Figure 3
From: Population exposure to hazardous air quality due to the 2015 fires in Equatorial Asia
Contribution of fires to PM2.5.
(a) Mean [PM2.5] in μg m−3 during September-October. The white shading indicates areas with concentrations corresponding to the WHO air quality guidelines for 24-hr [PM2.5] (i.e. 25 μg m−3)28, the blue shading refers to values below the limit and the red shading to concentrations above that limit. (b) 
, factor increase of [PM2.5] due to fires relative to background concentrations from other sources. PMF and PMNF are mean [PM2.5] concentrations during September-October of the run with fires and the one without fire emissions, respectively. Maps created using Matlab vR2014b mapping toolbox http://www.mathworks.com/products/matlab/.
