Area* | Pre-CCS conc(μg/m3) | Post-CCS conc(μg/m3) | Post−pre difference(μg/m3) | YLG during 1 year | YLG during 10 years | YLG during 10 years per 100 000 population |
(A) Changes in traffic flow limited to charging zone and its boundary | ||||||
GL | 39.79 | 39.77 | −0.02 | 4 | 378 | 5 |
CCZ | 54.47 | 53.99 | −0.48 | 5 | 450 | 120 |
Non-CCZ | 39.36 | 39.36 | 0.00 | 0 | 0 | 0 |
(B) Only meteorology held constant between pre and post scenarios | ||||||
GL | 40.79 | 39.77 | −1.02 | 219 | 19 201 | 266 |
CCZ | 56.12 | 53.99 | −2.13 | 21 | 1984 | 531 |
Non-CCZ | 40.35 | 39.36 | −0.99 | 202 | 17 712 | 259 |
(C) CCZ wards limited to wards with centroids within charging zone | ||||||
GL | 39.87 | 39.77 | −0.10 | 22 | 1888 | 26 |
CCZ | 57.79 | 56.77 | −1.02 | 5 | 496 | 244 |
Non-CCZ | 39.63 | 39.55 | −0.08 | 17 | 1472 | 21 |
conc, concentrations; CCZ, CCZ wards; GL, Greater London; Non-CCZ, non-CCZ wards; YLG, years of life gained.