Figure 11 shows the individual data calculated for 137¢, for all Ronge/ a, The individual maximum 137¢, daily residents and is referenced to June 1, 1957. accivity ingestion rate was approximately 4 times the population mean value. The standard deviation observed for the adult activity ingestion cate distribution was 41% of the mean value, 39% of the mean value for young adults, 48% for adolescents, 38% for children, and 54% ‘forinfants. Adolascenta and infants exnibited a broader distribution than adilfs, while'children showed ¢ fractioual variation in activity ingestion rate similar to that of aqults,, Breast feeding versus coconut ssp supplements would have contributed to the greater variation observed in infants. Adoleacents and young adults were the population subgroups which have been observed to move frequently between atolls. This wobility 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 patterns however, a distinct difference be~ tween males and females was indicated. This difference arose from the use of vaiues for Ke listed in Table 3 which were derived from urine data for male aii ferale 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 race for males to rise and decline more rapidly chan for females. Figures 13a and 13b summarize the individual data for 906, for all Rongelap residents and were referenced to June 1, 1957. A bimodal shape was observed for the distributions which contained both sexes, again reflecting (hie Data from urine bioassay indicated that the observed difference between the male and female values for \ was not significance. A t-test was performed for consecutive urine measurement The results indicate that because te data during the 23 year residence interval. denen Scantces Solace+ ahaa: difference in the 906, dietary rate constants. 28 IER Tepe ee os RPO: FERN Gt Bete Mage