TABLE 1 STRONTIUM 90 IN NEW YORK CITY FALLOUT (Monthly Pot Collections } Collection Period from to me Sr79/ni 2—1-54 12-31-57 1998 J anuary February March re April May Cumulative me Sr90/mi= $799 Sr70 Precipitation (inches) ~-- 3927 4 0675 -- -- 1.20 0.0 57 ## OL0e 0.52 2 0675 21 17 4.458 1623 + 0.07 41.75 2 0675 13 509 0.94 > + 0-6 O-3 2 oor he .64, = 1.52 2 0.4262) 4.17 2 0086 2.70 % 0.07: 2057 2 0.06 June 1.84 + 0.06 July August 1.67 2 0.05 0075 46.80 2 0.86 16 18 810.52 6(2) 4.96 6,20 11 10 11 1.58 2 0.2963) 48.55 2 0666 50.13 2 0091 12 328 2 564) 060 40.0542) 50.73 20.91 38 # 769) September October November December At midpoint of collection period. The mean and standard error of four analyses. See Footnote 1. Only two of four samples were analyzed for sr&9, Therefore this term represents an average ratio and standard deviation of two Sr89/sr90 ratios. The mean and standard error of three analyses. Represents an average ratio and standard deviation of three sr99/gr90 ratiose Represents an average ratio and standard deviation of four gr89/sr70 ratiose -i-