2024 7 | | 2024 | | | | | | | | | | | | 2024 2 | | | 2020 25 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AQI | > 200 48 | | | AQI> 200 AQI> 150 48 | | | AQI | > 200 3 72 | | AQI> 200 48 | AQI> 150 72 | | AQI | > 200 4 96 | AQI 2 48 | AQI 500 | AQI > 200 | 72 AQI > | 300 24 | 24 48 | | | | | | | | | | | | | | | | | | | 1. | | VOCs | NOx | 2. | | A | | | B | | | | | | | | | | | |