Ground based in situ observations of b-attenuation at Rucava (LV0010R). 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: manganese in pm10 (mass_concentration_of_manganese_in_pm10_in_air), zinc in pm10 (mass_concentration_of_zinc_in_pm10_in_air)