I do not think the good people at the Tokyo Shimbun will mind too much if I offer a jpeg of their October 7 printout of the Cesium 134 and Cesium 137 counts of the Kanto Area, with a legend and color scheme that at least makes some kind of sense.
As the map shows, the town of Iidate, which was not a part of the original evacuation zone, just got plastered. So for several days after the disaster, the populace of the town went about their business, without precautions, though their environment was more sullied than most of the area within the 30-to-20 band where folks were advised to not leave their homes due to fallout. I would not surprised if "Iidate" does not become a metaphor for a total governmental failure (the SPEEDI data available to the Prime Minister's Office at the time of the disaster showed that the town was in danger. Nobody at the Kantei knew what to do with the data, however.)
Stunning also is the tongue of light green extending from the Miyagi border to the border of Tochigi, engulfing the major cities of Fukushima and Koriyama -- the prefecture's agricultural and industrial corridor. What a mess.
As for the other prefectures, well, the highland and alpine areas of Gunma and Tochigi are contaminated, even though they be 100 to 180 kilometers from the Fukushima Daiichi plant, while the plains and lower hills are spared.
As to what happened to the area southwest of Tsuchiura, goodness knows. Must have been an unfortunate front of rain.
For a large reproduction of this map, click HERE.