"For Scientific purposes, access to these data is unlimited and provided without charge. By their use you accept that an offer of co-authorship will be made through personal contact with the data providers or owners whenever substantial use is made of their data. In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."

Australian Nuclear Science and Technology Organisation, German Meteorological Service, Meteorological Research Institute, National Physical Laboratory, University of Malta,

Alastair Williams (ANSTO), Alfred Micallef (UMLT), Axel Dalheimer (DWD), Chris Rennick (NPL), Dafina Kikaj (NPL), Dagmar Kubistin (DWD), Edward Chung (NPL), Emmal Safi (NPL), Kazuhiro Tsuboi (MRI), Kentaro ISHIJIMA (MRI), Martin Saliba (UMLT), Marvic Grima (UMLT), Robert Holla (DWD), Scott Chambers (ANSTO), WDCGG; All ²²²Rn data contributed to WDCGG by GAW stations and mobiles by 2025-09-10, (Reference date^*: YYYY/MM/DD)

* As the reference date, please indicate the date you downloaded the files.