Research on the Impact of Environmental Regulation on Total Factor Energy Effect of Logistics Industry from the Perspective of Green Development

Table 2

Descriptive statistics of major variables.

Variable	Mean	Std. dev.	Max	Min
LTFEE	0.439	0.265	2.778	0.030
REG	0.979	0.349	3.702	0.234
INV	192.460	137.380	1416.200	0.200
HUC	7.616	1.375	13.259	0.944
LDL	0.131	0.048	1.393	0.003
EDL	36867.802	18529.027	128994.000	4317.000
URB	51.793	11.104	89.600	20.520
OPEN	0.376	0.357	6.569	0.008
STR	0.431	0.063	0.806	0.297
IEN	37.269	20.518	264.995	3.466