100,000 ACTIVITY (C/M/49 ML) o 8 Let 10,000 % a %. % % 4 9 © 2 DW 4 3 8 70 80 SO i050 110 i260 i530 40 iD 160 170 BO 180 200 2:10 220 230 240 250 260 270 280 290 300 TIME (HR) Fig. 5.6 Decay Curve of Na24 Sample from Shot 3. Sample was Collected at Coca Head 6 Nautical Miles from Ground Zero on Bearing 7°T