Table 1.

Descriptive statistics of air pollutants and meteorological variables.

	PM 2.5	PM 10	O3	Pressure	RH	Temperature	Wind
count	170	170	170	170	170	170	170
mean	14.68	42.48	0.05	961.57	61.08	56.06	5.11
std	7.55	28.2	0.01	26.7	17.56	7.1	2.13
min	4	4	0.03	921.04	21.38	36.07	1.48
25%	9.18	25.25	0.04	930.59	47.64	51.32	3.96
50%	13.4	37	0.05	980.35	65.15	55.02	5.18
75%	17	55	0.06	984.42	76.2	59.36	6.01
max	48	213	0.08	991.04	91.25	81.33	12.55