Table 3 Description of Distributions of Monthly Levels of PM10

Years	Months												Mean	SD	Min	Max
	1	2	3	4	5	6	7	8	9	10	11	12
2010	57	49	64	51	59	52	36	36	32	45	73	63	51.42	12.60	32	73
2011	45	72	65	59	75	49	34	32	33	46	46	50	50.50	14.58	32	75
2012	57	51	51	54	58	41	33	27	33	40	48	43	44.67	10.14	27	58
2013	64	49	62	54	60	46	38	40	33	36	46	54	48.50	10.48	33	64
2014	62	57	58	58	67	45	41	32	34	38	47	44	48.58	11.52	32	67
2015	52	75	68	47	50	43	34	37	30	48	36	50	47.50	13.35	30	75
2016	50	47	60	67	54	42	30	34	37	39	53	48	46.75	10.91	30	67
2017	52	47	52	57	62	42	35	26	37	-	-	-	45.56	11.54	26	62

*AC = Average rate of change of PM10 concentration change from 2010 to 2017 of study period is –1.75%