| Regression coefficient | Standard error | t value | p value |
Intercept | −1.324 × 10−15 | 3.788 × 10−2 | 0 | 1 |
Length of train lines | 0.4182 | 8.025 × 10−2 | 5.211 | 2.67 × 10−7 |
Length of through service sections | 0.1261 | 6.239 × 10−2 | 2.021 | 0.043741 |
Number of transported passengers per hour during peak hours | 0.1147 | 4.530 × 10−2 | 2.532 | 0.011635 |
Number of stations | −0.2328 | 6.063 × 10−2 | −3.840 | 0.000138 |