Fig. 4
Distribution of PM2.5 concentration in seven townships, Yangon, Myanmar. The concentrations of PM2.5 in seven townships (Hlaing, Hlaingthayar, Kamayut, Kyimyindine, Pazundaung, South Okkalapa, and Tamwe) of Yangon City were measured. The investigators walked along the road sides of these areas of the city for three times a day (from 7:00 to 7:15 h, from 13:00 to 13:15 h and from 19:00 to 19:15 h). Each bar represents the mean ± SD