http://publications.europa.eu/resource/authority/language/ENG Raquel Trillo Zaragoza, Real time air quality observation coverage (O3) TRAFAIR-2020-093 This dataset provides a spatial coverage update every 10 minutes to contain a later estimation of the concentration of O3 pollutant in each point of the city Universidad de Zaragoza 18/06/2020 http://zaguan.unizar.es/record/95716 http://zaguan.unizar.es/record/95716