| 序号 |
|
| n |
|
| 1 | 0 | 15% | 3×13 | 0 |
| 2 | 2.4% | 11.5% | 3×13 | 0.4% |
| 3 | 7.2% | 4.6% | 3×3 | 2.3% |
| 4~6 | 5.7% | 9.2% | 3×10 | 1.0% |
| 7~9 | 6.9% | 6.9% | 3×7 | 1.5% |
| 10~18 | 6.3% | 8.5% | 3×9 | 1.2% |
| 19~27 | 6.5% | 7.7% | 3×8 | 1.3% |