Age group | 212Pb | 214Pb | 40K | 137Cs | Total |
7 - 12y | 0.114 | 0.002 | 2.579 | 0.792 | 3.488 |
12 - 17y | 0.074 | 0.001 | 1.508 | 0.102 | 1.687 |
>17y | 0.343 | 0.001 | 1.230 | 0.102 | 1.677 |