5 a eo " SURFACE AIR S:?° CONTENTS SUMMER AND FALL 1957 AND SPRING 1958 4 EQUIVALENT FALLOUT RATES _ (At rates of 3.8 me/mi 2/ye/dpm/SCM or 3 day meen residence in lower 10,000 feet) me/mt2 3 CHACALTAYA, BOLIVIA SANTIAGO, CHILE ANTOFAGASTA, CHILE | 3 : 28 9° 00’ N 4° 37’ N 12° 06’ $ 53° 15'S 0° 08° S 18° 26° N 14° 49° N - 2.2 0.7 - 0.7 33° 27° $ 23° 37’ $ MIRAFLORES, C.Z. BOGOTA, COLUMBIA LIMA, PERU PUNTA ARENAS, CHILE QUITO, ECUADOR SAN JUAN, P.R. SUBIC BAY, P.}. —_ 17° 10° § 2.3 1.7 0.3 2.9 1.8 3 s aA 2 , CHACALTAYA SANTIAGO ANTOFAGASTA + at MIRAFLORES BOGOTA : LIMA. oo PUNTA AREAS Quito SUBIC BAY 0 ¥ i mM } 3s FIGURE 4. | 3 A 1957 $ O09 N D JS { F | WM | A ! { MS 1958 re oe

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