Air pollutants		Area						T-Test
Air pollutants		Urban			Rural			T	p-value
PM10	Range	269	−	275	202	−	212	166.687	<0.001*
PM10	Mean ± SD	270.690	±	2.343	207.430	±	2.986	166.687	<0.001*
Lead	Range	0.20	−	0.24	0.02	−	0.03	68.368	<0.001*
Lead	Mean ± SD	0.209	±	0.027	0.024	±	0.005	68.368	<0.001*
Co	Range	16	−	19	6	−	10	47.189	<0.001*
Co	Mean ± SD	17.320	±	1.497	8.380	±	1.162	47.189	<0.001*
No	Range	4.9	−	5.1	0	−	0.2	375.824	<0.001*
No	Mean ± SD	5.001	±	0.100	0.048	±	0.086	375.824	<0.001*