2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/CRRES/PROTEL/PT5H NASA NumericalData CRRES PROTEL proton equatorial distributions vs.L https://doi.org/10.48322/7wag-2205 2025-12-04T13:29:05Z 2021-03-10T20:13:28Z Only known prior ReleaseDate of the metadata 2025-11-14T16:01:57Z Added PublicationInfo. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB 2025-12-04T13:29:05Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB 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. Please acknowledge Gary Mullen at AFRL. Mullen, E. G. 2025-11-14T16:01:57Z Space Physics Data Facility spase://SMWG/Person/E.Gary.Mullen PrincipalInvestigator AFRL Descriptive Document https://spdf.gsfc.nasa.gov/pub/data/crres/particle_protel/document/crres_readme3.pdf AFRL document authored by Donald Brautigam on HEEP and PROTEL, now a readme at nssdcftp. spase://VSPO/NumericalData/CRRES/PROTEL/Lbins spase://VSPO/NumericalData/CRRES/PROTEL/PT5H spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/crres/particle_protel/ HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/crres/particle_protel/ In CDF via HTTP from SPDF Binary Please acknowledge Gary Mullen at AFRL and the Space Phyics Data Facility at NASA/Goddard. Calibrated spase://SMWG/Instrument/CRRES/PT EnergeticParticles 1990-08-01T00:00:00 1991-10-12T00:00:00 PT5H Earth.Magnetosphere.Main Earth.Magnetosphere.RadiationBelt