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Hourly Averaged Count Rate Data


Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1974-12-11 to 1983-12-31


This data set contains hourly averaged fluxes of electrons, protons, and alpha particles in the MeV range. The 9-track tapes were written by PDP 11/45, in ASCII. Tapes written at 800 bpi as well as those written at 1600 bpi are available. Each tape has a single file, and each record contains 10 hourly averages. The differential fluxes (particles/sq.m, s, sr, MeV) cover, in several bands, the energy range 0.3-2.0 MeV for electrons, 4.0-51 MeV for protons, and 2.0-48 MeV for alpha particles. Also provided are the integral fluxes of alphas above 48 MeV, and protons above 51 MeV. For some of the energy channels, the standard deviations of the averages are also provided. Each file is preceded by a header record, providing the start and stop times of the data in the file.

Data are available online at

Alternate Names

  • Hourly Avg Count Rate Data


  • Astronomy: Cosmic Ray
  • Space Physics: Heliospheric Studies


  • 74-097A-07A

Additional Information



Questions and comments about this data collection can be directed to: Dr. H. Kent Hills



NameRoleOriginal AffiliationE-mail
Dr. Reinhold Mueller-MellinData ProviderUniversitat
Mr. Robert M. CandeyGeneral ContactNASA Goddard Space Flight
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