Table 3.
top) The median pollution reductions averaged across sites (D, N, O, S, W) in 2020 when comparing the HLD median to 2019, to HLD median 2014–2019 and to HLD predicted 2020 in percentage. (Data is provided in Supplementary Table 3); bottom) Calculated traffic reduction in 2020 when comparing the HLD median to 2019 and to the 2017–2019 HLD median in percentage.
| City average 2020 vs 2019 |
City average 2020 vs 2014–2019 |
City average 2020 vs predicted |
|
| Reduction in NO2 | −41.6% | −38.1% | −36.9% |
| Reduction in PM10 | −6.6% | −11.0% | −14.2% |
|
| |||
| Median 2019 |
Median 2017–2019 |
||
| Traffic reduction (D) | −51.6% | −43.9% | |
| Traffic reduction (O) | −45.6% | −45.6% | |