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. 2022 Apr 15;101:103349. doi: 10.1016/j.jtrangeo.2022.103349

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Fig. 6 — a) Long-term PM_2.5 concentrations (μg/m³), b) passenger kilometers traveled in public transport (1000 pkt/day/region), c) income (Brazil Real/inhabitant/month), d) urban density (inhabitants/km²), e) overall mobility (1000 pkt/day/km²), f) COVID-19 deaths in São Paulo during the period 17th March 2020 – 29th April 2021 (total deaths/1000 inhabitants/region). Notes: ranges for each level of the variables are presented in the legend of the graph according to statistical quintiles. Dots in Fig. 6a represent the locations of the representative CETESB's stations with appropriate long-term air quality data.