Fig. 2From: Urban population exposure to air pollution in Europe over the last decadesMinimum and maximum percentage of EU-28 population (in %) exposed to air pollutants concentrations (particulate matter PM2.5 and PM10, nitrogen dioxides NO2 and tropospheric ozone O3) exceeding the European Union limit or target values between 2000 and 2017 (see Additional file 1: Table S2; data source: [22,23,24,25,26,27,28,29,30,31,32]Back to article page