Table 1. Descriptive statistics of daily weather conditions and years of life lost from 2003 to 2007 in Guangzhou, China.
| Variables | Minimum | 1% | 25% | Median | 75% | 99% | Maximum | Mean | SD |
|---|---|---|---|---|---|---|---|---|---|
| Daily meteorological measures | |||||||||
| Maximum temperature(°C) | 7.2 | 11.0 | 23.4 | 28.8 | 32.6 | 37.2 | 39.1 | 27.6 | 6.2 |
| Mean temperature(°C) | 6.3 | 8.2 | 18.6 | 24.4 | 28.0 | 32.0 | 34.2 | 23.0 | 6.1 |
| Minimum temperature(°C) | 2.1 | 5.5 | 15.3 | 21.1 | 25.0 | 28.5 | 30.4 | 19.8 | 6.2 |
| Relative humidity (%) | 20.0 | 35.0 | 64.0 | 72.0 | 80.0 | 93.0 | 97.0 | 80.0 | 12.9 |
| Atmospheric pressure(hPa) | 988.7 | 994.4 | 1003.4 | 1008.5 | 1014.0 | 1022.6 | 1027.2 | 1008.7 | 6.8 |
| Daily concentrations of air pollutants | |||||||||
| PM10(μg/m3) | 7.0 | 19.1 | 52.1 | 80.0 | 114.6 | 253.6 | 370.1 | 88.2 | 48.5 |
| NO2(μg/m3) | 24.7 | 29.4 | 48.0 | 65.8 | 89.9 | 185.1 | 281.3 | 73.2 | 34.0 |
| SO2(μg/m3) | 6.1 | 8.3 | 29.3 | 49.7 | 80.3 | 180.8 | 237.3 | 59.3 | 39.6 |
| Daily years of life lost | |||||||||
| Non-accidental mortality | 224.6 | 464.5 | 665.6 | 765.3 | 877.1 | 1247.4 | 2699.0 | 781.5 | 170.4 |
| Cardiovascular mortality | 44.8 | 105.9 | 194.3 | 240.5 | 297.5 | 457.7 | 933.2 | 249.9 | 80.7 |
| Respiratory mortality | 8.0 | 24.1 | 67.2 | 92.9 | 126.2 | 239.2 | 378.9 | 100.3 | 45.9 |
| Gender | |||||||||
| Male | 62.3 | 235.6 | 380.2 | 454.6 | 531.8 | 772.4 | 1543.3 | 461.4 | 117.4 |
| Female | 90.8 | 143.3 | 251.2 | 309.0 | 376.9 | 574.1 | 1155.7 | 320.0 | 98.2 |
| Age(years) | |||||||||
| 0-74 | 159.7 | 297.3 | 476.8 | 565.3 | 663.8 | 945.7 | 1882.8 | 576.1 | 143.3 |
| 75+ | 64.9 | 117.2 | 183.5 | 219.6 | 264.2 | 402.8 | 883.5 | 227.8 | 63.8 |
| Education level | |||||||||
| Low education | 102.4 | 186.6 | 311.9 | 373.9 | 458.6 | 698.0 | 1524.9 | 388.9 | 113.4 |
| High education | 69.9 | 137.2 | 273.1 | 338.6 | 409.1 | 628.3 | 1021.5 | 346.3 | 103.9 |
| Number of daily deaths | |||||||||
| Non-accidental mortality | 20 | 39 | 52 | 59 | 69 | 99 | 233 | 61.5 | 13.6 |
| Cardiovascular mortality | 6 | 11 | 19 | 23 | 28 | 44 | 102 | 23.8 | 7.4 |
| Respiratory mortality | 2 | 4 | 8 | 11 | 14 | 24 | 46 | 11.5 | 4.5 |
| Gender | |||||||||
| Male | 8 | 19 | 29 | 33 | 39 | 57 | 127 | 34.2 | 8.0 |
| Female | 11 | 14 | 22 | 27 | 32 | 47 | 106 | 27.3 | 7.6 |
| Age(years) | |||||||||
| 0–74 | 9 | 16 | 25 | 28 | 33 | 46 | 103 | 29.0 | 6.6 |
| 75+ | 11 | 17 | 26 | 31 | 38 | 60 | 130 | 32.5 | 9.4 |
| Education level | |||||||||
| Low education | 14 | 20 | 30 | 36 | 43 | 65 | 159 | 37.5 | 10.2 |
| High education | 6 | 9 | 16 | 20 | 24 | 35 | 61 | 20.0 | 5.6 |
Note. low education: primary school or lower; high education: secondary or higher.