| Regression coefficient | Standard error | t value | p value |
Intercept | −7.301 × 10−15 | 1.569 × 10−2 | 0 | 1 |
Length of train lines | 0.1310 | 3.038 × 10−2 | 4.313 | 1.66 × 10−5 |
Number of connecting operation stations | 8.809 × 10−2 | 2.822 × 10−2 | 3.121 | 0.00182 |
Length of lines with connecting operation | 7.644 × 10−2 | 3.547 × 10−2 | 2.155 | 0.03125 |
Number of operating trains per hour during peak hours | −0.1066 | 2.727 × 10−2 | −3.908 | 9.49 × 10−5 |
Number of transported passengers per hour during peak hours | 0.1809 | 2.828 × 10−2 | 6.396 | 1.80 × 10−10 |
Number of trains according to type | −8.957 × 10−2 | 2.541 × 10−2 | −3.524 | 0.00043 |
Average number of tracks | 3.357 × 10−2 | 1.916 × 10−2 | 1.752 | 0.07986 |
Number of connecting operation stations | −0.1422 | 4.499 × 10−2 | −3.160 | 0.00159 |
Length of lines with connecting operation | 0.2248 | 4.564 × 10−2 | 4.926 | 8.77 × 10−7 |