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Directory Plots on Film


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

Time span: 1967-07-29 to 1969-07-19


This 16-mm microfilm data set, supplied by the principal investigator, is a directory of the existence of experiment data. Each frame is a linear monthly calendar grid with the ordinate giving day of month, and the abscissa scale giving the universal time in both hours and seconds of day (two scales). For a given day there can be two horizontal lines extending over the time interval for which experiment data exist. On a given day, the upper line shows upward-looking data (mirror position 2) and the lower line shows downward-looking data (mirror positions 1, 3, 4, 5, 6, and 7). On the right-hand side ordinate, are printed for each day, the number of the tape used to generate the plot. Included in the frame heading is the month and year of the measurement. These data were generated from tape data set 67-073A-12N.

Alternate Names

  • Directory Plots, Mfilm


  • Space Physics: Ionospheric Studies


  • 67-073A-12G

Additional Information



Questions and comments about this data collection can be directed to: Dr. Dieter K. Bilitza



NameRoleOriginal AffiliationE-mail
Mrs. Virginia B. ZannerGeneral ContactNASA Goddard Space Flight Center
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