non-GTS radiosounding data from Switzerland for 2007, data have been provided by Meteo Swiss, data have been processed at the Department of Meteorology and Geophysics, University of Vienna,
non-GTS radiosounding data from the Czech Republic for 2007, data have been provided by CHMI, data have been processed at the Department of Meteorology and Geophysics, University of Vienna,
non-GTS radiosounding data from Germany for 2007, data are provided by the German Weather Service data have been processed at the Department of Meteorology and Geophysics, University of Vienna,
non-GTS radiosounding data from Slovakia for 2007, data are provided by SHMU, data have been processed at the Department of Meteorology and Geophysics, University of Vienna, no data quality