| ΔE的组别 | 个案数 | 平均值 ± 标准差 |
| 浸泡2 d | 15 | 1.375 ± 0.695 |
| 浸泡4 d | 15 | 2.072 ± 0.906 |
| 浸泡6 d | 15 | 2.282 ± 1.061 |
| 浸泡8 d | 15 | 2.557 ± 1.855 |
| 浸泡10 d | 15 | 3.012 ± 2.118 |
| 浸泡12 d | 15 | 3.005 ± 2.188 |
| 浸泡14 d | 15 | 3.079 ± 2.116 |
| 浸泡21 d | 15 | 3.023 ± 2.168 |
| 浸泡28 d | 15 | 3.399 ± 3.009 |
| 浸泡35 d | 15 | 3.900 ± 3.699 |
| 浸泡42 d | 15 | 3.850 ± 3.616 |
| 浸泡49 d | 15 | 4.328 ± 4.305 |
| 浸泡56 d | 15 | 4.393 ± 4.217 |
| 浸泡63 d | 15 | 4.565 ± 4.332 |
| 总计 | 210 | 3.203 ± 2.923 |