This data was created based on dust radioactivity concentration measurements within 20 km radius of TEPCO Fukushima Dai-ichi NPP, available in the Monitoring Information of Environmental Ra...
  1. This data was created based on dust radioactivity concentration measurements within 20 km radius of TEPCO Fukushima Dai-ichi NPP, available in the Monitoring Information of Environmental Radioactivity Level, the portal site run by Nuclear Regulation Authority.
  2. The measurement results have been released since April 2011 and subsequent results are continuously released.
Publicly available data collected from the website of the relevant organizations and converted into CSV, XML, and KML formats that were easy to use

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