<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://www.spase-group.org/data/schema/spase-2_2_2.xsd'">
    <Version>2.2.2</Version>
    <NumericalData>
        <ResourceID>spase://VMO/NumericalData/IMP8/MAG/PT15.36S</ResourceID>
        <ResourceHeader>
            <ResourceName>IMP 8 MAG 15.36s Magnetic Field Measurements</ResourceName>
            <ReleaseDate>2011-03-08T20:30:15Z</ReleaseDate>
            <Description>IMP 8 magnetic field measurements from tri-axis magnetometer. 
Time resolution is 15.36 second.  Data are based on a 2010 data reprocessing
by the PI team.  Parameter details below are based on the version of the data 
in CDAWeb.</Description>
            <Acknowledgement>User will acknowledge the IMP-8 magnetometer team,
and the data access path used, in any publication resulting from the use of 
these data.</Acknowledgement>
            <Contact>
                <PersonID>spase://SMWG/Person/Adam.Szabo</PersonID>
                <Role>PrincipalInvestigator</Role>
            </Contact>
            <InformationURL>
                <Name>IMP-8 Magnetometer Experiment Home Page</Name>
                <URL>http://wind.nasa.gov/imp8/</URL>
                <Description>A web site hosting instrument information and providing 
access to the data</Description>
            </InformationURL>
        </ResourceHeader>
        <AccessInformation>
            <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
            <Availability>Online</Availability>
            <AccessRights>Open</AccessRights>
            <AccessURL>
                <Name>FTP access to files at SPDF</Name>
                <URL>ftp://spdf.gsfc.nasa.gov/pub/data/imp/imp8/mag</URL>
                <Description>An ftp repository hosting 15s magnetic field data from IMP-8.</Description>
            </AccessURL>
            <AccessURL>
                <Name>HTTP access to files at SPDF</Name>
                <URL>http://spdf.gsfc.nasa.gov/pub/data/imp/imp8/mag</URL>
                <Description>In CDF via HTTP from SPDF</Description>
            </AccessURL>
            <Format>CDF</Format>
        </AccessInformation>
        <AccessInformation>
            <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
            <Availability>Online</Availability>
            <AccessRights>Open</AccessRights>
            <AccessURL>
                <Name>CDAWeb</Name>
                <URL>http://cdaweb.gsfc.nasa.gov/cdaweb/sp_phys/</URL>
                <ProductKey>I8_15SEC_MAG</ProductKey>
                <Description>Subset, plot and list data via CDAWeb</Description>
            </AccessURL>
            <AccessURL>
                <Name>FTPBrowser</Name>
                <URL>http://ftpbrowser.gsfc.nasa.gov/imp_mag15s.html</URL>
                <Description>Subset, plot and list data via FTPBrowser</Description>
            </AccessURL>
            <Format>Text</Format>
        </AccessInformation>
        <ProviderResourceName>IMP8 MAG15</ProviderResourceName>
        <ProviderProcessingLevel>Level 2</ProviderProcessingLevel>
        <ProviderVersion>3</ProviderVersion>
        <InstrumentID>spase://SMWG/Instrument/IMP8/MAG</InstrumentID>
        <MeasurementType>MagneticField</MeasurementType>
        <TemporalDescription>
            <TimeSpan>
                <StartDate>1973-10-30T15:00:32Z</StartDate>
                <StopDate>2000-06-10T15:09:18.720Z</StopDate>
                <Note>Instrument stopped working on 2000-06-10.</Note>
            </TimeSpan>
            <Cadence>PT15.36S</Cadence>
        </TemporalDescription>
        <ObservedRegion>Heliosphere.NearEarth</ObservedRegion>
        <ObservedRegion>Earth.Magnetosheath</ObservedRegion>
        <ObservedRegion>Earth.Magnetosphere.Magnetotail</ObservedRegion>
        <Caveats>The time resolution (cadence) is not constant. The time tag corresponds 
to the last 1.28s measurement in the 15.36s average.  Since the data is on average 
70% complete, this is quite often different from 15.36 seconds from the previous time 
tag. On average, however, it should be about 15.36 seconds.</Caveats>
        <Keyword>Magnetic field</Keyword>
        <Parameter>
            <Name>Epoch</Name>
            <ParameterKey>Epoch</ParameterKey>
            <Description>Epoch of the data point (last data in the 15.36-second average)</Description>
            <Cadence>PT15.36S</Cadence>
            <Units>Milliseconds</Units>
            <ValidMin>01-Jan-1973 00:00:00.000</ValidMin>
            <ValidMax>31-Dec-2000 00:00:00.000</ValidMax>
            <FillValue>-1.0e+31</FillValue>
            <Support>
                <SupportQuantity>Temporal</SupportQuantity>
            </Support>
        </Parameter>
        <Parameter>
            <Name>Number of Sequences</Name>
            <ParameterKey>N_Sequences</ParameterKey>
            <Description>The number of vectors used in the data average is 4 times this value.</Description>
            <Cadence>PT15.36S</Cadence>
            <ValidMin>0</ValidMin>
            <ValidMax>999</ValidMax>
            <FillValue>-2147483648</FillValue>
            <Support>
                <SupportQuantity>Other</SupportQuantity>
            </Support>
        </Parameter>
        <Parameter>
            <Name>Spacecraft Position GSE</Name>
            <ParameterKey>SC_Pos_GSE</ParameterKey>
            <Description>Spacecraft position in GSE coordinates</Description>
            <Cadence>PT15.36S</Cadence>
            <Units>Re</Units>
         <!-- Assuming the data processing used Re=6378km -->
            <UnitsConversion>6.378e6&gt;m</UnitsConversion>
            <CoordinateSystem>
                <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
                <CoordinateSystemName>GSE</CoordinateSystemName>
            </CoordinateSystem>
            <Structure>
                <Size>3</Size>
                <Element>
                    <Name>Xgse</Name>
                    <Qualifier>Component.I</Qualifier>
                    <Index>1</Index>
                </Element>
                <Element>
                    <Name>Ygse</Name>
                    <Qualifier>Component.J</Qualifier>
                    <Index>2</Index>
                </Element>
                <Element>
                    <Name>Zgse</Name>
                    <Qualifier>Component.K</Qualifier>
                    <Index>3</Index>
                </Element>
            </Structure>
            <ValidMin>-50.0</ValidMin>
            <ValidMax>50.0</ValidMax>
            <FillValue>-1.0e+31</FillValue>
            <Support>
                <SupportQuantity>Positional</SupportQuantity>
            </Support>
        </Parameter>
        <Parameter>
            <Name>Spacecraft Position GSM</Name>
            <ParameterKey>SC_Pos_GSM</ParameterKey>
            <Description>Spacecraft position in GSM coordinates</Description>
            <Cadence>PT15.36S</Cadence>
            <Units>Re</Units>
            <UnitsConversion>6.378e6&gt;m</UnitsConversion>
            <CoordinateSystem>
                <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
                <CoordinateSystemName>GSM</CoordinateSystemName>
            </CoordinateSystem>
            <Structure>
                <Size>3</Size>
                <Element>
                    <Name>Xgsm</Name>
                    <Qualifier>Component.I</Qualifier>
                    <Index>1</Index>
                </Element>
                <Element>
                    <Name>Ygsm</Name>
                    <Qualifier>Component.J</Qualifier>
                    <Index>2</Index>
                </Element>
                <Element>
                    <Name>Zgsm</Name>
                    <Qualifier>Component.K</Qualifier>
                    <Index>3</Index>
                </Element>
            </Structure>
            <ValidMin>-50.0</ValidMin>
            <ValidMax>50.0</ValidMax>
            <FillValue>-1.0e+31</FillValue>
            <Support>
                <SupportQuantity>Positional</SupportQuantity>
            </Support>
        </Parameter>
        <Parameter>
            <Name>B magnitude</Name>
            <ParameterKey>F1_Average_B_15s</ParameterKey>
            <Description>Magnitude of the magnetic field</Description>
            <Cadence>PT15.36S</Cadence>
            <Units>nT</Units>
            <UnitsConversion>1e-9&gt;T</UnitsConversion>
            <ValidMin>0.0</ValidMin>
            <ValidMax>100.0</ValidMax>
            <FillValue>-1.0e+31</FillValue>
            <Field>
                <Qualifier>Average</Qualifier>
                <Qualifier>Magnitude</Qualifier>
                <FieldQuantity>Magnetic</FieldQuantity>
            </Field>
        </Parameter>
        <Parameter>
            <Name>B vector GSE</Name>
            <ParameterKey>B_Vector_GSE</ParameterKey>
            <Description>Magnetic field vector in GSE coordinates</Description>
            <Cadence>PT15.36S</Cadence>
            <Units>nT</Units>
            <UnitsConversion>1e-9&gt;T</UnitsConversion>
            <CoordinateSystem>
                <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
                <CoordinateSystemName>GSE</CoordinateSystemName>
            </CoordinateSystem>
            <Structure>
                <Size>3</Size>
                <Element>
                    <Name>Bx GSE</Name>
                    <Qualifier>Component.I</Qualifier>
                    <Index>1</Index>
                </Element>
                <Element>
                    <Name>By GSE</Name>
                    <Qualifier>Component.J</Qualifier>
                    <Index>2</Index>
                </Element>
                <Element>
                    <Name>Bz GSE</Name>
                    <Qualifier>Component.K</Qualifier>
                    <Index>3</Index>
                </Element>
            </Structure>
            <ValidMin>-100.0</ValidMin>
            <ValidMax>100.0</ValidMax>
            <FillValue>-1.0e+31</FillValue>
            <Field>
                <Qualifier>Vector</Qualifier>
                <Qualifier>Average</Qualifier>
                <FieldQuantity>Magnetic</FieldQuantity>
            </Field>
        </Parameter>
        <Parameter>
            <Name>B vector GSM</Name>
            <ParameterKey>B_Vector_GSM</ParameterKey>
            <Description>Magnetic field vector in GSM coordinates</Description>
            <Cadence>PT15.36S</Cadence>
            <Units>nT</Units>
            <UnitsConversion>1e-9&gt;T</UnitsConversion>
            <CoordinateSystem>
                <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
                <CoordinateSystemName>GSM</CoordinateSystemName>
            </CoordinateSystem>
            <Structure>
                <Size>3</Size>
                <Element>
                    <Name>Bx GSM</Name>
                    <Qualifier>Component.I</Qualifier>
                    <Index>1</Index>
                </Element>
                <Element>
                    <Name>By GSM</Name>
                    <Qualifier>Component.J</Qualifier>
                    <Index>2</Index>
                </Element>
                <Element>
                    <Name>Bz GSM</Name>
                    <Qualifier>Component.K</Qualifier>
                    <Index>3</Index>
                </Element>
            </Structure>
            <ValidMin>-100.0</ValidMin>
            <ValidMax>100.0</ValidMax>
            <FillValue>-1.0e+31</FillValue>
            <Field>
                <Qualifier>Vector</Qualifier>
                <Qualifier>Average</Qualifier>
                <FieldQuantity>Magnetic</FieldQuantity>
            </Field>
        </Parameter>
        <Parameter>
            <Name>B Diagonal Variances</Name>
            <ParameterKey>B_jj_Variances</ParameterKey>
            <Description>Matrix containing magnetic field variances; diagonal elements Bxx, Byy, Bzz in GSE coordinates</Description>
            <Cadence>PT15.36S</Cadence>
            <Units>nT^2</Units>
            <UnitsConversion>1e-18&gt;T^2</UnitsConversion>
            <CoordinateSystem>
                <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
                <CoordinateSystemName>GSE</CoordinateSystemName>
            </CoordinateSystem>
            <Structure>
                <Size>3</Size>
                <Element>
                    <Name>Bxx GSE</Name>
                    <Index>1</Index>
                </Element>
                <Element>
                    <Name>Byy GSE</Name>
                    <Index>2</Index>
                </Element>
                <Element>
                    <Name>Bzz GSE</Name>
                    <Index>3</Index>
                </Element>
            </Structure>
            <ValidMin>0.0</ValidMin>
            <ValidMax>5000.0</ValidMax>
            <FillValue>-1.0e+31</FillValue>
            <Field>
                <Qualifier>Variance</Qualifier>
                <FieldQuantity>Magnetic</FieldQuantity>
            </Field>
        </Parameter>
        <Parameter>
            <Name>B off-diagonal variances</Name>
            <ParameterKey>B_jk_Variances</ParameterKey>
            <Description>Matrix containing magnetic field variances; off-diagonal elements Byx, Bzx, Bzy in GSE coordinates</Description>
            <Cadence>PT15.36S</Cadence>
            <Units>nT^2</Units>
            <UnitsConversion>1e-18&gt;T^2</UnitsConversion>
            <CoordinateSystem>
                <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
                <CoordinateSystemName>GSE</CoordinateSystemName>
            </CoordinateSystem>
            <Structure>
                <Size>3</Size>
                <Element>
                    <Name>Byx GSE</Name>
                    <Index>1</Index>
                </Element>
                <Element>
                    <Name>Bzx GSE</Name>
                    <Index>2</Index>
                </Element>
                <Element>
                    <Name>Bzy GSE</Name>
                    <Qualifier>Component.K</Qualifier>
                    <Index>3</Index>
                </Element>
            </Structure>
            <ValidMin>-5000.0</ValidMin>
            <ValidMax>5000.0</ValidMax>
            <FillValue>-1.0e+31</FillValue>
            <Field>
                <Qualifier>Variance</Qualifier>
                <FieldQuantity>Magnetic</FieldQuantity>
            </Field>
        </Parameter>
    </NumericalData>
</Spase>