| 再现间隔(年) | 保证率 | 极端最低气温(℃) | 方差 | 标准差 | 有效系数 |
| 2 | 0.5 | -4.4 | 0.0 | 0.1 | 1.0 |
| 5 | 0.8 | −6.5 | 0.1 | 0.4 | 0.9 |
| 10 | 0.9 | −7.9 | 0.3 | 0.5 | 0.9 |
| 20 | 0.95 | −9.2 | 0.4 | 0.7 | 0.9 |
| 50 | 0.98 | −10.9 | 0.7 | 0.8 | 0.8 |
| 100 | 0.99 | −12.1 | 1.0 | 1.0 | 0.8 |
| 200 | 0.995 | −13.4 | 1.3 | 1.1 | 0.8 |
| 500 | 0.998 | −15.1 | 1.8 | 1.3 | 0.8 |
| 1000 | 0.999 | −16.3 | 2.2 | 1.5 | 0.8 |