Fig. 1From: Association of PM2.5 concentration with health center outpatient visits for respiratory diseases of children under 5 years old in Lima, PeruModeling of PM2.5 maximum concentration daily in Lima province, Peru, 2011–2015. = MINAM Air Quality Guidelines 24 h standard (50 μg/m3) — = WHO Air Quality Guidelines 24 h standard (25 μg/m3) and MINAM Air Quality Guidelines annual (25 μg/m3) =WHO Air Quality Guidelines annual (10 μg/m3) Units on x axis are weekly concentration of PM2.5 (μg/m3)Back to article page