TABLE 2 STRONTIUM-89 CONCENTRATIONS AND CONTRIBUTION OF FRESH STRONTIUM-90 FROM ATMOSPHERIC TESTS Theore tical ¢ 111 Measured 1.6 74 49 ND 0.8 30 60 90 lll 74 39 2.9 1.7 0.3 60 91 66.16,1964) Dec. Jan.1965 ND 16 + 3 nese 2 yy 14,1965) t June 1965 July August 57.9 + 2.7 28.2 + 2.6 2.4 + 1.1 1.5 41.2 120 nese #3 June 1966 13.1 + 2.8 37 100 1.8 4.3 + 0.8 1.8 + 0.7 108 139 38 25 1.7 0.9 18.7 + 1.7 19 129 86 5.3 19 AY 81 112 142 173 129 86 55 36 24 16 7.0 5.3 9.9 8.5 4.5 2.0 : y 9, 1966) lese #4 Sept. July August Sept. Nov. 1966 1627, 1966) Dec. ese #5 Jan. 1967 +» 27,1966) Feb. larch April May June 10.4 + 1.7 6.5 + 0.8 11.9 15.5 27.4 34.7 14.0 5.3 + + + + + + 1.2 1.1 1.6 1.6 1.8 0.9 67 49 33 67 0.4 2.2 8.5 ese #6 No evidence of 89Sr in August or September 1967. 217,1967) July sample lost and September through December sampling or analytical ambiguities occurred. ise #7 24,1967) b Jan. 1968 Feb, March April May June e #8 Feb. 1969 28, 1968) counting error, ot determined. 6.5 + 0.6 18.3 14.8 13.1 3.1 + + t+ + 1.1 1.1 1.1 0.7 22 53 81 111 141 2.9 + 0.7 172 2.3 + 0.5 48 124 81 55 36 24 5.8 7.2 5.1 3.4 1.3 16 0.9 87 2.2 90g. From Test (° 1.5 1.6 NOW OH 30 Ratio 90 Sr to 12) me DPR hy 10 + 3” Sr to £ lo ke Jnese #1 Test (days) 39 Om in lo © Nov. 1964 Year Time Elapsed Since ho oN 8°5, Concentration (£C1/m3) nan Sample Collected Month and .* t ad ee 18 23 19 13