MC/KM? 0° tft } 30° LATITUDE [| [| SOUTH J 60” 90° Fig. 5a— Total deposition of Sr*® in 1956 at various latitudes. re ee puc/LITER O }— 90° PoP PY SSeSTonrass | oO x — SNOW Pi | | YT 60° NORTH 4 ft 30° 0 30° ff SOUTH 60° LATITUDE Fig. 5b-— Mean Sr®® content of rain water at various latitudes (1955-1957). 240 90°