(SKELETON Pu) / (SKELETON Pu #¢LIVER Pu ) oO Oo Oo o b nN oo o ' t q { be TT TTT COMBINED OCCUPATIONAL (59) PLUS NON- OCCUPATIONAL (110) HUMAN AUTOPSY SAMPLES e- TOT TTT TTT 1.Or e e ARITHMETIC MEAN = 0.74 STANDARD DEVIATION =0. 2]! © 0. Lf fg 5 pg gg | lO ; 20 ft {| 40 yy f[ | 60 Ff 80 CUMULATIVE PERCENT LESS THAN VALUE 95