| 组别 | 平均值 | 标准差 | CRE |
| 1 | 7.942 | 0.25514 | 0.000856 |
| 2 | 9.1665 | 0.362332 | 0.001023 |
| 3 | 10.534333 | 0.491367 | 0.001696 |
| 4 | 9.0878333 | 0.673325 | 0.002053 |
| 5 | 8.6088333 | 0.214477 | 0.000643 |
| 6 | 9.3696667 | 0.638645 | 0.001987 |
| 7 | 7.4008333 | 0.96352 | 0.002661 |
| 8 | 5.83 | 0.365434 | 0.001049 |
| 9 | 4.8816667 | 0.360391 | 0.000845 |
| 10 | 5.3373333 | 0.231135 | 0.000909 |
| 11 | 5.2951667 | 0.093183 | 0.00032 |
| 12 | 5.272 | 0.185963 | 0.000653 |
| 13 | 5.963667 | 0.228265 | 0.000559 |
| 14 | 5.521333 | 0.232689 | 0.000594 |
| 15 | 4.925833 | 0.091989 | 0.000273 |