10.50uSv/h was detected on the train from Narita airport (Chiba) to Tokyo,Yokohama.
This is one of the major train line called JR Sobu sen.
10.50uSv/h was detected while the person held the Geiger counter in the air.
He also detected 4.97uSv/h on the seat.
0.50uSv/h at a platform.
0.50uSv/h near air conditioner.
This person thinks the seat is the most contaminated.
Anyway,if you are on the train for 1 hour every day,
you’ll be exposed to 3.83mSv/h annually,which is four times higher than the safety limit of WHO.