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Hourly Electron-Proton Fluxes, Helios 1 Energetic Electron-Proton Detector


Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1974-12-10 to 1980-12-31


This data set includes hourly averages of sectored rates for protons and electrons measured by the Helios 1 Energetic Electron-Proton Detector. The data records have been reformatted into ASCII format from the PDP binary format of the original data set (NSSDC ID 74-097A-10A). Each original data record has been written into groups of 1110 data fields (separated by spaces) for integers or real numbers. The first 14 fields are for header information. For each of 16 sectors (sector 1 towards the Sun) there are electron count rates for each of 15 energy channels at 17 to 835 keV and proton count rates for the same number of channels at 21 to 677 keV. The 16-th energy channel in each case counts electrons above 835 keV and protons above 677 keV, respectively. Several other types of rates are also included. The accompanying text document gives the detailed ordering and description of parameters.

Data are available online at

Alternate Names

  • Hourly Electron-Proton Flux,ASCII
  • SPDF0460


  • Space Physics: Heliospheric Studies


  • 74-097A-10B

Additional Information



Questions and comments about this data collection can be directed to: Dr. John F. Cooper



NameRoleOriginal AffiliationE-mail
Dr. Ehrhard KepplerData ProviderMax-Planck-Institut fur
Dr. Ehrhard KepplerGeneral ContactMax-Planck-Institut fur
Mr. Robert M. CandeyGeneral ContactNASA Goddard Space Flight
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