0.4 microSv/h from filter of air purification system
Even in Kumamoto, filters of air purification system and vacuum are contaminated.
Because air purification system does not take the air in strongly, lungs of human are likely contaminated at the same level.
Inspector 0.041mREM/hr = 0.4μSv/hr
↑ Inspector 0.034mREM/h = 0.34μSv/hr
↑ Inspector 0.059mREM/hr = 0.59μSv/hr