| 2021 1 10 | 88.4% | 1.7 | | 54.9% | 24.5 | 30.4% | 6.6 12 | | 99.3% 97.4% | 96.0% 94.4% 90.8% | 87.8% 85.9% 83.5% | 83.2% 82.6% 81.9% | 78.3% PM2.5 | 22 / 18.5% | 12 PM2.5 | 9 / | 17 / 20 / | 21 / 22 | / 23 / | 23 / 24 / | 25 / 25 / | 27 / 28 / | | 12 | | | |