Ground based in situ observations of wet_only_sampler at Pedersker (DK0020R). 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: nitrate in precip (mass_concentration_of_nitrate_in_precipitation), sodium in precip (mass_concentration_of_sodium_in_precipitation)