Measurements in the great Reykjavik area, at Hvaleyrarholti and Digranesheiði, show clearly that as from the eruption in Grímsvötn has reached Reykjavik. Around 20:30 on 22 May 2011.
Latest measurements indicate that this was about the top values, this time around, with concentration much lower now at 22:00, and high value of 194 micro-g/m3 at HEH.
Of course we can expect other peaks like this, even later tonight.
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