United States
Environmental Protection
Agency
Environmental Monitoring
Systems Laboratory
P O. Box 93478
Las Vegas NV 89193-3478
EPA/600/R-92/237
December 1992
Research and Development
Gamma in Water
Intercomparison Study
A Statistical Evaluation of
the October 9,1992 Data
5614GRKNRD.COV-6
-------
Gamma in Water
Intercomparison Study
October 9, 1992
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Intercomparison Study for Gamma In Water; October 9, 1992.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify
us immediately.
We encourage you to make use of the computer-automated data-entry system that
has been in place for some time now. As the number of participants increases, and
it becomes unrealistic for us to receive results by mail or FAX, the computer system
will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Frank Novielli at 702/798-2159 or Patricia Honsa at 702/798-2141.
Sincerely,
Frank Novielli
Senior Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and it has been approved for publication
as an EPA document.
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992 1/43
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.
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
2/43
Cobalt-60 Statistical Summary 174 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 5.0; the control limits
are 1.3 to 18.7; the warning regions are 1.3 to 4.2 and 15.8 to 18.7
27(15.5 %) Failed to respond -,,^
5(2.9 %) Outliers '
Statistic
136(78.2 %) Within all limits
Respondents
* 6(3.4 %) 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
11.70
6.58
43.25
56.23
16.96
0.26
10.67
6.67
0.10
Grand Avg 10.96
2.10
4.43
19.20
9.58
0.46
10.33
3.33
0.16
6(4.1 %) More than 3 norm. S.D. ..^
5(3.4 %) Between 2 and 3 norm. S.D.!
; 119(81.0 %) Within 1 norm. S.D.
of known value
»17(11.6 %) Between 1 and 2 norm. S.D.
-------
3/43 EMSL-LV Intercomparison Study: Gamma
in Water,
9-Oct-1992
Cobalt-60
Lab
A
AE
AF
AI
AJ
AK
AL
AN
AP
AC
AW
AY
AZ
BA
BB
BC
BO
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CC
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DJ
DL
DM
DO
Res. 1
10.0
10.0
10.0
10.0
11.0
10.0
17.0
9.0
11.0
36.0
13.0
11.0
7.0
12.0
10.0
9.0
"'
8.0
10.0
10.0
10.0
10.0
5.0
9.0
16.0
9.0
12.0
6.0
14.0
11.0
10.0
13.0
11.0
10.0
14.0
12.0
10.0
10.0
10.0
12.0
9.0
10.0
10.0
11.0
Res. 2
9.0
9.0
8.0
11.0
11.0
9.0
14.0
10.0
11.0
40,0
12.0
11.0
8.0
11.0
10.0
10.0
9.0
12.0
10.0
10.0
10.0
5.0
10.0
13.0
10.0
10.0
5.0
10.0
12.0
11.0
17.0
11.0
11.0
12.0
12.0
10.0
9.0
10.0
12.0
9.0
10.0
10.0
11.0
Res. 3
10.0
10.0
10.0
11.0
10.0
10.0
13.0
10.0
11.0
40.6
13.0
10.0
8.0
11.0
10.0
10.0
'
8.0
11.0
10.0
9.0
10.0
6.0
10.0
17.0
9.0
12.0
5.0
11.0
10.0
12.0
10.0
11.0
13.0
12.0
12.0
10.0
9.0
10.0
11.0
9.0
8.0
11.0
10.0
s No data submitted
0 3
Insufficient
data
x =
Exper.
Sigma
0.58
0.58
1.15
0.58
0.58
0.58
2.08
0.58
0.00
2.31
0.58
0.58
0.58
0.58
0.00
0.58
0.58
1.00
0.00
0.58
0.00
0.58
0.58
2.08
0.58
1.15
0.58
2.08
1.00
1.00
3.51
0.00
1.53
1.15
0.00
0.00
0.58
0.00
0.58
0.00
1.15
0.58
0.58
Rng anal
(R + SR)
0.118
0.118
0.236
0.118
0.118
0.118
0.473
0.118
0.000
o.4?a
0.118
0.118
0.118
0.118
0.000
0.118
0.118
0.236
0.000
0.118
0.000
0.118
0.118
0.473
0.118
0.236
0.118
0.473
0.236
0.236
0.827
0.000
0.354
0.236
0.000
0.000
0.118
0.000
0.118
0.000
0.236
0.118
0.118
Normalized deviation
Average
9.67
9.67
9.33
10.67
10.67
9.67
14.67
9.67
11.00
3fc6?
12.67
10.67
7.67
11.33
10.00
9.67
8.33
11.00
10.00
9.67
10.00
5.33
9.67
15.33
9.33
11.33
5.33
11.67
11.00
11.00
13.33
11.00
11.33
12.67
12.00
10.00
9.33
10.00
11.67
9.00
9.33
10.33
10.67
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
-0.45
-0.45
-0.56
-0.10
-0.10
-0.45
1.28
-0.45
0.01
9.60
0.59
-0.10
-1.14
0.13
-0.33
-0.45
-0.91
0.01
-0.33
-0.45
-0.33
-1.95
-0.45
1.52
-0.56
0.13
-1.95
0.25
0.01
0.01
0.82
0.01
0.13
0.59
0.36
-0.33
-0.56
-0.33
0.25
-0.68
-0.56
-0.22
-0.10
ft s Above
U & Below
-0.12
-0.12
-0.23
0.23
0.23
-0.12
1.62
-0.12
0.35
dja x
0.92
0.23
-0.81
0.46
0.00
-0.12
»
-0.58
0.35
0.00
-0.12
0.00
-1.62
-0.12
1.85
-0.23
0.46
-1.62
0.58
0.35
0.35
1.15
0.35
0.46
0.92
0.69
0.00
-0.23
0.00
0.58
-0.35
-0.23
0.12
0.23
control limit
control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, 9-Oct-1992
4/43
Cobalt-60
Lab
DR
DT
DZ
E
EA
EB
EH
EL
EN
EW
EX
H5B
FE
FJ
FL
FU
FZ
GE
GI
GL
HI
HJ
HK
HL
HP
HU
I
1C
IU
J
JR
JS
JY
K
KF
KH
KL
KM
KX
L
LA
LF
LM
LT
Res. 1
10.0
9.0
11.0
10.0
10.0
9.0
11.0
10.0
16.0
.
9.0
1.0
15.0
10.0
10.0
9.0
12.0
8.0
9.0
10.0
9.0
10.0
11.0
12.0
12.0
9.0
11.0
8.0
11.0
10.0
10.0
13.0
11.0
11.0
,
9.0
10.0
9.0
13.0
12.0
9.0
10.0
Res. 2
9.0
10.0
11.0
10.0
10.0
9.0
13.0
9.0
15.0
''
12.0
10
9.0
10.0
12.0
10.0
10.0
10.0
9.0
10.0
14.0
9.0
11.0
12.0
11.0
10.0
10.0
f * . f jf f ff.f, j
11.0
10.0
10.0
11.0
12.0
10.0
11.0
'
9.0
11.0
10.0
13.0
12.0
10.0
10.0
Res. 3
12.0
11.0
10.0
10.0
9.0
9.0
10.0
7.0
13.0
_,
9.0
1,0
15.0
11.0
10.0
12.0
10.0
10.0
9.0
12.0
13.0
16.0
10.0
10.0
12.0
10.0
10.0
10.0
11.0
10.0
10.0
12.0
12.0
11.0
9.0
11.0
11.0
13.0
11.0
9.0
10.0
= No data submitted
0 a
Insufficient
data
X S
Exper.
Sigma
1.53
1.00
0.58
0.00
0.58
0.00
1.53
1.53
1.53
1.73
0.00
3.46'
0.58
1.15
1.53
1.15
1.15
0.00
1.15
2.65
3.79
0.58
1.15
0.58
0.58
0.58
1.53
0.58
0.00
0.58
0.58
1.00
0.00
0.00
0.58
1.00
0.00
0.58
0.58
0.00
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.354
0.236
0.118
0.000
0.118
0.000
0.354
0.354
0.354
0.354
0.000
0.709
0.118
0.236
0.354
0.236
0.236
0.000
0.236
0.591
0.827
0.118
0.236
0.118
0.118
0.118
0.354
0.118
0.000
0.118
0.118
0.236
0.000
0.000
0.118
0.236
0.000
0.118
0.118
0.000
10.33
10.00
10.67
10.00
9.67
9.00
11.33
8.67
14.67
10.00
1*00
13.00
10.33
10.67
10.33
10.67
9.33
9.00
10.67
12.00
11.67
10.67
11.33
11.67
9.67
10.33
9.67
10.67
10.00
10.33
12.33
11.00
11.00
9.00
10.67
10.00
13.00
11.67
9.33
10.00
TAG SYMBOLS
Determined
to be an
outlier
-0.22
-0.33
-0.10
-0.33
-0.45
-0.68
0.13
-0.79
1.28
-0.33
-3.45
0.71
-0.22
-0.10
-0.22
-0.10
-0.56
-0.68
-0.10
0.36
0.25
-0.10
0.13
0.25
-0.45
-0.22
-0.45
-0.10
-0.33
-0.22
0.48
0.01
0.01
-0.68
-0.10
-0.33
0.71
0.25
-0.56
-0.33
ft = Above
JJ. = Below
0.12
0.00
0.23
0.00
-0.12
-0.35
0.46
-0.46
1.62
*
0.00
-3.12 x
1.04
0.12
0.23
0.12
0.23
-0.23
-0.35
0.23
0.69
0.58
0.23
0.46
0.58
-0.12
0.12
-0.12
0.23
0.00
0.12
0.81
0.35
0.35
... ..;.. .^ ;
-0.35
0.23
0.00
1.04
0.58
-0.23
0.00
control limit
control limit
-------
|! 5/43 EMSL-LV Intel-comparison Study : Gamma in Water, 9-Oct-1992
Cobalt-60
Lab
M
MA
ME
ML
MN
MP
MQ
MS
MT
MV
MY
1ST
NI
NJ
NK
NP
NZ
O
OA
OB
Ofc
OM
OO
OT
PB
PC
PE
PP
PQ
PT
PU
PV
PW
PX
PY
Q
QB
QJ
QL
QP
QQ
QT
QX
QZ
Res. 1
9.0
10.0
10.0
12.0
18.0
11.0
10.0
20.0
10.0
12.0
10.0
12.0
10.0
22.0
11.0
10.0
10.0
19.0
11.0
9.0
9.0
13.0
9.0
16.0
14.0
11.0
10.0
10.0
12.0
12.0
9.0
10.0
10.0
18.0
10.0
Res. 2
9.0
10.0
10.0
'
11.0
15.0
11.0
8.0
1&&
10.0
23.0
10.0
9.0
11.0
26.0
10.0
10.0
10.0
'
17.0
10.0
10.0
'
10.0
12.0
9.0
17.0
14.0
9.0
10.0
10.0
11.0
12.0
9.0
11.0
11.0
18.0
10.0
Res. 3
9.0
10.0
11.0
11.0
15.0
11.0
9.0
20.0
10.0
11.0
10.0
11.0
9.0
26.0
10.0
10.0
10.0
-
'
16.0
12.0
10.0
'
10.0
15.0
10.0
16.0
17.0
12.0
10.0
10.0
13.0
12.0
8.0
9.0
10.0
17.0
10.0
s No data submitted
0 m
Insufficient
data
X s
Exper.
Sigma
0.00
0.00
0.58
s
0.58
1.73
0.00
1.00
(X5S
0.00
6.66
0.00
1.53
1.00
&00
0.58
0.00
0.00
"
1.53
1.00
0.58
'
0.58
1.53
0.58
0.58
1.73
1.53
0.00
0.00
1.00
0.00
0.58
1.00
0.58
0.58
0.00
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.000
0.000
0.118
0.118
0.354
0.000
0.236
0118
0.000
1.795
0.000
0.354
0.236
0,70$
0.118
0.000
0.000
0.354
0.236
0.118
0.118
0.354
0.118
0.118
0.354
0.354
0.000
0.000
0.236
0.000
0.118
0.236
0.118
0.118
0.000
9.00
10.00
10.33
11.33
16.00
11.00
9.00
19.67
10.00
15.33
10.00
10.67
10.00
25.00
10.33
10.00
10.00
17.33
11.00
9.67
'
9.67
13.33
9.33
16.33
15.00
10.67
10.00
10.00
12.00
12.00
8.67
10.00
10.33
17.67
10.00
TAG SYMBOLS
Determined
to be an
outlier
-0.68
-0.33
-0.22
0.13
1.75
0.01
-0.68
3.02
-0.33
1.52
-0.33
-0.10
-0.33
486
-0.22
-0.33
-0.33
2.21
0.01
-0.45
-0.45
0.82
-0.56
1.86
1.40
-0.10
-0.33
-0.33
0.36
0.36
-0.79
-0.33
-0.22
2.32
-0.33
ft Above
U s Below
-0.35
0.00
0.12
»
«
0.46
2.08
0.35
-0.35
3.36 x
0.00
»
1.85
0.00
0.23
0.00
5J20 x
0.12
0.00
0.00
*
*
' »
2.54
0.35
-0.12
*
-0.12
1.15
-0.23
2.19
1.73
0.23
0.00
»
0.00
0.69
0.69
-0.46
0.00
0.12
2.66
0.00
control limit
control limit
-------
EMSL-LV Intel-comparison Study: Gamma
in Water,
9-Oct-1992
6/43
Cobalt-60
Lab
R
RA
RC
RK
RO
RQ
BB
BU
RV
RZ
8
SA
SC
SD
SI
SK
ss
ST
sz
T
TA
TB
TD
TE
TF
TG
TI
TK
TL
TO
TR
TU
U
W
X
Y
Z
Res. 1
11.0
11.0
13.0
76.0
11.0
11.0
-
13.0
10.0
10.0
15.0
16.0
10.0
11.0
12.0
7.0
9.0
13.0
12.0
16.0
12.0
'
12.0
20.0
19.0
10.0
9.0
9.0
13.0
9.0
10.0
Res. 2
10.0
12.0
11.0
$3.0
10.0
11.0
f
10.0
11.0
Xt
f
10.0
16.0
17.0
9.0
11.0
12.0
9.0
11.0
9.0
' f
15.0
. - .
14.0
12.0
* "" ff
9.0
19.0
17.0
10.0
11.0
10.0
14.0
9.0
10.0
Res. 3
10.0
11.0
13.0
7
fM)
11.0
11.0
'
'
8.0
10.0
'
f
*
12.0
12.0
10.0
9.0
12.0
11.0
9.0
12.0
12.0
f
14.0
_.
14.0
15.0
f S
';, '*,
10.0
17.0
19.0
10.0
11.0
8.0
13.0
10.0
10.0
Data
Average
=
1.00
5.33
5.33
Tag
X
Lab
EZ
CC
BN
Exper.
Sigma
0.58
0.58
1.15
4.00
0.58
0.00
'
2.52
0.58
1.15
2.08
3.79
0.58
0.58
0.58
1.15
1.53
2.08
1.53
1.15
1.73
1.53
1.53
1.15
0.00
1.15
1.00
0.58
0.58
0.00
Rng anal
(R + SR)
0.118
0.118
0.236
Average
10.33
11.33
12.33
0.940 79.00
0.118
0.000
0.591
0.118
'
0.236
0.473
0.827
0.118
0.118
0.118
0.236
0.354
0.473
0.354
0.236
0.354
'
0.354
0.354
0.236
0.000
0.236
0.236
0.118
0.118
0.000
10.67
11.00
10.33
10.33
10.67
14.33
14.33
9.33
11.33
11.67
8.33
10.67
11.33
13.67
14.67
13.00
10.33
18.67
18.33
10.00
10.33
9.00
13.33
9.33
10.00
Normalized
(grand-avg)
-0.22
0.13
0.48
23.57
-0.10
0.01
-0.22
-0.22
-0.10
1.17
1.17
-0.56
0.13
0.25
-0.91
-0.10
0.13
0.94
1.28
0.71
-0.22
2.67
2.55
-0.33
-0.22
-0.68
0.82
-0.56
-0.33
deviation
(known) Tag
0.12
0.46
0.81
23.90 x
0.23
0.35
*
0.12
0.12
0.23
1.50
1.50
*
-0.23
0.46
0.58 -
-0.58
0.23
0.46
1.27
*
1.62
1.04
*
0.12
3.00
2.89
0.00
0.12
-0.35
1.15
-0.23
0.00
sorted by Laboratory Average
Average
No data submitted
0 3 Insufficient data
X
7.67
8.33
8.33
Tag
Lab
AZ
T
BH
Average Tag Lab
TAG SYMBOLS
3 Determined to be an outlier
8.67
8.67
9.00
QL
EL
W
It = Above control limit
Jl = Below control limit
-------
7/43
Cobalt-60
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
Data sorted by Laboratory Average
Average
9.00
9.00
9.00
9.00
9.00
9.00
9.33
9.33
9.33
9.33
9.33
9.33
9.33
9.33
9.33
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
s No data
Tag Lab
MT
M
KH
GI
EB
DH
Y
SS
PT
LF
GE
DL
DD
C
AF
PP
PC
1C
HU
EA
BO
BL
BC
AN
AK
AE
A
Z
TU
QZ
QP
Q
PX
OB
OA
NP
NJ
MY
MA
LT
KM
J
EX
E
Average Tag
10.00
10.00
10.00
10.00
10.00
10.00
10.33
10.33
10.33
10.33
10.33
10.33
10.33
10.33
10.33
10.33
10.33
10.33
10.33
10.33
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
10.67
11.00
11.00
11.00
11.00
11.00
11.00
11.00
11.00
submitted TAG SYMBOLS
0 s Insufficient data x = Determined to be an
Lab
DT
DE
D
BM
BK
BB
U
TL
RZ
RV
R
QT
O
ME
JR
I
FU
FJ
DR
DM
TA
SC
RO
PW
NK
KL
IU
HK
GL
FZ
FL
DZ
DO
AY
AJ
AI
RQ
PB
MS
K
JY
CP
CK
CJ
Average Tag
11.00
11.00
11.33
11.33
11.33
11.33
11.33
11.33
11.33
11.33
11.33
11.67
11.67
11.67
11.67
11.67
11.67
12.00
12.00
12.00
12.00
12.33
12.33
12.67
12.67
13.00
13.00
13.00
13.33
13.33
13.33
13.67
14.33
14.33
14.67
14.67
14.67
15.00
15.33
15.33
16.00
16.33
17.33
17.67
ft s Above control
outlier $ = Below control
Lab
BI
AP
TB
ST
RA
MP
HL
EH
CQ
CA
BA
SZ
L
HP
HJ
DG
CE
QJ
QB
HI
CX
RC
JS
CS
AW
TI
KX
FE
X
PQ
CO
TE
SI
SD
TG
EN
AL
PV
NI
BW
MQ
PU
OT
QX
limit
limit
-------
Cobalt-60
Average
EMSL-LV Intel-comparison Study : Gamma in Water, 9-Oct-1992
8/43
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab Average
Tag
Lab
18.33
18.67
TR
TO
19.67
25.00
x
x
MV
NZ
38.67
79.00
x
x
AU
RK
Frequency distribution of responding labs( expected prec. vs known value)
20-
10
Ltai:
-*
'4 exp.prec. -2 known *2 exP- Prec- +4
value
Frequency distribution of responding labs(std. dev. vs mean value)
+6
--₯
-4 stddev. -2
mean
value
+2 std-dev-
s No data submitted
0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
It = Above control limit
& = Below control limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
9/43
Zinc-65 Statistical Summary 174 Participants
The known value of this nuclide is 148.0 pCi/I with an expected precision of 15.0; the control limits
are 122.0 to 174.0; the warning regions are 122.0 to 130.6 and 165.4 to 174.0
27(15.5 %) Failed to respond -..
7(4.O %) Outliers *'
4(2.3 %) Out of control '
but not an outlier
Statistic
. 112(64.4 %) Within all limits
Respondents
24(13.8 %) 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
162.22 Grand Avg 157.10
91.31 9.35
8337.44 87.41
56.29 5.95
9.61 6.15
0.16 0.97
156.00 156.00
5.41 5.41
0.09 0.86
11 (7.5 %) More than 3 norm. S.D. «.
24(16.3 %) Between 2 and 3 norm. S.D.
,69(46.9 %) Within 1 norm. S.D.
of known value
43(29.3 %) Between 1 and 2 norm. S.D.
-------
10/43 EMSL-LV Intel-comparison Study: Gamma
in Water,
9-Oct-1992
Zinc-65
Exper. Rng anal
Lab
A
AE
AF
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
UJ
DL
DM
DO
Res. 1
154.0
158.0
149.0
160.0
191.0
149.0
163.0
160.0
145.0
150.0
146.0
146.0
159.0
161.0
155.0
160.0
154.0
132.0
158.0
153.0
149.0
82.0
160.0
280.0
162.0
184.0
flfc
153.0
157.0
160.0
165.0
163.0
161.0
184.0
167.0
157.0
153.0
145.0
166.0
146.0
j
154.0
153.0
156.0
Res. 2
151.0
156.0
150.0
165.0
174.0
149.0
177.0
177.0
153.0
140.0
147.0
149.0
161.0
159.0
161.0
158.0
-
165.0
139.0
156.0
153.0
155.0
sl$
160.0
260.0
163.0
161.0
' - 7&# " -
156.0
156.0
140.0
170.0
158.0
153.0
184.0
166.0
160.0
154.0
145.0
155.0
150.0
157.0
152.0
142.0
Res. 3
153.0
156.0
161.0
157.0
170.0
151.0
177.0
175.0
145.0
158.0
147.0
147.0
163.0
160.0
162.0
165.0
148.0
146.0
159.0
154.0
156.0
85.0
160.0
JKNMF
163.0
164.0
'"';T4*0',
155.0
157.0
150.0
175.0
164.0
157.0
18,1.0
166.0
163.0
152.0
145.0
161.0
150.0
148.0
154.0
141.0
s No data submitted
0
Insufficient
data
X 3
Sigma (R
1.53
1.15
6.66
4.04
11.15
1.15
8.08
9.29
4.62
9.02
0.58
1.53
2.00
1.00
3.79
3.61
f
8.62
7.00
1.53
0.58
3.79
2.08
0.00
10J0
0.58
12.50
1.63
1.53
0.58
10.00
5.00
3.21
4.00
1.73
0.58
3.00
1.00
0.00
5.51
2.31
4.58
1.00
8.39
+ SR)
0.118
0.079
0.473
0.315
0.827
0.079
0.551
0.669
0.315
0.709
0.039
0.118
0.158
0.079
0.276
0.276
0.669
0.551
0.118
0.039
0.276
0.158
0.000
o.m
0.039
0.906
0.11S
0.118
0.039
0.788
0.394
0.236
0.315
0.118
0.039
0.236
0.079
0.000
0.433
0.158
0.354
0.079
0.591
Average
152.67
156.67
153.33
160.67
178.33
149.67
172.33
170.67
147.67
149.33
146.67
147.33
161.00
160.00
159.33
161.00
155.67
139.00
157.67
153.33
153.33
82.$?
160.00
370.00
162.67
169.67
7S.B3
154.67
156.67
150.00
170.00
161.67
157.00
183.00
166.33
160.00
153.00
145.00
160.67
148.67
153.00
153.00
146.33
TAG SYMBOLS
Determined to be an outlier
Normalized deviation
(grand-avg) (known) Tag
-0.51
-0.05
-0.44
0.41
2.45
-0.86
1.76
1.57
-1.09
-0.90
-1.21
-1.13
0.45
0.33
0.26
0.45
-0.17
-2.09
0.07
-0.44
-0.44
-BM
0.33
13,04
0.64
1.45
~&7#
-0.28
-0.05
-0.82
1.49
0.53
-0.01
I
2.99
1.07
0.33
-0.47
-1.40
0.41
-0.97
-0.47
-0.47
-1.24
ft s Above
JJ. s Below
0.54
1.00
0.62
1.46
3.50 ft
0.19
2.81
2.62
-0.04
0.15
-0.15
-0.08
1.50
1.39
1.31
1.50
»
0.89
-1.04
1.12
0.62
0.62
-7J4 X
1.39
140& X
1.69
2.50
-3.74 X
0.77
1.00
0.23
2.54
1.58
1.04
4.04 ft
2.12
1.39
0.58
-0.35
1.46
0.08
0.58
0.58
-0.19
control limit
control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, 9-Oct-1992
Zinc-65
Lab
DR
DT
DZ
E
EA
EB
EH
EL
EN
nw
EX
BZ
FE
FJ
FL
FU
FZ
GE
GI
GL
HI
HJ
HK
HL
HP
HU
I
IA
1C
IU
J
JR
JS
JY
K
KF
KH
KL
KM
KX
L
LA
LF
LM
LT
Res. 1
169.0
169.0
164.0
150.0
154.0
152.0
148.0
156.0
170.0
j.
164.0
1,0
160.0
147.0
167.0
161.0
160.0
148.0
145.0
154.0
140.0
158.0
157.0
148.0
188.0
152.0
156.0
158.0
165.0
157.0
150.0
151.0
170.0
142.0
142.0
161.0
154.0
155.0
178.0
150.0
160.0
Res. 2
169.0
149.0
172.0
148.0
155.0
148.0
151.0
146.0
170.0
'
159.0
10
170.0
136.0
165.0
165.0
160.0
157.0
150.0
158.0
136.0
163.0
159.0
148.0
182.0
155.0
157.0
'/''/ , '
168.0
158.0
158.0
150.0
155.0
180.0
154.0
139.0
158.0
152.0
156.0
176.0
160.0
160.0
Res. 3
178.0
135.0
169.0
147.0
154.0
154.0
163.0
144.0
165.0
145.0
1,0
170.0
155.0
167.0
174.0
160.0
154.0
152.0
156.0
154.0
160.0
153.0
146.0
185.0
156.0
153.0
- , '
157.0
158.0
158.0
154.0
166.0
167.0
165.0
135.0
154.0
152.0
155.0
163.0
150.0
160.0
s No data submitted
0 9
Insufficient
data
X s
11/43
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
5.20
17.09
4.04
1.53
0.58
3.06
7.94
6.43
2.89
9.85
0.00
5.77
9.54
1.15
6.66
0.00
4.58
3.61
2.00
9.45
2.52
3.06
1.15
3.00
2.08
2.08
6.08
4.04
0.58
2.31
7.77
6.81
11.50
3.51
3.51
1.15
0.58
8.14
5.77
0.00
0.354
1.645
0.315
0.118
0.039
0.236
0.591
0.473
0.197
0.748
0,000
0.394
0.748
0.079
0.512
0.000
0.354
0.276
0.158
0.709
0.197
0.236
0.079
0.236
0.158
0.158
0.433
0.276
0.039
0.158
0.591
0.512
0.906
0.276
0.276
0.079
0.039
0.591
0.394
0.000
172.00
151.00
168.33
148.33
154.33
151.33
154.00
148.67
168.33
156.00
1.00
166.67
146.00
166.33
166.67
160.00
153.00
149.00
156.00
143.33
160.33
156.33
147.33
185.00
154.33
155.33
161.00
160.33
157.67
151.33
157.33
172.33
153.67
138.67
157.67
152.67
155.33
172.33
153.33
160.00
TAG SYMBOLS
Determined to
be an
outlier
1.72
-0.70
1.30
-1.01
-0.32
-0.67
-0.36
-0.97
1.30
-0.13
-18.03
1.10
-1.28
1.07
1.10
0.33
-0.47
-0.94
-0.13
-1.59
0.37
-0.09
-1.13
3.22
-0.32
-0.20
0.45
0.37
0.07
-0.67
0.03
1.76
-0.40
-2.13
0.07
-0.51
-0.20
1.76
-0.44
0.33
ft = Above
!] = Below
2.77
0.35
2.35
0.04
0.73
0.38
0.69
0.08
2.35
0.92
16.97 x
2.16
-0.23
2.12
2.16
1.39
0.58
0.12
0.92
-0.54
1.42
0.96
-0.08
4.27 ft
0.73
0.85
1.50
1.42
1.12
0.38
1.08
2.81
0.65
-1.08
1.12
0.54
0.85
2.81
0.62
ijill* :.''"
1.39
control limit
control limit
-------
12 /
43 EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
Zinc-65
Lab
M
MA
ME
ML
MN
MP
MQ
MS
MT
MV
MY
N
NI
NJ
NK
NP
NZ
O
OA
OB
OM
OO
OT
PB
PC
PE
PP
PQ
PT
PU
PV
PW
PX
PY
Q
QB
QJ
QL
QP
QQ
QT
QX
QZ
Res. 1
160.0
156.0
172.0
157.0
154.0
169.0
165.0
167.0
119.0
166.0
160.0
142.0
146.0
147.0
165.0
153.0
160.0
167.0
164.0
168.0
159.0
155.0
163.0
147.0
156.0
155.0
153.0
155.0
161.0
162.0
152.0
173.0
148.0
161.0
150.0
Res. 2
163.0
157.0
167.0
149.0
156.0
170.0
148.0
156.0
132.0
141.0
160.0
152.0
172.0
135.0
164.0
152.0
157.0
' ,
"
167.0
167.0
160.0
156.0
145.0
163.0
151.0
159.0
160.0
150.0
''
151.0
155.0
154.0
148.0
157.0
146.0
161.0
156.0
Res. 3
162.0
160.0
172.0
f
145.0
158.0
172.0
158.0
158.0
127.0
fm ,
159.0
160.0
147.0
172.0
161.0
164.0
153.0
154.0
'
*
163.0
170.0
164.0
% f
157.0
152.0
148.0
145.0
152.0
152.0
156.0
155.0
183.0
150.0
165.0
129.0
160.0
167.0
151.0
= No data submitted
0 a
Insufficient
data
X a
Exper.
Sigma
1.53
2.08
2.89
6.11
2.00
1.53
8.54
5.86
6.56
12.90
0.00
5.00
15.01
13.01
0.58
0.58
3.00
-
2.31
3.00
4.00
-
1.53
5.13
8.66
3.06
3.51
4.04
3.00
2.31
14.74
6.11
8.89
22.27
7.57
3.46
3.21
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.118
0.158
0.197
0.473
0.158
0.118
0.669
0.433
0.512
6.984
0.000
0.394
1.045
1.045
0.039
0.039
0.236
0.158
0.236
0.315
0.118
0.394
0.591
0.236
0.276
0.315
0.236
0.158
1.195
0.473
0.669
2.395
0.551
0.236
0.236
161.67
157.67
170.33
150.33
156.00
170.33
157.00
160.33
126.00
155.33
160.00
147.00
163.33
147.67
164.33
152.67
157.00
165.67
167.00
164.00
157.33
150.67
158.00
147.67
155.67
155.67
153.00
153.67
166.33
155.33
155.00
153.00
151.33
163.00
152.33
TAG SYMBOLS
Determined
to be an
outlier
0.53
0.07
1.53
-
-0.78
-0.13
1.53
-0.01
0.37
-3.59
-0.20
0.33
-1.17
0.72
-1.09
0.83
-0.51
-0.01
0.99
1.14
0.80
0.03
-0.74
0.10
-1.09
-0.17
-0.17
-0.47
-0.40
1.07
-0.20
-0.24
-0.47
-0.67
0.68
-0.55
It 3 Above
li = Below
1.58
1.12
2.58
t
*
0.27
0.92
2.58
1.04
1.42
-2.54
»
0.85
1.39
-0.12
1.77
-0.04
1.89
0.54
1.04
»
»
2.04
2.19
1.85
*
1.08
0.31
1.15
-0.04
0.89
0.89
0.58
0.65
2.12
0.85
0.81
0.58
0.38
1.73
0.50
control limit
control limit
-------
Zinc-65
Lab Res. 1
R 152.0
RA 148.0
RC 171.0
RK 1160,0
RO 162.0
RQ 188.0
RR
RU
RV 151.0
RZ 164.0
8
ISA
SC 156.0
SD 175.0
SI 154.0
SK
SS 146.0
ST 157.0
SZ 165.0
T 140.0
TA 155.0
TB 171.0
TC -
TB
TE 171.0
TF
TG 144.0
TI 169.0
TK
TL ItfcO
$*> 76.0
TR 172.0
TU 159.0
TZ
U 136.0
W 141.0
X 165.0
Y 145.0
Z 146.0
EMSL-LV
Res. 2
154.0
156.0
164.0
1300.0
163.0
188.0
141.0
166.0
146.0
176.0
157.0
154.0
154.0
169.0
149.0
144.0
169.0
173.0
-
129.0
169.0
f j
120.0
&.0
152.0
158.0
"
154.0
148.0
151.0
147.0
151.0
Intel-comparison Study: Gamma
Exper.
Res. 3 Sigma
150.0 2.00
148.0 4.62
167.0 3.51
1230,0 70.00
153.0 5.51
188.0 0.00
- ,
151.0 5.77
165.0 1.00
'
.. ' '
157.0 6.08
168.0 4.36
153.0 2.08
153.0 4.36
158.0 2.08
164.0 2.65
139.0 5.51
135.0 10.02
170.0 1.00
, ' *
'
161.0 6.43
,
130.0 8.39
148.0 12.12
; / j", ..,/,
-'Ifc'fcO 5,18
,; -, -'TIM* 3*00
156.0 10.58
156.0 1.53
' '
147.0 9.07
146.0 3.61
170.0 9.85
149.0 2.00
155.6 4.51
Rng anal
(R + SR)
0.158
0.315
0.276
9-596
0.394
0.000
0.394
0.079
'
0.433
0.315
0.158
0.315
0.158
0.197
0.394
0.788
0.079
0.473
0.591
0.827
0.394
0.236
0.788
0.118
0.709
0.276
0.748
0.158
0.354
in Water, 9-Oct-1992 13/43
^
Normalized deviation
Average (grand-avg) (known) Tag
152.00 -0.59 0.46
150.67 -0.74 0.31
167.33 1.18 2.23
1230.00 123.89 124.94 x
159.33 0.26 1.31
188.00 3.57 4.62 ft
.
147.67 -1.09 -0.04
165.00 0.91 1.96
>
153.00 -0.47 0.58
173.00 1.84 2.89
154.67 -0.28 0.77
151.00 -0.70 0.35
156.33 -0.09 0.96
166.00 1.03 2.08
142.67 -1.67 -0.62
144.67 -1.44 -0.38
170.00 1.49 2.54
;*
168.33 1.30 2.35
»
134.33 -2.63 -1.58
162.00 0.57 1.62
»
121.33 -4.13 *3<08 x
75.00 -9.48 '8,43 x
160.00 0.33 1.39
157.67 0.07 1.12
145.67 -1.32 -0.27
145.00 -1.40 -0.35
162.00 0.57 1.62
147.00 -1.17 -0.12
150.67 -0.74 0.31
Data sorted by Laboratory Average
Average
1.00
72.33
75.00
Tag
x
x
X
s No data submitted
0 s Insufficient data
Lab Average
EZ 82.67
CC 121.33
TO 126.00
Tag
x
x
TAG SYMBOLS
Lab Average Tag Lab
BN 134.33 TG
TL 138.67 KH
MY 139.00 BI
ft = Above control limit
x = Determined to be an outlier U = Below control limit
-------
14/43
Zinc-65
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
Data sorted by Laboratory Average
Average
142.67
143.33
144.67
145.00
145.00
145.67
146.00
146.33
146.67
147.00
147.00
147.33
147.33
147.67
147.67
147.67
147.67
148.33
148.67
148.67
149.00
149.33
149.67
150.00
150.33
150.67
150.67
150.67
151.00
151.00
151.33
151.33
151.33
152.00
152.33
152.67
152.67
152.67
153.00
153.00
153.00
153.00
153.00
153.00
s No data
Tag Lab
T
HI
TA
W
DE
U
FJ
DO
AW
Y
NK
HL
AY
RV
PU
NZ
AP
E
EL
DH
GI
AU
AK
CK
MP
Z
RA
PQ
SS
DT
QT
JR
EB
R
QZ
OA
KM
A
SC
QP
PX
GE
DM
DL
Average Tag
153.00
153.33
153.33
153.33
153.33
153.67
153.67
154.00
154.33
154.33
154.67
154.67
155.00
155.33
155.33
155.33
155.33
155.67
155.67
155.67
156.00
156.00
156.00
156.33
156.33
156.67
156.67
157.00
157.00
157.00
157.33
157.33
157.67
157.67
157.67
157.67
157.67
158.00
159.33
159.33
160.00
160.00
160.00
160.00
submitted TAG SYMBOLS
0 s Insufficient data x s Determined to be an
Lab
DD
LF
BM
BL
AF
Q
K
EH
HU
EA
SI
CE
QL
QJ
NI
KX
I
PW
PV
BH
MQ
GL
EX
ST
HK
CJ
AE
OB
MT
CQ
PP
JS
TU
MA
KL
J
BK
PT
RO
BB
TR
NJ
LT
FZ
Average Tag
160.00
160.00
160.00
160.33
160.33
160.33
160.67
160.67
161.00
161.00
161.00
161.67
161.67
162.00
162.00
162.67
163.00
163.33
164.00
164.33
165.00
165.67
166.00
166.33
166.33
166.33
166.67
166.67
167.00
167.33
168.33
168.33
168.33
169.67
170.00
170.00
170.33
170.33
170.67
172.00
172.33
172.33
172.33
173.00
IT = Above control
outlier ^ s Below control
Lab
D
BO
BA
MV
IU
HJ
DG
AI
1C
BC
AZ
M
CP
X
TI
C
QX
NP
PC
o
RZ
OT
SZ
QB
FL
CX
FU
FE
PB
RC
TE
EN
DZ
CA
TB
CO
MS
ME
AN
DR
L
JY
AL
SD
limit
limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992 15/43
Ztnc-65
Data sorted by Laboratory Average
Average Tag Lab Average Tag Lab Average Tag Lab
178.33 tr AJ 185.00
183.00 IT CS 188.00
IT HP 270.00 x BW
tr RQ 1230.00 x RK
% Frequency distribution of responding labs( expected prec. vs known value)
10* ------------------------
8 _ _
_l_
llll.l.ll
'6 ' -'4 exp. prec. -2 ' ^Jmo. +2 exp' prec' +4 **
value
% Frequency distribution of responding labs(std. dev. vs mean value)
10-
. ______________________ _«
Qm _ _ _ _T -.lilt
-* '4 std. dev. -2
l|1|
nf.liji.-i _ T_ _
A ' +2 std.'dev. *< ' +*
mean
value
s No data submitted TAG SYMBOLS tT = Above control limit
0 = Insufficient data x s Determined to be an outlier $ = Below control limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
16/43
Ruthenium-106 Statistical Summary 174 Participants
The known value of this nuclide is 175.0 pCi/I with an expected precision of 18.0; the control limits
are 143.8 to 206.2; the warning regions are 143.8 to 154.2 and 195.8 to 206.2
31(17.8 %) Failed to respond »
6(3.4 %) Outliers
14(8.0 %) Out of control
but not an outlier
Statistic
. 86(49.4 %) Within all limits
Respondents
37(21.3 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
163.74 Grand Avg 160.69
77.16 14.64
5953.58 214.19
47.12 9.11
-6.43 -8.18
-0.15 -0.98
158.67 159.33
-9.33 -8.95
-0.21 -1.07
2O(14.O %) More than 3 norm. S.D. ,
37(25.9 %) Between 2 and 3 norm. S.D.
. 37(25.9 %) Within 1 norm. S.D.
.' of known value
49(34.3 %) Between 1 and 2 norm. S.D.
-------
17/
43 EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
Ruthenium-106
Lab
A
AE
AF
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BO
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CC
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DJ
DL
DM
DO
Res. 1
165.0
140.0
152.0
155.0
156.0
143.0
146.0
187.0
183.0
140.0
196.0
170.0
116.0
145.0
158.0
170.0
'
164.0
im&
148.0
160.0
164.0
d«.a
160.0
153.0
170.0
71.&
164.0
160.0
160.0
168.0
153.0
189.0
184.0
158.0
131.0
153.0
153.0
166.0
155.0
180.0
164.0
183.0
Res. 2
162.0
124.0
148.0
159.0
156.0
154.0
166.0
191.0
163.0
160.0
177.0
152.0
151.0
138.0
153.0
162.0
161.0
117.4
164.0
164.0
147.0
86.0
150.0
157.0
172.0
69.0
181.0
173.0
150.0
150.0
154.0
184.0
186.0
159.0
141.0
150.0
154.0
157.0
155.0
182.0
165.0
156.0
Res. 3
158.0
135.0
146.0
148.0
146.0
153.0
153.0
157.0
141.0
150.0
177.0
168.0
143.0
137.0
150.0
153.0
'
162.0
lOld
148.0
159.0
154.0
t7.£
160.0
156.0
170.0
74.0
168.0
160.0
160.0
159.0
155.0
177.0
193.0
159.0
134.0
148.0
154.0
169.0
156.0
179.0
165.0
146.0
= No data submitted
0 B
Insufficient
data
X S
Exper.
Sigma
3.51
8.19
3.06
5.57
5.77
6.08
10.15
18.58
21.01
10.00
10.97
9.87
18.34
4.36
4.04
8.50
1.53
8.02
9.24
2.65
8.54
493
5.77
2.08
1.15
2.62
8.89
7.51
5.77
9.00
1.00
6.03
4.73
0.58
5.13
2.52
0.58
6.24
0.58
1.53
0.58
19.14
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.230
0.525
0.197
0.361
0.328
0.361
0.656
1.220
1.720
0.656
0.623
0.591
1.283
0.263
0.263
0.558
0.098
0.525
0.525
0.164
0.558
0.296
0.328
0.131
0.066
0.164
0.558
0.427
0.328
0.591
0.066
0.394
0.295
0.033
0.328
0.164
0.033
0.394
0.033
0.098
0.033
1.408
161.67
133.00
148.67
154.00
152.67
150.00
155.00
178.33
162.33
150.00
183.33
163.33
136.67
140.00
153.67
161.67
162.33
109.33
153.33
161.00
155.00
82.67
156.67
155.33
170.67
nm
171.00
164.33
156.67
159.00
154.00
183.33
187.67
158.67
135.33
150.33
153.67
164.00
155.33
180.33
164.67
161.67
TAG SYMBOLS
Determined
to be an
outlier
0.09
-2.66
-1.16
-0.64
-0.77
-1.03
-0.55
1.70
0.16
-1.03
2.18
0.25
-2.31
-1.99
-0.68
0.09
0.16
-4.94
-0.71
0.03
-0.55
-7,61
-0.39
0.52
0.96
-SJ0
0.99
0.35
-0.39
-0.16
-0.64
2.18
2.60
-0.19
-2.44
-1.00
-0.68
0.32
-0.52
1.89
0.38
0.09
IT = Above
U s Below
-1.28
-4.04 li
-2.53
-2.02
-2.15
-2.41
-1.92
0.32
-1.22
-2.41
0.80
-1.12
-3.69 li
-3.37 JJ
-2.05
-1.28
»
-1.22
-6,32 x
-2.08
-1.35
-1.92
-8.88 x
-1.76
»
-1.89
-0.42
-9.98 X
-0.38
-1.03
-1.76
-1.54
-2.02
0.80
1.22
-1.57
-3.82 11
-2.37
-2.05
-1.06
-1.89
0.51
-0.99
-1.28
control limit
control limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
Ruthenium-106
Lab Res. 1 Res. 2
DR
DT
DZ
E
EA
EB
EH
EL
EN
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
HI
HJ
HK
HL
HP
HU
I
IA
1C
IU
J
JR
JS
JY
K
KF
KH
KL
KM
KX
L
LA
LF
LM
LT
=
0 s
203.0
136.0
166.0
164.0
151.0
147.0
162.0
161.0
170.0
to
130.0
158.0
168.0
135.0
170.0
179.0
142.0
168.0
145.0
175.0
161.0
157.0
190.0
150.0
169.0
f4ff ,ff* f f
135.0.
147.0
144.0
161.0
195.0
189.0
150.0
165.0
166.0
173.0
169.0
151.0
170.0
160.0
172.0
140.0
s
160.0
170.0
153.0
147.0
162.0
178.0
179.0
- - ; 10
200.0
158.0
188.0
144.0
170.0
182.0
156.0
170.0
192.0
181.0
171.0
149.0
181.0
155.0
153.0
', , ' ,,"{* '<.',
151.0
147.0
150.0
162.0
209.0
154.0
146.0
164.0
156.0
188.0
173.0
145.0
160.0
,
160.0
Res. 3
194.0
157.0
144.0
164.0
160.0
149.0
135.0
185.0
192.0
to
190.0
147.0
180.0
154.0
150.0
180.0
149.0
174.0
137.0
181.0
168.0
155.0
186.0
155.0
160.0
f
157.0
132.0
138.0
161.0
201.0
174.0
122.0
168.0
168.0
195.0
169.0
149.0
160.0
160.0
No data submitted
Insufficient
data
x =
18/43
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
15.95
11.15
,
11.37
3.46
4.73
1.15
15.59
12.34
11.06
-------
197
43 EMSL-LV Intercomparison Study: Gamma
in Water,
9-Oct-1992
1
Ruthenium- 1 06
Lab
M
MA
ME
ML
MN
MP
MQ
MS
MT
MV
MY
N
NI
NJ
NK
NP
NZ
O
OA
OB
OL
OM
00
OT
PB
PC
PE
PP
PQ
PT
PU
PV
PW
PX
PY
Q
QB
QC
QJ
QL
QP
QQ
QT
QX
QZ
Res. 1
158.0
142.0
159.0
145.0
182.0
150.0
147.0
159.0
147.0
150.0
160.0
140.0
151.0
166.0
148.0
159.0
207.0
153.0
143.0
157.0
142.0
146.0
149.0
130.0
180.0
161.0
146.0
185.0
189.0
156.0
173.0
160.0
201.0
128.0
Res. 2
155.0
157.0
145.0
147.0
190.0
144.0
141.0
152.0
144.0
'' '
112.0
160.0
146.0
149.0
166.0
150.0
160.0
f
, , ,
147.0
166.0
155.0
_. "
154.0
126.0
144.0
166.0
138.0
185.0
162.0
152.0
182.0
146.0
163.0
134.0
183.0
202.0
136.0
Res. 3
160.0
149.0
157.0
149.0
202.0
144.0
154.0
144.0
151.0
f
144.0
160.0
137.0
179.0
.
167.0
156.0
161.0
-.
, ....,,,
226.0
145.0
146.0
152.0
161.0
139.0
159.0
140.0
173.0
168.0
149.0
154.0
151.0
156.0
187.0
185.0
201.0
128.0
= No data submitted
0 B
Insufficient
data
X 3
Exper.
Sigma
2.52
7.51
7.57
'
2.00
10.07
3.46
6.51
7.51
3.51
20.43
0.00
4.58
16.77
0.58
4.16
1.00
'
41.24
10.60
6.24
2.52
17.52
3.61
8.54
5.29
6.03
3.79
3.00
17.10
23.52
4.04
27.47
13.89
0.58
4.62
Rnganal
(R + SR)
0.164
0.492
0.459
0.131
0.656
0.197
0.427
0.492
0.230
*
L470
0.000
0.295
0.984
0.033
0.263
0.066
4.033
0.689
0.394
0.164
1.283
0.230
0.558
0.328
0.394
0.230
0.197
1.033
1.783
0.230
2.408
0.820
0.033
0.263
Normalized deviation
Average
157.67
149.33
153.67
147.00
191.33
146.00
147.33
151.67
147.33
135.33
160.00
141.00
159.67
166.33
151.33
160.00
193.33
154.67
148.00
154.33
143.00
143.00
158.00
136.00
179.33
163.67
149.00
173.67
162.00
158.33
164.67
176.00
201.33
130.67
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
-0.29
-1.09
-0.68
-1.32
2.95
-1.41
-1.29
-0.87
-1.29
-2.44
-0.07
-1.89
-0.10
0.54
-0.90
-0.07
3.14
-0.58
-1.22
-0.61
-1.70
-1.70
-0.26
-2.38
1.79
0.29
-1.12
1.25
0.13
-0.23
0.38
1.47
3.91
-2.89
It s Above
Ji s Below
-1.67
-2.47
-2.05
*
*
-2.69
1.57
-2.79
-2.66
-2.25
-2.66
.
-3.82 IT
-1.44
-3.27 tt
-1.48
»
-0.83
-2.28
-1.44
*
»
1.76
-1.96
-2.60
«
-1.99
-3.08 U
-3.08 Ji
-1.64
-3.75 U
0.42
-1.09
*
-2.50
-0.13
-1.25
-1.60
-0.99
«
0.10
2.53
-4.27 Ji
control limit
control limit
-------
EMSL-LV Intercomparison Study: Gamma
Ruthenium-106
Lab Res. 1 Res. 2
R 174.0 169.0
RA 171.0 154.0
RC 181.0 165.0
RK 988.0 1090.0
RO 167.0 157.0
RQ 182.0 182.0
jot
Rtf
RV 186.0 89.0
RZ 160.0 163.0
8
SA ' " "'" '
SC 150.0 141.0
SD 164.0 165.0
SI 134.0 176.0
m ' .
SS 158.0 171.0
ST 177.0 176.0
SZ 166.0 160.0
T 131.0 131.0
TA 178.0 174.0
TB 182.0 172.0
TD ;
TE 198.0 190.0
TF - . -
TG 164.0 156.0
TI 189.0 184.0
TK. ' - ''- ' '< '' '«
TL 163.0 141.0
WQ J02;0 -^ ',9&0;
'' 1511. ' " " * '''' "' ' ' "''"''/'
Jt WH " "" '-ff ff S' J
TU 180.0 178.0
TZ ' ,'' '
U 156.0 175.0
W 124.0 159.0
X 136.0 165.0
Y 157.0 158.0
Z 150.0 154.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
159.0 7.64 0.492
173.0 10.44 0.623
196.0 15.50 1.033
, 103&0 51.00 6,471
186.0 14.73 0.952
182.0 0.00 0.000
'- '; ,
,
139.0 48.51 5.158
160.0 1.73 0.098
,' / ' "'
..
153.0 6.24 0.394
168.0 2.08 0.131
152.0 21.07 1.720
,,
173.0 8.14 0.492
193.0 9.54 0.558
163.0 3.00 0.197
138.0 4.04 0.230
169.0 4.51 0.295
179.0 5.13 0.328
f
174.0 12.22 0.788
< .
158.0 4.16 0.263
170.0 9.85 0.623
"f'^'"/, '-'/' '? ' '
169.0 14.74 0.919
^'v'*'fM'' '-' *& *****
>"'l;S;t?''',"f',$, ' ' ''":'
s X Sv^ jf /'*&**''* f S
177.0 1.53 0.098
;
162.0 9.71 0.623
150.0 18.18 1.283
145.0 14.84 0.952
154.0 2.08 0.131
152.0 2.00 0.131
in Water, 9-Oct-1992 20/43
^
Normalized deviation
Average (grand-avg) (known) Tag
167.33 0.64 -0.74
166.00 0.51 -0.87
180.67 1.92 0.55
1039.00 84.52 83.14 x
170.00 0.90 -0.48
182.00 2.05 0.67
*
138.00 -2.18 -3.56 U
161.00 0.03 -1.35
148.00 -1.22 -2.60
165.67 0.48 -0.90
154.00 -0.64 -2.02
167.33 0.64 -0.74
182.00 2.05 0.67
163.00 0.22 -1.15
133.33 -2.63 -4.01 U
173.67 1.25 -0.13
177.67 1.63 0.26
.
187.33 2.56 1.19
*
159.33 -0.13 -1.51
181.00 1.95 0.58
*
157.67 -0.29 -1.67
97,67 *&06 -7.44 x
*
«
178.33 1.70 0.32
*
164.33 0.35 -1.03
144.33 -1.57 -2.95
148.67 -1.16 -2.53
156.33 -0.42 -1.80
152.00 -0.84 -2.21
Data sorted by Laboratory Average
Average Tag
1.00 x
71.33 x
82.67 x
s No data submitted
0 s Insufficient data
Lab Average Tag
EZ 97.67 x
CC 109.33 x
BN 130.67 U
TAG SYMBOLS
Lab Average Tag Lab
TO 133.00 JJ AE
BI 133.33 li T
QZ 135.33 II NI
ft = Above control limit
x s Determined to be an outlier li a Below control limit_^
-------
21/43 EMSL-LV
Ruthenium-106
Intel-comparison Study: Gamma in Water, 9-Oct-1992
Data sorted by Laboratory Average
Average Tag
135.33 U
136.00 tt
136.67 U
138.00 U
139.33 U
140.00 U
141.00 U
142.00 U
143.00 U
143.00 Ji
144.00
144.33
144.33
144.33
146.00
147.00
147.33
147.33
147.67
147.67
148.00
148.00
148.33
148.67
148.67
149.00
149.00
149.33
150.00
150.00
150.33
151.33
151.67
152.00
152.67
153.00
153.33
153.33
153.67
153.67
153.67
153.67
154.00
154.00
3 No data submitted
0 3 Insufficient data
Lab
D
PV
AZ
RV
K
BA
NK
IU
PT
PQ
J
W
FU
DT
MS
MP
MY
MT
1C
EH
SC
PC
L
X
AF
Q
GI
MA
AU
AK
DD
OA
MV
Z
AJ
EL
HU
BK
ME
HL
DE
BB
SI
CP
Average Tag
154.00
154.33
154.33
154.67
154.67
155.00
155.00
155.33
155.33
156.33
156.67
156.67
156.67
157.67
157.67
158.00
158.00
158.33
158.67
159.00
159.33
159.67
160.00
160.00
160.00
160.67
161.00
161.00
161.33
161.67
161.67
161.67
162.00
162.33
162.33
163.00
163.33
163.33
163.33
163.33
163.67
164.00
164.33
164.33
TAG SYMBOLS
x 3 Determined to be an
Lab
AI
PP
FJ
PB
EB
BM
AL
DH
C
Y
E
CK
BO
TL
M
PU
HI
QL
CX
CO
TG
NP
OB
NJ
LT
I
RZ
BL
JR
DO
BC
A
QJ
BH
AP
SZ
LF
KL
FZ
AY
PX
DG
U
CJ
Average Tag
164.67
164.67
165.67
165.67
166.00
166.00
166.33
166.67
167.33
167.33
170.00
170.33
170.67
170.67
171.00
172.33
173.33
173.67
173.67
174.67
176.00
177.67
178.33
178.33
178.67
179.00
179.33
180.33
180.33
180.33
180.67
181.00
182.00
182.00
183.33
183.33
185.33
185.67
187.33
187.67
189.67
191.33
193.33
201.33
ft s Above
outlier Jl s Below
Lab
QP
DM
SD
KH
RA :
EA
O
HK
ss
R
RO
KX
GL
CA
CE
JY
FE
TA
QB
EN
QT
TB
TU
AN
FL
HJ
PW
GE
EX
DL
RC
n
ST
RQ
CQ
AW
KM
HP
TE
CS
DR
MQ
OT
QX
control limit
control limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9»Oct-1992 22/43
Ruthenium- 106
Data sorted by Laboratory Average
Average Tag Lab Average Tag Lab Average Tag Lab
201.67
JS 1039.00 x RK
% Frequency distribution of responding labs(expected prec. vs known value)
10- - - - - .... ^
.. I-J...I-.
>"" T.... f l.if illlf 1
._ll -
o * exp. prec. ~z ^. ° ** exp. prec. ** +6
value
% Frequency distribution of responding labs(std. dev. vs mean value)
JUT" ------------
1
-* -4 std. dev. -2
J.
.lllll_»..lf .
0 +2 std. dev. +4 +*
mean
value
s No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data x s Determined to be an outlier !! = Below control limit
-------
EM8L-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
23/43
Ceaium-134 Statistical Summary 174 Participants
The known value of this nuclide is 8.0 pCi/I with an expected precision of 5.0; the control limits
are 0.0 to 16.7; the warning regions are 0.0 to 2.2 and 13.8 to 16.7
28(16.1 %) Failed to respond ..
1 (O.6 %) Outliers
Statistic
; 143(82.2 %) Within all limits
Respondents
* 2(1.1 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
8.45
4.13
17.07
48.88
5.68
0.11
8.00
0.00
0.00
Grand Avg 8.14
1.64
2.69
20.14
1.75
0.09
8.00
0.00
0.00
1(O.7 %) More than 3 norm. S.D. ».,
2(1.4 %) Between 2 and 3 norm. S.D. '
; 134(91.8 %) Within 1 norm. S.D.
' of known value
9(6.2 %) Between 1 and 2 norm. S.D.
-------
247
43 EMSL-LV Intel-comparison Study : Gamma in Water, 9-Oct-1992
Cesium-134
Lab
A
AE
AF
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BO
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CC
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DJ
DL
DM
DO
Res. 1
8.0
10.0
7.0
8.0
7.0
8.0
9.0
10.0
10.0
7.0
10.0
8.0
9.0
7.0
8.0
8.0
8.0
8.0
8.0
7.0
6.0
4.0
7.0
12.0
9.0
9.0
3.0
8.0
9.0
8.0
8.0
8.0
10.0
9.0
9.0
7.0
7.0
7.0
10.0
8.0
11.0
8.0
11.0
Res. 2
8.0
8.0
7.0
7.0
7.0
8.0
10.0
10.0
7.0
8.0
10.0
8.0
10.0
6.0
8.0
8.0
8.0
10.0
7.0
8.0
8.0
4.0
7.0
12.0
9.0
9.0
3.0
8.0
8.0
8.0
9.0
8.0
8.0
9.0
9.0
6.0
7.0
8.0
7.0
7.0
6.0
8.0
9.0
Res. 3
7.0
9.0
6.0
7.0
7.0
8.0
9.0
9.0
8.0
9.0
9.0
7.0
12.0
9.0
7.0
7.0
8.0
10.0
9.0
8.0
7.0
4.0
8.0
15.0
9.0
11.0
4.0
8.0
9.0
8.0
10.0
8.0
11.0
9.0
9.0
8.0
7.0
8.0
6.0
8.0
7.0
8.0
9.0
s No data submitted
0*
Insufficient
data
X S
Exper.
Sigma
0.58
1.00
0.58
0.58
0.00
0.00
0.58
0.58
1.53
1.00
0.58
0.58
1.53
1.53
0.58
0.58
0.00
1.15
1.00
0.58
1.00
0.00
0.58
1.73
0.00
1.15
0.58
0.00
0.58
0.00
1.00
0.00
1.53
0.00
0.00
1.00
0.00
0.58
2.08
0.58
2.65
0.00
1.15
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.118
0.236
0.118
0.118
0.000
0.000
0.118
0.118
0.354
0.236
0.118
0.118
0.354
0.354
0.118
0.118
0.000
0.236
0.236
0.118
0.236
0.000
0.118
0.354
0.000
0.236
0.118
0.000
0.118
0.000
0.236
0.000
0.354
0.000
0.000
0.236
0.000
0.118
0.473
0.118
0.591
0.000
0.236
7.67
9.00
6.67
7.33
7.00
8.00
9.33
9.67
8.33
8.00
9.67
7.67
10.33
7.33
7.67
7.67
8.00
9.33
8.00
7.67
7.00
4.00
7.33
13.00
9.00
9.67
3.33
8.00
8.67
8.00
9.00
8.00
9.67
9.00
9.00
7.00
7.00
7.67
7.67
7.67
8.00
8.00
9.67
TAG SYMBOLS
Determined
to be an
outlier
-0.16
0.30
-0.51
-0.28
-0.39
-0.05
0.41
0.53
0.07
-0.05
0.53
-0.16
0.76
-0.28
-0.16
-0.16
-0.05
0.41
-0.05
-0.16
-0.39
-1.43
-0.28
1.68
0.30
0.53
-1.67
-0.05
0.18
-0.05
0.30
-0.05
0.53
0.30
0.30
-0.39
-0.39
-0.16
-0.16
-0.16
-0.05
-0.05
0.53
ft H Above
Jl s Below
-0.12
0.35
-0.46
-0.23
-0.35
0.00
0.46
0.58
0.12
0.00
0.58
-0.12
0.81
-0.23
-0.12
-0.12
»
0.00
0.46
0.00
-0.12
-0.35
-1.39
-0.23
1.73
0.35
0.58
-1.62
0.00
0.23
0.00
0.35
0.00
0.58
0.35
0.35
-0.35
-0.35
-0.12
-0.12
-0.12
0.00
0.00
0.58
control limit
control limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water,
Cesium-134
Lab Res. 1
DR
DT
DZ
E
EA
EB
EH
EL
EN
EW
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
HI
HJ
HK
HL
HP
HU
I
IA
1C
IU
J
JR
JS
JY
K
KF
KH
KL
KM
KX
L
LA
LF
LM
LT
=
0 3
13.0
7.0
8.0
7.0
8.0
7.0
8.0
9.0
7.0
9.0
1.0
13.0
9.0
8.0
7.0
8.0
7.0
7.0
8.0
10.0
12.0
7.0
8.0
9.0
7.0
7.0
s
8.0
9.0
7.0
7.0
9.0
9.0
8.0
6.0
7.0
7.0
10.0
9.0
9.0
8.0
Res. 2 Res. 3
9.0
5.0
8.0
8.0
9.0
7.0
7.0
9.0
7.0
' f
9.0
1.0
12.0
11.0
7.0
6.0
7.0
6.0
7.0
7.0
11.0
6.0
7.0
10.0
9.0
7.0
9.0
,
6.0
8.0
7.0
8.0
10.0
10.0
8.0
6.0
8.0
8.0
10.0
8.0
8.0
8.0
11.0
9.0
9.0
9.0
8.0
7.0
7.0
8.0
7.0
10.0
1.0
6.0
7.0
8.0
7.0
8.0
11.0
7.0
7.0
8.0
13.0
7.0
8.0
9.0
8.0
10.0
7.0
9.0
7.0
8.0
10.0
10.0
5.0
8.0
7.0
8.0
10.0
9.0
7.0
8.0
No data submitted
Insufficient
data
X 3
Exper.
Sigma
2.00
2.00
0.58
1.00
0.58
0.00
0.58
0.58
0.00
0.58
0.00
3.79
2.00
0.58
0.58
0.58
2.65
0.00
0.58
1.53
3.79
0.00
1.15
0.00
0.58
1.53
1.00
0.58
0.00
0.58
0.58
0.58
1.73
1.15
0.58
0.58
0.00
0.58
1.00
0.00
Rng anal
(R + SR) Average
0.473
0.473
0.118
0.236
0.118
0.000
0.118
0.118
0.000
0.118
0.000
0.827
0.473
0.118
0.118
0.118
0.591
0.000
0.118
0.354
0.827
0.000
0.236
0.000
0.118
0.354
0.236
0.118
0.000
0.118
0.118
0.118
0.354
0.236
0.118
0.118
0.000
0.118
0.236
0.000
11.00
7.00
8.33
8.00
8.33
7.00
7.33
8.67
7.00
'
9.33
1.00
10.33
9.00
7.67
6.67
7.67
8.00
7.00
7.33
9.67
10.33
7.00
8.67
9.00
7.33
8.67
7.00
8.67
7.00
7.67
9.67
9.67
7.00
6.67
7.33
7.67
10.00
8.67
8.00
8.00
TAG SYMBOLS
Determined
to be an
outlier
9-Oct-1992
^1
25/43
Normalized deviation
(grand- avg) (known) Tag
0.99
-0.39
0.07
-0.05
0.07
-0.39
-0.28
0.18
-0.39
0.41
-2.47
0.76
0.30
-0.16
-0.51
-0.16
-0.05
-0.39
-0.28
0.53
0.76
-0.39
0.18
0.30
-0.28
0.18
-0.39
0.18
-0.39
-0.16
0.53
0.53
-0.39
-0.51
-0.28
-0.16
0.64
0.18
-0.05
-0.05
It s Above
& s Below
1.04
-0.35
0.12
0.00
0.12
-0.35
-0.23
0.23
-0.35
0.46
-2.42
0.81
0.35
-0.12
-0.46
-0.12
0.00
-0.35
-0.23
0.58
0.81
-0.35
0.23
0.35
-0.23
0.23
-0.35
0.23
-0.35
-0.12
0.58
0.58
-0.35
'':- :,-.. .x -.:..-
-0.46
-0.23
-0.12
0.69
0.23
0.00
0.00
control limit
control limit
-------
26/43 EMSL-LV Intercomparison Study
: Gamma in Water, 9-Oct-1992
Cesium-134
Lab
M
MA
ME
ML
MN
MP
MQ
MS
MT
MV
MY
N
NI
NJ
NK
NP
NZ
O
OA
OB
OL
OM
00
OT
PB
PC
PE
PP
PQ
PT
PU
PV
PW
PX
PY
Q
QB
QC
QJ
QL
QP
QT
QX
QZ
Res. 1
8.0
8.0
7.0
8.0
10.0
8.0
10.0
8.0
8.0
9.0
8.0
6.0
5.0
85.0
8.0
7.0
7.0
10.0
8.0
7.0
8.0
7.0
7.0
10.0
9.0
7.0
8.0
,
7.0
8.0
9.0
7.0
11.0
9.0
9.0
8.0
Res. 2 Res. 3
9.0
7.0
8.0
7.0
10.0
8.0
9.0
8.0
8.0
7.0
8.0
3.0
4.0
8.0
7.0
8.0
. .
13.0
9.0
8.0
5.0
9.0
7.0
10.0
8.0
8.0
8.0
8.0
10.0
4.0
7.0
10.0
9.0
9.0
7.0
8.0
7.0
7.0
7.0
9.0
8.0
7.0
7.0
9.0
10.0
8.0
5.0
3.0
96.0
8.0
7.0
8.0
11.0
9.0
7.0
8.0
7.0
7.0
10.0
11.0
7.0
8.0
7.0
9.0
9.0
7.0
7.0
8.0
9.0
7.0
a No data submitted
0 s
Tn«uffi"An
tdata
X a
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
0.58
0.58
0.58
0.58
0.58
0.00
1.53
0.58
0.58
1.53
0.00
1.53
1.00
0.00
0.00
0.58
1.53
0.58
0.58
1.73
1.15
0.00
0.00
1.53
0.58
0.00
'
0.58
1.00
2.89
0.00
2.08
0.58
0.00
0.58
0.118
0.118
0.118
0.118
0.118
0.000
0.354
0.118
0.118
,
0:354
0.000
0.354
0.236
0.000
0.000
0.118
0.354
0.118
0.118
0.354
0.236
0.000
0.000
0.354
0.118
0.000
0.118
0.236
0.591
0.000
0.473
0.118
0.000
0.118
8.33
7.33
7.33
7.33
9.67
8.00
8.67
7.67
8.33
8.67
8.00
4.67
4.00
8.00
7.00
7.67
11.33
8.67
7.33
'
7.00
7.67
7.00
10.00
9.33
7.33
8.00
7.33
9.00
7.33
7.00
9.33
8.67
9.00
7.33
TAG SYMBOLS
Determined
to be an
outlier
0.07
-0.28
-0.28
-0.28
0.53
-0.05
0.18
-0.16
0.07
0.18
-0.05
-1.20
-1.43
-0.05
-0.39
-0.16
1.11
0.18
-0.28
-0.39
-0.16
-0.39
0.64
0.41
-0.28
-0.05
-0.28
0.30
-0.28
-0.39
0.41
0.18
0.30
-0.28
ft s Above
JJ s Below
0.12
-0.23
-0.23
»
*
-0.23
0.58
0.00
0.23
-0.12
0.12
»
0.23
0.00
-1.15
-1.39
0
0.00
-0.35
-0.12
«
»
1.15
0.23
-0.23
*
-0.35
-0.12
-0.35
0.69
0.46
-0.23
0.00
*
-0.23
0.35
-0.23
-0.35
0.46
0.23
0.35
-0.23
control limit
control limit
-------
Cesium
Lab
R
RA
RC
RK
RO
RQ
RR
RV
RZ
8
SA
sc
SD
SI
SK
ss
ST
sz
T
TA
TB
TC
TD
TE
*f&' "
TG
Tl
TK ,
TL
TO
TR
TU
U
W
X
Y
Z
EMSL-LV Intercomparison Study: Gamma
134
Res. 1
7.0
9.0
10.0
61.0
7.0
8.0
6.0
9.0
8.0
10.0
7.0
8.0
8.0
8.0
8.0
8.0
9.0
..
11.0
10.0
8.0
8.0
12.0
7.0
7.0
8.0
8.0
8.0
8.0
7.0
Exper.
Res. 2 Res. 3 Sigma
7.0 6.0 0.58
8.0
8.0 0.58
19.0 10.0 5.20
67,0 64.0 0.00
7.0
8.0
*
9.0 1.15
8.0 0.00
31.0 10.0 13.43
9.0 12.0 1.73
- ,
7.0
-
7.0 0.58
8.0 10.0 1.15
6.0
7.0
8.0
9.0
8.0
8.0
6.0 0.58
8.0 0.58
9.0 0.58
8.0 0.58
8.0 0.00
8.0 0.00
10.0 13.0 2.08
12.0 10.0 1.00
,
9.0 10.0 0.58
7.0
'''..',
9.0
11.0
7.0
7.0
8.0
5.0
8.0
8.0
7.0
5.0 1.53
'
9.0 0.58
9.0 1.53
6.0 0.58
7.0 0.00
8.0 0.00
7.0 1.53
7.0 0.58
8.0 0.00
7.0 0.00
Rnganal
(R + SR)
0.118
0.118
1.120
0,709
0.236
0.000
4.721
0.354
0.118
0.236
0.118
0.118
0.118
0.118
0.000
0.000
0.473
0.236
. .
0.118
0.354
0.118
0.354
0.118
0.000
0.000
0.354
0.118
0.000
0.000
in Water,
Average
6.67
8.33
13.00
64,00
7.67
8.00
15.67
10.00
7.33
9.33
6.33
7.67
8.33
8.33
8.00
8.00
10.67
11.00
j-
9.67
6.67
8.67
10.67
6.67
7.00
8.00
6.67
7.67
8.00
7.00
9-Oct-1992
Normalized
(grand-avg)
-0.51
0.07
1.68
16.89
-0.16
-0.05
2.61
0.64
-0.28
0.41
-0.63
-0.16
0.07
0.07
-0.05
-0.05
0.88
0.99
0.53
-0.51
0.18
0.88
-0.51
-0.39
-0.05
-0.51
-0.16
-0.05
-0.39
t
27/43
"
deviation
(known) Tag
-0.46
0.12
1.73
16.93 x
-0.12
0.00
2.66
0.69
-0.23
0.46
-0.58
-0.12
0.12
0.12
0.00
0.00
0.92
-
1.04
0.58
-0.46
*
0.23
0.92
-0.46
-0.35
0.00
-0.46
-0.12
0.00
-0.35
Data sorted by Laboratory Average
Average
1.00
3.33
4.00
Tag Lab
EZ
CC
NP
= No data submitted
0 = Insufficient data
Average
4.00
4.67
6.33
Tag
Lab Average Tag Lab
BN
NK
SI
TAG SYMBOLS
x 3 Determined to be an outlier
6.67
6.67
6.67
W
TR
TI
ft s Above control limit
11 = Below control limit
-------
28/43 EMSL-LV
Cesium-134
Intel-comparison Study: Gamma in Water, 9-Oct-1992
1
Data sorted by Laboratory Average
Average Tag
6.67
6.67
6.67
6.67
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.00
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.33
7.67
7.67
7.67
7.67
7.67
7.67
s No data submitted
0 s Insufficient data
Lab
R
KH
FU
AF
Z
TU
QL
PT
PP
OA
K
J
1C
HK
GI
EN
KB
DT
DD
D
BM
AJ
SC
QZ
QJ
Q
PW
PC
MP
ME
MA
KL
HU
GL
EH
BO
BA
AI
X
ss
RO
PQ
OB
MV
Average Tag
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.67
8.67
TAG SYMBOLS
x = Determined to be an
Lab
KM
JR
FZ
FL
DH
DG
DE
BL
BC
BB
AY
A
Y
U
TA
T
RQ
PX
O
NJ
MS
LT
LF
GE
E
DM
DL
CP
CK
CE
BK
BH
AU
AK
SZ
ST
RA
MY
M
EA
DZ
AP
TL
QT
Average Tag
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.33
9.33
9.33
9.33
9.33
9.33
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
10.00
10.00
10.00
10.33
10.33
10.33
10.67
10.67
11.00
11.00
It s Above control
outlier U s Below control
Lab
PB
NI
MT
L
IU
I
HL
EL
CJ
QX
QB
HP
FJ
CX
CS
CO
C
AE
SD
QP
PV
EX
BI
AL
TG
MQ
JY
JS
HI
DO
CQ
CA
AW
AN
RZ
PU
KX
HJ
FE
AZ
TO
TB
TE
DR
limit
limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
29/43
Cesium-134 '
Average
Tag
Data sorted by Laboratory Average
Lab | Average Tag Lab [Average
Tag_
Lab
11.33
OT
13.00
13.00
RC
BW
15.67
54.00
RV
RK
Frequency distribution of responding labs(expected prec. vs known value)
20-
10-
6
-* exp. prec. -2
+2 exp. prec.
value
Frequency distribution of responding labs(std. dev. vs mean value)
20
10
-6
4 std. dev. -2
mean
value
+2 std. dev.
= No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft = Above control limit
IL = Below control limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
30/43
Cesium-137 Statistical Summary 174 Participants
The known value of this nuclide is 8.0 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 16.7; the warning regions are 0.0 to 2.2 and 13.8 to 16.7
29(16.7 %) Failed to respond ..
2(1.1 %) Outliers'
Statistic
141(81.0 %) Within all limits
Respondents
2(1.1 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
9.17
4.87
23.71
53.12
14.60
0.24
8.67
8.33
0.14
Grand Avg 8.73
1.70
2.90
19.50
9.12
0.43
8.67
8.33
0.39
2(1.4 %) More than 3 norm. S.D.
2(1.4 %) Between 2 and 3 norm. S.D
. 128(88.3 %) Within 1 norm. S.D.
of known value
13(9.O %) Between 1 and 2 norm. S.D.
-------
31 /
43 EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
Cesium-137
Lab Res. 1
A
AE
AF
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BO
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CC
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DL
DM
DO
10.0
9.0
8.0
8.0
9.0
8.0
12.0
11.0
7.0
8.0
10.0
8.0
8.0
6.0
9.0
11.0
8.0
9.0
9.0
9.0
9.0
5.0
8.0
1&0
7.0
10.0
4.0
8.0
9.0
10.0
8.0
8.0
11.0
10.0
10.0
9.0
8.0
8.0
9.0
7.0
8.0
9.0
10.0
Res. 2
9.0
8.0
7.0
8.0
9.0
9.0
3.0
11.0
9.0
14.0
9.0
9.0
7.0
7.0
8.0
8.0
9.0
7.0
9.0
9.0
8.0
4.0
8.0
ma
8.0
10.0
4.0
8.0
8.0
10.0
12.0
10.0
8.0
12.0
10.0
8.0
9.0
8.0
9.0
7.0
7.0
9.0
9.0
Res. 3
10.0
10.0
6.0
7.0
8.0
9.0
4.0
11.0
11.0
8.0
10.0
7.0
8.0
5.0
8.0
8.0
9.0
9.0
7.0
9.0
7.0
5.0
8.0
20:0
7.0
9.0
4.0
8.0
9.0
9.0
10.0
8.0
11.0
10.0
10.0
9.0
8.0
8.0
9.0
7.0
6.0
9.0
13.0
& No data submitted
0 a
Insufficient
data
X S
Exper.
Sigma
0.58
1.00
1.00
0.58
0.58
0.58
4.93
0.00
2.00
3.46
0.58
1.00
0.58
1.00
0.58
1.73
0.58
1.15
1.15
0.00
1.00
0.58
0.00
2.00
0.58
0.58
0.00
0.00
0.58
0.58
2.00
1.15
1.73
1.15
0.00
0.58
0.58
0.00
0.00
0.00
1.00
0.00
2.08
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.118
0.236
0.236
0.118
0.118
0.118
1.120
0.000
0.473
0.709
0.118
0.236
0.118
0.236
0.118
0.354
0.118
0.236
0.236
0.000
0.236
0.118
0.000
0.473
0.118
0.118
0.000
0.000
0.118
0.118
0.473
0.236
0.354
0.236
0.000
0.118
0.118
0.000
0.000
0.000
0.236
0.000
0.473
9.67
9.00
7.00
7.67
8.67
8.67
6.33
11.00
9.00
10.00
9.67
8.00
7.67
6.00
8.33
9.00
8.67
8.33
8.33
9.00
8.00
4.67
8.00
18.00
7.33
9.67
4.00
8.00
8.67
9.67
10.00
8.67
10.00
10.67
10.00
8.67
8.33
8.00
9.00
7.00
7.00
9.00
10.67
TAG SYMBOLS
Determined
to be an
outlier
0.32
0.09
-0.60
-0.37
-0.02
-0.02
-0.83
0.79
0.09
0.44
0.32
-0.25
-0.37
-0.95
-0.14
0.09
-0.02
-0.14
-0.14
0.09
-0.25
-1.41
-0.25
3*2*
-0.48
0.32
-1.64
-0.25
-0.02
0.32
0.44
-0.02
0.44
0.67
0.44
-0.02
-0.14
-0.25
0.09
-0.60
-0.60
0.09
0.67
ft s Above
U = Below
0.58
0.35
-0.35
-0.12
0.23
0.23
-0.58
1.04
0.35
0.69
0.58
0.00
-0.12
-0.69
0.12
0.35
0.23
0.12
0.12
0.35
0.00
-1.15
0.00
3.46 x
-0.23
0.58
-1.39
0.00
0.23
0.58
0.69
0.23
0.69
0.92
0.69
0.23
0.12
0.00
0.35
-0.35
-0.35
0.35
0.92
control limit
control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, 9-Oct-1992
32/43
Cesium-137
Lab
DR
DT
DZ
E
EA
EB
EH
EL
EN
EW
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
ffl
HJ
HK
HL
HP
HU
I
IA
1C
IU
J
JK
JS
JY
K
KF
KH
KL
KM
KX
L
LA
LF
LM
LT
=
0 s
Res. 1
10.0
5.0
11.0
8.0
7.0
8.0
9.0
8.0
9.0
9.0
1.0
8.0
7.0
10.0
7.0
10.0
6.0
7.0
10.0
7.0
7.0
8.0
11.0
11.0
8.0
12.0
f f
7.0
9.0
8.0
9.0
10.0
10.0
9.0
10.0
10.0
8.0
11.0
8.0
8.0
9.0
Res. 2 Res. 3
10.0
7.0
13.0
8.0
8.0
8.0
8.0
9.0
9.0
10.0
1.0
13.0
9.0
9.0
7.0
8.0
7.0
8.0
8.0
6.0
10.0
8.0
11.0
11.0
8.0
6.0
'' , '""', '";*
9.0
10.0
8.0
9.0
13.0
12.0
9.0
-
8.0
8.0
9.0
9.0
9.0
8.0
9.0
9.0
6.0
12.0
8.0
8.0
8.0
8.0
7.0
10.0
10.0
1.0
10.0
8.0
9.0
8.0
10.0
8.0
8.0
9.0
10.0
10.0
8.0
10.0
11.0
9.0
9.0
r
8.0
8.0
8.0
10.0
13.0
10.0
10.0
9.0
8.0
7.0
11.0
8.0
8.0
9.0
No data submitted
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
0.58
1.00
1.00
0.00
0.58
0.00
0.58
1.00
0.58
"
0.58
0.00
2.52
1.00
0.58
0.58
1.15
1.00
0.58
1.00
2.08
1.73
0.00
0.58
0.00
0.58
3.00
- '
1.00
1.00
0.00
0.58
1.73
1.15
0.58
1.00
1.15
1.00
1.15
0.58
0.00
0.00
0.118
0.236
0.236
0.000
0.118
0.000
0.118
0.236
0.118
0.118
0.000
0.591
0.236
0.118
0.118
0.236
0.236
0.118
0.236
0.473
0.354
0.000
0.118
0.000
0.118
0.709
0.236
0.236
0.000
0.118
0.354
0.236
0.118
0.236
0.236
0.236
0.236
0.118
0.000
0.000
9.67
6.00
12.00
8.00
7.67
8.00
8.33
8.00
9.33
9.67
1.00
10.33
8.00
9.33
7.33
9.33
7.00
7.67
9.00
7.67
9.00
8.00
10.67
11.00
8.33
9.00
8.00
9.00
8.00
9.33
12.00
10.67
9.33
9.00
8.67
8.00
10.33
8.33
8.00
9.00
TAG SYMBOLS
Determined to
be an
outlier
0.32
-0.95
1.13
-0.25
-0.37
-0.25
-0.14
-0.25
0.21
0.32
-2.68
0.56
-0.25
0.21
-0.48
0.21
-0.60
-0.37
0.09
-0.37
0.09
-0.25
0.67
0.79
-0.14
0.09
-0.25
0.09
-0.25
0.21
1.13
0.67
0.21
0.09
-0.02
-0.25
0.56
-0.14
-0.25
0.09
ft s Above
& s Below
0.58
-0.69
1.39
0.00
-0.12
0.00
0.12
0.00
0.46
0.58
-2.42
0.81
0.00
0.46
-0.23
0.46
-0.35
-0.12
0.35
-0.12
0.35
0.00
0.92
1.04
0.12
0.35
0.00
0.35
0.00
0.46
1.39
0.92
0.46
0.35
0.23
0.00
0.81
0.12
0.00
0.35
control limit
control limit
-------
33 /
43 EMSL-LV Intercomparison Study : Gamma in Water,
9-Oct-1992
Cesium-137
Lab
M
MA
ME
ML
MN
MP
MQ
MS
MT
MV
MY
N
NI
NJ
NK
NP
NZ
O
OA
OB
01*
OM
OO
OT
PB
PC
PE
PP
#<*
PT
PU
PV
PW
PX
PY
Q
QB
QC
QJ
QL
QP
QT
QX
QZ
=
0 s
Res. 1
10.0
9.0
8.0
8.0
13.0
9.0
8.0
10.0
9.0
9.0
11.0
8.0
9.0
i&0
8.0
8.0
8.0
11.0
8.0
8.0
11.0
f
9.0
14.0
6.0
8.0
8.0
8.0
12.0
9.0
7.0
9.0
9.0
11.0
7.0
Res. 2
9.0
10.0
9.0
f
9.0
10.0
10.0
7.0
13.0
9.0
8.0
10.0
5.0
7.0
IZ&
9.0
8.0
8.0
_
15.0
10.0
7.0
'
8.0
f
9.0
13.0
6.0
9.0
8.0
8.0
8.0
6.0
8.0
9.0
8.0
11.0
8.0
Res. 3
9.0
10.0
9.0
8.0
12.0
10.0
7.0
11.0
9.0
7.0
11.0
10.0
9.0
8.0
8.0
9.0
14.0
9.0
6.0
'
7.0
'
8.0
14.0
11.0
9.0
8.0
8.0
8.0
10.0
8.0
7.0
12.0
11.0
8.0
No data submitted
Insufficient
data
X 3
Exper.
Sigma
0.58
0.58
0.58
0.58
1.53
0.58
0.58
1.53
0.00
1.00
0.58
2.52
1.15
0.58
0.00
0.58
.
2.08
1.00
1.00
2.08
'
0.58
0.58
2.89
0.58
0.00
0.00
2.31
2.08
0.58
1.15
2.08
0.00
0.58
Rng anal
(R + SR)
0.118
0.118
0.118
,
0.118
0.354
0.118
0.118
0.354
0.000
4-
0.236
0.118
0.591
0.236
0.118
0.000
0.118
0.473
0.236
0.236
0.473
0.118
0.118
0.591
0.118
0.000
0.000
0.473
0.473
0.118
0.236
0.473
0.000
0.118
Average
9.33
9.67
8.67
,
8.33
11.67
9.67
7.33
11.33
9.00
8.00
10.67
7.67
8.33
8.33
8.00
8.33
13.33
9.00
7.00
8.67
8.67
13.67
7.67
8.67
8.00
8.00
9.33
-
8.33
7.67
8.33
9.67
11.00
7.67
TAG SYMBOLS
Determined
to be an outlier
Normalized
(grand-avg)
021
0.32
-0.02
-
-0.14
1.02
0.32
-0.48
0.90
0.09
-0.25
0.67
-0.37
-0.14
-0.14
-0.25
-0.14
.
1.59
0.09
-0.60
-0.02
-0.02
1.71
-0.37
-0.02
-0.25
-0.25
0.21
-0.14
-0.37
-0.14
0.32
0.79
-0.37
deviation
(known) Tag
0.46
0.58
0.23
*
*
0.12
1.27
0.58
-0.23
1.15
0.35
»
0.00
0.92
-0.12
0.12
0
0.12
0.00
0.12
*
*
»
1.85
0.35
-0.35
«
0.23
*
0.23
1.96
-0.12
0.23
0.00
*
0.00
0.46
::-.
0.12
-0.12
0.12
0.58
1.04
-0.12
ft = Above control limit
Jl s Below control limit
-------
EMSL-LV Intel-comparison Study: Gamma
Cesium-137
Lab Res. 1
R 8.0
RA 9.0
RC 14.0
KK $0.0
RO 10.0
RQ 10.0
ER
RU
RV 4.0
RZ 7.0
8
SA
SC 8.0
SD 9.0
SI 14.0
8K
SS 9.0
ST 9.0
SZ 7.0
T 8.0
TA 9.0
TB 9.0
TC
TE 7.0
TJF
TG 12.0
H 6.0
TK
TL 8.0
TO 16.0
TR 7.0
TU 7.0
U 7.0
W 5.0
X 9.0
Y 7.0
Z 8.0
Average
1.00
4.00
4.67
Res. 2
8.0
8.0
8.0
60,0
10.0
10.0
'
'
9.0
7.0
' ' f
8.0
11.0
10.0
9.0
8.0
8.0
9.0
8.0
9.0
-
11.0
14.0
9.0
..
5.0
15.0
11.0
8.0
9.0
5.0
9.0
8.0
8.0
Tag
Res. 3
9.0
10.0
13.0
63,0
11.0
10.0
f ,
*
7.0
9.0
t
7.0
10.0
8.0
6.0
9.0
7.0
7.0
8.0
10.0
'
8.0
14.0
8.0
' '', ''
9.0
14.0
9.0
7.0
5.0
6.0
8.0
8.0
10.0
Data
Exper.
Sigma
0.58
1.00
3.21
3,00
0.58
0.00
*
2.52
1.15
,
0.58
1.00
3.06
1.73
0.58
0.58
1.00
0.58
0.58
2.08
-
1.15
1.53
,
2.08
1.00
2.00
0.58
2.00
0.58
0.58
0.58
1.15
Rng anal
(R + SR)
0.118
0.236
0.709
0,700
0.118
0.000
0.591
0.236
"
0.118
0.236
0.709
0.354
0.118
0.118
0.236
0.118
0.118
0.473
0.236
0.354
0.473
0.236
0.473
0.118
0.473
0.118
0.118
0.118
0.236
in Water,
Average
8.33
9.00
11.67
63.00
10.33
10.00
'
6.67
7.67
f
7.67
10.00
10.67
'
8.00
8.67
7.33
8.00
8.33
9.33
8.67
13.33
7.67
7.33
15.00
9.00
7.33
7.00
5.33
8.67
7.67
8.67
9-Oct-1992
Normalized
(grand-avg)
-0.14
0.09
1.02
18.80
0.56
0.44
-0.71
-0.37
-0.37
0.44
0.67
-0.25
-0.02
-0.48
-0.25
-0.14
0.21
-0.02
1.59
-0.37
'
-0.48
2.17
0.09
-0.48
-0.60
-1.18
-0.02
-0.37
-0.02
34/43
"*
deviation
(known) Tag
0.12
0.35
1.27
19.06 x
0.81
0.69
-0.46
-0.12
-0.12
0.69
0.92
0.00
0.23
-0.23
0.00
0.12
0.46
*
0.23
«
1.85
-0.12
»
-0.23
2.42
0.35
-0.23
-0.35
-0.92
0.23
-0.12
0.23
sorted by Laboratory Average
Lab Average
EZ
CC
BN
s No data submitted
0 = Insufficient data
X
5.33
6.00
6.00
Tag
Lab Average Tag Lab
W
DT
BA
TAG SYMBOLS
s Determined to be an outlier
6.33
6.67
7.00
AL
RV
U
It = Above control limit
li = Below control limit
-------
35/43
Cesium-137
] .
1
Data sorted by Laboratory Average
Average ~ - -
7.00
7.00
7.00
7.00
7.00
7.33
7.33
7.33
7.33
7.33
7.33
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
7.67
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
s No data
Tag Lab
PC
GE
DL
DH
AT
TU
TL
SZ
MT
FU
C
Y
TI
sc
RZ
QZ
QL
PV
NK
HI
GI
EA
AZ
AI
T
88
Q
PX
OA
NI
LF
KM
J
1C
HK
FJ
EL
EB
E
DE
CE
BO
BM
AY
Average Tag
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.33
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
8.67
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
submitted TAG SYMBOLS
0 = Insufficient data x s Determined to be an
Lab
TA
R
QP
QJ
OB
O
NP
MP
L
HU
EH
DD
BK
BI
BB
Z
X
TE
ST
PW
PT
PP
ME
KL
D
CP
CJ
BH
AK
AJ
TR
RA
PB
MY
LT
KH
IU
I
HJ
GL
DM
DG
BL
BC
Average Tag
9.00
9.00
9.33
9.33
9.33
9.33
9.33
9.33
9.33
9.33
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
9.67
10.00
10.00
10.00
10.00
10.00
10.00
10.33
10.33
10.33
10.67
10.67
10.67
10.67
10.67
10.67
11.00
11.00
11.00
11.33
11.67
11.67
12.00
12.00
13.33
13.33
ft & Above control
outlier !! s Below control
T,ab
AP
AE
TB
QB
M
K
JR
FZ
FL
EN
QT
MS
MA
EX
DR
CK
CA
AW
A
SD
RQ
CX
CQ
CO
AU
RO
KX
FE
SI
NJ
JY
HL
DO
CS
QX
HP
AN
MV
RC
MQ
JS
DZ
TG
OT
limit
limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, 9-Oct-1992
36/43
Cesium-137
Average
Tag
Data sorted by Laboratory Average
Lab | Average Tag Lab | Average
Tag
Lab
13.67
PU
15.00
TO
18.00
63.00
x
x
BW
RK
%
20-
Frequency distribution of responding labs(expected prec. vs known value)
10-
OJr
exp. prec.
known
value
+2 exp. prec.
Frequency distribution of responding labs(std. dev. vs mean value)
20
10
std. dev. -2
mean
value
std. dev.
s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1T s Above control limit
Ji s Below control limit JJ
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oci>1992
37/43
Barium-133 Statistical Summary 174 Participants
The known value of this nuclide is 74.0 pCi/1 with an expected precision of 7.0; the control limits
are 61.9 to 86.1; the warning regions are 61.9 to 65.9 and 82.1 to 86.1
3O(17.2 %) Failed to respond «,
6(3.4 %) Outliers '
6(3.4 %) Out of control
but not an outlier
Statistic
. 121 (69.5 %) Within all limits
Respondents
11(6.3 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
74.48
38.39
1473.62
51.54
0.65
0.01
73.00
-1.35
-0.03
Grand Avg 73.05
5.18
26.85
7.09
-1.29
-0.18
73.00
-1.35
-0.19
12(8.3 %) More than 3 norm. S.D. -,%
11 (7.6 %) Between 2 and 3 norm. S.D.
,87(60.4%) Within 1 norm. S.D.
of known value
34(23.6 %) Between 1 and 2 norm. S.D.
-------
38 /
43 EMSL-LV Intel-comparison Study: Gamma
in Water,
9-Oct-1992
Barium-133
Lab
A
AE
AF
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
Bl*
BO
BW
C
CA
C
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
BJ
DL
DM
DO
=
0 3
Res. 1
82.0
65.0
66.0
71.0
63.0
74.0
79.0
90.0
71.0
73.0
73.0
73.0
75.0
76.0
67.0
67.0
72.0
71.0
74.0
74.0
76.0
3?&
70.0
73.0
85.0
m&
82.0
86.0
65.0
78.0
76.0
72.0
77.0
72.0
74.0
71.0
65.0
62.0
70.0
76.0
70.0
64.0
Res. 2
80.0
67.0
70.0
72.0
63.0
74.0
73.0
89.0
67.0
75.0
73.0
72.0
73.0
74.0
67.0
66.0
70.0
74.0
74.0
71.0
79.0
36.0
74.0
74.0
80.0
' <&&
82.0
68.0
68.0
68.0
76.0
74.0
78.0
73.0
73.0
71.0
65.0
65.0
72.0
74.0
73.0
56.0
Res. 3
83.0
67.0
73.0
73.0
54.0
74.0
81.0
89.0
70.0
73.0
77.0
76.0
86.0
73.0
67.0
69.0
69.0
78.0
73.0
73.0
76.0
36.0
68.0
<
72.0
76.0
&&>
83.0
73.0
70.0
70.0
77.0
76.0
80.0
72.0
74.0
70.0
65.0
64.0
^71.0
73.0
71.0
73.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
1.53
1.15
3.51
1.00
5.20
0.00
4.16
0.58
2.08
1.15
2.31
2.08
7.00
1.53
0.00
1.53
1.53
3.51
0.58
1.53
1.73
0.58
3.06
-
1.00
4.51
0.00
0.58
9.29
2.52
5.29
0.58
2.00
1.53
0.58
0.58
0.58
0.00
1.53
1.00
1.53
1.53
8.50
Rng anal
(R -i- SR)
0.253
0.169
0.591
0.169
0.759
0.000
0.675
0.084
0.338
0.169
0.338
0.338
1.185
0.253
0.000
0.253
0.253
0.591
0.084
0.253
0.253
0.084
0.506
"
0.169
0.759
vim
0.084
1.988
0.422
0.844
0.084
0.338
0.253
0.084
0.084
0.084
0.000
0.253
0.169
0.253
0.253
1.828
Normalized deviation
Average
81.67
66.33
69.67
72.00
60.00
74.00
77.67
89.33
69.33
73.67
74.33
73.67
78.00
74.33
67.00
67.33
70.33
74.33
73.67
72.67
77.00
36.33
70.67
73.00
80.33
mm
82.33
75.67
67.67
72.00
76.33
74.00
78.33
72.33
73.67
70.67
65.00
63.67
71.00
74.33
71.33
64.33
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
2.13
-1.66
-0.84
-0.26
-3.23
0.24
1.14
4.03
-0.92
0.15
0.32
0.15
1.23
0.32
-1.50
-1.41
-0.67
0.32
0.15
-0.09
0.98
-9.08
-0.59
-0.01
1.80
~WM
2.30
0.65
-1.33
-0.26
0.81
0.24
1.31
-0.18
0.15
-0.59
-1.99
-2.32
-0.51
0.32
-0.42
-2.16
ft s Above
JJ s Below
1.90
-1.90
-1.07
-0.49
-3.46
0.00
0.91
3.79
-1.15
-0.08
0.08
-0.08
0.99
0.08
-1.73
-1.65
*
-0.91
0.08
-0.08
-0.33
0.74
-&32 x
-0.82
*
-0.25
1.57
10.39 X
2.06
0.41
-1.57
-0.49
0.58
0.00
1.07
-0.41
-0.08
-0.82
-2.23
-2.56
-0.74
«
0.08
-0.66
-2.39
control limit
control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, 9-Oct-1992
Barium-133
Lab Res. 1
DR
DT
DZ
E
EA
EB
EH
EL
EN
nw
EX
FE
FJ
FL
FU
FZ
GE
GI
GL
HI
HJ
HK
HL
HP
HU
I
1A
1C
IU
J
JR
JS
JY
K
KF
KH
KL
KM
KX
L
LA
LF
LM
LT
'
78.0
88.0
73.0
73.0
70.0
76.0
73.0
79.0
69.0
1*0
79.0
69.0
76.0
70.0
75.0
73.0
67.0
77.0
72.0
71.0
68.0
71.0
82.0
63.0
70.0
s
74.0
74.0
75.0
68.0
73.0
71.0
70.0
81.0
79.0
69.0
74.0
76.0
74.0
70.0
Res. 2
",
74.0
77.0
69.0
73.0
68.0
71.0
78.0
74.0
73.0
- 10 "
65.0
70.0
82.0
71.0
75.0
74.0
73.0
76.0
76.0
70.0
71.0
74.0
83.0
64.0
72.0
' '
72.0
73.0
74.0
68.0
76.0
71.0
72.0
79.0
75.0
67.0
70.0
69.0
77.0
70.0
Res. 3
' '
79.0
81.0
73.0
75.0
68.0
78.0
71.0
79.0
75.0
1,0
77.0
72.0
80.0
72.0
72.0
76.0
69.0
75.0
69.0
73.0
71.0
69.0
82.0
65.0
74.0
'
73.0
70.0
74.0
68.0
81.0
67.0
65.0
79.0
78.0
68.0
74.0
71.0
77.0
70.0
s No data submitted
0 B
Insufficient
data
X S
39/43
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
2.65
5.57
2.31
1.15
1.15
3.61
3.61
2.89
,
3.06
7.57 '
1.53
3.06
1.00
1.73
1.53
3.06
1.00
3.51
1.53
1.73
2.52
0.58
1.00
2.00
-
1.00
2.08
0.58
0.00
4.04
2.31
3.61
1.15
2.08
1.00
2.31
3.61
1.73
0.00
-
0.422
0.928
0.338
0.169
0.169
0.591
0.591
0.422
0.506
1.345
0.253
0.506
0.169
0.253
0.253
0.506
0.169
0.591
0.253
0.253
0.422
0.084
0.169
0.338
0.169
0.338
0.084
0.000
0.675
0.338
0.591
0.169
0.338
0.169
0.338
0.591
0.253
0.000
"- *
77.00
82.00
71.67
73.67
68.67
75.00
74.00
77.33
72.33
too
73.67
70.33
79.33
71.00
74.00
74.33
69.67
76.00
72.33
71.33
70.00
71.33
82.33
64.00
72.00
73.00
72.33
74.33
68.00
76.67
69.67
69.00
79.67
77.33
68.00
72.67
72.00
76.00
70.00
TAG SYMBOLS
Determined
to be an
outlier
' '',' ' - -
0.98
2.22
-0.34
0.15
-1.08
0.48
0.24
1.06
-0.18
-J7.83
0.15
-0.67
1.56
-0.51
0.24
0.32
-0.84
0.73
-0.18
-0.42
-0.75
-0.42
2.30
-2.24
-0.26
-0.01
-0.18
0.32
-1.25
0.90
-0.84
-1.00
1.64
1.06
-1.25
-0.09
-0.26
0.73
-0.75
IT s Above
II = Below
*
0.74
1.98
-0.58
-0.08
-1.32
0.25
0.00
0.82
*
-0.41
18.06 x
-0.08
-0.91
1.32
-0.74
0.00
0.08
-1.07
0.49
-0.41
-0.66
-0.99
-0.66
2.06
-2.47
-0.49
-0.25
-0.41
0.08
-1.48
0.66
-1.07
-1.24
1.40
0.82
-1.48
-0.33
-0.49
0.49
*
-0.99
control limit
control limit
-------
40 /
43 EMSL-LV Intercomparison Study: Gamma in Water,
9-Oct-1992
Barium- 133
Lab
M
MA
ME
ML
MN
MP
MQ
MS
MT
MV
MY
K
NI
NJ
NK
HP
NZ
O
OA
OB
OL
OM
OO
OT
PB
PC
PI
PP
PQ
PT
Ft?
PV
PW
PX
FY
Q
QB
QJ
QL
QP
QT
QX
QZ
Res. 1
85.0
74.0
72.0
69.0
74.0
72.0
71.0
74.0
67.0
79.0
79.0
71.0
64.0
59.0
72.0
72.0
8.0
76.0
75.0
72.0
69.0
78.0
79.0
'
68.0
71.0
72.0
65.0
79.0
76.0
74.0
71.0
74.0
86.0
65.0
Res. 2
82.0
74.0
72.0
67.0
81.0
78.0
76.0
70.0
65.0
65.0
76.0
67.0
78.0
65.0
74.0
74.0
7,0
f
76.0
75.0
74.0
'
72.0
75.0
75.0
64.0
80.0
74.0
66.0
82.0
70.0
78.0
67.0
82.0
88.0
77.0
Res. 3
87.0
74.0
72.0
67.0
74.0
71.0
82.0
74.0
67.0
*
77.0
72.0
72.0
80.0
54.0
74.0
73.0
*»&
,
f
80.0
75.0
80.0
, , ,*/
73.0
75.0
66.0
'' '
65.0
68.0
72.0
,
64.0
74.0
77.0
81.0
70.0
78.0
87.0
71.0
s No data submitted
0 =
Insufficient
data
X 3
Exper.
Sigma
2.52
0.00
0.00
1.15
4.04
3.79
5.51
2.31
1.15
7.57
3.51
2.65
8.72
5.51
1.15
1.00
0.58
2.31
0.00
4.16
2.08
1.73
6.66
" ' '
2.08
6.24
1.15
1.00
4.04
3.79
3.51
2.08
4.00
1.00
6.00
Rnganal
(R + SR) Average
0.422
0.000
0.000
0.169
0.591
0.591
0.928
0.338
0.169
l!345
0.591
0.422
1.667
0.928
0.169
0.169
0.084
0.338
0.000
0.675
0.338
0.253
1.185
0.338
1.024
0.169
0.169
0.675
0.591
0.591
0.338
0.675
0.169
1.024
84.67
74.00
72.00
67.67
76.33
73.67
76.33
72.67
66.33
-
73.67
75.67
70.00
74.00
59.33
73.33
73.00
7JS
77.33
75.00
75.33
71.33
76.00
73.33
- ,
65.67
73.00
72.67
65.00
78.33
74.33
77.67
69.33
78.00
87.00
71.00
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
2.88
0.24
-0.26
-1.33
0.81
0.15
0.81
-0.09
-1.66
0.15
0.65
-0.75
0.24
-3.39
0.07
-0.01
-16,20
1.06
0.48
0.57
-0.42
0.73
0.07
-1.83
-0.01
-0.09
-1.99
1.31
0.32
1.14
-0.92
1.23
3.45
-0.51
It Above
11 = Below
2.64
0.00
-0.49
*
-1.57
0.58
-0.08
0.58
-0.33
-1.90
»
-0.08
0.41
-0.99
0.00
-3.63 U
-0.16
-0.25
16.50 x
«
*
»
0.82
0.25
0.33
*
-0.66
0.49
-0.16
*
-2.06
-0.25
-0.33
*
-2.23
1.07
0.08
0.91
-1.15
0.99
3.22 ft
-0.74
control limit
control limit
-------
EMSL-LV Intercomparison Study: Gamma in Water, 9-Oct-1992 41 / 43
Barium- 133
Lab Res. 1 Res. 2
R 70.0 73.0
RA 84.0 86.0
RC 72.0 71.0
RK 490.0 533.0
RO 79.0 78.0
RQ 82.0 82.0
EH
Rtf
RV 61.0 59.0
RZ 81.0 81.0
8
SA
SC 68.0 68.0
SD 57.0 68.0
SI 75.0 74.0
SK
SS 72.0 75.0
ST $4.0 04.0
SZ 78.0 81.0
T 80.0 78.0
TA 77.0 72.0
TB 77.0 77.0
TC "
TE 67.0 68.0
TF
TG 73.0 68.0
TI 72.0 76.0
TK ' - "*'-*
TL 61.0 61.0
TO 86.0 85.0
TR 65.0 67.0
TU 67.0 66.0
T35 "''- ' '
U 69.0 70.0
W 67.0 74.0
X 72.0 70.0
Y 74.0 77.0
Z 69.0 71.0
Average Tag
1.00 x
7.33 x
32.00 x
= No data submitted
0 = Insufficient data
Exper. Rng anal
Res. 3 Sigma (R + SR)
70.0 1.73 0.253
81.0 2.52 0.422
68.0 2.08 0.338
514.0 13.00 0,203
78.0 0.58 0.084
82.0 0.00 0.000
"
63.0 2.00 0.338
84.0 1.73 0.253
'
f .... .- .. / < ....
68.0 0.00* 0.000
79.0 11.00 2.631
66.0 4.93 0.759
';
74.0 1.53 0.253
54.0 0.00 0.000
76.0 2.52 0.422
70.0 5.29 0.844
81.0 4.51 0.759
79.0 1.15 0.169
64.0 2.08 0.338
'
68.0 2.89 0.422
72.0 2.31 0.338
'",*''',''/','' f
63.0 1.15 0.169
84.0 1.00 0.169
68.0 1.53 0.253
67.0 0.58 0.084
','
72.0 1.53 0.253
68.0 3.79 0.591
74.0 2.00 0.338
69.0 4.04 0.675
68.0 1.53 0.253
Data sorted by Laboratory
Lab Average Tag
EZ 36.33 x
OB 54.00 x
CC 59.33 U
TAG SYMBOLS
Normalized deviation
Average (grand-avg) (known) Tag
71.00 -0.51 -0.74
83.67 2.63 2.39
70.33 -0.67 -0.91
&I4.00 10S;11 108.87 x
78.33 1.31 1.07
82.00 2.22 1.98
61.00 -2.98 -3.22 U
82.00 2.22 1.98
68.00 -1.25 -1.48
68.00 -1.25 -1.48
71.67 -0.34 -0.58
73.67 0.15 -0.08
54.00 -4.71 -4.95 x
78.33 1.31 1.07
76.00 0.73 0.49
76.67 0.90 0.66
77.67 1.14 0.91
'
66.33 -1.66 -1.90
"9,
69.67 -0.84 -1.07
73.33 0.07 -0.16
61.67 -2.82 -3.05 Jl
85.00 2.96 2.72
66.67 -1.58 -1.81
66.67 -1.58 -1.81
70.33 -0.67 -0.91
69.67 -0.84 -1.07
. 72.00 -0.26 -0.49
73.33 0.07 -0.16
69.33 -0.92 -1.15
Average
Lab Average Tag Lab
BN 60.00 U AJ
ST 61.00 U RV
NZ 61.67 li TL
IT = Above control limit
o
x s Determined to be an outlier U s Below control limit
-------
42/43 EMSL-LV Intel-comparison Study : Gamma
Barium-133
in Water, 9-Oct-1992
1
Data sorted by Laboratory Average
Average Tag
63.67
64.00
64.33
65.00
65.00
65.67
66.33
66.33
66.33
66.67
66.67
67.00
67.33
67.67
67.67
68.00
68.00
68.00
68.00
68.67
69.00
69.33
69.33
69.33
69.67
69.67
69.67
69.67
69.67
70.00
70.00
70.00
70.33
70.33
70.33
70.33
70.67
70.67
71.00
71.00
71.00
71.00
71.33
71.33
s No data submitted
0 = Insufficient data
Lab
DG
HU
DO
Q
DE
PV
TE
MY
AE
TU
TR
BB
BC
MP
CK
SD
SC
KM
JR
EB
K
Z
QP
AP
W
TG
JY
GI
AF
NK
LT
HK
U
RC
FJ
BH
DD
BO
R
QZ
FU
DH
PP
HL
Average Tag
71.33
71.33
71.67
71.67
72.00
72.00
72.00
72.00
72.00
72.00
72.33
72.33
72.33
72.33
72.67
72.67
72.67
72.67
73.00
73.00
73.00
73.00
73.33
73.33
73.33
73.33
73.67
73.67
73.67
73.67
73.67
73.67
73.67
73.67
73.67
74.00
74.00
74.00
74.00
74.00
74.00
74.33
74.33
74.33
TAG SYMBOLS
Lab
HJ
DM
SI
E
X
ME
L
I
CO
AI
IU
m
EX
CX
PX
MV
KX
BL
PW
OA
1C
C
Y
TI
PT
O
ss
NI
MS
FE
EA
D
BK
AY
AU
NP
MA
FZ
EL
CQ
AK
QJ
J
GE
Average Tag
74.33
74.33
74.33
74.33
75.00
75.00
75.33
75.67
75.67
76.00
76.00
76.00
76.00
76.33
76.33
76.33
76.67
76.67
77.00
77.00
77.33
77.33
77.33
77.67
77.67
77.67
78.00
78.00
78.33
78.33
78.33
78.33
79.33
79.67
80.33
81.67
82.00
82.00
82.00
82.33
82.33
83.67
84.67
85!00
ft = Above control
x s Determined to be an outlier JJ- s Below control
Lab
DL
BI
BA
AW
PB
EH
PC
NJ
CJ
T
PQ
LF
GL
MT
MQ
CP
TA
JS
DT
BM
OT
KL
EN
TB
QL
AL
QT
AZ
SZ
RO
QB
CS
FL
KH
CA
A
RZ
RQ
DZ
HP
CE
RA
M
TO
limit
limit
-------
EMSL-LV Intel-comparison Study: Gamma in Water, 9-Oct-1992
43/43
Barium-133
Average
Tag
Data sorted by Laboratory Average
Lab | Average Tag Lab | Average
Tag
Lab
87.00
ft
QX
89.33
AN
514.00
RK
Frequency distribution of responding labs(expected prec. vs known value)
10-
jll.
_11T TB.ii|llllt..lil
exp. prec. ± kn06wn
value
-6
+2 exp. prec.
Frequency distribution of responding labs(std. dev. vs mean value)
10-
O-m-r-
f- -₯-
std. dev. -2
mean
value
+2 std. dev.
= No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It s Above control limit
li s Below control limit
------- |