(1)	(2)	(3)	(4)	(5)	(6)
L.lSO2Intensity	0.98627***	1.08794***	0.93657***	1.00252***	1.04655***	1.03092***
	(0.009)	(0.012)	(0.026)	(0.009)	(0.012)	(0.012)
lnTI			-0.04203***			0.25508***
			(0.009)			(0.072)
lnECS1	0.02678	0.12826***	0.26173*
	(0.019)	(0.024)	(0.137)
lnECS1\(\times\)lnTI			-0.02937
			(0.031)
lnECS2				0.01322	0.09012***	0.06666***
				(0.012)	(0.015)	(0.017)
lnECS2\(\times\)lnTI						-0.03973***
						(0.010)
w\(*\)lnECS1	3.73411***	3.47880***	0.87033***
	(0.136)	(0.138)	(0.167)
w\(*\)(lnECS1\(\times\)lnTI)			0.01058
			(0.020)
w\(*\)lnECS2				0.59460***	0.61541***	1.22485***
				(0.079)	(0.080)	(0.090)
w\(*\)(lnECS2\(\times\)lnTI)						0.17680***
						(0.012)
Control variables	Yes	Yes	Yes	Yes	Yes	Yes
\[\rho\]	0.25301***	0.09968**	0.49091***	0.17074***	0.10400*	0.19858***
	(0.043)	(0.048)	(0.036)	(0.061)	(0.062)	(0.064)
Sigma2_e	0.01482***	0.01410***	0.01616***	0.01419***	0.01396***	0.01360***
	(0.001)	(0.001)	(0.001)	(0.001)	(0.001)	(0.001)
Obs.	480	480	480	480	480	480
R-squared	0.92917	0.92222	0.71029	0.94856	0.93289	0.89861
L-ratio	348.71161	359.34358	319.93660	357.38154	361.07513	367.35291