This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Protectionfactorchernobylcm. The protection factor provided by cm of concrete sheilding where the source is the idealised Chernobyl fallout Note that this image was drawn using data from the OECD report kaeri re kr html the second edition of 'The radiochemical manual' and 'Radiochemistry and Nuclear Chemistry' Image Protectionfactorchernobylcm