| Rational distance D+ | Negative distance D− | Relative proximity C | Rank |
Qinghai | 5208.732 | 1.871 | 0.000 | 9 |
Sichuan | 1834.509 | 3378.626 | 0.648 | 3 |
Gansu | 4763.471 | 447.873 | 0.086 | 7 |
Ningxi | 5140.789 | 68.727 | 0.013 | 8 |
Inner Mongolia | 4137.799 | 1074.104 | 0.206 | 6 |
Shaanxi | 3482.264 | 1753.008 | 0.335 | 4 |
Shanxi | 4122.157 | 1088.268 | 0.209 | 5 |
Henan | 1384.871 | 3848.761 | 0.735 | 2 |
Shandong | 89.726 | 5207.111 | 0.983 | 1 |