PM_2.5/PM₁₀ Ratios in Eight Economic Regions and Their Relationship with Meteorology in China

Table 4

The skewness of AQI and Spearman correlation coefficients between the PM_2.5/PM₁₀ ratio and AQI.

	NR	NCA	ECA	SCA	MYR	MRYR	SC	BNC
AQI skewness	2.142	1.833	1.574	1.549	1.972	1.753	2.245	3.038
Coefficients	0.467	0.388	0.200	0.441	0.376	0.284	0.347	0.068

Note. All Spearman correlation coefficients were significant at the 0.01 level (2-tailed).