| 组分 | 特征值 | 贡献率 | 累计贡献率 |
| 1 | 2.710 | 33.881 | 33.981 |
| 2 | 1.837 | 22.958 | 56.839 |
| 3 | 1.224 | 15.294 | 72.134 |
| 4 | 0.955 | 11.931 | 84.065 |
| 5 | 0.514 | 6.423 | 90.488 |
| 6 | 0.490 | 6.120 | 96.608 |
| 7 | 0.271 | 3.392 | 100.000 |