62
RADIATION STANDARDS,
INCLUDING FALLOUT
SR-90 INVENTORY
May 1961
MEGACURIES
N. Hemisphere Stratosphere
0.45
S$. Hemisphere Stratosphere
0.52
World Troposphere
0.03
Total Atmosphere
1.00
Deposited on Ground
42
Total
5.2
FIGURE 1,
SR-90 INVENTORY
Megacuries
May 1960 Nov. 1960 May 1961
Observed world wide
distribution
Available for world
wide deposition*
5.3
5.3
5.2
9.9
9.4
9.3
"Based on 9.2 less 3.0 (?)
megacuries of focal fallout
and radioactive decay
FIGURE 2.
or
a
Protea arate
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