Emission Reduction Effect and Mechanism of Auto-Purchase Tax Preference

Table 6

Quantile regression results of purchase tax incentives on soot emissions.

	(1)	(2)	(3)	(4)
	20%	40%	60%	80%
	LnSoot	LnSoot	LnSoot	LnSoot
Time	−0.282	−0.235	−0.122	0.0433
	(−3.46)	(−4.20)	(−2.25)	(0.82)
Constant	8.993	9.636	10.09	10.61
	(213.09)	(332.20)	(359.75)	(389.88)
Obs	3041	3041	3041	3041

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