Table 2.
Percentiles of Factors in the sample of N = 55 cities in Italy.
| Percentiles | Total days exceeding the limits set for PM10 2018 | p(k) | Density of population inhabitants per km2 2019 |
p(k) | Wind Speed* km/h 2020 |
p(k) | Rates of mortality for trachea, bronchi and lung cancer 10 000 people 2017 |
p(k) | Total score | Index c | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| <25th | 38 | 0 | 470 | 0 | > | 0 | 5.23 | 0 | 0 | min | 0 |
| 50th | 72 | 1 | 950 | 1 | 10.5 | 1 | 5.88 | 1 | 4 | .33 | |
| 75th | 116 | 2 | 1738 | 2 | 9.4 | 2 | 6.7 | 2 | 8 | .67 | |
| >75th | >116 | 3 | >1738 | 3 | 7.85 | 3 | >6.7 | 3 | 12 | Max | 1 |
Notes: * wind speed has inverted percentiles from 75th to 25th in order to assign a low score to high percentile (when high wind speed fosters dispersion of air pollution) and high score to low percentile (when low wind speed prevents dispersion of air pollution, cf., Coccia, 2020b).