spase://NASA/NumericalData/CRRES/PROTEL/PT5H

This data set holds half-orbit (~5 hour) resolution proton distributions (19 5-deg equatorial pitch angles vs. 24 energies) from the Proton Telescope (PROTEL) on the CRRES spacecraft. The energy range covered is 1-100 MeV. These data are developed from the 1-min insitu pitch angle distributions by assigning each 5-deg bin in pitch angle a corresponding McIlwain L value and then by mapping the insitu pitch angle distribution to the equator, into 0.05-wide L bins, assuming first adiabatic invariant conservation. The mapping yields equivalent equatorial pitch angles. Flux data for a given half-orbit, given 0.05-wide L bin, given equatorial pitch angle and given energy bin are then averaged. Data records are for a given half-orbit and given L bin; each record contains averaged fluxes vs. equatorial pitch angle and energy. The data are in SGI(UNIX) binary format. Read software is contained within the companion documentation.