Sample

Well depth

Ra-226

Rn-222

Ra-228

K-40

N

m

Bq/l

Bq/l

Bq/l

Bq/l

1 W

646

1.4

16

2.5

3.8

2 W

736

1.0

10.5

2.7

5.4

3 W

649

2.0

45

4.5

4.3

4 W

577

2.4

32

5.0

3.5

5 W

737

1.4

5.3

2.0

4.9

6 W

612

1.7

23

4.4

3.7

7 W

707

2.1

16

4.2

5.7

8 L

lake

2.3

6.4

3.8

11.5