Table 6.
Values of AQI classes in Italy, Sweden and Turkey within the lockdown 2020 and during the same time in 2019.
| Year | Country/City | Class I |
Class II |
Class III |
Class IV |
Class V |
Class VI |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Per. (%) | Rg. | Per. (%) | Rg. | Per. (%) | Rg. | Per. (%) | Rg. | Per. (%) | Rg. | Per. (%) | Rg. | |||
| 2020 | Italy | Roma | 7.2 | 18–38 | 54.2 | 52–97 | 25.3 | 107–149 | 13.3 | 151–160 | – | – | – | – |
| Milan | 3.6 | 19–31 | 21.7 | 56–97 | 27.7 | 107–149 | 47 | 151–181 | – | – | – | – | ||
| Sweden | Stockholm | 31.7 | 18–50 | 61 | 53–100 | 4.9 | 102–141 | 2.4 | 151–153 | – | – | – | – | |
| Turkey | Ankara | – | – | 19.3 | 57–99 | 29.8 | 102–144 | 50.9 | 151–161 | – | – | – | – | |
| Istanbul | 7.1 | 35–50 | 14.0 | 54–100 | 26.3 | 107–150 | 52.6 | 152–173 | – | – | – | – | ||
| 2019 | Italy | Roma | 1.2 | 22 | 39.8 | 61–97 | 34.9 | 107–149 | 24.1 | 151–168 | – | – | – | – |
| Milan | 1.2 | 30 | 22.9 | 69–97 | 41.0 | 107–149 | 34.9 | 151–181 | – | – | – | – | ||
| Sweden | Stockholm | 1.2 | 7–50 | 61 | 55–99 | 25.6 | 102–149 | 12.2 | 151–170 | – | – | – | – | |
| Turkey | Ankara | – | – | 7.0 | 76–88 | 43.9 | 104–147 | 49.1 | 151–176 | – | – | – | – | |
| Istanbul | – | – | – | – | 1.7 | 129 | 1.8 | 155 | 91.2 | 217–291 | 5.3 | 306–349 | ||
Note: Per. = Percentage, Rg. = Ranges.