Ground based in situ observations of bulk_sampler at Ulborg (DK0031R). These measurements are gathered as a part of the following projects CAMP, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: chromium in precip (mass_concentration_of_chromium_in_precipitation), copper in precip (mass_concentration_of_copper_in_precipitation), nickel in precip (mass_concentration_of_nickel_in_precipitation), zinc in precip (mass_concentration_of_zinc_in_precipitation)