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  <Version>2.3.2</Version>
  <NumericalData>
    <ResourceID>spase://NASA/NumericalData/STEREO-B/IMPACT/SWEA/L1/PT2S</ResourceID>
    <ResourceHeader>
      <ResourceName>STEREO-B In-Situ Measurements of Particles and CME Transients (IMPACT) Solar Wind Electron Analyzer (SWEA) 3-Dimensional Electron Distributions, Burst Mode, Level 1 (L1), 2 s Data</ResourceName>
      <ReleaseDate>2021-04-27T15:38:11Z</ReleaseDate>
      <Description>The file contains Level 1 3D electron distributions in burst mode from the In-situ Measurements of Particles and CME Transients, IMPACT, SWEA instrument on the STEREO Behind spacecraft. For important usage caveats see https://cdaweb.gsfc.nasa.gov/stereo_swea_caveats.html.</Description>
      <Acknowledgement>Please acknowledge the Principal Investigator J.G. Luhmann for use of the Data</Acknowledgement>
      <Contact>
        <PersonID>spase://SMWG/Person/Janet.G.Luhmann</PersonID>
        <Role>PrincipalInvestigator</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/Peter.Schroeder</PersonID>
        <Role>DataProducer</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/Robert.M.Candey</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/Lee.Frost.Bargatze</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <InformationURL>
        <Name>STEREO IMPACT Instrument web site, UCB</Name>
        <URL>http://sprg.ssl.berkeley.edu/impact/</URL>
        <Description>STEREO In-Situ Measurements of Particles and CME Transients, IMPACT, instrument experiment and data description web site, hosted by University of California, Berkeley</Description>
        <Language>en</Language>
      </InformationURL>
      <InformationURL>
        <Name>STEREO IMPACT SWEA Data Caveats web page, GSFC</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/stereo_swea_caveats.html</URL>
        <Description>STEREO In-Situ Measurements of Particles and CME Transients, IMPACT, Solar Wind Electron Analyzer, SWEA, Data Caveats web page, hosted by NASA GSFC</Description>
        <Language>en</Language>
      </InformationURL>
      <InformationURL>
        <Name>NSSDC Master Catalog, STEREO B, IMPACT instrument</Name>
        <URL>https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2006-047B-03</URL>
        <Description>General information concerning the STEREO B, In-Situ Measurements of Particles and CME Transients, IMPACT, instrument</Description>
        <Language>en</Language>
      </InformationURL>
      <PriorID>spase://VSPO/NumericalData/P_STEREO-B_HDR_IMPACT_SWEA_2sec_3DBurstMode_Distributions</PriorID>
      <PriorID>spase://VSPO/NumericalData/STEREO-B/IMPACT/SWEA/PT2S</PriorID>
      <PriorID>spase://VSPO/NumericalData/STEREO-B/IMPACT/SWEA/L1/PT2S</PriorID>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>FTPS from SPDF (not with most browsers)</Name>
        <URL>ftps://spdf.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/swea_disb/</URL>
        <Description>Access to Data in CDF Format via ftp from SPDF</Description>
      </AccessURL>
      <AccessURL>
        <Name>HTTPS from SPDF</Name>
        <URL>https://spdf.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/swea_disb/</URL>
        <Description>Access to Data in CDF Format via http from SPDF</Description>
      </AccessURL>
      <AccessURL>
        <Name>CDAWeb</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=STB_L1_SWEA_DISB&amp;index=sp_phys</URL>
        <ProductKey>STB_L1_SWEA_DISB</ProductKey>
        <Description>Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb</Description>
      </AccessURL>
      <Format>CDF</Format>
      <Encoding>None</Encoding>
      <Acknowledgement>Please acknowledge the Principal Investigator J.G. Luhmann. Please acknowledge the Data Providers and CDAWeb when using these Data.</Acknowledgement>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>CDAWeb HAPI Server</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/hapi</URL>
        <Style>HAPI</Style>
        <ProductKey>STB_L1_SWEA_DISB</ProductKey>
        <Description>Web Service to this product using the HAPI interface.</Description>
      </AccessURL>
      <Format>CSV</Format>
      <Acknowledgement>Please acknowledge the Principal Investigator J.G. Luhmann. Please acknowledge the Data Providers and CDAWeb when using these Data.</Acknowledgement>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/STEREO/IMPACT</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>Download of STEREO-B IMPACT/SWEA Level 1 data</Name>
        <URL>http://stereo.ssl.berkeley.edu/L1_data.php</URL>
        <Description>A web site hosting the STEREO IMPACT Level 1 data</Description>
      </AccessURL>
      <Format>CDF</Format>
    </AccessInformation>
    <ProcessingLevel>Calibrated</ProcessingLevel>
    <InstrumentID>spase://SMWG/Instrument/STEREO-B/IMPACT/SWEA</InstrumentID>
    <MeasurementType>ElectricField</MeasurementType>
    <MeasurementType>EnergeticParticles</MeasurementType>
    <MeasurementType>InstrumentStatus</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>2006-10-28T20:05:11.000</StartDate>
        <StopDate>2014-02-26T22:51:47.000</StopDate>
      </TimeSpan>
      <Cadence>PT2S</Cadence>
    </TemporalDescription>
    <ObservedRegion>Heliosphere.Remote1AU</ObservedRegion>
    <Caveats>Since commissioning, the SWEA instruments on both STEREO spacecraft have registered difficult to characterize degradations in the solar wind core electron energies, probably due to charging effects. The nature of the degradations are such that the data are not reliable for electron measurements below 45 eV. However, halo and higher energy electrons are unaffected. Versions 4 and higher of the SWEA 3D distribution data products have these lower energies removed. Similarly, Versions 4 and higher of the SWEA pitch angle distribution products also remove these energies. Use of the SWEA pitch angle distributions for most purposes, for example, higher energy heat flux pitch angle distribbutions, PADs, should be largely unaffected. For more information regarding these issues, please contact Peter Schroeder, peters@ssl.berkeley.edu. If you have downloaded Version 3 or earlier Files, those files contain unreliable data below 45 eV and should be replaced with Version 4 files. Note that if the interpretation of these data become a significant focus in your work, you should obtain explicit prior permission from the PI of the experiment before publication.</Caveats>
    <Parameter>
      <Name>Epoch Time</Name>
      <ParameterKey>Epoch</ParameterKey>
      <Description>Epoch Time Tag, time since 0 AD, interval centered</Description>
      <Cadence>PT2S</Cadence>
      <Units>ms</Units>
      <UnitsConversion>1.0e-3&gt;s</UnitsConversion>
      <RenderingHints>
        <AxisLabel>Epoch</AxisLabel>
      </RenderingHints>
      <ValidMin>01-Jan-1990 00:00:00.000</ValidMin>
      <ValidMax>31-Dec-2020 00:00:00.000</ValidMax>
      <FillValue>31-Dec-9999 23:59:59.999</FillValue>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Electron Count Distribution, Time Interval</Name>
      <Set>Time series defined by using: EPOCH</Set>
      <ParameterKey>SWEADistInterval</ParameterKey>
      <Description>Electron Three-Dimensional Count Distribution, data collection time Interval</Description>
      <Cadence>PT2S</Cadence>
      <Units>s</Units>
      <RenderingHints>
        <AxisLabel>Dist Time Interval</AxisLabel>
        <ValueFormat>E13.6</ValueFormat>
      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>100000.0</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>SWEA Instrument Mode ID</Name>
      <Set>Time series defined by using: EPOCH</Set>
      <ParameterKey>SWEAModeID</ParameterKey>
      <Description>Solar Wind Electron Analyzer, SWEA, Instrument Mode ID</Description>
      <Cadence>PT2S</Cadence>
      <RenderingHints>
        <AxisLabel>SWEA Mode</AxisLabel>
        <ValueFormat>I2</ValueFormat>
      </RenderingHints>
      <ValidMin>-127</ValidMin>
      <ValidMax>127</ValidMax>
      <FillValue>-128</FillValue>
      <Support>
        <Qualifier>Scalar</Qualifier>
        <SupportQuantity>InstrumentMode</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Electron Count Distribution, Angle Bins</Name>
      <ParameterKey>Angle_Bins</ParameterKey>
      <Description>Electron Count Distribution, 80 Angle Bins</Description>
      <Cadence>PT2S</Cadence>
      <RenderingHints>
        <AxisLabel>Angle Bin</AxisLabel>
        <ValueFormat>I3</ValueFormat>
      </RenderingHints>
      <Structure>
        <Size>80</Size>
      </Structure>
      <ValidMin>0</ValidMin>
      <ValidMax>80</ValidMax>
      <FillValue>4294967295</FillValue>
      <Support>
        <Qualifier>Array</Qualifier>
        <SupportQuantity>Other</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Electron 3D Energy-Angle Count Distribution</Name>
      <Set>Time series defined by using: EPOCH</Set>
      <ParameterKey>Distribution</ParameterKey>
      <Description>Electron Three-Dimensional Count Distribution, Energy versus Angle display, do not use energies below 45 eV.

* Column 1 Labels from ENERGY: ["Dist @ 1790 eV","Dist @ 1260 eV","Dist @ 883 eV","Dist @ 621 eV","Dist @ 437 eV","Dist @ 307 eV","Dist @ 216 eV","Dist @ 152 eV","Dist @ 107 eV","Dist @ 75.0 eV","Dist @ 52.7 eV","Dist @ 37.1 eV","Dist @ 26.0 eV","Dist @ 18.3 eV","Dist @ 12.9 eV","Dist @ 9.05 eV"].
* Column 2 Labels from ANGLE_BINS: ["Dist @ Angle 1","Dist @ Angle 2","Dist @ Angle 3","Dist @ Angle 4","Dist @ Angle 5","Dist @ Angle 6","Dist @ Angle 7","Dist @ Angle 8","Dist @ Angle 9","Dist @ Angle 10","Dist @ Angle 11","Dist @ Angle 12","Dist @ Angle 13","Dist @ Angle 14","Dist @ Angle 15","Dist @ Angle 16","Dist @ Angle 17","Dist @ Angle 18","Dist @ Angle 19","Dist @ Angle 20","Dist @ Angle 21","Dist @ Angle 22","Dist @ Angle 23","Dist @ Angle 24","Dist @ Angle 25","Dist @ Angle 26","Dist @ Angle 27","Dist @ Angle 28","Dist @ Angle 29","Dist @ Angle 30","Dist @ Angle 31","Dist @ Angle 32","Dist @ Angle 33","Dist @ Angle 34","Dist @ Angle 35","Dist @ Angle 36","Dist @ Angle 37","Dist @ Angle 38","Dist @ Angle 39","Dist @ Angle 40","Dist @ Angle 41","Dist @ Angle 42","Dist @ Angle 43","Dist @ Angle 44","Dist @ Angle 45","Dist @ Angle 46","Dist @ Angle 47","Dist @ Angle 48","Dist @ Angle 49","Dist @ Angle 50","Dist @ Angle 51","Dist @ Angle 52","Dist @ Angle 53","Dist @ Angle 54","Dist @ Angle 55","Dist @ Angle 56","Dist @ Angle 57","Dist @ Angle 58","Dist @ Angle 59","Dist @ Angle 60","Dist @ Angle 61","Dist @ Angle 62","Dist @ Angle 63","Dist @ Angle 64","Dist @ Angle 65","Dist @ Angle 66","Dist @ Angle 67","Dist @ Angle 68","Dist @ Angle 69","Dist @ Angle 70","Dist @ Angle 71","Dist @ Angle 72","Dist @ Angle 73","Dist @ Angle 74","Dist @ Angle 75","Dist @ Angle 76","Dist @ Angle 77","Dist @ Angle 78","Dist @ Angle 79","Dist @ Angle 80"].</Description>
      <Cadence>PT2S</Cadence>
      <RenderingHints>
        <DisplayType>Spectrogram</DisplayType>
        <ValueFormat>E13.6</ValueFormat>
      </RenderingHints>
      <Structure>
        <Size>16 80</Size>
      </Structure>
      <FillValue>-1.0e+31</FillValue>
      <Particle>
        <ParticleType>Electron</ParticleType>
        <Qualifier>Differential</Qualifier>
        <Qualifier>Array</Qualifier>
        <ParticleQuantity>NumberFlux</ParticleQuantity>
      </Particle>
    </Parameter>
    <Parameter>
      <Name>SWEA Bias Voltage</Name>
      <Set>Time series defined by using: EPOCH</Set>
      <ParameterKey>V0</ParameterKey>
      <Description>Solar Wind Electron Analyzer, SWEA, Instrument Bias Voltage, V₀. The bias voltage sweep pattern was altered to reduce low energy electron contributions from unanticipated spacecraft-related secondaries. The voltage bias were originally swept from 1 eV to 2000 eV but the lower limit sweep voltage was later updated to 8 eV.</Description>
      <Cadence>PT2S</Cadence>
      <RenderingHints>
        <AxisLabel>V0</AxisLabel>
        <ValueFormat>I3</ValueFormat>
        <ScaleType>LinearScale</ScaleType>
      </RenderingHints>
      <ValidMin>-127</ValidMin>
      <ValidMax>127</ValidMax>
      <FillValue>-128</FillValue>
      <Field>
        <Qualifier>Magnitude</Qualifier>
        <Qualifier>Scalar</Qualifier>
        <FieldQuantity>Potential</FieldQuantity>
      </Field>
    </Parameter>
    <Parameter>
      <Name>Electron Count Distribution, Energy Bins</Name>
      <ParameterKey>Energy</ParameterKey>
      <Description>Electron Count Distribution, 16 Energy Bins</Description>
      <Cadence>PT2S</Cadence>
      <Units>eV</Units>
      <UnitsConversion>1.602176565e-19&gt;J</UnitsConversion>
      <RenderingHints>
        <AxisLabel>Energy</AxisLabel>
        <ValueFormat>E12.2</ValueFormat>
        <ScaleType>LinearScale</ScaleType>
      </RenderingHints>
      <Structure>
        <Size>16</Size>
      </Structure>
      <ValidMin>1.0</ValidMin>
      <ValidMax>2000.0</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Particle>
        <Qualifier>Differential</Qualifier>
        <Qualifier>Array</Qualifier>
        <ParticleQuantity>Energy</ParticleQuantity>
      </Particle>
    </Parameter>
  </NumericalData>
</Spase>
