Table 4.

Categorization of Ahvaz PM₁₀ data into groups defined in Table 1.

Category	Wind speed (m s−1)	# days	% of total days	PM10 average (µg m−3)	PM10 Std. Deviation
Other	2.64	39	1.8	40.2	7.3
DA	2.00	1372	62.6	130.8	36.6
DS1	2.49	618	28.2	296.9	75.7
DS2	2.89	145	6.6	834.7	316.7
DS3	2.62	15	0.7	2945.4	758.1
DS4	3.94	2	0.1	8700	1838.5