About Radiation Levels..

Just want to do some calculations to make things clear on radiation levels.
I am an American, so I will base my average radiation levels on that of an American citizen.

I will list my sources in links at the end.

Unit conversion:
(Radiation exposure) 1 mrem is equal to 10 micro-Sievert (which is what the news keeps using)

The news is also using per hour as their measurements, so micro-sievert / hour. I'll be changing things to per day.

First, take a look at the average radiation level received by an American every year.
Based on a calculation I found on the internet, the average person receives around 340 mrems per year which is 3400 micro-Sievert per year.

Convert to per day and we have about 9.3 uSv (micro-sievert) per day average.

Basically right now they are saying in Tokyo we are absorbing .8 uSv per hour.
Convert this to per day and we have about 19.2 uSv.

Average XRay (Depending on what part of the body you take it) is around 10uSv.

So everyday we are basically absorbing the amount of 2 (Chest) XRays.

Please look at the date to check the radiation amounts, of course this will change everyday.

Average Radiation Calculation:
http://www.new.ans.org/pi/resources/dosechart/

Info about units of Sievert:
http://en.wikipedia.org/wiki/Sievert

Conversion from mrem to Sieverts:
http://en.wikipedia.org/wiki/R%C3%B6ntgen_equivalent_man

More about radiation exposure:
http://web.mit.edu/newsoffice/1994/safe-0105.html

Xray radiation exposure:
http://en.wikipedia.org/wiki/X-ray

Tokyo radiation exposure:
http://news.asiaone.com/News/Latest%2BNews/Asia/Story/A1Story20110315-268185.html

Comparison of rad levels
http://www.taishitsu.or.jp/radiation/index.html