Table 1 Daily mortality, weather and air pollution data in Guangzhou (2009–2014)
| Â | Mean (SD) | Min | P25 | P50 | P75 | Max |
|---|---|---|---|---|---|---|
Daily stroke hospital admissions | ||||||
 Ischemic stroke | 27 (18) | 1 | 14 | 21 | 35 | 101 |
 Hemorrhagic stroke | 4 (3) | 0 | 2 | 4 | 6 | 15 |
Weather | ||||||
 Temperature (°C) | 21.99 (6.37) | 4.80 | 17.40 | 23.40 | 27.30 | 32.30 |
 Humidity (%) | 76.30 (12.48) | 27.00 | 69.00 | 79.00 | 85.00 | 100.00 |
Air pollutant | ||||||
 SO2 (μg/m3) | 27.82 (18.85) | 2.00 | 14.42 | 22.21 | 36.00 | 116.00 |
 NO2 (μg/m3) | 54.33 (23.90) | 0.00 | 37.87 | 49.32 | 65.93 | 24.100 |
 PM10 (μg/m3) | 72.93 (42.15) | 3.00 | 44.00 | 64.00 | 94.41 | 417.00 |
 PM2.5 (μg/m3)a | 46.07 (24.77) | 6.90 | 28.78 | 43.40 | 62.86 | 156.35 |
 O3 (μg/m3)a | 68.69 (25.50) | 7.00 | 51.27 | 85.80 | 127.91 | 326.55 |