Table 2 Summary statistics for air pollutants concentrations and meteorological variables in 26 cities in China during 2014–2015.
From: Association of short-term exposure to ambient carbon monoxide with hospital admissions in China
Variable | Mean ± SD | Minimum | Percentile | Maximum | ||
|---|---|---|---|---|---|---|
25th | 50th | 75th | ||||
CO (mg/m3) | 1.15 ± 0.63 | 0.14 | 0.76 | 0.99 | 1.32 | 8.41 |
PM2.5 (μg/m3) | 63.5 ± 50.6 | 5.1 | 31.5 | 49.4 | 79.0 | 897.5 |
PM10 (μg/m3) | 106.8 ± 71.9 | 7.4 | 58.3 | 89.4 | 135.2 | 977.3 |
NO2 (μg/m3) | 44.1 ± 19.4 | 4.5 | 30.0 | 40.2 | 54.1 | 175.8 |
SO2 (μg/m3) | 29.6 ± 32.6 | 1.9 | 11.4 | 18.8 | 33.6 | 316.9 |
O3 (mg/m3) | 97.4 ± 53.9 | 2 | 58 | 87 | 129 | 357 |
Temperature (°C) | 14.5 ± 10.9 | −25.7 | 7.0 | 16.4 | 23.3 | 35.5 |
Relative humidity (%) | 69.2 ± 33.2 | 8 | 53 | 69 | 80 | 97 |
