NEW YORK —— Sr#9 mMC/SQ KM Co PITTSBURGH — | oO — / 2r- ! I ! t | ! — f SNOW set 90° tL | 60° tt 30? NORTH O° | 30° LATITUDE 60° 30° SOUTH Fig. 10— Total deposition of Sr™ in 1956 at various latitudes. 6 F— _ts Sr89 IN RAIN, wyc/LITER 5 re —1 4 ALR —-— 4 S RAIN WATER ——=, — 13 3 en 2 —! 4 fe | 1954 a 4955 Fig. 11—Correlation between Sr® concentrations in rain water and in the lower stratosphere. 321 5 Sr29 IN STRATOSPHERIC AIR (RELATIVE SCALE) 7