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/DisplayData/ISEE1/LEPEDEA/Spectrograms NASA DisplayData ISEE 1 LEPEDEA Ion and Electron Spectrograms 2025-12-04T13:27:59Z 2021-02-11T14:27:06Z Only known prior ReleaseDate of the metadata 2025-11-14T16:17:33Z 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 2025-12-04T13:27:59Z Added MetadataRightsList. Updated to 2.7.1. ZCB This data set consists of a set of daily files with GIF-formatted spectrograms displaying color coded ion flux levels as functions of time and of energy level, in each of 4 look-direction quadrants, over the energy range of ~150 eV/q to 45 keV/q. Also displayed is a single omni-directional spectrogram for electrons in the same energy range. ISEE position data is listed once every every four hours across the time axis. Please acknowledge the ISEE/LEPEDEA team at U. Iowa, L.A. Frank, Principal Investigator Frank, Louis A. 2025-11-14T16:17:33Z University of Iowa spase://SMWG/Person/Louis.A.Frank PrincipalInvestigator spase://SMWG/Person/Rae.Dvorsky GeneralContact LEPEDEA Web site http://www-pi.physics.uiowa.edu/lep/ spase://VSPO/DisplayData/ISEE1/LEPEDEA/Spectrograms spase://VSPO/DisplayData/ISEE1/LEPEDEA/Spectrograms spase://SMWG/Repository/UIowa/ParticlesImagingGroup Online Open GIFs from U.Iowa http://www-pi.physics.uiowa.edu/lep-data/scanned/ GIF Please acknowledge the ISEE/LEPEDEA team at U. Iowa, L.A. Frank, Principal Investigator spase://SMWG/Instrument/ISEE1/LEPEDEA ThermalPlasma 1978-02-27T00:00:00 1987-09-26T00:00:00 Earth.Magnetosphere