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    <ResourceID>spase://NASA/NumericalData/Apollo12-LM/SWS/PT1HR</ResourceID>
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    <ResourceHeader>
      <ResourceName>Apollo 12 Solar Wind Measurements at the Lunar Surface 1-HR Data</ResourceName>
      <DOI>https://doi.org/10.48322/vars-pj10</DOI>
      <ReleaseDate>2025-12-04T13:28:29Z</ReleaseDate>
      <RevisionHistory>
        <RevisionEvent>
          <ReleaseDate>2021-03-29T17:14:50</ReleaseDate>
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          <ReleaseDate>2023-07-30T12:34:56.789</ReleaseDate>
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          <ReleaseDate>2025-09-30T14:27:20Z</ReleaseDate>
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          <ReleaseDate>2025-12-04T13:28:29Z</ReleaseDate>
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      <Description>This data set contains hourly averaged plasma parameters from the Apollo 12 Solar Wind Spectrometer. Four sets of hourly averaged parameters are computed, using as input data -- (1) all fine-time scale parameters (FTSP), (2) all FTSP computed from spectra with small rms error on curve fitting and thermal speeds less than one-half the bulk velocity, (3) all FTSP computed from spectra that satisfy the requirements of criterion 2 as well as having only one flow angle that can be directly measured, and (4) all FTSP computed from spectra that satisfy the requirements of criterion 2 as well as having both flow angles directly measureable. Contained in each of the 4 sets of averages are the proton density, alpha-to-proton ratio, bulk speed, angle of flow, number of spectra, and rms deviations of each average.</Description>
      <Acknowledgement>Please acknowledge NASA Space Physics Data Facility, National Space Science Data Center and the Principal Investigator for data usage.</Acknowledgement>
      <PublicationInfo>
        <Authors>Williams, David, R.</Authors>
        <PublicationDate>2023-01-01T00:00:00</PublicationDate>
        <PublishedBy>Space Physics Data Facility</PublishedBy>
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        <Role>MetadataContact</Role>
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          <Note>CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</Note>
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      <AccessURL>
        <Name>FTPS from SPDF (not with most browsers)</Name>
        <URL>ftps://spdf.gsfc.nasa.gov/pub/data/apollo/apollo12_cdaweb/sws_1hr/</URL>
        <Description>APOLLO12_SWS_1HR</Description>
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      <AccessURL>
        <Name>HTTPS from SPDF</Name>
        <URL>https://spdf.gsfc.nasa.gov/pub/data/apollo/apollo12_cdaweb/sws_1hr/</URL>
        <Description>In CDF via HTTP from SPDF</Description>
      </AccessURL>
      <Format>CDF</Format>
      <Acknowledgement>Please acknowledge the Apollo science team and the CDAWeb team at NASA GSFC/SPDF.</Acknowledgement>
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      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb</RepositoryID>
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      <AccessURL>
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        <URL>https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=APOLLO12_SWS_1HR&amp;index=sp_phys</URL>
        <ProductKey>APOLLO12_SWS_1HR</ProductKey>
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    <InstrumentID>spase://SMWG/Instrument/Apollo12-LM/SWS</InstrumentID>
    <MeasurementType>ThermalPlasma</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>1969-11-19T19:30:00</StartDate>
        <StopDate>1976-03-25T08:30:00</StopDate>
      </TimeSpan>
      <Cadence>PT60M</Cadence>
    </TemporalDescription>
    <ObservedRegion>Heliosphere.NearEarth</ObservedRegion>
    <ObservedRegion>Heliosphere.Inner</ObservedRegion>
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