Fig. 6

Annual PM10 concentration in Ahvaz during 2008–2019. The blue color and horizontal line show the limits for annual average PM10 concentration (20 μg m−3, following the 2005 Air Quality WHO guideline).
Annual PM10 concentration in Ahvaz during 2008–2019. The blue color and horizontal line show the limits for annual average PM10 concentration (20 μg m−3, following the 2005 Air Quality WHO guideline).