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Table 1 Daily mortality, weather and air pollution data in Guangzhou (2009–2014)

From: Association of short-term exposure to sulfur dioxide and hospitalization for ischemic and hemorrhagic stroke in Guangzhou, China

 Mean (SD)MinP25P50P75Max
Daily stroke hospital admissions
 Ischemic stroke27 (18)1142135101
 Hemorrhagic stroke4 (3)024615
Weather
 Temperature (°C)21.99 (6.37)4.8017.4023.4027.3032.30
 Humidity (%)76.30 (12.48)27.0069.0079.0085.00100.00
Air pollutant
 SO2 (μg/m3)27.82 (18.85)2.0014.4222.2136.00116.00
 NO2 (μg/m3)54.33 (23.90)0.0037.8749.3265.9324.100
 PM10 (μg/m3)72.93 (42.15)3.0044.0064.0094.41417.00
 PM2.5 (μg/m3)a46.07 (24.77)6.9028.7843.4062.86156.35
 O3 (μg/m3)a68.69 (25.50)7.0051.2785.80127.91326.55
  1. Abbreviations: SO2 sulfur dioxide; NO2 nitrogen dioxide; O3 ozone; PM10 particulate matter with aerodynamic diameter less than 10 μm; PM2.5 particulate matter with aerodynamic diameter less than 2.5 μm; P25, P50, P75, the 25th, 50th and 75th percentile
  2. a, data were in the period of March 8, 2012 to December 31, 2014
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