| 2024 6 27 | 2024 | | | 2024 | | | 2024 | | | | | 2020 | | | | | | | | | | | | | | | | | | | | | | | | | | AQI 200 2 | AQI 150 | | AQI | AQI 200 | 4 96 AQI | 500 24 48 | | | | | 2019 - 2023 | | | | | | | | | | | | | | | 1. O3 | | | 2. | A | | B | | | | | | | |