' TABLE Comparison of sr70 Values Measured in Pot Samples Collected In New York City With Those Computed From Total B Aetivity in The Same Pot Samples Data Given in me/mi2 Month Fed 1955 1956 Comp, 1957 Comp, _Meas, Comp, Meas, 1 - ~ 0.23 0.04 0,27 222 0.27 2 - - -0,87 0.27 1,07 204 0.52 Meas, - 2.43 2.01 1.78 1.71 1.50 0.81 1958 Comp. Meas, Comp . - 1.28 1.41 0.37 1.23 99 1,04 0.68 0.89 2.58 1.88 4.81 1,38 1.52 4.50 0.83 1,10 0.93 1,12 2.63 1.84 3 0.59 4 0.88 0.26 1.24 i 5 0.38 0.05 0.94 : 6 0.48 0,03 0.82 © 0.74 0,63 0.13 0.82 0.94 1,75 72 7 0.15 0,05 0.38 0.12 0,72 0.22 0,84 2.26 1.58 1.11 g 0.26 0.07 0.70 0.33 0.53 0,58 0.50 2.83 0.60 35 9 1,40 0.56 | 0.51 0.16 0.32 0.73 0.41 2.65 0,65 ~P4 10 0.27 0.15 0.47 0.31 0.54 0.26 0.38 0.51 1,06 2.67 11 0,81 0.70 0.35 0.26 0.51 0.47 0.42 0,01 0.98 98 12 0.33 0.21 0,55 0,14 0.55 0.64 0,60 0.92 1.77 1.91 Meas/comp. Ratio E 4 1954 Meas, 2.38 - 1.34 0.96 0.82 0.81