Table 4.

Pairwise Pearson correlations coefficients (r) for pollutants and temperature

	PM10	SO2	CO	O3	NO2	NO	NOx
SO2	0.53
CO	0.56	0.59
O3	−0.26	−0.34	−0.56
NO2	0.66	0.56	0.76	−0.62
NO	0.54	0.48	0.87	−0.58	0.73
NOx	0.59	0.56	0.90	−0.62	0.86	0.96
Temperature	−0.08	−0.24	−0.39	0.40	−0.40	−0.38	−0.40