Ground based in situ observations of high_vol_sampler at Storhofdi (IS0091R). These measurements are gathered as a part of the following projects AMAP, CAMP, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: aluminium in aerosol (mass_concentration_of_aluminium_in_dry_aerosol_particles_in _air), arsenic in aerosol (mass_concentration_of_arsenic_in_dry_aerosol_particles_in _air), cadmium in aerosol (mass_concentration_of_cadmium_in_dry_aerosol_particles_in _air), chloride in aerosol (mass_concentration_of_chloride_in_dry_aerosol_particles_in _air), chromium in aerosol (mass_concentration_of_chromium_in_dry_aerosol_particles_in _air), cobalt in aerosol (mass_concentration_of_cobalt_in_dry_aerosol_particles_in _air), copper in aerosol (mass_concentration_of_copper_in_dry_aerosol_particles_in _air), iron in aerosol (mass_concentration_of_iron_in_dry_aerosol_particles_in _air), lead in aerosol (mass_concentration_of_lead_in_dry_aerosol_particles_in _air), manganese in aerosol (mass_concentration_of_manganese_in_dry_aerosol_particles_in _air), mercury_PBM in aerosol, nickel in aerosol (mass_concentration_of_nickel_in_dry_aerosol_particles_in _air), nitrate in aerosol (mass_concentration_of_nitrate_expressed_as_nitrogen_in_dry_aerosol_particles_in _air), nitrate in aerosol (mass_concentration_of_nitrate_in_dry_aerosol_particles_in _air), sulphate_total in aerosol (mass_concentration_of_total_sulphateexpressed_as_sulphur_in_dry_aerosol_particles_in_air), sulphate_total in aerosol (mass_concentration_of_total_sulphateexpressed_as_sulphur_in_dry_aerosol_particles_in_air), vanadium in aerosol (mass_concentration_of_vanadium_in_dry_aerosol_particles_in _air), zinc in aerosol (mass_concentration_of_zinc_in_dry_aerosol_particles_in _air)