C,
Table C.3.
SUMMARY OF EXPERIMENTAL DATA
Replicate measurements
were reduced to a weighted mean by con-
Measurements of radionuclides in
ventional averaging techniques,
Where
each sample resulted in activity concen-
more than one upper limit was set for
tration values which were entered on
any nuclide, the lowest limit is listed.
IBM cards, one nuclide per card and
All samples were assigned an identifi-
sample, along with sample identification,
cation number which identifies the sample
spectrum and detector designation, time
uniquely and includes digits designating
of measurement, and replicate number,
the type of sample and the location where
The data on a given card were designated
the sample was collected,
as being in one of three categories, "first
this identification number and for desig~
wild guess,’ preliminary, or final.
nating sample type and location is listed
As
the measurements were made, data
cards were prepared and submitted toa
Format for
in Table C,1,
In Table C,3 the data are ordered ini-
CDC-7600 computer program which
tially according to sample type as listed
ordered the data and printed a summary.
in Table C,2 (sample type is designated
During the analytical measurement
by the first two digits of the sample iden-
phase of this survey, the data summary
tification number),
Within a given sam-~
was updated on a regular weekly basis;
ple category, e.g. soils, the data are
copies of the summary were provided to
listed according to island designator,
the scientists for evaluation of the data.
beginning with Alice and proceeding clock-
At the end of each week, all new data
wise around the atoll (the island designa-
cards were sorted and merged into the
tion is given by the last two digits of the
master data file in a CDC-7600.
sample identification number),
Use of
This
an IBM photostore device for massive
island sequence is given in the last part
data storage enabled us to avoid the hand-
of Table C,1,
ling problems usually encountered in con-
Soil data from a single island are
tinuous updating and storage of data on
ordered in the following way:
magnetic tape,
1, Biota soil samples —these samples
All replicate information
was presented in the weekly data reports.
were taken from locations which relate
Only the highest category of data was
directly to certain vegetation samples,
listed for any given nuclide,
For exam-
2. Soil survey samples —these samples
ple, if ''final'’ data were available, no
are numbered sequentially for each
"first wild guess" or "preliminary’ data
were listed; if preliminary" data were
available, no "first wild guess'' were
on maps (Section B, ''f'' series), keyed
listed.
number,
For inclusion in this final report, the
data bank was processed so as to provide
island.
Sample locations are shown
according to the sequential location
Both surface samples and
profile sets are included.
3. TLD soil samples —samples taken for
one best set of concentration values for
gamma spectrum measurements which
nuclides measured in each sample.
are of use in understanding results of
These data are listed on microfiche in
TLD measurements,