64 



300 



280 



260 



240 



220 



200 



180 



160 



140 



120 



20 



— I 1 r- 



KILOCURIES 



1 r 



II 



375 



J 



Y 



JAN 1958 1960 



1962 



/ 



I i i 1 \ i \ — 



MONTHLY ^r DEPOSITION 

 IN NORTHERN HEMISPHERE 

 (TRANSPOSED FROM LOG PLOT 

 OF FIG. I.PAGE 1-97 HASL No243 

 BY H.L.VOLCHOKand M T 

 KLEINMAN.) 



INTERPOLATION OF fig.2 



Tse 46^^ W B. SILKER lAEA/SM 



_L 



1964 

 YEAR 



1966 



Vs ^° '' 



1968 



1970 



Figure 1 



