If the data is passed on to third parties, this information must also be provided. In the case of use or publication, the information below must be included or published. Within the framework of ElbeXtreme, (https://www.marextreme.de/en/elbextreme, Monitoring and Modelling of extreme events in the Elbe estuary and German Bights) heatwaves in the tidal Elbe were analysed with regard to marine and fluvial heatwaves from 1988 to 2023. The stations have been selected according to the criteria of high data availability to meet the statistical analysis needs. DATA COMPILERData Compiler of this data set: Bundesamt für Seeschifffahrt und Hydrographie (BSH)Author: Kaveh Purkiani, BSHData license: Creative Commons Attribution 4.0 InternationalLegals: https://www.bsh.de/DE/Service/Impressum/impressum_node.htmlFunding: This data compilation was supported by grant no. 03F0954L from the Federal Ministry of Education and Research (BMBF) as part of the DAM mission mareXtreme, ElbeXtreme project. --------------------------------------------------------------------------------DATA QUALITY CONTROLLEROperational data quality controller: no information availableLicense of data controller: - --------------------------------------------------------------------------------DATA PROVIDERThe data provided by WSV is open and free to use. See the following urls for more information:Data distributor: Generaldirektion Wasserstraßen und SchifffahrtLicense of data distributor:Overview: https://www.pegelonline.wsv.de/webservice/ueberblickTerms of use: https://www.pegelonline.wsv.de/gast/nutzungsbedingungenPrivacy policy: https://www.pegelonline.wsv.de/gast/datenschutzhinweiseLegals: https://www.pegelonline.wsv.de/gast/impressum --------------------------------------------------------------------------------DATA ORIGINATORSsee data headers --------------------------------------------------------------------------------DATA FORMATdata files are ASCII files *.txt in UTF8, *.csv (ANSI)see data headers