09
T
T
T
500 Lo
T
T
T
T
T
Tt
T
STRONTIUM-90 CONCENTRATIONS
~
30° N-90°N
70000 Fr.
QQ
0
;
200 =
O
Sr
100 L
N-D
|
|[U-F
Ley
yg
J-A
1958
(957
Fig,
0
S-O
0
Oo
S
®
6
-
A
e
M-A M-J
e
®
A
A
A
;
4
e
o
e
A
a
A
e
O
O
®
Oo
é
e
«
e
A
Oo
Oo
@
90
(dpm/tOOO SCF)
300
G6O0000F|
O
O
400 Lo
65,000 Fr.
e
|
N-D|
|
J-F
l
M-A
M-J
l
J-A S-O
Nl
|
N-D|J-F
1959
4 -- Strontium-90 concentrations (in dpm /1000 scf) at 60, 000,
65,000, and 70,000 feet versus time for latitude band
90°N-30°N,
M-A
\
i960
MJ