Number

Soil type

Reading

Radon concentration (Bq/m3)

Background (Bq/m3)

1

Mountain 1

19

2690

2500

2

Mountain 2

15

2424

3

Farmland

12

1699

4

Cultivated land (uncultivated)

16

2265

5

Cultivated land (plowed)

8

1132

6

Riverbed

6

850

7

Sand

5

708

8

Backfill

7

991