Ground based in situ observations of low_vol_sampler at Puy de Dôme (FR0030R). These measurements are gathered as a part of the following projects ACTRIS, EMEP, EUSAAR, GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: elemental_carbon in aerosol (mass_concentration_of_elemental_carbon_expressed_as_carbon_in_dry_aerosol_particles_in _air), elemental_carbon in aerosol (mass_concentration_of_elemental_carbon_expressed_as_carbon_in_dry_aerosol_particles_in _air), organic_carbon in aerosol (mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in _air), organic_carbon in aerosol (mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in _air), total_carbon in aerosol (mass_concentration_of_total_carbon_in_dry_aerosol_particles_in _air), total_carbon in aerosol (mass_concentration_of_total_carbon_in_dry_aerosol_particles_in _air)