Figuce ll compiles the individual data calculated for Rongelap residents and is referenced to June 1, 1957. 137 ; Lo, . . . 137cs for all The individual maximum . . 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 544 for infants. Adolescents and infants exhibited a broader distribution than adults, while children showed a fractional variation in activity ingestion rate similar to that of adults. Breast feeding versus coconut sap supplements would have contributed to the greater variation observed in infants. Adolescents and young adults were the population subgroups which have been observed to move frequently between atolls. This mobility would lead to greater variations in the daily activity ingestion rates relative to those observed in the more stationary population subgroups. Figure 12 also exhibited a wave pattern; however, a distinct difference between males and females was indicated. This difference arose from the use of di- etary rate constants listed in Table 3 which were derived from urine data for male and female 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 risg and decline more rapidly than for « = ae females. Figures 13a and 13b summarize the individual data for 90, for all Rongelap residents and were referenced to June 1, 1957. A bimodal shape was observed for the distributions which contained both sexes, difference in the 705, dietary rate constants. indicated thus reflecting the Data from urine b+eeeecay analysis that the observed difference between the male and female values was not significant. for KE A t-test was peformed between consecutive urine measure23