176
DREVINSKY AND PECCI
30
TT
TTT TTT
rT
TTT
ALTITUDE, KM
25 |=
TTT
TTT
\
4
20 F
=
bE
4
Mar. 16, 1962
10
5
0
107!
30
<
A >0.15 p RADIUS
X 0.02 TO 0.15 p RADIUS
@ <0.02 p RADIUS
Ly
f py yyy]
10°
«T1117
Ly}
aan
_
puyyyyl
10!
Mice/MSe ACTIVITY RATIO
TTT T1177]
X———p
25 |
,
|
jf gygyy
10°
[TTT TTT
__|
-——X—+4
_
ALTITUDE, KM
20 t15
10 F-
—
Sept. 25, 1962
A >0.15 p RADIUS
X 0.02 TO 0.15 p RADIUS
@ <0.02 p RADIUS
=
—
_
5
0
107!
tt
ttyl
10°
Lt
LE
pail
10!
Mice/%Sr ACTIVITY RATIO
Lot
ot
et
10°
Fig. 6—'!#Ce/*Sy activity ratios for impactor—filter collections over
Minneapolis, Minn. (45°N 93°W), on Mar. 16 and Sept. 25, 1962.