correlation cosfficient obtained, using the gummed film data (7), s os This relae dicted Sr 90 , 90 , and rain water data as measured Sr* pre- . is 0.49. tionship is shown in figure 5, using the month of May as an illustration. The ratios of average sr7° in rain to average sr?° in gummed film, range from 1.9 te 45. Table 6. Table 6 is a summary of this comparison. Comparison of sr?° in gummed film to sr7° in rain water. Sampling Month Average sr70 in rain water Average sp70 in gummed film March 1.2 Oot 207 0.2 April lol 0057 1.9 0.29 May 1.6 Ooi) 11 O19 June 1.0 02022 Ls 0.02 July 1.5 0.063 aly 0.01 (me/mi@/mo ) (me/ni=/mo ) Ratio Correlation Coefficient CONCLUSIONS The relationship between fallout in rainfall with total fallout measurements using the pot type of collector is good, but there is poor agreement between the rain water data and gummed film measurements. It is believed that the sr? values calculated from gummed film activity are low due to incorrect arbitrary burst assignments used in the caloulations. (©) Considering only the rainfall data, no overall correlation exists between rainfall and the level of sr?° activity. It is interesting that although the testing of atomic weapons takes place in southern letitude:, tne sr70 deposition is higher at northern latitudes. If the fallc.t was a - we . ~ sare & se a “ - = . % & oo’. sy ~SNS ws ‘i Pe BCS Tg n . was Be. “oy * =, = “ve “ey+ = cae r ~ ™ tt ! Se a, s “NAN SERRR SE Baeey LTTNS ERPE Seae Se & I TS LT ae : ~ALE Sang. ; = . “ “3 s ° ee oe, . “a mm ‘ ~ Pao whe a — Dat% . “AN wl sy =a, : Se . Ting es, =“, ~ - mera va AERAoe AORN