Samples

Specific Activity (Bq/l)

137Cs

40K

214Pb

212Pb

1

-

≤4.46

≤0.22

-

2

0.28 ± 0.07

≤5.51

≤0.19

≤0.2

3

-

-

≤0.14

-

4

0.15 ± 0.07

-

-

≤0.04

5

0.12 ± 0.07

≤3.58

-

≤0.15

Average

0.18 ± 0.07

≤4.51

≤0.18

≤0.13