| 变量名 | 个数 | 平均值 | 标准差 | 最小值 | 最大值 |
| FDI | 2370 | 85955.82 | 200,000 | 16 | 3,080,000 |
| year | 2403 | 2012 | 2.583 | 2008 | 2016 |
| dt | 2403 | 0.228 | 0.42 | 0 | 1 |
| du | 2403 | 0.371 | 0.483 | 0 | 1 |
| du × dt | 2403 | 0.249 | 0.476 | 0 | 1 |
| gov | 2403 | 18564.5 | 40946.38 | 446.73 | 641,000 |
| sci | 2402 | 73021.7 | 244000 | 662 | 4,040,000 |
| GDP | 2403 | 1998.86 | 2660.099 | 0 | 28,180 |
| popu | 2402 | 456.394 | 314.688 | 29.97 | 3392 |
| area | 2402 | 16430.47 | 22489.59 | 1113 | 253,000 |
| highwayvol | 2396 | 9577.949 | 15486.22 | 93 | 196,000 |
| fix_p | 2402 | 30668.81 | 23763.81 | 0 | 219,000 |
| tea_p | 2402 | 39.05 | 8.456 | 0 | 132.41 |
| posip | 2403 | 45.643 | 13.726 | 8.62 | 84.4 |
| potip | 2402 | 53.99 | 120.188 | 9.91 | 5909 |