text: Observed percentage decrease in PM2.5 during lockdowns based on literature (y-axis) compared to the Emissions Database for Global Atmospheric Research inventory percentage decrease in emissions (Forster et al., 2020). The median decrease for each country is shown in gray. Markers indicate the observed median decrease binned for all countries by <20%, 20%–30%, 30%–40%, 40%–50%, and >50%, with the inventory-based medians, colored by the median stringency index. Horizontal and vertical lines indicate the 25th and 75th percentiles of the distribution within each bin. DOI: https://doi.org/10.1525/elementa.2021.00176.f12