Fig. 4.
Monthly deviations of bus passenger trips, NOx concentrations, vehicle and truck flows and congested kilometers compared with Covid-19 deaths, bus occupation and isolation rates during the months since the beginning of the epidemic in São Paulo city. Notes: deviations of month i (January 2020 – April 2021) are estimated from 2019 baseline records (deviation monthi = (monthi- monthi,2019)/monthi,2019); red and yellow vertical shaded bars represent the months with some mobility restrictions and reopening of the economic activities, respectively. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)