"Klimamittelwerte 1991–2020" (in German). Central Institute for Meteorology and Geodynamics. Archived from the original on 5 June 2023. Retrieved 11 April 2023.
"Klimamittelwerte 1991–2020" (in German). Central Institute for Meteorology and Geodynamics. Archived from the original on 5 June 2023. Retrieved 11 April 2023.