From these picts it is obvious that activity is proportional
to the amount of rainfall within each area.
Correlation coefficients
for all graphs are summarized in Table h.
Table 4. Correlation coefficients for the Regression of Sr*~
of rainfall.
Fraction of total
Sempling Area
Time of Sampling
90
on inches
May
June
July
March thru
July
0057
0686
0651
Oolk7
0.60
O-L6
O-45
0663
0637
Ooli2
Ooli3
0.95
0087
0690
0.66
0.37
0072
March
April
Total Sampling Area
0077
Above 0° Latitude
Below 40° Latitude
Northeast
0077
Nerthwest
0.78
Southeast
Oot?
Southwest
0.87
The next step in the analysis of the rain water data is made
by comparing gr?° in rain to that measured by various pot type collectors.
However, most of these devices collect total fallout and have sampling
networks that do net coincide with the rain water stations.
Therefore,
a comparison of these results can only indicate the relative levels of
rainocut to tetal fallout,
This comparison is shown in Table 5 in which
the average values of fallout in rain water are obtained by considering
10 rainfall sampling stations nearest New Haven, Pittsburgh, and New
Yorks
<= PO
=
ee ORO ees