Antinuclear

As you may see the contamination is well spread all along the eastern coast of Japan, the highest contamination found of course in the Fukushima prefecture.

But also numerous hot spots are found in the two prefectures above Fukushima prefecture, the Iwate and Miyagi prefectures,  and also near Tokyo in the Ibaraki, Saitama, Kanagawa and Chiba prefectures.

The contamination is concentrated in the two eastern regions of Japan: the Tohoku region in  the north-east, and the Kanto region in the east. It is less pronounced once you leave the eastern part of Japan going towards the central regions of nearby Chubu and distant Kansai.

http://www.minnanods.net/soil/pref17_colored/map17.html