Table 1.
Descriptive statistics of daily confirmed new cases, human mobility index, air quality index, air pollutants and meteorological variables across all cities and days.
| Mean (SD) | Min | Max | |
|---|---|---|---|
| Daily confirmed cases | 12.94 (228.96) | 0 | 13,436 |
| Human mobility index | 2.74 (1.08) | 0.57 | 8.88 |
| Air quality index | 70.72 (45.34) | 13 | 500 |
| PM2.5 (μg/m3) | 46.43 (38.55) | 2 | 554 |
| PM10 (μg/m3) | 62.97 (49.76) | 4 | 632 |
| NO2 (μg/m3) | 19.28 (11.87) | 2 | 86 |
| O3 (μg/m3) | 78.22 (20.58) | 11 | 152 |
| SO2 (μg/m3) | 12.23 (9.90) | 2 | 87 |
| CO (mg/m3) | 0.85 (0.47) | 0.1 | 7.4 |
| Mean temperature (°C) | 2.82 (10.11) | −33.8 | 26.5 |
| Relative humidity (%) | 67.25 (17.42) | 17 | 100 |
| Atmospheric pressure (hPa) | 964.08 (76.15) | 668.1 | 1039 |
| Wind speed (m/s) | 2.11 (1.19) | 0 | 15.4 |