Table 4 (Continued) Cumulative Sr® /sq mile, mc Collection period 11/26 —-12/ (26-127) 12/1-12/4 0.024 +90.003 12 5.1 #917 0.129 +0.007 23.44 0.17 #04 0.025 +0.002 249 49 #917 22:30 ¥9.17 23.54 +0.17 0.042 +0.003 59 2399 0. *0-17 0.035 +0004 . 7392 . *917 yg gay 0.115 +0006 . ~/* . #917 0.077 +0.004 . 23-82 . +0.17 0.014 23.83 +0.17 0.135 + 0.012 0.029 + 0,002 2 — 12/13-12/16 0.042 + 0.005 0038 + 0.003 12/26 — 12/2 9 / 6.4 +0.5 29 0.007 + 0,002 0008 +0004 / 4.5 29 g9-— 12/9-12/13 12/21—-12/26 15 0.034 +0005 0.058 + 0.003 12/ 12/19-12/21 11.9 +1.8 0. #917 12/8—12/9 ‘A sr¥8/gr%* . 23 f 12/18 -—12/19 sr®™ /liter, dis/min 0.019 +0.009 12/4—12/8 12/16 —-12/18 Sr™ /sq mile, mc 0.049 + 0.003 0.029 + 90.003 0.131 +9.010 0.073 + 0.004 0.012 + 0.003 + 0.004 7 0. . 95 +1.0 14 6.3 + 0.6 11 4.3 +0.2 22 92 +0.6 18 4.3 +0.4 19 10.7 + 0.8 2.45 + 0.20 5.4 12 12 3.8 64 95 + 1.0 28 36 20 Precipitation, in. 3.1 16 6.7 90 2.85 + 0.20 Ba! gp} 0,04 33 32 9.8 6.8 . 0.15 3.5 +0.2 19 3.7 . 1.22 2.35 + 0.15 16 4.1 +0.3 17 2.27 + 0.15 Cumulative Sr**/sq mile, mc 6/10—6/24 6/24-7/8 0.367 + 0.012 0.291 + 0.015 4,504 + 0.063 4.795 + 0.065 8/5—8/19 0.235 + 0.012 6.550 + 0.102 17 52 11 5,995 + 0.096 6.315 + 0.102 Sr” /liter, dis/min 35 61 +2 +3 18.3 + 1.0 4,.2+0.5 5.6 0.2 3.0 L8 0.016 + 0.002 6.758 + 0.110 7,446 + 0,110 3.4 + 0.2 =0.0025t 0.70* 8.146 + 0.110 5.8 + 3.0 10/28-—11/11 11/11-11/25 11/25-12/9 12/9-12/23 12/23—1/6/58 0.047 + 0.003 0.144 + 0.009 0.56* 8.193 + 0.110 8.337 + 0.110 8.897 + 0.110 5.62 3.95 1.15 0.53 9/30-—10/15 0.69% 1.94 1.63 12.5 + 0.6 7.5+0.5 6.680 + 0.102 6.734 + 0.103 10/15—10/28 in. 2.60 0.130 + 0.007 0.054 + 0.004 Sample lost Precipitation, 5.8 + 0.3 8/19-9/3 9/3-9/16 9/16-9/30 9.5 + 0.6 20.2 + 1.2 * Calculated from measured specific activity and total volume of sample collected. + Winds upset collector Nov. 8, 1957; sample consists of residue only in distilled water. 28 . 0.61 21 Sr®9/sq mile, mc 1.20 +0.07 0.320 + 0.036 . 9.5 36 Table 5—RAINFALL SAMPLE ANALYSES, CHICAGO, ILL. 7/8—7/22 7 /22—8/5 . 1.11 0-11 *Sr® value extrapolated to end of sampling period. 1957 . 0.26 5.2 * Ba™® value extrapolated to end of sampling period. Collection Period 0.13 . 1.30 Trace