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City characteristics. Median, minimum, and maximum values amongst the included cities are displayed for COVID-19 cases, city demographics and pollution levels.
| City parameter | Median | Minimum | Maximum |
|---|---|---|---|
| Total confirmed cases (#) | 2,644 | 432 | 112,822 |
| City population sizes (#) | 669,924 | 138,214 | 10,491,206 |
| Density (# per km2 ) | 1,106.47 | 4,268.20 | 1,161.41 |
| Proportion aged above 65 years (%) | 16.1 | 10.0 | 22.8 |
| PM2.5 (μg/m3) | 7.3 | 0.2 | 43.5 |
