Table 2.

Correlation coefficients between variables in the study.

Pollutant	Season	PM2.5	PM2.5–10	CO	O3
PM2.5		Overall
		Nov–May
		Jun–Oct
PM2.5–10		Overall		0.273
		Nov–May		0.229
		Jun–Oct		0.475
CO		Overall		0.522		0.126
		Nov–May		0.515		0.031
		Jun–Oct		0.546		0.239
O3		Overall		0.209		0.387		–0.192
		Nov–May		0.187		0.478		–0.259
		Jun–Oct		0.287		0.293		–0.003
Temperature		Overall		0.050		–0.003		–0.257		0.435
		Nov–May		0.079		0.244		–0.172		0.441
		Jun–Oct		0.260		0.177		0.036		0.663
Relative humidity		Overall		–0.006		–0.418		0.278		–0.729
		Nov–May		–0.055		–0.569		0.248		–0.777
		Jun–Oct		0.054		–0.212		0.251		–0.630