ursigram

a message containing solar and geophysical data and solar activity predictions, distributed world wide by one of the prediction centres approved by the International Union of Radio-Science NOTE - The term 'ursigram' is derived from the acronym of the 'Union of Radio-Science Internationale'.
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=705-07-91
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