According to the office Hukuzima TEPCO, the amount of radiation on the north side of the main office located about 500 meters northwest of Unit 3 at 1:00 pm on 50 minutes before the discharge of the SDF was microsievert 3484 per hour For, at 2:00 pm 50 minutes after the end of 3339 microsievert per hour and discharge, and that was down slightly. For this, TEPCO Hukushima office, as changes are so small, to evaluate the effect can not at present, will be to further analysis.

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