Table 1.
Daily summary statistics of air pollutants, weather variables and number of deaths among elderly.
| Environment variable/death | Daily measures | |||||
|---|---|---|---|---|---|---|
| Minimum | 1st Quartile | Median | Mean | 3rd Quartile | Maximum | |
| Environment variables | ||||||
| PM10 (μg/m3) | 4.6 | 26.5 | 37.1 | 40.8 | 50.4 | 158.7 |
| NO2 (μg/m3) | 9.2 | 38.4 | 48.2 | 51.1 | 60.9 | 150.5 |
| CO (ppm) | 0.4 | 1.0 | 1.4 | 1.6 | 2.0 | 8.6 |
| Mean temperature (ºC) | 8.9 | 18.5 | 21.1 | 20.8 | 23.4 | 28.9 |
| Mean relative humidity (%) | 27.3 | 66.9 | 74.0 | 72.7 | 79.9 | 94.3 |
| Deaths (n) | ||||||
| Nonaccidental | 59.0 | 96.0 | 108.0 | 109.1 | 121.0 | 178.0 |
| Circulatory | 19.0 | 39.0 | 45.0 | 45.2 | 51.0 | 84.0 |
| Cerebrovascular | 1.0 | 9.0 | 11.0 | 11.5 | 14.0 | 28.0 |
| Respiratory | 3.0 | 13.0 | 17.0 | 17.0 | 20.0 | 42.0 |
| Chronic respiratory | 0.0 | 4.0 | 6.0 | 5.9 | 7.0 | 18.0 |
| Cancer | 7.0 | 19.0 | 23.0 | 22.9 | 26.0 | 46.0 |
| Notes: CO, carbon monoxide; NO2, nitrogen dioxide; PM10, particulate matter smaller than 10 μm. | ||||||