Solargis releases annual and monthly difference maps for free - Global Solar Council
Fișier:SolarGIS-Solar-map-Europe-en.png - Wikipedia
New data on the radiation map of Poland - National Atomic Energy Agency - Gov.pl website
SoDa Solar Radiation Data - [Solar radiation maps] [free] [CAMS] [Europe "AGATE"] Dear users, feel free to exploit these monthly and yearly average maps over Europe: http://www.soda-pro.com/help/cams-services/cams-radiation-service/download-europe ...
World solar radiation map | Download Scientific Diagram
Free use of Map of Soil Radioactivity at the time of the Tokyo Olympics | 注目記事 | Blog | Minna-no Data Site
Digital Atlas
Mapping radiation in Japan
Digital Atlas
Wetter und Klima - Deutscher Wetterdienst - Our services - Global radiation (mean 30-year monthly and annual sums)