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  </MetadataRightsList>
  <NumericalData>
    <ResourceID>spase://NASA/NumericalData/IBEX/Lo/Histograms</ResourceID>
    <NamingAuthority>NASA</NamingAuthority>
    <ResourceType>NumericalData</ResourceType>
    <ResourceHeader>
      <ResourceName>IBEX-Lo Histograms</ResourceName>
      <DOI>https://doi.org/10.48322/4qc4-7006</DOI>
      <ReleaseDate>2025-12-04T13:29:29Z</ReleaseDate>
      <RevisionHistory>
        <RevisionEvent>
          <ReleaseDate>2021-03-11T18:39:11Z</ReleaseDate>
          <Note>Only known prior ReleaseDate of the metadata</Note>
        </RevisionEvent>
        <RevisionEvent>
          <ReleaseDate>2025-11-14T16:02:23Z</ReleaseDate>
          <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</Note>
        </RevisionEvent>
        <RevisionEvent>
          <ReleaseDate>2025-12-04T13:29:29Z</ReleaseDate>
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      <Description>Each record captures the number of arriving ENA's
of a specific energy band, coincidence type, species (hydrogen or 
oxygen) and spin phase.  Data for each full ~15s spacecraft spin 
are given at each of 60 spin phases in sequential records, with 
the J2000 right ascension and declination for look directions 
corresponding to each spin phase being given in the corresponding 
record.  Also included in each record are a time tag (seconds since 
00:00 UT of January 6, 1980), the IBEX location, ENA energy band,
species and coincidence type.  Data files are given for each 8-day 
orbit and for each of the 8 IBEX-Lo energy bands.  The data files 
are in ASCII.</Description>
      <Acknowledgement>The IBEX Team</Acknowledgement>
      <PublicationInfo>
        <Authors>McComas, David J.</Authors>
        <PublicationDate>2025-11-14T16:02:23Z</PublicationDate>
        <PublishedBy>Space Physics Data Facility</PublishedBy>
      </PublicationInfo>
      <Contact>
        <PersonID>spase://SMWG/Person/David.J.McComas</PersonID>
        <Role>PrincipalInvestigator</Role>
      </Contact>
      <InformationURL>
        <Name>Readme file at SPDF</Name>
        <URL>https://spdf.gsfc.nasa.gov/pub/data/ibex/release3/lo/time_series/TS_description.txt</URL>
        <Description>This file was created by the IBEX team.</Description>
      </InformationURL>
      <PriorID>spase://VEPO/NumericalData/IBEX/Lo/Histograms</PriorID>
      <PriorID>spase://VSPO/NumericalData/IBEX/Lo/Histograms</PriorID>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <RightsList>
        <Rights>
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          <RightsIdentifierScheme>SPDX</RightsIdentifierScheme>
          <RightsIdentifier>CC0-1.0</RightsIdentifier>
          <RightsURI>https://spdx.org/licenses/CC0-1.0.html</RightsURI>
          <RightsName>Creative Commons Zero v1.0 Universal</RightsName>
          <Note>CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</Note>
        </Rights>
      </RightsList>
      <AccessURL>
        <Name>FTPS from SPDF (not with most browsers)</Name>
        <URL>ftps://spdf.gsfc.nasa.gov/pub/data/ibex/release3/lo/time_series/histograms/</URL>
        <Description>Directory with energy-range-specific subdirectories</Description>
      </AccessURL>
      <AccessURL>
        <Name>HTTPS from SPDF</Name>
        <URL>https://spdf.gsfc.nasa.gov/pub/data/ibex/release3/lo/time_series/histograms/</URL>
        <Description>In CDF via HTTP from SPDF</Description>
      </AccessURL>
      <Format>Text</Format>
      <DataExtent>
        <Quantity>5</Quantity>
        <Units>GB</Units>
        <Per>P1Y</Per>
      </DataExtent>
      <Acknowledgement>The IBEX Team</Acknowledgement>
    </AccessInformation>
    <InstrumentID>spase://SMWG/Instrument/IBEX/Lo</InstrumentID>
    <MeasurementType>NeutralAtomImages</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>2008-12-25T00:00:00</StartDate>
        <StopDate>2009-06-19T00:00:00</StopDate>
        <Note>Data are planned for 6-month releases.  However,
				Release_2 contained only IBEX-Hi map data.  Extensions to later times for this data set may be forthcoming in the future.</Note>
      </TimeSpan>
      <Cadence>PT6M</Cadence>
    </TemporalDescription>
    <ObservedRegion>Heliosphere.Heliosheath</ObservedRegion>
    <Parameter>
      <Name>ENA arrival direction</Name>
      <Description>ENA arrival direction</Description>
      <Units>deg</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Spherical</CoordinateRepresentation>
        <CoordinateSystemName>J2000</CoordinateSystemName>
      </CoordinateSystem>
      <Particle>
        <ParticleType>Atom</ParticleType>
        <ParticleQuantity>ArrivalDirection</ParticleQuantity>
        <AtomicNumber>1</AtomicNumber>
        <AtomicNumber>8</AtomicNumber>
        <EnergyRange>
          <Low>0.01</Low>
          <High>2.0</High>
          <Units>keV</Units>
        </EnergyRange>
      </Particle>
    </Parameter>
    <Parameter>
      <Name>ENA counts</Name>
      <Description>ENA counts of specific energy band, coincidence
type, and spin phase (look direction)</Description>
      <Particle>
        <ParticleType>Atom</ParticleType>
        <ParticleQuantity>Counts</ParticleQuantity>
        <AtomicNumber>1</AtomicNumber>
        <AtomicNumber>8</AtomicNumber>
        <EnergyRange>
          <Low>0.01</Low>
          <High>2.0</High>
          <Units>keV</Units>
        </EnergyRange>
      </Particle>
    </Parameter>
  </NumericalData>
</Spase>
