Table 3 (Continued) Collection period Jan, 1957 Feb. 1957 Mar. 1957 Apr, 1957 Sr™/sq mile, mc 1.01 +0.02 0.17 +0.05 0.38 1.98 + 0.03 + 0.02 Cumulative Sr”/sq mile, me 2.02 + 0.05 2.19 +0.05 2.57 + 0.06 4.55 +0.06 May 1957 0.720 + 0.031 June 1957 0.271 + 0.038 5.541 + 0.079 July 1957 Aug. 1957 1.072 0.457 0.260 0.206 0.122 0.007 0.012 0,018 6.613 + 0.145 7.070 + 0.145 0.193 + 0.012 0.170 + 0.018 7.729 + 0.148 7,899 + 0.150 Sept. 1957 Oct. 1957 Nov. 1957 Dec, 1957 + + + + 5.270 + 0.068 7.330 + 0.145 7.536 + 0.148 Precipitation, in. 3.94 3.28 1.40 11.27 6.44 10.18 28.67 11.35 14.74 2.11 Hiroshima, Japan Aug. 1956 Sept. 1956 Oct. 1956 Nov. 1956 Dec. 1956 Jan. 1957 Feb. 1957 Mar. 1957 Apr. 1957 May 1957 June 1957 July 1957 Aug. 1957 Sept. 1957 Oct. 1957 Nov. 1957 Dec, 1957 0.50 +0,.03 0.50 +0,03 0.27 0.11 0.06 +0.03 +0.02 +0.02 0.77 0.88 0.94 + 0.04 + 0.05 + 0.05 0.29 0.53 0.23 1.12 0.567 0.493 40.01 40.01 +0.01 + 0.01 + 0.077 + 0,036 1.23 1.76 1.99 3.11 3.677 4.170 +0.05 + 0,05 40.05 + 0.06 + 0.094 + 0.110 2.26 1.29 11.00 6.44 10.22 4.987 + 0.111 21.10 0.009 §.034 + 0.112 0,015 5.311 + 0.113 at the collecting station 0.012 5.446 + 0.114 0.022 5.804 40.115 4.48 10.92 2.07 Lost 0.817 + 0.017 0.047 + 0.277 + Lost 0.135 + 0.358 + 11.93 9.83 3.51 1.64 0.23 2.15 Rio de Janeiro, Brazil Sept. 1956 Oct. 1956 Nov. 1956 0.12 + 0.02 0.21 + 0.06 Dec. 1956 Jan, 1957 Feb. 1957 0.02 +0.02 0.04 +0.0] 0.06 0.05 +0.01 +0.01 0.12 0.33 0.39 0.41 0.45 0.50 + 0.02 + 0.06 + 0.06 + 0.07 +0.07 +0.07 Bogota, Columbia Aug. 1957 Sept. 1957 Oct. 1957 Nov. 1957 Dec, 1957 0.018 + 0.006 0.017 + 0.008 In process Sample not received In process 20 0.018 + 0.006 0.035 + 0.010 1.95 3.12 3.51 3.51 2.73 5.07