Ground based in situ observations of bulk_sampler at Lahemaa (EE0009R). These measurements are gathered as a part of the following projects HELCOM, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: acidity in precip (mass_concentration_of_acidity_in_precipitation), ammonium in precip (mass_concentration_of_ammonium_in_precipitation), potassium in precip (mass_concentration_of_potassium_in_precipitation), sodium in precip (mass_concentration_of_sodium_in_precipitation)