Table 1.
Environmental and meteorological characteristics of the villages.
| Characteristics | N (k)a | AM (SD) | Median (25%,75% percentile) |
|---|---|---|---|
| Daily average outside temperature, °C | 88 (29) | 10.7 (5.8) | 11.2 (5.6,16.4) |
| Daily average outside humidity, % | 88 (29) | 78 (16.8) | 82.2 (69.9,90.0) |
| Population | 29 (29) | 840 (750) | 570 (420,920) |
| Seasonb | |||
| Autumn | 33 (17) | ||
| Spring | 25 (13) | ||
| Summer | 2 (1) | ||
| Winter | 28 (15) | ||
| Proportion of chimney stoves in a village, k (%) | |||
| > 50% | 22 (75.9) | ||
| ≤ 50% | 7 (24.1) | ||
| Factory within 5 km, k (%) | |||
| Yes | 4 (13.8) | ||
| No | 21 (72.4) | ||
| Unknown | 4 (13.8) | ||
| Coal mine within 5 km, k (%) | |||
| Yes | 4 (13.8) | ||
| No | 21 (72.4) | ||
| Unknown | 4 (13.8) | ||
| Power plants within 5 km, k (%) | |||
| Yes | 3 (10.3) | ||
| No | 22 (75.9) | ||
| Unknown | 4 (13.8) | ||
AM arithmetic mean, SD standard deviation, km kilometer.
aN = the number of measurements; k = the number of villages.
bMeasurements in 16 villages were performed across multiple seasons.