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/EField/E0/GSE/Spin/PT6S NASA NumericalData Polar Electric Fields Instrument (EFI), Electric field in GSE coordinates, Spin Resolution (E_0 version) https://doi.org/10.48322/1pr5-a107 2026-06-26T13:26:25Z 2020-07-07T21:15:00Z Only known prior ReleaseDate of the metadata 2025-08-05T13:12:19Z 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 2025-11-14T16:03:05Z Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB 2025-12-04T13:30:58Z Added MetadataRightsList. Updated to 2.7.1. ZCB 2026-02-12T23:59:23Z Added DOI. tlk 2026-06-26T13:26:25Z Add 'Z' to TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB Electric field in GSE coordinates (E_0 version), one vector per spin, computed by a spin-fit algorithm using the realtime electric field measurements. The user will acknowledge, in any publication which uses POLAR EFI data, the instrument PI. Mozer, Forrest S. 2025-11-14T16:03:05Z University of California, Berkeley spase://SMWG/Person/Forrest.S.Mozer PrincipalInvestigator spase://SMWG/Person/Jack.B.Vernetti MetadataContact spase://VWO/NumericalData/POLAR/EFI/EField_E0_GSE_Spin spase://VSPO/NumericalData/POLAR/EFI/EField/E0/GSE/Spin/PT6S 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 ElectricField 1996-03-16T00:00:00Z 2008-04-12T24:00:00Z PT6S 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. PT6S seconds 0.0 86460.0 Temporal ElectricFieldVector 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 electric field. These vectors are in one-to-one correspondence with the values in the TIME_TAG parameter. This data is computed by a ground spin-fit algorithm on the realtime electric field and represents one point every spin. PT6S mV/m Cartesian GSE -2000.0 2000.0 Vector Electric