0.50 Prirrrrrprprpr? bt rr bbb tb bbtei — 90Sr URINE ACTIVITY EXCRETION RATE, Bq d7! ~ 0.45 x RONGELAP ADULT MALE EXCRETION RATE ® 4 | /\ iP pee POPULATION EXCRETION RATE — 0.40 4 0.35 030 = 0.25 f | 0.20 0.15 0.10 0.05 O RONGELAP ADULT FEMALE EXCRETION RATE »Qy _ 4 | Pet 1600 3200 4600 6400 8000 DAYS POST RETURN TO RONGELAP Fig. 5 Mean Adult 905, Urine Activity Excretion Rate at Rongelap Atoll 9600 11200