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

Table 3

Pearson correlation analysis of working days and nonworking days.

	Peaks and valleys (n)		R^2	Pearson correlation coefficient	X^2
	Working days	Nonworking days
AQI	6	6	0.5393	25.6236	0.0487
PM2.5	6	6	0.6196	10.7371	0.1511
PM10	6	6	0.6806	37.4787	0.4887
SO2	6	6	0.7398	14.4211	0.3870
CO	6	6	0.8545	43.2376	0.7498	<0.01
NO2	6	6	0.8551	27.3636	0.0950	<0.05
O3_8h	6	6	0.9441	54.6304	0.7625	>0.05