Table 1.
The means, medians and IQRs for daily air pollutants and weather conditions variables in Changzhou, 2015–2016
| Variables | Mean±SD | Min | 25th | Median | 75th | Max | IQR |
| Weather Condition | |||||||
| Temperature (°C) | 17.1±8.9 | −6.6 | 9.4 | 18.3 | 24.1 | 34.6 | 5.8 |
| Humidity (%) | 75.3±14.2 | 35.0 | 66.0 | 76.0 | 86.0 | 100.0 | 10.0 |
| Air Pollutions | |||||||
| PM2.5 (μg/m3) | 51.8±30.6 | 6.8 | 29.4 | 44.4 | 64.4 | 181.1 | 20.0 |
| PM10 (μg/m3) | 85.3±43.3 | 10.5 | 51.5 | 76.6 | 108.6 | 289.1 | 32.0 |
| NO2 (μg/m3) | 38.7±16 | 10.9 | 26.5 | 35.8 | 47.8 | 117.3 | 12.0 |
| SO2 (μg/m3) | 22.3±10 | 6.9 | 14.7 | 20.2 | 27.0 | 67.8 | 6.9 |
| CO (mg/m3) | 1±0.3 | 0.4 | 0.8 | 1.0 | 1.2 | 2.6 | 0.2 |
CO, carbon monoxide; NO2, nitrogen dioxide; PM2.5, particulate matter <2.5 µm in diameter; PM10, particulate matter <10 µm in diameter; SO2, sulfur dioxide.