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    <ResourceID>spase://NASA/NumericalData/ACE/EPAM/RATES/PT1H</ResourceID>
    <NamingAuthority>NASA</NamingAuthority>
    <ResourceType>NumericalData</ResourceType>
    <ResourceHeader>
      <ResourceName>ACE Electron Proton Alpha Monitor (EPAM) Hourly Count Rate Data</ResourceName>
      <DOI>https://doi.org/10.48322/w8fp-gs25</DOI>
      <ReleaseDate>2025-12-04T13:28:23Z</ReleaseDate>
      <RevisionHistory>
        <RevisionEvent>
          <ReleaseDate>2020-07-07T21:14:14</ReleaseDate>
          <Note>Only known prior ReleaseDate of the metadata</Note>
        </RevisionEvent>
        <RevisionEvent>
          <ReleaseDate>2022-08-04T12:34:56.789</ReleaseDate>
          <Note>Added DOI and PublicationInfo minted by JMW, updated the DataProducer Person to Dennis K. Haggerty, updated one InformationURL URL, metadata updated to SPASE 2.4.1, reviewed by LFB 20220730</Note>
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        <RevisionEvent>
          <ReleaseDate>2025-09-30T14:27:17Z</ReleaseDate>
          <Note>Updated PublishedBy name to match ROR Registry. 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>2025-12-04T13:28:23Z</ReleaseDate>
          <Note>Added MetadataRightsList. Updated to 2.7.1. ZCB</Note>
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      <Description>This descriptor identifies an ensemble of 8 data sets of EPAM count rates averaged over 1-hour intervals in each of several energy bins. One data set (PG65) has spin-averaged rates while the other 7 have rates in each of 4 or 8 spin sectors. Each of the 7 sectored data sets is specific to a given one of the several EPAM instruments (apertures). Each of the 8 data sets is individually described in the VHO/VEPO interface at https://vho.gsfc.nasa.gov.</Description>
      <Acknowledgement>Thomas P. Armstrong, Fundamental Technologies LLC</Acknowledgement>
      <PublicationInfo>
        <Authors>Gold, R.E., Roelof, E.C., Krimigis, S., Haggerty, D., Armstrong, T.P., Manweiler, J.W., and J.D. Patterson</Authors>
        <PublicationDate>2022-01-01T00:00:00</PublicationDate>
        <PublishedBy>Space Physics Data Facility</PublishedBy>
      </PublicationInfo>
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        <PersonID>spase://SMWG/Person/Dennis.K.Haggerty</PersonID>
        <Role>DataProducer</Role>
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      <Contact>
        <PersonID>spase://SMWG/Person/James.M.Weygand</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/Lee.Frost.Bargatze</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <InformationURL>
        <Name>EPAM Overview at ASC</Name>
        <URL>https://izw1.caltech.edu/ACE/ASC/level2/epam_l2desc.html</URL>
        <Description>Overview of EPAM instrument, terminology, species and energy bins</Description>
      </InformationURL>
      <InformationURL>
        <Name>Explanation of print-groups and CSV file nomenclature.</Name>
        <URL>http://data.ftecs.com/VHO/VEPO/ulysses_hiscale/metadata/explanations/</URL>
        <Description>The Explanation.html page at Fundamental Technologies (FTECS) describes how the numeric data from the Ulysses HISCALE instrument are divided into different print-groups (referred to as "data sets" above), the nomenclature of the ASCII-based comma-separated variable (CSV) files, and how those files can be accessed. Owing to their great similarities, "this file works for both EPAM and HISCALE." - TPA</Description>
      </InformationURL>
      <PriorID>spase://VSPO/NumericalData/ACE/EPAM/RATES/PT1H</PriorID>
      <PriorID>spase://VSPO/NumericalData/ACE/EPAM/RATES/PT1H</PriorID>
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    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/FTECS</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>FTECS site</Name>
        <URL>http://data.ftecs.com/VHO/VEPO/ace_epam/rates/Hourly/</URL>
        <Description>Parent directory containing the hourly count rates for the ACE/EPAM instrument for the entire mission.</Description>
      </AccessURL>
      <Format>Text</Format>
      <Encoding>ASCII</Encoding>
      <Acknowledgement>Thomas P. Armstrong, Fundamental Technologies LLC</Acknowledgement>
    </AccessInformation>
    <InstrumentID>spase://SMWG/Instrument/ACE/EPAM</InstrumentID>
    <MeasurementType>EnergeticParticles</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>1990-01-01T00:00:00.000</StartDate>
        <RelativeStopDate>-P1Y</RelativeStopDate>
      </TimeSpan>
      <Cadence>PT1H</Cadence>
    </TemporalDescription>
    <ObservedRegion>Heliosphere.NearEarth</ObservedRegion>
  </NumericalData>
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