5th Survey of Airborne Radiation in Prefectural Schools

According to measurements taken in January and the beginning of February, all school grounds and gardens were under the 1microSievert/hour at 50cm-1m above ground airborne radiation target set by MEXT on August 26th, 2011.In comparison with the results from the previous 4 surveys, a slight reduction in levels can be seen.

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http://www.pref.ibaraki.jp/bukyoku/seikan/kokuko/en/links/schools_new.html