English: Chart of the VHF Riometer at HAARP from UTC 2007-01-28_12:00 until 2007-01-30_00:00. It shown an event which causes an increased ionospheric absorption.
Deutsch: Diagramm des VHF Riometer bei HAARP von UTC 2007-01-28_12:00 bis 2007-01-30_00:00. Es zeigt ein Ereignis, das eine erhöhte ionosphärische Dämpfung ausgelöst hat.
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{{Information |Description={{en|1=Chart of the VHF Riometer at HAARP from UTC 2007-01-28_12:00 until 2007-01-30_00:00. It shown an event which causes an increased ionospheric absorption.}} {{de|1=Diagramm des VHF Riometer bei HAARP von UTC 2007-01-28_12:0