Table 2.

Descriptive statistics.

Variables	Mean	Median	Maximum	Minimum	Std.	Prob.
CO2	4.745	4.636	5.887	3.564	0.664	0.016
ECI	6.497	6.547	7.464	5.745	0.358	0.051
URB	4.367	3.956	6.934	2.176	0.437	0.037
ICT	9.536	9.418	9.993	7.956	0.546	0.287
HE	1.795	1.657	3.647	0.297	0.216	0.032
GI	3.767	3.598	5.523	1.546	0.658	0.005