according to the analysis by the Fukushima prefectural government.
From Asahi Shinbun digital print version, partial (3:13AM JST 12/9/2011):
Regarding the amount of external radiation exposure suffered by the residents of Fukushima Prefecture as the result of the Fukushima I Nuclear Power Plant accident, the analysis by the prefectural government has revealed that it is estimated that the amount is 37 millisieverts maximum with the average of over 1 millisievert for 1730 residents in 3 municipalities with high radiation levels including Iitate-mura. About half of the residents had over 1 millisievert external radiation exposure in 4 months. The annual radiation exposure limit [excluding the natural radiation] is 1 millisievert.
This is the first time the external radiation exposure of the residents [of Fukushima] is disclosed. The Fukushima prefectural government plans to publish the result of the analysis soon, and notify the residents by mail.
The prefecture and Fukushima Medical University (whose vice president is that Dr. "Damashita" Yamashita) sent out detailed questionnaires for the Fukushima residents to fill out. For the residents of the three municipalities - my guess is Iitate-mura, Namie-machi, and Minami Soma City - they did some testing of internal radiation exposure.
By no means this analysis is comprehensive, as Iitate-mura alone had 6,000 residents before the village was designated as "planned evacuation zone".