Research Article

Carbonaceous Aerosols in Fine Particulate Matter of Santiago Metropolitan Area, Chile

Figure 6

Percentage of days per year from 2002 to 2007 in which the concentration was greater than the threshold of the World Health Organization (WHO), the United States Environmental Protection Agency (EPA), and the Chilean Ministry of the Environment (MMA) standards. Label of the stations in Figure 1. Las Condes: C Label, P. O’Higgins: O Label, and Pudahuel: P Label.
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(a) Las Condes
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(b) P. O’Higgins
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(c) Pudahuel