This value DOESN'T influence our health so much. For example, if you go to New York from Tokyo by airplane, you may be exposed to radiation 190 micro Sv/h. Or, when you have a X-rays medical examination, you are exposed to radiation 600 micro Sv once.
But, it is fact that you are exposed to more radiation than usual. You should be careful and had better stay inside.
This is the full information about the radiation value:
Miyagi: 1.2 - 5.7
Related to the accident at Fukushima Nuclear Power Plant, you can see here: http://www.kaij.jp/pdf/Accident_at_Fukushima_Nuclear_Power_Plant_eng.pdf. The conclusions are:
- We are safe unless we go near the nuclear power plant
- Even if we are near the nuclear power plant, there is no problem if we wear mask and long-sleeved shirt, and wash our hands and shirt when coming home from outside
- We can conclude that it has no effect on TOKYO
- We can trust the information announced by the Japanese government
Everything is ok. So, please be calm....