Summary statistics of annual air pollution and temperature levels during the study period
| Mean±SD | N | Range | Interquartile range | |
| PM10, μg/m3 | 67.84±33.54 | 1023 | 21.00–169.00 | 48.00 |
| PM2.5, μg/m3 | 35.31±15.90 | 332 | 8.76–82.28 | 20.42 |
| O3, ppb | 22.95±6.76 | 1023 | 11.50–42.30 | 8.95 |
| NO2, ppb | 24.53±9.53 | 1023 | 5.64–53.57 | 12.83 |
| SO2, ppb | 4.94±3.61 | 1023 | 0.30–22.20 | 3.18 |
| CO, ppm | 0.85±0.47 | 1023 | 0.26–3.03 | 0.33 |
| Temperature, °C | 23.72±4.32 | 1023 | 11.69–30.40 | 7.91 |
CO, carbon monoxide; PM10, particulate matter <10 μm in aerodynamic diameter; PM2.5, particulate matter <2.5 μm in aerodynamic diameter; NO2, nitrogen dioxide; O3, ozone; SO2, sulfur dioxide.