Table 1. Summary statistics for daily number of deaths related to coronary heart disease, meteorologic conditions, and concentrations of air pollutants in Shanghai, 2001–2004.
| Mean | SD | Min | 25th percentile | Median | 75th percentaile | Max | |
| CHD-related deaths | 25.5 | 7.2 | 7.0 | 20.0 | 25.0 | 30.0 | 56.0 |
| Meteorologic measures | |||||||
| DTR (°C) | 6.8 | 2.7 | 1.0 | 4.8 | 6.8 | 8.7 | 16.6 |
| Mean Temperature (°C) | 17.7 | 8.5 | −2.4 | 10.3 | 18.3 | 24.7 | 34.0 |
| Relative humility (%) | 72.9 | 11.4 | 33.3 | 65.5 | 73.5 | 81.0 | 97.0 |
| Concentrations of air pollutants | |||||||
| PM10 (μg/m3) | 101.9 | 64.4 | 14.0 | 56.0 | 84.0 | 128.0 | 567.0 |
| SO2 (μg/m3) | 44.7 | 24.2 | 8.0 | 27.0 | 40.0 | 56.0 | 183.0 |
| NO2 (μg/m3) | 66.6 | 24.8 | 14.0 | 50.0 | 62.0 | 79.0 | 254.0 |
| O3 (μg/m3) | 64.8 | 39.3 | 2.0 | 38.3 | 57.9 | 82.8 | 301.0 |
Abbreviations: CHD, coronary heart disease; DTR, diurnal temperature range; PM10, particulate matter <10 μm in diameter; SO2, sulfur dioxide; NO2, nitrogen dioxide; O3, ozone.