&EPA
           United States
           Environmental Protection
           Agency
          Office of Research and
          Development
          Washington, DC 20460
EPA/600/R-99/020
February 1999
Gamma in Water
Performance
Evaluation Study
           A Statistical Evaluation of
           the November 6, 1998 Data

-------
          Gamma in Water
    Performance Evaluation Study
         November 6, 1998
   Environmental Protection Agency
National Exposure Research Laboratory
   Environmental Sciences Division
         Las Vegas, Nevada

-------
            UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
                        OFFICE OF RESEARCH AND DEVELOPMENT
                      NATIONAL EXPOSURE RESEARCH LABORATORY
                     ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
                                  P.O. BOX 93478
                            LAS VEQAS, NEVADA 89193-3478
                                  (702/798-2100)
Dear Participant,
   Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Gamma in Water; November 6, 1998.
   The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.

   The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision:  One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.

   Please take a few minutes to review this report and the analytical data your
laboratory submitted to us.  If there are any apparent discrepancies, please notify us
immediately.

   We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
   If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
                                          Sincerely,
                                          Stephen Pia
                                          Team Leader
                                          RADQA Program
Enclosure

-------
               NOTICE

This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.

-------
           ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998         1/37


   The following pages consist of separate sections for each of the nuclides in this study with four
parts per section.  After the first, each part is separated from the next by a new page or a thick
horizontal bar.  The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.

   The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value.  If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.

   The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late.  The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
   The table in the center shows a number of statistical quantities calculated from the  submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value  divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
   The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test.  The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. 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.  A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom.  If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
   The third part is a three-column listing of result  average, tag symbol, and lab-code in average
order excluding those labs not responding properly.  In this order, all outliers and out-of-control
results appear at the top or bottom of the list.

   The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision.  The second  chart places  the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation.  In  both cases, a bar includes those results within
0.1 unit up to the maximum of six.  Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.

-------
2/37        ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998


     The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
  the range values. The range is the difference between the maximum and minimum results for the
  laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
  results).  The standard error of the range is calculated by multiplying the mean range by 2.576(for
  three results), subtracting the mean range from this product, and dividing the result by 3. If the
  range is greater than the mean range, then the range analysis is calculated by subtracting the
  mean range from the range, dividing the result by the standard error of the range and adding 1.
  If the mean range is greater than or equal to the range, then the range analysis is calculated by
  dividing the range by the mean range.

     The normalized deviation of the mean from the grand average is calculated from the deviation
  of the mean from the grand average and the standard error of the mean values.  The deviation of
  the mean from the grand average is calculated by subtracting the grand average from the
  average of the laboratory's three results. The standard error of the mean is calculated by
  dividing the expected precision by the square root of 3(the number of results). The normalized
  deviation of the mean from the grand average is calculated by dividing the deviation of the mean
  from the grand average by the standard error of the mean.

     The normalized deviation of the mean from the known value is calculated from the deviation of
  the mean from the known value and the standard error of the mean values.  The deviation of the
  mean from the known value is calculated by subtracting the known value from the average of the
  laboratory's three results.  The standard error of the mean is calculated by dividing the expected
  precision by the square root of 3(the number of results).  The normalized deviation of the mean
  from the known value is calculated by dividing the deviation of the mean from the known value by
  the standard error of the mean.
     A complete explanation of the statistical calculations involved in the report may be found in
  the Environmental Radioactivity Performance Evaluation Studies Program information brochure
  [Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.

-------
             ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998
                                   3/37
Cobalt-60                           Statistical Summary                      166 Participants
The known value of this nuclide is 38.0 pCi/1 with an expected precision of 5.0; the control limits
are 29.3 to 46.7; the warning regions are 29.3 to 32.2 and 43.8 to 46.7
29(17.5 %) Failed to respond
5(3.O %) Outliers •
         Statistic
                127(76.5 %) Within all limits
                                                                     5(3
Respondents
   .0 %) In warning zone
       but within control


          Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
     44.12
     67.92
   4613.47
    153.96
     16.10
      0.09
     38.00
      0.00
      0.00
Grand Avg 38.17
             2.38
             5.67
             6.24
             0.44
             0.07
            38.00
             0.00
             0.00
6(4.4 %) More than 3 norm. S.D. ..^
4(2.9 %) Between 2 and 3 norm. S.D.
            11O(8O.3 %) Within 1 norm. S.D.
                           of known value
     17(12.4%) Between 1 and 2 norm. S.D.

-------
4/37 ESD-LV Performance
Evaluation: Gamma in Water, 6-Nov-1998

Cobalt-60

Lab
A
AE
AF
AH
**^r 2*'^'^ s.

Res. 1
40.0
39.0
41.0
37.0
'^^S^ij s A >i- 1 ^ ''"•ip'-ft s

Res. 2
39.0
41.0
39.0
33.0
s"^ ^"^^l ""^Z?

Res. 3
39.0
37.0
39.0
31.0
^S1^?^* i ("^S^S^SSi^^s'.;
Exper.
Sigma
0.58
2.00
1.15
J1.06
^ s\ ^^i*y%^'^^ .^ %
Rng anal
(R + SR) Average
0.118
0.473
0.236
0.709
^^^CCCj^?*./^.
j***"/i ^4 <<&^5%yp^,i^> i&V'^^^is^l^^ t^;f j^f':?:^',:/ "C^ ^rVr
AJ
AK
AL

11 jk^rt * %
Vft**&
AU
AW
AY
AZ
BA
BB
BC
,. f \ "
''^R^i ''
" iP^F "s
BH
BK
BL
BM
BN
BO
C
^CA
lC$Xj'
D
DD
DE
DH
DO
DR
DT
E
"•** A'*
* JuLfjL*^

EB
EL
*. p. -*.•»•. f
viEW
EX
46.0
39.0
43.0

: si- \ s^V JsC^:S\o^ ,'' <
^•ftSvXcxC^^'f-1?
38.0
37.0
34.0
36.0
36.0
39.0
35.0
"•£?; „ *>; y^F-^yvp/Vt^'s-j',
' fV(t ^ ' /^^fei^X « * '
\ ^ \s^£j^ ^X^*^, [^ s
38.0
40.0
42.0
37.0
45.0
38.0
37.0
40.0
I^M^W"^
'36.6
42.0
38.0
37.0
38.0
^!'?2l'>0v'^
38.0
38.0
36.0
38.0
40.0
41.0
35.0
38.0
-- -s-i:,>;:~,^f^?-1
'"•' * ••* < ''•' ViVs* s'' ' **

43.0
38.0
Vff SS.SV WSS^SSS SJ ^.^ff^ff,-.
'"^'^"^'
35.0
41.0
39.0
44.0

i'^X ). '" ' '''VV * '
%*?.-^ftrc*t
37.0
37.0
34.0
35.0
37.0
38.0
35.0
;, w.f vs%ss«/*^.ssyw
X%s ' ^Xxs. '•''
"•v¥Xs'*^ /'5f'!'\C
37.0
40.0
44.0
38.0
37.0
38.0
35.0
	 38.0
's 'V^s-V v s>""?A
40.0
40.0
46.0
40.0
37.0
K§|2|$4
38.0
37.0
37.0
36.0
36.0
36.0
40.0
40.0
• Y> '^'-L^C^
> I i '•"•. V ^ * NS ^

44.0
37.0
\ * i \ XA As * *y*\* * *
~ Af^->*'"
38.0
43.0
38.0
38.0

s 'Vsjf'^VfvS*'1'^ &\ & '
'-''ST* t^Swfi!^
35.0
37.0
33.0
32.0
34.0
39.0
35.0
ssss*ss^.ys,Mws v<\ s s>s ^J^ 	 jw.^.%
JSl •.* *s % s\\ %k«.'V>'*As '
v &•> ssX^C^s"«'/ '^Hi*
38.0
41.0
37.0
38.0
35.0
37.0
35.0
_ 3Z-P~.
s? ^^^^;
37.0
37.0
41.0
39.0
37.0
5[f<^19:0"^
36.0
35.0
37.0
37.0
39.0
40.0
36.0
38.0
j5»» ^'.^vvjjg; j,* ^
>s^" j" ff X'X' %^'^ ^^'X +*'' ""

43.0
36.0
r*Vf'f s--^ tfffff.fH.lfffi,vfyM^>
A^. ^;...,-;^;-s^
34.0
• s No data submitted
0 =
Insufficient
data
X S
2.52
0.58
3.21

t \ S-X y$FP^\ J. '•• '•<^ ^
A' ' • *i\'' 'C \*v',\
1.53
0.00
0.58
2.08
1.53
0.58
0.00
AN s-s^ssvwy,«s..^s,(.'.S'ij. ^ f.
'*" "•  •* i&rz&tytt* ,tSSf
'^''^'^'s &]f£&''s\ ,""' ••""

0.58
1.00
*thV-f ? ^WfS^wi^'V"*** »w«
A^X1"-". /;i-
2.08
0.591
0.118
0.709

' vs"1' t v< sv'
/^x-^^^'l ^
0.354
0.000
0.118
0.473
0.354
0.118
0.000
fff"T^'v^' ^'^
">''&' ""Vv*
v rtit^'^^w, v,'
0.118
0.118
0.827
0.118
1.345
0.118
0.236
0.354
'->H^;*t
0.473
0.591
0.945
0.354
0.118
?^2S6
0.236
0.354
0.118
0.236
0.473
0.591
0.591
0.236
Kr-lt-niStysA'tj
""^ ** t '/••jj'f' t •*•*•

0.118
0.236
ASSSSV SS^SSSV^.SSS,S>>V
•-'*• -;-;:*, -f
0.473
39.33
39.00
39.67
	 33.67
••: •.-,, s^ ' ^> ^t*^^^^ '^vjy^ ^
•Jfcyv^H'^' <•->' K
43.33
38.67
41.67

Vfjj^ <^' v' S''%V" ••, •i'C ' ' '^ v '
'•fr1^^,.^" ~'o?!, J'^,^
36.67
37.00
33.67
34.33
35.67
38.67
35.00
SSA.S.SSSVV A sw'^'v ™ /wv,^sw
^A ^ ^ J A ^s s* % % j" ** '
'%% s/ ''S ss .- '^ A'w rt\s'1™
37.67
40.33
41.00
37.67
39.00
37.67
35.67
	 ,3833
t£ f *' f,'-?f V-'W.i"' %VvX X* ^ s ^
•j^1' 4^>?'s ^^x 'tt ~" '"'yi' *** ""/•
37.67
39.67
41.67
38.67
37.33
,/iX^i3l^
37.33
36.67
36.67
37.00
38.33
39.00
37.00
38.67
r-,,'-,-"-'"?^"-^:^"
' i "j, ••""••' f-^-f"^. ^^"'""^ ^Ti" '

43.33
37.00
v v ,'*''*• r"%"*s !'w/ivx'5s^!"i?7s-s^
,- ^'fP -3'.y IH^Mfue;
35.67
TAG SYMBOLS
Determined to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
0.40
0.29
0.52
_-1.56
•^ ^f^ffi-"^ v^f^fvf^ffy "A s> ^
"Vj -^r'V- :''^"';
1.79
0.17
1.21

Jis s^1" > V&s ^ s •>"' s> ^
vfVS.if1' • v f '• > '' "
-0.52
-0.40
-1.56
-1.33
-0.87
0.17
-1.10
s A- f.fffffffff^a^f.^yyvjvf ss %SW^
< '"'' i* ** \ ""''"•' v s^'s f
v^'f ?C '''^sv^J-^' s' ^ /s ^.''! "
-0.17
0.75
0.98
-0.17
0.29
-0.17
-0.87
0.06
^T^~l!'*l
-0.17
0.52
1.21
0.17
-0.29
^"' 'rt*4*< ei'--' r"'^*j'
^, ss ^?v^lO'' **%*<&'
-0.29
-0.52
-0.52
-0.40
0.06
0.29
-0.40
0.17
^ V"-V ^5T 1->^C *
i" ' *V''"''^ ''s'"'^ ^^ ' ' X^^v

1.79
-0.40
«V^. ^VJ^VVAVjS SSSSAS-S^^SV f
K^v;4Vvr -<:'-^^
-0.87
ft s Above
li = Below
0.46
0.35
0.58
-1.50
SSS*.SSS^ •..SSVS.JSS^VV V-. SS.WAS.-y. VSSS
f '•:><*Kl,' - ;:- *
1.85
0.23
1.27

' ""'••'?'•> ' *IA Ji1%
x&,'^v ,' : ,'v; , .
-0.46
-0.35
-1.50
-1.27
-0.81
0.23
-1.04
vq.tf*f}ftjr.ftftv. ^ ^ f.Mf. f,f,
•. ^ ff ' *ff* jL's , %
%*N .",<£, -Xj^^ s TA "
-0.12
0.81
1.04
-0.12
0.35
-0.12
-0.81
0.12
PfP^'W?^
-0.12
0.58
1.27
0.23
-0.23
MX:: x;,v;
-0.23
-0.46
-0.46
-0.35
0.12
0.35
-0.35
0.23
JT;/";' ~,~ yr " " '" "
' "•"^ ' 'J%3f ^}>^ v •,' ^ 9 '"" *

1.85
-0.35
••SSS'S V .SSSSSSSjSSS S ^ •• '
"''•''**'•.*•.'• ^ " ,
-0.81
control limit
control limit

-------
    ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998
                                                                                         6/37
Cobalt-60

Lab     Res. 1
                  Res. 2
                   Res. 3
         Exper.
         Sigma
        Rnganal
       (R +  SR)
          Average
        Normalized deviation
        (grand-avg)  (known) Tag
FE
FJ
FL
JE
JG
JM
JS
JY
K
KH
KL
KX
L
LE
LF
LR
M
MP
MT
MV
MX
N
NH
NJ
OB
OM
OT
P
37.0
38.0
35.0
40.0
45.0
37.0
38.0
40.0
39.0
38.0
38.0
37.0
40.0
38.0
39.0
36.0
34.0
41.0
38.0
40.0
37.0
40.0
36.0
38.0
38.0
46.0
38.0
38.0
                    37.0
                    38.0
                    39.0
40.0
38.0
38.0
1.73
0.00
2.08
0.354
0.000
0.473
38.00
38.00
37.33
-0.06
-0.06
-0.29
                    38.0
                    41.0
                    37.0
                    38.0
                    39.0
                    37.0
                    40.0
                    38.0
                    39.0
                    37.0
                    38.0
                    38.0
                    37.0
                    39.0
                    41.0
                    38.0
                    41.0
                    38.0
                    39.0
                    35.0
                    37.0
38.0
44.0
38.0
38.0
40.0
37.0
41.0
37.0
37.0
37.0
47.0
37.0
37.0
40.0
38.0
38.0
38.0
37.0
38.0
37.0
37.0
1.15
2.08
0.58
0.00
0.58
1.15
1.53
0.58
1.15
1.73
5.20
1.00
0.58
3.21
1.73
0.00
1.53
0.58
1.00
1.00
0.58
0.236
0.473
0.118
0.000
0.118
0.236
0.354
0.118
0.236
0.354
1.120
0.236
0.118
0.709
0.354
0.000
0.354
0.118
0.236
0.236
0.118
38.67
43.33
37.33
38.00
39.67
37.67
39.67
37.67
37.67
38.00
41.00
38.00
36.67
37.67
40.00
38.00
39.67
37.33
39.00
36.00
37.33
 0.17
 1.79
-0.29
-0.06
 0.52
-0.17
 0.52
-0.17
-0.17
-0.06
 0.98
-0.06
-0.52
-0.17
 0.64
-0.06
 0.52
-0.29
 0.29
-0.75
-0.29
                    39.0
                    45.0
                    36.0
                    38.0
37.0
45.0
39.0
41.0
1.00
0.58
1.53
1.73
0.236
0.118
0.354
0.354
38.00
45.33
37.67
39.00
-0.06
 2.48
-0.17
 0.29
 0.00
 0.00
 0.23
 1.85
-0.23
 0.00
 0.58
-0.12
 0.58
-0.12
-0.12
 0.00
 1.04
 0.00
-0.46
-0.12
 0.69
 0.00
 0.58
-0.23
 0.35
-0.69
-0.23
 0.00
 2.54
-0.12
 0.35
0
     No data submitted
     Insufficient data
                       y. s
         TAG SYMBOLS
      Determined to be an outlier
                                ft & Above control limit
                                •II s Below control limit

-------
6/37 ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
.
Cobalt-60
Lab
PD

Res. 1
38.0

Res. 2
40.0

Res. 3
40.0

Exper.
Sigma
1.15

;-S^;/* "''^^v;i >^^ %H- V?r-
PM
PW
PX
Q
QM
QP
QT
QU
QW
QX
QZ
R
RK
RO
38.0
36.0
39.0
39.0
37.0
37.0
35.0
34.0
33.0
40.0
40.0
38.0
42.0
36.0
37.0
36.0
32.0
42.0
39.0
34.0
34.0
32.0
33.0
40.0
40.0
39.0
36.0
36.0
40.0
36.0
39.0
41.0
40.0
32.0
36.0
37.0
34.0
41.0
38.0
38.0
37.0
37.0
1.53
0.00
4.04
1.53
1.53
2.52
1.00
2.52
0.58
0.58
1.15
0.58
3.21
0.58
Rnganal
Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.236

,V - ^ ^jv^^*.^^ M/ <^M.W^W.SWA *% -^ -"'^w r v...
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SD
SF
SI
SM
SN
SR
ss
sv
sx
T
TC
TD
ivrsss*^
* t-**!*t
TO
TQ
TR
TW
U
\UM"
UP
'%w •ii''*
Tv'XJIl\
uv
^ux
"jncc
> # ^-' '*$£ \j<-'f^'y 4$'?
£$?3$^j^>
c '''*" » ¥T*-' v? .*&s
40.0
^?al|&5'
•*•—"-

36.0
40.0
37.0
42.0
37.0
38.0
38.0
39.0
37.0
38.0
37.0
38.0
"srj^Kyr^*^^.'^
i^'ST , ~ V'if^4-£!
29.0
37.0
30.0
44.0
40.0
j--~y^^7^
4o!o
A*, ^ ^X"*1 ">"*wys ^i
vf ; Vf r ^T-
37.0
_36.0
;t; m'v?^/,A ',,
^ ^ «*.>" v; " /••
** * f'"'1 *' ''.'/••'• ^^ * ^ ^
••'' ' *w^sfX<;^«<4&vx
41.0
/ ''£"'??* ^^^(\^<^
37.0
38.0
36.0
44.0
36.0
36.0
32.0
41.0
39.0
40.0
37.0
38.0
49.0
" •>-™'^*Tr^j"TO~'
'*'^' V^?-'? VH>'
54.0
37.0
30.0
41.0
40.0
A»%^«. ^.•.•^-^;f.ff^^fy-f-
'"£i£*'JN^
38.0
' " * 'V"*^* * ws ^
,v , \Y}^ "M'",
37.0
39.0
";"7 i-^Cu1
•• «*V "''•."}•, ^'%\ fv
'-^'^^
*, "t"^-/1'"^?^
39.0
•$." ^f^s^y-y^,
' 'JwA\ J. At / l\fj&
" 31.0
37.0
35.0
41.0
42.0
32.0
36.0
39.0
38.0
38.0
37.0
37.0
41.0
;ri'TF-T'y~, ~ ^
,«.. "/'^Jf'o'V
50.0
34.0
28.0
51.0
38.0
^S-t:^^
37.0
'* , - (XX-w* ,* " * "-A
^--' ^ ;*/x,^
36.0
37.0
•s';:%'j?, • l'~,.
• = No data submitted
0 =
Insufficient
data
X =
"•"•* f- fs-vi' ' ' •.
*^'^-x '•&?'• •£ <'% ' ' ' S'A%
I/ ***• ^ ^* J!> % , j; v^;'
1.00
^i^S?
0.58
1.00
2.65
3.51
3.46
2.65
3.06
1.53
0.58
1.53
0.58
0.58
5.69
«. «WA..,V™,X^ Aw^yv,,^
^'* ^"^^^vir'^"'
13.43
1.73
1.15
5.13
1.15^
FTlBJy-  ;;^
V ' ""'f '" 'V's " " , ~" ^
0.236
^/i&KJ^P
"aii's
0.236
0.591
0.827
0.709
0.591
0.709
0.354
0.118
0.354
0.118
0.118
1.570
*~; T5""'^/""',/^-' ™^f
-- :\^j'"''-"f'-~ '->-«",
4.721
0.354
0.236
1.345
0.236
XT^^i'^
0.354
'"•?• •- -,!»-' 4, ,,.-,: •;';,'"-;.
"'/l?/^5', -- "'?•»'• 'r
0.118
0.354
% '^'^ '' "'?'i : l
* V>"C *'
tw, SS's.' ,"*}/-' <*
; ^A* ', *, ' v
'' !0'v ^/f'"!'' '•' -"
40.00
iiiasli?
36.67
37.00
37.00
40.67
40.00
35.00
35.33
39.33
38.67
38.33
37.33
37.33
42.67
t82i$pn3K?$
~'''&'^'^1'".^',
44.33
36.00
29.33
45.33
39.33
(~sj?pp
38.33
\. 'S K ""' *t* '
*^'; - ''>';- v
36.67
37.33
\ , * 1- I..
TAG SYMBOLS
Determined to be an outlier
' s' < *v * , A'<. •••.''
'iflSSS^--'
***'» <*&®£^7,v- "; '"-.vr
\^'^f.^'f": > l> '
2.14
-0.75
-3.06
2.48
0.40
i~-^:<^~^S
0.06
f ' A "' *^"_w, - "SX "• ^
*'-; *"**&. - ;V A-^'
-0.52
-0.29
,'f';*' "i?1-',;', ,
It s Above
II = Below
>> /^^ ' A d| •. V
''" "x':-^ '^'k
- , J'-'; ' ' , >""•';,"
0.69
\§iK*yx"%
-0^46
-0.35
-0.35
0.92
0.69
-1.04
-0.92
0.46
0.23
0.12
-0.23
-0.23
1.62
AAV^^^^v,™ ^AA,' N S^<
v ^v,fF %s's"" "*;' * *
2.19
-0.69
-3.00
2.54
0.46
"fg>n / » : !
0.12
A ' ,•• <"\ ^S % X ' ' ^ '
f\" -'' - • >.
-0.46
-0.23
,.':3- „;>- ' *•''
control limit
control limit

-------
               ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998
                                                                                7/37
 Gobalt-60

 Lab    Res. 1
                     Exper.   Rng anal             Normalized deviation
Res. 2     Res. 3     Sigma   (R + SR)   Average   (grand-avg)  (known) Tag
                                S*» ^^*Vfti^?"^ ^T. ^V>*xs ^4VJ^-i'V|:?*r-f^^'^;'>f ^ ''K^HX ^ <*' "*" ^fi^v
                                0.118       40.67       0.87      6.92
                                            37.00      -0.40
                                            38.67
                                            40.00
                                              W$L-,v ^ ,-<, --N,^-
                                                    1^\-,., \\ \^   V"
  42.0      40.0       5.86     1.570       37.67      -0.17
  39.0      37.0       1.15     0.236       37.67      -0.17
  38.0      36.0       1.15     0.236       36.67      -0.52
  38.0      38.0       0.58     0.118       37.67      -0.17
 vc
 VE
 VH
 VI
41.0
37.0       37.0
39.0       37.0
40.0       41.0
           31.0
           37.0
           36.0
           37.0
  41.0
  37.0
  40.0
  39.0
 0.58
 0.00     0.000
 1.53     0.354
 1.00     0.236
At ^f&w^C* ***?* y&sffpH^ss -"'
\'V * «>j"i% *\^*.*'«•••
                                                                0.17
                                                                0.64
           0.92
          -0.35
           0.23
           0.69
r.ws o
&K*
.^.  .. « ^ A-1
l%|
 ww
5'
 X
 XA
 XB
^ai
 XD
 XF
37.0
                     37.0
  39.0
40.0
37.0
  41.0
  37.0
                 :«^;V^X'l*5s\.^-^SpwTwK" \'U"Y» "'•!,!  -x=v'   ,    >\ s. -' - ~s > -;A«  -VLis",^^"• V^-ok^vvl ~-  «V'
                 .-^»_»,_™ - ""™0;354	"37;g3"""	^.0 29    '" T6.23
                 "~ vxssj^^BSxjft^jj' \-V""'"'"^*"^ " '•Vb™ \»>V ^Ki,-- a **%^*C^",t^ ^^ v^ T"H. ^"^s.^^?1 'v "jv"V^ ^ f *-<^"~>.^. \\w5%
                 ^^S^;M-%^-;^€X- -: \  «\-;v  ;-v-^;^44^,v^^v^fe^5^^
                     38.0       1.00     0.236       38.00      -0.06       0.00
                 ^*vXrt^^*Tyi^'^ h^s*V- -  ;:v-^;- ^M^^V.swv%i*«. -. % •Si'tA ^ •.rfivf'v. sU\  fa' v,V.%«\ 5     •, \-TrffOs'. S •, M.V.   *  %  •. * i -.X  \\ ^« s 4N VAI iV " ^ V S* ^X ^ s
                     44.0       4.16     0.945       45.33      2.48       2.54
                     At t\       f\ KQ     A 1 1 O       Af\ CH      f\ OH       f\ nrt
      ;!>«•••>:
   t^>- ^-^
41.6       39.0
35.0       38.0
  **t.VJ       •*. JLO     U.»«tU
  41.0       0.58     0.118       *v».oi       u.o
  36.0       0.58     0.118       36.67      -0.5!
t^l^Wf^^^r;r^vV^-'Xvt"-;^;^^^^^^^v  ;/';
?c«%f-^-4^", x H-vv^- v, -»*rky-/ ^-^*%V?^Ar> l!:¥f •"*
  410       1.15     0.236       4033       O7!
                                  2.48
                                  0.87
                                   ,52
            41.0
            37.0
                              _.1.53_w_ J>-354

                                         0.118
                      40.33
                      36.67
                      '-\v ?-'w\5' ••"
                      • •&o 4^"%f,^ x*\
                      36.67
                      40.67
 0.75
-0.52
   2.54
   0.92
  -0.46
- -*~,  v >*- -.^^.^LW-^XS X
«', - \v  >>S>A->••*•« ,v
•_•»- -..^- »;-;x—-X  ,• ~?J
   0.81
^-0.46^__


 V -6.46
   0.92
38.0
                      35.
            37*0       0.58     0.118       36.67      -o"52    "-6.46
           ^ 42.0 __, JJSl_w,JD^7JL^, t J*i§7       9-87,      °-9?
        Il^sl^^                                                         IM^
        'I^S'?  .^Lj^^llj^^iLrZZlJH^

            36.6       1.53     6.354       36.33'""   -0.64      -0.58
 Average
      Tag
           Data sorted by Laboratory Average
        Lab \ Average	Tag	Lab  \ Average
                                                                       Tag
                                                               Lab
    20.33
    28.33
    29.33
    33.33
    33.67
    33.67
    34.33
    34.33
    34.33
    35.00
    35.00
       x
       x
         CX
         RZ
         TB
         QW
         AY
         AH
         QU
         QP
         AZ
         SN
         QT
                          35.00
                          35.33
                          35.67
                          35.67
                          35.67
                          35.67
                          36.00
                          36.00
                          36.00
                          36.00
                          36.33
                               BC
                               SR
                               I
                               EX
                               C
                               BA
                               TQ
                               PW
                               NP
                               NH
                               Y
                            36.33
                            36.67
                            36.67
                            36.67
                            36.67
                            36.67
                            36.67
                            36.67
                            36.67
                            36.67
                            36.67
                  RO
                  XI
                  XF
                  XB
                  W
                  uv
                  s
                  PX
                  LR
                  DE
                  DD
  • = No data submitted
  0 s Insufficient data
                              TAG SYMBOLS
                       x = Determined to be an outlier
                                                       It s Above control limit
                                                       & = Below control limit

-------
8/37
Cobalt-60
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998



Data sorted by Laboratory Average
Average
36.67
37.00
37.00
37.00
37.00
37.00
37.00
37.00
37.00
37.33
37.33
37.33
37.33
37.33
37.33
37.33
37.33
37.33
37.33
37.33
37.33
37.67
37.67
37.67
37.67
37.67
37.67
37.67
37.67
37.67
37.67
37.67
37.67
37.67

Tag Lab
AU
XT
VE
SF
SD
EL
DT
DH
AW
WR
TJX
TC
T
NJ
MX
JM
ffl
HE
FL
D
CS
WD
vs
vo
OT
M
KX
KL
K
GL
CE
BO
BM
BH

Average Tag
38.00
38.00
38.00
38.00
38.00
38.00
38.00
38.00
38.00
38.00
38.33
38.33
38.33
38.33
38.33
38.33
38.33
38.33
38.67
38.67
38.67
38.67
38.67
38.67
38.67
38.67
39.00
39.00
39.00
39.00
39.00
39.33
39.33
39.33
39.33
• s No data submitted TAG SYMBOLS
0 = Insufficient data x = Determined to be an
Lab
WW
OB
MT
LF
L
JS
HK
GQ
FJ
FE
UP
sx
RK
R
PM
IU
DO
CA
VH
sv
QM
JE
E
CP
BB
AK
P
N
DR
BN
AE
U
SS
QZ
PD
Average Tag
39.33
39.67
39.67
39.67
39.67
39.67
39.67
40.00
40.00
40.00
40.00
40.00
40.33
40.33
40.33
40.67
40.67
40.67
40.67
40.67
41.00
41.00
41.67
41.67
42.67
43.33
43.33
43.33
44.33
45.33
45.33
45.33
51.33 x
74.33 x
831.67 x
ft & Above control
outlier 11 & Below control
Lab
A
O
MV
KH
JY
CJ
AF
VI
SM
RX
MP
HL
XD
QX
BK
XK
XA
VC
SI
Q
LE
BL
CO
AL
TD
JG
EB
AJ
TO
X
TW
OM
NO
OA
XU
limit
limit

-------
            ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998        9/37

Cobalt-60

 % responding labs	Frequency distribution	
 20


 10H
                                              •••I.-.
     -6            -4            -2           0            +2            +4           +6
                    Normalized deviation of the mean from the known value


 % responding labs   	Frequency distribution
 20-
 10
                                     ulillIJi
     -6            -4            -2           0            +2            +4            +6
                    Normalized deviation of the mean from the grand average

-------
             ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-l998
                                  10/37
Zinc-65                             Statistical Summary                      166 Participants
The known value of this nuclide is 131.0 pCiA with an expected precision of 13.0; the control limits
are 108.4 to 153.6; the warning regions are 108.4 to 116.0 and 146.0 to 153.6
3O(18.1 %) Failed to respond ^
7(4.2 %) Outliers •
2(1.2 %) Out of control •"
     but not an outlier


         Statistic
               , 112(67.5 %) Within all limits
Respondents
"• 15(9.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
    163.02        Grand Avg 137.21
    303.49                      7.65
 92103.49                     58.45
    186.16                      5.57
     24.44                      4.74
      0.11                      0.81
    137.33                    137.33
      4.83                      4.83
      0.02                      0.83
9(6.6 %) More than 3 norm. S.D. ..^
15(11.O %) Between 2 and 3 norm. S.D.
            • 7O(51.5 %) Within 1 norm. S.D.
                           of known value
     42(30.9 %) Between 1 and 2 norm. S.D.

-------
11/37 ESD-LV Performance Evaluation: Gamma in Water,
6-Nov-1998

Zinc-65

Lab
A
AE
AF
AH
™ V"j;«5^
&A*! V^t^y'^
153.0
133.0
129.0
^SC^fi*!^
122X)
135.0
135.0
132.0
120.0
145.0
139.0
"rr;%*t*7*^;;
154.0
152.0
130.0
135.0
136.0
136.0
130.0
116.0
« .. nw vJJ. %A^,-»1S-.%
,>.. , ""' ^ 0 A. ^A ' ,. V
138.0
153.0
145.0
143.0
140.0
'.yWV^T&O'?.'
140.0
137.0
134.0
127.0
146.0
138.0
144.0
140.0
• , :r
Y^-dWolv
133.0
' /3 ;r vrv*
130.0

Res. 2
143.0
130.0
143.0
139.0
tS "S* '<§w^sK^C~s
'i^'-^Cf^
135.0
136.0
127.0
"^^I^
mo
132.0
134.0
139.0
128.0
143.0
138.0
>p^7*^"
151.0
152.0
130.0
134.0
150.0
136.0
139.0
117.0
< S s , *•*. f «, 'jff
',:;<•&$
134.0
132.0
162.0
154.0
141.0
!t^yj$&
138.0
140.0
135.0
128.0
141.0
144.0
136.0
143.0
"• .~,-^ < -
r 170.0
128.0
'•/Vv?:-
118.0

Res. 3
140.0
140.0
140.0
121.0
~.y, , . «,,,* **""£.>' ^
^ixfo-- J$^*ft^ *- '
135.0
137.0
^ 131.0
S;r^4^vCi^"-!
131.0
130.0
127.0
134.0
130.0
143.0
138.0
^,,v^"£v,™.'
155.0
152.0
137.0
140.0
132.0
130.0
133.0
130.0
"" "" \ •? "* *•#*"** V%^*'
>:-!;^ ,'/^/. >?lJ
140.0
137.0
150.0
142.0
U2.0
;:'*T/;fi;<£7,
137.0
135.0
135.0
125.0
122.0
130.0
141.0
142.0
':) ' ,',O"' '"'i
^ »:, -:-<>-/ ' >*
,: 170.0;
132.0
Vv^C'^;^
136.0
• = No data submitted
0 =
Insufficient
data
X 3
Exper.
Sigma
1.53
5.03
2.08
11.36
' ' /' jf^jK* **•'• V-
f - 1*1*^,: ' '^
10.39
2.08
2.00
^W^l^-'^t
5.86
2.52
4.36
3.61
5.29
1.15
0.58
•^Tllv* \''-
2.08
0.00
4.04
3.21
9.45
3.46
4.58
7.81
•• s s<% •.' ' fff f"."- ^ '/
.-- ;>*;' -,• \~i^
3M
10.97
8.74
6.66
1.00
x-.-;:'"iv6o /-
1.53
2.52
0.58
1.53
12.66
7.02
4.04
1.53
Rnganal
(R + SR)
0.136
0.454
0.182
0.954
4^- 'C /••"-' .~v"
;s '"s>^^-4*-f* ,** '5
0.818
0.182
0.182
Q^y ^~ ,, -"'"
0.500
0.227
0.363
0.318
0.454
0.091
0.045
-'£'>*: :~^ » £
0.182
0.000
0.318
0.273
0.818
0.273
0.409
0.636
'•- ""' * 'r J •-•.
" ' '- -•'•f, 'l-*
0.273
0.954
0.772
0.545
0.091
0.091 ,;
0.136
0.227
0.045
0.136
1.172
0.636
0.363
0.136
Normalized deviation
Average
141.33
134.67
140.67
126.00
V^' \\*"t«^fl*-'V w
^'»^; *j^^
141.00
135.33
129.00
-%,-,>_, ^-f;
128.67
132.33
132.00
135.00
126.00
143.67
138.33
X'&4'T!T
153.33
152.00
132.33
136.33
139.33
134.00
134.00
121.00
, S% ^ , S V
-..,._< i1 ; ;
137.33
140.67
152.33
146.33
141.00
^-1v7i.66
138.33
137.33
134.67
126.67
136.33
137.33
140.33
141.67
(grand-avg) (known) Tag
0.55
-0.34
0.46
-1.49
9_
''-X ,,';^'^x- .-\
-1.14
-0.65
-0.69
-0.29
-1.49
0.86
0.15
i' cr'T^''-'^' '-
2.15
1.97
-0.65
-0.12
0.28
-0.43
-0.43
-2.16
, ,./•., >vf , }f%yf g , A __ • -.j,^
*,'i ^^/^rt''^'-, " ',-j
0.02
0.46
2.02
1.22
0.51
v;/«-v'r^82'"- 'v,
0.15
0.02
-0.34
-1.40
-0.12
0.02
0.42
0.59
1.38
0.49
1.29
-0.67
m-y^,^ 	 -y^^.,,,-.^, ,
'V'XlA'1' ' ,'r'sf •'*'?i'"
1.33
0.58
-0.27
:.4>^'^ ,- »x '-*
-0.31
0.18
0.13
0.53
-0.67
1.69
0.98
>~ j:x'-' ^-,;,/
2.98
2.80
0.18
0.71
1.11
0.40
0.40
-1.33
<,V.W f > f, f- ,_f •• ' .•_.«. ^
• *% .,'' >»>. :'
0.84
1.29
2.84
2.04
1.33
>^fi99^"'>^r
0.98
0.84
0.49
-0.58
0.71
0.84
1.24
1.42
\ ." H?'.* -f^fl^^f^ - -x^v : ''Vr'-, ;; ,"j''~K"?& '', '/;" •^-;;>v'"^ ^"' '_ B' ,-
^-vioSlO"1
2.65
- rpl/:\ \ ',"' ,
9.17
:^KOOO ~
0.227
;r"^?y>""
0.818
/ 170,00
131.00
' i'"-' '/
128.00
TAG SYMBOLS
Determined
to be an outlier
*• >* ' * ' "'
' :V?^87'/-/
-0.83
--^=rSi-^' -r
-1.23
IT = Above
$ = Below
6.26 X
0.00
-"^; .' •' %
-0.40
control limit
control limit

-------
ESD-LV Performance
Zinc-65
Lab Res. 1
FE
FJ
FL^
GL
GQ
HE
m
HK
HL
US
JL,.,
JE
JG
JM
JS
JY
K
KH
KL
KX
L
LE
LF
LR
M
MP
MT
MV
MX
N
NH
NO
NP
^0 ^
'SQB3
OM
OT
P
• =
0 e
120.0
143.0
_ 137.0 ^
-^"Y4i.oT~
139.0
134.0
130.0
141.0
131.0

"JljiMLl
._„.„ _^
160.0
132.0
137.0
146.0
138.0
127.0
138.0
140.0
141.0
180.0
150.0
134.0
144.0
134.0
142.0
140.0
120.0
134.0
145.0
137.0
*t^P^^
150.0
131.0
^_J140.0_
^1: v ~;i|\^'^
141.6
129.0
__ 131.0 _
Res. 2
130.0
140.0
139.0
" 135.6 "
139.0
134.0
126.0
139.0
135.0
ms?z
~~43.Q~"~
162.0
135.0
141.0
150.0
136.0
130.0
139.0
137.0
128.0
135.0
140.0
138.0
146.0
130.0
144.0
133.0
126.0
136.0
146.0
135.0
~"l55.0
141.0
142.0^
4^|fex^A\f-
145.0
119.0
127.0
Res. 3
140.0
136.0
^J45JO_
* "l36.0
139.0
136.0
125.0
144.0
134.0
iii
" 143.0
159.0
135.0
139.0
151.0
138.0
130.0
137.0
126.0
136.0
145.0
150.0
135.0
152.0
137.0
138.0
141.0
124.0
142.0
148.0
136.0^
160.0
133.0
142.0^
if ;|^;2^]biOp
fe4\^%§;
~ 148.6
142.0
125.0
No data submitted
Insufficient
data
x s
Evaluation: Gamma in Water, 6-Nov-1998
Exper.
Sigma
10.00
3.51
_4-16_^
3.21
0.00
1.15
2.65
2.52
_J2.08

£ijp"
1.53
1.73
2.00
2.65
1.15
1.73
1.00
7.37
6.56
23.63
5.77
2.08
4.16
3.51
3.06
4.36
3.06
4.16
1.53
1.00
sioo
5.29
^_Hl-~,
J?^^-^^i~4
"""sir"
11.53
3.06
12/37 1
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.909
0.318
_OJt63
0.273
0.000
0.091
0.227
0.227
^p-isji
6.136
r^.«ar
4i^^!A>v
"*O091
0.136
0.136
0.182
0.227
0.091
0.136
0.091
0.636
0.591
2.990
0.454
0.182
0.363
0.318
0.273
0.363
0.273
0.363
0.136
0.091
0.454
0.454
0.091
^?227
i;4|,*|ivr
0.318
1.086
0.273
130.00
139.67
^_Jt4O33iiw
137.33 T
139.00
134.67
127.00
141.33
133.33
•wy^wyr-^ " st*v%s^;*yMs^ss^<^f^<
^"J_132.67/^
iSie'T ,
160.33
134.00
139.00
149.00
137.33
129.00
138.00
134.33
135.00
153.33
146.67
135.67
147.33
133.67
141.33
138.00
123.33
137.33
146.33
w»._i2§-°?^.
155.00
135.00
141.33
sw^'^A-y^'-^^'*"'*?'.^'** • •. v. ^"^.*O
?15;63-'<-,X'.S-.
^ ^ % t - ^^ v *^ '"'"'
Teg"™
3.91 ft
0.40
1.07
2.40
0.84
-0.27
0.93
0.44
0.53
2.98
2.09
0.62
2.18
0.36
1.38
0.93
-1.02
0.84
2.04
3.20 ft
0.53
^ 1.38 	 _
v-'.xV-: -' '"•'^
1.82
-0.13
-0.44
control limit
control limit

-------
13/37 ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Zinc-65
Lab
.^L
PM
PW
PX
Q
QM
QP
QT
QU
QW
QX
QZ
R
RK
RO
:M^w"*y <**
vHR'1
''•TOTT^-
',JvU>'<
RX
RZ
S
SD
SF
SI
SM
SN
SR
ss
sv
sx
T
TC
TO.
TO
TQ
TR
^•.^—-•s
??t'JLW^
U
;UM"
UP
*;ttw
UV
ux
'"Vtv'"'
/&*,* ^
• =
0 s
Res. 1
_ J14OO_
*"— £j7j0j""
133.0
127.0
129.0
138.0
130.0
134.0
116.0
116.0
142.0
143.0
141.0
150.0
153.0
v^T^T*-??^^ ~ ~^-
"'i.'*^^^^'?^
J?"r'%/':.-'^<;-'^-,""
'-/ , ^"f/"-"
124.0
126.0
134.0
141.0
135.0
146.0
144.0
137.0
134.0
137.0
143.0
150.0
120.0
130.0
_128.0_
~i3ao
134.0
123.0
",;; ~*'^ Ko'*v~ '
* ' ' - " ^ylO,O»v C,r~
134.0
T"; i-^'^""
137.0
,v* , - "•strr- rr
?„ sk ^<*,x.«™Ai
"ST- ' ^ *isi '-"? JLtU ;r^ 'stff^tt
' -,s \> s > ! '"•><
139.0
••ss^ r,n~-»7j ^
115.0
145.0
" " "^ J\ * ^\'"" - ? * '
*V is ^S '**'"' > * ^
Res. 3
125.0_v
144.0
131.0
132.0
125.0
143.0
127.0
134.0
119.0
116.0
136.0
144.0
142.0
140.0
15J7.0_
?' *W^\ ^^''^s ^

l^-'^'f *-^i%^
,*s,\','X.% /-""^^J'*' ,
125.0
148.0
133.0
142.0
133.0
141.0
143.0
116.0
132.0
148.0
137.0
135.0
139.0
130.0
^J43X)_
" 155.0
143.0
134.0
-•'xiy^art V\\
^^•^ijjJosUj '^.7v>.^Tr
''•Y - ''Ivs^W" • •*'
''•V^-'^K'l '
i"1^/'..' ^"x *,"'
1.00
11.06
1.00
2.65
4.73
5.51
6.08
11.36
3.61
7.37
6.51
7.64
11.27
1.15
,.^.64^
*" 18.45
4.73
6.35
^''r^ij/QR''-"
*f?i?'"i''*&tvO *V,V-
q.58_ __
, '"Tf^fjT;;^;^
1.53
? ' !fj s <>w v **Jjk*<,<£
A>iX S"s^ ""-^ s-^. s ''A^' *^/
9.02
4.51
+,?<*.'$ "%**"' "f'x'^
^''X''V ' "" V« *'•'''•'
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
J).682
0.863
0.136
0.227
0.182
0.363
0.318
0.045
0.136
0.182
0.273
0.045
0.136
0.909
1.086
t3S*&-fff^?f'&i'yf
*A^ *%^'^h
% ^"w""^% s
' J^' ^ ** ' >f ,;
0.091
1.000
0.091
0.227
0.409
0.500
0.500
0.954
0.318
0.636
0.591
0.682
0.909
0.091
-^IJr
2.211
0.409
0.500
' i'f&vi
•* »'*4-«vUO
0.045
's^-?'^^-*™
0.136

0.818
0.409
, \*rf^|^;
" - v ' .^
134.67 _^
139!67
131.33
129.00
127.67
142.33
130.33
134.33
117.67
117.33
138.67
143.67
142.33
140.00
148.00
^'?!V^";" " "Jv/^?"-^^ '
*''•<;' ^vO-r.-' • '• '"V,'
* 'v^> ^ j S-.V $*
-•""I""",1, '.^
"',-": « ,-^-;'frS1''''', '"**
124.00
137.67
134.00
140.00
131.33
146.33
140.00
129.00
135.00
145.33
136.67
143.33
133.00
129.33
139.00
150.33
137.67
126.67
'' I '?• '-' -i m; qo". ; '
*/'?'",>'./ J-Ov»«>«J' ' ' ',
134.33
v:~™7>^^-5
138.67
A-V -—•--- -,'5'- ^»- "T;* ,"••*
123.67
140.33
-\Ai-" >x"it%^\-- ^~ ' '»
" '' * x . ".
TAG SYMBOLS
Determined
to be an
outlier
^_-0.34_ 	
0^33
-0.78
-1.09
-1.27
0.68
-0.92
-0.38
-2.60
-2.65
0.19
0.86
0.68
0.37
1.44
P«y^™™
'- '*<•" "'
• -?;, a;,-1'!^
><• ^j"'^*1' ' '"
-1.76
0.06
-0.43
0.37
-0.78
1.22
0.37
-1.09
-0.29
1.08
-0.07
0.82
-0.56
-1.05
..JtH* ....„,.
1.75
0.06
-1.40
"" "o'7|-" "* '
,"- ^ Ov'O ;", o1""-
_-0.38_^ 	
,v7A'- CT?; .'-'«.
0.19
mVr«' Vfrp'y.;?!' '
-1.80
0.42
A, ^ ' ' " y/^ ' ••' ' %
' ' .. 'f V -'
tt s Above
Ji s Below
AIL.
£15
0.04
-0.27
-0.44
1.51
-0.09
0.44
-1.78
-1.82
1.02
1.69
1.51
1.20
2.26
••^^^ww ; «A~~« .~w
'Vv™''^'"- x',^'*'l' ••'{'
^?\i*ri^&L' '•'
'% " ' v s •.''•"'
-0.93
0.89
0.40
1.20
0.04
2.04
1.20
-0.27
0.53
1.91
0.75
1.64
0.27
-0.22
\ff]
2.58
0.89
-0.58
V, " ' %* " <" *
^ jljO i ' X ;*
0.44
Cs™'.;.» '"
1.02
'-"'".;rv^v • ' »^---™~
-0.98
1.24
'' '• •
• . , ' ' «< '
control limit
control limit

-------
             ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
                                                                             14/37
Zinc-65

Lab     Res. 1
                              Exper.   Rng anal             Normalized deviation
          Res. 2     Res. 3     Sigma   (R + SR)   Average   (grand-avg)  (known) Tag
                                        3.51     0.318      147.33       1.35      2.18	
                                                 0.727      149.67       1.66      2.49
151.0
141.0
145.0
146.0
                                                            144.67
                                                            145.67
                   134.0      145.0      7.77     0.682      136.33     -0.12      0.71
               ^y«^^^^^X*<««^*^             < * "• w* "• "• x t«W^*^<™' ^wic-wif w^ SJJJyv ft "W*^ f {• V «•«* •"•*X£«\ •<••*< ^^!»wjM«1*V«rtvvw.«\sx^. ww^x-^t •«'••*•'«'••** AVW,,.™*!"^ W^-A v«.\ ^NW^W>V >>t*w^!p. ™*
               B^                                     "•: ,^JjW StS-^ Ss- A; ;?: Ir^^^^-^S^?^
                   115.6      147.6     16.17     1.865      132.33     -0.65      0~18
                   157.0      126.0     17.62     1.778      146.33      1.22      2.04
                                      _6-66,^    0.545 ....... IJf-OT... ..... ^0.99 ^^^

                                        4.04     0.363      142.33      0.68
                                                                          1.82
       8.02
                       0.727
                     '^"*^*/^-> ;£'" V-- •i-Xi'Ci ^ <• Vs1"1-' ""^ "^ "' «0">V*T)T/*.,''
                     140.0       6.66    "0.006
                     148.0       4.73     0.409
                            ^'^^^^p^^
                            ,,, ...j^,..„ _. ..
                                                    137.33
                                                                        0.02
                                                            uo.oo       .37
                                                            144.33      0.95
                                                                            "
                                                         1.51
                                                         0.84
                                4.16
                                                  .363
Average
      Tag
  Data sorted by Laboratory Average
Lab   Average	Tag	Lab | Average
                                                    Tag
                                                       Lab
   13.67
   71.00
  107.33
  117.33
  117.67
  121.00
  123.33
  123.67
  124.00
  126.00
  126.00
        x
        x
        X
IU
CX
WR
QW
QU
CA
MX
UV
RX
BA
AH
126.67
126.67
127.00
127.67
127.67
127.67
128.00
128.67
129.00
129.00
129.00
                                TR
                                DH
                                HI
                                W
                                Q
                                P
                                EX
                                AU
                                SN
                                PX
                                KH
129.00
129.33
129.33
130.00
130.00
130.33
131.00
131.00
131.00
131.33
131.33
AL
Y
TC
OT
FE
QP
WD
VO
EL
SF
PW
 • e No data submitted
0 s Insufficient data
                              TAG SYMBOLS
                       x s Determined to be an outlier
                                             ft = Above control limit
                                             $ = Below control limit

-------
15/37 ESD-LV Performance Evaluation: Gamma
Zinc-65

in Water, 6-Nov-1998

n

Data sorted by Laboratory Average
Average Tag
1 132.00
132.33
132.33
132.33
132.67
133.00
133.33
133.67
134.00
134.00
134.00
134.00
134.33
134.33
134.33
134.67
134.67
134.67
134.67
135.00
135.00
135.00
135.00
135.33
135.33
135.67
136.00
136.33
136.33
136.33
136.67
137.33
137.33
137.33

% responding labs

10- 	

° -6 ' -'4
Lab
AY
X
BL
AW
I
T
HL
MP
S
JM
C
BO
U
QT
KX
PD
HOE
DE
AE
SR
NP
L
AZ
VS
AK
LR
NJ
WW
DO
BM
sv
XF
N
K

Average Tag
137.33
137.33
137.33
137.33
137.67
137.67
138.00
138.00
138.33
138.33
138.67
138.67
138.67
139.00
139.00
139.00
139.33
139.67
139.67
140.00
140.00
140.00
140.00
140.33
140.33
140.33
140.67
140.67
141.00
141.00
141.33
141.33
141.33
141.33

Frequency distribution

	 . Mil
: ... iiliimll
-'2 T J T
Lab
GL
DR
DD
CE
TQ
RZ
MV
KL
D
BC
XT
UP
QX
TD
JS
GQ
BN
PM
FJ
XI
SM
SD
RK
UX
FL
DT
CJ
AF
CS
AJ
O
MT
HK
A

Average Tag
141.67
142.33
142.33
142.33
143.33
143.67
143.67
143.67
144.33
144.67
144.67
144.67
145.33
145.67
146.33
146.33
146.33
146.33
146.67
147.33
147.33
148.00
149.00
149.67
150.33
152.00
152.33
153.33
153.33
155.00 ft
160.33 ft
165.33 x
170.00 x
274.33 x
3669.33 x


"J

••_.._ _ _ _
J2 ' 4
Lab
E
XD
R
QM
SX
QZ
JE
BB
XK
XB
VH
OM
ss
VI
XA
SI
NH
CP
LF
VC
M
RO
JY
VE
TO
BK
CO
LE
BH
NO
JG
TW
EB
OA
XU



m
+6
Normalized deviation of the mean from the known value
• = No data submitted
0 s Insufficient data
TAG SYMBOLS ft = Above control
x = Determined to be an outlier U = Below control
limit
limit

-------
             ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998       16/37

Zinc-65

 % responding labs   	Frequency distribution	
 10
     -6            -4            -20           +2           +4           +6
                    Normalized deviation of the mean from the grand average

-------
             ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998
                                  17/37
Cesium-134                         Statistical Summary                      166 Participants
The known value of this nuclide is 105.0 pCi/1 with an expected precision of 5.0; the control limits
are 96.3 to 113.7; the warning regions are 96.3 to 99.2 and 110.8 to 113.7
3O(18.1 %) Failed to respond ^
5(3.O %) Outliers •'
6O(36.1 %) Out of control
       but not an outlier


         Statistic
               t. 43(25.9 %) Within all limits
Respondents
28(16.9 %) 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
    105.32
     98.90
   9781.94
     93.91
      0.30
      0.00
     96.67
     -7.94
     -0.08
  Grand Avg 97.11
                6.14
              37.67
                6.32
               -7.52
               -1.29
              96.67
               -7.94
               -1.36
69(50.7 %) More than 3 norm. S.D.;
24(17.6 %) Between 2 and 3 norm. S.D. -
           ,-17(12.5 %) Within 1 norm. S.D.
                           of known value
     26(19.1 %) Between 1 and 2 norm. S.D.

-------
18/37 ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998

Gesium-134

Lab
A
AE
AF
AH



AJ
AK
jSJL^
._.

AW
AY
AZ
BA
BB
BC
fiilf-p
»pbH#i|
BH
BK
BL
BM
BN
BO
C
CA
itppl
^HK-X'VV:':^
CE
CJ
CO
CP
cs
D
DD
DE
DH
DO
DR
DT
E
^SS-WW-i-WSS
ifEAlP

EB
EL
K^w.m^"-::y.y
flEWS
£•***;**«
EX

Res. 1
106.0
102.0
100.0
99.0
^^S;^^?^S^*S^?S^^


__j^J
94.0
112.0

95.0
94.0
91.0
101.0
98.0
102.0
96.0
fe?^^AWfi^':^S^Aiifiii:iii^:ii
104.0
105.0
94.0
101.0
95.0
111.0
98.0
85.0


"^Tostxf*"
103.0
93.0
101.0
95.0
*&V&-tt'<^:-ysf:&A-tt-toSZ-&.#<&v
103.0
105.0
99.0
102.0
96.0
91.0
88.0
98.0
"SliW^iiSS:^.^^.^^^::;:"


100.0
104.0



89.0

Res. 2
108.0
102.0
100.0
104.0
$$m$m88$m$m
t%^feSi?:^^lw^

95.0
94.0
124.0
5:ffi^HS&^::::-:^::;AW
97.0
94.0
94.0
108.0
97.0
102.0
96.0
&f»»JS:S:$$iJSi^fc&&:
97.0
106.0
94.0
103.0
100.0
109.0
105.0
91.0


104.0
101.0
96.0
100.0
97.0
99.0
107.0
100.0
103.0
98.0
92.0
94.0
101.0
^S^SSfitjKSSSS^S^iS:!
ii^^iSiHl

166.0
104.0



99.0

Res. 3
107.0
97.0
94.0
93.0
'^wmsss-s?^^^^^'
^S^^M^S^jiii!!^^^

95.0
94.0
110.0
-— __

94.0
93.0
103.0
96.0
103.0
96.0
93.0
104.0
94.0
101.0
91.0
103.0
98.0
97.0


'"""96.6"""
105.0
98.0
98.0
94.0
^^i'.SS^^iJ:^.?^'''^^:'^^^
102.0
104.0
100.0
101.0
100.0
97.0
93.0
98.0



166.6
101.0
'S8S?«!W^55i^KiS^SSV

|Si||gs^gS4«^**s||i
90.0
• s No data submitted
0 =
Insufficient
data
vy »—
Exper.
Sigma
1.00
2.89
3.46
5.51
3®$$8m3m?$®$$g
^&m$3$&m$#m£t?f

0.00
0.00
7.57

2.66
0.00
1.53
3.61
1.00
0.58
0.00
""""' "5.57"
1.00
0.00
1.15
4.51
4.16
4.04
6.00
rajS^^SiM^KST-Si'i?:?:
silmifeSlliPHh?
il^^^iii
4.36
2.00
2.52
1.53
1.53
2J08'
1.53
0.58
1.00
2.00
3.21
3.21
1.73
$&ffiy$£if&^f£ffiv$8$$
i^^Bin^^^

0.00
1.73


_,__

Rnganal
(R + SR)
0.236
0.591
0.709
1.570
^S^Wt^^tSSWSKl??

.___*,.

0.000
	 2.245 _v<
^S'i^iiiii^ft^^^
	 '^473"
0.000
0.354
0.827
0.236
0.118
0.000
^;|PII§^^p^^^||f^ixtli|
1.570
0.236
0.000
0.236
1.120
0.945
0.827
^JL.795^..


"6'.945
0.473
0.591
0.354
0.354
0.473
0.354
0.118
0.236
0.473
0.709
0.709
0.354



0.000
^jH5,!-,^

jii^^^ii^pS;^^:^^^^^^^^

L345
Normalized deviation
Average
107.00
100.33
98.00
98.67
^MiSS^IllSSf

„„,_,„„.„

94.00
115.33

97.66
94.00
92.67
104.00
97.00
102.33
__96.00v m
98.00
105.00
94.00
101.67
95.33
107.67
100.33
91.00


101.00
103.00
95.67
99.67
95.33
101.33
105.33
99.67
102.00
98.00
93.33
91.67
99.00

IlllHstfllliltll

100.00
103.00

Hli;H!ifB!S!til

	 "92.67 	
TAG SYMBOLS
Determined to be an outlier
(grand-avg) (known) Tag
3.43
1.12
0.31
0.54

^^^^^^^i^|;;^^||||

~a73
-1.08
6.31

'"""x"-6.64
-1.08
-1.54
2.39
-0.04
1.81
-0.38
i^Si^^^^^S
^^^iiS^^^S^S^^^M^
0.31
2.73
-1.08
1.58
-0.61
3.66
1.12
-2.12

.._.,,.._...,

2.04
-0.50
0.89
_-0-61,
'"""V""T46 	
2.85
0.89
1.70
0.31
-1.31
-1.88
_0&5__

^p-i^^^^i^^^i^-ili^il^:-

1.00
2.04
<&%$$&&¥:^ffi%&%$$3f$:$3'
t^^i^^^^^^£^^^^

	 -L54 	
ft s Above
U s Below
0.69
-1.62
-2.42
-2.19
^S^i^^j^SiJ^^^W^SMx;
•$$}^^&&s&rkw&^®$-&

-3.46 Jl
-3.81 11
3.58 ft

"-i??"
-3.81 II
-4.27 U
-0.35
-2.77
-0.92
JUL-.JL-
"-2A2
0.00
-3.81 U
-1.15
-3.35 U
0.92
-1.62
-4.85 U
i^^s^lli^^l^i
i^^ft^PIP:^i|!»pS!
-1.39
-0.69
-3.23 U
-1.85
JMto_J^^
"-L2T
0.12
-1.85
-1.04
-2.42
-4.04 li
-4.62 11
-2.08
^^^^vf^^'^'yfiM:'%'i^ff}i^
liillllffl llllll

""-i/i3 	
-0.69
•™^Kfff^^^ft^.^^f^^^ftf
''&$£&^$$w?$$s$ ^-f->^-9Jf^K^:

-4.27 Ji
control limit
control limit

-------
              ESD-LV Performance Evaluation:  Gamma in Water,  6-Nov-1998
                                                                                        19/37
 Cesium-134

 Lab    Res. 1
                                       Exper.   Rng anal             Normalized deviation
                  Res. 2     Res. 3     Sigma   (R +  SR)   Average   (grand-avg)  (known) Tag
 FE
 FJ
 FL
sss
Sf?fts
 GL
 GQ
 HE
 ffl
 HK
 HL
 JE
 JG
 JM
 JS
 JY
 K
 KH
 KL
 KX
 L
 LE
 LF
 LR
 M
 MP
 MT
 MV
M. * i-
PWP
 N
 NH
 NJ
Sp
 NO
 NP
 O
          97.0
          94.0
          98.0
          90.
         108
         108
          93
         100
         102
          110.0
           93.0
           96.0

          "89.0
          108.0
          107.0
           94.0
           98.0
           98.0
           94.0
           94.0
           96.0
           ^'/''Vlx
           ^v^l
           85.6
          108.0
          106.0
           96.0
          101.0
          101.0
8.50
0.58
1.15
2.695
0.118
0.236
                     100.33
                      93.67
                      96.67
                                       ^v;s^?^^SS:
                                            1.12
                                           -1.19
                                           -0.15
          -1.62
          -3.93
           2.89
           2.65
           0.00
           1.00
           1.53
           1.53
           2.08
          0.591
          0.000
          0.236
          0.354
          0.354
          0.473
            88.00
           108.00
           107.00
            94.33
            99.67
           100.33
                                -3.15
                                 3.77
                                 3.43
                                -0.96
                                 0.89
                                 1.12
          -5.89
           1.04
           0.69
          -3.70
          -1.85
          -1.62
101.
108.
 90.
 99.
 92.
101.
 84.
 98.
101
 97
106
100
 91
 97
 97
 91
ioa

 99
 90
 93.
'fr'&WSSJ*
rail
 99,
 90,
 99.
 97.0
113.0
 91.0
100.0
 92.0
103.0
 83.0
102.0
100.0
 97.0
104.0
110.0
 88.0
 96.0
 93.0
 93.0
10LO

101.0
 91.0
 92.0
                    105.0
                     88.0
                     99.0
100.0
111.0
 89.0
 98.0
 91.0
102.0
 84.0
 96.0
100.0
 99.0
116.0
 99.0
 96.0
 96.0
 96.0
 94.0
 97.0
   351
100.0
 89.0
 91.0
^.•rf\\ vtv"1 \ "*
If*- *\^
ilLO
100.0
100.0
2.08
2.52
1.00
1.00
0.58
1.00
0.58
3.06
0.58
1.15
6.43
6.08
4.04
0.58
2.08
1.53
2.08
»*3-Wa>,^-^ >iP^,-;
                    105.00
                     92.67
                     99.33
 0.77
 4.70
-2.46
 0.66
-1.88
 1.70
-4.66
 0.54
 1.12
 0.19
 4.00
 2.04
-1.88
-0.27
-0.61
-1.54
•HL
!^:fll
 1.00
-2.46
-1.77
KWMMVWMW?
!$iPV
 2.73
-1.54
 0.77
  -1.96
   1.96
  -5.20
  -2.08
  -4.62
  -1.04
  -7.39
  -2.19
  -1.62
  -2.54
   1.27
  -0.69
  -4.62
  -3.00
  -3.35
  -4.27
  -1.96
i2Ql4l
  -1.73
  -5.20
  -4.50
   rj^-T"
   ^;A>
   0.00
  -4.27
  -1.96
                                                                                            li
                                                                                          !::>^

                                                                                            li
                                                                                            II
                                                                         li
                                                                                           "'X  "
                                                                                            ',<•:
                                                                                            II
 • & No data submitted
 0 = Insufficient data
                                       TAG SYMBOLS
                                     Determined to be an outlier
                                                                ft s Above control limit
                                                                •H s Below control limit

-------
20/37
ESD-LV Performance Evaluation: Gamma in Water,
Cesium-134
Lab
PD
^JKEk
PM
PW
PX
JU
'|QM:
QP
QT
QU
QW
QX
QZ
R
RK
RO
?Wn'J
*"••**',
••^ V^V'T
!'. XV U
RX
RZ
s
SD
SF
SI
SM
SN
SR
ss
sv
sx
T
TC
TD
•y. p. -., A
TTfo
v. ^\ii
TO
TQ
TR
TW
U
:UM
UP
JUR
uv
ux
'W-
Res. 1
_ 96.0
i^v^CWI^!
90.0
93.0
106.0
_ ^87.0
^f^ff-Q
101.0
97.0
95.0
96.0
97.0
90.0
98.0
96.0
96.0
IfSSil

't ^ •• * t'.'f'^'-f jf ^
x/%^ - '*V"S'-"
102.0
111.0
96.0
91.0
82.0
104.0
90.0
98.0
97.0
105.0
83.0
100.0
99.0
78.0
88.0
rr*1^ *?y "^f

•f.fff. tXv&]§£i?.\
98.0
95.0
88.0
103.0
103.0
,;; r:^K
97.0
V?,;'?-^
85.0
	 98.0
^V-f.' "\-W' "• ^
Res. 2
98.0
^VfJV. ^ •kWM^«MM4M«¥"}»O y/.-fl.'A.'A^
y *V?' *•. A > W ^Tf^-sV'-* *
94.0
96.0
107.0
91.0
'| , 5? ^ ' * -^ ' '* , s V* \^s / "^0'^?
11 V •sV 's '' '.•' «oAixC^' >
^f** . ^xV^iT^
101.0
112.0
97.0
88.0
84.0
110.0
88.0
95.0
99.0
103.0
85.0
100.0
93.0
79.0
101.0
f**ttJffS s VA s "^t ^'vv* v^' ?*** v
*' ^ ^v\v'A?<*Cisl--^''w
S "•"'*£ jiv.ff <. N**-«?A*%S%W
123.0
93.0
89.0
94.0
102.0
;;' ;j^x^"\'^
^98.0
^ •; , -,&„{• >%-x'^
87.0
88.0
d-.,- ^'^.^^ftS
Res. 3
93.0
ri^^i^r
~91.0
93.0
110.0
93.0

109.0
96.0
99.0
98.0
95.0
91.0
98.0
91.0
93.0
Vjt^KKJ
1 ^V'" "•'*'«?•'' '/%"\
*i''>\'i>v ^' * •, j~-V'f 't*
/"jf ^l^t N*^%jr^,%
103.0 "
114.0
97.0
87.0
81.0
98.0
89.0
106.0
96.0
104.0
82.0
102.0
95.0
75.0
100.0
WAV^W^VAVM fffftf V^VA
OiM S''^ J1 * V'V '
V s''*' ^ SSVrt l^l'-' >
113.0
88.0
90.0
104.0
103.0
;^>7f§,«'^y
99.0
'""v^^g
93.0
90.0
Exper.
Rnganal
Sigma (R + SR) Average
,_JS 	
^v-fW^^;-;:V^
2.08
1.73
2.08
^^3.06^^
^P-3;b'S^ '
4.04
1.00
2.00
1.00
1.15
1.53
1.15
5.51
1.73
^&vs:.'>~-
'\^ s \V ' .. J "* *" * /^ <
, V f,* ^"^ <, ^ s /
" -' S'SVjV \ '
£00
1.53
0.58
2.08
1.53
6.00
1.00
5.69
1.53
1.00
1.53
1.15
3.06
2.08
__J.23 	


V.*1" /* '-.<-.•.' •.
12.58
3.61
1.00
5.51
0.58
•'T-r^vr^'^'
1.00
"v^^*'^
4.16
5.29
J0.691
s^^.'^r,*1
0.473
0.354
0.473
^0.709_
TToTOs"
0.945
0.236
0.473
0.236
0.236
0.354
0.236
1.570
0.354
'"'f^^'l
-. -f* ffjS" ^^
"~*f X"*^ ^'i^
.-^"-'''V^'X^"
0.236
0.354
0.118
0.473
0.354
1.795
0.236
1.570
0.354
0.236
0.354
0.236
0.709
0.473
2.020
"• ff ^"-ffffff.ff.
# yfy$yt*Z$ff
•. '"• -.-. '*-.
4.721
0.827
0.236
1.345
0.11£
•^^r
0.236
r^^i:;
0.945
1.345
C^x ,-L ' <• ;Vvv ,' -,^ 'St.« , - - ;: •$•:; -'^
• s No data submitted
0 s
Insufficient data
X S
	 _?5.67v
^7'i;"v«',l^Vr
91.67
94.00
107.67
90.33
^;V7"/,<7^|Q0*
104.67
96.00
97.00
97.00
96.33
91.33
98.67
90.67
94.00
^s!'^'
102.00
112.33
96.67
88.67
82.33
104.00
89.00
99.67
97.33
104.00
83.33
100.67
95.67
77.33
96.33
w. *,,*.„ ^ y.gfp.#&. ^w
'fy'^',,'. ^*\ ^1--!;,
x * •" f\ -. \ X ff. •.
111.33
92.00
89.00
100.33
JL02.67
-\"VXr"' •*•
98.00
;^V-vT ';^1\
88.33
92.00
/', j i/fy \-> •• ' v •.
TAG SYMBOLS
Determined
to be an
outlier
6-Nov-1998

]
Normalized deviation
(grand-avg) (known)
_ -0.50
'Sv^^S-,,"^- :
-1.88
-1.08
3.66
_ _-2.35
•3-^v<^gj§5^y "*?'». !
2.62
-0.38
-0.04
-0.04
-0.27
-2.00
0.54
-2.23
^08, __
;' " * ' *•.'' f* ;> $ ?•$< '' * ""' •.'
?• ^ t\ * "• *$• X^v"" %" * '^ %
f "' ^ ' * f "• \ x<«<^'' % sv f^
'"'V;Y ' "^'"' ' f ' "v" *
1.70
5.27
-0.15
-2.92
-5.12
2.39
-2.81
0.89
0.08
2.39
-4.77
1.23
-0.50
-6.85
-0.27
ffffl, yt^tT-rgfft.rtfttHprf.'Mpip. f ssv v
^.'VtA x y<^V-;"^ '^\^
•. *• \ •,•'•. J\*' w ^% %X % %
4.93
-1.77
-2.81
1.12
1.93
'3$'M^~;- "?^,
0.31
;„'"; ~'^ ".,? * v ^ ~-~^-\ ;-
'•'•""„ •" -'''y^iC'''^ •-' -\
-3^04
-1.77
':r:S->£^A-''-
ft H Above
Jl = Below
-3.23
^J'^y,:-";"1
-462
-3.81
0.92
/5-CMr
^lOifi™"
-612
-3.12
-2.77
-2.77
-3.00
-4.73
-2.19
-4.97
-3.81
vr^p^-j
^ ff f %£?&'
'•."• ' ' J *'Sv> ^C '^
^ 5^^x
-1.04
2.54
-2.89
-5.66
-7.85
-0.35
-5.54
-1.85
-2.66
-0.35
-7.51
-1.50
-3.23
-9.58
-3.00
VA f^vvffff, rrf.tr
\l "^' ^ ,
* ^
2.19
-4.50
-5.54
-1.62
-0.81
"-."^ T^
-2.42
' •. ** f^M "w '
-5.77
-4.50
"'-'/^*
control
control
Tag
Jl
"/TV*"?
'T
ji

...L.
SI x^>

Jl



Jl

Jl
H
V^'-^7

•T"1 4 "*'•, '' ^
,- , ,• - \ \



Jl
Jl

Jl



Jl

Jl
Jl

ff.rttt-.tf£tf
' 4 9 ',


Jl
Jl


• '"•'

' •
T
Jl
„, *„
limit
limit

-------
             ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998
                                                                                   21/37
Cesium-134

Lab    Res. 1
                                     Exper.   Rng anal            Normalized deviation
                 Res. 2     Res. 3     Sigma  (R +  SR)   Average  (grand-avg)  (known) Tag
   102.0
    93.0
   101.0
    91.0
     1030
      92.0
      97.0
103.0
 94.0
 99.0
 91.0
                                                          102.67
                                                           93.00
                                                           99.00
                                                           91.67
                                                                               -0.81
                                                                               -4.16
                                                                               -2.08
                                                                               -4.62
                                     s  x

                                         93.00
                                         93.00
                                         96.00
                                                      -

                                            -1.42      -4.16    if"
                                            -1.42      -4.16
                                            -0.38      -3.12
                          92.0
                          92.0
                          94.0
                                       1.00
                                       1.00
                                       2.00
                                       2.00
         93.0
         93.0
         96.0
         98.0
                             96.0
                                              .709
                                             0.354
                                             0.354
                                                           94.67
                                                           95.67
                                                          101.00
                                                                                3.58
                                                                                3.23
                                                                                1.39
                                                0.236
                                                0.000
                                                           99.00
                                                           94.00
                                                           91.00
                                                           96.67
                                                0.354
                                                           9400
                                                                   -1.31
                                                                    j^!i^Iy§9^8T?PS
                                                                    t    •. \Uvss vs i •. ^ ^  ,   •, 0 „ .•••»•. wsi
                                                                   -1.08     -3.81
Average
              Tag
          Data sorted by Laboratory Average
       Lab   Average	Tag	Lab | Average
                                                                         Tag
                                                             Lab
46.00
50.00
74.00
77.33
82.33
83.33
83.67
83.67
88.00
88.33
88.67
                x
                x
                X
                II

                li
                U
MX
CX
QM
TC
SF
sv
p
KH
GL
UV
SD
               89.00
               89.00
               90.00
               90.00
               90.00
               90.33
               90.67
               91.00
               91.00
               91.33
               91.67
                                              u
                                              u
TR
SM
OT
NH
JM
Q
RK
XI
CA
QZ
VI
91.67
91.67
91.67
91.67
92.00
92.00
92.00
92.67
92.67
92.67
92.67
                                                                             li
                                                                             II
PM
LR
JY
DT
UX
TQ
NJ
NP
MT
EX
AY
• e No data submitted
0 s Insufficient data
                                     TAG SYMBOLS
                                 s Determined to be an outlier
                                                                  tt s Above control limit
                                                                  II s Below control limit

-------
22/37
Cesium-134
ESD-LV Performance Evaluation: Gamma


in Water, 6-Nov-1998



Data sorted by Laboratory Average
Average
93.00
93.00
93.00
93.33
93.33
93.67
94.00
94.00
94.00
94.00
94.00
94.00
94.00
94.33
94.67
95.00
95.00
95.00
95.33
95.33
95.33
95.67
95.67
95.67
95.67
96.00
96.00
96.00
96.00
96.33
96.33
96.33
96.33
96.67

Tag
II
II
U
II
U
II
II
U
II
II
II
II
II
II
II
U
II
II
II
II
II
II
II
II
II
II
II
II
II






% responding labs

II -• •
° -'6

I_^__ 	
L1
Lab
VS
vo
VE
XT
DR
FJ
Y
XF
RO
PW
BL
AW
AK
m
X
ww
I
AJ
MP
CS
BN
XA
T
PD
CO
WD
W
QT
BC
WR
TD
QX
M
XK

Average Tag
96.67
96.67
97.00
97.00
97.00
97.00
97.33
97.67
98.00
98.00
98.00
98.00
98.33
98.67
98.67
98.67
99.00
99.00
99.00
99.00
99.00
99.33
99.33
99.33
99.67
99.67
99.67
99.67
100.00
100.00
100.33
100.33
100.33
100.33

Frequency distribution
l.llil.

i.TH-.i... 	 •_
"4 -'2 ' 6
Lab
S
FL
QW
QU
BA
AU
SR
L
UP
DO
BH
AF
IU
R
KL
AH
XD
VB
OM
JS
E
0
MV
JE
SN
HK
DE
CP
N
EB
TW
KX
HL
FE

Average Tag
100.33
100.33
100.67
101.00
101.00
101.33
101.67
102.00
102.00
102.00
102.33
102.67
102.67
103.00
103.00
103.00
104.00
104.00
104.00
104.67
105.00
105.00
105.33
107.00
107.00
107.67
107.67
108.00
108.67
110.67
111.33
112.33
115.33 ft
190.33 x
1242.00 x



V2 ' +4
Lab
C
AE
sx
XB
CE
D
BM
RX
K
DH
BB
VC
U
LF
EL
CJ
ss
SI
AZ
QP
NO
BK
DD
HE
A
PX
BO
GQ
LE
JG
TO
RZ
AL
OA
XU


m
+6
Normalized deviation of the mean from the known value
• = No data submitted
0 s Insufficient data
TAG SYMBOLS ft s Above control
x = Determined to be an outlier II = Below control
limit
limit

-------
             ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998       23/37

Cesium-134

 % responding labs	Frequency distribution	
  OJ»r
     -6      '      -4            -20           +2     "      +4     "      +6
                    Normalized deviation of the mean from the grand average

-------
             ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998
                                  24/37
Cesium-137                         Statistical Summary                     166 Participants
The known value of this nuclide is 111.0 pCi/1 with an expected precision of 6.0; the control limits
are 100.6 to 121.4; the warning regions are 100.6 to 104.1 and 117.9 to 121.4
29(17.5 %) Failed to respond .%
7(4.2 %) Outliers •
11 (6.6 %) Out of control'
      but not an outlier


        Statistic
                98(59.0 %) Within all limits
Respondents
• 21(12.7 %) 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
    129.91        Grand Avg  113.38
    190.93                      5.42
 36455.89                     29.43
    146.97                      4.78
     17.04                      2.15
      0.10                      0.44
    113.33                    113.33
      2.10                      2.10
      0.01                      0.43
18(13.1 %) More than 3 norm. S.D.
21 (15.3 %) Between 2 and 3 norm. S.D. •
            ,65(47.4 %) Within 1 norm. S.D.
                           of known value
    •33(24.1 %) Between 1 and 2 norm. S.D.

-------
25 / 37 ESD-LV Performance
Evaluation: Gamma in Water, 6-Nov-1998
	 ;N
Cesium-137
Exper. Rng anal
Lab
A
AE
AF
AH
ll|i|pil
::*.^s£.&j$&
,,_.

AK
i^tfS'WSfiwsftjsj'
•i&B^iiSi
$$&§ir&§$
:;|8fluEf;||
,„_

AW
AY
AZ
BA
BB
BC
wgstfftS&yf'S®'

BH
BK
BL
BM
BN
BO
C
CA
mzrm®

CE
CJ
CO
CP
CS

D
DD
DE
DH
DO
DR
DT
E



'"TEL"'
«:•:•:::»:*•-••:•:*••:•,
llf§tji^l
„,.

• =
0 B
Res. 1
115.0
114.0
122.0
107.0


120.0* 	
110.0
^$ffit$ft$®SS$$ffff&fi%&p§!3f$f'fffi'.



___

112.0
96.0
111.0
110.0
114.0
112.0
^f^f^S^S^^^f^&^f^

119.6
123.0
109.0
112.0
122.0
113.0
100.0
103.0


123.0
114.0
117.0
111.0
112.0

112.0
123.0
113.0
113.0
118.0
112.0
116.0
	 ^JLU-O^,



113.0
&#$&$&^<&$®&$t%&&3$.

mo" 	
Res. 2
116.0
115.0
114.0
120.0


	 ""i25!b
^ J1LO_


i^i^ii^^g^i^S^:^^^^:
:;$£|Pp$i;g«p»
SK^^^ii^^^^P^
._„_

112.0
96.0
108.0
103.0
114.0
113.0
^i^^p^JSg^^^SS^S'!!

""•""•120.0
125.0
104.0
111.0
116.0
112.0
110.0
113.0
SSPisSiiMiS**

	 *i2o;or~"
115.0
113.0
116.0
^M&O^

nib
119.0
114.0
111.0
117.0
114.0
114.0
117.0

iitililililiiil|ipli

111.0
yv.^.^:fltyft^^^^::wMW5W'KJ'(£


^MMtaiw
^feSSiiiiStigl®
111.0
106.0
103.0
106.0
110.0
107.0
113.0
t^SSl-^SJ'iJSSSSJ^SSS!^

120.0
125.0
110.0
113.0
121.0
112.0
100.0
113.0


118.0
117.0
118.0
114.0
114.0

106.0
121.0
114.0
112.0
113.0
113.0
119.0
119.0



[ 	 'ifMuT


ibib
No data submitted
Insufficient
data
X =
Sigma (R
1.00
0.58
4.00
6.81


	 ^Zfig'"""*""""
0.58
$¥ffi^#«ffiWK8S^*A^^


«tW»Wi«»Piifci'

1.00
3.46
4.04
2.52
4.04
4.04
0.58
<$^$3^^$^$$^$$$$'$&$if

.,,,,.,,,^._
1.15
3.21
1.00
3.21
0.58
5.77
.,.^~.$J!L~~W..


*"'"""2sz"* ~
1.53
2.65
2.52
^m^1.15^_

^,..,,,,,^,^.,...,,,,.,,
2.00
0.58
1.00
2.65
1.00
2.52
,,,.,^.|.2..,,r,^

^^^iisi^^^^^i^i^^:^pi^
^^ii^^M^S^ifeww^^Jl^Siiiii
	 """sLob"


2.65
+ SR)
0.197
0.098
0.788
1.533 _ _
Ki^^^iillli

0.492
0..098



«slSsllil*H
•SKiSSwKWwxfei^wisJi'iW
0.197
0.591
0.689
0.492
0.689
0.689
0.098

Sw^':¥:$SS:$feS:$S-:^:;Sx$:
0.098
0.197
0.591
0.197
0.591
0.098
0.984
0.984


0.492
0.295
0.492
0.492
p.l97__

b".691
0.394
0.098
0.197
0.492
0.197
0.492
0.492



0.394
•$$&$li$$8$$ffi$$&$&

a492
Average
116.00
114.67
118.00
114.67


122.00
JL10.67



sssl^i^sftiSpisI
S^Ss*®S5!S5igKS
112.00
110.00
98.33
108.33
107.67
111.67
112.67
^^SWft^r-S^iWWSSft*:?

119.67
124.33
107.67
112.00
119.67
112.33
103.33
109.67

__™«

115.33
116.00
113.67
,,J12.6.L,.

109.67
121.00
113.67
112.00
116.00
113.00
116.33
116.67



111.00
4^«^^^«Sft^wsffiSS¥j:rv

101.00
TAG SYMBOLS
Determined to
be an outlier
Normalized deviation
(grand-avg) (known) Tag
0.76
0.37
1.33
0.37 '
R^^^PI^pl^^^ffil
liii^lS^^S;!
2.49
-0.78
SJWJWffflSSS^ft^W^yfti^Jt-S^j^Wft

^^;^^ii^^pi^^^il|l;iili
M^i^^i^liil^

-bib* 	 '
-0.98
-4.34
-1.46
-1.65
-0.50
-0.21


1.81
3.16
-1.65
-0.40
1.81
-0.30
-2.90
-1.07
^i:^:;^g^^^^^^A;;:.:.:.^

2.01
0.56
0.76
0.08
_^-0.21^^^

-1.0?
2.20
0.08
-0.40
0.76
-0.11
0.85
0.95


ISS^^iiS^i^SKH'ii^^SiiiiSiiiiij
^S&S:&:W:$f:&"
-0^69
^&$^#i&%!&sffffffffff!tjiptaxttffi$

-3.57
ft s Above
U s Below
1.44
1.06
2.02
_J.06_^_

^^iii^^^:|^^::li^i^*^?i^-i^
"'"3.18 	 ft""""
j:°^>xt$*;£: *««.:«*x- *:•;«•:•:•: :•:•:•:•;•:•:•:•:•:-: :•:

-2.89
control limit
control limit

-------
              ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
                                                                                       26/37
Cesium-137
Lab
        Res. 1     Res. 2
                              Exper.    Rng anal             Normalized deviation
                    Res. 3     Sigma   (R +  SR)   Average   (grand-avg)  (known) Tag
GL
GQ
HE
m
HK
HL
JE
JG
JM
JS
JY
K
KH
KL
KX
L
 LF
 LR
 M
 MP
 MT
 MV
        108.0
        111.0
        109.0
        121.0
        119.0
117.0
117.0
107.0
116.0
114.0
116.0
114.0
115.0
115.0
112.0
         120.0
         109.0
         119.0
         117.0
         110.0
         126.0
          109.0
          108.0
          111.0
          109.0
          115.0
          109.0
          108.0
          113.0
          110.0
          118.0
          112.0
           0.58
           0.00
           1.15
           0.58
           3.00
           4.04
          0.000
          0.197
          0.098
          0.591
          0.689
           109.33
           108.00
           111.67
           109.33
           118.00
           116.67
            -1.17
            -1.55
            -0.50
            -1.17
             1.33
             0.95
114.0
136.0
108.0
115.0
117.0
120.0
111.0
116.0
117.0
111.0
115.0
119.0
111.0
112.0
116.0
121.0
114.0
118.0
115.0
111.0
           110.0
           108.0
           118.0
           106.0
           111.0
           122.0
          119.0
          119.0
          118.0
          111.0
          116.0
 1.53
10.44
 2.08
 2.08
 1.53
 2.65
 1.73
 1.53
 1.15
 0.58
            5.77
            6.08
            0.58
            6.66
            0.58
            5.03
0.295
2.658
0.394
0.394
0.295
0.492
0.295
0.295
0.197
0.098
          0.984
          1.158
          0.098
          1.345
          0.098
          0.984
115.33
124.00
108.67
114.33
115.67
119.00
113.00
116.33
115.67
111.33_

116.67
112.00
118.67
113.67
110.67
121.33
 0.56
 3.07
-1.36
 0.27
 0.66
 1.62
-0.11
 0.85
 0.66
-0.59
iPff;
 6.95
-0.40
 1.53
 0.08
-0.78
 2.30
          -0.48
          -0.87
           0.19
          -0.48
           2.02
           1.64
 1.25
 3.75
-0.67
 0.96
 1.35
 2.31
 0.58
 1.54
 1.35
 0.10

 1.64
 0.29
 2.21
 0.77
-0.10
 2.98
                                                                                           IT
 N
 NH
 NJ
 NO
 NP
JO

 OB
 OM
 OT
 P
         110.0
         110.0
         114.0
         119.0
         108.0
        41L9.0
        12^1.6
         116.0
         120.0
         117.0
           114.0
           109.0
           111.0
           115.0
           110.0
           117.0
            2.65
            0.58
            3.00
           0.492
           0.098
           113.00
           109.67
           114.00
            -0.11
            -1.07
             0.18
           123.0
           108.0
          J19.0

          "ll4.0
           120.0
            99.0
            93.0
           127.0
           117.0
           118.0
      Pg289l«
           113.0
           122.0
           114.0
            95.0
            4.00
            6.20
            0.58

            1.53
            1.15
            9.64
            3.06
           0.788
           0.886
           0.098^

           6.295
           0.197
           2.470
           0.591
           123.00
           111.00
           118.67
          ^Spl
           114.33
           120.67
           110.00
            95.67
             2.78
            -0.69
            ,M5L

             0.27
             2.10
            -0.98
            -5.11
           0.58
           -0.38
           0.87
           3.46
           0.00
           2.21
           J4;83"
           0.96
           2.79
           -0.29
           -4.43
 • s No data submitted
 0 = Insufficient data
                                       TAG SYMBOLS
                                x e Determined to be an outlier
                                                                ft s Above control limit
                                                                JJ s Below control limit

-------
27 /
37 ESD-LV Performance
Evaluation: Gamma
in Water,
6-Nov-1998

Cesium-137

Lab
PD
%#X&fW!yM£
,.„..

PW
PX
Q
QM
QP
QT
QU
QW
QX
QZ
R
RK
RO


SiSpsw^t
am
RX
RZ
S
SD
SF
SI
SM
SN
SR
ss
sv
sx
T
TC
TD

Res. 1
_^ JL18.0 _
i^^^M^^^ptfli
__„.

111.0
106.0
106.0
97.0
113.0
107.0
110.0
113.0
115.0
111.0
120.0
116.0
119.0


iliBltiillliPlllpl

"imP
127.0
111.0
106.0
101.0
122.0
112.0
113.0
106.0
118.0
108.0
119.0
106.0
109.0
110.0
^^W^^^W^^^^^^^^1
iwi^lxK^S!

TO
TQ
TR
TW
U
in
UP
waul
uv
ux
<3iT:Ti&<
Sj»Ms*iB;
• =
0 B
ipHlipiiliiiiS

™ 	 ^^f*™
115.0
111.0
114.0
115.0

112.0
UllllPlllSipiiiS
105.0
112.0



Res. 2
J20.0
,,,,,,_..

110.0
108.0
105.0
105.0
112.0
109.0
110.0
108.0
116.0
114.0
119.0
102.0
119.0




~^113.6~
121.0
110.0
109.0
101.0
127.0
114.0
117.0
110.0
123.0
105.0
136.0
106.0
110.0
110.0

&^$$$?&$$:$f?f££&

128.0
114.0
109.0
113.0
115.0
"^^fffSf^fffffff-^Xf^fS&i
__114.0

103.0
113.0

'•Q-Z.-MfftySZ&itt^g&X

Res. 3
116.0

117.0
111.0
107.0
107.0
101.0
116.0
114.0
112.0
109.0
115.0
114.0
119.0
110.0
114.0

lill^^SsS'i^il&i^ipl


"ll'slT"
123.0
112.0
111.0
104.0
116.0
118.0
117.0
107.0
120.0
100.0
112.0
104.0
108.0
116.0

lil|illltlilllill|

'<""""'l27j"1"
117.0
101.0
117.0
116.0

115.0
^^v^^^^^^S^ffl^J^
105.6""
^J01.0_


No data submitted
Insufficient
data
X s
Exper.
Sigma
rw_2-00^

'"3.79"
0.58
1.00
1.00
4.00
2.08
3.61
1.15
2.65
0.58
1.73
0.58
7.02
2.89
lllllSlilll

;^^-LS¥SxS5?i^:^:^;^^^:^^iS^
ifS^wi^S^^Si^iii^Si^iWi.
0.58
3.06
1.00
2.52
1.73
5.51
3.06
2.31
2.08
2.52
4.04
12.34
1.15
1.00
3.46


_,,,.

1.53
5.29
2.08
_^J;B8_
i!^^^&S^^S::5i:M^§^
"""1.53 	

	 " 1~15'*"
6.66

S»w*iS§isssS;iisl8!
Rnganal
(R + SR)
_Jg^9jL»
„.„__...„ 	

0.098
0.197
0.197
0.788
0.394
0.689
0.197
0.492
0.098
0.295
0.098
1.720
0.492

§ft;H!lMiS*i|lii


0.098
0.591
0.197
0.492
0.295
1.158
0.591
0.394
0.394
0.492
0.788
3.596
0.197
0.197
_J).591_



0.886
0.295
0.984
0.394
_JW9|_

_^^0.295

0.197
1.345
li^B^ii^S
Jisi§ltei|felilili^lsg
Normalized deviation
Average
	 1JL8.00_
IllllSlllltlllli!
""""112.67
110.67
107.00
106.00
101.00
113.67
110.00
110.67
110.00
115.33
113.00
119.33
109.33
117.33
Ip^lIpSillliilii
l|illll!illilil


112.67
123.67
111.00
108.67
102.00
121.67
114.67
115.67
107.67
120.33
104.33
122.33
105.33
109.00
112.00
iplili^lH


124.67
115.33
107.00
114.67
_JL16.32^

113.67
IIIIIIPIIIIII
J^|iS!5^||;^SgS|i;;^
104.33
^J.08.67

i^f^f^^ffi^f!i^«^fw<^ff^
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
,.^_Ji,, 	
._

-0.78
-1.84
-2.13
-3.57
0.08
-0.98
-0.78
-0.98
0.56
-0.11
1.72
-1.17
1.14




-6.21"
2.97
-0.69
-1.36
-3.29
2.39
0.37
0.66
-1.65
2.01
-2.61
2.58
-2.32
-1.26
-0.40



3.26
0.56
-1.84
0.37
0.56__
ISpi^^ii^^ftiUliS
.........._._....


"-2L61
-1.36 __

^iftfessifcllffll^Pl^B'
tt s Above
U s Below
JMKZ^ 	

QA8
-0.10
-1.15
-1.44
-2.89
0.77
-0.29
-0.10
-0.29
1.25
0.58
2.41
-0.48 '
1.83
fm%m$!Wemi
-------
      ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
                                                                                       28/37
Cesium-137

Lab     Res. 1
                               Exper.   Rng anal
          Res. 2     Res. 3     Sigma   (R + SR)
                                                                     Normalized deviation
                                                            Average  (grand-avg) (known) Tag
VC
VE
VH
VI
¥« XJ"^«
SHU
vo
vs
w
WD
 118.0
 110.0
 121.0
 118.0
?:ilk€\d
 107.0
 108.0
 112.0
 117.0
                   117.0
                   111.0
                   119.0
                   116.0
                  J^IS-'y-l
                   116.0
                   109.0
                   116.0
                   115.0
 118.
 108.
 122.
 115.
*^K
-^
 118.
 109
 112.
 116
                                0.58
                                1.53
                                1.53
                                1.53
                               t'^fpss
                                536
                                0.58
                                2.31
                                1.00
                              0.098
                              0.295
                              0.295
                              0.295
                              K-^-;^-"
                              ^»>>*x;-
                              vv.1- *v,^ ^ •.
                              1.158
                              0.098
                              0.394
                               0.197
 117.67
 109.67
 120.67
 116.33
^^•s^^ r^5^
-- ? -!>.<.$««; -~ —?xj> » ;•,*-;; -,^!«»",x^-^
                                 2.08     0.394      115.67      6.66
                                                             120.33
                                                             111.67
                                                             110.33
                                                     117.00
                                                     110.67
                                                    £!^^;*y>x:; ;<$$&••
                                                     110.00     -0.98
                                                     126.00      3.64
                                                                                   0.38
                                                                 2.01
                                                                -0.50
                                                                -0.88
                                                                         1.04
                                                                        -0.78
                                                                                    1.35
                                                                                   2.69
                                                                                   0.19
                                                                                   -0.19
                                                       1.73
                                                      -0.10^
                                                    ^i;-^M^
                                                      -0.29
                                                   «^J*:,3.^. ^
113.0
108.0
 109.0
                                         2.65-
                                          0.492
                                                                                   -0.29
 Average
       Tag
                             Data sorted by Laboratory Average
                          Lab \ Average	Tag	Lab \ Average
                                                  Tag
                                                                                 Lab
   55.33
   59.00
   93.67
   95.67
   98.33
  101.00
  101.00
  102.00
  103.33
  104.33
  104.33
         x
         x
         X
         u
                           MX
                           CX
                           AL
                           P
                           AY
                           QM
                           EX
                           SF
                           C
                   sv
     105.33
     106.00
     107.00
     107.00
     107.67
     107.67
     107.67
     108.00
     108.33
     108.67
     108.67
                                                  T
                                                  Q
                                                  TR
                                                  PX
                                                  SR
                                                  BL
                                                  BA
                                                  GQ
                                                  AZ
                                                  VS
                                                  ux
                                               108.67
                                               108.67
                                               109.00
                                               109.33
                                               109.33
                                               109.33
                                               109.67
                                               109.67
                                               109.67
                                               109.67
                                               110.00
                              SD
                              JM
                              TC
                              RK
                              HI
                              GL
                              VE
                              NH
                              D
                              CA
                              Y
 • s No data submitted
 0 = Insufficient data
                               TAG SYMBOLS
                        x s Determined to be an outlier
                                                                        ft s Above control limit
                                                                        II = Below control limit

-------
29/37 ESD-LV Performance Evaluation: Gamma
..
Cesium-137

in Water, 6 -No v- 19 98



Data sorted by Laboratory Average
Average Tag
110.00
110.00
110.00
110.00
110.00
110.00
110.33
110.67
110.67
110.67
110.67
110.67
111.00
111.00
111.00
111.33
111.67
111.67
111.67
112.00
112.00
112.00
112.00
112.00
112.33
112.33
112.67
112.67
112.67
112.67
113.00
113.00
113.00
113.00

% responding labs
Lab
XI
QW
QT
OT
FJ
AW
XB
XF
QU
PW
MT
AK
S
NP
EL
L
XA
HE
BB
TD
LR
DH
BM
AU
WR
BO
RX
PM
CS
BC
QZ
N
KH
DR

Average Tag
113.33
113.33
113.67
113.67
113.67
113.67
113.67
113.67
113.67
114.00
114.00
114.33
114.33
114.67
114.67
114.67
114.67
115.33
115.33
115.33
115.33
115.33
115.67
115.67
115.67
115.67
116.00
116.00
116.00
116.00
116.33
116.33
116.33
116.67
116.67
Frequency distribution
Lab
XT
w
VO
UP
QP
MP
I
DE
CP
NJ
IU
OB
JS
TW
SM
AH
AE
U
TQ
QX
JE
CJ
WW
SN
EX
JY
WD
DO
CO
A
VI
EL
DT
LF
HL
Average
116.67
117.00
117.00
117.33
117.67
118.00
118.00
118.00
118.67
118.67
119.00
119.33
119.67
119.67
120.00
120.33
120.33
120.33
120.67
120.67
121.00
121.33
121.67
122.00
122.33
123.00
123.67
124.00
124.33
124.67
126.00
136.33
140.00
231.67
2342.67

Tag






















ft
ft
ft
ft
ft
ft
ft
ft
ft
X
X
X
X

Lab
E
XD
FL
RO
VC
PD
HE
AF
0
M
E
R
BN
BH
FE
X
ss
CE
VH
OM
DD
MV
SI
AJ
sx
NO
RZ
JG
BE
TO
XE
LE
EB
OA
XU



° -'6 T -4
. . .•.llllllllll
I T I T
||H|H|H-. 	
+2

74
n
+6
Normalized deviation of the mean from the known value
• = No data submitted
0 = Insufficient data
TAG SYMBOLS ft
x = Determined to be an outlier It
s Above control
s Below control
limit
limit

-------
             ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998       30/37
Cesium-137

 % responding labs  	Frequency distribution
 10-f	

   •  — -

  0-l^T-
                  -4            -2            6      '      +2      '      *'4            +6
                    Normalized deviation of the mean from the grand average

-------
             ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998
                                  31/37
Barium-133                         Statistical Summary                      166 Participants
The known value of this nuclide is 56.0 pCi/1 with an expected precision of 6.0; the control limits
are 45.6 to 66.4; the warning regions are 45.6 to 49.1 and 62.9 to 66.4
3O(18.1 %) Failed to respond »%^
6(3.6 %) Outliers '
4(2.4 %) Out of control •
     but not an outlier


         Statistic
               . 1O9(65.7 %) Within all limits
Respondents
*• 17(10.2 %) 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
     72.55
    228.21
 52079.28
    314.55
     29.56
      0.07
     53.67
     -4.17
     -0.01
    Grand Avg 53.11
                  3.64
                13.23
                  6.85
                 -5.16
                 -0.80
                53.67
                 -4.17
                 -0.64
1O(7.4 %) More than 3 norm. S.D. »w%
17(12.5 %) Between 2 and 3 norm. S.D
              7(56.6 %) Within 1 norm. S.D.
                           of known value
     32(23.5 %) Between 1 and 2 norm. S.D.

-------
32 / 37 ESD-LV Performance
Barium-133
Lab Res. 1
A
AE
AF
AJ
AK
^AL^
AU
AW
AY
AZ
BA
BB
TJ^"1
MJ\J
BH
BK
BL
BM
BN
BO
C
CA
CE
CJ
CO
CP
cs
b
DD
DE
DH
DO
DR
DT
E_
EB
EL
'^EW'
EX
• =
0 s
56.0
54.0
53.0
62.0 ^
	 "49.6"*
51.0
., V,|4-P_,
53.0 ~
54.0
54.0
59.0
51.0
49.0
	 48.0
"''V4xS^
52.0
55.0
55.0
58.0
53.0
54.0
55.0
~69.6'
46.0
54.0
56.0
57.0
56.0
60.0
55.0
55.0
59.0
53.0
55.0
"l't
58.0
	 63.0 _
55.0
Res. 2
55.0
57.0
56.0
53.0^
42.6
51.0
^ J*4.p_ .
52.0
52.0
54.0
56.0
49.0
55.0
48.0
VjJS,X. ( V X<. ^W^WfWW W«. •? "•
50.0
50.0
55.0
57.0
57.0
57.0
53.0
55.0
56.0
44.0
57.0
58.0
63.0_
54.0
60.0
56.0
57.0
54.0
57.0
59.0
^ 56.0
58.0
__56.0_
57.0
No data submitted
Insufficient data
Res. 3
53.0
55.0
50.0
,,J60LO_
51.0
51.0
"~ 50.0
53.0
55.0
57.0
46.0
47.0
^j48.0_
"48.0
50.0
55.0
57.0
55.0
48.0
53.0
54.0
k^v*^
57.0
49.0
54.0
57.0
56.0
52.0
57.0
56.0
55.0
61.0
52.0
56.0
	 55.0
58.0
_J>2J>
56.0
X s
Evaluation: Gamma in Water, 6-Nov-1998
Exper.
Sigma
1.53
1.53
3.00
.4j36....
3.61
0.00
4.04
1.53
1.00
0.58
1.53
2.52
4.16
^_0.00_
5.29
1.15
0.00
1.15
1.53
4.51
0.58
0.58
1.53
2.52
1.73
1.00
2.08
2.00
1.73
0.58
1.15
3.61
2.65
2.08
1.00
0.00
„ Jl-Pj!?. „
1.00
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.295
0.295
0.591
0.788m
0.689
0.000
j).689
0.295
0.197
0.098
0.295
0.492
0.788
0.000
6.984
0.197
0.000
0.197
0.295
0.886
0.098
0.098
0.295
0.492
0.295
0.197
?0.394
' ' -fV ^JttK
' "v«^**7v
0.394
0.295
0.098
0.197
0.689
0.492
0.394
_0.197
0.000
0.394
0.197
TAG SYMBOLS
Determined to be an
54.67
55.33
53.00
55.00
45.00
51.00
46.33
51.67
53.00
54.33
57.33
48.67
50.33
	 J8.W
46.00
50.67
55.00
56.33
56.67
52.67
53.33
54.67
57.33
46.33
55.00
57.00
55.33
54.00
59.00
55.67
55.67
58.00
54.00
56.67
_ 55.00
58.00
	 53.67 	
, * •-"'<;'*",:• V-''-V •' *'-/'*^
56.00
outlier
0.45
0.64
-0.03
J).55 __
-2.34
-0.61
w-L96
-0.42
-0.03
0.35
1.22
-1.28
-0.80
j-1.47 ^ 	
-2.05
-0.70
0.55
0.93
1.03
-0.13
0.07
0.45
1.22
-1.96
0.55
1.12
0.64
0.26
1.70
0.74
0.74
1.41
0.26
1.03
JS^L
"L41
^0.16_t _
0.83
ft s Above
li = Below
-0.38
-0.19
-0.87
J).29^_
-3.18 II.
-1.44
-2.79
y f •• >t v « ^y-. < "*/ "
-1.25
-0.87
-0.48
0.38
-2.12
-1.64
j-ML™ 	
-2^89
-1.54
-0.29
0.10
0.19
-0.96
-0.77
-0.38
0.38
-2.79
-0.29
0.29
-0.19
-0.58
0.87
-0.10
-0.10
0.58
-0.58
0.19
0.58
-0.67
0.00
control limit
control limit

-------
              ESD-LV Performance Evaluation:  Gamma in Water, 6-Nov-1998
                                                                                33/37
Barium-133
Lab
Res. 1     Res. 2
         Res. 3
         Exper.   Rng anal              Normalized deviation
         Sigma   (R + SR)    Average   (grand-avg)  (known) Tag
FE
FJ
FL
GL
GQ
HE
HI
HK
HL
JE
JG
JM
JS
JY
K
KH
KL
KX
L
LE
LF
LR
M
MP
MT
MV
 63.0
 61.0
64.0
54.0
58.0
55.0
52.0
53.0
4.93
1.53
2.52
0.886
0.295
                                           0.492
60.67
52.33
            55.67
 2.18
-0.22
 0.74
 1.35
-1.06
                     -0.10
  49.0
  56.0
  56.0
  52.0
  52.0
  56.0
46
56.0
57.0
54.0
51.0
58.0
54.0
56.0
59.0
52.0
52.0
57.0
4.04
0.00
1.53
1.15
0.58
1.00
0.788
0.000
0.295
0.197
0.098
0.197
49.67
56.00
57.33
52.67
51.67
57.00
-0.99
 0.83
 1.22
-0.13
-0.42
 1.12
-1.83
 0.00
 0.38
-0.96
-1.25
 0.29
  55.0
  56.0
  51.0
  51.0
  57.0
  61.0
  46.0
  51.0
  54.0
  56.0
  61.0
  60.0
  49.0
  52.0
  50.0
  45.0
  55.0
55X)
56.0
52.0
51.0
56.0
59.0
46.0
50.0
54.0
55.0
60.0
61.0
41.0
53.0
44.0
45.0
58.0
55.0
58.0
49.0
50.0
55.0
57.0
48.0
55.0
54.0
54.0
60.0
58.0
48.0
50.0
43.0
45.0
56.0
0.00
1.15
1.53
0.58
1.00
2.00
1.15
2.65
0.00
1.00
0.58
1.53
4.36
1.53
3.79
0.00
1.53
0.000
0.197
0.295
0.098
0.197
0.394
0.197
0.492
0.000
0.197
0.098
0.295
0.788
0.295
0.689
0.000
0.295
55.00
56.67
50.67
50.67
56.00
59.00
46.67
52.00
54.00
55.00
60.33
59.67
46.00
51.67
45.67
45.00
56.33
 0.55
 1.03
-0.70
-0.70
 0.83
 1.70
-1.86
-0.32
 0.26
 0.55
 2.09
 1.89
-2.05
-0.42
-2.15
-2.34
 0.93
-0.29
 0.19
-1.54
-1.54
 0.00
 0.87
-2.69
-1.15
-0.58
-0.29
 1.25
 1.06
-2.89
-1.25
-2.98
-3.18
 0.10
        II
N
NH
NO
NP
O
OM
OT
P
  56.0
  54.0
  51.0
  56.0
  48.0
  54.0
54.0
55.0
                    54.0
54.0
54.0
53.0
1.15
0.58
1.53
 .197
0.098
0.295
54.67
54.33
52.67
58.0
48.0
54.0
60.0
53.0
54.0
2.00
2.89
0.00
0.394
0.492
0.000
58.00
49.67
54.00
 0.45
 0.35
-0.13
 1.41
-0.99
 0.26
-.38
-0.48
                                                                -0.96
 0.58
-1.83
-0.58
  58.0
  51.0
  54.0
54.0
48.0
53.0
54.0
39.0
53.0
2.31
6.24
0.58
0.394
1.345
0.098
55.33
46.00
53.33
 0.64
-2.05
 0.07
-0.19
-2.89
-0.77
 •  = No data submitted
 0 = Insufficient data
                                TAG SYMBOLS
                         x = Determined to be an outlier
                                                     tt = Above control limit
                                                     $ = Below control limit

-------
34/37 ESD-LV Performance
Evaluation: Gamma in Water,
6-Nov-1998

Barium-133

Lab
PD
^•pJg'S
PM
PW
PX
Q
QM
QP
QT
QU
QW
QX
QZ
R
RK
RO
^fiJR.'"
•'Kir':
RX
RZ
S
SD
SF
SI
SM
SN
SR
ss
sv
sx
T
r^T^P
TD
-'"TF^-,
TO
TQ
TR
TW
U

"uwf
UP
vUR^
uv
ux
•- ^ _•"*•> w
; TTV
V*%A ^
• =
0 =

Res. 1
>t 	 56.0 rm
^ivT^^^A
5LO
50.0
55.0
52.0
52.0
49.0
44.0
50.0
49.0
52.0
49.0
52.0
47.0
50.0
,. y"5^*^25t']^
"l^^f
"$ti/6^lO^.;-
53.0
56.0
56.0
46.0
52.0
57.0
55.0
51.0
56.0
52.0
59.0
52.0
^5^2439?
	 47.0_
,;>|^f3If^f
54To
53.0
54.0
52.0
55.0


Res. 2
583 _
"*-"", /;\^^C^
51.6
50.0
58.0
53.0
58.0
50.0
43.0
50.0
50.0
52.0
53.0
53.0
42.0
	 5j2.0_
&»^v"'^?- "^
i^^f'j,
\^:Mi'J):^
55.0
55.0
52.0
48.0
56.0
51.0
51.0
52.0
48.0
52.0
55.0
54.0
r "^Mom
._^48^
W5'™;?^'
61.0
51.0
50.0
55.0
55.0


Res. 3
Exper.
Sigma
	 i57.0 	 __1-00_
-;^^-'^V^"": "' V-'-, I> -s^k|
53.0
51.0
58.0
52.0
57.0
46.0
47.0
48.0
46.0
53.0
57.0
52.0
45.0
__49:0_
^?^^k^r "•'
spfS
-^^t-ot-
57.0
58.0
52.0
48.0
53.0
58.0
45.0
56.0
49.0
53.0
56.0
55.0
oHio?
48.0
C^-V-r^'r
63.0
51.0
50.0
52.0
53.0
s "«*S\-»S»fi*i •»." «.V
1.15
0.58
1.73
0.58
3.21
2.08
2.08
1.15
2.08
0.58
4.00
0.58
2.52
w_jy>3
|v,s\'!^^,V^,'"
i^fl^i
,\",v,«0-?8 :<'
2.00
1.53
2.31
1.15
2.08
3.79
5.03
2.65
4.36
0.58
2.08
_1.53_
jjjTf'. "?'j"/» "«S"*"'
-, „'- •"?' y^\J.vvt v"
«... 0_.5if _
~^^^|^'"-
^4^73
1.15
2.31
1.73
1.15

V^VV^ -'/ s-^V^^^-'-^^R1'^ -^r^^vV''1-?
55~0
"rr^v'^V1'
50.0
58.0
" O'\s v^ ^ft^^V" '
' '^ ^ ,A' ^V- ' ^ * "* ^
"<.v^\' •>*''" ^<^ ^
56.0
; ;--;\-,{;: v
48.0
55.0
'v; ,.# '%*&", ;' t^.s
^ ^ % i j^j w^
N ^ "" '"V". >
„ .,65A,
^-."-1's^X- V'
49.0
52.0
,.„ ;w <":'A ^ /•' * "
* s \ " / ?
/•* Vjftft.*.'- 	 ^ .-..•"•
No data submitted
Insufficient
data
X s
. ,.,0;,6A_
-,. Vf-— \'-V"''^
1.00
3.00
^> %> <>•*&•<' -.^ %' w/"*;\ '
°\ - - " " " ""
* 	 '..••. ^^^^^
Rnganal
(R + SR)
0.197
?; ', , *\ - , .. -
0.197
0.098
0.295
0.098
0.591
0.394
0.394
0.197
0.394
0.098
0.788
0.098
0.492
_J1295_ _
*s ''^I^V'ft?-' V,\;
11 ' t ' ' ' '''
"•"C11 s '"''''* ' ** ' ''i'
*• '- Q,i698;i;--- /i
0.394
0.295
0.394
0.197
0.394
0.689
0.984
0.492
0.788
0.098
0.394
0.295
1^098??, •-'
0.098
;"'% ---',,-, ',>;'
0.886
0.197
0.394
0.295
0.197

ft/-^ ' ,y v Vf*^11*'.
0.098
,t«-.^.: >^-',;-:
0.197
0.591
*" "' * X * * ' f '* '
t4 \f *-*f ' , ^t
""••• 	 ' . •;'. ff * ,
Normalized deviation
Average
57.00
"'/C^/'"-"
51.67
50.33
57.00
52.33
55.67
48.33
44.67
49.33
48.33
52.33
53.00
52.33
44.67
50.33
.'v,.',^"' *~ ."f'-l
;';;'-'\ V, ••-,
•. '£t£t d ^7 •.'
' «. ^ xrO*^/ f T
55.00
56.33
53.33
47.33
53.67
55.33
50.33
53.00
51.00
52.33
56.67
53.67
c-?:iiM
	 47.67
' r^y^>"
59.33
51.67
51.33
53.00
54.33

\;-ff;'"A>:,' -,-
55.33
;->l'',;'.?%,ir
49.00
55.00
* & ^'X
""^ * %•*•• v

TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
1.12
Vt"!;4^^v '". ' :~
-0.42
-0.80
1.12
-0.22
0.74
-1.38
-2.44
-1.09
-1.38
-0.22
-0.03
-0.22
-2.44
:°JKL_. „.
"•^"I'V , f^;\^T " •.
^M^fy^^
v*r 3'J91"',y' "
0.55
0.93
0.07
-1.67
0.16
0.64
-0.80
-0.03
-0.61
-0.22
1.03
0.16
'7:''"^i2J^'^
,'J^!^?L,'l
^^JTJ-^^ ;r\~
1.80
-0.42
-0.51
-0.03
0.35

,?,: v>XNsf^-'ivv'x _ V
VI0.:64.. J
:^>^-]':'/;.' -v>-
-1.19
0.55
' < •Jiv>''"V5iX£ " "-V '
- ,' !• / \ X -,
' 	 **"; fttfSf. •: . •«*
ft s Above
11 s Below
0.29
1 ' v . • »
-1.25
-1.64
0.29
-1.06
-0.10
-2.21
-3.27 U
-1.92
-2.21
-1.06
-0.87
-1.06
-3.27 U
-1.64
^ '-y'-N// \vw*,, • s
\"v"/ly^
??3M,^:x
-0.29
0.10
-0.77
-2.50
-0.67
-0.19
-1.64
-0.87
-1.44
-1.06
0.19
-0.67
':-&6&, ~JxH
:2.41_^ _
"- »''-!' ' V'*'
0.96
-1.25
-1.35
-0.87
-0.48

j-T <,;'',; ' ' • ,
-0.19
- V:s:v -'"-• ,';
-2.02
-0.29
' ' *y ?*' '
-. f'-Sf'f ' * 0

control limit
control limit _,

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ESD-LV Performance Evaluation: Gamma in Water,  6-Nov-1998
                                                                                 35/37
Barium-133

Lab    Res. 1
                        Exper.   Rng anal            Normalized deviation
    Res. 2     Res. 3     Sigma   (R +  SR)   Average  (grand-avg) (known) Tag
VC
                         1.15
                         2.00
                         2.08
                         0.00
                      r^—r--
                      0.197
                      0.394
                      0.394
                      0.000
                         55.33
                         52.00
                         54.33
                         51.00
                             50.0  _  9-°°_w   ,MT°_ _^_59-°°t	„  1-70   _^
                             49.~"*"1o!bo*"0'^ 6.666   """"""	*"'  ^""^"

Y       53.0      53.0       56.6      1.73     0.295       54.00       6.26     -6.58
Average
 Tag
  Data sorted by Laboratory Average
Lab   Average	Tag	Lab | Average
                                                 Tag
                                                   Lab
   24.67
   25.33
   26.33
   44.67
   44.67
   45.00
   45.00
   45.67
   46.00
   46.00
   46.00
   x
   X
TC
CX
MX
RK
QT
MT
AJ
MP
OT
LR
BH
46.33
46.33
46.67
47.33
47.67
47.67
48.00
48.33
48.33
48.67
49.00
                              CJ
                              AL
                              KH
                              SF
                              XI
                              TD
                              BC
                              QW
                              QP
                              BA
                              XT
49.00
49.00
49.33
49.33
49.67
49.67
50.33
50.33
50.33
50.33
50.67
XB
UV
XF
QU
NP
GL
SN
RO
PW
BB
JS
 • = No data submitted
0 = Insufficient data
                        TAG SYMBOLS
                   = Determined to be an outlier
                                           ft = Above control limit
                                           Jl = Below control limit

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36/37 ESD-LV Performance Evaluation: Gamma
Barium-133
Average Tag
50.67
50.67
51.00
51.00
51.00
51.33
51.67
51.67
51.67
51.67
51.67
52.00
52.00
52.33
52.33
52.33
52.33
52.33
52.33
52.33
52.67
52.67
52.67
52.67
52.67
53.00
53.00
53.00
53.00
53.00
53.00
53.33
53.33
53.33

% responding labs

10- 	
o m
° -6 ' -4
• = No data submitted
0 = Insufficient data

Ds
Lab
JM
BK
VI
SS
AK
TR
TQ
PM
M
HK
AU
VE
KL
X
WR
SV
R
QX
Q
FJ
XD
XA
NJ
HI
BO
TW
SR
QZ
I
AW
AF
SD
P
C

in Water, 6-Nov-1998

ita sorted by Laboratory Averag
Average Tag Lab
53.67
53.67
53.67
54.00
54.00
54.00
54.00
54.00
54.00
54.33
54.33
54.33
54.33
54.67
54.67
54.67
54.67
55.00
55.00
55.00
55.00
55.00
55.00
55.00
55.00
55.00
55.00
55.33
55.33
55.33
55.33
55.33
55.33
55.67

Frequency distribution
_
• f 1
• •-•••-IllllllllllH--
T
SI
EL
Y
WD
O
KX
DR
D
VH
U
NH
AY
VS
N
CA
A
W
UX
RZ
L
JE
IU
E
CO
BL
AH
VC
UP
SM
OM
cs
AE
WW

fe
Average Tag
55.67
55.67
55.67
55.67
56.00
56.00
56.00
56.33
56.33
56.33
56.67
56.67
56.67
56.67
57.00
57.00
57.00
57.00
57.00
57.33
57.33
57.33
58.00
58.00
58.00
59.00
59.00
59.00
59.33
59.67
60.33
60.67
66.67 x
107.00 x
2713.00 x




Normalized deviation of the mean from the known value
TAG SYMBOLS ft e Above control
x s Determined to be an outlier li = Below control


Lab
QM
FL
DH
DE
JY
GQ
EX
S
MV
BM
sx
JG
DT
BN
VO
PX
PD
HL
CP
HE
CE
AZ
NO
EB
DO
XK
K
DD
TO
LF
LE
FE
RX
OA
XU



m
+6
limit
limit

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            ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998       37/37

Barium-133

 % responding labs     	Frequency distribution	

 10-	
                            • 1  •••••••lilllllL  i.
     -6           -4           -2            0           +2           +4           +6
                    Normalized deviation of the mean from the grand average

-------