69
|
y.
|
|
500 L
|
T
,
q
‘
|
|
an
|
T
I
STRONTIUM-90 CONCENTRATIONS
7
60°S-30° S
A
e
sr?° (dpm/1000 SCF)
400 ~
o
70900 Ft.
65,000 Ff.
60,000 Ff. 7
_
300 L
A
200
e
A
100 Lo
c
8
@
f
®
A
e
e
7
o
=
-
N-0
1957
|
JU-F
a
M-A M-J
J-A S-O
1958
L
N-D/
|
u-F
{4
M-A Mey
J-A
|
S-O
tf
N-D|U-F
I959
Fig, 6 -- Strontium-90 concentrations (in dpm/1000 scf) at 60, 000,
65,000, and 70, 000 feet versus time for latitude band
30°S-60°S
|
M-A M-J
1960