30 | | 0.2 0.4 | — on © —_ Number of locations NO © 25 pad 0 ae 0.6 i 0.8 Ratio of beta to beta plus gamma doserates Fig. 4 20 I 09 aa 1.0
30 | | 0.2 0.4 | — on © —_ Number of locations NO © 25 pad 0 ae 0.6 i 0.8 Ratio of beta to beta plus gamma doserates Fig. 4 20 I 09 aa 1.0