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Table 2 NO2 Summary Statistics

From: Nitrogen dioxide concentrations in neighborhoods adjacent to a commercial airport: a land use regression modeling study

  Session 1 Session 2 Session 3 All sessions
Date October 2007 March 2008 June 2008 -
Sampling period 14 days 7 days 7 days -
N 167 248 229 644
Mean (SE) (ppb) 12.4 (0.3) 12.2 (0.3) 10.4 (0.2) 11.6 (0.16)
Minimum (ppb) 0.8 1.2 3.7 0.8
Median (ppb) 11.6 11.7 9.8 11.0
75th Percentile (ppb) 15.2 13.6 11.8 13.4
95th Percentile (ppb) 18.7 18.4 16.5 17.9
Maximum (ppb) 30.6 39.4 30.0 39.4