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Continue to ChatThe ionospheric foF2 data over Istanbul and their response to solar activity for the years 1964-1969 and 1993 - https://avesis.metu.edu.tr/yayin/23097662-55bb-4ca7-be9c-e913ddbd61ce/the-ionospheric-fof2-data-over-istanbul-and-their-response-to-solar-activity-for-the-years-1964-1969-and-1993