升温等级 | 春 | 夏 | 秋 | 冬 | 年 | |
I级(弱) | 频数/次 | 892 | 1076 | 1122.5 | 1162.5 | 4253 |
比重/% | 21.0% | 25.3% | 26.4% | 27.3% | 100% | |
II级(中等) | 频数/次 | 136.5 | 48 | 59 | 68.5 | 312 |
比重/% | 43.8% | 15.4% | 18.9% | 21.9% | 100% | |
IV级(强) | 频数/次 | 34 | 6 | 12 | 49 | 101 |
比重/% | 33.7% | 5.9% | 11.9% | 48.5% | 100% | |
V级(极强) | 频数/次 | 36 | 5.5 | 14 | 24.5 | 80 |
比重/% | 45% | 6.9% | 17.5% | 30.6% | 100% | |
I~V级 | 频数/次 | 1098.5 | 1135.5 | 1207.5 | 1304.5 | 4746 |
比重/% | 23.2% | 23.9% | 25.4% | 27.5% | 100% |