| 2021 1 8 | 85.9% 2.7 | 55. | 6% 29.8 | 29.6% 4.1 | 12 | 99.2% 96.7% 95.0% 93. | 0% 88.5% 85.2% 82.7% 79.8% | 79.0% 78.6% 78.2% 74.5% | | PM2.5 23 / 20. | 7% 12 PM2.5 | 10 / 17 / 20 | / 22 / 22 / | 24 / 24 / 25 | / 25 / 27 / | 29 / 29 / | 12 | | | | |