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Arithmetic and geometric means of indoor radon concentrations in eight provinces of upper northern Thailand (UNT).
| Provinces | Houses(n) | Rn concentration (Bq m−3) | |||
|---|---|---|---|---|---|
| Mean (SD) | Geomean | Min | Max | ||
| UNT | 192 | 105 (74) | 80 | 11 | 405 |
| Phrae | 16 | 168 (69) | 152 | 54 | 286 |
| Phayao | 7 | 167 (52) | 157 | 64 | 219 |
| Chiang Rai | 25 | 139 (77) | 112 | 31 | 242 |
| Chiang Mai | 46 | 110 (87) | 84 | 16 | 405 |
| Nan | 10 | 90 (55) | 75 | 25 | 207 |
| Mae Hong Son | 17 | 84 (55) | 71 | 35 | 241 |
| Lampang | 32 | 78 (54) | 65 | 32 | 216 |
| Lamphun | 39 | 75 (60) | 53 | 11 | 193 |
