Radiation Levels in Ibaraki Prefecture Youth Education Facilities, Recreational Parks, etc (Measurement Results, 6th Survey)

The Prefectural Education Committee conducted the following measurements on airborne radiation levels in prefectural youth education facilities, recreational parks, and other such institutions.
The measurement results for all of the facilities are below the 1micro-sievert per hour at 50cm-1m above ground target stipulated by the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) for school grounds and gardens.

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