Fig. 5: Illustrated types of postcards produced for awareness campaign and data collection.
From: Light painting photography makes particulate matter air pollution visible

a Depicts the level of air pollution on Airport Road, Addis Ababa, Ethiopia, recording PM2.5 levels of 10–20 μg m-3; b Depicts the level of air pollution of biomass burning in a commercial kitchen at the University of Addis Ababa, Ethiopia, recording PM2.5 levels of 150–200 μg m-3; c Depicts level of air pollution in an open area; d Depicts level of air pollution at a bus station in Addis Ababa, Ethiopia; e Depicts level of air pollution during a traditional Ethiopian coffee ceremony; f Example of back of postcard with student’s statements.