Radiation dose in Tokyo-No fear at all

(Please read my last post to grasp this topic   )

You can see 'CPM ' on the chart on the page.

(quoted from http://park30.wakwak.com)

CPM X 0.00833 = micro sievert(μSv)/hour　

The CPM of Tokyo is about 20-30(9th April),
so 20-30 x 0.00833:  it's about 0.167-0.249 micro sieverts.(μSv) 
This is hourly data.

Next please check this page.
http://www.bbc.co.uk/news/health-12722435

(quoted: BBC website)

You can see Q&A: Health effects of radiation on the page.
It says that 2 millisieverts per year (mSv/yr) is 'Typical background radiation experienced by everyone (average 1.5 mSv in Australia, 3 mSv in North America)'

This is yearly data.
0.167-0.249 micro sieverts.(μSv) is hourly data, so

0.167 x 24(hour) x 365(year) = 1462.92 micro sieverts/yr

1 micro sievert(μSv)　X 1000 = 1 milli sievert(mSv)

So 1462.92 micro sieverts. is 1.463 milli sieverts, it is under 2 millie sieverts.

BBC is trustworthy as everyone knows.

That is why we don't leave Tokyo and we are not paranoid with radiation very much now.

Of course I check this page everyday.  If CPM is over 30-40 everyday, I would leave Tokyo.