_ ACTIVITY (C/M) Funnel Sample Funnel Sample CloudSampie Oceon Water Funnel Sample Funnel Sample Crater Sample 3 5 6 I I 7 8 19 100 TIME AFTER SHOT (HR) Figure 3.223 Decay of funnel, cloud, ocean-water, and crater samples determined by End-Window Gamma Counter 2, Shot Umbrella. 329 600