Table 3

Geometric mean outdoor and indoor PM2.5 levels (μg/m3) in venues with different smoking policies

Complete bansPartial bansNo bansTotal
nPM2.5 levelnPM2.5 levelnPM2.5 levelnPM2.5 level
OutdoorIndoorOutdoorIndoorOutdoorIndoorOutdoorIndoor
Beijing7120102289937612624885124225
Wuhan264544465573471697948155
Xi'an816313011461597219436181190323
Kunming32619232162743294793290
Guiyang3110106077741638075160
Total2310385956893727718740478176