Radiation levels fall in Tokyo area: officials

[FBaggins]

Tokyo officials said they detected 0.809 of a micro-sievert between 10:00 and 11:00 am in the capital, some 250 kilometers (155 miles) southwest of the troubled Fukushima plant on the Pacific coast.

The normal level is about 0.035-0.036 micro-sieverts. A chest X-ray typically involves a dose of 20 micro-sieverts. The level fell to an average 0.075 micro-sieverts four hours later.

...snip...

In Chiba, southwest of Tokyo, the level of radiation surged to 0.313 micro-sieverts at 5:00 pm, the highest reading since the quake struck on Friday, the city government said. But it fell back to 0.039 four hours later, compared with the range of 0.022-0.044 recorded in 2009, it said.

http://www.koreaherald.com/national/Detail.jsp?newsMLId=20110316000111

[OKIsItJustMe]

1. So, the wind shifted?

Seriously, I'm glad for the people of Tokyo, but this doesn't say much about conditions on the scene.

[FBaggins]

2. Doesn't say anything at all about conditions "on the scene"

if the scene we're talking about is Fukushima.

It does give us an idea of the relative risl (to date) elsewhere in the country.