EPA
United States
Environmental Protection
Agency
Environmental Monitoring
Systems Laboratory
P.O. Box 93478
Las Vegas NV 89193-3478
EPA600/R-92/139
July 1992
Research and Development
Performance Evaluation-A
Intercomparison Study
A Statistical Evaluation of the
April 14, 1992 Data
5168GR92NRD-11
-------
Performance Evaluation-A
Intercomparison Study
April 14, 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 Performance Evaluatlon-A; April 14, 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: Performance Evaluation-A, 14-Apr-1992 1/30
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
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: Performance Evaluation-A, 14-Apr-1992 2/30
Gross Alpha Statistical Summary 204 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 10.0; the control limits
are 22.7 to 57.3; the warning regions are 22.7 to 28.4 and 51.6 to 57.3
53(26.0 %) Failed to respond %
2( 1.O%) Outliers'*
11 (5.4 %) Out of control
but not an outlier
Statistic
120(58.8 %) Within all limits
Respondents
18(8.8 %) 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
42.56
31.84
1013.74
74.81
6.41
0.08
39.67
-0.83
-0.01
Grand Avg 39.77
9.39
88.17
23.61
-0.58
-0.02
39.67
-0.83
-0.04
14(9.3 %) More than 3 norm. S.D. %%
17(11.3 %) Between 2 and 3 norm. S.D.
.75(49.7 %) Within 1 norm. S.D.
of known value
45(29.8 %) Between 1 and 2 norm. S.D.
-------
3/30 EMSL-LV Intercomparison Study: Performance Evaluation-A, 14-Apr-1992
Gross Alpha
Lab Res. 1
A
AB
AE
AF
AI
AJ
AK
AL
AO
AP
AR
AU
AW
AZ
BA
BC
BG
BH
BK
BL
BM
BN
BO
BS
SW
C
CA
CE
CG
CJ
CK
CM
CO
CQ
CS
D
DB
DD
DE
DJ
DL
Wt
DO
DS
DT
51.0
'
38.0
50.0
39.0
43.0
40.0
26.0
40.0
45.0
36.0
42.0
91.0
47.0
44.0
59.0
50.0
41.0
36.0
45.0
67.0
42.0
49.0
35.0
35.0
42.0
44.0
35.0
38.0
*', '
24.0
45.0
36.0
51.0
37.0
26.0
31.0
'
*
33.0
41.0
Res. 2
50.0
** f
37.0
47.0
38.0
47.0
41.0
28,0
33.0
42.0
36.0
39.0
$&0
47.0
45.0
61.0
50.0
40.0
30.0
47.0
73.0
38.0
49.0
38.0
33.0
39.0
48.0
32.0
34.0
. ..
22.0
47.0
38.0
49.0
38.0
26.0
32.0
35.0
40.0
Res. 3
54.0
'
37.0
49.0
36.0
47.0
40.0
27.0
32.0
39.0
37.0
40.0
ftMt,
44.0
45.0
59.0
50.0
41.0
32.0
43.0
73.0
41.0
52.0
"
36.0
39.0
42.0
46.0
36.0
36.0
* X /" '
23.0
47.0
39.0
49.0
37.0
28.0
33.0
39.0
40.0
s No data submitted
0 s
Insufficient
data
Exper.
Sigma
2.08
- '
0.58
1.53
1.53
2.31
0.58
1.00
4.36
3.00
0.58
1.53
loo
1.73
0.58
1.15
0.00
0.58
3.06
,
2.00
3.46
2.08
, 1.73
'
1.53
3.06
1.73
2.00
2.08
2.00
A V > f
1.00
1.15
1.53
1.15
0.58
1.15
1.00
3.06
0.58
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.236
$
0.059
0.177
0.177
0.236
0.059
0.118
0.473
0.354
0.059
0.177
Q.l|$
0.177
0.059
0.118
0.000
0.059
0.354
0.236
0.354
0.236
0.177
0.177
0.354
0.177
0.236
0.236
0.236
0.118
0.118
0.177
0.118
0.059
0.118
0.118
0.354
0.059
51.67
37.33
48.67
37.67
45.67
40.33
27.00
35.00
42.00
36.33
40.33
&UOQ
46.00
44.67
59.67
50.00
40.67
32.67
45.00
71.00
40.33
50.00
36.33
35.67
41.00
46.00
34.33
36.00
'
23.00
46.33
37.67
49.67
37.33
26.67
32.00
35.67
40.33
TAG SYMBOLS
= Determined
to be an
outlier
2.06
X f f *
-0.42
1.54
-0.36
1.02
0.10
-2.21
-0.83
0.39
-0.59
0.10
&$?
1.08
0.85
3.45
1.77
0.16
-1.23
0.91
5.41
0.10
1.77
'
-0.59
-0.71
0.21
1.08
-0.94
-0.65
,/ '
-2.90
1.14
-0.36
1.71
-0.42
-2.27
-1.35
-0.71
0.10
ft & Above
U & Below
2.02
''/ -, "»'
-0.46
1.50
-0.40
0.98
0.06
-2.25
-0.87
0.35
-0.64
0.06
8.83 x
1.04
0.81
3.41 ft
1.73
0.12
-1.27
»
0.87
5.37 ft
0.06
1.73
*
-0.64
-0.75
0.17
1.04
-0.98
-0.69
, : .. ,".,,*
-2.94
1.10
-0.40
1.67
-0.46
-2.31
-1.39
* ;
»
«
* \
-0.75
0.06
control limit
control limit
-------
EMSL-LV Intercomparison
Gross Alpha
Lab
DZ
E
EB
EH
EK
"idf
xaMJ-
EO
ER
EV
EX
FE
FF
FJ
FL
FN
FU
FW
FZ
GK
GI
GQ
GT
GZ
HH
m
HK
HL
HN
HP
- Wf f
JS.V--
HY
I
m"
1C
ID
IE
J
JE
JG
JH
JN
JQ
JS
Res. 1
50.0
37.0
46.0
35.0
43.0
' "v$ ' *
f f f, ff
37.0
41.0
37.0
' ' '
43.0
32.0
33.0
58.0
44.0
33.0
34.0
47.0
'-'',' ''
ff" * ' ' , fj>
40.0
37.0
f f f ff f
*. f f
39.0
38.0
; 40&D
52.0
51.0
20.0
46.0
41.0
30.0
f s ' ff s f *'"%?
Sssf jfff '£'$%*
41.0
31.0
37.0
42.0
39.0
53.0
56.0
36.0
49.0
49.0
Res. 2
47.0
38.0
46.0
44.0
35.0
f ff ff ttfff^ ^ ^ f f ^
f ,' f f * f f f
38.0
39.0
41.0
f ' f ** j
42.0
34.0
32.0
60.0
46.0
33.0
41.0
38.0
''''''-'-'/'/, ''
" '';, , 'i %y,lt,
43.0
37.0
41.0
40.0
*' 412.0A?
45.0
51.0
24.0
41.0
39.0
26.0
^ "'/ 'f/ff"^
£ ''/Afjfyff f f-fffjff /
48.0
33.0
38.0
43.0
39.0
52.0
66.0
33.0
43.0
54.0
Res. 3
54.0
39.0
47.0
40.0
35.0
f f ff"'Sf f f
" f/ f'f
40.0
39.0
31.0
' ' /' / '" :'
40.6
35.0
26.0
55.0
47.0
34.0
41.0
39.0
,' '" / '' S''
&'%'""!'>'%'',
45.0
34.0
42.0
38.0
'-;43&0 -
47.0
51.0
21.0
41.0
39.0
29.0
, fff "S ' / . f
' ' '' " ; ; ',/
, f't / '
49.0
28.0
39.0
40.0
41.0
58.0
55.0
50.0
47.0
45.0
3 No data submitted
0 3
Insufficient
data
X 3
Study: Performance Evaluation-A, 14- Apr- 1992 4/30
Exper.
Sigma
3.51
1.00
0.58
4.51
4.62
"7 ' '
f
1.53
1.15
5.03
'
1.53
1.53
3.79
2.52
1.53
0.58
4.04
4.93
;,
' ' ; ', ' ' '
2.52
1.73
1.53
1.15
' - 7<3£
3.61
0.00
2.08
2.89
1.15
2.08
' f
4.36
2.52
1.00
1.53
1.15
3.21
6.08
9.07
3.06
4.51
Rnganal
(R + SR) Average
0.413
0.118
0.059
0.532
0.473
,,,,,.
^ y',f f f
0.177
0.118
0.591
'
0.177
0.177
0.413
0.295
0.177
0.059
0.413
0.532
f' '
ft ff » ,
0.295
0.177
0.177
0.118
&82f
0.413
0.000
0.236
0.295
0.118
0.236
,
'
0.473
0.295
0.118
0.177
0.118
0.354
0.650
1.008
0.354
0.532
50.33
38.00
46.33
39.67
37.67
"* fv ",+, '"#"""
f f f f ' f f
38.33
39.67
36.33
* ' .. '" '''
41.67
33.67
30.33
57.67
45.67
33.33
38.67
41.33
',, '/',''
K ''''"*{ fa '"'*
42.67
36.00
40.67
38.67
4ia,6?
48.00
51.00
21.67
42.67
39.67
28.33
*
f
46.00
30.67
38.00
41.67
39.67
54.33
59.00
39.67
46.33
49.33
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
1.83
-0.31
1.14
-0.02
-0.36
ffff ff f f SfSS ff tfffff fff^ f f ff
ff * ' ,<'* 'I*"" '
-0.25
-0.02
-0.59
» / * '" ,
0.33
-1.06
-1.63
3.10
1.02
-1.11
-0.19
0.27
",'t/ -' ' < ,'',,
> y^fff"'f f s /
0.50
-0.65
0.16
-0.19
' '*'- &-M'
1.43
1.95
-3.14
0.50
-0.02
-1.98
' "e
f^ f
1.08
-1.58
-0.31
0.33
-0.02
2.52
3.33
-0.02
1.14
1.66
ft = Above
11 3 Below
1.79
-0.35
1.10
-0.06
-0.40
'"">""^',,, '» '
'*'' '''* * > -P
-0.29
-0.06
-0.64
9
0.29
-1.10
-1.67
3.06 IT
0.98
-1.15
-0.23
0.23
''''',,, *
;;'/ -''-
0.46
:0.69
0.12
-0.23
64.20 x
1.39
1.91
-3.18 U
0.46
-0.06
-2.02
'
'
1.04
-1.62
-0.35
0.29
-0.06
2.48
3.29 fl
-0.06
1.10
1.62
control limit
control limit
-------
5/30 EMSL-LV Intercomparison Study: Performance Evahiation-A, 14-Apr-1992
Gross Alpha
Lab Res. 1
JY
K
KC
KE
KF
KM
KX
KZ
L
LE
LF
LG
JLM
LR
LT
LX
M
MA
ME
MN
MO
MP
MQ
MS
MV
MY
N
NA
NG
NH
NI
NJ
NK
NO
NT
O
OE
OF
OL
OM
OS
OX
OY
P
40.0
28.0
39.0
'
53.0
32.0
35.0
24.0
39.0
25.0
32.0
30.0
42.0
.:
47.0
,
.. .,
30.0
54.0
39.0
42.0
38.0
40.0
61.0
32.0
56.0
26.0
45.0
30.0
46.0
54.0
36.0
36.0
40.0
42.0
60.0
Res. 2
40.0
28.0
36.0
-
58.0
33.0
34.0
25.0
36.0
25.0
33.0
30.0
46.0
'
49.0
' , f
^
29.0
53.0
42.0
44.0
42.0
45.0
61.0
33.0
66.0
28.0
47.0
32.0
48.0
48.0
37.0
42.0
40.0
42.0
62.0
Res. 3
37.0
25.0
,
36.0
-
61.0
32.0
35.0
28.0
38.0
25.0
34.0
30.0
45.0
45.0
'
, -
,
27.0
56.0
41.0
47.0
39.0
50.0
54.0
33.0
49.0
34.0
43.0
34.0
49.0
48.0
38.0
42.0
43.0
43.0
43.0
s No data submitted
0 =
Insufficient
data
X s
Exper.
Sigma
1.73
1.73
1.73
, ' '
4.04
0.58
0.58
2.08
1.53
0.00
, ':
1.00
p.oo
_, f '
2.08
>,
2.00
1.53
1.53
1.53
2.52
2.08
5.00
4.04
0.58
8.54
4.16
2.00
2.00
1.53
3.46
1.00
3.46
1.73
0.58
10.44
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.177
0.177
*"
0.177
-
0.473
0.059
0.059
0.236
0.177
0.000
0.118
0.000
. 0.236
0.236
_
0.177
0.177
0.177
0.295
0.236
0.591
0.413
0.059
1.008
0.473
0.236
0.236
0.177
0.354
0.118
0.354
0.177
0.059
1.233
39.00
27.00
37.00
,
57.33
32.33
34.67
25.67
37.67
25.00
.
33.00
30.00
f f
44.33
47.00
..
,. f
28.67
54.33
40.67
44.33
39.67
45.00
58.67
32.67
57.00
29.33
45.00
32.00
47.67
50.00
37;00
40.00
41.00
42.33
55.00
TAG SYMBOLS
Determined
to be an
outlier
-0.13
-2.21
-
-0.48
y * f
3.04
-1.29
-0.88
-2.44
-0.36
-2.56
-1.17
-1.69
,
0.79
-
1.25
'
_,
-1.92
2.52
0.16
0.79
-0.02
0.91
3.27
-1.23
2.98
-1.81
0.91
-1.35
1.37
1.77
-0.48
0.04
0.21
0.44
2.64
ft s Above
U = Below
-0.17
-2.25
*
-0.52
*
3.00
-1.33
-0.92
-2.48
-0.40
-2.60
«
-1.21
-1.73
»
0.75
#
1.21
«
*-
-, ' »
-1.96
2.48
0.12
0.75
-0.06
0.87
3.23 ft
-1.27
2.94
-1.85
0.87
-1.39
1.33
1.73
-0.52
0.00
*
» :
0.17
*
0.40
2.60
control limit
control limit
-------
EMSL-LV Intercomparison
Gross Alpha
Lab
PB
j^d'5'
PG
'
'JWU '
PM
PP
PQ
PR
PIT
PV
PW
nr.
Q
QC
QK
QQ
QT
Qtr
QX
01T
QZ
RC
RD
RE
RF
RG
RJ
RK
RM
RN
*»*%'
S\f
RP
RR
RS
RT
Btr
RV
RZ
s
sc
SD
SF
SG
Res. 1
47.0
~ '"'"'-'v, ' ';;"
39.0
f
* ff f fj
35.0
,'
37.0
32.0
' ' '' '
16.0
44.0
,/ ~
32.0
33.0
' ' -
47.0
15.0
' J '/
26.0
'
41.0
- '
37.0
27.0
48.0
33.0
58.0
'" '"' * , ' > -'/"
30.0
41.0
'/,,/, "" "' ,
' f ' " ' /
' > ,;'v!'f'?
29.0
f * f f f
39.0
44.0
46.0
42.0
48.0
69.0
37.0
47.0
Res. 2
_ 44.0
'- '/??f7*'<-
39.0
S ff f f
', *' ' * ' '
32.0
'
36.0
34.0
, ,
20.0
52:0
' ' - * ,
33.0
32.0
, ' '
47.0
20.0
'
27.0
,, ' ,'
40.0
38.0
27.0
47.0
29.0
57.0
f f f
30.0
41.0
* ' - f <
f:/,* tf*
''S?;""'*S'
29.0
-'&;'/;;- -
49.0
47.0
45.0
44.0
45.0
68.0
36.0
49.0
Res. 3
45.0,
s? 'f'^ ', "/
37.0
f ^ f ff ff f. * ff
" '"' ',- '*'/
36.0
, '',,'' ,"'
36.0
36.0
' f * * !
22.0
46.0
, ' - ;, /' , /
36.0
36.0
K7* '?', -
47.0
17.0
' f ' ,*
27.0
f ,
36.0
-
38.0
26.0
45.0
38.0
60.0
'/,;''/' ',£, ',
52.0
41.0
'J^ff * f ^f fff, $f :f
' ff'f '/" '' //' # '//
-0.94
' ;'' *''"' ' - ''"'';
-0.59
-1.00
"
-3.54
1.31
f f
-1.06
-1.06
', ;'' / ''"' ' * '
1.25
-3.89
, ' '
ff S '
-2.27
' . '
-0.13
, '
-0.36
-2.27
1.19
-1.11
3.22
' ...',- '' ' " '
-0.42
0.21
.- *** _, V'f
f f
, -
-1.86
0.16
1.14
1.02
0.68
0.96
5.06
-0.54
1.60
ft s Above
II = Below
0.92
'/ '' /;' 9 '
-0.29
ff f ff
< i ', ' ' - *
-0.98
, ,'y ,* -
-0.64
-1.04
s *
-3.58 1l
1.27
*,
-1.10
-1.10
' - *
1.21
-3.93 Jl
' *'-, '' *
-2.31
*
-0.17
»
-0.40
-2.31
1.15
-1.15
3.18 tr
, ' *
-0.46
0.17
y f ff
, '', *
* ,
-1,91
*
0.12
1.10
0.98
0.64
0.92
5.02 ft
-0.58
1.56
control limit
control limit
-------
7/30
EMSL-LV Intercomparison Study: Performance
Gross Alpha
Lab Res. 1
SI
SL
SN
SO
gR
ss
ST
SW
sx
SY
SZ
T
TJK
1X5
TH
TI
U
W
X
43.0
30.0
31.0
38.0
*
34.0
33.0
23.0
36.0
24.0
35.0
35.0
9.0
23.0
33.0
51.0
37.0
Res. 2
42.0
37.0
29.0
34.0
33.0
33.0
30.0
43.0
31.0
37.0
36.0
-
,
12.0
34.0
30.0
55.0
34.0
Res. 3 Sigma
40.0 1.53
f % "" f
38.0 4.36
29.0 1.15
34.0 2.31
'
34.0 0.58
31.0 1.15
30.0 4.04
43.0 4.04
30.0 3.79
36.0 1.00
34.0 1.00
*" \ f *" "*
' '' ,
10.0 1.53
26.0 5.69
f * ** f
39.0 4.58
46.0 4.51
36.0 1.53
Rnganal
(R + SR)
0.177
0.473
0.118
0.236
0.059
0.118
0.413
0.413
0.413
0.118
0.118
0.177
0.650
0.532
0.532
0.177
Evaluation-A,
Average
41.67
f f f
35.00
29.67
35.33
33.67
32.33
27.67
40.67
28.33
36.00
35.00
' ' "
*
10.33
27.67
34.00
50.67
35.67
14-Apr-1992
Normalized deviation
(grand-avg) (known)
f ff
"
'
'
0.33
-0.83
-1.75
-0.77
'
-1.06
-1.29
-2.10
0.16
-1.98
-0.65
-0.83
' ,
"
-5.10
-2.10
-1.00
1.89
-0.71
0.29
-0.87
-1.79
-0.81
-1.10
-1.33
-2.14
0.12
-2.02
-0.69
-0.87
-5.14
-2.14
-1.04
1.85
-0.75
Tag
,
# :
^
*
*
......
" '*.
«
Data sorted by Laboratory Average
Average
10.33
17.33
19.33
21.67
23.00
25.00
25.67
26.67
26.67
26.67
27.00
27.00
27.67
27.67
28.33
28.33
28.67
29.00
Tag
U
. u
Jl
= No data submitted
0 s Insufficient data
Lab
TH
QT
PV
HN
CO
LG
LE
RE
QX
DD
K
AL
TI
SW
SY
I
MQ
RR
Average
29.33
29.67
30.00
30.33
30.67
32.00
32.00
32.33
32.33
32.67
32.67
33.00
33.33
33.33
33.67
33.67
33.67
33.67
Tag
Lab
NJ
SN
LT
FJ
ID
NO
DE
ST
KZ
NH
BK
LR
RG
FU
SS
QC
Q
FF
Average
34.00
34.00
34.33
34.33
34.67
35.00
35.00
35.00
35.33
35.67
35.67
35.67
36.00
36.00
36.00
36.33
36.33
36.33
TAG SYMBOLS
x = Determined to be an outlier
Tag
ft s Above
Ji s Below
control
control
Lab
U
PR
PM
CJ
L
T
SL
AO
SO
X
DS
CA
SZ
GT
CK
PQ
EV
C
limit
limit
-------
EMSL-LV Intel-comparison Study: Performance Evaluation-A, 14-Apr-1992 8
Gross Alpha
Average Tag
36.33
36.67
37.00
37.00
37.33
37.33
37.33
37.67
37.67
37.67
37.67
37.67
38.00
38.00
38.33
38.33
38.67
38.67
39.00
39.00
39.67
39.67
39.67
39.67
39.67
39.67
40.00
40.33
40.33
40.33
40.33
40.67
% Frequency
° -6 ' I
= No data submitted
0 = Insufficient data
Data sorted by Laboratory Average
Lab
AR
SF
OE
KE
RM
DB
AE
RD
LF
EK
CS
AI
IE
E
PG
EO
HH
FW
QZ
JY
N
JN
JE
HY
ER
EH
OF
DT
BO
AU
AK
SX
Average Tag Lab
40.67 RT
40.67 MV
40.67 GZ
40.67 BH
41.00 RN
41.00 OS
41.00 CE
41.33 FZ
41.67 SI
41.67 J
41.67 FE
42.00 AP
42.33 OY
42.67 HP
42.67 GQ
43.67 S
44.33 MY
44.33 M
44.67 BA
45.00 NK
45.00 NA
45.00 BM
45.33 SC
45.33 PB
45.67 RZ
45.67 FN
45.67 AJ
46.00 1C
46.00 CG
46.00 AZ
46.33 RV
46.33 JQ
Average Tag
46.33
46.33
46.67
47.00
47.00
47.33
47.67
48.00
48.67
49.00
49.33
49.67
50.00
50.00
50.00
50.33
50.67
51.00
51.67
54.33
54.33
55.00
57.00
57.33
57.67 ft
58.33 ft
58.67 ft
59.00 ft
59.67 ft
69.00 ft
71.00 ft
91.00 x
410.67 x
distribution of responding labs(expected prec. vs known value)
- - - - - - H ll - - 1
.--.I- ._ _
exp. prec. -2 known exp. prec. *
value
TAG SYMBOLS IT s Above control
x s Determined to be an outlier li 3 Below control
730
Lab
EB
CQ
RF
QQ
ME
PW
NT
HK
AF
SG
JS
D
O
BS
BG
DZ
W
HL
A
MS
JG
P
NI
KX
FL
RJ
NG
JH
BC
SD
BN
AW
HI
fti
+6
limit
limit
-------
9/30 EMSL-LV Intercomparison Study: Performance Evaluation-A, 14-Apr-1992
Gross Alpha
% Frequency distribution of responding labs(std. dev. vs mean value)
10
* '4 std. dev. -2 ^^ +2 std. dev. +*
value
-------
EM8L-LV Intel-comparison Study: Performance Evaluation-A, 14-Apr-1992 10 / 30
Radium-226 Statistical Summary 204 Participants
The known value of this nuclide is 14.9 pCi/1 with an expected precision of 2.2; the control limits
are 11.1 to 18.7; the warning regions are 11.1 to 12.4 and 17.4 to 18.7
1O6(52.O %) Failed to respond;
2(1.0 %) Outliers
9(4.4 %) Out of control
but not an outlier
Statistic
. 69(33.8 %) Within all limits
Respondents
* 18(8.8 %) 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
14.79
5.06
25.58
34.18
-0.71
-0.02
14.20
-4.70
-0.14
Grand Avg 14.26
2.19
4.80
15.37
-4.29
-0.29
14.17
-4.92
-0.33
11 (11.2 %) More than 3 norm. S.D. »
18(18.4 %) Between 2 and 3 norm. S.
,46(46.9 %) Within 1 norm. S.D.
of known value
23(23.5 %) Between 1 and 2 norm. S.D.
-------
11/30 EMSL-LV Intel-comparison
Study: Performance Evaluation-A, 14-Apr-1992
Radium-226
Lab
A
AB
AE
AF
AI
AJ
AK
AL
AO
AP
AE
ACT
AW
AZ
BA
BC
BO
BH
BK
BL
BM
BN
BO
BS
JJW
C
CA
CE
CG
CJ
CK
CM
CO
cs
DB
D0
DE
DJ
DL
DO
US
DT
Res. 1
14.4
13.0
13.6
14.3
13.9
14.7
12.8
13.0
'
17.8
15.5
10.2
&&
13.1
14.9
12.0
14.1
11.3
14.0
16.9
13.4
12.7
14.0
11.0
13.6
/
11.6
13.6
15.1
%
14.3
Res. 2
15.0
._
12.0
13.5
15.1
14.0
15.7
11.9
'
14.2
, , -
'
'
14.8
14.9
10.7
, "> 4 J
13.8
15.0
10.1
13.9
11.6
15.1
f ' ,
17.2
12.5
12.1
14.0
15.0
12.8
- ',*«''
' , "!, * '
11.9
15.3
15.2
15.9
Res. 3
14.7
,
14.0
13.7
14.1
14.2
17.1
15.3
14.3
-
'
19.0
14.9
10.7
'
12.8
15.0
11.1
13.8
11.3
14.1
' -." '
17.0
12.2
12.9
14.2
14.0
12.9
/ " ', '' ''
f ?,. f f ff
12.2
15.9
15.3
-
.."
15.6
= No data submitted
0 m
Insufficient
data
X s
Exper.
Sigma
0.30
,
1.00
0.10
0.53
0.15
1.21
1.76
,
0.72
,
2.16
0.35
0.29
0.51
0.06
0.95
0.15
0.17
0.61
0.15
0.62
0.42
0.12
2.08
0.44
, ' ' '/
0.30
1.19
0.10
0.85
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.161
0.537
0.054
0.268
0.081
0.644
0.913
0.349
1.243
0.161
0.134
'
0.268
0.027
0.510
0.081
0.081
0.295
0.081
0.322
0.215
0.054
1.141
0.215
14.70
' ' V ,
13.00
13.60
14.50
14.03
15.83
13.33
'
13.83
f S
'.
f , f
17.20
15.10
10.53
" ,
13.23
14.97
11.07
13.93
11.40
14.40
17.03
12.70
12.57
14.07
13.33
13.10
0.35
S
-0.99
-0.52
0.19
-0.18
1.24
-0.73
'
-0.34
'
2.31
0.66
-2.93
-0.81
0.56
-2.51
-0.26
-2.25
0.11
2.18
-1.23
-1.33
-0.15
-0.73
-0.91
-0.16
'<''"' »
-1.50
-1.02
-0.31
-0.68
0.73
-1.23
* !
-0.84
«
»
*
1.81
0.16
-3.44 JJ.
' , 0
-1.31
0.05
-3.02 U
-0.76
-2.76
-0.39
* :
*
1.68
-1.73
-1.84
-0.66
-1.23
-1.42
f '
' , , ' ' ' " - ' *
0.161
0.618
0.054
0.430
11.90
14.93
15.20
15.27
TAG SYMBOLS
Determined
to be an
outlier
-1.86
0.53
0.74
0.79
ft s Above
U s Below
-2.36
0.03
»
0.24
«
»
* '
»
0.29
control limit
control limit
-------
EMSL-LV Intel-comparison
Radium-226
Lab Res. 1
DZ
E
-J5H,
EL
EO
ER
ft
FE
^,J8P -,
- Ft*'
FN
JPW
m> ,
GI
GQ
^ ' * ' ' ' ^
17.9
X ' /
/ ^ -*^
/
12.1
^
» ^ '/ ' /
17.0
; , ' '
14.0
11.4
18.4
f f *
14.0
14.6
,''*"/ }7 '/^f.
10.9
'
14.2
17.5
15.9
'
13.4
& No data submitted
0 =
Insufficient
data
y. s
Study: Performance Evaluation- A, 14- Apr- 1992 12/30
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
1.16
0.35
*',-*% , ' '
t
f
f ff f ff
1.35
0.31
'
1.53
< , , * ' '
'' '", '' ,... // ,
0.60
,
'-;
0.32
* f
f
1.31
0.42
O.pO
0.55
0.49
0.95
0.96
0.87
0.80
1.40
1.75
0.618
0.161
fs
0.725
0.161
0.805
; /
t ,,l, ^ /
0.322
"
0.161
''
'
0.671
0.215
0.000
0.268
0.242
0.510
0.510
0.430
0.430
0.725
0.940
17.53
14.90
->X.-.- f f '*/'''*
f ft, ^ f Jff f f^ ^
*f/s£, ' f ' f
13.07
15.23
",
13.33
f f f ff f
%i \*2,»
18.47
f f f
;
,
12.23
'
'
15.97
14.13
11.40
,'
18.77
13.67
13.67
10.03
15.20
17.50
14.77
13.43
TAG SYMBOLS
Determined to
be an
outlier
2.58
0.50
SSP
ftf '? f *" ' f f
-0.94
0.77
''-
-0.73
fff '*£ ^ *
f f S f f
3.31
' ' '",, '/'
,
-1.60
* "*
'
1.34
-0.10
-2.25
3.55
f
-0.47
-0.47
/ fff
-3.33
0.74
2.55
0.40
'
-0.65
IT s Above
U s Below
2.07
o.oo_
'V/;->:'S?
'-, ',', - ',V-
-1.44
0.26
- ' *
-1.23
,' , *
' , *
" '' " - '+',',
2.81
*'-
, , - *
*
-2.10
*
9
0.84
-0.60
-2.76
*
3.04 IT
-0.97
-0.97
/ r
*
-3.83 U
*
*
0.24
2.05
-0.10
» ^
*
*
-1.15
control limit
control limit
-------
13 / 30 EMSL-LV Intercomparison Study: Performance Evaluation-A, 14-Apr-1992
Radium-226
Lab
JY
K
KO
KB
KF
KM
KT
KX
KZ
L
LE
1X3
LM
LR
LT
M
MA
ME
MN
M0
MP
MQ
MS
MV
Mlf
N
NA
NG
NH
NI
NJ
NK
NO
NT
om
OF
OL
OM
OS
OX
OY
P
Res. 1
'14.4
12.9
ff
13.3
11.9
-
..
12.0
12.5
16.0
'
19.2
15.2
17.0
13.6
14.5
12.0
19.0
-
15.8
13.3
12.8
'
15.1
11.9
12.1
Res. 2
18.9
14.3
*
"
-
^
12.1
14.3
,
f
,
12.2
14.5
.
15.7
'
18.8
14.6
18.0
13.7
15.2
9.6
20.0
v ' *';'' /, '
16.4
13.4
'
14.5
15.2
11.7
13.4
Res. 3
18.3
15.6
'
*/ ' f
*
>
'"
11.6
12.9
-
..
.
12.4
13.0
16.2
,
19.1
-
14.7
19.0
13.7
14.3
12.0
14.0
.-, ';''-
16.7
13.5
*
15.3
-
15.6
12.3
12.9
= No data submitted
0 a
Insufficient
data
x =
Exper.
Sigma
2.44
1.35
"
>'',
'-/,"
,
f
0.87
1.21
' ^ ,
', , -
0.20
1.04
0.25
, '
'
0.21
/
'
0.32
1.00
0.06
0.47
1.39
3.21
,
0.46
0.10
1.28
0.26
0.31
0.66
Rng anal
(R + SR) Average
1.397
0.725
/
'
0.456
0.644
0.107
0.537
0.134
0.107
0.161
0.537
0.027
0.242
0.644
2.164
0.242
0.054
0.671
'
0.134
0.161
0.349
17.20
14.27
'
f
' ,,
' '
12.33
13.03
,
,, <
*
12.20
13.33
'
15.97
-
19.03
'
14.83
18.00
13.67
14.67
11.20
17.67
16.30
13.40
14.20
15.30
11.97
12.80
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
2.31
0.01
'
'
t
f fff
- -
-
-1.52
-0.97
/
"
', f
-1.62
f
-0.73
"
1.34
-
'
'
3.76
''
0.45
2.94
-0.47
0.32
-2.41
2.68
f
1.61
-0.68
-0.05
0.82
-1.81
-1.15
IT s Above
li = Below
1.81
-0.50
«
' * ''
' *
' #
»
«
-2.02
-1.47
*
', - *
*
»
-2.13
-1.23
*
0.84
*
* ;
» :
« i
3.25 1T
f *
#
-0.05
2.44
-0.97
-0.18
-2.91
2.18
*
1.10
-1.18
.
-0.55
*
»
«
0.31
-2.31
-1.65
control limit
control limit
-------
EMSL-LV Intercomparison Study: Performance Evaluation
Radium-226
Lab
PB
'm
PG
ftflf
Ft*
PM
PP
FQ
!»»
XV
PV
PW
FY
* »
Q
QC
QK
QQ
fjjl1
Qtr
QW
QX
QY
QZ
RC
RD
RE
RF
RG
B#
RK
RM
RN
BO
BF
RR
RS
BE
BU
RV
RZ
S
sc
SD
SF
SO
Res. 1
14.2
" ""^ '%
16.8
15.0
12.1
', '; ,-, ' ' '
' ,'/ ff', ";''
" '": >'-'/
11.9
18.2
.. .. .. , ..
14.4
'"
.-,
-
- 1&8
$££
'
10.2
17.4
13.7
12.8
14.5
jj
12.6
14.9
ff
Res. 2
14.1 ^
, '*" ^ "/'/<',
16.3
16.0
13.1
w : ' "",,
'/ ' ' '' ' 'a ;
'; - " '' '
8.2
24.1
***"* ' ff '
14.8
;
/
, « ' ^/
'- ' ''
VV4M
f-
8.1
16.7
13.6
11.6
15.4
j.
11.7
14.4
ff ff '' f
Res. 3
14.3
>x ^ '; '/,
16.6
15.0
11.9
XV;*'">/
'^!4' y f,?;
'/: /../-;
14.5
19.1
/ ' f
12.3
,r -"^ - V
> _,
.** * f f
"" ' " ' f f *
f ff* * ffffff
''''"' 574
f
13.4
17.2
13.7
17.4
14.3
'*,"'-'
12.4
15.8
/'//-/I
f ' *f f f ' v f J £ -f -ff* /
f f s ' f J
16.1
19.4
*'', ' }"''' ^
i ' f, f'f
'' ''', '*"/
f f/ft
16.3
_ ^18.3_
*T'J*'' '^'
v' £//,>"'&/, ;
^* %f ?f f ff
f$'yf'f*'f f ""** f "" ^ p-'* /
16.6
17.0
i'?;' ^'^'' T"
''if /"''s''' '
''' <
Exper.
Rnganal
Sigma (R + SR) Average
0.10
'' "
0.25
f f / f
> " _,
0.58
0.64
Sff
f f ff f f f ff
' J f "* ft*
3.17
3.18
1.34
' ,
.'
f
'
' &S3
2.67
0.36
0.06
3.06
0.59
,
0.47
0.71
, f ' '',
0.25
1.20
f f
J
0.054
> ,' - -"'/
0.134
0.268
0.322
Xj-V '
' "'; ' ',
' '""
2.317
2.113
f ^ f/f f
0.671
f f
-- -
^
-' "'>
16.57
15.33
12.37
' ' ' ' ' ' * f
f f^ f * * ff '
ff "', '>",''"?, ' ' /
'f-, , t ',/ '^ , Sff
11.53
20.47
f f
13.83
- -, - , - ^
" f S
f - - ^//'^'
x '''-/ "
moo
10.57
17.10
13.67
13.93
14.73
',
12.23
15.03
£*/ ,;/"'J'^'
^ " ^
16.33
18.23
' ^ ^
S^ /
,.
A, 14-Apr-1992 14/30
Normalized deviation
(grand-avg) (known) Tag
-0.05
-,'",' "f^',-'*
1.82
0.84
-1.49
-;; "^f; ' ',"''''>
&;, ';'' ,' '"/ , '
*'"*/ */ /r" -
-2.15
4.89
*
-0.34
........ , ,
tf<, ; ">.
'/ " ' ' '
' ' .' ,
85x14
f / -
-2.91
2.24
-0.47
-0.26
0.37
'
-1.60
0.61
/ ' *f f
f
1.63
3.13
- ' , ff' " '"
,
f f ' '*"' ' SffffV ff' f ~j'ff j 'f f f Jf f
'
16.6
13.9
14.6
13.9
13.7
15.4
'
' ' ' "
. '
16.7
13.6
14.3
13.2
15.3
16.4
' /
'
'
15.1
13.8
14.4
13.9
12.5
15.5
' '
= No data submitted
0 s
Insufficient
data
X 2
0.90
0.15
0.15
0.40
1.40
0.55
0.430
0.081
0.081
0.188
0.752
0.268
16.13
13.77
14.43
13.67
13.83
15.77
f
TAG SYMBOLS
Determined
to be an
outlier
1.47
-0.39
0.14
-0.47
-0.34
1.19
..' * ',
ft s Above
li s Below
-0.55
~ ' n<< *' '
1.31
0.34
-1.99
{ ':. "; 9 -'
f, ' f , *
' -,, --. ^- -
-2.65
4.38 ft
*
-0.84
*
' *
*
: 0
^464 X
-3.41 T
1.73
-0.97
-0.76
-0.13
' *
-2.10
0.10
- , ' - *
*
1.13
2.62
f
*
*
*
0.97
-0.89
-0.37
-0.97
-0.84
0.68
*
control limit
control limit
-------
15/30 EMSL-LV Intercomparison Study: Performance
Radium-226
Lab Res. 1 Res. 2
SI 11.6 12.2
f " ffff "
fl*F \f f * f ,*/***'
mu , ' - \
SN / . ' i *
so
8R
SS 16.0 14.1
ST - :' '
SW 7.3 7.7
SX
m , ,
SZ 23»9 2$&9
T 14.9 14.2
TA 15.3 15.7
TO
1*J -' -
TI 10.4 11.6
TK
U 15.6 16.3
W 15.3 15.7
X 11.8 10.2
Z
Exper. Rng anal
Res. 3 Sigma (R + SR)
11.8 0.31 0.161
y f ft ,/ " f ' "
", V , ' '**,*'' '
* f
,,.., , ,.. ,
"~ f f
- '"
15.2 0.95 0.510
.. % * ",, '-
7.5 0.20 0.107
''
^
1^.2 2.48 1A9$
14.4 0.36 0.188
13.9 0.95 0.483
, ,,,,, ,,, ,, , ^ , ' '
'^j % / %
12.1 0.87 0.456
^
14.2 1.07 0.564
14.6 0.56 0.295
7.8 2.01 1.141
'
Evaluation-A, 14-Apr-1992
Normalized deviation
Average (grand-avg) (known)
11.87 -1.88 -2.39
f f ff ff f , f f'sf$fffj f f f
;- ;f * * , , ,
%" f f
',,',-' "-
'- ' ' *
' r ' - "
15.10 0.66 0.16
$ /
>
7.50 -5.32 -5.83
'
22.00 0.09 - 5.59
14.50 0.19 -0.31
14.97 0.56 0.05
'-"' " '< \
11.37 -2.28 -2.78
'" .
15.37 0.87 0.37
15.20 0.74 0.24
9.93 -3.41 -3.91
"
Tag
- :
' ,*
«
» ,
*
*'-
*
u.
»
«
X
*
*
»
11
*
Data sorted by Laboratory Average
Average Tag
7.50 U
9.93 11
10.03 U
10.53 U
10.57 li
11.07 U
11.20
11.37
11.40
11.40
11.53
11.87
11.90
11.97
12.20
12.23
12.23
12.33
s No data submitted
0 = Insufficient data
Lab Average Tag
SW 12.37
X 12.57
ID 12.70
BC 12.80
QX 13.00
BL 13.03
NI 13.07
TI 13.10
HL 13.23
BN 13.33
PV 13.33
SI 13.33
CS 13.33
OY 13.40
LT 13.43
RF 13.60
GQ 13.67
KZ 13.67
TAG SYMBOLS
Lab Average Tag
PP 13.67
CE 13.67
CA 13.67
P 13.77
AE 13.83
L 13.83
EO 13.83
CK 13.93
BH 13.93
M 14.03
FE 14.07
CJ 14.13
AL 14.20
NT 14.20
JS 14.27
AF 14.40
SC 14.43
QZ 14.50
ft s Above control
x s Determined to be an outlier !! = Below control
Lab
NG
I
HY
RZ
SD
Q
AP
RC
BM
AJ
CG
HK
PB
OF
K
BO
S
T
limit
limit
-------
EMSL-LV Intercomparison Study: Performance Evaluation-A, 14-Apr-1992 16
Radium-226
/30
Data sorted by Laboratory Average
Average Tag Lab
14.50 AI
14.67 NH
14.70 A
14.73 RD
14.77 JG
14.83 N
14.90 E
14.93 DB
14.97 TA
14.97 BK
15.03 RG
15.10 SS
15.10 BA
15.20 W
Average Tag Lab
15.20 J
15.20 DE
15.23 ER
15.27 DT
15.30 OX
15.33 PM
15.37 U
15.77 SF
15.83 AK
15.97 ME
15.97 GZ
16.13 RV
16.30 NO
16.33 RM
16.57 PG
Average Tag
17.03
17.10
17.20
17.20
17.50
17.53
17.67
18.00
18.23
18.47
18.77 IT
19.03 IT
20.47 IT
22.00 x
58.90 x
Lab
C
QY
JY
AZ
JE
DZ
NJ
NA
RN
FN
HP
MS
PW
SZ
QU
% Frequency distribution of responding labs(expected prec. vs known value)
10- .
IB _ B
_ _. . .--l.-llllllllll-l .-_. _ _
- -4 exp. prec. -2 known exp. prec. +4
value
% Frequency distribution of responding labs(std. dev.
10' ____
o - ₯ -
- . 1 -
.1 ..llllllllll .._
-6 -4 std. dev. -2 0 +2
mean
value
& No data submitted
0 & Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
vs mean value)
std.'dev. +4
tT = Above control
11 3 Below control
+6
+6
limit
limit
-------
EMSL-LV Intel-comparison Study: Performance Evaluation-A, 14-Apr-1992 17 / 30
Radium-228 Statistical Summary 204 Participants
The known value of this nuclide is 14.0 pCi/1 with an expected precision of 3.5; the control limits
are 7.9 to 20.1; the warning regions are 7.9 to 9.9 and 18.1 to 20.1
112(54.9 %) Failed to respond
3(1.5 %) Outliers
6(2.9 %) Out of control
but not an outlier
Statistic
; 70(34.3 %) Within all limits
Respondents
* 13(6.4 %) 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
13.53
4.12
16.96
30.45
-3.39
-0.12
13.27
-5.24
-0.18
Grand Avg 13.05
3.21
10.33
24.63
-6.81
-0.30
13.20
-5.71
-0.25
9(9.8 %) More than 3 norm. S.D. »%
13(14.1 %) Between 2 and 3 norm. S.D
;47(51.1 %) Within 1 norm. S.D.
; of known value
Between 1 and 2 norm. S.D.
-------
187
30 EMSL-LV Intercomparison Study: Performance Evaluation-A, 14-Apr-1992
Radium-228
Lab
A
AB
AE
AF
AI
AJ
AK
AL
AO
AP
AE
Atf
AW
AZ
BA
BC
BO
BH
BK
BL
BM
BN
BO
BS
BW
C
CA
CE
CG
CJ
CK
CM
CO
CQ
CS
D
DB
DD
DE
DJ
DL
BM
DO
DT
Res. 1
7.2
15.5
14.7
14.1
13.6
16.0
13.5
13.5
-
8.3
12.5
7.2
10.0
12.1
12.2
'
15.9
16.4
10.9
15.7
12.8
13.1
16.0
10.2
f , ^
11.0
-
13.6
17.6
13.5
Res. 2
8.0
16.0
15.6
14.0
13.8
14.2
14.1
"
14.4
7.9
14.0
10.1
8.0
13.0
12.2
15.2
'
17.3
' ' , '
12.0
14.0
14.2
10.9
15.0
10.4
'
. J * ^
f :'fff
10.4
'
15.0
17.9
12.5
Res. 3
8.9
16.2
14.8
14.5
14.0
15.6
12.9
14.0
8.4
19.5
6.8
7.5
10.5
12.4
14.2
15.6
12.1
13.8
13.8
14.0
15.0
10.8
' - '
:'/
11.0
12.1
17.7
12.3
= No data submitted
0
Insufficient
data
x =.
Exper.
Sigma
0.85
0.36
0.49
0.26
0.20
0.95
0.60
0.45
0.26
3.69
1.80
1.32
,.
1.27
0.12
0.85
0.85
0.67
1.04
0.72
1.59
0.58
0.31
*
f jf
0.35
1.45
0.15
0.64
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.287
6.118
0.152
0.084
0.068
0.304
0.203
0.152
0.084
1.345
0.557
0.422
0.422
0.034
0.287
0.287
0.203
0.321
0.236
0.523
0.169
0.101
'
0.101
0.489
0.051
0.203
8.03
* '-. '
15.90
15.03
14.20
13.80
15.27
13.50
13.97
8.20
15.33
8.03
8.50
11.87
12.27
15.10
"
16.43
'
11.67
14.50
13.60
12.67
15.33
10.47
.. ^
'
10.80
13.57
17.73
12.77
TAG SYMBOLS
Determined
to be an
outlier
-2.48
1.41
0.98
0.57
0.37
1.10
0.22
*
0.46
-2.40
1.13
-2.48
-2.25
-0.58
-0.39
1.02
'
1.68
-0.68
0.72
0.27
-0.19
1.13
-1.28
.
''
-1.11
0.26
2.32
-0.14
1T s Above
U = Below
-2.95
. "*
0.94
0.51
0.10
-0.10
0.63
-0.25
*
-0.02
«
»
-2.87
0.66
-2.95
-2.72
*
-1.06
-0.86
»
0.54
*
1.20
« .
*
-1.15
0.25
-0.20
-0.66
0.66
-1.75
*
» !
*
-1.58
»
-0.21
' »
1.85
«
»
«
* :
-0.61
control limit
control limit
-------
EMSLrLV Intel-comparison Study: Performance Evaluation-A, 14-Apr-1992 19 / 30
Radium-228
Lab Res. 1
Exper. Rnganal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
DZ
EB
.**'
EL
EO
ER
JBV
wr-
it
FN
GE
Gl
GQ
ffl
HK
HL
HP
Htf
HY
I
ID
IE
j
JE
JG
OH
JQ
JS
10.1
10.4
10.4
'-' "S,
12.8
12.0
18.8
11.4
12.3
9.3
12.2
14.2
12.6
13.0
16.0
14.9
11.8
13.0
13.5
13.2
18.4
11.2
12.8
9.3
v
11.5
f> ' /,,
15.1
12.1
13.4
13.1
15.7
12.9
11.0
13.6
12.7
17.6
11.8
13.8
9.3
12.1
15.9
11.8
13.2
13.9
15.3
11.3
11.0
0.17
0.051
10.30
-1.36
-1.83
0.44
0.60
0.76
0.00
0.38
0.85
0.40
0.20
1.50
0.40
0.82
1.15
0.135
0.203
0.61 0.203
0.31 0.101
0.253
0.000
0.118
0.287
0.135
0.068
0.489
0.135
0.270
0.338
'' >' ' ,' ' ' ,' , ', ' ""' ' , '', " 'm,
!-..*'-" ,":'&;;<<*?:-';"' ;:*z'.;*-x>'i fftW"' ^' <
' - ' - ' "> '*'«"/ A. ,, ,^>;: *&'L*J,<;'Z, 4 v ;i"/'i;
- -" , ^::-^>', 4* -'Vv:, "':'.:^ >', V-!-' ,-^ j; *
- ^ * x--^ * f * f fj j sjfrf tf S, t fgff * ff A t ffj ' ' W
13.30
12.63
18.27
12.97
9.30
'S
11.93
15.07
12.17
13.20
14.33
15.30
12.00
11.67
0.13
-0.20
2.58
11.47 -0.78
-0.04
-1.85
-0.55
1.00
-0.44
0.08
0.64
1.12
-0.52
-0.68
-0.35
-0.68
2.11
-1.25
-0.51
-2.33
-1.02
f
0.53
-0.91
-0.40
0.16
0.64
-0.99
-1.15
*
*
*
*
= No data submitted
0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft = Above control limit
U = Below control limit
-------
20 /
30 EMSL-LV Intercomparison Study: Performance Evaluation-A, 14-Apr-1992
Radium-228
Lab
JY
K
KC
KF
KM
KT
JGC
KZ
L
LE
IUF
1X3
LM
LR
LT
LX
M
MA
ME
UN
MO
MP
MQ
MS
MV
MIT
N
NA
NG
NH
NI
NJ
NK
NO
NT
O
OB
OF
OL
OM
OS
OX
OY
P
=
0 E
Res. 1
13.5
13.6
s
' '
21.0
12.8
-
12.0
17.8
13.2
'
-
15.5
"
14.1
.
16.3
10.1
11.6
14.0
13.7
15.0
12.7
'
13.5
5.1
9.7
Res. 2
17.5
12.4
',. ''
'
20.4
14.2
'
f
12.4
- '
18.0
14.8
'
-
''' "
13.8
'' *
15.2
'
15.2
12.6
8.2
11.0
16.2
11.6
13.0
j,
14.3
4.4
10.7
Res. 3
20.3
11.7
-
/:
j.
19.9
14.6
' *
12.2
14.9
-
20.2
;
f
''
15.0
'
12.8
14.2
11.6
6.8
14.0
18.6
13.3
13.7
13.9
4.6
11.5
No data submitted
Insufficient
data
x =
Exper.
Sigma
3.42
0.96
-' . ,
f
0.55
0.95
- <
f
0.20
1.73
3.67
f
'
0.87
f'
'
1.20
-;/
1.05
1.26
2.47
1.73
2.45
1.70
0.51
0.40
0.36
0.90
Rnganal
(R + SR) Average
1.281
0.321
- '
0.186
0.304
0.068
0.523
1.345
,
0.287
0.405
*
0.354
0.422
0.810
0.506
0.827
0.574
0.169
0.135
0.118
0.304
17.10
12.57
- '
, -f -,
t f f f
f
20.43
13.87
f
-
,
12.20
16.90
f
16.07
' '
'' '"
14.77
"
"
14.03
15.23
11.43
8.87
13.00
16.17
13.30
13.13
13.90
4.70
10.63
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
2.01
-0.24
V
, ' ' '
, ,' '
'«
3.66
0.41
-
\
-
-0.42
1.91
1.49
'
0.85
-
0.49
1.08
-0.80
-2.07
-0.02
1.54
0.13
0.04
0.42
-4.13
-1.19
ft = Above
li = Below
1.53
-0.71
*
' *
9-
* ' '
3.18 T
-0.07
*
*
*
*
-0.89
*
1.44
#
1.02
*
-*
9-
' " «
0.38
*
*
0.02
* i
0.61
-1.27
-2.54
-0.49
1.07
-0.35
«
»
-0.43
«
»
«
-0.05
-4.60 Jl
,1.67
control limit
control limit
-------
EMSL-LV Intel-comparison Study : Performance Evaluation- A, 14- Apr- 1992 21/30
Radium-228
Lab
PB
PC*-''
"*
PCT
PM
PP
PQ
P»
FU
PV
PW
FT
Q
$&-
OF
QQ
QT
QU
QW
, QX
^1f-
QZ
RC
RD
B>g
RF
BG
'B*T
RK
RM
RN
BO
BF
Rtt .
RS
RU
RV
RZ
S
sc
SD
SF
^w>*£
86
Res. 1
13.6
ff ff
' sf
f
' ' f
16.0
11.0
-'' >,
'', ' ''
12.9
13.5
9.5
,
';'', ''
'' -'
6.8
-_,
.,,,;, $%& ''
< ','
12.9
20.5
8.4
f J '*
15.3
30g&
, ' ' '
* : .. ""
15.6
13-4
- ^^ .. ^ ^ #j
, ", 'v-3
-' ;'l^W
" y.-
9.9
13.0
13.4
12.1
9.9
16.2
'\i ' ' '
Res. 2
13.5
, ", ; >, - ,, ,
* * '' >
' , ' ' ' '' "
15.0
7.8
'
- "" 'J,
'
29.9
14.0
,
9.0
.'..,.
* / , * ,
'
7.5
' j - -'
',-',,,&&,
" , '
12.6
17.3
7.5
17.9
27<0
' i ' ,
' ''" ','
16.7
11.1
,*', '/,',^ ,;
&&& ''!',i'
$&£'*'*'','} ";
*&?-,*?' ' ' *<
' ?'" ; '"
10.7
13.5
13.6
11.9
9.2
17.3
' ' '' ',
Res. 3
13.7
'''*", ' ' ''','''
< fj ' ,' ' *
' 'J
14.0
10.6
'
' , "";""
'. ''' " '' '- '
21.8
13.4
' ,
11.9
f f f
f ' '.
**" * ' '
f
8.0
f j f
, ',$$&/
' :, ' '
12.5
17.1
8.0
; ' ,
17.9
-81,$
/; < ,'/y' 'V 's.
' "''"" ,/ ,'
10.9
13.0
*"£is'*J
"'if': ^'-C';'
' ' '*' s ' '
f f *$
10.3
12.6
12.7
11.5
8.2
13.2
"/
s No data submitted
0 s
Insufficient
data
x =
Exper.
Sigma
0.10
^ -
/
' ,' '
1.00
1.74
, ' /
\
,
8.50
0.32
1.55
j. f
'
-
0.60
- < i$& ,
,
0.21
1.91
0.45
1.50
2.3S
f ' '
_, f
3.08
1.23
yv '
" '"
_,
0.40
0.45
0.47
0.31
0.85
2.12
Rnganal
(R + SR) Average
0.034
* ;
^ -
' '
0.338
0.540
f f
",f ' '
- *
4.560
0.101
0.489
f f
' '
>
',
0.203
f
'0,45S2
0.068
0.574
0.152
0.439
0x75$
0.979
0.388
f f ^ f
0.135
0.152
0.152
0.101
0.287
0.692
13.60
f f ' , *s
' , '
' ' 7 *
15.00
9.80
f
' ' ' *,
', '''<'*/
21.53
13.63
-
10.13
' ',
; -; -'"" '
- /; ,'" *
7.43
,
moo
12.67
18.30
7.97
.. ,, / ,, ^ .
17.03
S^»70-
j-
' '-, -
14.40
12.50
- ,' * ' '',"
'
10.30
13.03
13.23
11.83
9.10
15.57
' ,
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
0.27
/ /' ' j|' ?t ' '/,'
V*' / ' ''"' '
it ' ' '''' '' ' '
0.97
-1.61
' *' ' 7 '*,
' ' ,*,'*'
f tf * / ' *
4.20
0.29
-1.44
'....''.
"," , "
f *" ''
s '
f f
f
-2.78
^
, : 7-40,
-0.19
2.60
-2.51
''' '.
1.97
' SJSS4' ,
* f *$ ff '
'/ ':/ '' < '/' ''
0.67
-0.27
"> /4f -'''J'' -7
' , '
-1.36
-0.01
0.09
-0.60
-1.95
1.25
- f fj '
IT s Above
li s Below
-0.20
"',,'' * '
'>-, * *
; ' , »
_...".
0.49
-2.08
-'' ' 'f
* ' '
4
3.73 IT
-0.18
f" f
-1.91
*
*
*
*
-3.25 li
* ,
&8JJ x
*
-0.66
2.13
-2.99
*
1.50
7.77 x-
' »..
', *
0.20
-0.74
''' "' '"""*"+
*
*
*
-1.83
-0.48
-0.38
-1.07
-2.42
0.78
*
control limit
control limit
-------
22/30 EMSL-LV Intercomparison Study: Performance
Radium-228
Lab Res. 1 Res. 2
SI 12.8 11.7
A f
m*
£0
SR - ,
SS 15.3 12.4
ST
SW 16.7 16.3
SY 18.4 18.6
SZ 16.6 18.3
T 14.0 12.7
TA 4.0 4.4
1 :" '""
TI 9.6 5.2
U 7.9 6.4
W 11.2 11.0
JL " " 2&2 , 24,4'
2
Exper. Rng anal
Res. 3 Sigma (R + SR)
12.8 0.64 0.186
' ; ' i '
$ ..
f
17.1 2.37 0.793
,
15.1 0.83 0.270
22.5 2.31 0.692
15.5 1.41 0.473
11.9 1.06 0.354
3.5 0.45 0.152
10.7 2.91 0.928
5.9 1.04 0.338
11.5 0.25 0.084
26 J ; 128 6.422
* ff
Evaluation-A, 14-Apr-1992
Normalized deviation
Average (grand-avg) (known)
12.43 -0.30 :0.78
'-
'
14.93 0.93 0.46
f
16.03 1.48 1.01
19.83 3.36 2.89
16.80 1.86 1.39
12.87 -0.09 -0.56
3.97 -4.49 -4.97
8.50 -2.25 -2.72
6.73 -3.12 -3.60
11.23 -0.90 -1.37
*5v>»Cr 6h£& ' v**w
i
Tag
- *
*
* ''
*
If
* :
'I'
X '
*
Data sorted by Laboratory Average
Average Tag
3.97 Ji
4.70 U
6.73 U
7.43 U
7.97
8.03
8.03
8.20
8.50
8.50
8.87
9.10
9.30
9.80
10.13
10.30
10.30
10.47
a No data submitted
0 = Insufficient data
Lab Average Tag
TA 10.63
OY 10.80
U 11.23
QU 11.43
RD 11.47
BA 11.67
A 11.67
AW 11.83
TI 11.87
BC 11.93
NI 12.00
SD 12.17
HL 12.20
PP 12.27
Q 12.43
RV 12.50
DZ 12.57
CK 12.63
TAG SYMBOLS
Lab Average Tag
P 12.67
CS 12.67
W 12.77
NH 12.87
GQ 12.97
JS 13.00
C 13.03
SC 13.13
BH 13.20
HP 13.23
JG 13.30
I 13.30
LT 13.50
BK 13.57
SI 13.60
RN 13.60
K 13.63
ER 13.80
ft a Above control
x a Determined to be an outlier !) = Below control
Lab
QZ
CG
DT
T
HK
NJ
RZ
OF
D3
S
NT
EO
AL
DB
PB
CE
PW
AJ
limit
limit
-------
Radium
EMSL-LV Intercompariflon Study: Performance
.228
Evaluation-A, 14- Apr- 1992 23
730
Data sorted by Laboratory Average
Average
13.87
13.90
13.97
14.03
14.20
14.33
14.40
14.50
14.77
14.93
15.00
15.03
%
10- - -
-6
° -6
Tag Lab
L
OX
AP
N
AI
J
RM
CA
MS
SS
PM
AF
Average Tag
15.07
15.10
15.23
15.27
15.30
15.33
15.33
15.57
15.90
16.03
16.07
16.17
16.43
Lab
HY
BM
NG
AK
JE
CJ
AZ
SF
AE
SW
ME
NO
BO
Average Tag
16.80
16.90
17.03
17.10
17.73
18.27
18.30
19.83
20.43 tT
21.53 ft
25.50 x
28.00 x
29.70 x
Lab
SZ
M
RF
JY
DE
FN
RC
SY
KZ
PV
X
QX
RG
Frequency distribution of responding labs(expected prec. vs known value)
T - - -M-
. . B_B I.
. ..-illmt»l-i-
T T !i ' A '
-4 exp.prec. -2 knSwn
value
_
+2
Frequency distribution of responding labs(std. dev.
-4 std. dev
s No data submitted
0 s Insufficient data
hall
IHli.il
i i
mean
value
TAG SYMBOLS
-i
. - .
exp. prec. +4
vs mean value)
_u
+2 std.'dev. *4
x s Determined to be an outlier
ft s Above control
!) s Below control
?
+6
I
+6
limit
limit
-------
EMSL-LV Intel-comparison Study: Performance Evaluation-A, 14-Apr-1992 24/30
Uranium (Natural) Statistical Summary 204 Participants
The known value of this nuclide is 4.0 pCi/1 with an expected precision of 3.0; the control limits
are 0.0 to 9.2; the warning regions are 0.0 to 0.5 and 7.5 to 9.2
98(48.0 %) Faded to respond .
6(2.9 %) Outliers
Statistic
, 98(48.0 %) Within all limits
Respondents
2(1 -O %) 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
6.01
8.79
77.19
146.20
50.24
0.23
4.17
4.17
0.02
Grand Avg 4.32
1.14
1.29
26.28
8.08
0.28
4.10
2.50
0.09
6(5.7 %) More than 3 norm. S.D.
2(1.9 %) Between 2 and 3 norm. S.D.
,87(82.1 %) Within 1 norm. S.D.
of known value
11(10.4 %) Between 1 and 2 norm. S.D.
-------
25 / 30 EMSL-LV Intel-comparison Study: Performance Evaluation-A, 14-Apr-1992
Uranium (Natural)
Lab Res. 1 Res. 2
A
AB
AE
AF
AI
AJ
AK
AL
AO
AP
AE
AtJ
AW
ASS*
BA
BC
BG
BH
BK
BI*
BM
BN
BO
B9
»W
C
CA
CE
CG
CJ
CK
cm
CO
cs
D
DB
DE
DJ
DM
DO
DT
=
0 m
4.6
'.'"'
2.4
5.0
4.6
1IJ
4.6
2.2
-
3.5
'
'
7.1
7*4 ,
4.4
3.9
1.6
3.0
4.0
16;4
5.2
6.0
3.5
'
4.4
3.8
3.8
4.5
3.8 .
2.9
4.2
3.5
4.2
4.0
4.5
" <
6.2
3.5
4.6
^
2.1
4.8
4.7
8.6
4.8
3.0
'
3.7
7.2
roj
4.7
3.9
1.6
3.4
4.2
12,6
5.3
6.0
3.6
4.1
3.9
3.5
4.6
3.8
2.9
4.4
s* *
3.7
4.2
3.0
4.7
4.8
3.7
Res. 3
4.6
', ' , *
2.1
4,3
4.6
1&J$
4.1
2.2
,
4.0
,"
7.2
72^
4.1
3.3
1.6
3.9
4.4
- -1&4'
5.8
4.0
4.4
'
,-
4.4
4.0
3.7
4.2
3.7
3.0
4.3
3.6
4.2
2.0
4.8
f
4.5
4.7
No data submitted
Insufficient data
X s
Exper.
Sigma
0.00
0.17
0.36
0.06
1.8&
0.36
0.46
0.25
*
'
0.06
0.61
0.30
0.35
0.00
0.45
0.20
2.19
0.32
1.15
0.49
;
0.17
0.10
0.15
0.21
0.06
0.06
0.10
0.10
0.00
1.00
0.15
0.91
0.64
Rng anal
(R + SR) Average
0.000
0.059
0.138
0.020
0.512
0.138
0.158
0.098
0.020
0.236
0.118
0.118
0.000
0.177
0.079
0.74$
0.118
0.394
0.177
0.059
0.039
0.059
0.079
0.020
0.020
0.039
0.039
0.000
0.394
0.059
0.335
0.236
4.60
-",
2.20
4.70
4.63
I0,if>
4.50
2.47
,
3.73
f
7.17
7U&
4.40
3.70
1.60
3.43
4.20
1&13
5.43
5.33
3.83
'
4.30
3.90
3.67
4.43
3.77
2.93
4.30
3.60
4.20
3.00
4.67
5.17
3.97
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
0.16
' A
-1.23
0.22
0.18
3J4
0.10
-1.07
-0.34
'
f f
1.64
38.69
0.04
-0.36
-1.57
-0.51
-0.07
8J4-- ,
0.64
0.58
-0.28
-0.01
-0.24
-0.38
0.06
-0.32
-0.80
,- - "' ,
-0.01
-0.42
-0.07
-0.76
0.20
0.49
-0.21
IT s Above
U 3 Below
0.35
'''/' -»
-1.04
0.40
0.37
3.52 x
0.29
-0.89
»
-0.15
*
*
1.83
3&$7 x
0.23
-0.17
-1.39
-0.33
0.12
&4& X-
0.83
0.77
-0.10
«
»
0.17
-0.06
-0.19
0.25
-0.13
-0.62
0.17
-0.23
0.12
-0.58
0.38
*
.
0.67
-0.02
control limit
control limit
-------
EMSL-LV Intel-comparison Study: Performance Evaluation- A, 14- Apr- 1992 26 / 30
Uranium (Natural)
Lab Res. 1 Res. 2
DZ
E
EH
EK
EL
BO
ER
EX
FE
FJ
FN
FW
FZ
GI
GQ
Cfif
CIV
GZ
HH
ffl
HK
HL
HN
HP
'S#
HY
I
IT '
A*/-
ID
IE
UJ
J
JE
JH
ON
JQ
JS
4.9
4.5
' ' "t '' -, -'
' / '
*.*'- '"'"'''/'/;
3.9
; J'
3.6
7.1
4.3
' ,f,- . j .
'
6.9
^ *" '
4.4
' '' ' ,
'
3.9
, ',
,
4.0
5.0
/-
4.0
- '/' , '" , ' '
3.9
3.6
" '*'-'- -i 'V^'''
4.5
4.0
4.0
4.2
'
>
3.9
4.8
4.3
x _,
" "
"' " -,,'
3.7
""'
3.8
7.2
4.4
5.3
-
5.1
*
3.6
"/
4.0
4.4
,s, ^ ^
3.6
:-v/ &',
3.9
4.2
^ "^
4.3
4.0
4.0
4.9
3.9
Res. 3
5.2
4.2
'',
* * ''
' '>',"'
4.6
' ,
3.6
7.3
4.3
, *
6.4
**_,
5.5
3.8
'
jj. ,
4.0
3.1
'* ', "
3.9
^L's* '
4.3
3.7
& "'
3.1
3.0
4.1
4.1
3.9
= No data submitted
0 a
Insufficient data
X S
Exper.
Sigma
0.21
0.15
'
'
f S
0.47
'' , '
0.12
0.10
0.06
'
0.82
0.56
f
0.15
0.00
0.97
'
0.21
0.23
0.32
0.76
0.58
0.06
0.44
0.00
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.079
0.059
,'"' ,
' ' , , ^ ' ' ''
' / ' ''
0.177
', " ' " /_
0.039
0.039
0.020
'
0.315
'
0.217
j
>
0.059
,
0.000
0.374
' ' '
0.079
- ,' '-' : %"' , " >
0.079
0.118
0.276
0.197
0.020
0.158
0.000
4.97
4.33
'', ' ' '
' , ,'
4.07
,
3.67
7.20
4.33
X
;
6.20
-
5.00
', "
3.77
-
> ,
4.00
4.17
' ' - '
3.83
*;> ' "
4.03
3.83
3.97
3.67
4.03
4.40
3.90
TAG SYMBOLS
Determined
to be an outlier
0.37
0.01
* ' .'
f
-0.15
', '
-0.38
1.66
0.01
' ,
1.08
0.39
,
-0.32
'
"
-0.19
-0.09
, '
-0.28
/, f' t '
-0.17
-0.28
-0.21
-0.38
-0.17
0.04
-0.24
ft s Above
11 s Below
0.56
0.19
'* * ,
' " ',
*
' ' ' * '
0.04
t
-0.19
', *
1.85
0.19
r »
*
1.27
.
0.58
*
»"';
-0.13
*
*
0.00
0.10
*
-0.10
, ,"
0.02
-0.10
*
-0.02
-0.19
0.02
0.23
*
*
-0.06
control limit
control limit
-------
27 /
30 EM8L-LV Intercomparison Study: Performance Evaluation-A, 14- Apr- 1992
Uranium (Natural)
Exper. Rng anal Normalized deviation
Lab Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known)
JY
K
KC
"HE
KF
KM
irr
KX
KZ
L
1M
LO
LM
Lit
i/r
LX
M
MA
ME
UN
MO
MP
MQ
MS
MV
MY
N
NA
NO
NH
NI
NJ
NK
NO
NT
VM
OF
OL
OM
OS
ox
OY
11*
=
0
*--
2.3 2.1
3.8 3.8
f
s
*
%
4.4 4.6
.. s ,
'
'
,
4.1 3.7
*
2.3 2.5
'
3.7 4.7
5.0 5.0
1&$ 324
5.0 5.1
1.8 1.7
7.4 6.0
3.9 3.6
4.9 5.0
4.4 4.2
5.2 5.9
'
3.4 4.1
4.6 5.0
- 4M:i ' 3&&.L
No data submitted
Insufficient data
2.4 0.15
3.6 0.12
, - .
* *
'
4.6 0.12
-
f
,
4.1 0.23
-
'
'
,
2.5 0.12
.
5.7 1.00
5.0 0.00
W& , ,$M
5.2 0.10
1.9 0.10
5.8 0.87
3.6 0.17
5.3 0.21
4.0 0.20
5.3 0.38
4.1 0.40
4.6 0.23
04,1 1L42
0.059 2.27
0.039 3.73
,
f ., *
'
, , ''
', ,
0.039 4.53
'
f
f
-
*
0.079 3.97
0.039 2.43
,
0.394 4.70
0.000 5.00
-I tjiK to on
l,i>4o l^t>7
0.039 5.10
0.039 1.80
0.315 6.40
0.059 3.70
0.079 5.07
0.079 4.20
0.138 5.47
0.138 3.87
0.079 4.73
7,600 3&J0 1
TAG SYMBOLS
x = Determined to
be an outlier
-1.19
-0.34
,
'
f . '. *
..
'
0.12
_,
-
'
,,
-0.21
-1.09
0.22
0.39
8.28
0.45
-1.46
1.20
-0.36
0.43
-0.07
0.66
-0.26
0.24
18.06
ft s Above
Ji 5 Below
-1.00
-0.15
'
0.31
*
-.
-0.02
-0.90
,
0.40
0.58
&47
0.64
-1.27
1.39
-0.17
0.62
0.12
0.85
-0.08
0.42
1&24
control
control
Tag
«
*
* ^
«
»
- «
*-
*^
*
#
»
«-
*
*
*
*
»
» ;
« i
»
*
X
.
*
*
*
x i
limit
limit
-------
EMSL-LV Intercomparison Study: Performance Evaluation- A, 14-Apr-1992 28/30
Uranium (Natural)
Lab
PB
Res. 1 Res. 2
3.5
3.5
Res. 3
3.5
Exper.
Sigma
0.00
Rnganal
(R + SR) Average
0.000
3.50
^ , '' ''" , '?';/ ''"';''/" ',J" " ' ''<, " '' ' '>'>'/ '
w
"Fd
Wl*
PM
pp
PQ
PI?
PV
PW
J*Y
Q
w
QQ
QT
QU
QW
QX
QY
QZ
RC
RD
RE
RG
IWT
RK
RM
RN
f
'"JRO''
RP
RR
RS
»IT
RV
RZ
S
sc
SD
SF
SG
', ' '
r f . s / ' "
r f '
3.9
5.1
3.9
/
4.4
6.5
£ j ' f
5.2
,//' ;; v
3.3
, -
5.7
'
6.4
4.8
5.6
4.8
3.7
'
4.5
J - , ' *
',
4.7
3.5
* ' f ' fsf f
* ' f ^ *££.**
4.1
3.9
- ''>",;-"«
6.1
3.7
3.7
4.2
4.0
-t
f
' ,
" '
3.9
5.0
3.6
'
'
4.5
8.0
6.4
3.6
'
5.7
8.5
4.8
5.6
4.3
3.6
4.4
'
' <;
3.3
3.2
f ff
" * f.
4.1
3.9
7.9
3.3
3.7
4.2
3.9
"' , ,
' - , ','', >'
' f- S '/,
3.9
5.3
4.0
, -" /
f f '
3.6
6.9
,
7.5
3.9
' ;
4.9
,
9.4
4.8
5.6
5.1
3.7
; '
4.4
' ' "' / ';' '
'/.;-, ; Y /
4.7
3.3
'',''''/'
4.1
4.1
' "
i
6.1
3.4
3.7
4.2
4.0
= No data submitted
0
Insufficient data
X s
'
* - ,'
0.00
0.15
0.21
>i
0.49
0.78
'
1.15
0.30
,
0.46
'
1.54
0.00
0.00
0.40
0.06
0.06
'
0.81
0.15
f
'f *
0.00
0.12
1.04
0.21
0.00
0.00
0.06
,
' -A , / '
' '" ,
0.000
0.059
0.079
f ff
0.177
0.295
*
0.453
-
0.118
0.158
*
0.591
0.000
0.000
0.158
0.020
0.020
,,
'
0.276
0.059
f f f f
0.000
0.039
0.354
0.079
0.000
0.000
0.020
'
'- " '
// ., -'',; ,'"'
3.90
5.13
3.83
' '
4.17
7.13
''
6.37
'"'" ;
3.60
_,
5.43
t
8.10
4.80
5.60
4.73
3.67
4.43
'
;
4.23
3.33
/
'
4.10
3.97
6.70
3.47
3.70
4.20
3.97
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
-0.48
*s f "*** VffS fff' ffff ff f
* f" f f
f f ^ ' f ' ' ff ^
" ''/''}';*$'{'"/ *
-0.24
0.47
-0.28
-' ,
-0.09
1.62
1.18
V ,
-0.42
'
0.64
2.18
0.28
0.74
0.24
-0.38
0.06
f
f
-0.05
-0.57
f f ff
' f , *
-0.13
-0.21
1.37
-0.49
-0.36
-0.07
-0.21
It s Above
li = Below
-0.29
f / '
,' ''
' , *
./,, ff -,< -^, ,
-0.06
0.65
-0.10
*
0.10
1.81
*
1.37
*
-0.23
*
0.83
*
2.37
0.46
0.92
0.42
-0.19
*;
0.25
»
,*
0.13
-0.38
0.06
-0.02
*
1.56
*
-0.31
-0.17
0.12
-0.02
control limit
control limit
-------
29/30
EMSL-LV Intercomparison
Uranium (Natural)
Lab Res. 1 Res. 2
SI
SL
SN *
BO
en
ss
ST
SW
sx
SY
82
T
TA
,10
Tfi
TI
U
W
X
Z
5.1
f
3.9
3.5
3.9
3.6
53.2
3.8
3.9
s
4.3
4.0
4.0
3.0
7.8
5.5
,
' ' ' ' I '
4.1
3.8
3.9
2.7
56.8
4.0
3.8
*
4.9
4.8
4.1
3.1
7.6
Res. 3
5.6
3.9
3.9
4.2
3.5
52.6
4.5
4.0
,
4.4
3.5
4.1
3.9
7.7
Study: Performance
Exper.
Sigma
0.26
:...
-
*
0.12
0.21
0.17
'
0.49
l,7#
0.36
0.10
', ..
'
0.32
0.66
0.06
0.49
0.10
Rng anal
(R + SKf
0.098
, ,
0.039
0.079
0.059
0.177
0.630
0.138
0.039
-
0.118
0.256
0.020
0.177
0.039
Evaluation-A, 14-Apr-1992
Average
5.40
-'
*
'
3.97
3.73
4.00
..
3.27
88JT
4.10
3.90
-
'
4.53
4.10
4.07
3.33
7.70
Normalized
(grand-avg)
0.62
,
'
-0.21
-0.34
-0.19
-0.61
28.60
-0.13
-0.24
0.12
-0.13
-0.15
-0.57
1.95
deviation
(known)
0.81
, ''
-" , ;
'
-0.02
-0.15
0.00
,
-0.42
%83$
0.06
-0.06
;.. s ..,
,
0.31
0.06
0.04
-0.38
2.14
Tag
.
«
*- i
*
«
»
x :,,:
*
* !
Data sorted by Laboratory Average
Average
1.60
1.80
2.20
2.27
2.43
2.47
2.93
3.00
3.27
3.33
3.33
3.43
3.47
3.50
3.60
3.60
3.67
3.67
1
^
Lab
BG
NI
AE
JY
MS
AL
CK
DB
SY
X
RN
BH
S
PB
QQ
cs
RD
IE
Average
s No data submitted
0 = Insufficient
data
X 3
3.67
3.67
3.70
3.70
3.70
3.73
3.73
3.73
3.77
3.77
3.83
3.83
3.83
3.83
3.87
3.90
3.90
3.90
Tag
Lab
FE
CE
SC
NK
BC
ST
K
AP
GZ
CJ
PQ
I
HP
BO
OS
TA
CA
PM
Average Tag
TAG SYMBOLS
Determined to be an outlier
3.90
3.97
3.97
3.97
3.97
3.97
3.97
4.00
4.00
4.03
4.03
4.07
4.07
4.10
4.10
4.10
4.17
4.17
ft s Above control
li s Below control
Lab
JS
ME
DT
SS
SF
RR
ID
SW
HK
J
HY
W
ER
U
T
RP
PV
HL
limit
limit
-------
EMSL-LV Intercomparison Study: Performance Evaluation-A, 14-Apr-1992 30 / 30
Uranium (Natural)
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab | Average
Tag
Lab
4.20
4.20
4.20
4.20
4.23
4.30
4.30
4.33
4.33
4.40
4.40
4.43
4.43
4.50
4.53
4.53
4.60
SD
D
NT
BK
RM
CO
C
FN
E
JE
BA
RG
CG
AK
TI
L
A
4.63
4.67
4.70
4.70
4.73
4.73
4.80
4.97
5.00
5.00
5.07
5.10
5.13
5.17
5.33
5.40
5.43
AI
DE
N
AF
OY
RC
QY
DZ
NA
GQ
NO
NH
PP
DO
BN
SI
QU
5.43
5.47
5.60
6.20
6.37
6.40
6.70
7.13
7.17
7.20
7.70
8.10
10.10
15.13
18.67
35.60
53.87
71.33
x
x
X
X
X
X
BM
OF
QZ
FZ
Q
NJ
RV
PW
AW
FJ
Z
QX
AJ
BL
NG
P
SZ
AZ
Frequency distribution of responding labs(expected prec. vs known value)
L -----------
II.
exp. prec.
known
value
*2 exp. prec.
Frequency distribution of responding labs(std. dev. vs mean value)
20
10-
₯ T
-6
std. dev. -2
mean
value
+2 std. dev. +4
& No data submitted
0 3 Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT s Above control limit
li s Below control limit
------- |