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  <NumericalData>
    <ResourceID>spase://NASA/NumericalData/IBEX/Lo/TOF_Histograms</ResourceID>
    <NamingAuthority>NASA</NamingAuthority>
    <ResourceType>NumericalData</ResourceType>
    <ResourceHeader>
      <ResourceName>IBEX-Lo TOF Histograms</ResourceName>
      <DOI>https://doi.org/10.48322/rqbx-kk51</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>
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        <RevisionEvent>
          <ReleaseDate>2025-12-04T13:29:29Z</ReleaseDate>
          <Note>Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB</Note>
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      <Description>Each table (CSV file) captures the numbers 
of counts of arriving energetic neutral atoms, as integrated 
over a full 8-day orbit, for a single IBEX-Lo energy step, 
for one of three categories of species (hydrogen, oxygen plus
carbon, and hydrogen plus oxygen plus carbon, the latter 
two being labelled "Oxygen" and "All," respectively in file
names).  Numbers of counts are given in 1024 0.33-nanosecond 
TOF bins ranging from 0-0.33 ns to 339.67-340 ns.  Each table 
is CSV-formatted Excel.  Each subdirectory is for a given 
energy band and has the tables (files) for each of several 
orbits for each of the three species categories.</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/mass_spectrometer_data/Maps_TOF_description.txt</URL>
        <Description>This file was created by the IBEX team.</Description>
      </InformationURL>
      <PriorID>spase://VEPO/NumericalData/IBEX/Lo/TOF_Histograms</PriorID>
      <PriorID>spase://VSPO/NumericalData/IBEX/Lo/TOF_Histograms</PriorID>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <RightsList>
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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/mass_spectrometer_data/TOF_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/mass_spectrometer_data/TOF_histograms//</URL>
        <Description>In CDF via HTTP from SPDF</Description>
      </AccessURL>
      <Format>Text</Format>
      <DataExtent>
        <Quantity>10</Quantity>
        <Units>MB</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 time of flight histogram</Name>
      <Description>ENA time of flight histogram</Description>
      <Units>Counts</Units>
      <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>
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