Table 2.

Spearman's correlation between daily mean air pollutants concentrations and meteorological factors in Chongqing, China.

	PM2.5	PM10	SO2	NO2	O3	CO	TEMP	RH
PM2.5	1.00
PM10	0.96**	1.00
SO2	0.63**	0.69**	1.00
NO2	0.74**	0.78**	0.61**	1.00
O3	−0.32**	−0.20**	−0.15**	−0.24**	1.00
CO	0.71**	0.67**	0.54**	0.64**	−0.49**	1.00
TEMP	−0.45**	−0.35**	−0.26**	−0.40**	0.77**	−0.50**	1.00
RH	0.02	−0.10**	−0.22**	0.02	−0.49**	0.18**	−0.42**	1.00

^**At the 0.01 level (two tailed), the correlation was significant.