Table 2.
Average concentration of SO2 (μg/m3) from largest to smallest change by city for the years 2015–2019 and 2020. Change indicates the percent change in 2020 with respect to the 2015–2019 mean.
| City | 2015–2019 | 2020 | Change (%) | City | 2015–2019 | 2020 | Change (%) |
|---|---|---|---|---|---|---|---|
| Afyon | 19.6 | 5.0 | −291% | Adıyaman | 9.1 | 8.8 | −3% |
| Ardahan | 16.7 | 5.2 | −222% | Siirt | 15.8 | 15.4 | −3% |
| Kars | 20.7 | 6.8 | −203% | Kırşehir | 10.0 | 9.8 | −3% |
| Denizli | 23.2 | 8.9 | −161% | Şırnak | 35.6 | 35.0 | −2% |
| Yozgat | 28.5 | 12.0 | −137% | Bayburt | 5.9 | 5.8 | −1% |
| Muş | 16.8 | 7.4 | −127% | Çanakkale | 8.8 | 8.7 | −1% |
| Karaman | 12.9 | 5.7 | −126% | Gaziantep | 8.6 | 8.6 | 0% |
| Sinop | 11.8 | 5.5 | −114% | Balıkesir | 6.1 | 6.2 | 0% |
| Tekirdağ | 21.8 | 11.3 | −92% | Kilis | 8.6 | 8.7 | 1% |
| Karabük | 19.7 | 10.6 | −85% | Bartın | 48.1 | 48.7 | 1% |
| Burdur | 10.9 | 6.0 | −82% | Adana | 9.6 | 9.7 | 1% |
| Aydın | 11.4 | 6.4 | −79% | Muğla | 21.7 | 22.9 | 5% |
| Antalya | 5.0 | 2.8 | −75% | Bingöl | 6.8 | 7.3 | 7% |
| Isparta | 12.4 | 7.2 | −71% | Bitlis | 26.4 | 28.7 | 8% |
| Erzurum | 11.6 | 6.9 | −68% | İzmir | 10.1 | 11.2 | 9% |
| Artvin | 8.2 | 5.2 | −57% | Batman | 6.2 | 6.9 | 9% |
| Ankara | 7.1 | 4.7 | −53% | Amasya | 9.0 | 10.1 | 11% |
| Kayseri | 9.1 | 6.3 | −46% | Hatay | 10.1 | 11.6 | 13% |
| Bolu | 13.7 | 9.5 | −44% | Malatya | 9.1 | 10.9 | 16% |
| Kocaeli | 10.5 | 7.3 | −43% | Mardin | 11.7 | 14.7 | 20% |
| Sivas | 20.5 | 14.6 | −41% | Çankırı | 12.4 | 16.0 | 22% |
| Nevşehir | 12.2 | 8.7 | −40% | Niğde | 6.9 | 8.9 | 23% |
| Rize | 4.3 | 3.1 | −39% | Kırklareli | 13.7 | 18.1 | 24% |
| Trabzon | 9.2 | 6.7 | −38% | Van | 14.2 | 19.9 | 29% |
| Konya | 13.0 | 10.0 | −30% | Aksaray | 8.3 | 11.7 | 29% |
| Ağrı | 20.8 | 16.1 | −29% | Sakarya | 11.9 | 18.3 | 35% |
| Iğdır | 10.3 | 8.0 | −28% | Manisa | 12.3 | 19.8 | 38% |
| Gümüşhane | 6.8 | 5.3 | −28% | Tokat | 7.0 | 12.2 | 43% |
| Kırıkkale | 15.8 | 12.6 | −26% | Giresun | 6.6 | 11.5 | 43% |
| Düzce | 7.3 | 5.9 | −23% | Şanlıurfa | 21.2 | 40.0 | 47% |
| Diyarbakır | 7.4 | 6.0 | −23% | Kastamonu | 5.1 | 11.4 | 55% |
| Erzincan | 7.4 | 6.0 | −23% | Yalova | 6.1 | 18.4 | 67% |
| İstanbul | 6.8 | 5.5 | −22% | Ordu | 8.5 | 27.3 | 69% |
| Zonguldak | 15.5 | 12.9 | −20% | Tunceli | 7.1 | 24.5 | 71% |
| Elazığ | 6.7 | 5.7 | −17% | Bursa | 6.0 | 21.6 | 72% |
| Samsun | 17.0 | 14.7 | −16% | Hakkari | 39.6 | 154.2 | 74% |
| Kütahya | 26.7 | 23.5 | −14% | Eskişehir | 5.5 | 0.0 | NA |
| Edirne | 18.7 | 16.6 | −13% | Mersin | 5.2 | 0.0 | NA |
| Çorum | 12.9 | 11.8 | −9% | Osmaniye | 0.0 | 0.0 | NA |
| K.Maras | 20.8 | 19.9 | −5% | Uşak | 10.2 | 0.0 | NA |
| Bilecik | 6.4 | 6.1 | −4% |