Table 1.
Pollutant | City | Median (IQR) | 1st–99th Percentile |
---|---|---|---|
UFP number (particles/cm3) | Toronto Montreal |
16,172 (14,991) 14,702 (13,549) |
5,008–110,139 3,377–81,623 |
UFP size (nm) | Toronto Montreal |
33.7 (7.7) 29.7 (10.1) |
19–50 15–53 |
BC (ng/m3) | Toronto Montreal |
1,225 (1,151) 1,060 (1,006) |
232–4,384 115–3,916 |
BC = black carbon; IQR = interquartile range; UFP = ultrafine particles.