TABLE B-20-1: RANGES OF STANDARD DEVIATION ESTIMATES
Ranges
Source
of Values
Location
Propagated error on TRU, pCi/g
Janet
0.6
-
51.6
Propagated error on TRU, percent
Janet
27
-
398
Counting error-IMP 241m, pCi/g
Janet
0.1
-
4.6
Standard deviation of TRU/Am ratio*
Northern Islands
0.12
-
2.72
Computed brush correction factor
Pearl
105
-
1.42
IMP 2414m-reproducibility study,
Pearl
7.6
-
9.0
Standard deviation of detector
Lojwa
0.07
-
0.58
Standard deviations of kriging
error, pCi/g
Northern Islands
0.6
-
Counting error-lab gamma data, pCi/g
Janet
0.17
-
1.66
Counting error-lab alpha
Spectroscopy data, pCi/g
Janet
0.19
-
6.39
pCi/g
effective area measurements, em2
*Due to a programming error the standard deviations reported here are overestimated.
B-20-18
16.2