:
‘SE BRP BER H USB B Bee eee se
Summary of
Pot Data
The Interpretation of faliout deta has always
been complicated by the
products
Introduction of fresh fission
Into the atmosphere.
This has prevented clean-cut
separation of debris from individual
tests or even series
of tests.
Three major test serfes have been reported for
1958, the U.S.S.Rk. serles
U.S. series
date
in the summer.
In Table 3,
station
figure
in fhe spring and fall and the
As @ typical example of the
the complete results for the HASL pot
In New York City are plotted
in Fig. 6.
This
indicates an tacreased rate of fallout during 1958
compared to previous years.
The high variability of all fallout sempling ard
analysis
requires smoothing by grouping of data.
As an
example of the patterns produced by such smoothing, Fig. 7?
summarizes the Stronttbum=-90 pot deta for 1958 grouped by
quarter of the year and by 20° latitude bands,
The four
quarters consistently show a maximum in the 30=50°N band
and e minimum In the equatorlal regton.
that the numbers of stations
8, and 6,
reliable
in the five bands are
Therefore, the equatorial
than
maximum Is
the other
In the
four
It should be noted
bands,
10+30°S band rather
!1, 9, 2,
region may be
The southern
less
hemisphere
than the most