Table 1.
Statistical summary of case numbers, air quality parameters, and meteorological parameters.
| Mean | STD | Min | Median | Max | |
|---|---|---|---|---|---|
| The weekly confirmed cases | 2088 | 6867 | 21 | 580 | 91,453 |
| The total cases (thousand) | 141 | 116 | 10.4 | 100 | 679 |
| Ambient air quality parameters | |||||
| SO2 (μg/m3) | 17.2 | 17.9 | 1.6 | 12.2 | 164 |
| NO2 (μg/m3) | 31.1 | 17.0 | 5.1 | 27.3 | 108 |
| O3 (μg/m3) | 41.3 | 21.0 | 3.2 | 43.9 | 106 |
| PM10 (μg/m3) | 45.2 | 20.8 | 6.9 | 41.7 | 148 |
| PM2.5 (μg/m3) | 21.7 | 11.5 | 0.8 | 19.4 | 84 |
| Meteorological parameters | |||||
| Temperature (0C) | 5.8 | 4.2 | −11.8 | 6.3 | 15 |
| Humidity (%) | 68.1 | 10.4 | 36.5 | 69.2 | 95 |
| Wind angle | 188 | 69 | 14 | 190 | 341 |
| Wind speed (m/s) | 1.8 | 0.9 | 0.5 | 1.6 | 7.7 |