Emission Reduction Effect and Mechanism of Auto-Purchase Tax Preference

Table 5

Quantile regression results of purchase tax incentives on wastewater emissions.

	(1)	(2)	(3)	(4)
	20%	40%	60%	80%
	LnWater	LnWater	LnWater	LnWater
Time	−0.422	−0.415	−0.339	−0.296
	(−6.27)	(−7.25)	(−7.67)	(−5.83)
Constant	7.647	8.281	8.726	9.250
	(221.45)	(282.26)	(385.35)	(355.29)
Obs	3095	3095	3095	3095

Note: t statistics are in parentheses. ^∗< 0.10, ^∗∗< 0.05, and ^∗∗∗< 0.01.