This document describes the data set "Current daily degree days according to VDI 3807, sheet 1, for Germany, quality control not yet fully passed", calculated from publicly accessible station data from the DWD Climate Data Center (CDC). The daily degree days for each day of the respective calendar month are listed. The degree days refer to a room temperature of 20 degrees Celsius. Degree days are calculated as the temperature difference between the room temperature and the daily mean temperature (degrees Celsius), but only for days on which the daily mean outside temperature is less than 15 degrees Celsius (heating day). Otherwise the value is zero. The data in the "recent" directory are calculated degree days from current data that have not yet fully passed quality control. Values are only output for those stations for which all daily average air temperature values of the respective month are available. The data comes from DWD stations and partner network stations that are legally and qualitatively equivalent. Further information: https://opendata.dwd.de/climate_environment/CDC/derived_germany/techn/daily/heating_degreedays/hdd_3807/recent/BESCHREIBUNG_derivgermany_techn_daily_heating_degreedays_hdd_3807_recent_de.pdf
