<?xml version="1.0" encoding="UTF-8"?>

<Spase xmlns="http://www.spase-group.org/data/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.spase-group.org/data/schema http://amda.irap.omp.eu/public/schemas/spase-2_3_1.xsd">

   <Version>2.3.1</Version>
   <NumericalData>
      <ResourceID>spase://CNES/NumericalData/CDPP-AMDA/Helios2/MAG/helios2-mag-corefit</ResourceID>
      <ResourceHeader>
         <ResourceName>corefit : 40s</ResourceName>
         <AlternateName>Helios corefit data product</AlternateName>
         <ReleaseDate>2018-10-12T10:48:29Z</ReleaseDate>
         <Description> 
</Description>                                
       <Acknowledgement>Please acknowledge Helios E2, E3 team and David Stansby in any publication</Acknowledgement>         
      <Contact>       
        <PersonID>spase://CNES/Person/David.Stansby</PersonID> 
        <Role>DataProducer</Role>
      </Contact>
         <InformationURL>
           <Name>Dataset Description</Name>
           <URL>https://www.davidstansby.com/2017/09/18/new-helios-plasma-dataset.html</URL>
           <Description>            
           </Description>
         </InformationURL>
      </ResourceHeader>
      <AccessInformation>

         <RepositoryID>spase://SMWG/Repository/CNES/CDPP-AMDA</RepositoryID>

         <Availability>Online</Availability>
         <AccessRights>Open</AccessRights>
         <AccessURL>
            <Name>AMDA at CDPP</Name>
            <URL>http://amda.cdpp.eu</URL>
         </AccessURL>
         <Format>Text</Format>
         <Acknowledgement/>                   
      </AccessInformation>
     <ProviderName>Helios Data Archive</ProviderName>
    <ProviderResourceName>Helios corefit data product</ProviderResourceName>

      <InstrumentID>spase://CNES/Instrument/CDPP-AMDA/Helios2/MAG</InstrumentID>

      <MeasurementType>MagneticField</MeasurementType>
      <TemporalDescription>
         <TimeSpan>
             <StartDate>1976-01-17T01:42:11Z</StartDate>
             <StopDate>1980-03-08T17:46:32Z</StopDate>
         </TimeSpan>
       <CadenceMin>PT40S</CadenceMin>

       <CadenceMax>PT300S</CadenceMax>         

      </TemporalDescription>
      <ObservedRegion>Heliosphere</ObservedRegion>
      <Caveats>
Mag instrument flag takes the following values: 
* 1: E3 magnetometer data used; 
* 2: E2 magnetometer data used

Magnetic field standard deviation is calculated as sqrt(σ^2Bx + σ^2By + σ^2Bz), with individual standard
deviations taken over the interval that the ion distribution function was measured

</Caveats>
   <Parameter>
   <Name>mag_instr</Name>
   <ParameterKey>helios2_mag_instr</ParameterKey>

      <Description>Instrument flag</Description>

   <Ucd/>

   <Units></Units>

   <UnitsConversion/> 
    <FillValue>-1</FillValue>      
</Parameter>    
      <Parameter>
         <Name>sigma b</Name>
         <ParameterKey>helios2_b_std</ParameterKey>
         <Description/>
         <Ucd/>
         <Units>nT</Units>
         <UnitsConversion/>
</Parameter>          
      <Parameter>

         <Name>b_se</Name>

         <ParameterKey>helios2_b_rtn</ParameterKey>

         <Description>magnetic field in solar ecliptic spacecraft centered coordinates (SE)</Description>

         <Ucd/>
         <Units>nT</Units>
         <UnitsConversion/>
         <Structure>
            <Size>3</Size>
            <Element>
               <Name>r</Name>
               <Index>1</Index>
               <ParameterKey>helios2_b_rtn(0)</ParameterKey>
               <ValidMin/>
               <ValidMax/>
               <FillValue/>
            </Element>
            <Element>
               <Name>t</Name>
               <Index>2</Index>
               <ParameterKey>helios2_b_rtn(1)</ParameterKey>
               <ValidMin/>
               <ValidMax/>
               <FillValue/>
            </Element>
            <Element>
               <Name>n</Name>
               <Index>3</Index>
               <ParameterKey>helios2_b_rtn(2)</ParameterKey>
               <ValidMin/>
               <ValidMax/>
               <FillValue/>
            </Element>
         </Structure>

      </Parameter>      
      <Parameter>
         <Name>|b|</Name>
         <ParameterKey>helios2_b_mag</ParameterKey>
         <Description/>
         <Ucd/>
         <Units>nT</Units>
         <UnitsConversion/>
      </Parameter>    

   </NumericalData>
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