<?xml version="1.0" encoding="UTF-8"?>
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   <Version>2.6.0</Version>
   <NumericalData>
      <ResourceID>spase://NOAA/NumericalData/DSCOVR/Ephemeris/Attitude/Definitive/PT5S</ResourceID>
      <ResourceHeader>
         <ResourceName>DSCOVR 3-Axis Stabilized Attitude (Ephemeris) Definitive Data</ResourceName>
         <ReleaseDate>2024-06-20T12:34:56.789</ReleaseDate>
         <RevisionHistory>
            <RevisionEvent>
               <ReleaseDate>2021-04-27T17:52:57</ReleaseDate>
               <Note>Only known prior ReleaseDate of the metadata</Note>
            </RevisionEvent>
            <RevisionEvent>
               <ReleaseDate>2024-06-20T12:34:56.789</ReleaseDate>
               <Note>Replaced StopDate with a RelativeStopDate equal to -P1M, SPASE versioned up to 2.6.0, LFB 20240620</Note>
            </RevisionEvent>
         </RevisionHistory>
         <Description>DSCOVR 3-Axis Stabilized Definitive Attitude Data File, 5 s Time Resolution. Convention: Intrinsic Rotations applied in Yaw, Pitch, Roll Order. Extended Kalman Filter applied to Ground-Based Solution during Normal Operations. Onboard Computer, OBC, Solution used during Calibration Maneuvers.</Description>
         <Acknowledgement>A. Szabo</Acknowledgement>
         <Contact>
            <PersonID>spase://SMWG/Person/Adam.Szabo</PersonID>
            <Role>PrincipalInvestigator</Role>
         </Contact>
         <Contact>
            <PersonID>spase://SMWG/Person/Robert.E.McGuire</PersonID>
            <Role>MetadataContact</Role>
         </Contact>
         <Contact>
            <PersonID>spase://SMWG/Person/Lee.Frost.Bargatze</PersonID>
            <Role>MetadataContact</Role>
         </Contact>
         <InformationURL>
            <Name>Deep Space Climate Observatory, DSCOVR, Web Page, NESDIS, NOAA</Name>
            <URL>https://www.nesdis.noaa.gov/content/dscovr-deep-space-climate-observatory</URL>
            <Description>Deep Space Climate Observatory, DSCOVR, Web Page hosted by the National Environmental Satellite, Data, and Information Service, NESDIS, National Oceanic and Atmospheric Administration, NOAA</Description>
         </InformationURL>
         <PriorID>spase://VSPO/NumericalData/DSCOVR/Ephemeris/Attitude/Definitive/PT5S</PriorID>
      </ResourceHeader>
      <AccessInformation>
         <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
         <Availability>Online</Availability>
         <AccessRights>Open</AccessRights>
         <AccessURL>
            <Name>FTPS from SPDF (not with most browsers)</Name>
            <URL>ftps://spdf.gsfc.nasa.gov/pub/data/dscovr/orbit/def_at/</URL>
            <Description>In CDF via ftp from SPDF.</Description>
         </AccessURL>
         <AccessURL>
            <Name>HTTPS from SPDF</Name>
            <URL>https://spdf.gsfc.nasa.gov/pub/data/dscovr/orbit/def_at/</URL>
            <Description>In CDF via http from SPDF.</Description>
         </AccessURL>
         <AccessURL>
            <Name>CDAWeb</Name>
            <URL>https://cdaweb.gsfc.nasa.gov/index.html/</URL>
            <ProductKey>DSCOVR_AT_DEF</ProductKey>
            <Description>Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb</Description>
         </AccessURL>
         <Format>CDF</Format>
         <Encoding>None</Encoding>
         <Acknowledgement>A. Szabo. Please acknowledge the data providers and CDAWeb when using these data.</Acknowledgement>
      </AccessInformation>
      <AccessInformation>
         <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
         <Availability>Online</Availability>
         <AccessRights>Open</AccessRights>
         <AccessURL>
            <Name>CDAWeb HAPI Server</Name>
            <URL>https://cdaweb.gsfc.nasa.gov/hapi</URL>
            <Style>HAPI</Style>
            <ProductKey>DSCOVR_AT_DEF</ProductKey>
            <Description>Web Service to this product using the HAPI interface.</Description>
         </AccessURL>
         <Format>CSV</Format>
         <Acknowledgement>A. Szabo. Please acknowledge the data providers and CDAWeb when using these data.</Acknowledgement>
      </AccessInformation>
      <ProcessingLevel>Calibrated</ProcessingLevel>
      <InstrumentID>spase://SMWG/Instrument/DSCOVR/Ephemeris</InstrumentID>
      <MeasurementType>Ephemeris</MeasurementType>
      <TemporalDescription>
         <TimeSpan>
            <StartDate>2015-02-11T00:00:00.000</StartDate>
            <RelativeStopDate>-P1M</RelativeStopDate>
         </TimeSpan>
         <Cadence>PT5S</Cadence>
      </TemporalDescription>
      <ObservedRegion>Heliosphere</ObservedRegion>
      <ObservedRegion>Heliosphere.NearEarth</ObservedRegion>
      <ObservedRegion>Heliosphere.Inner</ObservedRegion>
      <Parameter>
         <Name>Epoch Time, since 0 A.D.</Name>
         <ParameterKey>Epoch</ParameterKey>
         <Description>Epoch Time, Milliseconds since 0 A.D.</Description>
         <Caveats>This parameter exhibits an increasing monotonic progression.</Caveats>
         <Cadence>PT5S</Cadence>
         <Units>ms</Units>
         <UnitsConversion>1e-3&gt;s</UnitsConversion>
         <RenderingHints>
            <AxisLabel>Epoch</AxisLabel>
            <ValueFormat>E14.8</ValueFormat>
         </RenderingHints>
         <ValidMin>11-Feb-2015 00:00:00.000</ValidMin>
         <ValidMax>11-Feb-2065 00:00:00.000</ValidMax>
         <FillValue>31-Dec-9999 23:59:59.999</FillValue>
         <Support>
            <SupportQuantity>Temporal</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Time PB5</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>Time_PB5</ParameterKey>
         <Description>Time in PB5 Format: Year, Day, Milliseconds, Observation Time</Description>
         <Cadence>PT5S</Cadence>
         <Structure>
            <Size>3</Size>
            <Element>
               <Name>Year</Name>
               <Index>1</Index>
               <Units>year</Units>
               <ValidMin>2015</ValidMin>
               <ValidMax>2065</ValidMax>
            </Element>
            <Element>
               <Name>Day of Year</Name>
               <Index>2</Index>
               <Units>d</Units>
               <ValidMin>0</ValidMin>
               <ValidMax>366</ValidMax>
            </Element>
            <Element>
               <Name>Elapsed milliseconds of day</Name>
               <Index>3</Index>
               <Units>ms</Units>
               <ValidMin>0</ValidMin>
               <ValidMax>86400000</ValidMax>
            </Element>
         </Structure>
         <FillValue>-2147483647</FillValue>
         <Support>
            <SupportQuantity>Temporal</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Yaw Angle, J2000</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>J2000_Yaw</ParameterKey>
         <Description>Spacecraft Yaw Angle, J2000 Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>J2000</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Yaw J2000</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.AzimuthAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Pitch Angle, J2000</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>J2000_Pitch</ParameterKey>
         <Description>Spacecraft Pitch Angle, J2000 Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>J2000</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Pitch J2000</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.ElevationAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Roll Angle, J2000</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>J2000_Roll</ParameterKey>
         <Description>Spacecraft Roll Angle, J2000 Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>J2000</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Roll J2000</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.AzimuthAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Yaw Angle, J2000 GEI</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>GCI_Yaw</ParameterKey>
         <Description>Spacecraft Yaw Angle, Geocentric Inertial, J2000 GEI Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>GEI</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Yaw GCI</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.AzimuthAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Pitch Angle, J2000 GEI</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>GCI_Pitch</ParameterKey>
         <Description>Spacecraft Pitch Angle, Geocentric Inertial, J2000 GEI Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>GEI</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Pitch GCI</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.ElevationAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Roll Angle, J2000 GEI</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>GCI_Roll</ParameterKey>
         <Description>Spacecraft Roll Angle, Geocentric Inertial, J2000 GEI Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>GEI</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Roll GCI</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.AzimuthAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Yaw Angle, GSE</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>GSE_Yaw</ParameterKey>
         <Description>Spacecraft Yaw Angle, Geocentric Solar Ecliptic, GSE Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>GSE</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Yaw GSE</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.AzimuthAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Pitch Angle, GSE</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>GSE_Pitch</ParameterKey>
         <Description>Spacecraft Pitch Angle, Geocentric Solar Ecliptic, GSE Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>GSE</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Pitch GSE</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.ElevationAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Roll Angle, GSE</Name>
         <Set>Time series defined by using: EPOCH</Set>
         <ParameterKey>GSE_Roll</ParameterKey>
         <Description>Spacecraft Roll Angle, Geocentric Solar Ecliptic, GSE Coordinates</Description>
         <Cadence>PT5S</Cadence>
         <Units>rad</Units>
         <CoordinateSystem>
            <CoordinateRepresentation>Spherical</CoordinateRepresentation>
            <CoordinateSystemName>GSE</CoordinateSystemName>
         </CoordinateSystem>
         <RenderingHints>
            <DisplayType>TimeSeries</DisplayType>
            <AxisLabel>Roll GSE</AxisLabel>
            <ValueFormat>F10.6</ValueFormat>
            <ScaleMin>-3.14159</ScaleMin>
            <ScaleMax>3.14159</ScaleMax>
         </RenderingHints>
         <ValidMin>-3.14159</ValidMin>
         <ValidMax>3.14159</ValidMax>
         <FillValue>-1.0e+31</FillValue>
         <Support>
            <Qualifier>DirectionAngle.AzimuthAngle</Qualifier>
            <SupportQuantity>Positional</SupportQuantity>
         </Support>
      </Parameter>
   </NumericalData>
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