Fig. 4 a 3 2 o o x <a | 3 &y x 5 5 i WORLD WIDE FALLOUT 5$r9° SPRING 1955 LATITUDINAL DISTRIBUTION OF FOREIGN POST CASTLE $e99 FALLOUT (Soil Assays) © FEBRUARY 1955 DATA @ JANUARY 1956 DATA . 0 al 2 E 3 soo z 4 - & 2 ° z i $r?° FALLOUT (me/mi?) i 1.8 MEGATONS 2.2 MEGATONS (1.1 me/mi2) FEB. 1955 yocoyeny 0.4 MEGATONS bt! (0,2 me/mi?) LATITUDE