	(1)	(2)	(3)	(4)	(5)	(6)
VARIABLES	spm	so2	no2	spm	so2	no2
						
				(.)		
Observations	11	11	11	19	19	19
5-Year Effect	-54.07*	-9.15*	-6.48	-30.02	-14.9***	-3.19
p-value	[.09]	[.08]	[.27]	[.17]	[00]	[.32]
Standard errors in parentheses						
*** p<0.01, ** p<0.05, * p<0.1						
