Table 1.
Summary of radon surveys in dwellings [14].
| Country | Indoor radon concentration (Bq/m3) | ||
|---|---|---|---|
| Arithmetic mean | Geometric mean | Geometric standard deviation | |
| Australia | 11 | 8 | 2.1 |
| Belgium | 48 | 38 | 2.0 |
| Canada | 28 | 11 | 3.9 |
| Czech Republic | 140 | 44 | 2.1 |
| Denmark | 59 | 39 | 2.2 |
| Finland | 120 | 84 | 2.1 |
| France | 89 | 53 | 2.0 |
| Germany | 49 | 37 | 2.0 |
| Greece | 55 | 44 | 2.4 |
| Ireland | 89 | 57 | 2.4 |
| Italy | 70 | 52 | 2.1 |
| Portugal | 62 | 45 | 2.2 |
| Mexico | 140 | 90 | NA |
| Netherlands | 23 | 18 | 1.6 |
| Spain | 90 | 46 | 2.9 |
| United Kingdom | 20 | 14 | 3.2 |
| USA | 46 | 25 | 3.1 |
| Switzerland | 78 | 51 | 1.8 |
| Republic of Korea | 53 | 43 | 1.8 |
| Japan | 16 | 13 | 1.8 |
∗Not available at the moment.