Table 1.
Summaries of observed data from five weather monitors (from January 2013 to June 2016) and up to 13 pollutant monitors (from January 2013 to December 2015).
| N | Mean | SD | Minimum | Median | Maximum | |
|---|---|---|---|---|---|---|
| Daily values | ||||||
| Weather variables | ||||||
| Temperature (°C) | 6385 | 16.8 | 8.8 | −6.1 | 17.7 | 36.2 |
| Wind speed (m/s) | 6385 | 4.6 | 1.5 | 1.3 | 4.4 | 15.7 |
| Humidity (%) | 6385 | 73.8 | 13.5 | 29.0 | 75.0 | 100.0 |
| Precipitation (mm) | 5927 | 4.0 | 11.2 | 0.0 | 0.0 | 170.2 |
| Pollutants (μg/m³) | ||||||
| PM10 | 10,230 | 87.3 | 48.5 | 3.0 | 76.0 | 429.0 |
| PM2.5 | 10,209 | 63.1 | 39.1 | 3.0 | 55.0 | 405.0 |
| SO2 | 10,225 | 24.2 | 15.3 | 1.0 | 21.0 | 164.0 |
| CO (mg/m³) | 10,237 | 0.9 | 0.4 | 0.1 | 0.8 | 3.5 |
| NO2 | 10,240 | 50.3 | 22.1 | 5.0 | 47.0 | 321.0 |
| O3 | 10,213 | 97.4 | 52.0 | 1.0 | 90.0 | 1251.0 |
| Monthly values | ||||||
| Weather variables | ||||||
| Temperature (°C) | 210 | 16.8 | 8.3 | 3.6 | 16.8 | 32.3 |
| Wind speed (m/s) | 210 | 4.6 | 0.7 | 3.5 | 4.6 | 6.7 |
| Humidity (%) | 210 | 73.8 | 6.7 | 56.4 | 74.0 | 91.9 |
| Precipitation (mm) | 210 | 4.1 | 3.5 | 0.2 | 3.3 | 25.0 |
| Pollutants (μg/m³) | ||||||
| PM10 | 348 | 87.2 | 27.2 | 43.2 | 80.2 | 194.3 |
| PM2.5 | 348 | 63.0 | 23.5 | 24.5 | 58.7 | 155.6 |
| SO2 | 348 | 24.1 | 10.2 | 8.5 | 21.9 | 63.4 |
| CO (mg/m³) | 348 | 0.9 | 0.2 | 0.4 | 0.9 | 1.8 |
| NO2 | 348 | 50.7 | 15.1 | 24.3 | 48.5 | 109.3 |
| O3 | 348 | 95.9 | 34.5 | 18.6 | 104.5 | 182.2 |