Tadle 2. Population sreakdown by age and geographical living patterns. Infants and small children ” Children and adolescents Men Women a-4 5-19 20+ 20+ 16 4] 22 21 50 30 30 30 1s 19 5 10 Elsewhere in village 3 1¢ 5 10 E2acn 5 5 5 S Interior of island 5 15 20 1S Age rricket (years) , Fraction of population (°° Fractizn of time spent in reitsctive areas (4%): Inside home ‘ witnin 10 m of home LiLiton Tiner islands 2 1 shown 2S area 3 in Fig. -. anc o are identical, 0 10 10 § 20 20 25 2s A: far as the external dose assessment is concerned, cases $S Since the expected living patterns are most likely to differ bei.een the various age gri.ts, it is necessary to utilize tre age distribution data 0 prescntac in Table 2.) Thess cata were obtained from the 1974 census taken on Kili Island towne “34 persons who cla:m land rights on Bikini atol.* The geographical living patterns, aisz shown in Table 2, -ere sssumed to be similar to those expected for the returning feacees . 1 Eneweliy people. ja Even though the gacra-rav exposure rates vary widely, it was necessary, for the turrise ef the external ccse calculations, to derive the most reasonable values of the mean exposure tates for es:! ssecific geographical area under consideration. enivr in Vable 3. These are The 7... cxzosure rates for specific areas on Bikini Island were eptainec by weighting the mean exposure rates within each contour interval with the area ‘sutnir the contour. Since the exposure rates on Eneu Islanc are relatively uniform, the Tea: ¢xTcsure rates were chosen by inspection of Fig. 3. Since this survey did not include tie .i7er islands of the atcil, it was necessary to rely on data from previous surveys to zo the total population 5 6 ° Linch et al., purtese. -. +. ~.° .2 sti were collects: : Seemed ee Lee Their results the values presented in z @ It should be ro:ntec cut that these ere rough estimates since the data are cr a span of alrost ten years. The exposure rate over the i$ estimated tr te 3.3 cn hr due to the cosmic ray contritution and an additional 9052160