Table 1 Summary statistics of daily air pollutants, weather condition and emergency hospital visits for hypertension in Beijing, 2007
Minimum | 25% | 50% | 75% | Maximum | Mean | SD | |
|---|---|---|---|---|---|---|---|
SO2 (μg/m3) | 6.0 | 15.0 | 26.0 | 64.0 | 247.5 | 47.3 | 48.6 |
NO2 (μg/m3) | 17.6 | 51.2 | 64.0 | 78.4 | 150.4 | 66.6 | 22.8 |
PM10 (μg/m3) | 15.0 | 96.0 | 140.0 | 184.0 | 600.0 | 149.3 | 85.7 |
Temperature (°C) | -6.1 | 3.7 | 14.5 | 25.0 | 30.7 | 14.1 | 10.7 |
Humidity (%) | 15.0 | 37.0 | 54.0 | 74.0 | 97.0 | 54.2 | 20.9 |
EHVs | 0 | 2 | 4 | 5 | 19 | 4.1 | 0.1 |