Ground based in situ observations of wet_only_sampler at Waldhof (DE0002R). These measurements are gathered as a part of the following projects EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: mercury in precip (mass_concentration_of_mercury_in_precipitation), antimony in precip (mass_concentration_of_antimony_in_precipitation), arsenic in precip (mass_concentration_of_arsenic_in_precipitation), cadmium in precip (mass_concentration_of_cadmium_in_precipitation), chromium in precip (mass_concentration_of_chromium_in_precipitation), cobalt in precip (mass_concentration_of_cobalt_in_precipitation), copper in precip (mass_concentration_of_copper_in_precipitation), iron in precip (mass_concentration_of_iron_in_precipitation), lead in precip (mass_concentration_of_lead_in_precipitation), manganese in precip (mass_concentration_of_manganese_in_precipitation), nickel in precip (mass_concentration_of_nickel_in_precipitation), thallium in precip (mass_concentration_of_thallium_in_precipitation), vanadium in precip (mass_concentration_of_vanadium_in_precipitation), zinc in precip (mass_concentration_of_zinc_in_precipitation)