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   <Version>2.7.1</Version>
   <Catalog>
      <ResourceID>spase://NASA/Catalog/STEREO/IMPACT/LET/SEP</ResourceID>
      <ResourceHeader>
         <ResourceName>Automatically generated event list for STEREO-LET</ResourceName>
         <ReleaseDate>2026-03-01T18:13:51</ReleaseDate>
         <Description>The automatically generated event list for the STEREO Low Energy Telescope (LET) identifies Solar Energetic Particle (SEP) events and Co-rotating Interaction Regions (CIRs) based on specific proton rate thresholds and spectral characteristics.
Automatically generated event list for STEREO-LET, requiring that 3-hour averaged 1.8-3.6 MeV proton rate exceeds 5x10^-4 particles/(cm^2 sr s MeV) 
Peak Proton Intensities often occur at different times for each energy bin. Proton fluences have had a constant background assumed to be 
2.3x10^-5 particles/(cm^2 sr s MeV) subtracted. The &quot;2-Point Index&quot; is obtained from the 1.8-3.6 and 4-6 MeV proton FLUENCES. The He/H ratio is that of the 1.8-3.6 MeV/n proton and He FLUENCES, where a constant background of 1x10^-5 particles/(cm^2 sr s MeV/n) has been subtracted from the He.  Uncertainties in the index and He/H are statistical errors ONLY.
 Event Types are tentative identifications ONLY, automatically determined based on spectral hardness and He/H ratio.  Events with an added &quot;?&quot; fall within one standard deviation of the chosen boundary between SEPs and CIRs in at least one parameter (index or He/H).  An &quot;e-&quot; after the type indicates that the peak of an SEPT electron event falls between the event start and end times.</Description>
         <Contact>
            <PersonID>spase://SMWG/Person/Andrew.J.Davis</PersonID>
            <Role>Publisher</Role>
         </Contact>
         <Contact>
            <PersonID>spase://SMWG/Person/Olga.y.Uritskaya</PersonID>
            <Role>MetadataContact</Role>
         </Contact>
      </ResourceHeader>
      <AccessInformation>
         <RepositoryID>spase://SMWG/Repository/CALTECH</RepositoryID>
         <AccessURL>
            <URL>https://izw1.caltech.edu/STEREO/DATA/LET/Public/EventList/LETEventList.txt</URL>
         </AccessURL>
         <Format>Text.ASCII</Format>
      </AccessInformation>
      <InstrumentID>spase://SMWG/Instrument/STEREO-A/IMPACT/LET</InstrumentID>
      <PhenomenonType>EnergeticSolarParticleEvent</PhenomenonType>
      <TimeSpan>
         <StartDate>2007-01-05T12:00:00</StartDate>
         <StopDate>2011-06-19T12:00:00</StopDate>
      </TimeSpan>
      <Parameter>
         <Name>Evt #</Name>
         <Description>Event number</Description>
         <Support>
            <SupportQuantity>Housekeeping</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Start time</Name>
         <Support>
            <SupportQuantity>Temporal</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>End time</Name>
         <Support>
            <SupportQuantity>Temporal</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Peak Proton Intensities p/(cm2sr s MeV) 1.8 - 3.6</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Peak Proton Intensities p/(cm2sr s MeV) 4 - 6</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Peak Proton Intensities p/(cm2sr s MeV) 6 - 10</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Peak Proton Intensities p/(cm2sr s MeV)  10-15</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Proton Fluences: p/(cm^2 sr MeV)  1.8 - 3.6</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Proton Fluences: p/(cm^2 sr MeV) 4 - 6</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Proton Fluences: p/(cm^2 sr MeV) 6 - 10</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Proton Fluences: p/(cm^2 sr MeV) 10 - 15</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>2-Point Index (Value +/-)</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>He/H @1.8-3.6 (Value  +/-)</Name>
         <Support>
            <SupportQuantity>Other</SupportQuantity>
         </Support>
      </Parameter>
      <Parameter>
         <Name>Type</Name>
         <Support>
            <SupportQuantity>Remark</SupportQuantity>
         </Support>
      </Parameter>
   </Catalog>
</Spase>
