File:Tokyo2011march14-19mext.jpg

Monitoring level of the radioactive contamination due to the Fukushima disaster in Tokyo in 2011 March 14 - March 19 my the data collected by the Ministery of Education, Culture, Sport and Technology, Japan. Figure from http://www.mext.go.jp/component/english/__icsFiles/afieldfile/2011/03/20/1303902_05_1.pdf