‘')
ri
rrPrrp?rrrrerrrrrrttrtirsepertirtesefiteteeétit#
\
100
Ratio at t=O
SS
x\
E
Zr95/cs'3" ACTIVITY RATIO
\
10
o
High Altitude Shot
+
Pre-Hardtock
i
=
r
:
NN
Lo
oO
3S
2
c
2
Lo
@
C
®
oO
<q
+
—
-
<=
@
~~
C
C
—
.
°
“)
rT
|
-
eo
Hardtack
~
7
J
-
2
-
oO
7
X
o
&
Oo
.
-
C
7
X
Pre-1958
L
-
-
x
-
0.0!
Soviet October
}
C
-
0.1
==
x
>
eH
Series
Litistjftftt?tt
tt
Ei tt i t ttt tt
|
MAMJJASONDJFMAMJJASONOJFMAMJ J
1958
Fig. 7 -- The Zr ics!
1959
37
1960
activity ratio of Soviet October,
high altitude, and pre-Hardtack radioactivity
123