TABLE 1 STRONTIUM90 IN NEW YORK CITY FALLOUT (Monthly Pot Collections ) Collection Period from to mo Sr90/mi 2 Cumilative sr89 mo S8r90/mi? ° gr70 Precipitation (inches) == _— 59 227 2 0.75 -o 0.0 1.20 eS2 ne 4052 2 0675 27 1.23 4 0.07 441.75 2 0675 13 34 2 eee 2.6, 2 0.75 18 April 1.52 2 0.4202) 417 2 0086 may ra : Oe 6.80 2 0.86 x 3.25 J et 2 ores M85 20086 =D 2055 July 1.58 2 0.299) 50.13 20.91 282 564) 3.68 August 0.60 20.0542) 50.73 2 0.91 38 ¢ 789) 2.36 September 0.65 I 0.1162) 51.38 * 0.92 28 4 1(2) October 1.06 2 .0633(2) 52h 20.97 12-31-57 2-1-5, an 1998 January February March ° ~ 0.94 84 + 0. 2 0.06 16 «010.5 2 6(2) 3.79(6) 2.98(6) 3.19(6) 6,4,(6) 53 ¢ 15(2) December * At midpoint of collection period. 3 The mean end standard error of four analyses. 2) See Footnote 1. Only two of four samples were analyzed for sr89, Therefore this term represents an average ratio and standard deviation of two Sr89/8r90 ratios. (3) The mean and standard error of three analyses. | (4) Represents an average ratio and standard deviation of three sr°9/gr90 ratios. (5) Represents an average ratio and standard deviation of four gr89/gr70 ratios. (6) Replaces values previously reported in HASL-5l. -~-