Environmental variables
| Days | Mean | SD | Min | 10th | Median | 90th | Max | |
| Measured particles: | ||||||||
| PM10 (μg/m3) 24 h | 823 | 23.3 | 12.9 | 4.0 | 11.4 | 20.0 | 38.3 | 102.3 |
| PM2.5 (μg/m3) 24 h | 675 | 14.5 | 9.7 | 2.1 | 6.0 | 11.7 | 25.8 | 82.8 |
| PM2.5–10 (μg/m3) 24 h | 669 | 9.0 | 4.6 | 1.0 | 4.1 | 8.0 | 15.2 | 35.4 |
| BS (μg/m3) 24 h | 823 | 13.2 | 9.0 | 1.8 | 5.1 | 10.9 | 23.6 | 71.9 |
| SO4 2− (μg/m3) 24 h | 814 | 3.7 | 3.1 | 0.5 | 1.3 | 2.7 | 7.7 | 22.6 |
| Measured gases: | ||||||||
| NO2 (ppb) max 1 h | 823 | 37.2 | 15.1 | 10.7 | 22.9 | 34.9 | 51.7 | 176.1 |
| O3 (ppb) max 8 h | 823 | 24.0 | 13.8 | 0.4 | 6.7 | 24 | 37.5 | 89.9 |
| SO2 (ppb) 24 h | 823 | 7.2 | 4.7 | 1.9 | 3.3 | 5.8 | 12.3 | 59.8 |
| CO (ppm) max 8 h | 821 | 0.8 | 0.7 | 0.2 | 0.3 | 0.6 | 1.3 | 10.0 |
| Mean temperature (°C) | 823 | 9.3 | 5.2 | −3.4 | 2.4 | 9.3 | 16.1 | 22.6 |
| Mean humidity (%) | 823 | 78.7 | 10.0 | 51.0 | 65.5 | 79.5 | 91.5 | 99.0 |