Monitoring data at three sites in Ibaraki prefecture [14; 00 July 25, 2011]
4-3-2-4 Radiation survey of environment
Reading of environmental radioactivity level by prefecture [19; 00 March 28, 2011]
Reading of environmental radioactivity level by prefecture [13; 00 March 29, 2011]
Reading of environmental radioactivity level by prefecture [19; 00 March 29, 2011]