Table 1.

Descriptive statistics of PM10 and PM2.5 (unit: µg/m³).

Type of Particulate Matter	No. of PAQMSSs	n	Concentration
			Min.	Max.	Mean	SD	Variance
PM10	123	180,072	14.75	62.32	31.89	5.40	54.71
PM2.5	123	180,072	8.71	32.68	16.72	3.85	27.75