	(1)	(2)	(3)
VARIABLES	shebao_null	shebao_not	shebao_zero
			
tme	-0.0047***	-0.0335***	0.0288***
	(0.0013)	(0.0013)	(0.0011)
			
Observations	1,450,390	1,450,390	1,450,390
R-squared	0.5801	0.4450	0.4214
Robust standard errors in parentheses			
*** p<0.01, ** p<0.05, * p<0.1			
