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Table 3 Calibration results of linear function model Eq.(2) for cities with population densities above 1500 per sq. km. R2 = 0.269, sample size N = 88

From: Transport indicator analysis and comparison of 151 urban areas, based on open source data

Calibration results Coef Std Err t P > |t| [95.0% Conf. Int.]
c 45.3582 2.122 21.375 0.000 41.139 49.577
d −0.2386 0.083 −2.880 0.005 −0.403 −0.074
e −0.9706 0.246 −3.950 0.000 −1.459 −0.482