Air pollution: ten cities with the biggest drops
Change in concentration of PM10 particles (mg/cubic metre), 2014–16
Rajshahi, Bangladesh (67.2% decrease)
Ahvaz, Iran (27.8)
Amman, Jordan (46.8)
Tezpur, India (84.1)
Delhi, India (19.9)
Mexico City, Mexico (54.8)
Panzhihua, China (51)
Panaji, India (42.2)
Yan'an, China (39.3)
Igdir, Turkey (34.8)
-120
-100
-80
-60
-40
-20
0