Table 1.
Road-deposited dust sample collection sites. * The Cable Street monitoring station in Lancaster started measuring PM2.5 from October 2020. An approximate average for Lancaster PM2.5 is 8 µg/m3 based on data available at http://www.ukairquality.net/ (accessed on 5 November 2021). PM data obtained from [62,63,64], population data from [65,66,67].
| City | Population Size (2018) | Site | Traffic (Vehicles/Day) | Date Collected | Avg. Annual PM10 (µg/m3) 2018 | Avg. Annual PM2.5 (µg/m3) 2018 |
|---|---|---|---|---|---|---|
| Lancaster | 144,426 | (A6) Cable Street | ~12,000 | 18/10/18 | 22 | No data * |
| Birmingham | 1,141,400 | (A38) Bristol Road | ~32,000 | 20/09/19 | 18 | 12 |
| Observation Site | ||||||
| Mexico City | 8,781,300 | Constitución de la | ~19,200 | 06/03/17 | 47 | 22 |
| República Avenue |