Table 2 Summary statistics of air pollutants and meteorological variables in Shanghai, China from January 1, 2008 to July 31, 2020
Variables | Mean ± SD | Minimum | P25 | Median | P75 | Maximum |
|---|---|---|---|---|---|---|
Air pollutants | ||||||
PM2.5, μg/m3 * | 43.71 ± 31.18 | 5.00 | 22.00 | 36.00 | 56.00 | 255.00 |
PM10, μg/m3 | 66.12 ± 44.07 | 6.00 | 37.28 | 54.00 | 82.00 | 599.29 |
NO2, μg/m3 | 45.94 ± 20.31 | 5.00 | 31.00 | 43.00 | 57.00 | 141.65 |
SO2, μg/m3 | 21.08 ± 17.39 | 3.00 | 9.00 | 15.00 | 26.83 | 146.78 |
O3, μg/m3 * | 98.59 ± 41.78 | 10.00 | 69.00 | 92.00 | 120.00 | 269.00 |
CO, mg/m3 * | 0.72 ± 0.26 | 0.30 | 0.52 | 0.68 | 0.80 | 2.28 |
Meteorological factors | ||||||
Temperature, °C | 17.33 ± 8.86 | −6.20 | 9.50 | 18.30 | 24.60 | 35.70 |
Relative humidity, % | 71.50 ± 12.77 | 23.00 | 63.00 | 72.00 | 81.00 | 100.00 |