Multiple‐Factor Influence on Air Quality of Road Motor Vehicles Tail Number Limit in Administrative Area of Beijing, China

Table 4

Pearson correlation analysis of restricted working days and nonrestricted working days.

	Peaks and valleys (n)		R^2	Pearson correlation coefficient	X^2
	Restricted working days	Nonrestricted working days
AQI	6	6	0.6693	19.0372	0.5319	>0.05
PM2.5	6	6	0.4839	27.1479	0.0193	<0.05
PM10	6	6	0.7578	41.6706	0.0977	>0.05
SO2	6	6	0.8213	33.7825	0.5403	<0.05
CO	6	6	0.4631	27.3546	0.7999	<0.05
NO2	6	6	0.7170	43.5918	0.4048	>0.05
O3_8h	6	6	0.5894	32.3794	0.5447	>0.05