Readings of radioactivity concentration of nuclides in the air and the soil inside of the 20 km zone of Fukushima Daiichi Nuclear Power Plant [April 2 and 18, 2011]
4-3-2-4 Radiation survey of environment
Readings of radioactivity concentration in the soil inside of the 20 km zone of Fukushima Daiichi Nuclear Power Plant [April 29-30 and May 1, 2011]
Readings of radioactivity concentration in the soil inside of the 20 km zone of Fukushima Daiichi Nuclear Power Plant [April 29-30 and May 1, 2011]（strontium)
Readings of radioactivity concentration in the soil inside of the 20 km zone of Fukushima Daiichi Nuclear Power Plant [April 29-30 and May 1, 2011]（Am, Cm)
Readings of air dose rates inside of the 20km zone of Fukushima Daiichi Nuclear Power Plant [April 18-19, 2011]
Readings of air dose rates inside of the 20km zone of Fukushima Daiichi Nuclear Power Plant [May 6, 2011]
Detection of radioactive materials from seawater near Fukushima Daiichi Nuclear Power Station (57th release)
Radioactivity density of seawater (Attachment)
Results of nuclide analysis of seawater (Attachment)