| 变量 | 个数 | 均值 | 标准差 | 最小值 | 最大值 |
| ID | 1088 | 454,082 | 231,164 | 2028 | 688,366 |
| DT | 1088 | 1.100 | 0.797 | 0.00596 | 2.646 |
| SER_income | 488 | 0.109 | 0.189 | 0 | 0.997 |
| Ser | 1088 | 0.551 | 0.498 | 0 | 1 |
| OC | 1088 | 55.50 | 0.850 | 54.51 | 56.88 |
| RD | 1088 | 0.0455 | 0.00751 | 0.0371 | 0.0593 |
| T_A | 1088 | 22.03 | 0.0776 | 21.91 | 22.19 |
| LEV | 1088 | 0.374 | 0.0151 | 0.352 | 0.393 |