4
oO
m= ft
x
w
~
So
A
+
CO
al
=
E
a\2
pore
y ONT
<
|
aT
a
Oo
T
Ol]
4
Oo
1
&
Rh’? CONCENTRATIONS ABOVE
19.5 km DURING FIRST HALF
OF 1959
4
Oo
709
© |-59
x 3-59
A 4-59
O 5-59
+ 6-59
!
60
50
1
40
SOUTH
L
30
l
20
i
lO
L
OQ
E
i
iO
,
20
4
30
40
NORTH
Ld
50
Fig, 3 -- Concentration as a function of latitude during first half of
1959
%2
60
70