Table 5.

Results correlation coefficient analysis. Values highlighted in green indicate positive correlation, while values highlighted in yellow represent negative correlation.

Variables	Periods	PM2.5	PM10	SO2	NO2	CO	O3
Temp	Pre-LD	0.553	0.656	0.371	0.443	0.502	−0.199
	During-LD	0.170	0.445	0.756	0.496	0.557	0.474
	Post-LD	−0.153	−0.129	−0.377	−0.264	0.191	−0.077
WS	Pre-LD	−0.193	−0.075	0.113	−0.119	0.575	0.391
	During-LD	−0.02	0.101	0.166	−0.035	0.345	−0.012
	Post-LD	−0.061	−0.108	0.013	−0.390	0.099	−0.011
RH	Pre-LD	−0.193	−0.211	−0.538	−0.269	0.049	−0.400
	During-LD	−0.385	−0.581	−0.594	−0.572	−0.086	−0.750
	Post-LD	−0.446	−0.630	−0.685	−0.402	0.032	−0.423