. me st . & 7 woot . Low . - ‘ . . “ 1 Figure 11 shows the individual data calculated for 137¢, for all Ronge | ap The individual maximum “~ residents and is referenced to June 1, 1957. 137 Cs daily activity ingestion rate was approximately 4 times the population mean value. The standard deviation observed for the adult activity ingestion rate distribution was 41% of the mean value, 39% of the mean value for young adults, 48% for adolescents, 38% for children, and 54% forinfants. Adol¢ecents and infants exhibited a broader distribution than adits;‘wpilechildren showed a fractional variation in ‘activity ingestion rate similar to that of aqultsy. Breast feeding versus coconut sap supplements would have contributed to che greater variation observed in infants. Adolescents and young adults were rhe population subgrouy:s which have been observed to move frequently between atojle. This mobility would lerd to greater variations in the daily. activity ingestion rates relative to those observed in the more stationary population subgroups. , Figure 12 also exhibited g wave pattern; however, a distinct difference he- tween males and females was indicated. This difference arose from the use of vaiues for Re listed in Table 3 which were derived from urine data for male and fezale residents at Rongelap Atoll. Its major impact was on the dose equivalent rate, not on the total dose equivalent; and its effect was to cause the dose equivalent rate for males to rise and decline more rapidly than for females. Figures 13a and 13b summarize the individual data for 906, for all was not significant. A t-test was performed for consecutive urine measurement data during the 23 year residence interval. The results indicate that becauye 28 UT Te eee e 4p *. hey at. mt ELE te Bre reeiee Aub wwe coe + * *. ae oT Te:ohm ver Att,har. arte! Les indicated that the observed difference between the male and female values for Ve * ‘ples -fpoetay moot on “ ht NE Magee oo thr a RARE PPoa Data from urine bioassay ‘ difference in the 706, dietary rate constants. e observed for the distributions which contained both sexes, again reflecting (he - <A bimodal shape was . * wr, 4 aa ropet ht AoTt wee = eg 2 rectByes the“ s Teer Rongelap residents and were referenced to June 1, 1957.