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/ROCSAT-1/IPEI/PT1s NASA NumericalData ROCSAT-1 IPEI Key Parameters 2025-12-04T13:31:22Z 2021-04-27T15:38:11Z Only known prior ReleaseDate of the metadata 2025-11-14T16:02:54Z 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 2025-12-04T13:31:22Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB This data set contains ion data from the ROCSAT-1 Ionospheric Plasma and Electrodynamics Instrument (IPEI). They include: composition for H+, He+, NO+, O+ ions, total density, temperature, and velocities in two different coordinate systems, namely the non-rotating Earth-centered Inertia (ECI) Coordinate System and the rotating Earth-centered Fixed (ECF) Coordinate System. Please acknowledge the data provider, Shin-Yi Su at the Institute of Space Science, National Central University of Taiwan and the NASA SPDF when using these data. Su, Shin-Yi 2025-11-14T16:02:54Z Space Physics Data Facility spase://SMWG/Person/Shin-Yi.Su PrincipalInvestigator spase://VSPO/NumericalData/ROCSAT-1/IPEI/PT1s 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/formosat-rocsat/formosat-1/ in CDF via FTP from CDAWeb HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/formosat-rocsat/formosat-1/ in CDF via HTTP from CDAWeb CDF 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 CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=RS_K0_IPEI&index=sp_phys RS_K0_IPEI Access to ASCII, CDF, and plots via NASA GSFC CDAWeb. Text 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 CDAWeb HAPI Server https://cdaweb.gsfc.nasa.gov/hapi RS_K0_IPEI Web Service to this product using the HAPI interface. CSV spase://SMWG/Instrument/ROCSAT-1/IPEI IonComposition 1999-03-11T00:00:00 2004-06-11T23:59:56 PT1S Earth.NearSurface.Ionosphere