Table 1 Descriptive statistics of daily death, meteorological factors and concentrations of air pollutants in hot season (May–September) in Wuhan, China during 2003–2010
Variable | Mean ± SD | Min | P 25 | Median | P 75 | Max |
|---|---|---|---|---|---|---|
Daily death | ||||||
Total | 9.7 ± 3.3 | 1 | 7 | 9 | 12 | 34 |
Male | 5.4 ± 2.4 | 0 | 4 | 5 | 7 | 16 |
Female | 4.3 ± 2.3 | 0 | 3 | 4 | 6 | 21 |
Age < 65 | 2.7 ± 1.6 | 0 | 1 | 3 | 4 | 10 |
Age ≥ 65 | 7.0 ± 2.9 | 0 | 5 | 7 | 9 | 31 |
Meteorological factors | ||||||
Minimum temperature (°C) | 23.6 ± 3.8 | 10.8 | 20.8 | 23.8 | 26.3 | 32.3 |
Mean temperature (°C) | 26.7 ± 3.9 | 12.7 | 24.0 | 26.9 | 29.7 | 35.8 |
Maximum temperature (°C) | 30.9 ± 4.2 | 18.9 | 28.3 | 31.3 | 34.0 | 39.6 |
Relative humidity (%) | 71.4 ± 10.7 | 37 | 64 | 72 | 79 | 96 |
Air Pollutants (μg/m3) | ||||||
PM10 | 90.5 ± 44.0 | 11 | 58 | 82 | 115 | 337 |
SO2 | 35.4 ± 19.7 | 2 | 21 | 32 | 46 | 133 |
NO2 | 46.4 ± 18.9 | 13 | 33 | 43 | 55 | 288 |