Table 2

Outdoor PM2.5 (μg/m3) by level of lit cigarettes and location of the monitor, raw data (10 s average), Toronto Doorway Study, May to June 2008

Distance from monitor to the nearest lit cigaretteLevel of lit cigarettesMeasurement time, minMean (SD)MedianMinimum–maximum
<1.5 m02428.8 (5.6)8.00.0 to 63.0
1–44214.5 (11.3)12.01.0 to 77.0
5+522.5 (14.7)17.011.0 to 79.0
1.5–3 m07959.1 (7.2)8.00.0 to 155.0
1–462615.5 (18.0)11.00.0 to 496.0
5+10023.1 (29.1)16.03.0 to 434.0
>3 m0
1–48613.9 (12.7)9.00.0 to 110.0
5+718.8 (9.5)19.55.0 to 41.0
  • PM2.5, air pollutant particles with a diameter of 2.5 μm or less.