Ground based in situ observations of filter_1pack at Topolniky (SK0007R). 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: arsenic in pm10, cadmium in pm10, chromium in pm10, copper in pm10, lead in pm10, nickel in pm10, pm10_mass in pm10, zinc in pm10