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. 2014 Jul 11;13:58. doi: 10.1186/1476-069X-13-58

Table 2.

Daily pollution and meteorological levels 2004 to 2011

  All Year
 Warm (April to October)
 Cold (September to March)
 
 Percentile
  
 Percentile
  
 Percentile
% Complete 25th 50th 75th % Complete 25th 50th 75th % Complete 25th 50th 75th
CO (ppb)
 99.9
 186.8
 246.5
 336.9
 99.8
 178.6
 239.1
 318.0
 100.0
 198.8
 261.0
 374.5
NO2 (ppb)
 99.8
 7.3
 10.5
 14.5
 99.7
 6.1
 8.9
 12.2
 100.0
 9.7
 13.2
 17.1
O3 8 hr (ppb)
 100.0
 27.5
 35.8
 48.1
 100.0
 29.6
 40.6
 55.4
 100.0
 25.6
 32.1
 39.4
PM2.5 (μg/m3)
 99.8
 8.4
 10.7
 14.1
 99.7
 9.1
 11.7
 15.5
 100.0
 7.6
 9.7
 12.3
SO2 (ppb)
 99.9
 0.7
 1.5
 2.5
 99.8
 0.6
 1.2
 2.2
 100.0
 1.1
 1.9
 2.8
Temperature (°C)
 100.0
 16.5
 22.7
 27.6
 100.0
 24.0
 26.9
 28.9
 100.0
 11.1
 15.4
 19.4
Relative Humidity (%)
 99.9
 62.4
 70.3
 77.2
 99.8
 63.5
 69.4
 74.5
 100.0
 59.3
 72.6
 80.8
Apparent Temperature (°C) 99.9 15.5 24.5 31.9 99.8 26.1 31.0 33.7 100.0 8.9 14.0 20.2