Table 2.

Parameters of the measurement models for the carbon dioxide emission factors.

i	ai	mi	bi	ni	ci	Goodness-of-Fit (R2)
1	91.392	−0.006	370.847	0.065	−182.513	0.844
2	56.662	−0.001	2.652	3.265	170.788	0.935
3	27.147	−0.001	0.031	8.078	190.875	0.885
4	56.157	−0.003	0.299	5.531	194.583	0.940
5	56.877	−0.002	13.085	2.386	155.344	0.868
6	69.446	−0.003	2.678	3.384	175.643	0.916
7	315.853	−0.009	1.013	4.272	187.509	0.915
8	43.001	−0.005	0.494	4.587	199.162	0.801
9	122.963	−0.000171	0.131	5.707	92.471	0.951
10	141.137	−0.011	0.014	6.922	196.101	0.866
11	25.234	−0.005	1.629	1.735	194.891	0.831
12	104.659	−0.000148	0.047	7.812	106.460	0.975

a_i, m_i, b_i, n_i, and c_i are the parameters of the ith measurement model for the ith type of road network.