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Digital Values of Solar Wind Electron Density vs Time Normalized to 1 AU


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

Time span: 1968-11-11 to 1971-03-07


These data were prepared from the original analog records by the experimenter's staff. The primary data consist of hourly values of normalized electron number density in the solar wind. To obtain these data, the ionospheric total content was removed from the observed total content values, and the total content path length was used to convert total content to density. The resulting values were then normalized to 1 AU assuming density to be proportional to the inverse square of the satellite-solar distance. Values resulting from interpolation are flagged. No interpolated values were recorded when data gaps exceeded 4 days. This data set is on one binary magnetic tape written on an IBM 7094 computer. Auxiliary data on the tape include UT and Carrington rotation number. Data are available for about 12 h per day when the spacecraft was in view from the Stanford transmitter. Identical data for other time periods from Pioneers 6 (65-105A-04D), 7 (66-075A-04D), and 8 (67-123A-03C), and Mariner 5 (67-060A-02C) also appear on this tape.

Alternate Names

  • Corrected Electron Density


  • Space Physics: Heliospheric Studies


  • 68-100A-03C

Additional Information



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



NameRoleOriginal AffiliationE-mail
Dr. Thomas A. CroftGeneral ContactStanford
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