we have this report. 66 >> reporter: the disaster at the fukkushima daiichi plant in march of 2011 spread radioactive substances over eastern japan. the government ordered more than 80,000 residents in fukushima prefecture to evacuate as they were living in areas where radiation levels exceeded 20 millisieverts per liter. the iaea did the research in fukushima this month at the request of japan's government. inspectors check the progress of the decontamination and made up a preliminary report. the agency said the work was progressing well but the 1 millisievert goal cannot be achieved through decontamination alone. it stressed the government should explain to the public that an individual radio dose from 1 to 20 milliseverts per year is in line with the international standards and it suggested that we are locating resources to the recovery of essential infrastructure would benefit the public and more effort is needed to monitor individual dose to decide on decontamination. >> you have to select the appropriate value of protection level from 1 to 2 millisievert for this special situation.