798
ROSER AND CULLEN
1.6
1.4
SURFACE -AIR CONCENTRATION, PC/M?
1.2
1.0
0.8
0.6
0.4
“L_oLe
TH
0.2
a
JFMAMJJASOND JFMAMJJASOND JFMAMJIJASOND JFMAMJJASOND
1956
1957
(a)
1958
1959
1.0
0.8
=
“
0.4
je
—
0.2
bee
0.6
—
Dorrit
Cee
JFMAMJJASOND JFMAMJJASONDJFMAMISJASOND JFMAMJJASOND
1960
196]
(b)
1962
1963
Fig. 3—-Surface-air concentration at Rio de Janeiro based on Staplexfilter data, 1956-1963,
BETA TTT TTT TT TTT TTT TTT PTTTT TTT TTT TTT TTT TT]
1.6-
— 0,40
woah
2
GO 1.2
— 0.35
wv
oO
.
= 10
é
‘=
+ 0.30 O
a
~
© NRL FILTER DATA
J 0.25 5
ao COLUMN DATA
a
< 0.8-Z
5 0.6
0
0.20
=
7815 g
of
VY O.4b—
— 0.10
0.2 F-
— 0.05
0
it Noes let eb
Jan.— Dec.
Jan.— Dec.
1960
1961
Jan.— Dec.
1962
9
Jan.— Dec.
1963
Fig. 4—A comparison of filter and column measurements at Rio de
Janeiro, 1960—1963.