Name: TWINS 2 - Spacecraft Ephemeris
Creator: McComas, David J.
Published: 2025-11-14
License: https://spdx.org/licenses/CC0-1.0.html

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} function getVersionedBibTeX(bibtex) { /* Add version field as suggested by August (Gus) Muench, Journals Data Editor, American Astronomical Society (email dated 7/7/25) */ const accessVersion = ", version={Accessed on " + currentIsoDateStr + "}"; const modifiedBibtex = bibtex.substring(0, bibtex.lastIndexOf("}")) + accessVersion + "}"; return modifiedBibtex; } function getBlob(text) { return new Blob([text], { type: "text/plain"}); } function clipboardAlert(text) { alert(text + "\nCopied to clipboard"); } function clipCitation(doi) { document.body.style.cursor = 'wait'; let url = "https://citation.doi.org/format?doi=" + doi.replace("https://doi.org/", "") + String.fromCodePoint(38) + "style=bibtex" + String.fromCodePoint(38) + "lang=en-US"; const text = new ClipboardItem({ "text/plain": fetch(url) .then(getResponseText) .then(getVersionedBibTeX) .then(getBlob) }); navigator.clipboard.write([text]); text.getType("text/plain") .then(getResponseText) .then(clipboardAlert); } function toggle_usa_banner_details() { const details = document.getElementById("usa-banner-details"); const indicator = document.getElementById("usa-banner-indicator"); if (details.style.display === "none") { details.style.display = "block"; indicator.textContent = "^"; } else { details.style.display = "none"; indicator.textContent = "v"; } } const monthName=new Array("January","February","March","April","May","June","July","August","September","October","November","December"); let currentDate = new Date(); let currentIsoDateStr = currentDate.toISOString().substring(0, 10); let currentDateStr = currentDate.getFullYear() + '-' + monthName[currentDate.getMonth()] + '-' + currentDate.getDate(); Data Access FTPS from SPDF (not with most browsers) HTTPS from SPDF CDAWeb SSCWeb WebService: CDAWeb Programmatic Data Access WebService: SSCWeb Programmatic Data Access 4D Orbit Viewer HAPI: CDAWeb HAPI Server TWINS 2 - Spacecraft Ephemeris var authors='McComas, David J.'; document.write(authors); (2025). TWINS 2 - Spacecraft Ephemeris. [Data set]. Space Physics Data Facility. https://doi.org/10.48322/psgy-3e13. Accessed on document.write(currentDateStr);. Note: Proper references, including Copy BibTeX Citation or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication. ResourceID spase://NASA/NumericalData/TWINS2/Ephemeris/PT1M45S Description Definitive orbit data Metadata Rights CC0-1.0: Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license. View XML | Edit Details Version:2.7.1 NumericalData ResourceID spase://NASA/NumericalData/TWINS2/Ephemeris/PT1M45S NamingAuthority NASA ResourceType NumericalData ResourceHeader ResourceName TWINS 2 - Spacecraft Ephemeris DOI https://doi.org/10.48322/psgy-3e13 ReleaseDate 2026-07-21 12:08:13Z RevisionHistory RevisionEvent ReleaseDate 2021-04-27 15:38:11Z Note Only known prior ReleaseDate of the metadata RevisionEvent ReleaseDate 2025-10-22 12:34:56.789Z Note Revised ObservedRegion. JMW RevisionEvent ReleaseDate 2025-11-14 16:02:56Z Note 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 RevisionEvent ReleaseDate 2025-12-04 13:32:08Z Note Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB RevisionEvent ReleaseDate 2026-02-16 14:46:17Z Note Added DOI. TLK RevisionEvent ReleaseDate 2026-06-26 13:30:01Z Note Add 'Z' to RevisionEvent:ReleaseDate(s). ZCB RevisionEvent ReleaseDate 2026-07-21 12:08:13Z Note Added HelioData InformationURL. JWL Description Definitive orbit data PublicationInfo Authors McComas, David J. PublicationDate 2025-11-14 16:02:56Z PublishedBy Space Physics Data Facility Contacts Role Person StartDate StopDate Note 1. PrincipalInvestigator spase://SMWG/Person/David.J.McComas 2. MetadataContact spase://SMWG/Person/Jan.Merka InformationURL Name TWINS Home Page URL https://earth.esa.int/web/eoportal/satellite-missions/t/twins Description ? InformationURL Name HelioData URL https://helio.data.nasa.gov/dataset/TWINS2_Ephemeris_PT1M45S Description The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more. PriorIDs spase://VMO/NumericalData/TWINS2/Ephemeris/PT1M45S spase://VSPO/NumericalData/TWINS2/Ephemeris/PT1M45S AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Availability Online AccessRights Open RightsList Rights SchemeURI https://spdx.org/licenses/ RightsIdentifierScheme SPDX RightsIdentifier CC0-1.0 RightsURI https://spdx.org/licenses/CC0-1.0.html RightsName Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products AccessURL Name FTPS from SPDF (not with most browsers) URL ftps://spdf.gsfc.nasa.gov/pub/data/twins/twins2/ephemeris/or/ Description NASA/GSFC CDAWeb ftp access to the data. AccessURL Name HTTPS from SPDF URL https://spdf.gsfc.nasa.gov/pub/data/twins/twins2/ephemeris/or/ Description In CDF via HTTP from CDAWeb Format CDF Encoding None AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF Availability Online AccessRights Open RightsList Rights SchemeURI https://spdx.org/licenses/ RightsIdentifierScheme SPDX RightsIdentifier CC0-1.0 RightsURI https://spdx.org/licenses/CC0-1.0.html RightsName Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products AccessURL Name CDAWeb URL https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=TWINS2_OR_DEF&index=sp_phys ProductKey TWINS2_OR_DEF Description TWINS 2 spacecraft ephemeris data with subset, plot, list functionalities from CDAWeb AccessURL Name SSCWeb URL https://sscweb.gsfc.nasa.gov/cgi-bin/Locator.cgi ProductKey twins2 Format Text AccessDirectoryTemplate https://cdaweb.gsfc.nasa.gov/pub/data/twins/twins2/ephemeris/or/$Y AccessFilenameTemplate twins2_or_def_$Y$m$d_$v.cdf Acknowledgement Please acknowledge the CDAWeb team at GSFC/SPDF. AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF Availability Online AccessRights Open AccessURL Name CDAWeb Programmatic Data Access URL https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/TWINS2_OR_DEF/clientLibraryExample/ Style WebService ProductKey TWINS2_OR_DEF Description Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Format Binary Acknowledgement Please acknowledge the CDAWeb team at GSFC/SPDF. AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF Availability Online AccessRights Open AccessURL Name SSCWeb Programmatic Data Access URL https://sscweb.gsfc.nasa.gov/WS/sscr/2/observatories/TWINS2_OR_DEF/clientLibraryExample/ Style WebService ProductKey TWINS2_OR_DEF Description Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Format Binary Acknowledgement Please acknowledge the CDAWeb team at GSFC/SPDF. AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF Availability Online AccessRights Open AccessURL Name 4D Orbit Viewer URL https://sscweb.gsfc.nasa.gov/4dorbit/?sc=TWINS2_OR_DEF ProductKey TWINS2_OR_DEF Description 4D viewer for this data. Note: this AccessInformation element was added by HDPWS. Format HTML Acknowledgement Please acknowledge the CDAWeb team at GSFC/SPDF. AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF Availability Online AccessRights Open RightsList Rights SchemeURI https://spdx.org/licenses/ RightsIdentifierScheme SPDX RightsIdentifier CC0-1.0 RightsURI https://spdx.org/licenses/CC0-1.0.html RightsName Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products AccessURL Name CDAWeb HAPI Server URL https://cdaweb.gsfc.nasa.gov/hapi Style HAPI ProductKey TWINS2_OR_DEF Description Web Service to this product using the HAPI interface. Format CSV Acknowledgement Please acknowledge the CDAWeb team at GSFC/SPDF. InstrumentIDs spase://SMWG/Instrument/TWINS2/Ephemeris MeasurementType Ephemeris TemporalDescription TimeSpan StartDate 2001-04-11 00:03:22.394Z StopDate 2016-12-31 23:59:59.999Z Cadence PT1M45S ObservedRegion Earth.Magnetosphere.RadiationBelt ObservedRegion Earth.Magnetosphere ObservedRegion Earth.Magnetosheath ObservedRegion Earth.Magnetosphere.Magnetotail ObservedRegion Earth.Magnetosphere.Main Parameter #1 Name Epoch ParameterKey Epoch Description Epoch FillValue 31-Dec-9999 23:59:59.999 Support SupportQuantity Temporal Parameter #2 Name Start Time MJD ParameterKey ISTARTTIMEMJD Description Start Time MJD - time key of data point Units days FillValue -1.0E31 Support SupportQuantity Temporal Parameter #3 Name S/C ECI XYZ ParameterKey FSCECI Description The spacecraft location in ECI coordinates (cartesian XYZ components). Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GEI Structure Size 3 Element Name FSCECI X Qualifier Component.I Index 1 Element Name FSCECI Y Qualifier Component.J Index 2 Element Name FSCECI Z Qualifier Component.K Index 3 ValidMin -63800.0 ValidMax 63800.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #4 Name S/C GEO XYZ ParameterKey FSCGEO Description The spacecraft location in geographic coordinates (cartesian XYZ components). Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GEO Structure Size 3 Element Name FSCGEO X Qualifier Component.I Index 1 Element Name FSCGEO Y Qualifier Component.J Index 2 Element Name FSCGEO Z Qualifier Component.K Index 3 ValidMin -63800.0 ValidMax 63800.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #5 Name S/C GSM XYZ ParameterKey FSCGSM Description The spacecraft location in GSM coordinates (cartesian XYZ components). Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSM Structure Size 3 Element Name FSCGSM X Qualifier Component.I Index 1 Element Name FSCGSM Y Qualifier Component.J Index 2 Element Name FSCGSM Z Qualifier Component.K Index 3 ValidMin -63800.0 ValidMax 63800.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #6 Name S/C ECD XYZ ParameterKey FSCECD Description Spacecraft Eccentric Dipole Cartesian Coordinate XYZ Caveats The spacecraft location in eccentric dipole coordinates (cartesian XYZ components). Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName ECD Structure Size 3 Element Name FSCECD X Qualifier Component.I Index 1 Element Name FSCECD Y Qualifier Component.J Index 2 Element Name FSCECD Z Qualifier Component.K Index 3 ValidMin -63800.0 ValidMax 63800.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #7 Name S/C GEO Long ParameterKey FSCLONGGEO Description Spacecraft longitude (east longitude) in geographic coordinates. Units deg CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName GEO ValidMin 0.0 ValidMax 360.0 FillValue -1.0E31 Support Qualifier DirectionAngle.AzimuthAngle SupportQuantity Positional Parameter #8 Name S/C GEO Lat ParameterKey FSCLATGEO Description Spacecraft latitude in geographic coordinates. Units deg CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName GEO ValidMin -90.0 ValidMax 90.0 FillValue -1.0E31 Support Qualifier DirectionAngle.ElevationAngle SupportQuantity Positional Parameter #9 Name S/C Radial Dist ParameterKey FSCRADIALDIST Description Spacecraft radial distance (km) from the center of the Earth. Units km ValidMin 6380.0 ValidMax 63800.0 FillValue -1.0E31 Support Qualifier Magnitude SupportQuantity Positional Parameter #10 Name S/C Radial Alt ParameterKey FSCRADIALALT Description Spacecraft radial altitude (km) based on an oblate spheroid Earth model (WGS84). Units km ValidMin 0.0 ValidMax 57420.0 FillValue -1.0E31 Support SupportQuantity Positional Parameter #11 Name Sun ECI XYZ ParameterKey FSUNECI Description The location of the Sun in ECI coordinates (cartesian XYZ components). Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GEI Structure Size 3 Element Name FSUNECI X Qualifier Component.I Index 1 Element Name FSUNECI Y Qualifier Component.J Index 2 Element Name FSUNECI Z Qualifier Component.K Index 3 ValidMin -1.5E8 ValidMax 1.5E8 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #12 Name B ECI XYZ ParameterKey FBECI Description The magnetic field vector in ECI coordinates (cartesian XYZ components). Units nT CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GEI Structure Size 3 Element Name FBECI X Qualifier Component.I Index 1 Element Name FBECI Y Qualifier Component.J Index 2 Element Name FBECI Z Qualifier Component.K Index 3 ValidMin -32000.0 ValidMax 32000.0 FillValue -1.0E31 Field Qualifier Vector FieldQuantity Magnetic Parameter #13 Name B Mirror ParameterKey FBMIRROR Description The magnetic field magnitude at the spacecraft mirror point based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units nT ValidMin 0.0 ValidMax 32000.0 FillValue -1.0E31 Field Qualifier Magnitude FieldQuantity Magnetic Parameter #14 Name B Equatorial ParameterKey FBEQUATORIAL Description The magnetic field magnitude at the field-line minimum point based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units nT ValidMin 0.0 ValidMax 32000.0 FillValue -1.0E31 Field Qualifier Magnitude FieldQuantity Magnetic Parameter #15 Name B North 100km ParameterKey FBNORTH100KM Description The magnetic field magnitude at the North 100 km point based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units nT ValidMin 0.0 ValidMax 100000.0 FillValue -1.0E31 Field Qualifier Magnitude FieldQuantity Magnetic Parameter #16 Name B South 100km ParameterKey FBSOUTH100KM Description The magnetic field magnitude at the South 100 km point based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units nT ValidMin 0.0 ValidMax 100000.0 FillValue -1.0E31 Field Qualifier Magnitude FieldQuantity Magnetic Parameter #17 Name Mirror GSM XYZ ParameterKey FMIRRORGSM Description The spacecraft mirror point location in GSM coordinates (cartesian XYZ components) based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSM Structure Size 3 Element Name FMIRRORGSM X Qualifier Component.I Index 1 Element Name FMIRRORGSM Y Qualifier Component.J Index 2 Element Name FMIRRORGSM Z Qualifier Component.K Index 3 ValidMin -63800.0 ValidMax 63800.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #18 Name Equatorial GSM XYZ ParameterKey FEQUATORIALGSM Description The Equatorial Point location in GSM coordinates (cartesian XYZ components) based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSM Structure Size 3 Element Name FEQUATORIALGSM X Qualifier Component.I Index 1 Element Name FEQUATORIALGSM Y Qualifier Component.J Index 2 Element Name FEQUATORIALGSM Z Qualifier Component.K Index 3 ValidMin -200000.0 ValidMax 250000.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #19 Name North 100km GSM XYZ ParameterKey FNORTH100KMGSM Description The location of the North 100 km point in GSM coordinates (cartesian XYZ components) based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSM Structure Size 3 Element Name FNORTH100KMGSM X Qualifier Component.I Index 1 Element Name FNORTH100KMGSM Y Qualifier Component.J Index 2 Element Name FNORTH100KMGSM Z Qualifier Component.K Index 3 ValidMin -7000.0 ValidMax 7000.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #20 Name South 100km GSM XYZ ParameterKey FSOUTH100KMGSM Description The location of the South 100 km point in GSM coordinates (cartesian XYZ components) based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units km CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSM Structure Size 3 Element Name FSOUTH100KMGSM X Qualifier Component.I Index 1 Element Name FSOUTH100KMGSM Y Qualifier Component.J Index 2 Element Name FSOUTH100KMGSM Z Qualifier Component.K Index 3 ValidMin -7000.0 ValidMax 7000.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Positional Parameter #21 Name L Shell ParameterKey FLSHELL Description The dimensionless McIlwain L-Shell Parameter based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. ValidMin 0.0 ValidMax 50.0 FillValue -1.0E31 Support SupportQuantity Other Parameter #22 Name Inv Lat ParameterKey FINVLAT Description Spacecraft invariant magnetic latitude based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units deg ValidMin 0.0 ValidMax 90.0 FillValue -1.0E31 Support Qualifier DirectionAngle.ElevationAngle SupportQuantity Positional Parameter #23 Name Dipole Radius ParameterKey FDIPOLERADIUS Description Dipole magnetic radial distance based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units km ValidMin 6380.0 ValidMax 127600.0 FillValue -1.0E31 Support SupportQuantity Other Parameter #24 Name Dipole Lat ParameterKey FDIPOLELAT Description Dipole magnetic latitude based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units deg ValidMin -90.0 ValidMax 90.0 FillValue -1.0E31 Support Qualifier DirectionAngle.ElevationAngle SupportQuantity Other Parameter #25 Name S/C ECD Lat ParameterKey FSCLATECD Description Spacecraft latitude in the eccentric dipole frame based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units deg ValidMin -90.0 ValidMax 90.0 FillValue -1.0E31 Support Qualifier DirectionAngle.ElevationAngle SupportQuantity Positional Parameter #26 Name LT GEO ParameterKey FLTGEO Description Magnetic local time in the geographic coordinates frame. Units hr CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName GEO ValidMin 0.0 ValidMax 24.0 FillValue -1.0E31 Support Qualifier DirectionAngle.AzimuthAngle SupportQuantity Positional Parameter #27 Name LT ECD ParameterKey FLTECD Description Magnetic local time in the eccentric dipole (ECD) frame based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units hr CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName ECD ValidMin 0.0 ValidMax 24.0 FillValue -1.0E31 Support Qualifier DirectionAngle.AzimuthAngle SupportQuantity Positional Parameter #28 Name LT Equatorial ParameterKey FLTEQU Description Equatorial mapped magnetic local time in the eccentric dipole (ECD) frame based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units hr ValidMin 0.0 ValidMax 24.0 FillValue -1.0E31 Support Qualifier DirectionAngle.AzimuthAngle SupportQuantity Other Parameter #29 Name Solar Zenith ParameterKey FSOLARZENITHCOS Description Solar zenith angle cosine. Units deg ValidMin -1.0 ValidMax 1.0 FillValue -1.0E31 Support Qualifier DirectionAngle.ElevationAngle SupportQuantity Other Parameter #30 Name Loss Cone ParameterKey FLOSSCONE Description Particle loss cone angle based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units deg ValidMin 0.0 ValidMax 90.0 FillValue -1.0E31 Support SupportQuantity Other Parameter #31 Name Dipole Tilt ParameterKey FDIPOLETILT Description Magnetic dipole tilt angle based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units deg ValidMin 0.0 ValidMax 90.0 FillValue -1.0E31 Support SupportQuantity Other Parameter #32 Name Dipole Offset XYZ ParameterKey FDIPOLEOFFSET Description Magnetic dipole displacement (XYZ components) based on the International Geomagnetic Reference Field (IGRF) 2005.0 adjusted for the relevant date by means of the IGRF secular variation coefficients. Units km Structure Size 3 Element Name FDIPOLEOFFSET X Qualifier Component.I Index 1 Element Name FDIPOLEOFFSET Y Qualifier Component.J Index 2 Element Name FDIPOLEOFFSET Z Qualifier Component.K Index 3 ValidMin -1000.0 ValidMax 1000.0 FillValue -1.0E31 Support Qualifier Vector SupportQuantity Other Parameter #33 Name DataFile ID ParameterKey NDATAFILEID Description TWINS DataFile ID Caveats DataFile ID as used in TWINS database storage ValidMin 0.0 ValidMax 3.23786E-319 FillValue -1.0E31 Support SupportQuantity Other