- a }— — RELATIVE ACTIVITY - e—-— ASSUMED FOOD LEVEL At ico ” —— ao aan - CALCULATED HUMAN LEVEL - eK “7 ” -— SS ee a ee ee —— a ee ee eee £.0 5 —_ — — -— “7 La — | ° | 30 L 60 90 | 120 TIME, DAYS Lt 150 180 240 Fig. 6— Calculated effect of temporary increase in Cs" level of the diet on the Cs" level in people. Table 7— ESTIMATED PRESENT AND FUTURE CONCENTRATIONS OF Cs" IN THE POPULATION ON THE BASIS OF ECOLOGICAL CONSIDERATIONS Cs" concentration 1965—No Region Northern United States North temperate latitudes South temperate latitudes Rest of world World average Continued Mid-1957, more tests, puc/g of K pe/g of K 62 34 10 7 (32) 69 37 11 8 (36) 620 340 100 70 (320) pue/g of K tests,* * Assuming equilibrium with continued testing at the past 5-year rate (equiva- lent to 10 megatons of fission per year). f Population weighted average on the basis of present world population dis- tribution. 298 L 240 270 = ole