| 指标 | GM (1, 1)模型 | GM (2, 1)模型 | 邓聚龙参数估计模型 |
| a | −0.07 | 10,598.0629 | -0.1004 |
| b | 193.57 | −1285.3065 | 2383.5514 |
| C1 | - | 124.0481 | - |
| C2 | - | 1791.9519 | - |
| R2 | 0.9950 | 0.975 | 0.9473 |
| RMSE | 413.04 | 722.3975 | 863.3962 |
| 2019年真实值 | 12,834.00 | 12,834.00 | 12,834.00 |
| 2019年预测值 | 13,087.62 | 14,083.45 | 12,272.17 |