Figure 1:

Geographical map of Fukushima Prefecture. The map is colored according to air dose rates at a height of 1 m above the ground as of 16 December 2011. The population of Futaba District was ~72 000 before the disaster, and almost all residents were forced to evacuate in the immediate aftermath of the FDNPP accident. While the Central Government of Japan gradually started to lift evacuation orders from September 2011, the current population of Futaba District remains at 11 000. Although there were two hemodialysis facilities in Futaba District prior to the disaster, both facilities were located in the evacuation zone as of March 2016 and have yet to resume operations. Source: Nuclear Regulation Authority, Geospatial Information Authority of Japan and Esri Japan.