|
|
T
80
DIS/MIN/1000 STANDARD CU FT
C33?
60
|
—
gro
40
X
‘
N\
20
/
i
-—
SA
i
i
i|
50k
60k
|
7Ok
ALTITUDE, FT
~
—
|
g0k
90k
100k
DIS/MIN/4000 STANDARD CU FT
Fig, 7a—Variation of Sr’ and Cs" activity with altitude.
40 -
65k
30 Lee
-
20 --
BOk
40 F-
90K |
0
50°N
boo
40°
30°
20°
4goe
or
40°
50k
207)
LATITUDE
Fig. 7>— Variation of sr? activity with latitude,
37
30°S