Table 4.
Means and standard deviation (SD) of fine particulate matter (PM2.5) concentration (µg/m3) by season and study area.
| Personal |
Kitchen |
Living room |
Outdoor |
|||||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| Warm season | ||||||||
| Suzhou (urban) | 40.7 | 81.1 | 41.6 | 103.2 | 37.9 | 65.4 | 40.9 | 21.3 |
| Gansu (rural) | 60.4 | 269.9 | 142.3 | 1415.1 | 43.4 | 130.3 | 17.9 | 9.6 |
| Henan (rural) | 78.6 | 145.9 | 77.5 | 206.6 | 57.4 | 69.7 | 51.5 | 23.0 |
| Cool season | ||||||||
| Suzhou (urban) | 78.2 | 293.1 | 81.6 | 270.2 | 61.9 | 89.4 | 88.5 | 51.0 |
| Gansu (rural) | 160.5 | 1514.9 | 508.1 | 4195.6 | 118.3 | 359.0 | 44.3 | 32.2 |
| Henan (rural) | 114.8 | 329.5 | 222.3 | 868.1 | 109.1 | 165.0 | 166.4 | 105.1 |