Reading of environmental radioactivity level by prefecture [19; 00 March 28, 2011] Reading of environmental radioactivity level by prefecture [19; 00 March 28, 2011]
Data source
Japan Disasters Digital Archive (RIJS, Harvard University)
This Archive (JDA) is an online portal to digital materials, designed and maintained by the Reischauer Institute of Japanese Studies at Harvard University. The materials recorded the cascading series ...
Last updated
June 26, 2026