Fig. 10From: How do taxi drivers expose to fine particulate matter (PM2.5) in a Chinese megacity: a rapid assessment incorporating with satellite-derived information and urban mobility dataHotspots of taxi drivers with high and low PM2.5 exposure on weekdays and weekends. As shown in a–d, where the dark red depicts the high-density areas, the high-density areas could correspond to the pollution hotspotsBack to article page