| 2020 1 8 | 88.6% 12 | 100.0% 98.8% | 95.9% 93.4% 93.4% 92.6% | 88.5% 88.1% 81.0% 79.1% | 76.2% 76.2% | 2015 PM2.5 10 | PM2.5 31 / 2015 | 13.9% PM2.5 | 10 / 18 / 22 | / 22 / 24 / | 24 / 27 / 32 / | 36 / 36 / 44 | / 47 / | 6 12 | | | | | | | | | |