For the stake locations previously discussed, there were no changes in the radiological conditions at
these sites between the two sets of measurements, so far as is known. Individual stake locations
have been remeasured on 20 or more oceasions because (1} fine grid data were required where
previously a coarse grid had been measured, or (2) the validity of a measurement was doubted.
These "reproducibility
tests"
were
not
formally
analyzed;
however,
in
many
cases
repeat
measurements were within 10 percent of the first measurement and in most cases within 15
percent. Should a more exact value be desired for the overall reproducibility of IMP measurements,
a formal study of these repeats is reeommended.
TABLE B-21-3. IMP REPRODUCIBILITY STUDY
Island: PEARL
Stake
July 1978 Detector 496
3-N-2
17.3
16.2
1.07
1-BL-0
14.6
12.2
1,20
9-S-3
21.9
18.4
1.19
6.9
7.0
0.99
3-BL-0
March 1979 Detector 396
Mean
Ratio
Ll] + 0.10
Island: LUCY
Stake
March 1978 Detector 496
March 1979 Detector 396
Ratio
10-W-8
2.3
2.9
10-W-6
12.9
12.1
1,06
10-W-4
21.1
19.8
1.07
10-W-2
21.5
21.0
1,02
10-BL-0
19.7
22.5
0.88
0.8
0.97 + 0.12
Both Combined Mean
103 + 0.13
~7
Mean
B-21-5