Table 1.
Summary statistics of the daily high concentrations of air pollutants and respiratory admissions, 1 April 1995 through 31 December 2000.
| Variable (unit) | Mean ± SD | Minimum | Maximum (AAQCa) |
|---|---|---|---|
| 0–14 years | |||
| Female (n = 626) | 0.33 ± 0.60 | 0 | 4 |
| Male (n = 976) | 0.52 ± 0.79 | 0 | 6 |
| 15–64 years | |||
| Female (n = 573) | 0.30 ± 0.56 | 0 | 4 |
| Male (n = 310) | 0.16 ± 0.41 | 0 | 3 |
| ≥ 65 years | |||
| Female (n = 938) | 0.50 ± 0.75 | 0 | 5 |
| Male (n = 791) | 0.42 ± 0.66 | 0 | 5 |
| Total (n = 4,214) | 2.23 ± 1.76 | 0 | 14 |
| SO2 (ppb) | 27.5 ± 16.5 | 0 | 129 (100/24 hr) |
| NO2 (ppb) | 38.9 ± 12.3 | 0 | 117 (100/24 hr) |
| O3 (ppb) | 39.3 ± 21.4 | 1 | 129 (80/hr) |
| CO (ppm) | 1.3 ± 1.0 | 0 | 11.82 (3/hr) |
| TRS (ppb) | 8.1 ± 10.6 | 0 | 132 (27/hr) |
| PM10 (μg/m3) | 50.6 ± 35.5 | 9 | 349 (30/24 hr) |
| COH | 0.6 ± 0.4 | 0 | 3.6 (1.0/24 hr) |
| Maximum temperature (°C) | 14.2 ± 11.2 | −15.8 | 35.7 |
| Minimum temperature (°C) | 5.3 ± 9.8 | −21.4 | 25.6 |
| Maximum humidity | 86.1 ± 9.2 | 50.0 | 100.0 |
| Minimum humidity | 53.4 ± 15.0 | 17.0 | 98.0 |
| Maxp | 0.00 ± 0.54 | −2.36 | 2.06 |
| Minp | 0.00 ± 0.70 | −3.42 | 3.12 |
Abbreviations: Maxp, change in maximum barometric pressure from the previous day; Minp, change in minimum barometric pressure from the previous day.
a
Ambient air quality criteria (MOE 2000).