Gamma in Water Intercomparison Study: a Statistical Evaluation of the February 14, 1992 Data


EPA
           United States
           Environmental Protection
           Agency
             Environmental Monitoring
             Systems Laboratory
             P.O. Box 93478
             Las Vegas NV 89193-3478
EPA 600/R-92/075
April 1992
           Research and Development
Gamma in Water
Intercomparison Study

A Statistical Evaluation of the
February 14, 1992 Data
                                            5168GR92NRD-6

-------
             Gamma in Water
          Intercomparison Study
            February 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 Gamma in Water; February 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: Gamma in Water, 14-Feb-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
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 Intercomparison Study:  Gamma in Water, 14-Feb-1992
                                   2/43
Cobalt-60                            Statistical Summary                       176 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 5.0; the control limits
are 31.3 to 48.7; the warning regions are 31.3 to 34.2 and 45.8 to 48.7
18(10.2 %) Failed to respond
8(4.5 %) Outliers '
4(2.3 %) Out of control *
     but not an outlier


         Statistic
               . 132(75.O %) Within all limits
Respondents
           • 14(8.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
     70.40
    336.82
 113448.17
    478.43
     76.00
      0.09
     40.00
      0.00
      0.00
             Grand Avg 40.08
                          3.38
                         11.40
                          8.42
                          0.19
                          0.02
                         40.00
                          0.00
                          0.00
13(8.2 %) More than 3 norm. S.D. -
13(8.2 %) Between 2 and 3 norm. S.D.
           , 1O7(67.7 %) Within 1 norm. S.D.
                           of known value
25(15.8 %)
                     en 1 and 2 norm. S.D.

-------
3/43 EMSL-LV Intel-comparison Study : Gamma in Water, 14-Feb-1992
Cobalt>60
Lab Res. 1
A
AB
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
CC
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DL
DM
40.0
43.0
37.0
41.0
39.0
42.0
40.0
27.0
50.0
43.0
41.0
41.0
39.0

49.0
38.0
45.0
23.0
43.0
35.0
42.0
40.0
38.0
43.0
40.0
40.0
40.0
38.0
32.0
47.0
41.0
35.0
39.0
42.0
41.0
39.0
45.0
42.0
40.0
40.0
48.0
36.0
37.0
40.0
Res. 2
39.0
44.0
41.0
40.0
40.0
44.0
37.0
34.0
47.0
42.0
38.0
42.0
42.0

47.0
40.0
47.0
39.0
40.0
36.0
43.0
38.0
40.0
51.0
37.0
40.0
39.0
43.0
32.0
47.0
36.0
34.0
45.0
42.0
42.0
41.0
43.0
42.0
34.0
40.0
44.0
36.0
37.0
41.0
Res. 3
40.0
40.0
39.0
40.0
39.0
42.0
38.0
31.0
50.0
41.0
37.0
41.0
37.0

50.0
40.0
46.0
41.0
41.0
36.0
42.0
38.0
39.0
46.0
40.0
40.0
40.0
40.0
34.0
48.0
37.0
41.0
38.0
42.0
44.0
39.0
40.0
42.0
39.0
41.0
46.0
36.0
38.0
38.0
• = No data submitted
0 =
Insufficient
data
X S
Exper.
Sigma
0.58
2.08
2.00
0.58
0.58
1.15
1.53
3.51
1.73
1.00
2.08
0.58
2.52

1.53
1.15
1.00
9.87
1.53
0.58
0.58
1.15
1.00
4.04
1.73
0.00
0.58
2.52
1.15
0.58
2.65
3.79
3.79
0.00
1.53
1.15
2.52
0.00
3.21
0.58
2.00
0.00
0.58
1.53

Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.118
0.473
0.473
0.118
0.118
0.236
0.354
0.827
0.354
0.236
0.473
0.118
0.591

0.354
0.236
0.236
3.146
0.354
0.118
0.118
0.236
0.236
0.945
0.354
0.000
0.118
0.591
0.236
0.118
0.591
0.827
0.827
0.000
0.354
0.236
0.591
0.000
0.709
0.118
0.473
0.000
0.118
0.354
39.67
42.33
39.00
40.33
39.33
42.67
38.33
30.67
49.00
42.00
38.67
41.33
39.33

48.67
39.33
46.00
34.33
41.33
35.67
42.33
38.67
39.00
46.67
39.00
40.00
39.67
40.33
32.67
47.33
38.00
36.67
40.67
42.00
42.33
39.67
42.67
42.00
37.67
40.33
46.00
36.00
37.33
39.67
TAG SYMBOLS
Determined
to be an
outlier
-0.14
0.78
-0.37
0.09
-0.26
0.90
-0.60
-3.26
3.09
0.67
-0.49
0.43
-0.26
..
2.98
-0.26
2.05
-1.99
0.43
-1.53
0.78
-0.49
-0.37
2.28
-0.37
-0.03
-0.14
0.09
-2.57
2.51
-0.72
-1.18
0.20
0.67
0.78
-0.14
0.90
0.67
-0.84
0.09
2.05
-1.41
-0.95
-0.14
ft s Above
•H s Below
-0.12
0.81
-0.35
0.12
-0.23
0.92
-0.58
-3.23 11
3.12 ft
0.69
-0.46
0.46
-0.23
* \
3.00
-0.23
2.08
-1.96
0.46
-1.50
0.81
-0.46
-0.35
2.31
-0.35
0.00
-0.12
0.12
-2.54
2.54
-0.69
-1.15
0.23
0.69
0.81
-0.12
0.92
0.69
-0.81
0.12
2.08
-1.39
-0.92
-0.12
control limit
control limit

-------

EMSL-LV Intercomparison Study: Gamma in Water, 14-Feb-1992
Cobalt-60
Lab Res. 1
DO
DR
DT
JX&
E
EA
EB
EH
EL
. EN:
EW
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
FTP!
HI
HJ
HK
HL
HP
-mi
i
1C
n
IU
j
JE
JG
JR
JS
K
KF
KH
KL
KM
KX
L
• =
0 a
43.0
39.0
39.0
'
42.0
38.0
40.0
41.0
38.0
40.0
47.0
35.0
39.0
45.0
41.0
42.0
45.0
38.0
38.0
39.0
37.0
38.0
43.0
40.0
40.0
31.0
42.0
41.0
37.0
42.0
40.0
42.0
f ' s f
40.0
29.0
43.0
34.0

39.0
41.0
40.0
40.0
Res. 2
39.0
43.0
37.0
-
42.0
39.0
40.0
38.0
40.0
39.0
45.0
30.0
38.0
41.0
42.0
39.0
43.0
37.0
34.0
40.0
35.0
42.0
44.0
41.0
40.0
37.0
41.0
39.0
37.0
40.0
39.0
40.0
'-,//-„ , -'
41.0
34.0
44.0
39.0
-•
38.0
39.0
43.0
37.0
Res. 3
40.0
44.0
40.0
'/ '' '' '
40.0
38.0
40.0
39.0
37.0
41.0
46.0
32.0
34.0
48.0
41.0
42.0
44.0
37.0
39.0
42.0
36.0
38.0
46.0
40.0
40.0
31.0
•* *V '
42.0
42.0
36.0
40.0
39.0
40.0
- ,'*'"-
42.0
30.0
43.0
45.0

39.0
38.0
39.0
40.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
2.08
2.65
1.53
' , '
1.15
0.58
0.00
1.53
1.53
, , 00.36
1.00
1.00
2.52
2.65
3.51
0.58
1.73
1.00
0.58
2.65
1.53
1.00
2.31
1.53
0.58
0.00
3.46
0.58
1.53
0.58
1.15
0.58
1.15

1.00
2.65
0.58
5.51

0.58
1.53
2.08
1.73
4/43
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.473
0.591
0.354
/
0.236
0.118
0.000
0.354
0.354
12.696
0.236
0.236
0.591
0.591
0.827
0.118
0.354
0.236
0.118
0.591
0.354
0.236
0.473
0.354
0.118
0.000
0.709
0.118
0.354
0.118
0.236
0.118
0.236

0.236
0.591
0.118
1.570

0.118
0.354
0.473
0.354
40.67
42.00
38.67
;,- ' ' '
41.33
38.33
40.00
39.33
38.33
40.00
46.00
32.33
37.00
44.67
41.33
41.00
44.00
37.33
37.00
40.33
36.00
39.33
44.33
40.33
40.00
33.00
41.67
40.67
36.67
40.67
39.33
40.67
'
41.00
31.00
43.33
39.33

38.67
39.33
40.67
39.00
TAG SYMBOLS
Determined
to be an
outlier
0.20
0.67
-0.49
' <, ''/"
0.43
-0.60
-0.03
-0.26
0.23
0.69
-0.46
*
0.46
-0.58
0.00
-0.23
-0.60 -0.58
1460.6? 1460.70 x
-0.03
2.05
-2.68
-1.07
1.59
0.43
0.32
1.36
-0.95
-1.07
0.09
-1.41
-0.26
1.47
0.09
-0.03
-2.45
0.55
0.20
-1.18
0.20
-0.26
0.20

0.32
-3.14
1.13
-0.26

-0.49
-0.26
0.20
-0.37
ft s Above
II s Below
0.00
2.08
-2.66
-1.04
1.62
0.46
0.35
1.39
-0.92
-1.04
0.12
-1.39
-0.23
1.50
0.12
0.00
-2.42
0.58
0.23
-1.15
0.23
-0.23
0.23
*
0.35
-3.12 U
1.15
-0.23
•
-0.46
-0.23
0.23
-0.35
control limit
control limit

-------
5/43 EMSL-LV Intel-comparison Study: Gamma in Water, 14-Feb-1992

[ Cobalt-60
Lab
LA
LE
LF
IM
LR
LT
M
MA
ME
MN
MP
MQ
MS
MT
MV
N
KB
NH
NI
NJ
HK
3*0
NP
NZ
O
OA
OB
OL
OM
OO
OT
OZ
PB
PC
PD
PM
PP
PQ
PV
PW
PX
Q
QB
QJ
QK
Res. 1
41.0
62.0
44.0

16.0
35.0
36.0
40.0
40.0

39.0
38.0
40.0
36.0

41.0
360.0
40.0
46.0
39.0


38.0
51.0
42.0
39.0
39.0
41.0
42.0
40.0
40.0
'f8J>'
39.0
1&0
43.0
44.0
45.0
40.0
46.0
39.0
39.0
37.0
41.0
42.0
33.0
Res. 2
39.0
68.0
38.0

20.0
36.0
37.0
40.0
38.0
f
40.0
38.0
43.0
35.0

40.0
3S3.0
40.0
47.0
40.0
f

46.0
45.0
42.0
38.0
38.0
40.0
38.0
41.0
42.0
- 70.0
38.0
1*4
42.0
42.0
47.0
39.0
45.0
36.0
36.0
38.0
41.0
41.0
33.0
Res. 3
44.0
', 810, '
40.0
-
17.0
35.0
39.0
41.0
41.0
'
42.0
39.0
39.0
36.0
f f '
40.0
364,0
41.0
45.0
38.0
-
'
39.0
46.0
42.0
39.0
39.0
40.0
40.0
38.0
45.0
' tl&0
38.0
-' 144
32.0
49.0
42.0
44.0
45.0
37.0
39.0
40.0
40.0
43.0
33.0
• = No data submitted
0 a
Insufficient
data
X S
Exper.
Sigma
2.52
', •'&&
3.06
',/>
•- - 2J&
0.58
1.53
0.58
1.53

1.53
0.58
2.08
0.58
f •* •.
0.58
tn&'
0.58
1.00
1.00
' f

4.36
3.21
0.00
0.58
0.58
0.58
2.00
1.53
2.52
""-'"' /1.1S-"
0.58
-,. ,- OM -
6.08
3.61
2.52
2.65
0.58
1.53
1.73
1.53
0.58
1.00
0.00
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.591
0827
0.709
/
0,581
0.118
0.354
0.118
0.354

0.354
0.118
0.473
0.118

0.118
0478
0.118
0.236
0.236
-

0.945
0.709
0.000
0.118
0.118
0.118
0.473
0.354
0.591
' 0.&3&
0.118
'ail*
1.570
0.827
0.591
0.591
0.118
0.354
0.354
0.354
0.118
0.236
0.000
41.33
- ' ** torn- .. ..
40.67
., ,
"17J3-
35.33
37.33
40.33
39.67
'
40.33
38.33
40.67
35.67
-
40.33
0.43
,.&!?
0.20
^ '
Jt&&
-1.64
-0.95
0.09
-0.14

0.09
-0.60
0.20
-1.53
-
0.09
0.46
SJ0 ' X 'I
0.23
»
-7J5 x
-1.62
-0.92
0.12
-0.12
»
0.12
-0.58
0.23
-1.50
* i
0.12
•»gVjCjVy3 jLjiL JLviCSv' JL JL JtliufQ *^
40.33
46.00
39.00
f '

41.00
47.33
42.00
38.67
38.67
40.33
40.00
39.67
42.33
" , ,7t*3S
38.33
' 3ZM '
39.00
45.00
44.67
41.00
45.33
37.33
38.00
38.33
40.67
42.00
33.00
TAG SYMBOLS
Determined
to be an
outlier
0.09
2.05
-0.37


0.32
2.51
0.67
-0.49
-0.49
0.09
-0.03
-0.14
0.78
!&s!<
-0.60
-9^6
-0.37
1.71
1.59
0.32
1.82
-0.95
-0.72
-0.60
0.20
0.67
-2.45
ft = Above
11 s Below
0.12
2.08
-0.35
« :
*
0.35
2.54
0.69
-0.46
-0.46
0.12
0.00
-0.12
0.81
12,03 x
-0.58
-9424. X I
-0.35
1.73
1.62
0.35
1.85
-0.92
-0.69
-0.58
0.23
0.69
-2.42
control limit
control limit

-------
EMSL-LV Intercomparison Study: Gamma
Cobalt-60
Lab Res. 1 Res. 2
QL 40.0 40.0
QM 43.0 39.0
Qd - - -": ;
QP 43.0 44.0
QT 35.0 31.0
^ f f fS f f f

QZ 41.0 39.0
R 40.0 43.0
RH 37.0 38.0
RK 40.0 41.0
RN 38.0 42.0
RO 42.0 43.0
RQ 43.0 43.0
RR 40.0 41.0
RS " -:' ''"' '
RU 38.0 35.0
RY 45.0 45.0
RZ 36.0 35.0
S 38.0 39.0
flUk ' 22,0 ' mO ,
SC 44.0 42.0
SD '' < ,
SF 37.0 36.0
SH •• •• '« •••• , ••••: ' ' ••
SI 45.0 47.0
SK 37.0 41.0
SM 42.0 44.0
SN 41.0 40.0
SR 54.0 47.0
SS 38.0 41.0
ST 38.0 38.0
Stl " 299.0 388.0
SV 42.0 45.0
SW - " ;* -
SY 31.0 32.0
T 37.0 36.0
U 36.0 40.0
W 37.0 38.0
X 43.0 43.0
Y 39.0 37.0
Z 40.0 40.0

Exper. Rng anal
Res. 3 Sigma (R + SR)
43.0 1.73 0.354
46.0 3.51 0.827
' ' " " ' ' ,,''",
43.0 0.58 0.118
36.0 ,_2.66 0.591
" f $f * f f *'
41.0 1.16 0.236
39.0 2.08 0.473
39.0 1.00 0.236
37.0 2.08 0.473
39.0 2.08 0.473
41.0 1.00 0.236
43.0 0.00 0.000
38.0 1.53 0.354
ff * '
38.0 1.73 0.354
47.0 1.15 0.236
36.0 0.58 0.118
40.0 1.00 0.236
'24*0 ' * 4*73 1&1S0
40.0 2.00 0.473
' ' ' ', ' '
40.0 2.08 0.473
* •'•'' ',,„•' "•' ,"•' •'•'•' ' ,
45.0 1.15 0.236
37.0 2.31 0.473
41.0 1.53 0.354
39.0 1.00 0.236
48.0 3.79 0.827
40.0 1.53 0.354
39.0 0.58 0.118
'->">' '%&&' '"' f.79 6J6&1
40.0 2.52 0.591
35.0 2.08 0.473
38.0 1.00 0.236
39.0 2.08 0.473 •
38.0 0.58 0.118
45.0 1.15 0.236
39.0 1.15 0.236
39.0 0.58 0.118
in Water,

Average
41.00
42.67
43.33
34.00
•" ff S' $,
40.33
40.67
38.00
39.33
39.67
42.00
43.00
39.67
' '
37.00
45.67
35.67
39.00
28,38
42.00
'
37.67
"'"' ,
45.67
38.33
42.33
40.00
49.67
39.67
38.33
; 306.67
42.33
32.67
37.00
38.33
37.67
43.67
38.33
39.67
14-Feb-1992 6 / 43
^
Normalized deviation
(grand-avg) (known) Tag
0.32 0.35
0.90 0.92
,'-*, *'''',, , •
1.13 1.15
-2.11 -2.08
'f>, , " ''' ', *
0.09 0.12
0.20 0.23
-0.72 -0.69
-0.26 -0.23
-0.14 -0.12
0.67 0.69
1.01 1.04
-0.14 -0.12
*
-1.07 -1.04
1.94 1.96
-1.53 -1.50
-0.37 -0.35
•&M »6,S1 X
0.67 0.69
*
-0.84 -0.81
•• ' »
1.94 1.96
-0.60 -0.58
0.78 0.81
-0.03 0.00
3.32 3.35 It
-0.14 -0.12
-0.60 -0.58
&&£? 9&30 x
0.78 0.81
*
-2.57 -2.54
-1.07 -1.04
-0.60 -0.58
-0.84 -0.81
1.24 1.27
-0.60 -0.58
-0.14 -0.12
Data sorted by Laboratory Average
Average Tag
13.33 x
• s No data submitted
0 = Insufficient data
Lab Average Tag
PC 17.33 x
TAG SYMBOLS
Lab Average Tag Lab
LK

x = Determined to be an outlier
20.33 x SA
ft s Above control limit
•!!• s Below control limit

-------
7/43
Cobalt-60
EMSL-LV Intel-comparison Study: Gamma

in Water, 14-Feb-1992



Data sorted by Laboratory Average
Average
30.67
31.00
32.33
32.67
32.67
33.00
33.00
34.00
34.33
35.33
35.67
35.67
35.67
36.00
36.00
36.67
36.67
37.00
37.00
37.00
37.00
37.33
37.33
37.33
37.33
37.67
37.67
37.67
38.00
38.00
38.00
38.33
38.33
38.33
38.33
38.33
38.33
38.33
38.33
38.33
38.33
38.67
38.67
38.67
• s No data
Tag Lab
U AL
U JS
EZ
SY
cc
QK
HP
QT
BG
LT
RZ
MT
BI
HE
DH
n
CK
T
RU
GI
FE
PW
M
GE
DL
W
SF
PD
RH
PX
CJ
Y
U
ST
SK
Q
PB
MQ
EL
EA
AK
OB
OA
KL
Average Tag
38.67
38.67
38.67
39.00
39.00
39.00
39.00
39.00
39.00
39.00
39.33
39.33
39.33
39.33
39.33
39.33
39.33
39.33
39.33
39.67
39.67
39.67
39.67
39.67
39.67
39.67
39.67
39.67
39.67
40.00
40.00
40.00
40.00
40.00
40.00
40.33
40.33
40.33
40.33
40.33
40.33
40.33
40.33
40.33
submitted TAG SYMBOLS
Lab
DT
BL
AU
S
PD
NJ
L
BO
BM
AE
RK
KM
KF
j
ffl
EH
BB
AY
AI
Z
SS
RR
RN
00
ME
DM
CS
C
A
SN
OM
HL
EW
EB
BW
QZ
OL
NH
N
MP
MA
HK
GL
DE
Average Tag
40.33
40.33
40.67
40.67
40.67
40.67
40.67
40.67
40.67
40.67
40.67
40.67
41.00
41.00
41.00
41.00
41.00
41.33
41.33
41.33
41.33
41.33
41.67
42.00
42.00
42.00
42.00
42.00
42.00
42.00
42.00
42.33
42.33
42.33
42.33
42.33
42.33
42.67
42.67
42.67
43.00
43.33
43.33
43.67
ft s Above control
0 = Insufficient data x = Determined to be an outlier U = Below control
Lab
CA
AF
R
QB
MS
LF
KX
JE.
IU
1C
DO
CO
QL
PQ
NP
JR
FU
LA
FL
E
BH
AW
I
SC
RO
QJ
o
DR
D
CP
AP
sv
SM
OT
CQ
BK
AB
QM
CX
AJ
RQ
QP
K
X
limit
limit

-------
            EMSL-LV Intel-comparison Study: Gamma in Water, 14-Feb-1992
                                                                                8/43
Cobalt-60
Average
            Tag
  Data sorted by Laboratory Average
Lab  Average       Tag       Lab   Average
                   Tag
                       Lab
  44.00
  44.33
  44.67
  44.67
  45.00
  45.33
  45.67
                       FZ
                       HJ
                       PP
                       FJ
                       PM
                       PV
                       SI
        45.67
        46.00
        46.00
        46.00
        46.00
        46.67
        47.33
        47.33
RY
NI
EX
DG
BC
BN
NZ
CE
  48.67
  49.00
  49.67
  63.67
  77.33
 300.67
 362.33
4256.67
ft
fT
x
x
x
x
x
BA
AN
SR
LE
OZ
su
NB
EN
%

10
            Frequency distribution of responding labs(expected prec. vs known value)
                                 .-••Imllli^--
     A
     -*
                 A
                 "4
                     exp.prec.
                                +2
                                                          exp. prec.
                            +6
 %

 10
                                         value

              Frequency distribution of responding labs(std. dev. vs mean value)
     -*
                    stddev.   -2
                                +2  std.dev.  *«
                                          value
• s No data submitted
0 = Insufficient data
                                   TAG SYMBOLS
                                Determined to be an outlier
                                          It a Above control limit
                                          II s Below control limit

-------
             EMSL-LV Intel-comparison Study: Gamma in Water, 14-Feb-1992
                                   9/43
Zinc-65
                         176 Participants
                                     Statistical Summary
The known value of this nuclide is 148.0 pCi/1 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
19(10.8 %) Failed to respond •-..-
11 (6.3 %) Outliers '
1 (O.6 %) Out of control •
     but not an outlier


         Statistic
               • 133(75.6 %) Within all limits
Respondents
                                                                     12(6.8 %) 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
    156.06        Grand Avg 148.85
     85.28                      9.10
   7273.28                     82.75
     54.65                      6.11
      5.44                      0.57
      0.09                      0.09
    148.00                    148.00
      0.00                      0.00
      0.00                      0.00
12(7.6 %) More than 3 norm. S.D.
13(8.3 %) Between 2 and 3 norm. S.D.'
            1O5(66.9 %) Within 1 norm. S.D.
                           of known value
     27(17.2 %) Between 1 and 2 norm. S.D.

-------
10 /
43 EMSL-LV Intel-comparison Study: Gamma in Water, 14-Fcb-1992
Zinc-65
Lab Res. 1
A
AB
AE
AF
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AS5
BA
BB
BC
BO
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
PL
PM
140.0
138.0
151.0
155.0
151.0
161.0
143.0
137.0
179.0
153.0,
140.0
142.0
138.0

171.0
147.0
177.0
108.0
157.0
135.0
153.0
145.0
144.0
144.0
150.0
120.0
160.0
148.0
480,0
144.0
127.0
151.0
156.0
158.0
150.0
151.0
166.0
151.0
150.0
144.0
145.0
136.0
147.0
Res. 2
150.0
145.0
157.0
148.0
145.0
165.0
142.0
136.0
175.0
153.0
144.0
141.0
143.0
f
163.0
148.0
177.0
95.0
145.0
136.0
150.0
144.0
145.0
150.0
150.0
130.0
158.0
150.0
106.0
413X3
147.0
142.0
145.0
156.0
158.0
160.0
157.0
163.0
140.0
150.0
148.0
146.0
139.0
146.0
Res. 3
150.0
151.0
151.0
145.0
149.0
169.0
137.0
146.0
162.0
151.0
142.0
144.0
148.0
,
174.0
151.0
180.0
&M£
148.0
136.0
159.0
136.0
150.0
158.0
160.0
125.0
164.0
154.0
443.0
144.0
149.0
168.0
156.0
162.0
160.0
140.0
166.0
153.0
150.0
153.0
146.0
145.0
151.0
• s No data submitted
0 B
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known)
5.77
6.51
3.46
5.13
3.06
4.00
3.21
5.51
8.89
1.15
2.00
1.53
5.00
-
5.69
2.08
1.73
, , 64*
6.24
0.58
4.58
4.93
3.21
7.02
5.77
5.00
3.06
3.06
, ' MM '
1.73
11.24
11.93
0.00
2.31
5.77
8.62
1.73
7.00
0.00
4.51
0.58
4.58
2.65
0.394
0.512
0.236
0.394
0.236
0.315
0.236
0.394
0.669
0.079
0.158
0.118
0.394
'
0.433
0.158
0.118
Oi§12
0.473
0.039
0.354
0.354
0.236
0.551
0.394
0.394
0.236
0.236
0.630
1,349
0.118
0.866
0.906
0.000
0.158
0.394
0.669
0.118
0.512
0.000
0.354
0.039
0.354
0.197
146.67
144.67
153.00
149.33
148.33
165.00
140.67
139.67
172.00
152.33
142.00
142.33
143.00
s "
169.33
148.67
178.00
100.6?
150.00
135.67
154.00
141.67
146.33
150.67
153.33
125.00
160.67
150.67
114,00
4W4T
145.00
139.33
154.67
156.00
159.33
156.67
149.33
165.00
148.00
150.00
148.33
145.67
140.00
148.00
TAG SYMBOLS
Determined to
bean
outlier
-0.25
-0.48
0.48
0.06
-0.06
1.87
-0.94
-1.06
2.67
0.40
-0.79
-0.75
-0.68
'
2.37
-0.02
3.37
-5.66
0.13
-1.52
0.60
-0.83
-0.29
0.21
0.52
-2.75
1.36
0.21
-4.02
32*31
-0.44
-1.10
0.67
0.83
1.21
0.90
0.06
1.87
-0.10
0.13
-0.06
-0.37
-1.02
-0.10
ft s Above
Jj- = Below
-0.15
-0.38
0.58
0.15
0.04
1.96
-0.85
-0.96
2.77
0.50
-0.69
-0.65
-0.58

2.46
0.08
3.46
-&47
0.23
-1.42
0.69
-0.73
-0.19
0.31
0.62
-2.66
1.46
0.31
82,41
-0.35
-1.00
0.77
0.92
1.31
1.00
0.15
1.96
0.00
0.23
0.04
-0.27
-0.92
0.00
control
control

Tag












•


ft
X









X \
X













limit
limit

-------

EMSL-LV Intercomparison Study: Gamma in Water, 14-Feb-1992
11/43
Zinc-65
Lab
DR
DT
BZ
E
EA
EB
EH
EL
EN
EW
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
HE
HI
HJ
HK
HL
HP
TO
I
1C
n
IU
j
JE
JR
JS
K
KF
KH
KL
KM
KX
L
Res. 1
174.0
141.0
' ..
150.0
150.0
156.0
141.0
151.0
28&0*
144.0
147.0
146.0
140.0
132.0
159.0
157.0
164.0
145.0
144.0
147.0
147.0
147.0
152.0
147.0
147.0
146.0
', ' ' "
150.0
153.0
146.0
143.0
151.0
148.0
150.0
152.0
161.0
124.0

142.0
144.0
143.0
142.0
Res. 2
164.0
143.0
f f f f
156.0
149.0
158.0
152.0
150.0
mo
136.0
183.0
131.0
140.0
136.0
160.0
158.0
159.0
139.0
135.0
147.0
143.0
151.0
144.0
148.0
147.0
144.0
s. •"
153.0
154.0
155.0
157.0
152.0
147.0
146.0
138.0
163.0
128.0
**
141.0
149.0
147.0
144.0
Res. 3
162.0
147.0
' ,f f * 'A*/
149.0
152.0
159.0
148.0
142.0
,23?<0
138.0
156.0
112.0
140.0
132.0
150.0
159.0
160.0
136.0
150.0
144.0
144.0
132.0
166.0
147.0
147.0
143.0
" '*' ' '", i
149.0
160.0
153.0
151.0
150.0
143.0
150.0
136.0
163.0
173.0

140.0
150.0
149.0
147.0
• s No data submitted
0 3
Insufficient
data
X 3
Exper.
Sigma
6.43
3.06

3.79
1.53
1.53
5.57
4.93
;i5il3
4.16
18.73
17.04
0.00
2.31
5.51
1.00
2.65
4.58
7.55
1.73
2.08
10.02
11.14
0.58
0.00
1.53

2.08
3.79
4.73
7.02
1.00
2.65
2.31
8.72
1.15
27.21

1.00
3.21
3.06
2.52
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.473
0.236
; -/f -/
0.276
0.118
0.118
0.433
0.354
1273
0.315
1.795
1.645
0.000
0.158
0.394
0.079
0.197
0.354
0.591
0.118
0.158
0.748
0.866
0.039
0.000
0.118

0.158
0.276
0.354
0.551
0.079
0.197
0.158
0.630
0.079
2.771

0.079
0.236
0.236
0.197
166.67
143.67
, '" - , ',
151.67
150.33
157.67
147.00
147.67
, 242.00
139.33
162.00
129.67
140.00
133.33
156.33
158.00
161.00
140.00
143.00
146.00
144.67
143.33
154.00
147.33
147.00
144.33
f f
150.67
155.67
151.33
150.33
151.00
146.00
148.67
142.00
162.33
141.67

141.00
147.67
146.33
144.33
TAG SYMBOLS
Determined
to be an
outlier
2.06
-0.60
, :>,' '-'
0.33
0.17
1.02
-0.21
-0.14
i&ts
-1.10
1.52
-2.21
-1.02
-1.79
0.86
1.06
1.40
-1.02
-0.68
-0.33
-0.48
-0.64
0.60
-0.17
-0.21
-0.52
,,
0.21
0.79
0.29
0.17
0.25
-0.33
-0.02
-0.79
1.56
-0.83

-0.91
-0.14
-0.29
-0.52
ft s Above
JJ s Below
2.16
-0.50
.
0.42
0.27
1.12
-0.12
-0.04
10.85 X
-1.00
1.62
-2.12
-0.92
-1.69
0.96
1.15
1.50
-0.92
-0.58
-0.23
-0.38
-0.54
0.69
-0.08
-0.12
-0.42
.
0.31
0.89
0.38
0.27
0.35
-0.23
*
0.08
-0.69
1.66
-0.73
•
-0.81
-0.04
-0.19
-0.42
control limit
control limit

-------
12/43 EMSL-LV Intel-comparison Study : Gamma in Water, 14-Feb-1992

Zinc-65
Lab
LA
Ut
LF
Wi
LR
LT
M
MA
ME
MN
MP
MQ
MS
MT
MV
N
NB
NH
NI
NJ
NK
NP
NZ
O
OA
OB
OL
OM
00
OT
OZ
PB
FC
PD
PM
PP
PQ
PV
PW
PX
Q
QB
QJ
QK
• =
0 •
Res. 1
140.0
23&&
140.0

73.#
161.0
152.0
162.0
150.0
,
146.0
144.0
152.0
140.0
,, ,,
142.0
235.0
142.0
153.0
150.0

153.0
133.0
156.0
147.0
144.0
146.0
149.0
mo
147.0
143.0
126.0
-§5,0
122.0
158.0
163.0
151.0
166.0
144.0
145.0
149.0
147.0
151.0
124.0
Res. 2
147.0
225.0
150.0
•• f
65.0
159.0
151.0
149.0
151.0

141.0
146.0
147.0
143.0

144.0
234.0
138.0
135.0
150.0

155.0
136.0
155.0
144.0
141.0
150.0
149.0
109.0
160.0
144.0
132.0
610
161.0
143.0
172.0
147.0
170.0
139.0
146.0
149.0
146.0
147.0
129.0
Res. 3
147.0
266.0'
150.0
f f
68.0 -
163.0
149.0
156.0
151.0
'
142.0
147.0
141.0
138.0
^ ',.'' -
142.0
., J&80&
137.0
138.0
150.0
•*
131.0
134.0
154.0
148.0
144.0
146.0
148.0
, ';''«*#
166.0
156.0
133.0
Exper.
Sigma
4.04
-,21.3-8-
5.77
•""
, 4.3B
2.00
1.53
6.51
0.58
\ *
2.65
1.53
5.51
2.52
••••?•,
1.15
/ '%M,,
2.65
9.64
0.00
f
13.32
1.53
1.00
2.08
1.73
2.31
0.58
v';!Mt,
9.71
7.23
3.79
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.276
2.£?0
0.394
f f
031$
0.158
0.118
0.512
0.039
' .
0.197
0.118
0.433
0.197

0.079
6.197
0.197
0.709
0.000

0.945
0.118
0.079
0.158
0.118
0.158
0.039
0.236
0.748
0.512
0.276
144.67
242.00
146.67

6&00
161.00
150.67
155.67
150.67
' •" f
143.00
145.67
146.67
140.33
,,
142.67
; 3&&M
139.00
142.00
150.00
•*
146.33
134.33
155.00
146.33
143.00
147.33
148.67
imoo
157.67
147.67
130.33
-0.48
10J0
-0.25
''
-0J4
1.40
0.21
0.79
0.21
'
-0.68
-0.37
-0.25
-0.98
•• ••
-0.71
9*72
-1.14
-0.79
0.13

-0.29
-1.68
0.71
-0.29
-0.68
-0.17
-0.02
-4.14
1.02
-0.14
-2.14
-0.38
10.85 X \
-0.15
'• \
-9.24 x \
1.50
0.31
0.89
0.31
»
-0.58
-0.27
-0.15
-0.89
» :
-0.62
^^ jft^ V" "
v*O* "•
-1.04
-0.69
0.23
* 1
-0.19
-1.58
0.81
-0.19
-0.58
-0.08
0.08
-4.04 x :
1.12
-0.04
-2.04
£5£ft fi f f ^V "tt^ t\ •ffi^ttf' j, t*f9 ^tO f "^ f^ KT" ^ ^ft Ji ^t" |k/
* , fiW3*V ' ' &J6-1 V#* , ' -0-MJe- 'AV.vf «-JAMfrf H ;
148.0
144.0
161.0
157.0
169.0
128.0
142.0
155.0
154.0
154.0
126.0
No data submitted
Insufficient
data
x =
19.86
8.39
5.86
5.03
2.08
8.19
2.08
3.46
4.36
3.51
2.52
2.020
0.591
0.433
0.394
0.158
0.630
0.158
0.236
0.315
0.276
0.197
143.67
148.33
165.33
151.67
168.33
137.00
144.33
151.00
149.00
150.67
126.33
TAG SYMBOLS
Determined
to be an
outlier
-0.60
-0.06
1.90
0.33
2.25
-1.37
-0.52
0.25
0.02
0.21
-2.60
ft s Above
li s Below
-0.50
0.04
2.00
0.42
2.35
-1.27
-0.42
0.35
0.12
0.31
-2.50
control limit
control limit

-------
EMSL-LV Intercomparison Study: Gamma in Water,
Zinc-65
Lab Res. 1 Res. 2
QL 160.0 160.0
QM 153.0 148.0
QP 156.0 149.0
QT 135.0 138.0
Q2£
QZ 163.0 151.0
R 147.0 152.0
RH 129.0 127.0
RK 150.0 147.0
RN 152.0 154.0
RO 163.0 161.0
RQ 160.0 160.0
RR 154.0 154.0
RS ' ,
RU 135.0 136.0
RY 152.0 149.0
RZ 167.0 168.0
S 147.0 143.0
84k. 25,0 2&0
SC 155.0 160.0
SD
SF 152.0 139.0
8H- '.. - '
SI 171.0 166.0
SK 150.0 157.0
SM 142.0 140.0
SN 161.0 138.0
SR 138.0 154.0
SS 141.0 145.0
ST 129.0 134.0
•• £tH' # •• i ifjjfe 4i ~*i ^s >< 
-------
14/43 EMSL-LV
Zinc-65
Intercomparison Study: Gamma in Water, 14-Feb-1992



Data sorted by Laboratory Average
Average Tag
100.67 x
113.00 x
114.00 x
125.00
126.33
129.33
129.67
130.33
133.33
134.33
135.33
135.67
135.67
136.67
137.00
139.00
139.00
139.33
139.33
139.67
140.00
140.00
140.00
140.00
140.33
140.67
141.00
141.67
141.67
142.00
142.00
142.00
142.33
142.33
142.67
142.67
143.00
143.00
143.00
143.00
143.33
143.67
143.67
144.00
• = No data submitted
[0s Insufficient data
Lab
BG
OO
CC
BW
QK
RH
EZ
PB
FJ
NZ
RU
U
BI
ST
PW
QT
NH
EW
CK
AL
SY
GE
FE
DL
MT
AK
KL
KF
BL
NI
JS
AU
Y
AW
T
N
OB
MP
GI
AY
HI
PD
DT
S
Average Tag
144.33
144.33
144.33
144.67
144.67
144.67
144.67
145.00
145.67
145.67
145.67
145.67
146.00
146.00
146.33
146.33
146.33
146.33
146.33
146.67
146.67
146.67
146.67
147.00
147.00
147.00
147.33
147.33
147.67
147.67
147.67
148.00
148.00
148.00.
148.33
148.33
148.33
148.67
148.67
148.67
149.00
149.00
149.00
149.33
TAG SYMBOLS
x = Determined to be an
Lab
PX
L
HP
SF
LA
HE
AB
CJ
Z
W
MQ
DH
JE
GL
SM
OA
NP
KX
BM
SS
MS
LF
A
SR
HL
EH
OL
HK
OZ
KM
EL
QM
DM
DD
PM
DG
AI
OM
JR
BB
SN
R
QB
CX
Average Tag
149.33
150.00
150.00
150.00
150.33
150.33
150.67
150.67
150.67
150.67
150.67
150.67
151.00
151.00
151.00
151.33
151.67
151.67
152.33
152.67
152.67
153.00
153.33
154.00
154.00
154.33
154.33
154.67
155.00
155.00
155.33
155.67
155.67
156.00
156.33
156.33
156.67
157.67
157.67
158.00
158.33
159.33
159.33
160.00
ft = Above control
outlier •!]• = Below control
Lab
AF
NJ
DE
BH
IU
EA
QJ
ME
M
I
CA
BN
SK
Q
J
n
PQ
E
AP
RY
QP
AE
BO
HJ
BK
RR
RN
CO
SC
O
RK
MA
1C
CP
X
FL
es
OT
EB
FU
QZ
RO
CQ
RQ
limit
limit
-------
             EMSL-LV Intercomparison Study: Gamma in Water,  14-Feb-1992
                                                                     15/43
Zinc-65
Average
Tag
  Data sorted by Laboratory Average
Lab |  Average	Tag  	Lab I Average
                    Tag
                        Lab
  160.67
  160.67
  161.00
  161.00
  162.00
  162.33
  165.00
           QL
           C
           LT
           FZ
           EX
           K
           D
       165.00
       165.33
       166.67
       166.67
       167.33
       168.33
       168.33
AJ
PP
SI
DR
RZ
sv
PV
 169.33
 172.00
 178.00
 233.00
 242.00
 242.00
 428.67
1145.33
tr
X
X
X
X
X
BA
AN
BC
NB
LE
EN
CE
su
             Frequency distribution of responding labs(expected prec. vs known value)
 10

  0
              -  -T  .•  f
 %
 ioH
                      exp. prec.  "2
                                           known
                                           value
                                                exp. prec.
  Frequency distribution of responding labs(std. dev. vs mean value)
                      std. dev.
                                           mean
                                           value
                                            +2  std. dev.
• = No data submitted
0 = Insufficient data
                       TAG SYMBOLS
                x s Determined to be an outlier
                                            fl s Above control limit
                                            •II = Below control limit
-------
             EMSL-LV Intercompariaon Study:  Gamma in Water,  14-Feb-1992
                                                 16/43
Ruthenittm-106
Statistical Summary
          176 Participants
The known value of this nuclide is 203.0 pCi/1 with an expected precision of 20.0;  the control limits
are 168.3 to 237.7; the warning regions are 168.3 to 179.8 and 226.2 to 237.7
19(10.8 %) Failed to respond -...
9(5.1 %) Outliers-'
15(8.5 %) Out of control
      but not an outlier


        Statistic
                               122(69.3 %) 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
                   198.18       Grand Avg 194.62
                    95.70                     18.29
                  9158.05                   334.62
                    48.29                      9.40
                    -2.38                     -4.13
                    -0.05                     -0.46
                   195.33                   195.33
                    -3.78                     -3.78
                    -0.08                     -0.42
24(15.3 %) More than 3 norm. S.D. .
11 (7.O %) Between 2 and 3 norm. S.D. •
                           • 76(48.4 %) Within 1 norm. S.D.
                                          of known value
                   • 46(29.3 %) Between 1 and 2 norm. S.D.
-------
17/43 EMSL-LV Intercomparison Study: Gamma in Water, 14-Feb-1992

Ruthenium-106
Exper. Rng anal
Lab
A
AB
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
CC
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DL
DM
Res. 1
196.0
189.0
191.0
226.0
195.0
190.0
191.0
201.0
228.0
217.0
220.0
200.0
197.0

190.0
186.0
224.0
159.0
230.0
171.0
197.0
183.0
189.0
204.0
180.0
26.0
205.0
205.0
131.0
394,0
171.0
198.0
197.0
207.0
170.0
180.0
209.0
183.0
176.0
196.0
169.0
187.0
147.0
184.0
Res. 2
196.0
183.0
193.0
178.0
196.0
186.0
184.0
223.0
194.0
196.0
210.0
208.0
221.0
.-.•
221.0
185.0
220.0
123.0
196.0
169.0
212.0
169.0
192.0
231.0
200.0
20,0
210.0
183.0
131.0
380.0
214.0
178.0
218.0
207.0
169.0
210.0
214.0
185.0
182.0
197.0
146.0
185.0
153.0
185.0
Res. 3
185.0
175.0
188.0
206.0
191.0
194.0
194.0
229.0
215.0
175.0
190.0
209.0
168.0

217.0
185.0
207.0
131.0
202.0
167.0
210.0
194.0
199.0
201.0
180.0
3&0
207.0
178.0
151.0
' 40f£ j>
188.0
192.0
172.0
207.0
182.0
200.0
213.0
178.0
192.0
197.0
138.0
187.0
160.0
185.0
• = No data submitted
0 •
Insufficient
data
X s
Sigma (R
6.35
7.02
2.52
24.11
2.65
4.00
5.13
14.74
17.16
21.00
15.28
4.93
26.54
-
16.86
0.58
8.89
18.90
18.15
2.00
8.14
12.53
5.13
16.52
11.55
' 143
2.52
14.36
11.55
'/.. «MS»
21.66
10.26
23.03
0.00
7.23
15.28
2.65
3.61
8.08
0.58
16.09
1.15
6.51
0.58
+ SR)
0.325
0.413
0.148
1.795
0.148
0.236
0.295
0.827
1.008
1.458
0.886
0.266
2.077

0.916
0.030
0.502
1.120
1.008
0.118
0.443
0.738
0.295
0.886
0.591
0,089
0.148
0.797
0.591
0.620
1.514
0.591
1.683
0.000
0.384
0.886
0.148
0.207
0.473
0.030'
0.916
0.059
0.384
0.030
Average
192.33
182.33
190.67
203.33
194.00
190.00
189.67
217.67
212.33
196.00
206.67
205.67
195.33

209.33
185.33
217.00
137.67
209.33
169.00
206.33
182.00
193.33
212.00
186.67
24.6?
207.33
188.67
137.67
3&147 -
191.00
189.33
195.67
207.00
173.67
196.67
212.00
182.00
183.33
196.67
151.00
186.33
153.33
184.67
TAG SYMBOLS
Determined to
be an outlier
Normalized deviation
(grand-avg) (known)
-0.20
-1.06
-0.34
0.75
-0.05
-0.40
-0.43
2.00
1.53
0.12
1.04
0.96
0.06
'
1.27
-0.80
1.94
-4.93
1.27
-2.22
1.01
-1.09
-0.11
1.51
-0.69
-14,72
1.10
-0.52
-4.93
tf$&
-0.31 .
-0.46
0.09
1.07
-1.81
0.18
1.51
-1.09
-0.98
0.18
-3.78
-0.72
-3.58
-0.86
It s Above
& = Below
-0.92
-1.79
-1.07
0.03
-0.78
-1.13
-1.15
1.27
0.81
-0.61
0.32
0.23
-0.66
_,
0.55
-1.53
1.21
-5.66
0.55
-2.94
0.29
-1.82
-0.84
0.78
-1.41
1^.44
0.38
-1.24
-5.66
16.34
-1.04
-1.18
-0.64
0.35
-2.54
-0.55
0.78
-1.82
-1.70
-0.55
-4.50
-1.44
-4.30
-1.59
control
control
Tag













*• !



li







X i


11
X










Jl

U

limit
limit
-------

EMSL-LV Intercomparison Study: Gamma in Water, 14-Feb-1992
Ruthenium-106
Lab Res. 1
D0>;
DR
DT
'«&
E
EA
EB
EH
EL,
EN
EW
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
TTR
ffl
HJ
HK
HL
HP
I
1C
n
IU
J
JE
«JO
JR
JS
K
KF
KL
KM
KX
L
• =
0 s
.
193.0
136.0
189.0
215.0
181.0
182.0
198.0
373.0
165.0
246.0
173.0
170.0
142.0
208.0
174.0
189.0
160.0
193.0
190.0
201.0
177.0
170.0
204.0
193.0
197.0
206.0
176.0
' 96,0 :
187.0
178.0
208.0
- ' ' ''{
205.0
213.0
155.0
169.0
196.0
209.0
205.0
213.0
Res. 2
,/',,; '/>'' ,
213.0
165.0
203.0
211.0
188.0
181.0
199.0
163.0
176.0
253.0
156.0
180.0
196.0
199.0
189.0
218.0
153.0
189.0
162.0
197.0
155.0
180.0
202.0
193.0
215.0
168.0
193.0
- * &L0 -''
186.0
185.0
197.0
' 
-------
197
43 EMSL-LV Intel-comparison Study : Gamma in Water, 14-Feb-1992
Ruthenium-106
Lab
LA
LE
LF
J*M
LR
LT
M
MA
ME
MN
MP
MQ
MS
MT
MY
N
NB
NH
NI
NJ
NK
1*0
NP
NZ
0
OA
OB
OL
OM
00
OT
OZ
PB
WG
PD
PM
PP
PQ
PV
PW
PX
Q
QB
QJ
QK
• =
0 a
Res. 1
192.0
230.0
190.0
.-
54.0
233.0
179.0
185.0
201.0

198.0
191.0
184.0
188.0
'
188.0
mo
208.0
156.0
180.0


170.0
187.0
207.0
182.0
216.0
189.0
215.0
165.0
202.0
178.0
212.0
59.0
163.0
206.0
275.0
187.0
206.0
190.0
205.0
198.0
203.0
162.0
179.0
Res. 2
205.0
281.0
200.0
.. .. ..
8ELO
230.0
182.0
183.0
191.0
f
195.0
204.0
189.0
188.0

191.0
2£-0
229.0
153.0
180.0
- ..

215.0
183.0
208.0
181.0
214.0
172.0
206.0
174.0
223.0
194.0
205.0
08.0 ,
217.0
175.0
233.0
184.0
210.0
193.0
200.0
196.0
201.0
228.0
172.0
Res. 3
194.0
205.0
190.0
.- ffff
$2.0
233.0
176.0
180.0
189.0
..
187.0
202.0
180.0
226.0

194.0
mo
222.0
158.0
190.0

-
205.0
140.0
207.0
199.0
216.0
211.0
210.0
155.0
219.0
198.0
198.0
- s?4 '
227.0
195.0
245.0
178.0
209.0
189.0
203.0
192.0
209.0
195.0
192.0
No data submitted
Insufficient
data
X s
Exper. Rng anal
Sigma (R + SR) Average
7.00
38.73
5.77
vX ,-.-..
- %ffi < ''
1.73
3.00
2.52
6.43

5.69
7.00
4.51
21.94
'
3.00
1,53
10.69
2.52
5.77

•" f
23.63
26.06
0.58
10.12
1.15
19.55
4.51
9.50
11.15
10.58
7.00
; ', 4.78 •-
34.43
15.72
21.63
4.58
2.08
2.08
2.52
3.06
4.16
33.00
10.15
0.384
3.371
0.295
' ..
0.089
0.089
0.177
0.148
0.354

0.325
0.384
0.266
1.233

0.177
0.089
0.620
0.148
0.295


1.627
1.739
0.030
0.532
0.059
1.289
0.266
0.561
0.620
0.591
0.413
0.26&
2.695
0.916
1.458
0.266
0.118
0.118
0.148
0.177
0.236
2.808
0.591
197.00
238.67
193.33
. .•* .
''" ' 8M?
232.00
179.00
182.67
193.67
'
193.33
199.00
184.33
200.67

191.00
26.33
219.67
155.67
183.33


196.67
170.00
207.33
187.33
215.33
190.67
210.33
164.67
214.67
190.00
205.00
mm
202.33
192.00
251.00
183.00
208.33
190.67
202.67
195.33
204.33
195.00
181.00
TAG SYMBOLS
Determined to
be an
outlier
Normalized deviation
(grand-avg) (known) Tag
0.21
3.81
-0.11
.. ., ..,.,. f
-12.21 '*
3.24
-1.35
-1.04
-0.08

-0.11
0.38
-0.89
0.52
f ff
-0.31
-3UUJ7
2.17
-3.37
-0.98


0.18
-2.13
1.10
-0.63
1.79
-0.34
1.36
-2.59
1.74
-0.40
0.90
•414&
0.67
-0.23
4.88
-1.01
1.19
-0.34
0.70
0.06
0.84
0.03
-1.18
It s Above
!!• s Below
-0.52
3.09 ft
-0.84
*
1 4} -CkO xx
• jLAk+^Tt^ ?V ;
2.51
-2.08
-1.76
-0.81
*
-0.84
-0.35
-1.62
-0.20
» ;
-1.04
45.30 x
1.44
-4.10 U
-1.70
«
*
-0.55
-2.86
0.38
-1.36
1.07
-1.07
0.64
-3.32 11
1.01
-1.13
0.17
-J&33 *
-0.06
-0.95
4.16 It
-1.73
0.46
-1.07
-0.03
-0.66
0.12
-0.69
-1.91
control limit
control limit
-------

EMSL-LV Intercomparison Study: Gamma
in Water,
14-Feb-1992
20/43
Ruthenium-106
Lab
QL
QM
' QO
QP
QT
- Q2£
QZ
R
RH
RK
RN
RO
RQ
RR
RS
RU
-m ','
RZ
S
SA
SC
su
SF
SH
SI
SK
SM
SN
SR
ss
ST
' SV '''"'
sw
SY
T
u
w
X
Y
Z
Res. 1
159.0
185.0

205.0
195.0
;
183.0
194.0
175.0
214.0
203.0
205.0
208.0
193.0

181.0
mo
196.0
202.0
200.0
195.0
•*
213.0
jf
208.0
171.0
171.0
216.0
226.0
200.0
189.0
.v>yo»y ;.
'
223.0
197.0
186.0
189.0
212.0
198.0
198.0
Res. 2
175.0
225.0

176.0
228.0
'-
179.0
196.0
182.0
217.0
198.0
197.0
208.0
204.0
.-.;. f f
183.0
-' 6&6
196.0
203.0
187.0
211.0
•* S f
237.0
f
182.0
209.0
178.0
230.0
225.0
200.0
226.0
y1|Nl$.i0
• ' ,' '• '
202.0
197.0
198.0
204.0
199.0
192.0
192.0
Res. 3
165.0
199.0
f f f f f f

•"
209.0
190.0
f f f * S 
&6
m
' ',
216.0
211.0
197.0
188.0
212.0
186.0
206.0
Data
Average
24.67
Tag

x
Lab
BW
Exper.
Sigma
8.08
20.30
s
18.01
20.65
/ f ff f
3.51
1.15
3.79
13.65
5.51
4.62
0.00
6.66

2.00
0.58
1.00
30.44
12.66

17.47
'
17.01
22.85
4.04
37.04
2.65
. 5.77
26.35
,
10.69
8.08
6.66
8.96
7.51
6.00
7.02
Rnganal
(R + SR)
0.473
1.345
'
0.975
1.233
f fff ,
,
0.207
0.059
0.207
0.738
0.325
0.236
0.000
0.354
;
0.118
0.030
0.059
2.358
0.738

1.008
•*
0.945
1.402
0.207
3.033
0.148
0.295
1.964
'
0.620
0.413
0.354
0.473
0.384
0.354
0.413
Average
166.33
203.00

'.
196.67
204.33
f

182.67
194.67
179.33
223.33
203.33
202.33
208.00
200.67


183.00
195.67
203.00
176.33
197.33


217.67
'

188.67
182.67
173.33
202.00
224.00
203.33
196.67

f
213.67
201.67
193.67
193.67
207.67
192.00
198.67
Normalized deviation
(grand-avg) (known) Tag
-2.45
0.73
'
0.18
0.84
',
-1.04
0.00
-1.32
2.49
0.75
0.67
1.16
0.52
ff
-1.01
0.09
0.73
-1.58
0.23

2.00

-0.52
-1.04
-1.84
0.64
2.54
0.75
0.18
,
1.65
0.61
-0.08
-0.08
1.13
-0.23
0.35
-3.18 U
0.00
»
-0.55
0.12
*
-1.76
-0.72
-2.05
1.76
0.03
-0.06
0.43
-0.20
*
-1.73
-9,00 X
-0.64
0.00
-2.31
-0.49
*
1.27
•
-1.24
-1.76
-2.57
-0.09
1.82
0.03
-0.55
V
0.92
-0.12
-0.81
-0.81
0.40
-0.95
-0.38
sorted by Laboratory Average
Average

• s No data submitted
0 s Insufficient
data

x
26.33
Tag
x
Lab
NB
Average Tag Lab

TAG SYMBOLS
s Determined to be an outlier
53.67 x
ft s Above
H s Below
LR
control limit
control limit
-------
21/43 EMSL-LV Intel-comparison Study : Gamma in Water, 14-Feb-1992
Ruthenium-106




Data sorted by Laboratory Average
Average Tag
60.67 x
91.00 x
93.33 x
137.67 II
137.67 II
151.00 II
. 153.33 II
153.33 II
155.67 U
158.67 II
160.67 II
163.67 11
164.67 II
166.33 II
169.00
170.00
173.33
173.33
173.67
176.33
177.67
177.67
179.00
179.33
180.00
180.00
181.00
181.67
182.00
182.00
182.33 -
182.67
182.67
182.67
183.00
183.00
183.33
183.33
184.33
184.67
185.33
. 185.67
185.67
185.67
• s No data submitted
0 = Insufficient data
Lab
PC
H
RY
CC
BG
DG
GE
DL
NI
EZ
HI
DT
OO
QL
BI
NZ
SM
FE
CQ
SA
K
EW
M
RH
HJ
GL
QK
J
D
BL
AB
SK
QZ
MA
RU
PQ
NJ
DD
MS
DM
BB
FU
EH
EB
Average Tag
186.00
186.33
186.67
187.00
187.33
188.00
188.67
188.67
189.33
189.67
190.00
190.00
190.67
190.67
190.67
191.00
191.00
192.00
192.00
192.33
193.00
193.33
193.33
193.33
193.67
193.67
193.67
193.67
194.00
194.67
195.00
195.33
195.33
195.33
195.67
195.67
196.00
196.00
196.00
196.67
196.67
196.67
196.67
196.67
TAG SYMBOLS
x s Determined to be an
Lab
IU
DH
BO
GI
OA
FJ
SI
CA
CK
AK
OZ
AJ
PW
OL
AE
N
CJ
Y
PM
A
HL
MP
LF
BM
W
U
ME
KL
AI
R
QJ
Q
L
AY
RZ
CO
1C
E
AP
ST
QP
NP
DE
CS
Average Tag
197.00
197.00
197.33
197.33
198.67
199.00
199.00
200.33
200.67
200.67
201.67
202.00
202.33
202.33
202.33
202.33
202.67
203.00
203.00
203.33
203.33
203.33
204.33
204.33
204.67
205.00
205.67
205.67
206.33
206.67
207.00
207.33
207.33
207.33
207.67
207.67
208.00
208.00
208.33
209.33
209.33
209.33
210.33
212.00
ft s Above control
outlier II = Below control
Lab
LA
JE
SC
FZ
Z
MQ
HE
HK
RR
MT
T
SN
RO
PD
JR
FL
PX
S
QM
SS
RN
AF
QT
QB
EL
PB
I
AW
BK
AU
CP
O
HP
C
X
KM
RQ
DR
PV
EA
BH
BA
OM
JS
limit
limit
-------
             EMSL-LV Intel-comparison Study: Gamma in Water, 14-Feb-1992
                                                                    22/43
Ruthenium-106
Average
Tag
  Data sorted by Laboratory Average
Lab   Average	Tag	Lab  | Average
                   Tag
                        Lab
 212.00
 212.00
 212.33
 213.33
 213.67
 214.67
 215.33
           CX
           BN
           AN
           KX
           SY
           OT
           OB
       215.33
       217.00
       217.67
       217.67
       219.67
       223.33
       224.00
KF
BC
SF
AL
NH
RK
SR
 232.00
 238.67
 239.33
 251.00
 253.67
 268.67
 391.67
1299.67
IT
IT
ft
IT
X
X
X
LT
LE
EX
PP
EN
SV
CE
su
            Frequency distribution of responding labs(expected prec. vs known value)
 10
                      exp. prec
                                          known
                                           value
                                               exp. prec.
               Frequency distribution of responding labs(std. dev. vs mean value)
     -6
        std. dev.   -2
                                           mean
                                           value
                                     std. dev.
• = No data submitted
0 s Insufficient data
                       TAG SYMBOLS
                    Determined to be an outlier
                                           IT s Above control limit
                                           Ij. = Below control limit
-------
             EMSL-LV Intercomparison Study: Gamma in Water,  14-Feb-1992
                                  23/43
Cesium-134                         Statistical Summary                       176 Participants
The known value of this nuclide is 31.0 pCi/I with an expected precision of 5.0;  the control limits
are 22.3 to 39.7; the warning regions are 22.3 to 25.2 and 36.8 to 39.7
18(10.2 %) Failed to respond -.
8(4.5 %) Outliers •'
1 (O.6 %) Out of control •
     but not an outlier

         Statistic
                139(79.0 %) Within all limits
Respondents
10(5.7 %) In warning zone
        but within control

           Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
30.24
15.25
232.61
50.43
-2.45
-0.05
29.33
-5.38
-0.11
Grand Avg 29.44
2.69
7.23
9.14
-5.03
-0.58
29.50
-4.84
-0.56
9(5.7 %) More than 3 norm. S.D. •
1O(6.3 %) Between 2 and 3 norm. S.D.
           ,104(65.8 %) Within 1 norm. S.D.
                           of known value
     35(22.2 %) Between 1 and 2 norm. S.D.
-------
247
43 EMSL-LV Intcrcomparison Study : Gamma in Water, 14-Feb-1992

Cesium-134
Exper. Rng anal
Lab
A
AB
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
CC
CE
CJ
CK
CO
CP
CQ
CS
CX
D
DD
DE
DG
DH
DL
DM
• =
0 =
Res. 1
29.0
28.0
31.0
27.0
28.0
28.0
28.0
45.0
32.0
29.0
31.0
28.0
24.0

38.0
28.0
31.0
28.0
27.0
31.0
34.0
29.0
29.0
28.0
27.0
24.0
24.0
34.0
. 21.0
38.0
31.0
28.0
34.0
31.0
28.0
29.0
32.0
30.0
29.0
28.0
36.0
29.0
27.0
29.0
Res. 2
28.0
29.0
29.0
28.0
28.0
29.0
28.0
34.0
32.0
30.0
28.0
31.0
24.0
s
33.0
28.0
34.0
25.0
25.0
31.0
32.0
28.0
31.0
29.0
28.0
27.0
24.0
31.0
20.0
40.0
27.0
24.0
27.0
31.0
29.0
30.0
29.0
29.0
27.0
28.0
39.0
30.0
28.0
29.0
Res. 3
29.0
29.0
32.0
29.0
28.0
29.0
28.0
34.0
31.0
31.0
30.0
26.0
26.0

29.0
28.0
32.0
30.0
29.0
31.0
31.0
28.0
30.0
27.0
27.0
26.0
24.0
30.0
23.0
40.0
29.0
24.0
32.0
31.0
31.0
30.0
34.0
30.0
29.0
29.0
38.0
30.0
25.0
30.0
No data submitted
Insufficient
data
x s
Sigma (R
0.58
0.58
1.53
1.00
0.00
0.58
0.00
6.35
0.58
1.00
1.53
2.52
1.15

4.51
0.00
1.53
2.52
2.00
0.00
1.53
0.58
1.00
1.00
0.58
1.53
0.00
2.08
1.53
1.15
2.00
2.31
3.61
0.00
1.53
0.58
2.52
0.58
1.15
0.58
1.53
0.58
1.53
0.58
+ SR)
0.118
0.118
0.354
0.236
0.000
0.118
0.000
1.570
0.118
0.236
0.354
0.591
0.236

1.120
0.000
0.354
0.591
0.473
0.000
0.354
0.118
0.236
0.236
0.118
0.354
0.000
0.473
0.354
0.236
0.473
0.473
0.827
0.000
0.354
0.118
0.591
0.118
0.236
0.118
0.354
0.118
0.354
0.118
Average
28.67
28.67
30.67
28.00
28.00
28.67
28.00
37.67
31.67
30.00
29.67
28.33
24.67
.•
33.33
28.00
32.33
27.67
27.00
31.00
32.33
28.33
30.00
28.00
27.33
25.67
24.00
31.67
21.33
39.33
29.00
25.33
31.00
31.00
29.33
29.67
31.67
29.67
28.33
28.33
37.67
29.67
26.67
29.33
TAG SYMBOLS
Determined to
be an outlier
Normalized deviation
(grand-avg) (known) Tag
-0.27
-0.27
0.42
-0.50
-0.50
-0.27
-0.50
2.85
0.77
0.19
0.08
-0.38
-1.65
..
1.35
-0.50
1.00
-0.62
-0.85
0.54
1.00
-0.38
0.19
-0.50
-0.73
-1.31
-1.89
0.77
-2.81
3.43
-0.15
-1.42
0.54
0.54
-0.04
0.08
0.77
0.08
-0.38
-0.38
2.85
0.08
-0.96
-0.04
ft s Above
•!)• = Below
-0.81
-0.81
-0.12
-1.04
-1.04
-0.81
-1.04
2.31
0.23
-0.35
-0.46
-0.92
-2.19
*
0.81
-1.04
0.46
-1.15
-1.39
0.00
0.46
-0.92
-0.35
-1.04
-1.27
-1.85
-2.42
0.23
-3.35 U
2.89
-0.69
-1.96
0.00
0.00
-0.58
-0.46
0.23
-0.46
-0.92
-0.92
2.31
-0.46
-1.50
-0.58
control limit
control limit
-------
EMSL-LV Intercomparison Study
: Gamma in Water, 14-Feb-1992
25/43
Cesium- 134
Lab
DO
DR
DT
DZ
E
EA
EB
EH
EL
EN
EW
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
HE
HI
HJ
HK
HL
HP
HU
I
1C
n
IU
J
JE
JK
JS
K
KF
KL
KM
KX
L
• =
0 m
Res. 1
29.0
29.0
29.0
' ' ' ', '"
28.0
29.0
28.0
25.0
30.0
33.0
28.0
41.0
31.0
25.0
31.0
30.0
29.0
31.0
25.0
30.0
29.0
29.0
31.0
32.0
32.0
30.0
28.0
32.0
37.0
i&o,
30.0
28.0
31.0
32.0
20.0
27.0
28.0
29.0
29.0
29.0
30.0
Res. 2
33.0
31.0
28.0
>y',, ' '
32.0
31.0
29.0
30.0
32.0
40.0
25.0
39.0
23.0
26.0
29.0
30.0
29.0
29.0
28.0
27.0
30.0
31.0
31.0
35.0
30.0
30.0
29.0
33.0
30.0
' I&O
30.0
27.0
30.0
31.0
23.0
28.0
35.0
28.0
31.0
31.0
30.0
Res. 3
28.0
32.0
25.0
' ', ^" '
31.0
31.0
29.0
29.0
29.0
30.0
26.0
35.0
23.0
27.0
31.0
31.0
29.0
30.0
27.0
28.0
31.0
30.0
30.0
34.0
31.0
30.0
32.0
*%
30.0
31.0
'/'-iifco ,
31.0
27.0
29.0
28.0
29.0
27.0
36.0
28.0
30.0
30.0
29.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
2.65
1.53
2.08
,/V*'', Y'
2.08
1.15
0.58
2.65
1.53
5.13
1.53
3.06
4.62
1.00
1.15
0.58
0.00
1.00
1.53
1.53
1.00
1.00
0.58
1.53
1.00
0.00
2.08
', ' ' '' '
1.53
3.79
- -, -4*53
0.58
0.58
1.00
2.08
4.58
0.58
4.36
0.58
1.00
1.00
0.58
Rng anal
(R + SR) Average
0.591
0.354
0.473
*/; , ?-,
0.473
0.236
0.118
0.591
0.354
1.345
0.354
0.709
0.945
0.236
0.236
0.118
0.000
0.236
0.354
0.354
0.236
0.236
0.118
0.354
0.236
0.000
0.473
'
0.354
0.827
0.354
0.118
0.118
0.236
0.473
1.120
0.118
0.945
0.118
0.236
0.236
0.118
30.00
30.67
27.33
' ' , 
30.33
30.33
28.67
28.00
30.33
34.33
26.33
38.33
25.67
26.00
30.33
30.33
29.00
30.00
26.67
28.33
30.00
30.00
30.67
33.67
31.00
30.00
29.67

31.67
32.67
-V
30.33
27.33
30.00
30.33
24.00
27.33
33.00
28.33
30.00
30.00
29.67
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
0.19
0.42
-0.73
""•„"''-' ' ,
0.31
0.31
-0.27
-0.50
0.31
1.69
-1.08
3.08
-1.31
-1.19
0.31
0.31
-0.15
0.19
-0.96
-0.38
0.19
0.19
0.42
1.46
0.54
0.19
0.08
•t
0.77
1.12
*&12 ,
0.31
-0.73
0.19
0.31
-1.89
-0.73
1.23
-0.38
0.19
0.19
0.08
1t s Above
•li s Below
-0.35
-0.12
-1.27
- *
-0.23
-0.23
-0.81
-1.04
-0.23
1.15
-1.62
2.54
-1.85
-1.73
-0.23
-0.23
-0.69
-0.35
-1.50
-0.92
-0.35
-0.35
-0.12
0.92
0.00
-0.35
-0.46
0.23
0.58
'§,66 X
-0.23
-1.27
-0.35
*
-0.23
-2.42
-1.27
0.69
-0.92
-0.35
-0.35
-0.46
control limit
control limit
-------
267
43 EMSL-LV Intercomparison Study: Gamma in Water, 14-Feb-1992
Cesium-134
Lab Res. 1
LA
-------
EMSL-LV Intercomparison Study: Gamma
Cesium
Lab
QL
QM
QO
QP
QT
<$X
QZ
R
RH
RK
RN
RO
RQ
RR
RS
RU
RY
RZ
S
SA
sc
SB
SF
8H
SI
SK
SM
SN
SR
ss
ST
80;
sw
SY
T
U
w
X
Y
Z
-134
Res. 1
27.0
30.0
, "
30.0
29.0

27.0
28.0
27.0
26.0
31.0
29.0
32.0
29.0
,
26.0
30.0
32.0
29.0
1&0
32.0
27.0
S '
30.0
30.0
31.0
25.0
31.0
30.0
31.0
269.0
' f
28.0
32.0
29.0
26.0
29.0
28.0
27.0

Res. 2
24.0
28.0
"" / ff '
31.0
29.0
-,
27.0
30.0
26.0
26.0
29.0
28.0
32.0
32.0
' ' . ,
25.0
29.0
33.0
29.0
' " '' 7*& "
33.0
29.0
'
29.0
28.0
28.0
32.0
30.0
27.0
29.0
- ;^ifr;
- J'f'^"-'
27.0
31.0
28.0
27.0
31.0
29.0
29.0

Exper. Rng anal
Res. 3 Sigma (R + SR)
25.0 1.53 0.354
32.0 2.00 0.473
'4 "/ , J' ^ ,' , ' ' ,j "^' ' ^ f, ;^
26.0 2.65 0.591
29.0 0.00 0.000
';'''' -v /-' ' •'?''',
29.0 1.15 0.236
29.0 1.00 0.236
29.0 1.53 0.354
28.0 1.15 0.236
30.0 1.00 0.236
29.0 0.58 0.118
32.0 0.00 0.000
31.0 1.53 0.354
f f f f •> ' •*
f f
26.0 0.58 0.118
27.0 1.53 0.354
30.0 1.53 0.354
30.0 0.58 0.118
,'/'l4,0 - iMJt -3J&7
29.0 2.08 0.473
30.0 1.53 0.354
' * r'ff f *
28.0 1.00 0.236
28.0 1.15 0.236
30.0 1.53 0.354
34.0 4.73 1.120
30.0 0.58 0.118
29.0 1.53 0.354
30.0 1.00 0.236
"'f-X&$'J.f y JUH- ; , &8*^ ,
'Cxf*?'-;,.. ,*** '' m™
33.0 3.21 0.709
30.0 1.00 0.236
32.0 2.08 0.473
27.0 0.58 0.118
29.0 1.15 0.236
29.0 0.58 0.118
28.0 1.00 0.236
in Water,

Average
25.33
30.00
V , '
29.00
29.00
' ff S
27.67
29.00
27.33
26.67
30.00
28.67
32.00
30.67
25.67
28.67
31.67
29.33
'' 10 J3
31.33
28.67
..
29.00
28.67
29.67
30.33
30.33
28.67
30.00
', -, '-*&#*:
29.33
31.00
29.67
26.67
29.67
28.67
28.00
14-Feb-1992

Normalized
(grand-avg)
-1.42
0.19
' ' '" A
-0.15
-0.15
ff
-0.62
-0.15
-0.73
-0.96
0.19
-0.27
0.89
0.42
-1.31
-0.27
0.77
-0.04
' : 4<6.62
0.66
-0.27
f
-0.15
-0.27
0.08
0.31
0.31
-0.27
0.19
•* f f ji ^»^
f ^3L *f*t •*
-0.04
0.54
0.08
-0.96
0.08
-0.27
-0.50
27/43

deviation
(known) Tag
-1.96
-0.35
'* ' ' >' *
-0.69
-0.69
, 'f" ' ' *
-1.15
-0.69
-1.27
-1.5O
-0.35
-0.81
0.35
-0.12
*
-1.85
-0.81
0.23
-0.58
•7.16 X
0.12
- * "'„
-0.81
.
-0.69
-0.81
-0.46
-0.23
-0.23
-0.81
-0.35
6193 x
-0.58
0.00
-0.46
-1.50
-0.46
-0.81
-1.04
Data sorted by Laboratory Average
Average
10.33


Tag
x
• = No data submitted
0 s Insufficient data
Lab Average Tag
SA 11.33 x
TAG SYMBOLS
Lab Average Tag Lab
NB
12.00
x LR
ft = Above control limit
x = Determined to be an outlier
•!!• s Below control limit
-------
28/43
Cesium-134

Average
12.33
14.67
21.33
24.00
24.00
24.00
24.67
25.00
25.33
25.33
25.33
25.67
25.67
25.67
26.00
26.00
26.33
26.67
26.67
26.67
26.67
26.67
27.00
27.00
27.00
27.33
27.33
27.33
27.33
27.33
27.67
27.67
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.00
28.33
28.33
28.33
• = No data
EMSL-LV Intercomparison

Data sorted
Tag Lab
x PC
x n
Ji cc
NH
JS
C
AY
NI
QL
LA
CK
RU
EZ
BW
OO
FE
EW
W
RK
M
GE
DL
QK
PW
BH
RH
K
J
DT
BO
QZ
BG
Z
MP
LF
EH
BN
BB
AK
AI
AF
PB
N
KL
Average
28.33
28.33
28,33
28.33
28.33
28.67
28.67
28.67
28.67
28.67
28.67
28.67
28.67
28.67
28.67
28.67
28.67
28.67
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.00
29.33
29.33
29.33
29.33
29.33
29.67
29.67
29.67
29.67
29.67
29.67
29.67
29.67
29.67
29.67
29.67
Study: Gamma in Water, 14-Feb-1992

by Laboratory Average
Tag Lab
GI
DE
DD
BL
AW
Y
SS
SK
SF
RY
RO
OL
OA
MA
EB
AJ
AB
A
SI
R
QT
QP
QJ
Q
oz
NJ
FU
CJ
SY
S
o
DM
CQ
X
u
SM
PQ
PD
NZ
ME
L
B3*
DH
D
Average Tag
29.67
29.67
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.00
30.33
30.33
30.33
30.33
30.33
30.33
30.33
30.33
30.33
30.33
30.67
30.67
30.67
30.67
31.00
31.00
31.00
31.00
31.00
31.00
31.33
31.67
31.67
31.67
submitted TAG SYMBOLS ft = Above control
0 = Insufficient data x = Determined to be an outlier U = Below control


•
Lab
CS
AU
ST
RN
QM
PX
OM
NP
MT
MQ
KX
KM
JE
HL
HE
GL
FZ
DO
BM
AP
SR
SN
MS
JR
IU
FL
FJ
EL
EA
E
RR
m
DR
AE
T
QB
HK
CP
CO
BI
SC
RZ
I
CX
limit
limit
-------
             EMSL-LV Intercomparison Study: Gamma in Water, 14-Feb-1992
                                                                                 29/43
Cesium-134
Average
            Tag
  Data sorted by Laboratory Average
Lab   Average	Tag	Lab |  Average
                    Tag
                       Lab
   31.67
   31.67
   32.00
   32.00
   32.00
   32.33
   32.33
                       CA
                       AN
                       RQ
                       PV
                       OT
                       BK
                       BC
        32.67
        33.00
        33.00
        33.00
        33.33
        33.67
        34.33
        35.33
1C
PM
OB
KF
BA
HJ
EN
PP
 37.67
 37.67
 38.33
 38.33
 39.33
 40.33
 48.00
212.67
x
x
X
DG
AL
LT
EX
CE
SV
LE
SU
             Frequency distribution of responding labs(expected prec. vs known value)
 20-
     -6
                 •4  exp. prec.
                                           known
                                            value
                                     exp. prec. +4
                Frequency distribution of responding labs(std. dev. vs mean value)
 10
OJM¥_
                                                                 •T  - -i
                   -4   std. dev.  -2
                                            mean
                                            value
                                                             std. dev.
• = No data submitted
0  = Insufficient data
                                    TAG SYMBOLS
                             x s Determined to be an outlier
                                            It s Above control limit
                                            U s Below control limit
-------
             EM8L-LV Intel-comparison Study:  Gamma in Water, 14-Feb-1992
                                                 30/43
Cesium-137
Statistical Summary
                                                                              176 Participants
The known value of this nuclide is 49.0 pCi/1 with an expected precision of 5.0; the control limits
are 40.3 to 57.7; the warning regions are 40.3 to 43.2 and 54.8 to 57.7
18(10.2 %) Failed to respond -..^
10(5.7%) Outliers *
7(4.O %) Out of control'
     but not an outlier


         Statistic
                              ; 127(72.2 %) Within all limits
               Respondents
                                                                   *• 14(8.O %) 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
                    51.82
                    26.60
                   707.66
                    51.34
                     5.75
                     0.11
                    50.33
                     2.72
                     0.05
                                                                      Grand Avg 50.69
                                                                                   3.69
                                                                                  13.60
                                                                                   7.28
                                                                                   3.46
                                                                                   0.46
                                                                                  50.67
                                                                                   3.40
                                                                                   0.45
19(12.O %) More than 3 norm. S.D.
12(7.6 %) Between 2 and 3 norm. S.D. •
                           .80(50.6 %) Within 1 norm. S.D.
                                          of known value
                   •47(29.7 %) Between 1 and 2 norm. S.D.
-------
317
43 EMSL-LV Intel-comparison Study : Gamma in Water, 14-Feb-1992
Cesium-137
Lab Res. 1
A
AB
AE
AF
AI
AJ
AK
AL
AN
AP
AU
AW
AY
AZ
BA
BB
BC
BCJ
BH
BI
BK
BL
BM
BN
BO
BW
C
CA
CC
CE
CJ
CK
CO
CP
CQ
CS
dt;
ex
D
DD
DE
DG
DH
DL
DM
49.0
40.0
54.0
50.0
49.0
55.0
48.0
47.0
58.0
56.0
52.0
51.0
46.0

59.0
49.0
61.0
30.0
50.0
44.0
54.0
51.0
49.0
57.0
48.0
47.0
52.0
53.0
39.0
56.0
56.0
45.0
46.0
51.0
50.0
50.0

48.0
52.0
51.0
52.0
51.0
44.0
49.0
50.0
Res. 2
49.0
49.0
50.0
52.0
50.0
54.0
47.0
51.0
60.0
54.0
49.0
50.0
44.0
•
54.0
49.0
60.0
, 27,0
53.0
44.0
52.0
47.0
53.0
57.0
51.0
45.0
52.0
50.0
39.0
48.0
54.0
47.0
53.0
51.0
54.0
50.0

51.0
51.0
50.0
52.0
47.0
43.0
47.0
50.0
Res. 3
48.0
46.0
50.0
51.0
50.0
53.0
47.0
45.0
62.0
52.0
48.0
52.0
45.0
.•
59.0
49.0
61.0
$M>
52.0
44.0
56.0
50.0
50.0
59.0
51.0
46.0
50.0
50.0
42.0
51.0
51.0
50.0
50.0
51.0
58.0
51.0

51.0
50.0
51.0
52.0
51.0
44.0
48.0
51.0
• = No data submitted
0 =
Insufficient
data
x =
Exper.
Sigma
0.58
4.58
2.31
1.00
0.58
1.00
0.58
3.06
2.00
2.00
2.08
1.00
1.00
.. ....
2.89
0.00
0.58
, &0&
1.53
0.00
2.00
2.08
2.08
1.15
1.73
1.00
1.15
1.73
1.73
4.04
2.52
2.52
3.51
0.00
4.00
0.58

1.73
1.00
0.58
0.00
2.31
0.58
1.00
0.58

Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.118
1.120
0.473
0.236
0.118
0.236
0.118
0.709
0.473
0.473
0.473
0.236
0.236

0.591
0.000
0.118
0.473
0.354
0.000
0.473
0.473
0.473
0.236
0.354
0.236
0.236
0.354
0.354
0.945
0.591
0.591
0.827
0.000
0.945
0.118

0.354
0.236
0.118
0.000
0.473
0.118
0.236
0.118
48.67
45.00
51.33
51.00
49.67
54.00
47.33
47.67
60.00
54.00
49.67
51.00
45.00
.•
57.33
49.00
60.67
29.33
51.67
44.00
54.00
49.33
50.67
57.67
50.00
46.00
51.33
51.00
40.00
51.67
53.67
47.33
49.67
51.00
54.00
50.33

50.00
51.00
50.67
52.00
49.67
43.67
48.00
50.33
TAG SYMBOLS
Determined
to be an
outlier
-0.70
-1.97
0.22
0.11
-0.36
1.16
-1.16
-1.05
3.22
1.15
-0.36
0.11
-1.97
..
2.30
-0.59
3.45
**!*4&
0.34
-2.32
1.15
-0.47
-0.01
2.42
-0.24
-1.63
0.22
0.11
-3.70
0.34
1.03
-1.16
-0.36
0.11
1.15
-0.12

-0.24
0.11
-0.01
0.45
-0.36
-2.43
-0.93
-0.12
ft = Above
Jl = Below
-0.12
-1.39
0.81
0.69
0.23
1.73
-0.58
-0.46
3.81 ft
1.73
0.23
0.69
-1.39
* i
2.89
0.00
4.04 ft
-&81. X
0.92
-1.73
1.73
0.12
0.58
3.00
0.35
-1.04
0.81
0.69
-3.12 Ji
0.92
1.62
-0.58
0.23
0.69
1.73
0.46
«
0.35
0.69
0.58
1.04
0.23
-1.85
-0.35
0.46
control limit
control limit
-------

EMSL-LV Intercomparison Study
Cesium-137
Lab Res. 1
DO
DR
DT
BZ
E
EA
EB
EH
EL
EN
EW
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
TTTC
m
HJ
HK
HL
HP
JBlf
I
1C
IU
J
JE
JO
JR
JS
K
KF
KL
KM
KX
L
41.0
54.0
53.0
49.0
50.0
54.0
49.0
50.0
55.0
47.0
49.0
48.0
47.0
55.0
51.0
53.0
49.0
48.0
51.0
50.0
51.0
49.0
59.0
52.0
52.0
52:0
55.0
52.0
31.0
51.0
49.0
54.0
;
53.0
&M>;
52.0
47.0
50.0
51.0
51.0
53.0
Res. 2
46.0
51.0
55.0
55.0
49.0
53.0
49.0
50.0
51.0
46.0
54.0
45.0
47.0
50.0
53.0
53.0
51.0
47.0
47.0
49.0
48.0
47.0
52.0
52.0
52.0
52.0
52.0
50.0
, , 3&0
53.0
50.0
54.0
' ' '/
51.0
i&o
57.0
56.0
51.0
51.0
50.0
45.0
Res. 3
47.0
53.0
48.0
53.0
50.0
55.0
45.0
49.0
61.0
47.0
52.0
36.0
46.0
49.0
53.0
53.0
49.0
49.0
49.0
50.0
48.0
48.0
54.0
53.0
52.0
47.0
f ff v ff f
54.0
51.0
, ' „ V$&s0>
53.0
49.0
49.0
" t '
56.0
'«U>
54.0
53.0
49.0
54.0
50.0
48.0
• s No data submitted
0 a
Insufficient
data
x ;
Exper.
Sigma
3.21
1.53
3.61
3.06
0.58
1.00
2.31
0.58
5.03
0.58
2.52
6.24
0.58
3.21
1.15
0.00
1.15
1.00
2.00
0.58
1.73
1.00
3.61
0.58
0.00
2.89
1.53
1.00
'^ ^ ,'3>JQQ -
1.15
0.58
2.89
, *
2.52
2M
2.52
4.58
1.00
1.73
0.58
4.04
: Gamma in Water,
Rng anal
(R + SR) Average
0.709
0.354
0.827
0.709
0.118
0.236
0.473
0.118
1.345
0.118
0.591
1.795
0.118
0.709
0.236
0.000
0.236
0.236
0.473
0.118
0.354
0.236
0.827
0.118
0.000
0.591
0.354
0.236
ft, n'&^t
f TJfcdC'O-*?
0.236
0.118
0.591

0.591
0.4T3
0.591
1.120
0.236
0.354
0.118
0.945
44.67
52.67
52.00
52.33
49.67
54.00
47.67
49.67
55.67
46.67
51.67
43.00
46.67
51.33
52.33
53.00
49.67
48.00
49.00
49.67
49.00
48.00
55.00
52.33
52.00
50.33
53.67
51.00
"/*' Mots;
52.33
49.33
52.33

53.33
3467
54.33
52.00
50.00
52.00
50.33
48.67
TAG SYMBOLS
= Determined
to be an
outlier
14-Feb-1992
32/43
Normalized deviation
(grand-avg) (known) Tag
-2.09
0.68
0.45
0.57
-0.36
1.15
-1.05
-0.36
1.72
-1.40
0.34
-2.67
-1.40
0.22
0.57
0.80
-0.36
-0.93
-0.59
-0.36
-0.59
-0.93
1.49
0.57
0.45
-0.12
1.03
0.11
0.57
-0.47
0.57

0.91
-5.66
1.26
0.45
-0.24
0.45
-0.12
-0.70
ft s Above
!!• s Below
-1.50
1.27
1.04
1.15
0.23
1.73
-0.46
0.23
2.31
-0.81
0.92
-2.08
-0.81
0.81
1.15
1.39
0.23
-0.35
0.00
0.23
0.00
-0.35
2.08
1.15
1.04
0.46
1.62
0.69
1.15
0.12
1.15
*
1.50
•407 x
1.85
1.04
0.35
1.04
0.46
-0.12
control limit
control limit
-------
33/43 EMSL-LV Intel-comparison Study : Gamma in Water, 14-Feb-1992
Cesium-137
Lab
LA
LE
LF
LM
LR
LT
M
MA
ME
MN
MP
MQ
MS
MT
MV
N
NB
NH
NI
NJ
NK
NP
NZ
O
OA
OB
OL
OM
OO
OT
O35
PB
PC
PD
PM
PP
PQ
PV
PW
PX
Q
QB
QJ
OK
• =
0 s
Res. 1
51.0
?9.0
46.0

19*0
44.0
49.0
50.0
51.0

50.0
52.0
50.0
50.0
"
47.0
3&$
54.0
48.0
52.0
48.0
43.0
53.0
51.0
50.0
50.0
57.0
43.0
60.0
28.0
46.0
;24-0
48.0
45.0
58.0
49.0
55.0
47.0
47.0
53.0
49.0
54.0
45.0
Res. 2 Res. 3
48.0
74x0
49.0
..
18.0
43.0
. 47.0
50.0
52.0
.. .. ....
50.0
53.0
51.0
51.0
-
49.0
3&0
57.0
43.0
51.0
54.0
37.0
53.0
51.0
49.0
51.0
57.0
45.0
60.0
29.0
42.0
28.0- '
50.0
60.0
61.0
49.0
57.0
46.0
48.0
50.0
55.0
52.0
47.0
52.0
90.0
51.0

20*0
45.0
48.0
54.0
53.0
......
50.0
53.0
48.0
49.0
'
47.0
35.0
57.0
47.0
53.0
ff
55.0
36.0
53.0
50.0
50.0
54.0
54.0
44.0
58.0
so.d
46.0
2&0 -
57.0
46.0
59.0
50.0
53.0
50.0
48.0
50.0
48.0
57.0
47.0
No data submitted
Insufficient
data
x s
Exper.
Sigma
2.08
&19
2.52
-
1*0$
1.00
1.00
2.31
1.00
.;•
0.00
0.58
1.53
1.00
,^
1.15
IM
1.73
2.65
1.00
f
3.79
3.79
0.00
0.58
0.58
2.08
1.73
1.00
1.15
>/ '-1.00- ,"
2.31
,- -' im
4.73
8.39
1.53
0.58
2.00
2.08
0.58
1.73
3.79
2.52
1.16
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.473
2.695
0.591
•"
0.23$
0.236
0.236
0.473
0.236
f
0.000
0.118
0.354
0.236
••-f „
0.236
OJ236
0.354
0.591
0.236

0.827
0.827
0.000
0.118
0.118
0.473
0.354
0.236
0.236
0J&6
0.473
0,236
1.120
2.470
0.354
0.118
0.473
0.473
0.118
0.354
0.827
0.591
0.236
50.33
81.00
48.67
f f
19.00
44.00
48.00
51.33
52.00
.-..
50.00
52.67
49.67
50.00
I^V*-*' /" "
47.67
' HUHT'
56.00
46.00
52.00
52.33
38.67
53.00
50.67
49.67
51.67
56.00
44.00
59.33
' '/ S&0&
44.67
23,00
51.67
50.33
59.33
49.33
55.00
47.67
47.67
51.00
50.67
54.33
46.33
TAG SYMBOLS
Determined
to be an
outlier
-0.12
mso
-0.70

-10.98
-2.32
-0.93
0.22
0.45
.-
-0.24
0.68
-0.36
-0.24
"""" " ' ', "
-1.05
<&fft
1.84
-1.63
0.45
0.57
-4.17
0.80
-0.01
-0.36
0.34
1.84
-2.32
2.99
' *?.§!
-2.09
-4MS&
0.34
-0.12
2.99
-0.47
1.49
-1.05
-1.05
0.11
-0.01
1.26
-1.51
IT s Above
\\. s Below
0.46
11.09 X
-0.12
»
10*39 x
-1.73
-0.35
0.81
1.04
»,
0.35
1.27
0.23
0.35
»
-0.46
^.08 x
2.42
-1.04
1.04
*
1.15
-3.58 11
1.39
0.58
0.23
0.92
2.42
-1.73
3.58 IT
-&93 X !
-1.50
-9.01 X
0.92
0.46
3.58 IT
0.12
2.08
-0.46
-0.46
0.69
0.58
1.85
-0.92
control limit
control limit
-------

Cesium
Lab
QL
QM
QO
QP
QT
4$5t
QZ
R
RH
RK
RN
RO
RQ
RR
RS
RU
RY
RZ
S
SA
SC
SD
SF
SI
SK
SM
SN
SR
ss
ST
ODf- '
sv
,SW
SY
T
U
W
X
Y
Z

Average
19.00
EMSL-LV Intercomparison Study: Gamma
-137
Res. 1
49.0
48.0
54.0
53.0

51.0
50.0
45.0
46.0
57.0
53.0
54.0
47.0
**
45.0
51.0
52.0
54.0
08,0
53.0

49.0
54.0
49.0
49.0
55.0
57.0
50.0
57.0
36&0
61.0

64.0
47.0
47.0
55.0
49.0
51.0
54.0




Res. 2
46.0
45.0
' / '
49.0
50.0
'
48.0
52.0
47.0
49.0
57.0
54.0
54.0
48.0
'
43.0
55.0
48.0
55.0
140
52.0
,
47.0
48.0
53.0
49.0
60.0
53.0
46.0
57.0
S740
56.0
'; '"'' ,
54.0
52.0
49.0
52.0
55.0
48.0
55.0

Tag
x

Res. 3
45.0
49.0
52.0
54.0
, ,, ' %
52.0
52.0
46.0
51.0
55.0
53.0
54.0
49.0
/ ' '
43.0
38.0
51.0
56.0
/ -£3,0
51.0
yy,' ,
55.0
50.0
56.0
48.0
53.0
59.0
47.0
60.0
"''jw&d
56.0
' ', ','/"''''
49.0
48.0
53.0
49.0
53.0
49.0
55.0
Data

Exper.
Sigma
2.08
2.08
2.52
2.08

2.08
1.15
1.00
2.52
1.15
0.58
0.00
1.00
,
1.15
1 8.89
2.08
1.00
12.66
1.00
' ,
4.16
f
3.06
3.51
0.58
3.61
3.06
2.08
1.73
"-, , '4-&3L
2.89
',
7.64
2.65
3.06
3.00
3.06
1.53
0.58

Rnganal
(R + SR)
0.473
0.473
'f ff S f
0.591
0.473
, ''' '
0.473
0.236
0.236
0.591
0.236
0.118
0.000
0.236
,
0.236
2.921
0.473
0.236
4496
0.236

0.945
0.709
0.827
0.118
0.827
0.709
0.473
0.354
1.IS6
0.591
f f f
2.470
0.591
0.709
0.709
0.709
0.354
0.118
in Water,

Average
46.67
47.33
51.67
52.33

50.33
51.33
46.00
48.67
56.33
53.33
54.00
48.00
'
43.67
48.00
50.33
55.00
28,30
52.00
- /
50.33
50.67
52.67
48.67
56.00
56.33
47.67
58.00
me?
57.67
' '
55.67
49.00
49.67
52.00
52.33
49.33
54.67
14-Feb-1992

Normalized
(grand-avg)
-1.40
-1.16
0.34
0.57
'
-0.12
0.22
-1.63
-0.70
1.95
0.91
1.15
-0.93
_, •*
-2.43
-0.93
-0.12
1.49
JtM
0.45
, ' , -
-0.12
-0.01
0.68
-0.70
1.84
1.95
-1.05
2.53
- "11188"
2.42
'
1.72
-0.59
-0.36
0.45
0.57
-0.47
1.38
34/43
'
deviation
(known) Tag
-0.81
-0.58
0.92
1.15
*
0.46
0.81
-1.04
-0.12
2.54
1.50
1.73
-0.35
*
-1.85
-0.35
0.46
2.08
-7,16, X
1.04
*
0.46
0.58
1.27
-0.12
2.42
2.54
-0.46
3.12 It
112,4? x
3.00
*
2.31
0.00
0.23
, 1.04
1.15
0.12
1.96
sorted by Laboratory Average
Lab Average
LR
• s No data submitted
0 s Insufficient data
x
23.00
Tag
x
Lab Average Tag Lab
PC
TAG SYMBOLS
s Determined to be an outlier
28.33
x SA
ft s Above control limit
li s Below control limit
-------
35/43
Cesium-137

Average
29.00
29.33
32.00
34.33
34.67
38.67
40.00
43.00
43.67
43.67
44.00
44.00
44.00
44.67
44.67
45.00
45.00
46.00
46.00
46.00
46.33
46.67
46.67
46.67
47.33
47.33
47.33
47.67
47.67
47.67
47.67
47.67
47.67
48.00
48.00
48.00
48.00
48.00
48.00
48.67
48.67
48.67
48.67
48.67
• = No data
EMSL-LV Intel-comparison

Data sorted
Tag Lab
x OZ
x BG
x n
x NB
x JS
U NZ
U CC
EZ
RU
DH
OO
LT
BI
PB
DO
AY
AB
RH
NI
BW
QK
QL
FE
EW
QM
CK
AK
SS
PX
PW
N
EH
AL
RY
RR
M
HI
GE
DL
SM
RK
LF
L
A
Average
49.00
49.00
49.00
49.00
49.33
49.33
49.33
49.33
49.67
49.67
49.67
49.67
49.67
49.67
49.67
49.67
49.67
49.67
49.67
50.00
50.00
50.00
50.00
50.00
50.33
50.33
50.33
50.33
50.33
50.33
50.33
50.33
50.33
50.67
50.67
50.67
50.67
50.67
51.00
51.00
51.00
51.00
51.00
51.00
Study: Gamma in Water, 14-Feb-1992

by Laboratory Average
Tag Lab
T
HE
GI
BB
Y
PQ
J
BL
U
OB
MS
GL
FZ
EL
EA
DG
CO
AU
AI
MT
MP
KL
CX
BO
SF
RZ
QZ
PM
LA
KX
HP
DM
CS
SI
QB
OA
DD
BM
Q
1C
D
CP
CA
AW
Average Tag
51.00
51.33
51.33
51.33
51.33
51.33
51.67
51.67
51.67
51.67
51.67
51.67
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.00
52.33
52.33
52.33
52.33
52.33
52.33
52.33
52.33
52.67
52.67
52.67
53.00
53.00
53.33
53.33
53.67
53.67
54.00
54.00
54.00
54.00
54.00
54.00
submitted TAG SYMBOLS ft = Above
0 s Insufficient data x s Determined to be an outlier & = Below



Lab
AF
R
MA
FJ
C
AE
QP
PD
OL
EX
CE
BH
W
SC
NJ
ME
KM
KF
HL
DT
DE
X
QT
NP
JE
IU
HK
FL
E
SK
MQ
DR
O
FU
RO
JR
I
CJ
RQ
EB
CQ
BK
AP
AJ
control limit
control limit
-------
             EMSL-LV Intercomparison Study: Gamma in Water, 14-Feb-1992
                                                                     36/43
Cesium-137
Average
Tag
  Data sorted by Laboratory Average
Lab   Average	Tag	Lab |  Average
                    Tag
                       Lab
   54.33
   54.33
   54.67
   55.00
   55.00
   55.00
   55.67
           QJ
           K
           Z
           8
           PV
           HJ
           SY
        55.67
        56.00
        56.00
        56.00
        56.33
        56.33
        57.33
        57.67
EN
SN
OM
NH
SR
RN
BA
SV
 57.67
 58.00
 59.33
 59.33
 60.00
 60.67
 81.00
373.67
tr
tr
tr
tr
tr
BN
ST
PP
OT
AN
BC
LE
SU
             Frequency distribution of responding labs(expected prec. vs known value)
 10-
     -6
     -4  exp.prec.  -2          known          +2  exP-Prec-  +4
                              value

  Frequency distribution of responding labs(std. dev. vs mean value)
 10-
                       std. dev.  -2
                                            mean
                                            value
                                             +2   std. dev.
• = No data submitted
0 = Insufficient data
                       TAG SYMBOLS
                 x = Determined to be an outlier
                                              = Above control limit
                                              s Below control limit
-------
             EMSL-LV Intercomparison Study:  Gamma in Water, 14-Fcb-1992
                                  37/43
Barium-133'                         Statistical Summary                      176 Participants
The known value of this nuclide is 76.0 pCi/1 with an expected precision of 8.0; the control limits
are 62.1 to 89.9; the warning regions are 62.1 to 66.7 and 85.3 to 89.9
21 (11.9 %) Failed to respond ...
11 (6.3 %) Outliers '
3(1.7 %) Out of control •
     but not an outlier


         Statistic
               • 127(72.2 %) Within all limits
Respondents
* 14(8.O %) 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
     76.26
     38.75
   1501.72
     50.82
      0.34
      0.01
     75.67
     -0.44
     -0.01
   Grand Avg 75.06
                5.77
               33.28
                7.68
               -1.23
               -0.16
               75.83
               -0.22
               -0.03
14(9.O %) More than 3 norm. S.D.
14(9.O %) Between 2 and 3 norm. S.D. •
            .89(57.4 %) Within 1 norm. S.D.
            !               of known value
     38(24.5 %) Between 1 and 2 norm. S.D.
-------
387
43 EMSL-LV Intel-comparison Study : Gamma in Water, 14-Feb-1992

Barium-133

Lab
A
AB
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

Res. 1
75.0
74.0
69.0
73.0
71.0
65.0
75.0
85.0
84.0
69.0
80.0
79.0
73.0

73.0
72.0
79.0
6i.o
75.0
77.0
78.0
76.0
77.0
78.0
71.0
13.0
76.0
80.0
58.0
89.0
68.0
69.0
63.0
80.0
74.0
72.0
74.0
68.0
72.0
72.0
80.0
69.0
73.0
80.0

Res. 2
76.0
71.0
66.0
72.0
68.0
60.0
75.0
90.0
83.0
69.0
72.0
79.0
85.0

69.0
72.0
77.0
52.0
75.0
78.0
77.0
74.0
78.0
71.0
73.0
1UO
81.0
77.0
57.0
86.0
83.0
61.0
72.0
80.0
76.0
71.0
76.0
66.0
74.0
73.0
86.0
69.0
76.0
82.0

Res. 3
73.0
76.0
68.0
68.0
70.0
62.0
76.0
84.0
88.0
69.0
71.0
76.0
72.0

74.0
71.0
77.0
46.0
73.0
79.0
80.0
81.0
78.0
83.0
70.0
« 12.0
80.0
80.0
62.0
88.0
76.0
68.0
75.0
80.0
79.0
69.0
77.0
67.0
74.0
73.0
83.0
70.0
66.0
79.0
• s No data submitted
0 s
Insufficient
data
X 3
Exper.
Sigma
1.53
2.52
1.53
2.65
1.53
2.52
0.58
3.21
2.65
0.00
4.93
1.73
7.23
'
2.65
0.58
1.15
&?t
1.15
1.00
1.53
3.61
0.58
6.03
1.53
1,00
2.65
1.73
2.65
1.53
7.51
4.36
6.24
0.00
2.52
1.53
1.53
1.00
1.15
0.58
3.00
0.58
5.13
1.53
Rnganal
(R + SR)
0.222
0.369
0.222
0.369
0.222
0.369
0.074
0.443
0.369
0.000
0.665
0.222
0.960

0.369
0.074
0.148
0,51?
0.148
0.148
0.222
0.517
0.074
0.886
0.222
0.148
0.369
0.222
0.369
0.222
1.205
0.591
0.886
0.000
0.369
0.222
0.222
0.148
0.148
0.074
0.443
0.074
0.738
0.222
Normalized deviation
Average
74.67
73.67
67.67
71.00
69.67
62.33
75.33
86.33
85.00
69.00
74.33
78.00
76.67
•* f
72.00
71.67
77.67
49.33
74.33
78.00
78.33
77.00
77.67
77.33
71.33
12.00
79.00
79.00
59.00
87.67
75.67
66.00
70.00
80.00
76.33
70.67
75.67
67.00
73.33
72.67
83.00
69.33
71.67
80.33
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
-0.09
-0.30
-1.60
-0.88
-1.17
-2.76
0.06
2.44
2.15
-1.31
-0.16
0.64
0.35

-0.66
-0.74
0.56
-$m
-0.16
0.64
0.71
0.42
0.56
0.49
-0.81
-13J8
0.85
0.85
-3.48
2.73
0.13
-1.96
-1.10
1.07
0.27
-0.95
0.13
-1.75
-0.37
-0.52
1.72
-1.24
-0.74
1.14
ft s Above
•It s Below
-0.29
-0.51
-1.80
-1.08
-1.37
-2.96
-0.14
2.24
1.95
-1.52
-0.36
0.43
0.14
•
-0.87
-0.94
0.36
-6.77 X
-0.36
0.43
0.51
0.22
0.36
0.29
-1.01
'13.86 X
0.65
0.65
-3.68 U
2.53
-0.07
-2.17
-1.30
0.87
0.07
-1.15
-0.07
-1.95
-0.58
-0.72
1.52
-1.44
-0.94
0.94
control limit
control limit
-------

EMSL-LV Intercomparison Study: Gamma
in Water, 14-Feb-1992
39/43
f Barium-133

Lab
BO
DT
E
EA
EB
EH
EL
EN
EW
EX
EZ
FE
FJ
FL
FU
FZ
GE
GI
GL
HE
HI
HJ
HK
HL
HP
HU
I
1C
H '
IU
J
JE
ao
JR
JS
K
KF
'JQGl
KL
KM
KX
L

Res. 1
',,„ -,,,,.
68.0
79.0
76.0
77.0
73.0
79.0
80.0
72.0
80.0
78.0
62.0
80.0
86.0
77.0
83.0
66.0
75.0
76.0
77.0
69.0
83.0
76.0
75.0
72.0
, '
82.0
79.0
' •• - £0 •••••••
74.0
78.0
81.0
,
67.0
56.0
71.0
77.0

76.0
69.0
91.0
69.0

Res. 2
- - ; /«*„
67.0
82.0
79.0
79.0
73.0
77.0
86.0
71.0
84.0
61.0
67.0
68.0
76.0
76.0
79.0
76.0
75.0
72.0
76.0
81.0
82.0
75.0
75.0
74.0
,
71.0
76.0
" •"&0/"-;;
79.0
77.0
80.0
''
69.0
51.0
80.0
86.0

76.0
70.0
89.0
68.0

Res. 3
wi~-
72.0
77.0
78.0
79.0
76.0
76.0
82.0
71.0
85.0
59.0
63.0
78.0
80.0
75.0
81.0
73.0
74.0
76.0
77.0
77.0
79.0
77.0
75.0
73.0
if, ' < '"'
80.0
76.0
', //> &o'~
77.0
78.0
71.0
f *,
67.0
65.0
80.0
89.0

71.0
66.0
84.0
66.0
• = No data submitted
0 B
Insufficient
data
x =
Exper.
Sigma
ffff S s
2.65
2.52
1.53
1.15
1.73
1.53
3.06
0.58
2.65
10.44
2.65
6.43
5.03
1.00
2.00
5.13
0.58
2.31
0.58
6.11
2.08
1.00
0.00
1.00
'
5.86
1.73
,,, , HM
2.52
0.58
5.51

1.15
7.09
5.20
6.24

2.89
2.08
3.61
1.53
Rng anal
(R + SR)
; ',';f''"
0.369
0.369
0.222
0.148
0.222
0.222
0.443
0.074
0.369
1.767
0.369
0.886
0.738
0.148
0.295
0.738
0.074
0.295
0.074
0.886
0.295
0.148
0.000
0.148
"
0.812
0.222
- &0?4
0.369
0.074
0.738
'
0.148
1.064
0.665
0.886

0.369
0.295
0.517
0.222
Normalized deviation
Average
'/#/"', ' '", ,, '»;
69.00
79.33
77.67'
78.33
74.00
77.33
82.67
71.33
83.00
66.00
64.00
75.33
80.67
76.00
81.00
71.67
74.67
74.67
76.67
75.67
81.33
76.00
75.00
73.00
, ,, ,
77.67
77.00
' i&
76.67
77.67
77.33

67.67
57.33
77.00
84.00

74.33
68.33
88.00
67.67
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
'' "f'f- '"'' ', ''
-1.31
0.92
0.56
0.71
-0.23
0.49
1.65
-0.81
1.72
-1.96
-2.40
0.06
1.21
0.20
1.29
-0.74
-0.09
-0.09
0.35
0.13
1.36
0.20
-0.01
-0.45
...... '" "
0.56
0.42
+1$M
0.35
0.56
0.49

-1.60
-3.84
0.42
1.93

-0.16
-1.46
2.80
-1.60
ft s Above
11 s Below
' ' '', *
-1.52
0.72
0.36
0.51
-0.43
0.29
1.44
-1.01
1.52
-2.17
-2.60
-0.14
1.01
0.00
1.08
-0.94
-0.29
-0.29
0.14
-0.07
1.15
0.00
-0.22
-0.65
*
0.36
0.22
46.09 x
0.14
0.36
0.29
*
-1.80
-4.04 Ji
0.22
1.73
•
-0.36
-1.66
2.60
-1.80
control limit
control limit
-------
40 /
43 EMSL-LV Intel-comparison Study : Gamma in Water, 14-Feb-1992
[ Barium-133
Lab Res. 1
LA
IM
LF
IM
IM
LT
M
MA
ME
MM
MP
MQ
MS
MT
MV
N
KB
NH
NI
NJ
UK
NO
NP
NZ
O
OA
OB
OL
OM
00
OT
OS
PB
FC
PD
PM
FF
PQ
PV
PW
PX
Q
QB
QJ
QK
84.0
118.0
80.0

39.0
88.0
67.0
76.0
74.0

69.0
78.0
64.0
78.0

75.0
46,0
75.0
67.0
69.0


67.0
00,0
77.0
74.0
76.0
68.0
77.0
75.0
86.0

84.0
41.0
81.0
69.0
102,0
72.0
82.0
62.0
74.0
70.0
82.0
76.0
65.0
Res. 2
76.0
10&0
79.0

83.0
88.0
63.0
75.0
76.0

71.0
80.0
72.0
77.0

73.0
40.0
67.0
59.0
67.0

f
81.0
S2X)
77.0
77.0
77.0
70.0
76.0
74.0
79.0

81.0
4Z&
74.0
85.0
93.0
75.0
79.0
64.0
75.0
70.0
83.0
74.0
65.0
Res. 3
83.0
107.0
74.0
'
20.0
87.0
66.0
75.0
74.0

70.0
79.0
67.0
77.0
.•
70.0
49.0
73.0
66.0
73.0


76.0
69.0
76.0
77.0
77.0
72.0
78.0
75.0
100.0
,
74.0
' 4&0X
77.0
83.0
188x0
67.0
79.0
65.0
76.0
72.0
81.0
78.0
65.0
• = No data submitted

Insufficient
data
X.B
Sigma
4.36
100
3.21

8*51
0.58
2.08
0.58
1.15
•"
1.00
1.00
4.04
0.58
.-.-.• .v
2.52
i
-------

EMSL-LV Intercomparison Study: Gamma
in Water,
14-Feb-1992
41/43
Barium-133
Lab
QL
QM
QP
QT
QX
QZ
R
RH
RK
RN
RO
RQ
RR
RS
RU
RY
RZ
S
SA
sc

	
§H>
SF
SH
SI
SK
SM
SN
SR
ss
ST
88
sv
SY
T
U
W
X
Y
Z

Res. 1
81.0
82.0
76.0
75.0

76.0
73.0
73.0
71.0
77.0
70.0
78.0
76.0

69.0
83.0
82.0
75.0
2110
78.0
f
'
79.0

60.0
78.0
75.0
78.0
83.0
75.0
86.0
-, 540.0
72.0
75.0
82.0
70.0
71.0
75.0
73.0
73.0

Average

1.67
Res. 2
83.0
91.0
79.0
73.0
•"
77.0
72.0
74.0
74.0
76.0
69.0
78.0
77.0

71.0
74.0
81.0
76.0
' 43»0
78.0
s
•
79.0
' '
59.0
80.0
75.0
81.0
74.0
79.0
82.0
, 532,0
71.0
83.0
79.0
70.0
77.0
73.0
70.0
70.0

Tag
x
Res. 3
81.0
87.0
73.0
75.0
- , ' :; ,
78.0
74.0
70.0
76.0
82.0
67.0
78.0
77.0
',
68.0
78.0
80.0
77.0
'- ; &£0
76.0
t f f
s f
79.0
',''' • , ' '
59.0
75.0
73.0
71.0
76.0
78.0
87.0
-,' ;'6MO
70.0
90.0
83.0
75.0
70.0
73.0
72.0
72.0
Data
Exper.
Sigma
1.15
4.51
3.00
1.15
';
1.00
1.00
2.08
2.52
3.21
1.53
0.00
0.58
'
1.53
4.51
1.00
1.00
- 10.00
1.15


0.00
,
0.58
2.52
1.15
5.13
4.73
2.08
2.65
' 8x00
1.00
'"/"/•ft,
7.51
2.08
2.89
3.79
1.15
1.53
1.53
Rng anal
(R + SR)
0.148
0.665
0.443
0.148
f ' f ff
0.148
0.148
0.295
0.369
0.443
0.222
0.000
0.074
' *
0.222
0.665
0.148
0.148
'' 1J08
0.148
..
'
0.000
,
0.074
0.369
0.148
0.738
0.665
0.295
0.369
,, ,1.346 -
0.148
1.205
0.295
0.369
0.517
0.148
0.222
0.222
Average
81.67
86.67
76;00
74.33
' •" f
77.00
73.00
72.33
73.67
78.33
68.67
78.00
76.67
>'
69.33
78.33
81.00
76.00
3fc00
77.33

'
79.00

59.33
77.67
74.33
76.67
77.67
77.33
85.00
&32.00
71.00
82.67
81.33
71.67
72.67
73.67
71.67
71.67
Normalized
(grand-avg)
1.43
2.51
0.20
-0.16
"'
0.42
-0.45
-0.59
-0.30
0.71
-1.39
0.64
0.35

-1.24
0.71
1.29
0.20
' -9.54
0.49

'
0.85
'
-3.41
0.56
-0.16
0.35
0.56
0.49
2.15
98,93
-0.88
1.65
1.36
-0.74
-0.52
-0.30
-0.74
-0.74
deviation
(known) Tag
1.23
2.31
0.00
-0.36
*
0.22
-0.65
-0.79
-0.51
0.51
-1.59
0.43
0.14
*
-1.44
0.51
1.08
0.00
•9,74 X
0.29

* -
0.65
•
-3.61 H
0.36
-0.36
0.14
0.36
0.29
1.95 •
98.73 x
-1.08
', ' *
1.44
1.15
-0.94
-0.72
-0.51
-0.94
-0.94
sorted by Laboratory Average
Lab Average
n
• = No data submitted
0 s
Insufficient data
X
12.00
Tag
x
Lab Average Tag Lab
BW
TAG SYMBOLS
s Determined to be an outlier
31.00
x SA
It s Above control limit
•!)• 3 Below control limit
-------
42/43
Barium-133

Average
32.67
41.67
47.00
49.33
53.67
57.33
59.00
59.33
62.33
63.67
64.00
64.00
65.00
65.33
66.00
66.00
67.00
67.67
67.67
67.67
67.67
68.33
68.67
69.00
69.00
69.33
69.33
69.67
69.67
70.00
70.00
70.00
70.67
70.67
71.00
71.00
71.33
71.33
71.33
71.67
71.67
71.67
71.67
71.67
• = No data
EMSL-LV Intercomparison

Data sorted
Tag Lab
x LR
x PC
x NB
x BG
x NZ
U JS
U CC
U SI
AJ
PW
NI
FE
QK
M
EZ
CK
D
MS
L
JR
AE
KM
RO
DT
AP
RU
DH
NJ
AI
OL
MP
CO
Q
CS
sv
AF
PQ
EW
BO
Z
Y
U
NH
GE
Average
71.67
71.67
72.00
72.33
72.67
72.67
72.67
- 73.00
73.00
73.33
73.67
73.67
73.67
74.00
74.33
74.33
74.33
74.33
74.33
74.67
74.67
74.67
74.67
74.67
74.67
75.00
75.00
75.33
75.33
75.33
75.67
75.67
75.67
76.00
76.00
76.00
76.00
76.00
76.00
76.33
76.67
76.67
76.67
76.67
Study: Gamma in Water, 14-Feb-1992

by Laboratory Average
Tag Lab
DL
BB
BA
RH
W
N
DE
R
HP
DD
X
RK
AB
EH
SM
QT
KL
BH
AU
OO
NP
ME
GL
GI
A
PX
HL
MA
FJ
AK
HI
CX
CJ
S
QP
QJ
OA
HK
FU
CQ
SN
RR
OB
O
Average Tag
76.67
76.67
76.67
77.00
77.00
77.00
77.00
77.00
77.33
77.33
77.33
77.33
77.33
77.33
77.33
77.67
77.67
77.67
77.67
77.67
77.67
77.67
77.67
78.00
78.00
78.00
78.33
78.33
78.33
78.33
79.00
79.00
79.00
79.00
79.00
79.33
79.67
80.00
80.00
80.33
80.67
81.00
81.00
81.00
submitted TAG SYMBOLS tt s Above control
0 s Insufficient data x s Determined to be an outlier II s Below control



Lab
IU
HE
AY
QZ
OM
K
1C
BL.
ss"
sc
PD
MT
JE
EL
BN
SR
SK
LF
J
I
EA
BM
BC
RQ
BI
AW
RY
RN
EB
BK
SF
PM
MQ
CA
C
E
PB
PV
CP
DM
FL
RZ
LA
FZ
limit
limit
-------
             EMSL-LV Inter-comparison Study: Gamma in Water, 14-Feb-1992
                                                                     43/43
Barium-133
Average
Tag
  Data sorted by Laboratory Average
Lab   Average	Tag	Lab | Average
                    Tag
                       Lab
   81.33
   81.33
   81.67
   82.00
   82.67
   82.67
           T
           HJ
           QL
           QB
           SY
           EN
        83.00
        83.00
        84.00
        85.00
        85.00
        86.33
        86.67
EX
DG
KF
ST
AN
AL
QM
 87.67
 87.67
 88.00
 88.33
 99:33
110.00
532.00
x
x
X
LT
CE
KX
OT
PP
LE
SU
             Frequency distribution of responding labs(expected prec. vs known value)
 10-
     -6
                      exp. prec.  "
                                           known
                                            value
                                            +2  exp. prec.
                Frequency distribution of responding labs(std. dev. vs mean value)
     -6
• = No data submitted
0 = Insufficient data
                       TAG SYMBOLS
                     Determined to be an outlier
                                            ft s Above control limit
                                            •U = Below control limit
-------