v>EPA
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA 600/R-95/008
January 1995
Radionuclides in Milk
Performance
Evaluation Study
A Statistical Evaluation of
the September 30, 1994 Data
0593RSD94 cov-008
-------
Radionuclides in Milk
Performance Evaluation Study
September 30, 1994
Environmental Protection Agency
Environmental Monitoring Systems Laboratory
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Radionuclides in Milk; September 30, 1994.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Chemist
Radioanalysis Branch
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
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EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 1/27
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
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2/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.
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EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 3/27
Strontium-89 Statistical Summary 113 Participants
The known value of this nuclide is 25.0 pCi/1 with an expected precision of 5.0; the control limits
are 16.3 to 33.7; the warning regions are 16.3 to 19.2 and 30.8 to 33.7
72(63.7 %) Failed to respond •
1 (O.9 %) Outliers
5(4.4 %) Out of control
but not an outlier
Statistic
S 29(25.7 %) Within all limits
Respondents
• 6(5.3 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
22.63
5.76
33.21
25.47
-9.50
-0.41
22.33
-10.67
-0.46
Grand Avg 22.19
5.11
26.12
23.03
-11.23
-0.55
22.33
-10.67
-0.52
7(17.1 %) More than 3 norm. S.D. ^
• o
i.
5(12.2 %) Between 2 and 3 norm. S.D.
15(36.6 %) Within 1 norm. S.D.
of known value
14(34.1 %) Between 1 and 2 norm. S.D.
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4/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Strontium-89
Lab Res. 1
A
AA
AE
:AF,'
AI
AK
AL
AT*
AP
AU
AY
BA
BC
BG
BH
BL
BM
BO
BW
C
CA
CJ
CO
CP
CQ
D
DD
DE
DL
DM
DT
DY
E
EA
EB
EH
EL
FE
FL
GE
yfp-
HU
• =
0 =
21.0
30.0
' :'*' * -
24.0
* '' 'V'
* -: ,/';'v-;
13.0
39.0
12.0
"
23.0
28.0
29.0
23.0
22.0
22.0
"
22.0
23.0
24.0
22.0
17.0
17.0
29.0
Res. 2
22.0
31.0
w •',' . V '. ' ',
24.0
' •• " •••,''''''
' , • v .->' , ,
'" s/''%
10.0
41;0
11.0
21.0
23.0
,,
25.0
\
22.0
22.0
24.0
23.0
22.0
23.0
24.0
18.0
18.0
29.0
No data submitted
Insufficient
data
X 3
Exper. Rng anal
Sigma (R + SR) Average
1.53
0.58
i- ^ , ^ '' '• J s .,,„
1.73
" « ' ' \ -"
3.00
LOO
1.00
1.00
2.65
2.31
0.58
1.73
2.52
0.58
1.00
0.58
2.00
1.53
0.58
' '<
0.00
0.354
0.118
0.354
0.709
0,236
0.236
0.236
0.591
0.473
0.118
0.354
0.591
0.118
0.236
0.118
0.473
0.354
0.118
0.000
22.33
30.33
\ ff
25.00
10.00
40.00
12.00
22.00
26.00
27.67
22.33
23.00
24.33
22.67
22.00
23.33
24.00
16.67
17.33
29.00
TAG SYMBOLS
Determined to
be an
outlier
Normalized deviation
(grand-avg)- (known) Tag
0.05
2.82
-. -I'-/ ; >, :', **
0.97
"'", "', ' '••,', ' •
---''' •',,' \\
-4.22
6.17
-3.53
-0.07
1.32
1.90
0.05
0.28
0.74
v 1^
0.16
-0.07
0.40
0.63
-1.91
-1.68
, , - ,
2.36
It s Above
Ji s Below
-0.92
1.85
<*\ , -v% :'/'*-/,-->
0.00
-'.-'•; '* ''
---': : '•*-,
-5.20 li
-„" ™ , * :
5,20 x
-4.50 Jf
-/ - • '
-1.04
0.35
, --'' - ' * "
0.92
— v '•'' »T
-0.92
-0.69
-0.23
/ - ' •
- *
~ _ »
, ' ' ' ,»
-0.81
' *
-1.04
-' *
-0.58
*
-0.35
-•
-2.89
-2.66
-, \ s , •.
''• - - • '
* ,' - *
1.39
- -,'-<»,
control limit
control limit
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EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 5/27
Strontium-89
Exper. Rng anal Normalized deviation
Lab Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
24.0
23.0
24.0
0.58
0.118
•.Vs ^ •• ,_•,•,•$« ^ s •.O "" * ^v> •• t ^ •• ., •>
23.67 0.51
JfR , ~\.-. *<$ V' .M --- "-^-r1 ,\-W";' - v«^» •;' ': *!->-
^ . ".-X \ •• \ ,.\\ . ,.\\v>" •.•" . -. ^iiV v1- .v ^. %*.•• •-
K
KX
17.0
23.0
21.0
3.06 0.709
20.33
-0.64
0.236
-1.62
16.33 -2.03 -3.00
N
NHE
NJ
o
PB
PC
PI
PM
PP
PT
24.0 23.0
5 •- V>:''"'- ' vV" •-1-' " " '
14.0 18.0
16.0
15.0
23.0
26.0
; s •• ••
16.0
0.58
6.11
0.118
1.795
Q
QB
QJ
QK
QX
QZ
R
RA
RK
23.0
22.0
22.0
24.0
16.0
22.0
17.0
28.0
v ^ j_ -\X
18.0
25.0
36.0
19.0
22.0
16.0
24.0
25.0
24.0
38.0
19.0
22.0
15.0
0.58 0.118
2.65 0.591
3.51 0.827
-1.96
15.67 -2.26 -3.23 U
1.53
7.57
1.73
0.00
0.354
2.245
0.354
0.000
1.00 0.236
25.00
21.67
23.67
32.67
18.00
22.00
16.00
0.97
-0.18
0.51
3.63
-1.45
-0.07
-2.14
0.00
-1.15
-0.46
2.66
-2.42
-1.04
-3.12
• = No data submitted
0 = Insufficient data J
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
& = Below control limit
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6/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Strontium-89
Exper. Rng anal
Normalized deviation
Lab Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known)
Tag
SS 22.0 21.0 23.0 1.00 0.236 22.00 -0.07 -1.04
T 23.0 23.0 18.0 2.89 0.591 21.33 -0.30 -1.27
- s •• ^^V" A^ ,,_* *:•• 'Yv *,*~^K* „-.•*«*
TA _*"X ' '•'< \ ••-•*. **'* " r\ ; :*"' _ ,;"
V "" fW " C '•> "• **'••''"' •-," " '»"'<' A v , s' ' ' >> * '
' c V '••' ^(••'•'^ s>" " •*••" ^^'^" <^« "•&''',?• '?-z?t?
~" " - * '-" ^ :-' ' - ' '•.<• ~^i -• ' rs,', ,. j * '
«" v »^;v^.;
',' *'-'-
TD 20.0 23.0 29.0 4.58 1.120 24.00 0.63 -0.35
TE * ' : :; ' VX * 1' - : ",• ^ .* ^£",' * *J* i:-
fi; ,,, , '•'' T^f-t' '!>>«' v y'1"^:"^
•• •••'-.'' •• ; •-•••-•• ^ '% ^ j^ ., ;% * t/ ^ *• -.^ ^ % * ""
TFP - - ' " ,"" -V ",-'";'< v- * ' ^ * ^ - s --- - , ;,'
AJt v. ^ -. •• -. "; -. .. % j * *''£'•
'C^>^ ^r^' ^^ , "", - ^ , '''-
'"-"'-'^ s \^ "'•• ^ - v\''f ', ^1-
^ > •••• •. j % ^ j ^ v •• f -.-.
'< %•" v '
;';,y/^;0\r r'-"-\^? "^s;;^
1 '~"^> -'',,^ Tt-t- ;:''¥s ™-'<5 '•'"•' %>> '-'',
' •. ""f "" ""' /* '^, "" JS •• \'j. „, - ^ f "• "•• X'"''* " f< s
; ^ * " " --'" -^ ' '" <${"'* " Y -*"
"'!»*>^\
,: V,"st;
"V •>'"'' "" ••" ''
;~:»'r!;
TQ 35.0 33.0 29.0 3.06 0.709 32.33 3.51 2.54
\ff1O '"" % Vx."\/ v*T, "" ^'VT^-CV^-!1 •'<^;^>"VN'1^ W'-,XX
- X «S ••" ^\ s ' "-::••", ,V, * ^ ,-• \-- ^ V"" i%
" 's s /A'^ 'f v *• J "• •- s " '
x '•'' ' A ^_ s J-1 ^ ., "" * f ^
J ''''''' {''''•'' * *•'''•'•- % "" ^ '/*""• ^''"^ /&• x" «
" , ,"-/' /"" '"'" " " ," X . " V*'^*^^
^ •"•" <.
>, ' ' *-' * "
U 14.0 12.0 14.0 1.15 0.236 13.33 -3.07 -4.04 $
tWt :''C' V "A ' ' v! - V>' -',1 :-;'! r* : -t '"^f'vlf*
-•\ifMtf "•'';•• •• -. ^^••' •• '••'•!•, - "••*•• ''-%''' ~"\ iV '-'•'' - A'
'/>"V-' "'" ',£/• ',"'•" --v-'j\
_„ j, ,^,, -^^^ **v-- ^ r ; ;•;> y^ ,
V'^'
VG 29.0 28.0 28.0 0.58 0.118 28.33 2.13 1.15
VL 21.0 18.0 _21.0 1.73 0.354 20.00-0.76 -1.73
s VAf : ~ -- , " ' ' ,r_X '< i %" : ;'; '\~t xj;. v '- /, . ^
' ., s s %' s , - " .,-$ ?'; f v- ^ ' * •- '* , , "" '' ^ ''
•; V^V: ';iVl" ^ '\^^^- ":^y"
" '" ', \ -' " -"- v ' ;'-
^ s v *•• >. ,"• •• ^ '
>;\ X\, "X " -v : ' -: ,-••-"
•- ''T-^"~, w- -''-':"V:' -Nvv~;kC^~%/;:
s' \' '' ' *" '^ "•- ^ *" A * V1* S i^^ / •>
, ' '"' "" ,'< •.''•*'• ' ^ •• Xs" * % * *
; .^';^v,'-w/''.^'''\'^!-'
s<.;f/,
•• ^ js ;• _
,•?*+ 'r
W 19.0 21.0 21.0 1.15 0.236 20.33 -0.64 -1.62
^ - V.-. ,-. -. J •„• ^%-. ^ ^ ^ M-A -. % ^VJ^ V^W ^ •«, V 4
xy j\ ' ^ "" v _.-•••' "'"'•-., ^^^ ' ' •• '
^^ ••"•'' - , . \V ^ ^ "" ^ r' < , •• "" % s ^ v
WB '•' ' -"' v""'\ - - -s/""-^\"-
•.-.-.% ^ ^ •«• N% ^ __ ^ ' , •• s V ^ '•>••••
,"""• ^ ' ss, f
^"- s ^ ^ % ' " '" \ "" L s J J "" f
^ J ' '' ••'
%v *% s " v •>" •.'"'• "*"•%* ^ -^ !S T f "> '"' ^ "V T "^f "tC"^"
/ •» "" ^ ' V * ,: s *• ^ ' f ,. ^% '"'"'•
•. """ ^ ^ ?,<• •! sx '••"••''^ ^ * ^v ^X ^ '"•' '*
\ -./^ ,- 'yY\v"'£ '*"*'"*'; .--•'/ '-•
•*X" ~~" '"' r
'•-, 9
/" V ^ -.
':?•' '
Y 29.0 27.0 29.0 1.15 0.236 28.33 2.13 1.15
Data sorted by Laboratory Average
Average Tag Lab
10.00 U AU
12.00 U BC
13.33 U U
15.67 11 PC
16.00 U S
16.33 LM
16.67 EL
17.33 FE
18.00 QZ
19.33 NJ
20.00 VL
20.33 W
20.33 KX
• s No data submitted
0 = Insufficient data
Average Tag Lab
21.33 T
21.67 Q
22.00 SS
22.00 R
22.00 DT
22.00 BH
22.33 C
22.33 A
22.67 DE
23.00 CA
23.33 N
23.33 E
23.67 QK
23.67 J
TAG SYMBOLS
x = Determined to be an outlier
Average Tag
24.00
24.00
24.33
25.00
25.00
26.00
27.67
28.33
28.33
29.00
30.33
32.33
32.67
40.00 x
1T = Above control
ii s Below control
Lab
TD
EB
CJ
PT
AK
BL
BO
Y
VG
HU
AE
TQ
QL
BA
limit
limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 7/27
Strontium-89
responding labs Frequency distribution
70 .
10
• • j IJBM JBJ I|I||BT • jla • I
!5 Ij 5 +2
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10-
•• ••• ihiLi • • !• •
If •• >•• IfliLf
-6 -4 -20 V2 +4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 8/27
Strontium-90 Statistical Summary 113 Participants
The known value of this nuclide is 15.0 pCi/1 with an expected precision of 5.0; the control limits
are 6.3 to 23.7; the warning regions are 6.3 to 9.2 and 20.8 to 23.7
63(55.8 %) Failed to respond
2(1.8%) Outliers
Statistic
, 45(39.8 %) Within all limits
Respondents
•• 3(2.7 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
15.70
3.74
13.96
23.80
4.67
0.19
15.50
3.33
0.13
Grand Avg 15.15
2.48
6.17
16.40
1.02
0.06
15.33
2.22
0.13
2(4.0 %) More than 3 norm. S.D. .,
3(6.O %) Between 2 and 3 norm. S.D *'
37(74.O %) Within 1 norm. S.D.
of known value
8(16.0%) Between 1 and 2 norm. S.D.
s i
-------
9/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Strontium-90
Exper. Rng anal
Lab
A
AA
AE
AF
Res. 1
16.0
16.0
16.0
17.0
Res. 2
16.0
14.0
17.0
17.0
Res. 3
15.0
15.0
16.0
Sigma (R
0.58
1.00
0.58
16.0 0.58
+ SR)
0.118
0.236
0.118
0.118
Average
15.67
15.00
16.33
16.67
'AI ' •' - * V '-„':, - -;-'l!\ X', >- -r ' , - - ' - ' -
AJ
AK
AL
: AN
AP
AU
AY
BA
BC
BG
BH
BL
BM
BO
BW
C
CA
CJ
CO
CP
CQ
D
DD
DE
BL
BM
BT
BY
E
EA
EB
EH
EL
EX
FE
FL
•;car
HP
HU
HX
15.0
17.0
-,- ;
16.0
16.0
17.0
21.0
13.0
14.0
16.0
15.0
16.0
' "• \ s-*. >
16.0
16.0
17.0
20.0
14.0
14.0
16.0
'-* ,'•/ -3 .'
16.0
17.0
/ *J * ",'' ' v---. , -•'
';- -%- '".
18.0
16.0
17.0
17.0
13.0
13.0
18.0
0.58
0.58
1.15
0.00
0.00
2.08
0.58
0.58
1.15
0.118
0.118
0.236
0.000
0.000
0.473
0.118
0.118
0.236
15.33
16.67
16.67
16.00
17.00
19.33
13.33
13.67
16.67
Normalized deviation
(grand-avg) (known) Tag
0.18
-0.05
0.41
0.52
; --^v;^< :'s:
\ \.
0.06
0.52
f*f * "" ' "' s -.-,•'
" "\ ' ^
0.52
0.29
0.64
1.45
-0.63
-0.51
6.52
v. t-.f v. . f. •.:•.-.•. y-v , -M
0.23
0.00
0.46
w0.58 ^
11 l'"^ ' •• w * s
"•*"• s ""' "•
- 's : , »' ''
0.12
0.58
v''V^' '"-/,;•-'<
-'' .:'-'**:''' • ,
0.58
0.35
0.69
1.50
-0.58
-0.46
0.58
*•- ' - \t ' ''••'• * •."• y,1- <.. •. ^ ' "•' ^ -.'-'• """^ v o •• j ifr f -.
8.0
17.0
15.0
18.0
12.0
, >
18.0
16.0
15.0
>
16.0
15.0
15.0
12.0
----- ,"> , -
33.0
* -.
12.0
/ ' . '~ '•'
16.0
14.0
16.0
12.0
19.0
17.0
14.0
16.0
14.0
16.0
14.0
c n : , - '' ••
32,0
<••
6.0
17.0
15.0
19.0
15.0
\ - '-'
,- '- ,
18.0
17.0
± -• ,
15.0
-; '••-, ^ -';!;"'"
16.0
16.0
16.0
14.0
<• • ,* -^
'". "" '•; :-, s '' '"'^
x- 34 JD
'- ; ' '">
• = No data submitted
0 a
Insufficient
data
X =
3.06
. ." , -
0.58
0.58
1.53
1.73
= - ,
0.58
0.58
~'
0.58
0.00
1.00
0.58
1.15
1
1.00
0.709
0.118
0.118
0.354
0.354
0.118
0.118
0.118
0.000
0.236
0.118
0.236
0.236
8.67
s J ,.
16.67
14.67
17.67
13.00
' - ' ' v ;- -
18.33
16.67
t;
14.67
' ,
16.00
15.00
15.67
13.33
•}.:•.::'•• v
33.00
TAG SYMBOLS
Determined to
be an outlier
-2.25
*' - < • ;: -"'"-;
0.52
-0.17
0.87
-0.75
* •• " s ""'*••
- ;\ :-:,;-
1.10
0.52
." ' *. -*',*"' ' -
-0.17
. - -^ -', * ": ' -> :. -
0.29
-0.05
0.18
-0.63
tf '• ^ ie
"'-):*-' ',"' -- '':-'•'
/''-; 6.18,;; ":
' -">, ''. *• .'"
1T = Above
•H & Below
-2.19
>'----;"-- ;;; ».\.
0.58
-0.12
0.92
-0.69
_--,,"- ;-V-i, -,
\ "* * *'
- " \ s> > ^
1.15
' ' * • '
0.58
>.-;-'"-.":\*;\
-- -\ ,' ' *
-0.12
; ,- ">>: '-•;'''
0.35
: '"•
0.00
/' •
0.23
,' ' ' * -
-0.58
- "-' , -, *' -
.y''-' ''/'':* '
-',: ' ." , -'-*,*. ,
,6,24 X
'* '
control limit
control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 10/27
Strontium-90
Lab
"icr-
5 ;
'•TfTTT *"••
•OiLK-^
J
• •• "flj-\
.»i T^t'
ITfii .. ^
' <• i ' *
'!£>''-
* s
:- "tint -,
vf^Liv*
KK
L
Tf *A * ss
• -svf^
:-1LE>
v"LF-vi
St
;-M-:
MA
s; •-•.
'" IMP!" -^
''MP:
lVtti>
I ^JJ.I^£
*fcjB*% y
M.Vv
N
NH
NJ
Q
•\
PB
PC
PI
PM
PT
PV
PW
PY
Q
QB
QJ
QK
QL
QZ
R
RA
BJK
S
Res. 1
\ .... ]• ., v J\s s ^ -^"V" -. ^ -v ^ "•
^ •. ,-.--.. * s\ .,;tC'iv''" v •• v X^'V*
\ "•'' "" s ^ '\ \X!"*^.Vk
- -Ao ss >-\ ^*\
16.0
'"^"x"r;;r: ••*•:
. -! ly,, x ' ; ijV^ ^ >
o .. **v * ^ $;x*x* ^xj:x
* JV/* }^T Cx^Ex*'
->' -~ - , $*&* " x-xV*1
X* ^ v\ XXs 'XX^X**X\SS
; ^; '"V^ '••••'X..--'^"
*••* S'X v -.--x < ^ v:"'"^s ^ '
15.0
16.0
__ s ;-•.•. •.-.>. •. •• ^"-s -.V s\ ,s « v-, \
s ^ X% •• s v *• ' s svXs ^ ••
f~ "5- 4^- -- V^-
% s ^^ ••
--.-.0"i 1.7* •- s *• " - -
^ "; •• "••,-,"• ^ ^--'' ••
;;> \~y^:V\:'
/; T>;~^,^
"i " '' '" ^-! -1- ,« •-
^ ^ •- ^ \ v% - \ ^
'-. ^-. ^ ^ "• s ^ ^
\ ";\ •-'•''-, -\,-'- >
;>\:^r ^-, **
-. ''.)• o/%v --"^x ^ ••^
' •• •> s^ ^ "" % ^ v '••.''
^ sx c; ^ -o -- -. .--•-•. ^
14.0
•. '•'• ^ ^ \ ^^ v w ^
14.0
\ } ' ';! ;,
V '-, : - "
19.0
: - >, v, ' , -
13.0
8:0
- • - >",* ^ • j
- • • ~ ,
21.0
16.0
13.0
12.0
15.0
13.0
x _,
12.0
Res. 2
^'£k** V.
^••••^^v vsjf •:X'-\ ;s''-:':
^ Jc.1- v '• v xN^'i"v ^ % s •• "•* s
\ " ^V--^--<- "V":-"
17.0
••' '^""'i^ \*>*^\ f
^jX"?^^ C-f ^
- ^ si"""''"' - •> "• '""V*'
"*V A\ \V-" sX*"' -- "
h*J**? ' , \"\ ^ " - - -1"-
^"^ ^ s "• * \ "" •• \ ^ '"'" v s"
•• i\ s ^ *" ^>-%- v - , "^ ^
%__"'•'' s\ ^ •••• S S'"'-' ^
15.0
17.0
^ X^^"- "•••>•• !X" *"
\ '''''• ~\ : ^ """"^
-.\s "i; "• \ \ s ^ v ' "
'••-<'•:•'•' ^ \ •• \
^ " v " " ", V •r
••^ ^ ; ""XV*" ^ ^ •• ^^
;% !O ~ ,, ?\
-.^ \ A ^ ^
,*• "" S "" *' '' - -,\
s? % '•''•- %"
v\% "" ^ * \"" """*
I^W:': ' :/v
>. ^•'"'^ x "^ 5
< V ^X^ s ^ s "" •,""•*
\ ";"; ^y "'" J- ' X;
14.0
^*\"v\> " J0
15.0
-* •** ' s- " \' •<-
.'' - \; , \~
20.0
'•,'"'" X""
^ ' - -' . ',*•'
14.0
9.0
\^ ^ ~ >; 'f ~
16.0
XV _"
16.0
11.0
12.0
15.0
12.0
'
10.0
Res. 3
€ii^<-
^ ^^;^" " s ••\s
^ O '\ ^^ V ""
:,-- ,- -os
16.0
"-> r*^' ;,-"
"-.Ci'vV - -
* ^X^*V.\S^ ^
r v \ ~
vf\-i\ " ; ,
v " ' t*'* r
14.0
17.0
% ^ o% X1 '
^ ^ * -, •• A '
1 s ^ s _\x
' \ '•''
V\-- - ,
w ^ f ' ™ ^
•*•.-, ^ ••
Y;^ ~
^ ^,--'
14.0
16.0
''--to^'" " -
V-- '
20.0
14.0
9.0
17.0
! -
17.0
10.0
12.0
15.0
12.0
•>
12.0
• = No data submitted
0 =
Insufficient
data
X s
Exper.
Sigma
,• ' - - !K: - .' :
0.58
^ f. •.-.•:•.•.•, \-. •.
•• - ' , \ * -
1 , " - X!
- *
0.58
0.58
s* „ ; ° -
\ s ^
v '" S S
\J " -
0.00
1.00
0.58
0.58
0.58
2.65
0.58
1.53
0.00
0.00
0.58
1.15
Rng anal
(R + SR)
\ 'A r-* " - '
s '' J
0.118
' - - ,"•-
- ^ V - ""
•.'">••'"
V ' "" ' '" ^ ""
0.118
0.118
V %%%
^s^, \*
%
\ "• ••'•'•- s
-. ^^ •.< ^ "
0.000
0.236
0.118
0.118
0.118
0.591
0.118
0.354
0.000
0.000
0.118
0.236
Normalized deviation
Average
'%S:5£4
"""v "''"'" % h "S"1* X"1
v \ •. X. s s j ssh v, ^
,f. , , s ^V»< --^
16.33
v v ^^>%N%ws ^ ^
^ /^-5^\- ; 4 if-
; " *. "" -."• """-i ^ •-
-.- \ '- **^*+-*
' x- ' ""- " \"S^S"
..••' \p %v •.'"'• ""
sX - -1" '"^ '--""-"c vi
^ s ^ °-.';''" V
14.67
16.67
vo X, "" •• ••-••-"•-x-'-'-x.^X
x s ^ .. _ " ^^ -. ^
! ^*'v-'\-^A- %vl-
-' ' '-"^' \\y'
\- " ' -% " ' °'-'U
^ ' ^ \ ;
V -- ,-. ^^ ^ ^ V\-**S
- :x "; V;^
- " - " "'-\ \,"
•"• """ ""^ 0 % "-.
•.-."••• '"> s ^ \
s v -.^ **" •• *v i-ft. •"
* '^ ^ s^^V^"
"•••\ ^
"" ' s ^ I.*"
- " "V - ^ "* ::\'-'-
14.00
, \ \ '; ^ -
15.00
1s " S4s
V.
19.67
^ ^ V V. n ^ ^^^v.^ ^
13.67
8.67
'•s "" \ ••
-
18.00
16.33
11.33
12.00
15.00
12.33
11.33
TAG SYMBOLS
Determined
to be an outlier •
(grand-avg) (known) Tag
|i|i£S
XX ^>'s T ^v^T^vj^v^
T"-. ' is ^ X> ^ '•. •*•-.,''
<.**• ^" ""-"-; ^/c^N\ "-
0.41
^x\t,^ ^^V^" \
C ^% lX^ ^^ *___;! ^^ vx'
•>*V N \* S ^;- svs %1- -
^ s "V^ s "-%^-" "\^
%v-\^ "" ,^ ^-\Xs^1
%'"•- ^ "" ^ / X \s C" \ \
V-" ' *JN s-^""^0-i\-sV*\
^O i ' -.•••• v •• v O* \ '*••
-0.17
0.52
-•••. __ s v^'-'-V- •> v •• •• * ,••
i: ^ '' "X-. *s ^^x"1 5 ^x.1" ""
"^«t%x '"4--*\-i'
/ ,o ---'^ h\s ":
'* ' r^v/xT,, ,s~~ v:-
^\ ^ * C O'"''^ ^^ ^
^v^V;4**^H:
^S?^^:'
%^o" * "" * s ^-x^"! V\ s\
"• O*S''X1's''!:!:%'11' '•'• ^ ^ ^ ••
\X" S N'\' "^ *SH V V^'^'3
v v^ C" "" - "" X""V
'£:t ' \i;H,-;-\.
"* " N^o^^ V ^\S •• ^•'•V'
« ^^x,--"1"' " """ ^ ->-•
-0.40
-\ - r > ^N'.C'\
-0.05
"' i,"-"* - -\XJ\ -
"'---' x--- \
1.56
•• ; * %s '*'''•
^ "-."• "• v •• ^
-0.51
-2.25
\S s \ ^ "" " "••'•' "
•• V ^ v v •• \
0.99
0.41
-1.32
-1.09
-0.05
-0.98
;-; •
-1.32
IT s Above
§ = Below
n-.v;'' ••J^ _NA< X \"" '"'•'• ^ h' •.
s''\ %s' •• ' s\v ^ ^ O^
"" - - ""*?">*»X
0.46
^rT^^'i^"
Vshs v "CrXV ^ ^
•^ •• •• "* ? - \ "" 1 •- ' 9 .. s
J--t % v V ^t" '"''t''"'-.
""•• v-^ *" ,W*
xxV^s ^\ " v _\ t
* "" "" ""*••
-0.12
0.58
s %•-•--% t *•., ••
"v- V " Mv.
•• > •• ^ "• -4 "" "'•'•••
,-lxx-- , /'*-'-
\~ ^r\! -'." -° ' '•
^ \v \ v x ^
/ :;%\;-*\^
' ' \"s< -.^C- r"
;; -^ ^ , ,, , * ,
\v"~ '•^X"X «v^ \ •• ,
XV -s"'- X^ X^ ^ * - vv s
*^v"^^^.
:''XV^V/-'~;V '
--V^^1- "• .t'-'-'-.v^
^ -"- k N*' *-
-0.35
"• * V "• •. ^ 0"^
0.00
- x ~! ' ' -:',**• ,
^ ^ ^ v ^
,\ ^ -• X "
1.62
-o *'-
-' - ' --: *, \'
-0.46
-2.19
" - C ', •" '
":.* s,x
-""' ">:" ;x'«.
1.04
•
, " ' • -
0.46
-1.27
-1.04
0.00
-0.92
*
-1.27
control limit
control limit
-------
11/27
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Strontium-90
Lab
SM
SS
T
TA
TD
" f > |> __ ••
TE, : -
If !
~. -
TP
' TQ - " '
TS
U
UB
VG
VL
VM
VN,;
VQ
VX
W
WA
WB
Y
Res. 1 Res. 2
,';*<' --X vr^ ;-">«--
16.0 16.0
13.0 14.0
18.0 13.0
, % ^ ' \%^ v.-i-'-''' ^"" '••'/'
'' - -*''»
* ' " :'' ^ "•. -,.*•'*•.
"" > "" ' ^ ''•'"''• ^1--
' •/ -. V> "" ' ' "• "" ' " V
;;23jO ,-/ ,{';\2&%
' •= ^ '* ""-.V. ••••r
13.0 12.0
-' ' -, '. C>::'
13.0 17.0
22.0 20.0
' -- ','"-'•- . ^ ~i
' ' •• %\V x -•• -vx'
- - ' -''-•' /'
14.0 16.0
V
16.0 16.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
-_:--;: •"•• •.,<. ,-_.'•
16.0 0.00 0.000
13.0 0.58 0.118
' \ • , " - '/j'- 0 ^ * -
15.0 2.52 0.591
,'••,. ^ -'• '• -•>'> v"2> ' s * "• V
\\%X , -"/ ,--* ; - -l
,-. '•• "• ••• "• ' \ ••
-- ' ^/s>P -v ^; l ,
sJ- ^ "-. r \ ' ""' > •• ' •-
"••i, ' ^ "•• / A\ ••' %v "• '•'"'• '' "f ""
'-'^-fi^'mO'f-'' -'/-L5S - 0.354
'-Vc , r, -;':" ',
11.0 1.00 0.236
,,' '''-' ' ' ''•- ';
15.0 2.00 0.473
22.0 1.15 0.236
- -' , "*-" -\ ' '
- -' ; '"- /-* ', ,<- " ,
•;> ••-,,', ^ ,- •"••• ^ •••• •• ••- ••
14.0 1.15 0.236
; •' • " ' "
16.0 0.00 0.000
Normalized deviation
Average (grand-avg) (known)
- - -'~,:- ;'v- >>"V* '•(: '^V'1 "-^'.
16.00 0.29 0.35
13.33 -0.63 -0.58
^ A" >, __-•£••• >• ?^ ^ «' ,^*\
15.33 0.06 0.12
v' ' s " ' *- <. '•'"• f "\-, s ,
" ' ••*'" "\1 ""' -S-''" "'"
••- - "•- . " ,," --,%/ ^- " » ^ „""">•,
, -. >r\ : '\ ^- ;^y^ ^"^ \
"A x -. '-'"'''' ~y*f ' ''' •••••. -.''' """
^ •• * * '1'-^\'.^ •. \ ,
•-"• 24i67 % 3 JO!'"/-1-' :; -3' .86 V
- > " .'''.,'!'^V«v, ^ --•;-, V,^L / '"-
12.00 ,-1-09 -1.04
-: ,,,,,': -~..!,,' . :'>;"v> " '"sX'v>j,^" ~-
15.00 -0.05 0.00
21.33 2.14 2.19
•• t h %'-. "* - *" '" ' v f '••••"
, _ /"--- ; 1- -^ /;- / \
''':-'"' '' ' ' •* X .-
*:, "",/,- - ~ . '
14.67 -0.17 -0.12
r '-''"'' - / ' -- "
V , .,. ,, ...''"•'.,.„. -' "' ' •' ,,v.
16.00 0.29 0.35
Tag
1 '-»"."
' ,*.-:"
* - f.
''• ' * s
,
0'
X '
-'* -
- »,.
- '] *',
•-•'. /
;-*;;s
-"" *
-,''*-
i '»....
Data sorted by Laboratory Average
Average
8.67
8.67
11.33
11.33
12.00
12.00
12.33
13.00
13.33
' 13.33
13.33
13.67
13.67
14.00
14.67
14.67
Tag
• = No data submitted
0 = Insufficient data
Lab
PV
BO
s
QL
U
QZ
RA
CO
T
FE
BG
PT
BH
N
W
KX
Average Tag
14.67
14.67
15.00
15.00
15.00
15.00
15.00
15.33
15.33
15.67
15.67
16.00
16.00
16.00
16.00
16.33
16.33
Lab
DT
CA
VG
R
NJ
EB
AA
TD
AK
EL
A
Y
SS
E
AY
QK
J
Average Tag
16.33
16.67
16.67
16.67
16.67
16.67
16.67
16.67
17.00
17.67
18.00
18.33
19.33
19.67
21.33
24.67 x
33.00 x
TAG SYMBOLS ft s Above control
x = Determined to be an outlier Ji s Below control
Lab
AE
L
DE
C
BL
AU
AL
AF
BA
CJ
Q
D
BC
PC
VL
TQ
HU
limit
limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 12/27
Strontium-90
% responding labs Frequency distribution
10
-6 -4 -2 6 +2 +4 +6
Normalized deviation of the mean from the known value
responding labs Frequency distribution
10
• • l-l
^^^^•^^^•^^^^^^•
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 13/27
Iodine-131 Statistical Summary 113 Participants
The known value of this nuclide is 75.0 pCi/1 with an expected precision of 8.0; the control limits
are 61.1 to 88.9; the warning regions are 61.1 to 65.7 and 84.3 to 88.9
27(23.9 %) Failed to respond .%
8(7.1 %) Outliers'
1 (0.9 %) Out of control •'
but not an outlier
Statistic
. 69(61.1 %) Within all limits
Respondents
"•• 8(7.1 %) 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
86.93
77.56
6016.27
89.23
15.91
0.15
75.67
0.89
0.01
Grand Avg 74.89
5.58
31.16
7.45
-0.14
-0.02
75.17
0.22
0.03
9(1O.5 %) More than 3 norm. S.D.
8(9.3 %) Between 2 and 3 norm. S.D.'
1(59.3 %) Within 1 norm. S.D.
of known value
18(20.9 %) Between 1 and 2 norm. S.D.
-------
14 /
,
27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Iodine-131
Lab
A
AA
AE
AF
AI
AJ
AK
rAL
AN
AP
AU
AY
BA
BC
BG
BH
BL
BM
BO
BW
C
CA
CJ
CO
CP
CQ
D
DD
DE
DL
DM
DT
DY
E
EA
EB
EH
EL
EX
FE
FL
GE
/HP
HU
HX
Res. 1
, 68.0
81.0
77.0
79.0
, ; --" 7r>'-
79.0
80.0
- ."47.0--V
70.0
, <• \ •'"'-
78.0
79.0
79.0
" '• ,70&:''''
' -. •. i
73.0
78.0
79.0
73.0
77.0
78.0
86.0
74.0
79.0
71.0
72.0
82.0
77.0
78.0
72.0
70.0
79.0
75.0
77.0
88.0
74.0
68.0
86.0
80.0
63.0
-*' < % \ ":"
Res. 2
71.0
83.0
66.0
77.0
',".. """AX ^ '
80.0
81.0
7::v42&'>
73.0
'••'<-? :-:;v
73.0
82.0
79.0
v'fl!UMK-
-•-•I--' '">' '--/>
72.0
79.0
85.0
77.0
- - * - ,"<* ' *" '
76.0
75.0
75.0
78.0
75.0
76.0
79.0
83.0
78.0
77.0
71.0
82.0
82.0
72.0
74.0
76.0
80.0
65.0
79.0
78.0
/ •- •<• /;
65.0
Res. 3
77.0
82.0
67.0
72.0
* - ' , "
76.0
88.0
?y ^27;0;)
69.0
,v -\h'A'% —
75.0
78.0
75.0
v>.;"™97.6\
"', " ' " ,**'
74.0
82.0
82.0
77.0
^ %
75.0
75.0
84.0
75.0
75.0
72.0
83.0
86.0
78.0
80.0
72.0
72.0
81.0
74.0
80.0
76.0
77.0
68.0
84.0
77.0
,', '-:- ' - '
60.0
^ < ' v j ' ' •• "
• 3 No data submitted
0 =
Insufficient
data
X 3
Exper.
Sigma
4.58
1.00
6.08
3.61
2.08
4.36
•* va&4i , -
2.08
,'-'/
2.52
2.08
2.31
20.03
1.00
2.08
3.00
2.31
1.00
1.73
5.86
2.08
2.31
2.65
5.57
2.08
0.58
1.53
0.58
6.43
1.53
1.53
3.00
6.93
3.00
1.73
3.61
1.53
2.52
Rnganal
(R + SR) Average
0.665
0.148
0.812
0.517
0.295
0.591
1.908
0.295
0.369
0.295
0.295
4.721
0.148
0.295
0.443
0.295
0.148
0.222
0.812
0.295
0.295
0.369
0.812
0.295
0.074
0.222
0.074
0.886
0.222
0.222
0.443
0.886
0.443
0.222
0.517
0.222
0.369
72.00
82.00
70.00
76.00
\ / -.
78.33
83.00
38,67
70.67
75.33
79.67
77.67
, 98,33
73.00
79.67
82.00
75.67
76.00
76.00
81.67
75.67
76.33
73.00
78.00
83.67
77.67
78.33
71.67
74.67
80.67
73.67
77.00
80.00
77.00
67.00
83.00
78.33
62.67
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
-0.63
1.54
-1.06
0.24
,; {, •-/ '^" , -'/•• \ >\
0.74
1.76
• rV>f Jiy; i;V-
-0.92
"- "'^' "-=' ; - " -\
0.10
1.03
0.60
; - -;' 5,0*7 ;/-^
.' ^?;^'':' '-•'.*
-0.41
1.03
1.54
0.17
, v^,, , ,,.,^ ^^
0.24
0.24
1.47
0.17
0.31
-0.41
0.67
1.90
0.60
0.74
-0.70
-0.05
1.25
-0.27
0.46
1.11
0.46
-1.71
1.76
0.74 ^_
-2.65
s , \ - / ' .,'•'"'
1T s Above
U 3 Below
-0.65
1.52
-1.08
0.22
--"sT '<"rW:
0.72
1.73
--&8T. """;;x:V-'
-0.94
v"-v"\;, ";;>;''
0.07
1.01
0.58
8:0^"- x-"v
\ "' ^ > '• • j
-0.43
1.01
1.52
0.14
;/, *':*/< -':»-•
0.22
0.22
1.44
0.14
0.29
-0.43
0.65
1.88
0.58
0.72
-0.72
-0.07
1.23
-0.29
' •
0.43
1.08
0.43
-1.73
*
1.73
°-72, „_„.
'- - ' i1, , - . •
-2.67
"""'->: •-; •"'/
control limit
control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 15/27
Iodine-131
Lab
I
1C
IU
J
' JB"-
JS
K
KL
KX
,h',..
'LA*
LE
LF
LM
LK
M
MA
ML
MP
MQ
"MV:
N
NH
NJ
O
PB
''"'PC1
PI
PM
¥Mfrs
.". IT.I-. '
PT
PV
PW
PY
Q
QB
QJ
QK
QL
QX
QZ
R
KA
RK
S
Res. 1
76.0
72.0
75.0
70.0
s % s *<•-;%-% _* ^ o
v , -x * •.""• "* ¥• "^"'••'.X'.j. ^
73.0
74.0
77.0
73.0
_70.0_
•* - "'j^C^
: •- -\^x
J75.0_
!• ,_ •> * "* v ""• •* ^ V-,.
"" L f '''t ^i.O ^ rt A >.
,^ s ^ v'X
67.0
77.0
75.0
63.0
74.0_
80.0
76.0
65.0
74.0
65.0
62.0
x ' y^*
,1 , V. > « - ''" *
,\; V -%s "~
72.0
62.0
67.0
, sv''x^vl
69.0
730.0
78.0
80.0
76.0
86.0
74.0
':"ry :;;l;r~
82.0
Res. 2
76.0
69.0
60.0
68.0
|;-T\!" "?°
71.0
71.0
74.0
77.0
_is70.0^
^ff%°
xV^VO^y^- ->
73.0
•*H];rvT^
kh4^;0;
71.0
78.0
77.0
62.0
66.0
77.0
74.0
70.0
75.0
64.0
"'£ mo
61.0
•f' ; • " >
\"' '" ' '* ;
73.0
62.0
61.0
tc ^">F"
71.0
639.0
78.0
^:r74.o
75.0
76.0
72.0
4.^^.;
^?5>f/'';-^
81.0
Res. 3
75.0
76.0
73.0
72.0
>~r>>i v"
70.0
72.0
74.0
75.0
_77.0 ^
"t^^X'-" '
\-,V;-r5";,~!'-- -,
^JO.O
• "-{; , "v \ \ - , -
%t, ^140.0*'
69.0
72.0
73.0
62.0
73.0
:V>T ;:y
81.0
80.0
73.0
74.0
62.0
:•;": 137.6 :"
64.0
^, "»;^ y *
> s , - \ , ,
~r" \ -v,' ^~\ -
72.0
70.0
69.0
*"^'F¥Vy ;
68.0
842.0
81.0
," . >' -
78.0
75.0
74.0
;;-\,^y ^"'"
74.0
• = No data submitted
0 s
Insufficient
data
x =
Exper.
Sigma
0.58
3.51
8.14
2.00
1.53
1.53
1.73
2.00
4.04
s ^ s* "" •- •- ^:;i-
s %" ^^ * "\,
2.52
3.79
2.00
3.21
2.00
0.58
4.36
2.08
3.06
4.04
0.58
1.53
10.02
1.53
0.58
4.62
4.16
1.53
101.68
1.73
1.53
6.08
1.15
- V - •
4.36
Rng anal
(R + SR)
0.074
0.517
1.205
0.295
0.222
0.222
0.222
0.295
0.517
'"1 v ^ •• ^ X
\, "
0.369
0.517
0.295
0.443
0.295
0.074
0.591
0.295
0.443
0.591
0.074
0.222
1.908
0.222
0.074
0.591
0.591
0.222
27.644
0.222
0.222
0.812
0.148
0.591
Average
75.67
72.33
69.33
70.00
.• °'V '' •' f
71.33
72.33
75.00
75.00
_72.33^
; t-^'y^^f
--?-\';"-;^^>S
, ' 72.67 _
'; ^"' ™- X
\-i44i6Tj;:
69.00
75.67
75.00
62.33
71.00
79.33
76.67
69.33
74.33
63.67
126:67-
62.33
"^r",V-;\A?v
sv -.-. X--^ '
72.33
64.67
65.67
;;"-"vV--^
69.33
737.00.
79.00
76.33
79.00
73.33
s" "" s "" "• o. \ Xs X*-- s ""
79*66
TAG SYMBOLS
Determined
to be an outlier
Normalized
(grand-avg)
0.17
-0.55
-1.20
-1.06
;^;;"? 70;"";
-0.77
-0.55
0.02
0.02
_f.:9:5l, ....
ffp^^y^
;r>,C%|- f" ';;-.,
^^j-q.48w_
., * *\ ° ^ S ^s" *"
A1 ",15.11/y
-1.28
0.17
0.02
-2.72
TO,«^I*
0.96
0.38
-1.20
-0.12
-2.43
.- i'i.izi -•."--
-2.72
yy^^uv/" -
" > ™ ' '-'-•. ;^,X- -
\V™'' • '*" *>•'"„ s
-0.55
-2.21
,.._;2-05L,
/"^-r^^"5-
-1.20
143.35
0.89
r ^Ty '
0.31
0.89
-0.34 _
, ,X™\^" N *>0^ *"•
0.89
deviation
(known) Tag
0.14
-0.58
-1.23
-1.08
*,","» ,*"\ OS." ^>V,^ / •
-0.79
-0.58
0.00
0.00
_-q.58
"' c:^\5v;"C'*' '
.;^V?°^^» '
-0.51
r^^vT*: V™
'"^ISjOS^^X:-;1
-1.30
0.14
0.00
-2.74
-0.87_
0.94
0.36
-1.23
-0.14
-2.45
il.ia >\ x
-2.74
\7^^:,V,»
s '• ^ ,\ %• \ \\ X % •> "" "" •>
^I-C-VX A^-^\-\ ;\
-------
16/27
EMSL-LV Performance
Evaluation:
Radionuclides in Milk, 30-Sep-1994
Iodine-131
Lab
SM
*•" z v '\., %
ss.
sv
T
'TA: '^
TD
TE
TI
TP'.'"
TQ
TS
U \-
UB
VG
VL
VM
VN
VQ
vx
w
WA
WB
Y
Average
38.67
43.33
62.33
62.33
62.67
63.67
64.67
65.67
67.00
69.00
69.33
69.33
69.33
69.33
70.00
70.00
70.67
71.00
71.33
Res. 1
76.0
96.0V
77.0
69.0
, " "" \?••*" ^
80.0
87.0
71.0
:**V'<;'?"
80.0
, "'>"; ,' , '
42.0
343.0
88.0
67.0
91.0
70.0
71.0
76.0
Data
Lab
AL
U
PI
MP
HU
PB
PV
PW
EX
M
WA
Q
NJ
IU
J
AE
AN
MQ
W
Exper.
Sigma
1.73
V:rv, -6,51^
3.51
4.04
^K"/"' '"'
4.00
1.53
3.06
'™v',^ '-'""*
6.43
•>*'
1.53
•>- •
0,00
2.31
6.56
0.00
2.31
2.08
0.58
Rng anal
(R + SR)
0.222
0.960
0.517
0.591
- - - • " -; ,
0.591
0.222
0.443
0.886
0.222
0.000
0.295
0.960
0.000
0.295
0.295
0.074
Normalized deviation
Average
77.00
,102,67
73.33
73.33
76.00
88.67
71.67
, '" "1 \"
•' \
68,06
2.55
-0.19
, _ \ '-
3.49
-0.77
-1.20
0.31
0.43
Ti$9l;\
-0.36
-0.36
T;T^
0.22
2.96
-0.72
x'v/':
-0.51
'">-' '
-6.86
'!
68.02
2.53
-0.22
" / ' ' ,^
3.46
-0.79
-1.23
0.29
Tag
'/•HPI
Ky^r,
;"'*";.
:'m~"
'•:*"
'• »
X
• ;•
.-**- ,
...........
' •' ' '
sorted by Laboratory Average
Average
• = No data submitted
0 = Insufficient data
X
71.33
71.67
71.67
72.00
72.33
72.33
72.33
72.33
72.67
72.67
73.00
73.00
73.33
73.33
73.33
73.67
74.00
74.33
74.67
Tag
Lab
JS
TI
DM
A
PT
L
K
1C
TQ
LF
CQ
BH
T
SV
R
E
VM
O
DT
Average Tag
TAG SYMBOLS
= Determined to be an outlier
75.00
75.00
75.00
75.33
75.67
75.67
75.67
75.67
76.00
76.00
76.00
76.00
76.33
76.33
76.33
76.67
77.00
77.00
77.00
It = Above
II = Below
control
control
Lab
ML
KX
KL
AU
MA
I
CO
BO
TD
CA
C
AF
Y
QX
CP
NH
SM
EL
EB
limit
limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 17/27
Iodine-131
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab | Average
Tag
Lab
77.67
77.67
78.00
78.33
78.33
78.33
79.00
79.00
79.00
DE
BA
D
GE
DL
AJ
S
QZ
QK
79.33
79.67
79.67
80.00
80.67
81.67
82.00
82.00
83.00
83.00
N
BL
AY
EH
DY
CJ
BM
AA
FL
AK
83.67
86.67
88.67
91.00
98.33
102.67
126.67
144.67
343.00
737.00
IT
X
X
X
X
X
X
DD
VL
TE
VX
BC
ss
PC
LR
VG
QJ
% responding labs
Frequency distribution
10
-6
-4
' -2 0 +2
Normalized deviation of the mean from the known value
+4
% responding labs
Frequency distribution
10-
-4 ' -2 0 +2 " +4
Normalized deviation of the mean from the grand average
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
tt = Above control limit
•II = Below control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 18/27
Ceaium-137 Statistical Summary 113 Participants
The known value of this nuclide is 59.0 pCi/I with an expected precision of 5.0; the control limits
are 50.3 to 67.7; the warning regions are 50.3 to 53.2 and 64.8 to 67.7
18(15.9 %) Failed to respond ... ^^^^^^^H ^-\ . 68(60.2 %) Within all limits
6(5.3 %) Outliers •
5(4.4 %) Out of control'
but not an outlier
Statistic
Respondents
16(14.2 %) 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
62.32
8.38
70.31
13.45
5.63
0.40
62.33
5.65
0.40
Grand Avg 62.39
3.72
13.84
5.96
5.74
0.91
62.33
5.65
0.90
11 (11.6 %) More than 3 norm. S.D.«%
16(16.8 %) Between 2 and 3 norm. S.D.
3O(31.6 %) Within 1 norm. S.D.
of known value
38(4O.O %) Between 1 and 2 norm. S.D.
-------
19 /
27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Cesium-137
Lab
A
AA
AE
AF
AI
AJ
AK
AL
AN
"AP/;
AU
AY
BA
BC
BG
BH
BL
BM
BO
BW
C
CA
CJ
CO
CP
CQ
D
DD
DE
DL
DM
DT
DY
E
EA
EB
EH
EL
EX
FE
FL
GE
HP
HU
HX
• =
0 =
Res. 1
59.0
67.0
61.0
60.0
70.0
60.0
68.0
55.0
57.0
1 ;—.
59.0
67.0
63.0
64.0
#>. "C"; -
62.0
63.0
65.0
62.0
65.0
61.0
62.0
73.0
67.0
60.0
67.0
61.0
66.0
67.0
60.0
63.0
62.0
65.0
61.0
64.0
59.0
64.0
60.0
65.0
65.0
58.0
74.0
48.6=
;•' ,' ,-'''- ''-V'-
Res. 2
62.0
60.0
66.0
64.0
62.0
63.0
68.0
50.0
58.0
"•'•\^ 't ••
No data submitted
Insufficient
data
. x =
Exper.
Sigma
3.51
3.51
2.52
4.00
4.93
2.08
0.00
6.56
0.58
•<*>. .',•*<'
2.08
5.03
1.00
4.93
"•' *'**'* -
1.00
1.00
1.73
1.00
2.31
1.00
0.58
4.62
3.79
1.00
2.00
4.73
0.00
0.58
1.00
0.58
2.00
1.15
0.58
0.58
1.00
0.58
1.53
3.06
1.00
1.00
0.00
,v>>63 '
i" "
Rug anal
(R + SR) Average
0.827
0.827
0.591
0.945
1.120
0.473
0.000
2.020
0.118
0.473
1.345
0.236
1.120
*" < l '
0.236
0.236
0.354
0.236
0.473
0.236
0.118
0.945
0.827
0.236
0.473
1.120
0.000
0.118
0.236
0.118
0.473
0.236
0.118
0.118
0.236
0.118
0.354
0.709
0.236
0.236
0.000
0.354
,,
62.33
63.33
63.33
64.00
64.33
62.33
68.00
56.00
57.67
* '• - •'"
60.67
62.33
62.00
60.67
*',->, ' • >' '• \
62.00
63.00
66.00
61.00
62.33
62.00
61.33
70.33
64.33
60.00
65.00
66.33
66.00
67.33
59.00
62.67
64.00
65.67
61.33
63.33
58.00
63.33
61.33
62.33
64.00
59.00
74.00
48.33
^ ,
TAG SYMBOLS
Determined
to be am
outlier
Normalized deviation
(grand-avg) (known) Tag
-0.02
0.33
0.33
0.56
0.67
-0.02
1.94
-2,21
-1.64
- " ^ ' ^
-0.60
-0.02
-0.13
-0.60
( V T'""X^:
-0.13
0.21
1.25
-0.48
-0.02
-0.13
-0.37
2.75
0.67
-0.83
0.90
1.37
1.25
1.71
-1.17
0.10
0.56
1.14
-0.37
0.33
-1.52
0.33
-0.37
-0.02
0.56
-1.17
4.02
;,% :*fc8£ J0 •-
i':.:i.^f:^
It s Above
§• = Below
1.15
1.50
1.50
1.73
1.85
1.15
3.12 It
-1.04
-0.46
1 ' : *
0.58
1.15
1.04
0.58
^T'v''*,» •"
1.04
1.39
2.42
0.69
1.15
1.04
0.81
3.93 It
1.85
0.35
2.08
2.54
2.42
2.89
0.00
1.27
1.73
2.31
0.81
*
1.50
-0.35
1.50
0.81
1.15
1.73
0.00
5.20 It
>3>70, ••' -x •,
''v-S','- ( -» "-
control limit
control limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 20/27
Cesium-137
Lab
I
1C
IU
J
JB
JS
K
KL
KX
L
-"at- •. •.
LA
LE
LF
LM
LR
M
MA
ML
MP
MQ
MV
N
NH
NJ
O
PB
PC
PI
PM
PP
PT
PV
PW
PY
Q
QB
QJ
QK
QL
QX
QZ
R
RA
RK
S
• =
0 =
Res. 1
65.0
69.0
65.0
62.0
56.0
72.0
67.0
61.0
58.0
..^__^
60.0
62.0
68.0
68.0
54.0
60.0
66.0
51.0
62.0
71.0
64.0
59.0
61.0
62.0
64.0
90;0^
77.0
, ^ ^. ,^
- % "" S1". ""**
56.0
52.0
67.0 ^
59.0
59.0
58.0
\v 62*0;
71.0
58.0
62.0
58.0
Res. 2
68.0
66.0
62.0
63.0
"V-rs "-
59.0
63.0
65.0
61.0
_58.0_ _
w. ^ __ S \"> ^ ^ \ s11 \
v. •• " V" - VX S -. -. ^
66.0
59.0
64.0
64.0
56.0
62.0
61.0
52.0
59.0
73.0
63.0
58.0
63.0
62.0
60.0
" '98.04-
V \ • "•
X v.> Y''X-' -,'
c^v''"'V.:v;
62.0
54.0
_,^63.0^
61.0
-
62.0
59.0
61.0
64.0
61.0
63.0
;4^v"
Res. 3
65.0
67.0
65.0
62.0
55.0
60.0
65.0
59.0
57.0
-, •?• ""• /s "
70.0
63.0
67.0
62.0
53.0
63.0
60.0
52.0
62.0
72.0
63.0
58.0
61.0
63.0
61.0
106,0
s ""j. "• w
59.0
55.0
68.0
63.0
64.0
57.0
69.0
70.0
63.0
59.0
No data submitted
Insufficient
data
X s
Exper.
Sigma
1.73
1.53
1.73
0.58
2.08
6.24
1.15
1.15
0.58
5.03
2.08
2.08
3.06
1.53
1.53
3.21
0.58
1.73
1.00
0.58
0.58
1.15
0.58
2.08
8.00
1.00
3.00
1.53
2.65
2.00
2.52
_ 1.00
3.61
6.24
0.58
1.53
1.00
Rnganal
(R + SR)
0.354
0.354
0.354
0.118
0.473
1.795
0.236
0.236
0.118
•>.,\ l •• •. *
1.345
0.473
0.473
0.709
0.354
0.354
0.709
0.118
0.354
0.236
0.118
0.118
0.236
0.118
0.473
2.695
0.236
0.709
0.354
0.591
v . > •- - --\ •• ,. t
0.473
0.591
0.236
0.827
1.795
0.118
0.364
0.236
Average
66.00
67.33
64.00
62.33
56.67
65.00
65.67
60.33
57.67 __
,, »^,_^.,™.^
65.33
61.33
66.33
64.67
54.33
61.67
62.33
51.67
61.00
72.00
63.33
58.33
61.67
62.33
61.67
9&00
S -. s ' ,
\-;- ^-«V
59.00
53.67
66.00
S ^w v , s v-.™t -. v
61.00
61.67
58.00
68.00
63.00
62.67
58.00
TAG SYMBOLS
Determined
to be an outlier
Normalized
(grand-avg)
1.25
1.71
0.56
-0.02
-1.98
0.90
1.14
-0.71
-1.64
^TT;r^r~;
1.02
-0.37
1.37
0.79
-2.79
-0.25
-0.02
-3.71
-0.48
3.33
0.33
-1.41
-0.25
-0.02
-0.25
^12*34
*\ -A -"•-'' \- I%1
':^^\,"^-"V
-1.17
-3.02
1.25
-•^:;\\;J- ;h° ''
-0.48
V
-0.25
-1.52
, ,
1.94
0.21
0.10
^;Y-A*0? '
-1.52
deviation
(known) Tag
2.42
2.89
1.73
1.15
-0.81
2.08
2.31
0.46
-0.46
;;;r"""" \fV
2.19
0.81
2.54
1.96
-1.62
0.92
1.15
-2.54
0.69
4.50 11
1.50
-0.23
0.92
1.15
0.92
^eSlSv
\y C;>;:v;%€
11 _ \ s' . % •• v
0.00
-1.85
2.42
0.69
: - . •
0.92
-0.35
0
3.12 IT
1.39
1.27
:-%;3i\;"x;
" "'; ;- :," - , <'•
-0.35
tl = Above control limit
II = .Below control limit
-------
21 / 27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Cesium-137
Lab Res. 1
SM 63.0
SV 63.0
T 59.0
TA .
TD 62.0
TE 63.0
TI 65.0
TP /'">Y~/.
TQ 57.0
U 58.0
J i1 •» ,.
^^JQ> '
VG 57.0
VL 63.0
VM 61.0
VN , 9,0
-VQ'." ';"• '
VX 68.0
W 55.0
WA 54.0
-WB -V> -,
Y 64.0
Average
11.00
43.67
48.33
51.67
53.67
54.33
54.67
56.00
56.67
57.67
57.67
58.00
58.00
58.00
58.33
58.33
58.67
58.67
59.00
Res. 2
65.0
64.0
59.0
66.0
64.0
64.0
61.0
61.0
60.0
63.0
69.0
- - : ILQ
,,-• ; --V
68.0
64.0
53.0
-,• 'v\-\-'>V -\
60.0
Tag
X
X
X
• s No data submitted
0 s Insufficient data
Exper. Rng anal Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
65.0 1.15 0.236 64.33 0.67 1.85
K,V';8
7.0- ,\\,.2,89- ---0;591 , :: ^SSiBT^r 7?~9;iO^<.<^'l]0i28;V..;:XA'
60.0 2.08 0.473 62.33 -0.02 1.15
57.0 1.15 0.236 58.33 -1.41 -0.23
64.0 2.00 0.473 64.00 0.56 1.73
65.0 1.00 0.236 64.00 0.56 1.73
61.0 2.08 0.473 63.33 0.33 1.50
58.0 2.08 0.473 58.67 „ :,1,:29 -0.12
60.0 1.53 0.354 59.67 -0.94 0.23
59.0 1.53 0.354 58.67 -1.29 -0.12
62.0 0.58 0.118 62.67 0.10 1.27
66.0 4.04 0.945 65.33 1.02 2.19
- 13.0;: 2.00 0.473 11,OX>:) /;>ll80f; >46J3V X
•<;tv:".V •• * :.',-••<••'. •'••'- . ' - ^'.•"'"•*'-'';i-'v**^i:<^:?..:.4
64.0 2.31 0.473 66.67 1.48 2.66
66.0 5.86 1.570 61.67 -0.25 0.92
57.0 2.08 0.473 54.67 -2.68 -1.50
:> .-•'••.. -/''•' ' • • • :. • "•".:, X>V^''V-Y:«V
63.0 2.08 0.473 62.33 -0.02 1.15
Data sorted by Laboratory Average
Lab
VN
RA
HU
MP
PV
M
WA
AL
JS
L
AN
S
QK
EH
T
NH
VG
TQ
PT
Average Tag Lab Average Tag Lab
59.00 GE 62.00 C
59.00 DL 62.00 BH
59.67 U 62.00 BA
60.00 CP 62.33 Y
60.33 KX 62.33 SV
60.67 BC 62.33 O
60.67 AU 62.33 ML
61.00 Q 62.33 J
61.00 MQ 62.33 FE
61.00 BO 62.33 BW
61.33 LF 62.33 AY
61.33 EX 62.33 AJ
61.33 E 62.33 A
61.33 CA 62.67 VL
61.67 W 62.67 R
61.67 QJ 62.67 DM
61.67 PB 63.00 QZ
61.67 NJ 63.00 BL
61.67 MA 63.33 TI
TAG SYMBOLS IT = Above control limit
x = Determined to be an outlier 4 = Below control limit
-------
EMSLrLV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 22
Cesium- 137
Data sorted by Laboratory Average
Average Tag Lab Average Tag Lab Average
63.33 N 64.33 CO 66.33
63.33 EL 64.33 AI 66.33
63.33 EB 64.67 LR 66.67
63.33 AE 65.00 K 67.33
63.33 AA 65.00 CQ 67.33
64.00 TE 65.33 VM 68.00
64.00 TD 65.33 LE 68.00
64.00 IU 65.67 KL 70.33
64.00 FL 65.67 DY 72.00
64.00 DT 66.00 PW 74.00
64.00 AF 66.00 I 78.00
64.33 SM 66.00 DD 88.67
66.00 BM 98.00
Tag
tr
tr
ft
tr
tr
X
X
X
727
Lab
LM
D
VX
1C
DE
QX
AK
CJ
MV
HP
PI
ss
PC
% responding labs Frequency distribution
" " " " : . . .. _. iii-.iilLlii.li. .
-6 -4 -2 0 +2
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
10 _T •
•II .| .
-a . ______ l.l-»lll»ll-lll •• - -
-6 -4 -2 0 +2
Normalized deviation of the mean from the grand average
• e No data submitted TAG SYMBOLS fl ^
10 = Insufficient data x = Determined to be an outlier ^ 5
I
I
5 Above control
s Below control
"l
+6
m
+6
limit
limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 23/27
Total Potassium Statistical Summary 113 Participants
The known value of this nuclide is 1715.0 mg/1 with an expected precision of 86.0; the control limits
are 1565.8 to 1864.2; the warning regions are 1565.8 to 1615.4 and 1814.6 to 1864.2
36(31.9 %) Failed to respond .
3(2.7 %) Outliers •*
12(10.6 %) Out of control -'
but not an outlier
Statistic
. 52(46.0 %) Within all limits
Respondents
10(8.8 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
1708.20 Grand Avg 1700.90
146.79 109.00
21546.07 11881.62
8.59 6.41
-0.40 -0.82
-0.05 -0.13
1702.67 1697.50
-0.72 -1.02
-0.08 -0.16
15(19.5 %) More than 3 norm. S.D.«,
1O(13.O %) Between 2 and 3 norm. S.D.
30(39.0 %) Within 1 norm. S.D.
of Known value
• 22(28.6 %) Between 1 and 2 norm. S.D.
-------
24/27 EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994
Total Potassium
Lab
A
"AA!
' AfcV
AF
AI
AJ
AK
AL
AN
AP
AU
AY
BA
.. , ••
•~BC,:
tBG'
BH
BL
BM
BO
"BW-
c
CA
CJ
CO
CP
CQ
D
DD
DE
DL
DM
DT
DY
E
EA
EB
EH
EL
EX
FE
FL
mj
isi\
Res. 1
1638.0
' "* 'krtfiirt /"i "*•"•
•. . ,^Si/Ovr*\^ "" s
1698.0
1729.0
1583.0
1710.0
1760.0
1700.0
1724.0
, ,, ^.V ..^ „ .- A
' - -" * V ' '
s s , ••''
1720.0
1776.0
1800.0
1661.0
1644.0
1730.0
1910.0
1664.0
••••
1528.0
1766.0
1480.0
1530.0
1630.0
1733.0
1701.0
1741.0
1730.0
1731.0
1610.0
\ 1266.0 1
^\,,v-'r*Vi
Res. 2
1513.0
^^ll
1682.0
\» '<-> '. *;>
1702.0
1593.0
1640.0
1720.0
1600.0
1770.0
,v .• * -V f ,-. > * :
''• '.' ' '", ' "\
' -,- v"; '* -, '".
1750.0
1701.0
1790.0
1699.0
1673.0
1770.0
1610.0
1691.0
1730.0
1721.0
1530.0
1540.0
1630.0
1719.0
1759.0
1851.0
1670.0
1767.0
1610.0
V- ""
'•:#&/$
?''^4^';^
Res. 3
1644.0
2160.6
1633.0
\ * V'
1747.0
1564.0
1670.0
1730.0
1590.0
1712.0
' •• -,' ^< t '' v ;
;^ . , '-, ',
<•
1750.0
1662.0
1850.0
1780.0
1734.0
1810.0
1700.0
1701.0
,,,
1717.0
1698.0
1580.0
1550.0
1700.0
1723.0
1759.0
1808.0
1670.0
1759.0
, .
1620.0
•ii85;o'
*"?r'''. V ;'
• = No data submitted
0 a
Insufficient
data
X =
Exper.
Sigma
73.96
:,.;73.53,;y:
33.87
22.65
14.73
35.12
20.82
60.83
30.62
% ' •• -. "•••
/ ^ 4 , •
- y ;
17.32
57.94
32.15
60.78
45.94
40.00
153.95
19.14
113.06
34.59
50.00
10.00
,
40.41
7.21
33.49
55.43
34.64
18.90
5.77
-; -
: \40.50
Rng anal
(R + SR) Average
0.900
1.018
0.446
0.309
0.199
0.481
0.275
0.756
0.398
* ' ^ ^
1598.33
, "2152*33
1671.00
1726.00
1580.00
1673.33
1736.67
1630.00
1735.33
- ' * > .> /'
Normalized deviation
(grand-avg) (known) Tag
;2.07__
;J'^P€p
:0.60
- -, % -v' !-~ -" "'-,'
0.51
-2.43
-0.56
0.72
-1.43
0.69
•--"^^ ' \ «. • s - w ,_
-2.35
ISPS
-0.89
.,} \;7Vy~'*X,
0.22
-2.72
-0.84
0.44
-1.71
0.41
fff. -.v.-. : ,-.-. •*,::•.:* ;. •. s
"-. " \ * "" -''''•,<*•.' ^ ^ >• ' 1^ "' "s\^ '* ' ' X','
;;-^'-;'X'-'; -'**'•'*
control limit
control limit
-------
^ • ' • • **-v
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 25/27
Total Potassium
Lab
I
1C
IU
J
JR
JS
K
KL
KX
L
LA
LE
LF
LM
LR
M
MA
ML
MQ
MV
N
NH
NJ
O
PB
PC
PI
PM
PP
PT
PV
PW
py*
Q
QB
QJ
QK
QL
QX
QZ
R
RA
RK
S
Res. 1
1725.0
1890.0
1713.0
1724.0
1700.0
1754.0
1629.0
1664.0
1590.0
1863.0
1800.0
1646.0
1649.0
1680.0
1874.0
1480.0
1664.0
1984.0
1873.0
1722.0
1650.0
1640.0
1573.0
•v\ ,-"'
\ s v v ""
1423.0
1590.0
1925.0
c\\t
1685.0
,
1668.0
1683.0
1662.0
1708.0
"" \ " • , -\ w--^
"v" - '"-^iC "•"-
1687.0 "
Res. 2
1800.0
1866.0
1801.0
_ 1677.0
1691.0
1577.0
1675.0
1711.0
1640.0
1892.0
1700.0
1668.0
1799.0
1680.0
1874.0
1510.0
1783.0
1983.0
1841.0
1870.0
1650.0
1640.0
1594.0
'•v"\':< v >
.-.\-v* h *-:
\~ ."v/
1655.0
1600.0
1659.0
?- '-^- - ':*'
1678.0
1694.0
1694.0
1674.0
,-• v ,,•>..
1740.0
V/^-\4->%,-.
;'4^V*?X\
1687.0
Res. 3
1906.0
1878.0
1720.0
1714.0
1638.0
1542.0
1649.0
1652.0
1680.0
1933.0
1900.0
1614.0
1700.0
1630.0
1811.0
1560.0
1661.0
1992.0
1865.0
1731.0
1768.0
1640.0
1604.0
^ •- •• -%i;*\
•* :\,> ' ;
1655.0
1600.0
1864.0
1583.0
- , ^-t*fi •'=•
1714.0
1700.0
1774.0
„ v" , \s_
1730.0
. - - -' -^ '
-:-:"':--5'' -\
1690.0
• = No data submitted
0 =
Insufficient
data
x =
Exper.
Sigma
90.94
12.00
48.91
24.76
-.\ " "^ ..
33.50
113.65
23.07
31.18
45.09
35.17
100.00
27.15
76.27
28.87
36.37
40.41
69.59
4.93
16.65
82.97
68.13
0.00
15.82
133.95
5.77
139.34
56.98
I;.: '"• ' • V ::";
23.07
8.62
61.49
16.37
1.73
Rnganal
(R + SR)
1.463
0.165
0.604
0.323
1 ' , .<• '*-" '
0.426
1.869
0.316
0.405
0.618
, ,t ^, ,
0.481
1.712
0.371
1.058
0.343
0.433
0.549
0.838
0.062
0.220
1.031
0.810
0.000
0.213
2.130
0.069
2.575
0.701
' :"::'.:- .'•"-'. --V:
0.316
0.117
0.769
0.220
, .
0.021
Average
1810.33
1878.00
1744.67
1705.00
' ''V:rv'
1676.33
1624.33
1651.00
1675.67
1636.67
1896.00
1800.00
1642.67
1716.00
1663.33
1853.00
1516.67
1702.67
1986.33
1859.67
1774.33
1689.33
1640.00
1590.33
--r"\,* / ^
1577.67
1596.67
1816.00
1648.67
1692.00
1692.33
1703.33
,"!_•„ •• s * * "" „""
1726.00
\ , "C" '"''*' w v
1688.00
TAG SYMBOLS
Determined
to be an outlier
Normalized deviation
(grand- avg) (known) Tag
2.20
3.57
0.88
0.08
-0.49
-1.54
-1.00
-0.51
_^:14?1
3.93
2.00
-1.17
0.30
-0.76
3.06
-3.71
0.04
5.75
3.20
1.48
-0.23
-1.23
-2.23
,-\ '"'\ .'"- ,' , 1~V, * ^ '
v>%^k\:\VV.i-o:
-™>-v -~4\-,\\: -^
-2.48
-2.10
2.32
'\;'^\Vy'! ;\;-
-1.05
,
-0.18
-0.17
0.05
V^V*C;^',>';V'
^0.51 _ s ^
-vX,,^v- ;>"V".;
,/i •?£ :^if> •' '
-0.26
ft = Above
!)• s Below
1.92
3.28 ft
0.60
-0.20^ ^
-0.78
-1.83
-1.29
-0.79
-1.58
3.65 ft
1.71
-1.46
0.02
-1.04
2.78
-3.99 U
-0.25
5.46 ft
2.91
1.19
-0.52
-1.51
^-2.51
:J- "':•> \*V"
<%i\^V -;•''••:
y ;-";;/"-' , ^
-2.77
-2.38
2.03
,J> . '••'•;
-1.34
*
•
-0.46
-0.46
-0.23
"""* \\. "'/•',.
0.22
\.'V ^*
"j^t-! •
-0.54
control limit
control limit
-------
26 / 27 EMSL-LV Performance Evaluation:
Radionuclides in Milk, 30-Sep-1994
Total Potassium
Lab Res. 1
>-8M" - .-"'• v '
SS 1846.0
SV 1437.0
T 1620.0
•;TA-* 'V-'^v
TD 1619.0
TE 1769.0
TI 1774.0
*jfp-' '*-v\ ;;;,',
TQ 1562.0
U 1552.0
trs » ;— *
VG 1640.0
VL 1499.0
VM 1773.0
VN 2382*6
VQ
VX 1863.0
W 1370.0
WA 2014.0
WB
Y 1810.0
Res. 2
5^ <^ <:•"">•!> '•••'• -- v
'A?'" , x ^'-'^ A;-v
1924.0
1474.0
1700.0
, s ' ^ '•'•'''•. ^ "" '
1629.0
1770.0
1759.0
.. ^0 X ^ <\
1564.0
: „*' . ' ^ -:'
1760.0
1473.0
1742.0
; 22110
1839.0
1430.0
2037.0
1660.0
Res. 3
Ascs>V v:- *
1863.0
1632.0
1570.0
f 1 ,' ,.. ^ .,
1604.0
1782.0
1764.0
Exper.
Sigma
j .' '_,
41.02
103.57
65.57
, " -
12.58
7.23
7.64
Rnganal
(R + SR)
0.536
1.646
0.893
-\ "' . ''
0.172
0.089
0.103
Normalized deviation
Average (grand-avg) (known)
, • , •'.' -' '•'"• >'*'
1877.67
1514.33
1630.00
•'' -'"" .~%" ;,
1617.33
1773.67
1765.67
• :^^;?'^.
3.56
-3.76
-1.43
'•'-' *• v'; ~'"'"f
-1.68
1.47
1.30
^" V>^'--'-'UV- ',;./ ">-:-! ''- , "^ ;' -;'-'- " VrlcU;i^-;>i;35'',;-
1729.0
1552.0
" ' , : " •.->/_
1730.0
1534.0
1787.0
2264.0
1816.0
1340.0
2043.0
1760.0
83.50
•N v
6.93
62.45
30.61
23.03
85.01
23.50
45.83
15.31
76.38
1.280
0.082
0.824
0.419
0.309
1.254
0.323
0.618
0.199
1.058
1645.67
1556.00
, '""" V ' . "
1710.00
1502.00
1767.33
2287,67
1839.33
1380.00
2031.33
" V '
1743.33
-1.11
-2.92
\ v^ ^ "r-v
0.18
-4.01
1.34
ii,82^' ;>"
2.79
-6.46
6.66
'-'• '' "> :~-~: ,
0.85
->6?^
3.28
-4.04
-1.71
v?;-\\'
-1.97
1.18
1.02
tly V " '' \ '•'
-1.40
-3.20
rvT'.
-0.10
-4.29
1.05
11.53'
2.50
-6.75
6.37
0.57
Tag
•W,.-
' IT
H
,'^v:
{^•':'\
li
"*»y '
li
"',"-' ''"
-,'-'*.
J|
tr
';'*
Data sorted by Laboratory Average
Average
1225.33
1380.00
1502.00
1514.33
1516.67
1530.00
1540.00
1556.00
1577.67
1580.00
1590.33
1596.67
1598.33
1613.33
1617.33
1624.33
1630.00
1630.00
1636.67
Tag
X
U
li
U
U
!!• '
U
li
Lab
HU
W
VL
SV
ML
DD
DE
U
PT
AK
PB
PV
A
FE
TD
K
T
AU
L
Average
1640.
1642.
1645.
1648.
1651.
1653.
1658.
1663.
1671.
1673.
1675.
1676.
1683
00
67
67
67
00
33
33
33
00
33
67
33
67
Tag
1685.33
1688.00
1689.33
1690.00
1692.00
1692.33
• = No data submitted
0 s Insufficient data
Lab
O
LM
TQ
Q
KL
DM
CQ
M
AF
AL
KX
JS
C
CO
S
NJ
EH
QK
QL
Average
1702.67
1703.33
1705.00
1710.00
1713.00
1713.33
1716.00
1725.00
1726.00
1726.00
1728.33
1735.33
1736.67
1739.67
1740.00
1740.00
1743.33
1744.67
1752.33
TAG SYMBOLS
x s Determined to be an outlier
Tag
Tt s Above
D- s Below
control
control
Lab
MQ
QX
J
VG
BL
BO
LR
DT
R
AJ
D
BA
AN
DY
CJ
BH
Y
IU
EL
limit
limit
-------
EMSL-LV Performance Evaluation: Radionuclides in Milk, 30-Sep-1994 27/27
Total Potassium
Average
Tag
Data sorted by Laboratory Average
Lab Average Tag Lab Average
Tag
Lab
1765.67
1767.33
1770.00
1773.67
1774.33
1800.00
TI
VM
CA
TE
NH
LF
1800.00
1810.33
1813.33
1816.00
1839.33
1853.00
1859.67
E
I
BM
PW
VX
MA
N
1877.67
1878.00
1896.00
1986.33
2031.33
2152.33
2287.67
ft
ft
ft
ft
ft
SS
1C
LE
MV
WA
AA
VN
% responding labs
Frequency distribution
-T— . •_• TmiTlLlifii.Ti Vf —T»".'
-4 -2 0 +2
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
101
i-Y-'aalf ••ltmllT 'I' T»- -T-
-2 0 ^
-6
-4 -2 +2 +4
Normalized deviation of the mean from the grand average
+6
• s No data submitted
0s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
U = Below control limit
------- |