| http://www.w3.org/ns/prov#value | - The presence of (131)I in aerosols (200???6 ?Bq m(-3)) collected at the Pic du Midi observatory, located at 2877 m altitude in the French Pyr???n???es, indicated that the Japanese radioactive cloud reached France between 22 and 29 March, i.e. less than two weeks after the initial emissions, as suggested by a (137)Cs/(134)Cs ratio of 1.4.
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