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/POLAR/EFI/SC/GEI/Position/PT60S NASA NumericalData Polar Electric Fields Instrument (EFI), Spacecraft Position in GEI Coordinates https://doi.org/10.48322/898v-f228 2026-02-12T23:59:27Z 2020-07-07T21:15:01Z Only known prior ReleaseDate of the metadata 2025-08-05T13:12:20Z Added ObservedRegion(s). 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 value in Version tag. ZCB 2025-11-14T16:03:06Z Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB 2025-12-04T13:30:59Z Added MetadataRightsList. Updated to 2.7.1. ZCB 2026-02-12T23:59:27Z Added DOI. tlk The Polar spacecraft position, in GEI coordinates. The user will acknowledge, in any publication which uses POLAR EFI data, the instrument PI. Mozer, Forrest S. 2025-11-14T16:03:06Z University of California, Berkeley spase://SMWG/Person/Forrest.S.Mozer PrincipalInvestigator spase://SMWG/Person/Jack.B.Vernetti MetadataContact spase://VWO/NumericalData/POLAR/EFI/S_C_GEI_Position spase://VSPO/NumericalData/POLAR/EFI/SC/GEI/Position/PT60S spase://SMWG/Repository/UCB/POLAR/EFI Online Open http://polarefi.ssl.berkeley.edu/PolarEFI This URL is the root location of the POLAR EFI archive. It consists of Yearly subdirectories: 1996, 1997, ..., 2008 each of which consists of Monthly subdirectories: 01, 02, ..., 12 The archive files for a given date are located in the corresponding YY/MM subdirectory. en CDF None The user will acknowledge, in any publication which uses POLAR EFI data, the instrument PI. spase://SMWG/Instrument/POLAR/EFI Ephemeris 1996-03-16T00:00:00 2008-04-13T24:00:00 PT60S Earth.Magnetosphere.Polar Earth.NearSurface.AuroralRegion Earth.Magnetosphere Time TIME_TAG Data point time-tags which are double precision floating point numbers which represent the number of seconds, UTC, from midnight of the day represented by the file. PT60S seconds 0.0 86460.0 Temporal SCPositionGEIVector DATA_VALUES Data point vector values which are a triplet of single precision floating point numbers which represent the X,Y,Z components of the GEI spacecraft position, in Re. PT60S Re 6.3712e+6>m Cartesian GEI -20.0 20.0 Positional