| 地面风速(m/s) | 太阳辐射等级 | |||||
| +3 | +2 | +1 | 0 | −1 | −2 | |
| ≤1.9 | A | A~B | B | D | E | F |
| 2~2.9 | A~B | B | C | D | E | F |
| 3~4.9 | B | B~C | C | D | D | E |
| 5~5.9 | C | C~D | D | D | D | D |
| ≥6 | D | D | D | D | D | D |