.33
71.33
71.33
71.33
72.00
72.33
73.00
73.00
73.00
73.33
73.67
73.67
3 No data submitted
0 = Insufficient data
V*
Lab Average Tag
BW 73.67
FZ 74.00
BI 74.00
RF 74.00
DZ 74.00
WI 74.33
JG 74.33
PQ 74.67
OM 74.67
RH 74.67
KL 74.67
AY 75.00
TL 75.00.
K 75.33
WK 75.33
CK 75.33
UE 75.67
DL 75.67
AI 75.67
TH 76.00
T 76.00
OK 76.00
BL 76.33
DG 76.33
A 76.67
TR 76.67
QU 76.67
LR 77.00
GE 77.00
W 77.33
DH 77.33
TAG SYMBOLS
Lab Average Tag
AU 77.33
NZ 77.33
JI 77.33
FU 77.33
AH 77.67
RV 77.67
NK 77.67
QW 77.67
QT 77.67
HP 77.67
EW 78.00
PI 78.00
DO 78.00
PV 78.00
DE 78.33
AW 78.33
PB 78.67
KX 78.67
EA 79.00
S 79.00
QX 79.00
LF 79.33
SN 79.33
NJ 79.33
WF 79.33
U 79.33
NP 79.33
VH 79.33
PW 79.33
RR 79.33
Q 79.33
It = Above control
x £= Determined to be an outlier li = Below control
Lab
JE
CA
BM
AK
SC
I
EL
DD
AP
AN
SS
OA
DT
CO
UW
TC
VG
HX
VO
FL
EZ
WD
OZ
NH
M
KH
J
E
D
BO
AJ
limit
limit
'
-------
fr - .. ,.-..-- .. " -. ' - 1
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Zinc-65
Average Tag
79.67
79.67
79.67
79.67
80.00
80.00
80.00
80.33
80.33
80.33
80.33
80.33
80.33
80.33
80.67
80.67
80.67
80.67
80.67
80.67
80.67
80.67
80.67
81.00
81.00
% responding labs
in« -_- ________
IU«
° -6 ' -4
% responding labs
in, -_ _.-_ ___
° -6 ' -4
s No data submitted
0 = Insufficient data
Data sorted by Laboratory Average
Lab
SV
RU
GL
AF
SZ
DM
BC
UY
UN
SF
OL
MQ
JS
HJ
VC
TS
TD
RZ
QZ
MP
1C
EX
AE
TQ
m
Average Tag Lab
81.00 CX
81.00 CP
81.33 N
81.33 GI
81.33 CQ
81.67 RO
81.67 LT
82.33 TI
82.33 CS
82.33 CJ
82.67 R
82.67 PM
82.67 HK
83.00 HL
83.00 BB
83.33 UP
83.33 SR
83.67 WJ
83.67 VI
84.00 EB
84.00 BH
84.33 C
84.67 SX
85.33 TO
85.67 . NO
Average Tag
86.00
86.33
86.33
86.67
86.67
87.00
87.00
87.00
87.33
87.33
87.33
87.67
87.67
88.33
89.33
89.33
89.67
89.67
93.33 ft
95.00 ft
102.00 x
109.00 x
116.33 x
275.00 x
688.67 x
811.33 x
Frequency distribution
.-.I.-- _ _
-2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
. _ _ _. __
II ,- T_- -
. ..l-ijIlltllliH.-. 1.
-2 0 +2 +4
Normalized deviation of the mean from the grand average
TAG SYMBOLS ft a Above
x = Determined to be an outlier li = Below
^\
17/39
Lab
VM
vs
AZ
O
FJ
VA
SI
CC
X
MV
CM
UR
CE
SM
GQ
AL
SD
L
BK
P
ML
BG
TB
LE
JY
BA
I
+6
1
+6
control limit
control limit
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
\ NATIONAL EXPOSURE RESEARCH LABORATORY
| P.O. BOX 93478*.LAS VEGAS, NV 89193-3478
OFFICE OF
RESEARCH AND DEVELOPMENT
A note regarding the Cesium-134 portion of the June 9, 1995
Gamma in Water Performance Evaluation Study:
The difference between the grand average and the known value was
significant for this study. The primary peak for Cs-134 (604.7) is subject
to coincidence summing, resulting in a negative bias if quantified using
commercial mixed standards. Efficiency factors based on these standards do
not correctly quantify peaks subject to summing, and in general produce a
negative bias as was observed. This bias will be minimized if the efficiency
is calculated using a separate Cs-134 standard or a previous PE study.
Please direct any questions to Steve Pia at 702 798-2102.
Recycled/Recyclable Printed with Vegetable OH Based Inks on 100% Recycled Paper (40% Poslconsumer)
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
18/39
Cesium-134 Statistical Summary 191 Participants
The known value of this nuclide is 50.0 pCi/I with an expected precision of 5.0; the control limits
are 41.3 to 58.7; the warning regions are 41.3 to 44.2 and 55.8 to 58.7
2O(1O.5 %) Failed to respond -..,
5(2.6 %) Outliers '
19(9.9 %) Out of control
but not an outlier
Statistic
1O4(54.5 %) Within all limits
Respondents
43(22.5 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
47.37
24.61
605.69
51.95
-5.26
-0.11
45.67
-8.67
-0.18
Grand Avg 45.65
3.99
15.90
8.74
-8.71
-1.09
45.50
-9.00
-1.13
25(14.6 %) More than 3 norm. S.D. .
42(24.6 %) Between 2 and 3 norm. S.D
. 43(25.1 %) Within 1 norm. S.D.
of known value
61(35.7 %) Between 1 and 2 norm. S.D.
-------
19/39 CRD-L V Performance
Evaluation
Gamma in Water, 9-«Jun-1995
Cesium-134
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CC
CE
CG
CJ
CK
CM
CO
CP
CQ
cs
ex
D
DD
DE
DG
DH
DL
Res. 1
38.0
50.0
45.0
42.0
42.0
43.0
46.0
44.0
51.0
45.0
44.0
40.0
49.0
55.0
49.0
47.0
43.0
61.0
48.0
70,0
53.0
43.0
44.0
48.0
35.0
50.0
47.0
48.0
50.0
W
46.0
45.0
50.0
45.0
46.0
45.0
45.0
47.0
42.0
46.0
45.0
45.0
42.0
47.0
Res. 2
41.0
50.0
46.0
43.0
42.0
43.0
44.0
46.0
47.0
48.0
43.0
42.0
47.0
61.0
47.0
48.0
42.0
48.0
50.0
69.0
53.0
45.0
45.0
46.0
39.0
50.0
45.0
47.0
49.0
1.0
45.0
44.0
48.0
47.0
47.0
48.0
46.0
47.0
43.0
46.0
45.0
46.0
43.0
45.0
Res. 3
41.0
43.0
47.0
42.0
42.0 ^
43.0 '
45.0
45.0
48.0
50.0
45.0
40.0
48.0
59.0
48.0
48.0
43.0
68.0
47.0
59.0
52.0
43.0
45.0
48.0
36.0
49.0
46.0
48.0
49.0
1.0
49.0
44.0
46.0
46.0
47.0
50.0
42.0
46.0
48.0
47.0
44.0
44.0
43.0
45.0
= No data submitted
0 3
>C;- -
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
1.73
4.04
1.00
0.58
0.00
0.00
1.00
1.00
2.08
2.52
1.00
1.15
1.00
3.06
1.00
0.58
0.58
10.15
1.53
6.08
0.58
1.15
0.58
1.15
2.08
0.58
1.00
0.58
0.58
0.00
2.08
0.58
2.00
1.00
0.58
2.52
2.08
0.58
3.21
0.58
0.58
1.00
0.58
1.15
0.354
0.827
0.236
0.118
0.000
0.000
0.236
0.236
0.473
0.591
0.236
0.236
0.236
0.709
0.236
0.118
0.118
3.596
0.354
1.570
0.118
0.236
0.118
0.236
0.473
0.118
0.236
0.118
0,118
0.000
0.473
0.118
0.473
0.236
0.118
0.591
0.473
0.118
0.709
0.118
0.118
0.236
0.118
0.236
40.00
47.67
46.00
42.33
42.00
43.00
45.00
45.00
48.67
47.67
44.00
40.67
48.00
58.33
48.00
47.67
42.67
59.00
48.33
66.00
52.67
43.67
44.67
47.33
36.67
49.67
46.00
47.67
49.33
1.00
46.67
44.33
48.00
46.00
46.67
47.67
44.33
46.67
44.33
46.33
44.67
45.00
42.67
45.67
TAG SYMBOLS
Determined
to be an
outlier
-1.96
0.70
0.12
-1.15
-1.26
-0.92
-0.22
-0.22
1.05
0.70
-0.57
-1.73
0.82
4.39
0.82
0.70
-1.03
4.63
0.93
7.05
2.43
-0.69
-0.34
0.58
-3.11
1.39
0.12
0.70
1.28
-3.46 11
-0.81
-1.39
-2.66
-2.77
-2.42
-1.73
-1.73
-0.46
-0.81
-2.08
-3.23 11
-0.69
2.89
-0.69
-0.81
-2.54
3.12 ft
-0.58
5.54 x
0.92
-2.19
-1.85
-0.92
-4.62 &
-0.12
-1.39
-0.81
-0.23
-16,47 -16.97 x
0.35
-0.45
0.82
0.12
0.35
0.70
-0.45
0.35
-0.45
0.24
-0.34
-0.22
-1.03
0.01
ft = Above
li = Below
-1.15
-1.96
-0.69
-1.39
-1.15
-0.81
-1.96
-1.15
-1.96
-1.27
-1.85
-1.73
-2.54
-1.50
control limit
control limit
'
-------
CRD-LV Performance
Evaluation
: Gamma in Water,
9-Jun-1995
20 / 39 1
Cesium-134
Lab
DM
DO
DT
DZ
E
EA
EB
EL
EN
EW
EX
EZ
FJ
FK
FL
FU
FZ
GE
GI
GL
GQ
m
HJ
HK
HL
HP
HX
I
1C
J
JE
JG
JI
JS
JY
K
KH
KL
KX
L
LE
LF
LR
LT
M
=
0 =
Res. 1
47.0
43.0
46.0
36.0
46.0
49.0
42.0
49.0
47.0
46.0
45.0
48.0
44.0
45.0
25;0
44.0
41.0
40.0
54.0
52.0
48.0
46.0
46.0
46.0
43.0
48.0
55.0
51.0
44.0
39.0
44.0
49.0
346.6 '
41.0
41.0
44.0
45.0
50.0
62.0
45.0
54.0
49.0
43.0
Res. 2
45.0
49.0
43.0
40.0
47.0
48.0
42.0
44.0
46.0
49.0
48.0
49.0
^v^v.-vj-
46.0
46.0
' C 24.0'
47.0
43.0
41.0
57.0
52.0
52.0
48.0
46.0
47.0
42.0
49.0
53.0
51.0
43.0
40.0
43.0
47.0
1 383.0
41.0
39.0
41.0
51.0
51.0
51.0
48.0
52.0
46.0
42.0
Res. 3
43.0
40.0
46.0
38.0
46.0
44.0
42.0
47.0
47.0
45.0
48.0
49.0
... ;.....!,
45.0
44.0
24.6
45.0
43.0
41.0
58.0
52.0
48.0
47.0
46.0
46.0
44.0
40.0
51.0
50.0
42.0
42.0
45.0
49.0
: 343;0
41.0
40.0
42.0
44.0
52.0
53.0
45.0
49.0
49.0
43.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
2.00
4.58
1.73
2.00
0.58
2.65
0.00
2.52
0.58
2.08
1.73
0.58
1.00
1.00
0.58
1.53
1.15
0.58
2.08
0.00
2.31
1.00
0.00
0.58
1.00
4.93
2.00
0.58
1.00
1.53
1.00
1.15
22.28
0.00
1.00
1.53
3.79
1.00
5.86
1.73
2.52
1.73
0.58
Rng anal
(R + SR)
0.473
1.120
0.354
0.473
0.118
0.591
0.000
0.591
0.118
0.473
0.354
0.118
. :..-.;.- -
0.236
0.236
6.118
0.354
0.236
0.118
0.473
0.000
0.473
0.236
0.000
0.118
0.236
1.120
0.473
0.118
0.236
0.354
0.236
0.236
8;096
0.000
0.236
0.354
0.827
0.236
1.570
0.354
0.591
0.354
0.118
Normalized deviation
Average
45.00
44.00
45.00
38.00
46.33
47.00
42.00
46.67
46.67
46.67
47.00
48.67
45.00
45.00
24.33
45.33
42.33
40.67
56.33
52.00
49.33
47.00
46.00
46.33
43.00
45.67
53.00
50.67
43.00
40.33
44.00
48.33
357.33
41.00
40.00
42.33
46.67
51.00
55.33
46.00
51.67
48.00
42.67
TAG SYMBOLS
Determined
to be an outlier
(grand-avg)
-0.22
-0.57
-0.22
-2.65
0.24
0.47
-1.26
0.35
v
0.35
0.35
0.47
1.05
-0.22
-0.22
-7.38
-0.11
-1.15
-1.73
3.70
2.20
1.28
0.47
0.12
0.24
-0.92
0.01
2.55
1.74
-0.92
-1.84
-0.57
0.93
107.97
-1.61
-1.96
-1.15
0.35
1.85
3.36
0.12
2.09
0.82
-1.03
(known) Tag
-1.73
-2.08
-1.73
-4.16 11
-1.27
-1.04
-2.77
-1.15
,\ r "
-1.15
-1.15
-1.04
-0.46
;;;;r . .: .
-1.73
-1.73
-8.89 x
-1.62
-2.66
-3.23 U
2.19
0.69
-0.23
-1.04
-1.39
-1.27
-2.42
-1.50
1.04
0.23
-2.42
-3.35 U
-2.08
-0.58
106.46 x
-3.12 U
-3.46 U
-2.66
-1.15
0.35
1.85
-1.39
0.58
-0.69
-2.54
1T = Above control limit
li = Below control limit
-------
21 / 39 CRD-LV Performance
Cesium-134
Lab Res. 1
MA
ML
MP
MQ
MV
"MY
N
NH
NJ
NK
NO
NP
NZ
O
OA
OB
OK
OL
OM
OZ
P
PB
>PE
PI
PM
PQ
PU
PV
PW
9
QP
QT
QU
QW
QX
QZ
R
RF
RH
RO
RR
RU
RV
=
0 5=
' * v "
53.0
46.0
45.0
50.0
48.0
44.0
42.0
41.0
43.0
42.0
42.0
51.0
45.0
42.0
57.0
42.0
43.0
52.0
45.0
43.0
45.0
44.0
34.0
47.0
43.0
52.0
44.0
40.0
41.0
45.0
42.0
47.0
48.0
44.0
45.0
44.0
50.0
48.0
Res. 2
54.0
48.0
41.0
51.0
-
47.0
43.0
44.0
35.0
46.0
43.0
29.0
51.0
44.0
44.0
53.0
42.0
45.0
53.0
45.0
41.0
43.0
37.0
40.0
46.0
43.0
46.0
44.0
40.0
38.0
45.0
42.0
47.0
48.0
44.0
44.0
42.0
50.0
48.0
Res. 3
52.0
47.0
46.0
50.0
44.0
43.0
43.0
39.0
50.0
41.0
42.0
51.0
45.0
41.0
50.0
42.0
42.0
53.0
45.0
44.0
44.0
39.0
39.0
46.0
46.0
46.0
43.0
41.0
39.0
46.0
41.0
47.0
48.0
44.0
46.0
42.0
43.0
50.0
No data submitted
Insufficient
data
x =
Evaluation
Gamma in Water, 9-Jun-1995
I
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
1.00
1.00
2.65
0.58
2.08
0.58
1.00
3.06
3.51
1.00
7.51
0.00
0.58
1.53
3.51
0.00
1.53
0.58
0.00
1.53
1.00
3.61
3.21
0.58
1.73
3.46
0.58
0.58
1.53
0.58
0.58
0.00
0.00
0.00
1.00
1.15
4.04
1.15
0.236
0.236
0.591
0.118
0.473
0.118
0.236
0.709
0.827
0.236
2.020
0.000
0.118
0.354
0.827
0.000
0.354
0.118
0.000
0.354
0.236
0.827
0.709
0.118
0.354
0.709
0.118
0.118
0.354
0.118
0.118
0.000
0.000
0.000
0.236
0.236
0.827
0.236
53.00
47.00
44.00
50.33
T ' - "
46.33
43.33
43.00
38.33
46.33
42.00
37.67
51.00
44.67
42.33
53.33
42.00
43.33
52.67
45.00
42.67
44.00
40.00
37.67
46.33
44.00
48.00
43.67
40.33
39.33
45.33
41.67
47.00
48.00
44.00
45.00
42.67
47.67
48.67
TAG SYMBOLS
Determined
to be an
outlier
2.55
0.47
-0.57
1.62
0.24
-0.80
-0.92
-2.53
0.24
-1.26
-2.76
1.85
-0.34
-1.15
2.66
-1.26
-0.80
2.43
-0.22
-1.03
-0.57
-1.96
-2.76
0.24
-0.57
0.82
-0.69
-1.84
-2.19
-0.11
-1.38
0.47
0.82
-0.57
-0.22
-1.03
0.70
1.05
ft = Above
11 = Below
1.04
-1.04
-2.08
0.12
, - , * i
-1.27
-2.31
-2.42
-4.04 U
-1.27
-2.77
-4.27 U
0.35
-1.85
-2.66
1.15
-2.77
-2.31
0.92
-1.73
*
-2.54
-2.08
-3.46 11
- -
-4.27 li
-1.27
-2.08
-0.69
-2.19
-3.35 li
-3.70 11
-1.62
-2.89
-1.04
-0.69
-2.08
-1.73
-2.54
-0.81
-0.46
control limit
control limit
-------
CRD-LV Performance
Cesium-134
Lab Res. 1
RX
RZ
S
sc
SD
SF
SI
SM
SN
SR
ss
ST
SV
SX
sz
T
TB
TC
TD
TE
TH
TI
TL
TO
TQ
TR
TS
U
UE
UM
UN
UP
UR
UT
UW
UX
UY
VA
VC
VE
VG
VH
VI
VM
VO
=
0 =
s
46.0
45.0
41.0
47.0
46.0
47.0
53.0
50.0
48.0
49.0
41.0
43.0
44.0
45.0
76.0
47.0
45.0
43.0
48.0
42.0
55.0
44.0
33.0
48.0
48.0
49.0
46.0
44.0
52.0
48.0
43.0
46.0
49.0
44.0
41.0
39.0
49.0
50.0
Res. 2
46.0
45.0
47.0
47.0
46.0
50.0
49.0
52.0
46.0
49.0
41.0
43.0
45.0
45.0
75.0
40.0
48.0
44.0
48.0
44.0
54.0
44.0
34.0
45.0
48.0
51.0
39.0
44.0
53.0
49.0
44.0
47.0
46.0
i':,. '" :
43.0
41.0
39.0
52.0
46.0
Res. 3
46.0
45.0
45.0
50.0
43.0
52.0
48.0
50.0
46.0
47.0
39.0
42.0
44.0
47.0
73.0
45.0
44.0
44.0
47.0
47.0
53.0
44.0
34.0
46.0
47.0
49.0
51.0
42.0
53.0
48.0
41.0
45.0
47.0
43.0
43.0
37.0
51.0
50.0
No data submitted
Insufficient
data
x =
Evaluation
Exper.
Sigma
0.00
0.00
3.06
1.73
1.73
2.52
2.65
1.15
1.15
1.15
1.15
0.58
0.58
1.15
1.53
3.61
2.08
0.58
0.58
2.52
1.00
0.00
0.58
1.53
0.58
1.15
6.03
1.15
0.58
0.58
1.53
1.00
1.53
. :. : ., , ,
0.58
1.15
1.15
1.53
2.31
: Gamma in Water, 9-Jun-1995
22/39
Rng anal Normalized deviation
(R + SR) Average fgrand-avg) (known) Tag
0.000
0.000
0.709
0.354
0.354
0.591
0.591
0.236
0.236
0.236
0.236
0.118
0.118
0.236
0.354
0.827
0.473
0.118
0.118
0.591
0.236
0.000
0.118
0.354
0.118
0.236
1.795
0.236
0.118
0.118
0.354
0.236
0.354
0.118
0.236
0.236
0.354
0.473
"
46.00
45.00
44.33
48.00
45.00
49.67
50.00
50.67
46.67
48.33
40.33
42.67
44.33
45.67
74.67
44.00
45.67
43.67
47.67
44.33
54.00
44.00
33.67
46.33
47.67
49.67
-
45.33
43.33
52.67
48.33
42.67
46.00
47.33
43.33
41.67
38.33
50.67
48.67
TAG SYMBOLS
Determined
to be an
outlier
0.12
-0.22
-0.45
0.82
-0.22
1.39
1.51
1.74
0.35
0.93
-1.84
-1.03
-0.45
0.01
10.05
-0.57
0.01
-0.69
0.70
-0.45
2.89
-0.57
-4.15
0.24
0.70
1.39
-0.11
-0.80
2.43
,
0.93
-1.03
0.12
0.58
-0.80
-1.38
-2.53
1.74
1.05
ft = Above
U = Below
- .
-1.39
-1.73
-1.96
-0.69
-1.73
-0.12
0.00
0.23
-1.15
-0.58
-3.35 It
-2.54
-1.96
-1.50
8.54 X
-2.08
-1.50
. /
-2.19
-0.81
-1.96
1.39
-2.08
-5.66 U
-1.27
-0.81
-0.12
V
-1.62
-2.31
0.92
-0.58
-
-2.54
-1.39
-0.92
[}.: .
-2.31
-2.89
-4.04 li
0.23
-0.46
control limit
control limit
-------
23/39 CRD-LV Performance Evaluation: Gamma
Cesium- 134
Lab Res. 1 Res. 2
VB
VS 44.0 41.0
,VT '' ' ''.'"
vu
W 43.0 43.0
WD 42.0 44.0
WF 44.0 41.0
WI 39.0 41.0
WJ 46.0 45.0
WK 44.0 45.0
X 50.0 49.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
43.0 1.53 0.354
43.0 0.00 0.000
41.0 1.53 0.354
39.0 2.52 0.591
38.0 1.53 0.354
47.0 1.00 0.236
45.0 0.58 0.118
48.0 1.00 0.236
in Water, 9-Jun-1995
Normalized deviation
Average (grand-avg) (known)
42.67 -1.03 -2.54
j ' "" s , !" > **
43.00 -0.92 -2.42
42.33 -1.15 -2.66
41.33 -1.49 -3.00
39.33 -2.19 -3.70
46.00 0.12 -1.39
44.67 -0.34 -1.85
49.00 1.16 -0.35
^
Tag
\» ,
*
11
Data sorted by Laboratory Average
Average Tag
1.00 x
24.33 x
33.67 1).
36.67 U
37.67 li
37.67 U
38.00 U
38.33 U
38.33 U
39.33 U
39.33 U
40.00 li
40.00 U
40.00 U
40.33 U
40.33 li
40.33 H
40.67 U
40.67 li
41.00 11
41.33
41.67
41.67
42.00
42.00
42.00
42.00
42.33
42.33
42.33
42.33
s No data submitted
0 = Insufficient data
Lab Average Tag
CG 42.33
FZ 42.67
TR 42.67
BW 42.67
PV 42.67
NZ 42.67
DZ 42.67
VI 42.67
NK 42.67
WI 43.00
QW 43.00
PQ 43.00
KH 43.00
A 43.00
SV 43.33
QU 43.33
JG 43.33
GL 43.33
AW 43.67
K 43.67
WF 43.67
VH 44.00
QZ 44.00
OM 44.00
NP 44.00
EB 44.00
AI 44.00
WD 44.00
OK 44.00
KL 44.00
GI 44.33
TAG SYMBOLS
Lab Average Tag
AH 44.33
VS 44.33
UY 44.33
SX 44.33
RR 44.33
PI 44.67
M 44.67
DH 44.67
BC 44.67
W 45.00
NJ 45.00
JE 45.00
HX 45.00
AJ 45.00
VG 45.00
UP 45.00
OZ 45.00
NH 45.00
TH 45.00
QT 45.00
BL 45.33
TQ 45.33
TC 45.33
RH 45.67
Q 45.67
PM 45.67
MQ 45.67
JI 46.00
DO 46.00
AU 46.00
TL 46.00
It = Above control
x = Determined to be an outlier U = Below control
Lab
SZ
sc
D
CS
CK
WK
OA
DE
BM
SF
S
RO
PB
FU
FL
DT
DM
DG
AL
AK
UN
QX
GE
TD
T
I
DL
WJ
VA
RZ
LF
limit
limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Cesium- 134
Average Tag
46.00
46.00
46.00
46.00
46.33
46.33
46.33
46.33
46.33
46.33
46.33
46.67
46.67
46.67
46.67
46.67
46.67
46.67
46.67
47.00
47.00
47.00
47.00
47.00
47.33
47.33
% responding labs
10-
-6 -4
% responding labs
10-
V. ' \
-6 -4
s No data submitted
0 s Insufficient data
Data sorted by Laboratory Average
Lab
HL
CO
CA
AF
TS
PW
NO
N
HP
E
DD
SR
KX
EX
EW
EL
CX
CP
CJ
R
MP
HK
EZ
EA
VC
BO
Average Tag Lab
47.67 U
47.67 TI
47.67 RU
47.67 CQ
47.67 CC
47.67 BB
47.67 AP
47.67 AE
48.00 SD
48.00 RF
48.00 QP
48.00 LT
48.00 CM
48.00 BA
48.00 AY
48.33 UW
48.33 SS
48.33 JS
48.33 BH
48.67 VO
48.67 RV
48.67 FJ
48.67 AN
49.00 X
49.33 . HJ
49.33 CE
Average Tag
49.67
49.67
49.67
50.00
50.33
50.67
50.67
50.67
51.00
51.00
51.67
52.00
52.67
52.67
52.67
53.00
53.00
53.33
54.00
55.33
56.33
58.33
59.00 ft
66.00 x
74.67 x
357.33 x
Frequency distribution
hll 1 . ....
.llllllllll ... _
-2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
. ! - - -
: : ;v.v_ .il.llt.lllii..-. __ __
I T I T 72 V4
Normalized deviation of the mean from the grand average
TAG SYMBOLS IT s Above
x s Determined to be an outlier JJ- = Below
24/39 I
Lab
UE
SI
C
SM
MV
VM
SN
J
O
L
LR
ffl
UR
P
BK
ML
1C
OL
TO
LE
GQ
AZ
BG
BI
TB
JY
««
+6
m
' +6
control limit
control limit
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
25/39
Cesium-137 Statistical Summary 191 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
19(9.9 %) Failed to respond -..^
1O(5.2%) Outliers '
Statistic
151(79.1 %) Within all limits
Respondents
11 (5.8 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
38.14
23.01
529.37
60.32
8.98
0.14
35.67
1.90
0.03
Grand Avg 35.49
2.90
8.42
8.18
1.40
0.17
35.33
0.95
0.11
1O(5.8 %) More than 3 norm. S.D. -.
11 (6.4 %) Between 2 and 3 norm. S.D. '
113(65.7 %) Within 1 norm. S.D.
of known value
38(22.1 %) Between 1 and 2 norm. S.D.
-------
26 / 39 CRD-LV Performance
Evaluation
Gamma in Water, 9-Jun-1995
Cesium-137
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
BN
BO
BW
i.c
CA
CC
CE
CG
CJ
CK
CM
CO
CP
CQ
CS
cx
D
DD
DE
DG
DH
m,
=
V
Res. 1
30.0
38.0
33.0
33.0
32.0
34.0
36.0
26.0
34.0
35.0
35.0
38.0
30.0
41.0
29.0
35.0
34.0
40.0
33.0
25.0
43.0
34.0
35.0
35.0
36.0
56.0
36.0
36.0
41.0
68.0
37.0
38.0
38.0
40.0
35.0
43.0
35.0
39.0
34.0
36.0
34.0
44.0
34.0
32.0
Res. 2
34.0
38.0
37.0
34.0
31.0
34.0
36.0
22.0
38.0
36.0
33.0
38.0
32.0
34.0
31.0
34.0
35.0
31.0
39.0
31.0
43.0
34.0
36.0
34.0
32.0
53.0
36.0
35.0
40.0
53.0
37.0
32.0
36.0
41.0
34.0
39.0
37.0 .
36.0
34.0
36.0
34.0
49.0
34.0
37.0
Res. 3
33.0
37.0
36.0
34.0
32.0
37.0
35.0
23.0
35.0
37.0
36.0
34.0
34.0
43.0
31.0
35.0
35.0
24.0
38.0
37.0
42.0
34.0
35.0
36.0
29.0
61.0
38.0
35.0
38.0
45.0
39.0
31.0
33.0
38.0
35.0
41.0
35.0
39.0
36.0
36.0
34.0
45.0
34.0
33.0
No data submitted
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
2.08
0.58
2.08
0.58
0.58
1.73
0.58
2.08
2.08
1.00
1.53
2.31
2.00
4.73
1.15
0.58
0.58
8.02
3.21
6.00
0.58
0.00
0.58
1.00
3.51
4.04
1.15
0.58
1.53
11.68
1.15
3.79
2.52
1.53
0.58
2.00
1.15
1.73
1.15
0.00
0.00
2.65
0.00
2.65
0.473
0.118
0.473
0.118
0.118
0.354
0.118
0.473
0.473
0.236
0.354
0.473
0.473
1.120
0.236
0.118
0.118
2.695
0.709
1.795
0.118
0.000
0.118
0.236
0.827
0.945
0.236
0.118
0.354
4.271
0.236
0.827
0.591
0.354
0.118
0.473
0.236
0.354
0.236
0.000
0.000
0.591
0.000
0.591
32.33
37.67
35.33
33.67
31.67
35.00
35.67
23.67
35.67
36.00
34.67
36.67
32.00
39.33
30.33
34.67
34.67
31.67
36.67
31.00
42.67
34.00
35.33
35.00
32.33
56.67
36.67
35.33
39.67
55.33
37.67
33.67
35.67
39.67
34.67
41.00
35.67
38.00
34.67
36.00
34.00
46:00
34.00
34.00
TAG SYMBOLS
Determined
to be an
outlier
-1.09
0.75
-0.05
-0.63
-1.32
-0.17
0.06
-410
0.06
0.18
-0.29
0.41
-1.21
1.33
-1.79
-0.29
-0.29
-1.32
0.41
-1.56
2.49
-0.52
-0.05
-0.17
-1.09
7.34
0.41
-0.05
1.45
6.87
0.75
-0.63
0.06
1.45
-0.29
1.91
0.06
0.87
-0.29
0.18
-0.52
3.64
-0.52
-0.52
ft s Above
11 s Below
-0.92
0.92
0.12
-0.46
-1.15
0.00
0.23
-3.93 x
0.23
0.35
-0.12
0.58
-1.04
1.50
-1.62
-0.12
-0.12
-1.15
0.58
-1.39
2.66
-0.35
0.12
0.00
-0.92
7.61 x
0.58
0.12
1.62
7.04 x
0.92
-0.46
0.23
1.62
-0.12
2.08
0.23
1.04
-0.12
0.35
-0.35
3.81 x
-0.35
-0.35
control limit
control limit
s
-------
CRD-LV Performance
Evaluation
: Gamma in Water, 9-Jun-1995
27 / 39 j
Cesium-137
Lab
DM
DO
DT
DZ
E
EA
EB
EL
EN
EW
EX
EZ
FJ
FK
FL
FU
FZ
GE
GI
GL
GQ
HI
HJ
HK
HL
HP
HX
I
1C
J
JE
JG
JI
JS
JY
K
KH
KL
KX
L
LE
LF
LR
LT
M
=
0 5
Res. 1
35.0
28.0
36.0
43.0
37.0
33.0
36.0
34.0
35.0
36.0
41.0
37.0
35.0
33.0
18.0
34.0
35.0
36.0
37.0
39.0
35.0
38.0
37.0
39.0
35.0
32.0
39.0
36.0
34.0
32.0
35.0
37.0
312.0
34.0
38.0
34.0
34.0
39.0
'''"'''' l?56;6:;r;;
32.0
36.0
38-0
34.0
Res. 2
36.0
29.0
34.0
38.0
35.0
32.0
36.0
35.0
34.0
33.0
37.0
33.0
<
37.0
33.0
17.0
32.0
35.0
35.0
40.0
43.0
33.0
36.0
37.0
37.0
35.0
34.0
38.0
35.0
34.0
35.0
37.0
37.0
296.0
32.0
37.0
34.0
35.0
39.0
^;::f45Xf
36.0
35.0
35.0
34.0
Res. 3
36.0
30.0
41.0
41.0
38.0
33.0
36.0
35.0
34.0
34.0
38.0
37.0
36.0
32.0
17.0
33.0
36.0
33.0
40.0
48.0
34.0
35.0
37.0
37.0
36.0
37.0
38.0
35.0
34.0
33.0
33.0
35.0
335.0
33.0
37.0
32.0
34.0
39.0
:r' 42 JO
37.0
37.0
38.0
34.0
No data submitted
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
0.58
1.00
3.61
2.52
1.53
0.58
0.00
0.58
;,., '
0.58
1.53
2.08
2.31
1.00
0.58
0.58
1.00
0.58
1.53
1.73
4.51
1.00
1.53
0.00
1.15
0.58
2.52
0.58
0.58
0.00
1.53
2.00
1.15
19.60
1.00
0.58
1.15
0.58
0.00
' 7.37
2.65
1.00
1.73
0.00
0.118
0.236
0.827
0.591
0.354
0.118
0.000
0.118
0.118
0.354
0.473
0.473
0.236
0.118
0.118
0.236
0.118
0.354
0.354
1.120
0.236
0.354
0.000
0.236
0.118
0.591
0.118
0.118
0.000
0.354
0.473
0.236
7.871
0.236
0.118
0.236
0.118
0.000
2.245
0.591
0.236
0.354
0.000
35.67
29.00
37.00
40.67
36.67
32.67
36.00
34.67
34.33
34.33
38.67
35.67
N s
36.00
32.67
17.33
33.00
35.33
34.67
39.00
43.33
34.00
36.33
37.00
37.67
35.33
34.33
38.33
35.33
34.00
33.33
35.00
36.33
314.33
33.00
37.33
33.33
34.33
39.00
'.' ' '7>47;67 '
35.00
36.00
37.00
34.00
TAG SYMBOLS
Determined
to be an
outlier
0.06
-2.25
0.52
1.79
0.41
-0.98
0.18
-0.29
-0.40
-0.40
1.10
0.06
x \
0.18
-0.98
-6.29
-0.86
-0.05
-0.29
1.22
2.72
-0.52
0.29
0.52
0.75
-0.05
-0.40
0.99
-0.05
-0.52
-0.75
-0.17
0.29
96.59
-0.86
0.64
-0.75
-0.40
1.22
4.22
-0.17
0.18
0.52
-0.52
ft & Above
!! & Below
0.23
-2.08
0.69
1.96
0.58
-0.81
0.35
-0.12
'T;:v:';'
-0.23
-0.23
1.27
0.23
0.35
-0.81
-6.12 X
-0.69
0.12
-0.12
1.39
2.89
-0.35
0.46
0.69
0.92
0.12
-0.23
1.15
0.12
-0.35
-0.58
0.00
0.46
96.76 x
-0.69
0.81
-0.58
-0.23
1.39
439 x
0.00
0.35
0.69
-0.35
control limit
control limit
-------
28 / 39 CRD-LV Performance
Cesium-137
Lab Res. 1
MA
^ML
MP
MQ
MV
MY
N
NH
NJ
NK
NO
NP
NZ-
O
OA
OB
OK
OL
OM
OZ
P
PB
PE
PI
PM
PQ
PU
PV
PW
Q
QJ
QP
QT
QU
QW
QX
QZ
R
RF
RH
RO
RR
RU
RV
* .- ^
65.0
37.0
37.0
44.0
36.0
35.0
33.0
26.0
35.0
34.0
30.0
39.0
33.0
33.0
28.0
32.0
36.0
35.0
41.0
35.0
35.0
35.0
30.0
29.0
35.0
34.0
38.0
34.0
26.0
27.0
39.0
34.0
36.0
32.0
36.0
36.0
35.0
39.0
42.0
Res. 2
i. .. ' ', ,..., '
60.0
35.0
47.0
42.0
35.0
38.0
35.0
33.0
36.0
33.0
27.0
39.0
33.0
34.0
27.0
38.0
36.0
36.0
40.0
35.0
33.0
42.0
33.0
33.0
35.0
35.0
41.0
33.0
28.0
28.0
39.0
35.0
38.0
32.0
34.0
36.0
33.0
41.0
46.0
Res. 3
54.0
37.0
36.0
43.0
38.0
36.0
34.0
33.0
38.0
32.0
29.0
40.0
36.0
32.0
26.0
34.0
35.0
34.0
42.0
35.0
34.0
36.0
30.0
34.0
35.0
36.0
40.0
34.0
27.0
27.0
38.0
34.0
39.0
31.0
33.0
36.0
35.0
34.0
34.0
= No data submitted
0 s
Insufficient
data
X 5
Evaluation: Gamma in Water, 9-Jun-1995
^
Exper. Rug anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
6,51
1.15
6.08
1.00
1.53
1.53
1.00
4.04
1.53
1.00
1.53
0.58
1.73
1.00
1.00
3.06
0.58
1.00
1.00
0.00
1.00
3.79
1.73
2.65
0.00
1.00
1.53
0.58
1.00
0.58
0.58
0.58
1.53
0.58
1.53
0.00
1.15
3.61
6.11
1.570
0.236
1.570
0.236
0.354
0.354
0.236
0.827
0.354
0.236
0.354
0.118
0.354
0.236
0.236
0.709
0.118
0.236
0.236
0.000
0.236
0.827
0.354
0.591
0.000
0.236
0.354
0.118
0.236
0.118
0.118
0.118
0.354
0.118
0.354
0.000
0.236
0.827
1.795
59.67
36.33
40.00
43.00
; f
36.33
36.33
34.00
30.67
36.33
33.00
28.67
39.33
34.00
33.00
27.00
34.67
35.67
35.00
41.00
35.00
34.00
37.67
31.00
32.00
35.00
35.00
39.67
33.67
27.00
27.33
38.67
34.33
37.67
31.67
34.33
36.00
34.33
38.00
40.67
TAG SYMBOLS
Determined
to be an
outlier
8.38,
0.29
1.56
2.60
0.29
0.29
-0.52
-1.67
0.29
-0.86
-2.36
1.33
-0.52
-0.86
-2.94
-0.29
0.06
-0.17
1.91
-0.17
-0.52
0.75
-1.56
-1.21
-0.17
-0.17
1.45
-0.63
-2.94
-2.83
1.10
-0.40
0.75
-1.32
-0.40
0.18
-0.40
0.87
1.79
ft = Above
11 = Below
8.54 , x
0.46
1.73
2.77
"
0.46
0.46
-0.35
-1.50
0.46
-0.69
-2.19
1.50
-0.35
-0.69
-2.77
-0.12
0.23
0.00
2.08
0.00
-0.35
0.92
-1.39
-1.04
0.00
0.00
1.62
-0.46
-2.77
-2.66
1.27
-0.23
0.92
-1.15
-0.23
0.35
-0.23
1.04
1.96
control limit
control limit
-------
CRD-LV Performance
Cesium-137
Lab Res. 1
RX
RZ
S
sc
SD
SF
SI
SM
SN
SR
ss
ST
SV
sx
sz
T
TB
TC
TD
TE
TH
TI
TL
TO
TQ
TR
TS
U
UE
UM
UN
UP
UR
UT
UW
UX
UY
VA
VC
VE
VG
VH
VI
VM
VO
=
0 3
33.0
36.0
32.0
36.0
41.0
37.0
36.0
39.0
35.0
40.0
35.0
33.0
36.0
36.0
58.0
36.0
35.0
:' ' ''' '*:'S':'
34.0
36.0
26.0
38.0
35.0
33.0
36.0
36.0
34.0
41.0
36.0
34.0
33.0
30.0
34.0
37.0
- -> ' i -?. -'''
31.0
33.0
36.0
37.0
38.0
Res. 2
31.0
35.0
37.0
41.0
39.0
39.0
40.0
41.0
34.0
37.0
37.0
32.0
36.0
36.0
.^v?63tO:;-"
35.0
36.0
::;::*:. :.> :.:.-..-' '& - " .''
34.0
36.0
27.0
38.0
36.0
36.0
32.0
35.0
35.0
32.0
37.0
39.0
36.0
31.0
35.0
38.0
:. '«.".' '"*"'.'"
300
32.0
36.0
37.0
40.0
Res. 3
32.0
35.0
37.0
43.0
37.0
37.0
39.0
37.0
38.0
42.0
39.0
33.0
36.0
36.0
53.0
40.0
32.0
-::''\ ': ' ;f :. """
35.0
37.0
34.0
38.0
34.0
38.0
38.0
34.0
36.0
41.0
35.0
39.0
" *U'-v .
36.0
33.0
38.0
38.0
.;. .,;. ;-,.- -v
32.0
32.0
36.0
37.0
38.0
No data submitted
Insufficient
data
x =
Evaluation
Gamma in Water, 9-Jun-1995
29/39
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
:. - - :'. :-' . ' : '
1.00
0.58
2.89
3.61
2.00
1.15
2.08
2.00
2.08
2.52
2.00
0.58
0.00
0.00
2.89
2.65
2.08
0.58
0.58
4.36
0.00
1.00
2.52
3.06
1.00
1.00
5.20
1.00
2.89
1.73
1.53
2.08
0.58
"'. .'!:'.' . '
1.00
0.58
0.00
0.00
1.15
0.236
0.118
0.591
0.827
0.473
0.236
0.473
0.473
0.473
0.591
0.473
0.118
0.000
0.000
0.591
0.591
0.473
0.118
0.118
0.945
0.000
0.236
0.591
0.709
0.236
0.236
1.120
0.236
0.591
0.354
0.354
0.473
0.118
0.236
0.118
0.000
0.000
0.236
32.00
35.33
35.33
40.00
39.00
37.67
38.33
39.00
35.67
39.67
37.00
32.67
36.00
36.00
54.67
37.00
34.33
34.33
36.33
29.00
38.00
35.00
35.67
35.33
35.00
35.00
38.00
36.00
37.33
35.00
31.33
35.67
37.67
-
31.00
32.33
36.00
37.00
38.67
TAG SYMBOLS
Determined
to be an
outlier
-1.21
-0.05
-0.05
1.56
1.22
0.75
0.99
1.22
0.06
1.45
0.52
-0.98
0.18
0.18
6.64
0.52
-0.40
-0.40
0.29
-2.25
0.87
-0.17
0.06
-0.05
-0.17
-0.17
0.87
0.18
0.64
-0.17
-1.44
0.06
0.75
x
-1.56
-1.09
0.18
0.52
1.10
ft = Above
& = Below
,;.../. _ ,\, .-. 9
-1.04
0.12
0.12
1.73
1.39
0.92
1.15
1.39
0.23
1.62
0.69
-0.81
0.35
0.35
6,81; X
0.69
-0.23
..:..;.;;,. .: ..'
-0.23
0.46
-2.08
1.04
0.00
0.23
0.12
0.00
0.00
1.04
0.35
0.81
0.00
: «
-1.27
0.23
0.92
-1.39
-0.92
0.35
0.69
1.27
control limit
control limit
-------
30/39 CRD-LV Performance Evaluation: Gamma
Cesium-137
Lab Res. 1 Res. 2
VR
VS 44.0 41.0
VT '',
vu
W 36.0 34.0
WD 33.0 34.0
WF 36.0 37.0
WI 35.0 40.0
WJ 35.0 38.0
WK 140.0 132.0
X 39.0 41.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
37.0 3.51 0.827
31.0 2.52 0.591
34.0 0.58 0.118
37.0 0.58 0.118
40.0 2.89 0.591
35.0 1.73 0.354
136,0 400 0.945
36.0 2.52 0.591
in Water, 9-Jun-1995
Normalized deviation
Average (grand-avg) (known)
; , , ',->/
40.67 1.79 1.96
' ' % ' "
'. "* '''
33.67 -0.63 -0.46
33.67 -0.63 -0.46
36.67 0.41 0.58
38.33 0.99 1.15
36.00 0.18 0.35
136.00 34.82 34.99
38.67 1.10 1.27
Tag
-» ,
'
X ,
Data sorted by Laboratory Average
Average Tag
17.33 x
23.67 x
27.00
27.00
27.33
28.67
29.00
29.00
30.33
30.67
31.00
31.00
31.00
31.33
31.67
31.67
31.67
32.00
32.00
32.00
32.33
32.33
32.33
32.67
32.67
32.67
33.00
33.00
33.00
33.00
33.33
= No data submitted
0 s Insufficient data
Lab Average Tag
FZ 33.33
AL 33.67
QU 33.67
OK 33.67
QW 33.67
NZ 33.67
TL 34.00
DO 34.00
BA 34.00
NK 34.00
VG 34.00
PQ 34.00
BI 34.00
UY 34.00
RF 34.00
BG 34.00
AI 34.33
RZ 34.33
PV 34.33
AY 34.33
VH 34.33
BW 34.33
A 34.33
SX 34.33
FU 34.33
EA 34.67
OB 34.67
NP 34.67
K 34.67
GE 34.67
KL 34.67
TAG SYMBOLS
Lab Average Tag
JG 34.67
WD 34.67
W 35.00
QT 35.00
CK 35.00
AH 35.00
PI 35.00
OA 35.00
NJ 35.00
M 35.00
JE 35.00
HJ 35.00
DL 35.00
DH 35.00
DE 35.33
BL 35.33
TH 35.33
TD 35.33
RR 35.33
RH 35.33
QZ 35.33
KX 35.33
I 35.33
EX 35.67
EW 35.67
OL 35.67
GL 35.67
EL 35.67
D 35.67
CP 35.67
BC 35.67
ft = Above control
x = Determined to be an outlier & = Below control
Lab
BB
AU
UW
UE
U
TQ
Q
PW
PB
OZ
LF
JI
BO
AJ
TS
SC
S
J
KX
GI
CC
BM
AF
VA
TR
SR
OM
FJ
DM
CS
CM
limit
limit
-------
.^ -.. -.
CRD-LV
Cesium-137
Average Tag
35.67
35.67
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.33
36.33
36.33
36.33
36.33
36.33
36.33
36.67
36.67
36.67
36.67
36.67
37.00
% responding labs
in. ___________
IU*
.
-6 -4
Performance Evaluation: Gamma in Water, 9-Jun-1995
Data sorted
Lab Average
AN 37.00
AK 37.00
WJ 37.00
VI 37.00
UP 37.00
T 37.33
SZ 37.33
RO 37.67
LR 37.67
FL 37.67
EB 37.67
DD 37.67
AP 37.67
TI 37.67
NO 38.00
NH 38.00
N 38.00
MP 38.00
JS 38.33
HK 38.33
WF 38.33
E 38.67
CA 38.67
BH 38.67
AW 38.67
VM 39.00
by Laboratory Average
Tag Lab
TC
sv
LT
HL
DT
UR
KH
VC
SI
R
PM
HP
CJ
AE
UN
TO
RU
CX
WI
SM
1C
X
vo
QX
EZ
SN
Average Tag
39.00
39.00
39.00
39.33
39.33
39.67
39.67
39.67
39.67
40.00
40.00
40.67
40.67
40.67
41.00
41.00
42.67
43.00
43.33
46.00 x
47.67 x
54.67 x
55.33 x
56.67 x
59.67 x
136.00 x
314.33 x
31 / 39 ]
Lab
SF
L
GQ
O
AZ
ss
QP
CO
CE
SD
MQ
vs
RV
DZ
P
CQ
BK
MV
m
DG
LE
TB
CG
C
ML
WK
JY
Frequency distribution
T -
-2
_.
Ifllll
.llllll-ll.l-l _. _ _
0 +2 +4
I
+6
Normalized deviation of the mean from the known value
= No data submitted
0 = Insufficient data
TAG SYMBOLS ft = Above
x s Determined to be an outlier U = Below
control limit
control limit
-*
-------
32/39 CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
Cesium-137
% responding laba Frequency distribution
10-
Tilllfl.llTlr
-4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Gamma in Water, 9-Jun-1995
33/39
Barium-133 Statistical Summary 191 Participants
The known value of this nuclide is 79.0 pCi/1 with an expected precision of 8.0; the control limits
are 65.1 to 92.9; the warning regions are 65.1 to 69.7 and 88.3 to 92.9
22(11.5 %) Failed to respond -,%-
5(2.6 %) Outliers '
6(3.1 %) Out of control '
but not an outlier
Statistic
; 145(75.9 %) Within all limits
Respondents
13(6.8 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
79.52
44.59
1988.16
56.07
0.66
0.01
75.67
-4.22
-0.07
Grand Avg 76.16
5.46
29.77
7.16
-3.59
-0.52
75.67
-4.22
-0.61
11(6.5 %) More than 3 norm. S.D.
13(7.7 %) Between 2 and 3 norm. S.D.
5(44.4 %) Within 1 norm. S.D.
of known value
7O(41.4 %) Between 1 and 2 norm. S.D.
-------
34 / 39 CRD-LV Performance
Evaluation: Gamma in Water, 9- Jon- 1995
)
Barium-133 |
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BG
BG
BH
BI
BK
BL
BM
"BN,
BO
BW
C
CA
CC
CE
CG
CJ
CK
CM
CO
CP
CQ
cs
ex
D
DD
DE
DG
DH
DL
=
0 s
^" -L
Res. 1
68.0
88.0
80.0
74.0
73.0
77.0
76.0
83.0
79.0
71.0
72.0
76.0
74.0
84.0
77.0
75.0
69.0
96.0
73.0
110.0
80.0
78.0
86.0
77.0
87.0
82.0
75.0
86.0
72.0
70.0
77.0
82.0
81.0
79.0
72.0
73.0
73.0
82.0
74.0
76.0
72.0
84.0
Res. 2
74.0
84.0
82.0
74.0
72.0
78.0
74.0
78.0
80.0
72.0
83.0
71.0
69.0
82.0
79.0
72.0
69.0
82.0
77.0
91.0
80.0
75.0
80.0
78.0
83.0
81.0
70.0
80.0
76.0
68.0
78.0
69.0
82.0
79.0
77.0
74.0
73.0
84.0
75.0
75.0
72.0
76.0
Res. 3
71.0
79.0
80.0
71.0
72.0
79.0
73.0
79.0
89.0
73.0
76.0
72.0
76.0
82.0
80.0
74.0
70.0
84.0
74.0
108.0
80.0
75.0
80.0
78.0
81.0
79.0
67.0
84.0
75.0
69.0
85.0
76.0
80.0
82.0
74.0
73.0
77.0
78.0
75.0
77.0
72.0
82.0
No data submitted
Insufficient
data
y
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
3.00
4.51
1.15
1.73
0.58
1.00
1.53
2.65
5.51
1.00
5.57
2.65
3.61
1.15
1.53
1.53
0.58
7.57
2.08
10.44
0.00
1.73
3.46
0.58
3.06
1.53
4.04
3.06
"
2.08
1.00
4.36
6.51
1.00
1.73
2.52
0.58
2.31
3.06
0.58
1.00
0.00
4.16
0.443
0.665
0.148
0.222
0.074
0.148
0.222
0.369
0.738
0.148
0.812
0.369
0.517
0.148
0.222
0.222
0.074
1.064
0.295
1.767
0.000
0.222
0.443
0.074
0.443
0.222
0.591
0.443
0.295
0.148
0.591
0.960
0.148
0.222
0.369
0.074
0.295
0.443
0.074
0.148
0.000
0.591
71.00
83.67
80.67
73.00
72.33
78.00
74.33
80.00
82.67
72.00
77.00
73.00
73.00
82.67
78.67
73.67
69.33
87.33
74.67
103.00
80.00
76.00
82.00
s
77-67
83.67
80.67
70.67
83.33
74.33
69.00
80.00
75.67
81.00
80.00
74.33
73.33
74.33
81.33
74.67
76.00
72.00
80.67
TAG SYMBOLS
Determined
to be an
outlier
-1.12
1.63
0.98
-0.68
-0.83
0.40
-0.40
0.83
1.41
-0.90
0.18
-0.68
-0.68
1.41
0.54
-0.54
-1.48
2.42
-0.32
5.81
0.83
-0.03
1.26
0.33
1.63
0.98
-1.19
1.55
i
-0.40
-1.55
0.83
-0.11
1.05
0.83
-0.40
-0.61
-0.40
1.12
-0.32
-0.03
-0.90
0.98
ft = Above
U s Below
-1.73
1.01
0.36
-1.30
-1.44
-0.22
-1.01
0.22
0.79
-1.52
-0.43
-1.30
-1.30
0.79
-0.07
-1.15
-2.09
1.80
-0.94
5.20 x
0.22
-0.65
0.65
-0.29
1.01
0.36
-1.80
0.94
\ , I*
-1.01
-2.17
0.22
-0.72
0.43
0.22
-1.01
-1.23
-1.01
0.51
-0.94
-0.65
-1.52
0.36
control limit
control limit
'
-------
CRD-LV Performance
Evaluation
Gamma in Water, 9-Jun-1995
35/39 1
Barium- 133
Lab
DM
DO
DT
DZ
E
EA
EB
EL
EN
EW
EX
EZ
F J
FK
FL
FU
FZ
GE
GI
GL
GQ
HI
HJ
HK
HL
HP
HX
I
1C
J
JE
JG
JI
JS
JY
K
KH
KL
KX
L
LE
LF
LR
LT
M
=
0 =
Res. 1
74.0
80.0
74.0
80.0
76.0
82.0
71.0
74.0
73.0
71.0
82.0
79.0
N
83.0
77.0
3LO
81.0
72.0
72.0
81.0
85.0
78.0
75.0
76.0
78.0
71.0
87.0
75.0
83.0
73.0
63.0
73.0
76.0
664;0
66.0
72.0
75.0
79.0
84.0
92.0
82.0
74.0
86.0
70.0
Res. 2
82.0
87.0
76.0
87.0
74.0
79.0
72.0
86.0
72.0
73.0
79.0
75.0
-
76.0
75.0
30,0
84.0
77.0
76.0
85.0
85.0
73.0
74.0
76.0
79.0
74.0
76.0
79.0
80.0
74.0
69.0
70.0
75.0
^614^6° ':/
64.0
71.0
.74.0
78.0
83.0
82.0
78.0
72.0
80.0
68.0
Res. 3
74.0
76.0
79.0
85.0
75.0
78.0
72.0
76.0
74.0
71.0
76.0
77.0
83.0
73.0
31.0
82.0
74.0
75.0
85.0
84.0
71.0
73.0
76.0
84.0
74.0
88.0
79.0
81.0
76.0
64.0
76.0
76.0
.. - . .:. .:: v
64.0
74.0
75.0
74.0
86.0
91.0
79.0
75.0
86.0
71.0
No data submitted
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
4.62
5.57
2.52
3.61
1.00
2.08
0.58
6.43
1.00
1.15
3.00
2.00
4.04
2.00
0.58
1.53
2.52
2.08
2.31
0.58
3.61
1.00
0.00
3.21
1.73
6.66
2.31
1.53
1.53
3.21
3.00
0.58
2178
1.15
1.53
0.58
2.65
1.53
5.51
2.08
1.53
3.46
1.53
0.591
0.812
0.369
0.517
0.148
0.295
0.074
0.886
0.148
0.148
0.443
0.295
0.517
0.295
0.074
0.222
0.369
0.295
0.295
0.074
0.517
0.148
0.000
0.443
0.222
0.886
0.295
0.222
0.222
0.443
0.443
0.074
6.127
0.148
0.222
0.074
0.369
0.222
0.738
0.295
0.222
0.443
0.222
76.67
81.00
76.33
84.00
75.00
79.67
71.67
78.67
-
73.00
71.67
79.00
77.00
s
80.67
75.00
30.67
82.33
74.33
74.33
83.67
84.67
74.00
74.00
76.00
80.33
73.00
83.67
77.67
81.33
74.33
65.33
73.00
75.67
' ' 646M
64.67
72.33
74.67
77.00
84.33
88.33
79.67
73.67
84.00
69.67
TAG SYMBOLS
Determined
to be an
outlier
0.11
1.05
0.04
1.70
-0.25
0.76
-0.97
0.54
-0.68
-0.97
0.61
0.18
0.98
-0.25
-9.85 ^
1.34
-0.40
-0.40
1.63
1.84
-0.47
-0.47
-0.03
0.90
-0.68
1.63
0.33
1.12
-0.40
-2.34
-0.68
-0.11
123.37 1
-2.49
-0.83
-0.32
0.18
1.77
2.64
0.76
-0.54
1.70
-1.41
ft s Above
-0.51
0.43
-0.58
1.08
-0.87
0.14
-1.59
-0.07
*
-1.30
-1.59
0.00
-0.43
\ > "
0.36
-0.87
WM'::^x'!':
0.72
-1.01
-1.01
1.01 -
1.23
-1.08
-1.08
-0.65
0.29
-1.30
1.01
-0.29
0.51
-1.01
-2.96
-1.30
-0.72
nn rjc i,
Zifi.l\J X
-3.10 JI
-1.44
-0.94
-0.43
1.15
2.02
0.14
-1.15
1.08
-2.02
control limit
II 3 Below control limit
-------
36 / 39 CRD-LV Performance
Barium-133
Lab Res. 1
MA
ML
MP
MQ
MV
MY
N
NH
NJ
NK
NO
NP
NZ
O
OA
OB
OK
OL
OM
OZ
P
PB
PE
PI
PM
PQ
PU
PV
PW
Q
QP
QT
QU
QW
QX
QZ
R
RF
RH
RL
RO
RR
RU
RV
=
(2^ s
85.0
79.0
75.0
88.0
77.0
74.0
64.0
63.0
73.0
70.0
59.0
81.0
79.0
82.0
70.0
72.0
43.0
77.0
65.0
70.0
73.0
62.0
63.0
73.0
70.0
80.0
75.0
85.0
87.0
76.0
74.0
75.0
71.0
70.0
74.0
67.0
84.0
83.0
Res. 2
82.0
77.0
67.0
88.0
82.0
72.0
76.0
68.0
79.0
70.0
66.0
81.0
74.0
,
80.0
82.0
74.0
> 43.0
80.0
66.0
%
70.0
70.0
66.0
76.0
74.0
69.0
77.0
74.0
86.0
85.0
78.0
70.0
73.0
74.0
74.0
70.0
74.0
78.0
87.0
Res. 3
85.0
78.0
74.0
89.0
80.0
76.0
74.0
71.0
83.0
70.0
63.0
81.0
77.0
85.0
66.0
76.0
44.0
81.0
65.0
71.0
72.0
65.0
67.0
70.0
74.0
78.0
73.0
84.0
87.0
76.0
74.0
75.0
71.0
74.0
71.0
68.0
75.0
78.0
No data submitted
Insufficient
data
x =
Evaluation
Gamma in Water, 9-Jun-1995
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
1.73
1.00
4.36
0.58
2.52
2.00
6.43
4.04
5.03
0.00
3.51
0.00
2.52
2.52
8.33
2.00
0.58
2.08
0.58
0.58
1.53
2.08
6.66
2.08
2.65
1.53
1.00
1.00
1.15
1.15
2.31
1.15
1.73
2.31
2.08
3.79
4.58
4.51
0.222
0.148
0.591
0.074
0.369
0.295
0.886
0.591
0.738
0.000
0.517
0.000
0.369
0.369
1.345
0.295
0.074
0.295
0.074
0.074
0.222
0.295
0.960
0.295
0.369
0.222
0.148
0.148
0.148
0.148
0.295
0.148
0.222
0.295
0.295
0.517
0.665
0.665
84.00
78.00
72.00
88.33
79.67
74.00
71.33
67.33
78.33
70.00
62.67
81.00
76.67
82.33
72.67
74.00
43.33
79.33
65.33
70.33
71.67
64.33
68.67
72.33
71.00
78.33
74.00
85.00
86.33
76.67
72.67
74.33
72.00
72.67
71.67
69.67
79.00
82.67
TAG SYMBOLS
Determined
to be an
outlier
1.70
0.40
-0.90
2.64
0.76
-0.47
-1.05
-1.91
0.47
-1.33
-2.92
1.05
0.11
1.34
-0.76
-0.47
-7,11
0.69
-2.34
-1.26
-0.97
-2.56
-1.62
-0.83
-1.12
0.47
-0.47
1.91
2.20
0.11
-0.76
-0.40
-0.90
-0.76
-0.97
-1.41
0.61
1.41
ft = Above
11 = Below
,5 ; », -
1.08
-0.22
-1.52
2.02
*
0.14
-1.08
-1.66
-2.53
-0.14
-1.95
-3.54 U
0.43
-0.51
; ' ,,
0.72
-1.37
-1.08
-7.72 x
0.07
-2.96
-1.88
-1.59
-3.18 U
*
-2.24
-1.44
-1.73
-0.14
-1.08
1.30
1.59
-0.51
-1.37
-1.01
-1.52
-1.37
*
-1.59
-2.02
0.00
0.79
control limit
control limit
-------
CRD-LV Performance
Barium-133
Lab Res. 1
RX
RZ
S
sc
SD
SF
SI
SM
SN
SR
ss
ST
sv
sx
sz
T
TB
TC
TD
TE
TH
TI
TL
TO
TQ
TR
TS
U
UE
UM
UN
UP
UR
UT
UW
ux
UY
VA
VC
VE
VG
VH
VI
VM
VO
=
0 =
, -<
69.0
76.0
73.0
72.0
76.0
79.0
79.0
76.0
74.0
83.0
80.0
82.0
77.0
75.0
* 126;0
80.0
72.0
74.0
86.0
68.0
67.0
77.0
76.0
59.0
76.0
78.0
62.0
82.0
88.0
75.0
73.0
85.0
74.0
72.0
73.0
73.0
81.0
79.0
Res. 2
\"
70.0
79.0
72.0
74.0
79.0
76.0
83.0
72.0
78.0
78.0
79.0
81.0
73.0
78.0
126.0
79.0
77.0
,.
75.0
81.0
74.0
67.0
70.0
73.0
62.0
75.0
78.0
73.0
82.0
82.0
77.0
79.0
83.0
75.0
71.0
72.0
75.0
81.0
82.0
Res. 3
70.0
77.0
72.0
76.0
V
85.0
77.0
80.0
75.0
75.0
81.0
79.0
82.0
76.0
83.0
126.0
82.0
70.0
71.0
84.0
78.0
66.0
75.0
72.0
67.0
76.0
75.0
62.0
81.0
87.0
75.0
73.0
84.0
77.0
70.0
73.0
72.0
76.0
80.0
No data submitted
Insufficient
data
X 3
Evaluation
Exper.
Sigma
0.58
1.53
0.58
2.00
4.58
1.53
2.08
2.08
2.08
2.52
0.58
0.58
2.08
4.04
0.00
1.53
3.61
2.08
2.52
5.03
0.58
3.61
2.08
4.04
0.58
1.73
6.35
0.58
3.21
1.15
3.46
1.00
1.53
1.00
0.58
1.53
2.89
1.53
: Gamma in Water, 9-Jun-1995
37/39
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
.
0.074
0.222
0.074
0.295
0.665
0.222
0.295
0.295
0.295
0.369
0.074
0.074
0.295
0.591
0.000
0.222
0.517
0.295
0.369
0.738
0.074
0.517
0.295
0.591
0.074
0.222
0.812
0.074
0.443
0.148
0.443
0.148
0.222
0.148
0.074
0.222
0.369
0.222
69.67
77.33
72.33
74.00
80.00
77.33
80.67
74.33
75.67
80.67
79.33
81.67
75.33
78.67
126.00 ;
80.33
73.00
s
73.33
83.67
73.33
66.67
74.00
73.67
62.67
75.67
77.00
65.67
81.67
85.67
75.67
75.00
84.00
75.33
71.00
72.67
73.33
79.33
80.33
TAG SYMBOLS
Determined
to be an
outlier
s
-1.41
0.25
-0.83
-0.47
0.83
0.25
0.98
-0.40
-0.11
0.98
--
0.69
1.19
-0.18
0.54
\10.79
0.90
-0.68
v
-0.61
1.63
-0.61
-2.06
-0.47
-0.54
-2.92
-0.11
0.18
-2.27
1.19
2.06
-0.11
-0.25
1.70
-0.18
-1.12
-0.76
-0.61
0.69
0.90
IT = Above
U- = Below
..--V.. .- .
-2.02
-0.36
-1.44
-1.08
0.22
-0.36
0.36
-1.01
-0.72
0.36
'.:xi';'-'-:?':!-'.»'"'.
0.07
0.58
-0.79
-0.07
10;18 X
0.29
-1.30
' '
-1.23
1.01
-1.23
-2.67
-1.08
-1.15
-3.54 U
-0.72
-0.43
; «
-2.89
0.58
1.44
-0.72
«
-0.87
1.08
-0.79
:
-1.73
-1.37
-1.23
0.07
0.29
control limit
control limit
, ^
-------
/^ ..- ..- i .... - , . ,u .. ,._ , .__. -.. r .; ' -^...^".".^r^rr -..-^r -^~' ~
38/39 CRD-LV Performance Evaluation: Gamma
Barium-133
Lab Res. 1 Res. 2
VR
VS 83.0 83.0
VT
vu -- ...... ....... .... .... ..
W 75.0 78.0
WD 73.0 74.0
WF 63.0 57.0
WI 64.0 63.0
WJ 87.0 85.0
WK 73.0 80.0
X 80.0 78.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
79.0 2.31 0.295
79.0 1 2.08 0.295
71.0 1.53 0.222
59.0 3.06 0.443
65.0 1.00 0.148
82.0 2.52 0.369
77.0 3.51 0.517
83.0 2.52 0.369
in Water, 9-Jun-1995
Normalized deviation
Average (grand-avg) (known)
81.67 1.19 0.58
': ' '
77.33 0.25 -0.36
72.67 -0.76 -1.37
59.67 -3.57 -4.19
64.00 -2.63 -3.25
84.67 1.84 1.23
76.67 0.11 -0.51
80.33 0.90 0.29
Jv
Tag
*.'
,
u
li
Data sorted by Laboratory Average
Average Tag
30.67 x
43.33 x
59.67 U
62.67 Ji
62.67 U
64.00 U
64.33 U
64.67 H
65.33
65.33
65.67
66.67
67.33
68.67
69.00
69.33
69.67
69.67
69.67
70.00
70.33
70.67
71.00
71.00
71.00
71.33
71.67
71.67
71.67
71.67
72.00
= No data submitted
0 == Insufficient data
Lab Average Tag
FZ 72.00
OZ 72.00
WF 72.00
TS 72.33
NZ 72.33
WI 72.33
PQ 72.33
K 72.67
PB 72.67
JG 72.67
UN 72.67
TO 72.67
NK 73.00
PV 73.00
CK 73.00
BC 73.00
RZ 73.00
RR 73.00
M 73.00
NP 73.33
PI 73.33
CC 73.33
VG 73.33
Q 73.67
A 73.67
NJ 73.67
RO 74.00
PM 74.00
EX 74.00
EB 74.00
RF 74.00
TAG SYMBOLS
Lab Average Tag
MQ 74.00
DH 74.00
AP 74.33
SC 74.33
PW 74.33
KH 74.33
AI 74.33
WD 74.33
VH 74.33
RH 74.33
QZ 74.33
OL 74.67
TD 74.67
JI 74.67
HX 75.00
EW 75.00
AY 75.00
AW 75.33
AH 75.33
VI 75.67
TL 75.67
TH 75.67
CX 75.67
TR 75.67
LR 76.00
BB 76.00
TQ 76.00
SD 76.33
QT 76.67
OM 76.67
NH 76.67
ft = Above control
x s Determined to be an outlier li = Below control
Lab
HK
HJ
SN
R
JE
GL
GI
D
CS
CJ
AK
KL
DE
BH
UY
FU
E
VC
SZ
UW
U
SR
JS
CO
HL
DG
BL
DT
WK
QX
OA
limit
limit
y
-------
CRD-LV
Barium-133
Average Tag
76.67
77.00
77.00
77.00
77.00
77.33
77.33
77.33
77.67
77.67
78.00
78.00
78.33
78.33
78.67
78.67
78.67
79.00
79.00
79.33
79.33
79.33
79.67
79.67
79.67
% responding labs
0
-6 -4
% responding labs
-6 -4
s No data submitted
0 s Insufficient data
Performance Evaluation: Gamma in Water, 9-Jun-1995
Data sorted by Laboratory Average
Lab
DM
UE
KX
FJ
AU
W
SI
S
1C
BO
MP
AJ
QP
NO
T
EL
BA
RU
EZ
VM
sv
p
N
LF
EA
Average Tag Lab
80.00 SF
80.00 CQ
80.00 CM
80.00 BK
80.00 AL
80.33 X
80.33 VO
80.33 TC
80.33 HP
80.67 SS
80.67 SM
80.67 FL
80.67 DL
80.67 CA
80.67 AF
81.00 O
81.00 DO
81.00 CP
81.33 J
81.33 DD
81.67 VS
81.67 UP
81.67 SX
82.00 BM
82.33 OK
Average Tag
82.33
82.67
82.67
82.67
83.33
83.67
83.67
83.67
83.67
83.67
84.00
84.00
84.00
84.00
84.33
84.67
84.67
85.00
85.67
86.33
87.33
88.33
88.33
103.00 x
126.00 x
646.00 x
Frequency distribution
_ _ _ _ ____ __________
-_! _j
. .T _ -.lllllliillliiL .
-2 0 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
______ _. _________-__-____-_..--
__|l_ |B .
1 T .._. -llllt.lillliiLT .
Normalized deviation of the mean from the grand average
TAG SYMBOLS 11 s Above
x = Determined to be an outlier D-. = Below
39/39
Lab
GE
RV
AZ
AN
CE
TI
I
GQ
C
AE
VA
ML
LT
DZ
L
WJ
HI
QU
UR
QW
BG
MV
LE
BI
TB
JY
AW
+6
sss*
1 1
+6
control limit
control limit
------- |