6 1 | | | 2021 | | | | 2021 | PM2.5 | 35 / | 10.3% | O3 | | | 84.6% 1. | 8 | 10 | | 146 41 | 321 | Ⅰ ~ Ⅲ | 77.3% | 2.7 | Ⅰ ~ Ⅲ | 77.3% 2.7 | V | 0.3 | | | | 93.4% | | 2021 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |