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Total Electron Content, Hardcopy


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1964-10-16 to 1967-12-31


These are published data giving the total ionospheric electron content (TEC) between the satellite and the earth-based recording site. Data are usually normalized to a vertical path through an ionospheric point (IP), where the propagation path intersects the electron maximum (usually taken to be near 350 km). Data are published by various observers at different locations, which include Val Joyeux, France; Florence, Italy; Bangkok, Thailand; Delhi, India; London; Ontario, Canada; and Haifa, Israel. Data presented include date-time, TEC, and location for sub-IP and/or satellite. Observational details are normally included in the text of each volume. The data are available in hard copy at NSSDC for reference. Microfilm, microfiche, or hard copy pages are available to NASA and NASA contract employees. Other interested persons should request these data through the Boulder Data Center, since they are considered to be ground-based observations.

Alternate Names

  • Total Electron Content (Books)


  • Space Physics: Ionospheric Studies


  • 64-064A-01B

Additional Information



Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
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