Fig. 3From: Effect of COVID-19-restrictive measures on ambient particulate matter pollution in Yangon, MyanmarAmbient PM concentrations among four periods of three study sites. A PM2.5 concentrations and B PM10 concentrations. Line within the box: median, cross within the box: mean, box: first and third quartile, whiskers: non-outlier range, dots: outliersBack to article page