Ground based in situ observations of ozone at Villeneuve d'Ascq (FR0027U) using uv_abs. These measurements are gathered as a part of the following projects CAMP, CAMPAIGN, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ozone in air (mole_fraction_of_ozone_in_air), ozone in air (mass_concentration_of_ozone_in_air)