spase://NASA/NumericalData/Helios1/E7/PT1H

This data set contains hourly averaged fluxes of protons measured by the GSFC Galactic and Solar Cosmic Ray experiment on Helios 1. The fixed length ASCII records have been reformatted from the binary format of the originally submitted data set (NSSDC ID 74-097A-08B). Each record contains the date and time in year, month, day, hour, minute, and second. The flux values and statistical errors are included for proton energy ranges of 3.3 - 21.6 MeV, 21.6 - 57 MeV, and above 57 MeV.