WORLDWIDE FALLOUT 77 



60 — 

 50 — 

 40 

 30 

 20 — 

 10 

 



Guayaquil (0 



J L 



1 — \ 1 \ \ [ 



New York (40^N) —I 60 



1 \ — \ \ \ r- 



Lima (10°S) 



— I — r 



Antarctica (70°S) _ 



1 — \ — \ — \ — I r 



Point Arenas 



1965 1966 1967 1968 1969 1970 1971 1972 1973 

 YEAR 



50 S) _ 



1965 1966 1967 1968 1969 1970 1971 1972 1973 

 YEAR 



Fig. 12 SNAP-9A Pu tropospheric air concentration. 



