Radioactivity Value at Monitoring Stations in Ibaraki Prefecture

For reference:
**The air dose rate is displayed as nGy/h(nanogray/ hour) which is equal to the measurement of nSv/h(nanosievert/hour). The latter is used to measure the influence on humans.

1nGy/h(nanogray/hour) = 1nSv/h(nanosievert/hour)
**The radioactivity value of one chest x-ray is 50,000nSv (nanosievert)
**1000nSv(nanosievert) = 1μSv(microsievert) = 0.001mSv(millisievert)

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http://www.pref.ibaraki.jp/bukyoku/seikan/kokuko/en/links/radiation_municipality.html