|
|
| SO2 | NO2 | CO | O3 | PM10 | PM2.5 |
| 优良 (1~100) | 小雪 | b | b | b | a | b | b |
| 中 | b | b | ab | a | a | a | |
| 大 | b | a | ab | a | a |
| |
| 暴 | a | b | a | a | a |
| |
| 轻中 (101~200) | 小雪 |
|
|
|
| b | c |
| 中 |
|
|
|
| a | b | |
| 大 |
|
|
|
|
| a | |
| 暴 |
|
|
|
| b | b | |
| 重度 (201~300) | 小雪 |
|
|
|
|
|
|
| 中 |
|
|
|
|
|
| |
| 大 |
|
|
|
| a | a | |
| 暴 |
|
|
|
|
|
|