thickness of ash layer

this evening scientist said that the thickness of ash is between 4 and 5 cm on the area below Eyjafjallajøkull.
the area is not more than a few km to each side of thorvaldseyri farm.
if the layer would be more than 10 cm then it would be serious for the farmers and it would maybe take 100 years before the earth would be 100% fertile again...

weather in reykjavik has been sunny, rainy, snowy, sleet and rain again, but we have not gotten any ash this way.
my thesis is going well, producing some words and some figures. but there is still some more work that has to be done;0)