The radial diffusion coefficients database as we all the ULFwave power spectral density database are created in the frame of the "SafeSpace" project (European Union’s Horizon 2020 research and innovation programme under grant agreement No 870437). The scientific products included in the database are calculated by Dr Christos Katsavrias and Mrs Afroditi Nasi (Project Scientists - PS) under the supervision of Prof Ioannis A. Daglis (Project Manager - PM) at the National and Kapodistrian University of Athens. Users of these products should contact the project scientists before using the data for any presentation and publication or for any questions (email: ckatsavrias@phys.uoa.gr). Users who have included the scientific products of the database in their publication should: 1) include in the Data Availability Statement or the Acknowledgments section the url of the database: https://synergasia.uoa.gr/modules/document/?course=PHYS120 2) acknowledge the SafeSpace project including the corresponding grant agreement No 870437 3) refer to and cite the following article: Katsavrias et al. (2022), The “SafeSpace” database of ULF power spectral density and radial diffusion coefficients: dependencies and application to simulations, Ann. Geophys., 40, 379–393, https://doi.org/10.5194/angeo-40-379-2022.