Ministry of Education, Culture, Sports, Science and Technology quit measuring plutonium but they mistakenly published the contamination map of Tokyo, Kanagawa and north Kanto area.
It was measured by a helicopter.
Page 3 Radiation level of Tokyo (1m from the ground)
Page 4 Cesium 134+137 on the ground in Tokyo
Page 5 Cesium 134 on the ground in Tokyo
Page 6 Cesium 137 on the ground in Tokyo
Page 7 Radiation level of Kanagawa (1m from the ground)
Page 8 Cesium 134+137 on the ground in Kanagawa
Page 9 Cesium 134 on the ground in Kanagawa
Page 10 Cesium 137 on the ground in Kanagawa
Page 11 Radiation level of north kanto (1m from the ground)
Page 12 Cesium 134+137 on the ground in north Kanto
Page 13 Cesium 134 on the ground in north Kanto
Page 14 Cesium 137 on the ground in north Kanto
Overview: Gunma, Tochigi, and north Chiba have hot spots.
also, Katsushika, Hachioji, and western part of Tokyo are very contaminated.