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<Product_Observational
   xmlns="http://pds.nasa.gov/pds4/pds/v1"
   xmlns:msn="http://pds.nasa.gov/pds4/msn/v1"
   xmlns:particle="http://pds.nasa.gov/pds4/particle/v2"
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    <Identification_Area> 
        <logical_identifier>urn:nasa:pds:vg1-mag-swind:data-hg-1hr:vg1mag_1hr_1990_2004</logical_identifier> 
        <version_id>1.0</version_id>
        <title>VG1 MAG Solar Wind Inertial Heliographic (IHG) 1 Hour Averaged Data 1990-01-01 - 2004-12-31</title> 
        <information_model_version>1.24.0.0</information_model_version> 
        <product_class>Product_Observational</product_class>
        <Citation_Information>
            <publication_year>2009</publication_year> 
            <description>
                This file contains 1 hour averaged from the Voyager 1 magnetometer 
                provided in Inertial Heliographic (IHG) coordinates during the interplanetary 
                cruise. The data begin in 1977 and go through the end of 1989.

                These data was extracted from the NSSDC archive for distribution  
                by the PDS. These data were not submitted to the PDS for archive 
                and have not been through the PDS peer review process. These data 
                are provided by the PDS for the convenience of PDS users. Please 
                exercise caution when using these data.
            </description>
            <List_Author>
                <Person>
                    <given_name>Norman F.</given_name>
                    <family_name>Ness</family_name>
                    <Affiliation>
                        <organization_name>NASA Goddard Space Flight Center</organization_name>
                        <organization_rorid>https://ror.org/0171mag52</organization_rorid>
                    </Affiliation>
                </Person>
                <Person>
                    <given_name>Mario H.</given_name>
                    <family_name>Acuna</family_name>
                    <Affiliation>
                        <organization_name>NASA Goddard Space Flight Center</organization_name>
                        <organization_rorid>https://ror.org/0171mag52</organization_rorid>
                    </Affiliation>
                </Person>
                <Person>
                    <given_name>Ronald P.</given_name>
                    <family_name>Lepping</family_name>
                    <Affiliation>
                        <organization_name>NASA Goddard Space Flight Center</organization_name>
                        <organization_rorid>https://ror.org/0171mag52</organization_rorid>
                    </Affiliation>
                </Person>
                <Person>
                    <given_name>John E. P.</given_name>
                    <family_name>Connerney</family_name>
                    <person_orcid>0000-0001-7478-6462</person_orcid>
                    <Affiliation>
                        <organization_name>NASA Goddard Space Flight Center</organization_name>
                        <organization_rorid>https://ror.org/0171mag52</organization_rorid>
                    </Affiliation>
                </Person>
                <Person>
                    <given_name>Kenneth .W</given_name>
                    <family_name>Behannon</family_name>
                    <Affiliation>
                        <organization_name>NASA Goddard Space Flight Center</organization_name>
                        <organization_rorid>https://ror.org/0171mag52</organization_rorid>
                    </Affiliation>
                </Person>
                <Person>
                    <given_name>Leonard F.</given_name>
                    <family_name>Burlaga</family_name>
                    <Affiliation>
                        <organization_name>NASA Goddard Space Flight Center</organization_name>
                        <organization_rorid>https://ror.org/0171mag52</organization_rorid>
                    </Affiliation>
                </Person>
            </List_Author>
        </Citation_Information> 
        <Modification_History>
            <Modification_Detail> 
                <modification_date>2026-07-27</modification_date>
                <version_id>1.0</version_id>
                <description> 
                    This product, VG1MAG_1HR_1990_2004.TAB was originally released
                    as part of the safed PDS3 VG1-SW-MAG-4-SUMM-HGCOORDS-1HR-V1.0 data set. 
                    The metadata have been migrated to PDS4. The data themselves are unchanged.
                </description>
            </Modification_Detail>
        </Modification_History> 
    </Identification_Area>
    <Observation_Area>
        <Time_Coordinates>
            <start_date_time>1990-01-01T00:00Z</start_date_time>
            <stop_date_time>2004-12-31T01:00Z</stop_date_time>
        </Time_Coordinates>
        <Primary_Result_Summary>
            <purpose>Science</purpose>
            <processing_level>Calibrated</processing_level>
            <description>VG1 MAG Solar Wind Data</description>            
            <Science_Facets>
                <domain>Heliosphere</domain>
                <domain>Magnetosphere</domain>
                <discipline_name>Fields</discipline_name>
                <facet1>Magnetic</facet1>
                <facet2>Background</facet2>
            </Science_Facets>
        </Primary_Result_Summary> 
        <Investigation_Area>
            <name>Voyager</name>
            <type>Mission</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:investigation:mission.voyager</lid_reference>
                <reference_type>data_to_investigation</reference_type>
            </Internal_Reference>
        </Investigation_Area>
        <Observing_System>
            <Observing_System_Component>
                <name>Voyager 1</name>
                <type>Host</type> 
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.vg1</lid_reference>
                    <reference_type>is_instrument_host</reference_type>
                </Internal_Reference> 
            </Observing_System_Component> 
            <Observing_System_Component>
                <name>Triaxial Fluxgate Magnetometer (MAG)</name>
                <type>Instrument</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument:vg1.mag</lid_reference>
                    <reference_type>is_instrument</reference_type>
                </Internal_Reference>
            </Observing_System_Component>
        </Observing_System>
        <Target_Identification>
            <name>Solar Wind</name> 
            <type>Plasma Stream</type>    
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:plasma_stream.solar_wind</lid_reference>
                <reference_type>data_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
        <Target_Identification>
            <name>Jupiter</name> 
            <type>Planet</type>    
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:planet.jupiter</lid_reference>
                <reference_type>data_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
        <Target_Identification>
            <name>Saturn</name> 
            <type>Planet</type>    
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:planet.saturn</lid_reference>
                <reference_type>data_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
        <Target_Identification>
            <name>Uranus</name> 
            <type>Planet</type>    
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:planet.uranus</lid_reference>
                <reference_type>data_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
        <Target_Identification>
            <name>Neptune</name> 
            <type>Planet</type>    
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:planet.neptune</lid_reference>
                <reference_type>data_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
        <Mission_Area>
            <msn:Mission_Information> 
                <msn:mission_phase_name>Interstellar Mission</msn:mission_phase_name>
            </msn:Mission_Information>
        </Mission_Area>
    </Observation_Area> 
    <Reference_List>
        <Source_Product_External>
            <external_source_product_identifier>VG1-SW-MAG-4-SUMM-HGCOORDS-1HR-V1.0:VG1MAG_1HR_1990_2004:VG1MAG_1HR_1990_2004.TAB</external_source_product_identifier>
            <reference_type>data_to_calibrated_source_product</reference_type>
            <doi>10.17189/1519934</doi>
            <curating_facility>PDS Planetary Plasma Interactions Node</curating_facility>
            <description>
                This is the first version converted to PDS4. The DOI references the source PDS3 data set.  
            </description>
        </Source_Product_External>
    </Reference_List>
    <File_Area_Observational> 
        <File>
            <file_name>VG1MAG_1HR_1990_2004.TAB</file_name>
            <creation_date_time>2021-07-30T11:10:57</creation_date_time>
            <file_size unit="byte">3761955</file_size>
            <md5_checksum>7a40e77ed8d496e2f58d05b7eb8f2791</md5_checksum> 
        </File> 
        <Table_Character>
            <name>VG1 MAG Solar Wind Inertial Heliographic (IHG) 1 Hour Averaged Data 1990-01-01 - 2004-12-31</name>
            <offset unit="byte">0</offset>
            <records>83599</records>
            <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
            <Record_Character>
                <fields>6</fields>
                <groups>0</groups>
                <record_length unit="byte">45</record_length>
                <Field_Character>
                    <name>Spacecraft</name>
                    <field_number>1</field_number>
                    <field_location unit="byte">1</field_location>
                    <data_type>ASCII_String</data_type>
                    <field_length unit="byte">1</field_length>
                    <description>S/C identification (Voyager 1 = 1, Voyager 2 = 2)</description>
                </Field_Character>
                <Field_Character>
                    <name>UTC</name>
                    <field_number>2</field_number>
                    <field_location unit="byte">3</field_location>
                    <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">11</field_length>
                    <description>Decimal year (i.e. 90.00193787)</description>
                </Field_Character>
                <Field_Character>
                    <name>Bmag_F1</name>
                    <field_number>3</field_number>
                    <field_location unit="byte">15</field_location>
                    <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">7</field_length>
                    <unit>nT</unit>
                    <description>The magnetic field strength, F1, 
                        computed from high-resolution  observations.</description>
                    <Special_Constants>
                        <missing_constant>999.000</missing_constant>
                    </Special_Constants>
                </Field_Character>
                <Field_Character>
                    <name>delta</name>
                    <field_number>4</field_number>
                    <field_location unit="byte">23</field_location>
                    <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">6</field_length>
                    <unit>deg</unit>
                    <description>
                        The elevation angle (degrees) in heliographic coordinates.
                    </description>
                    <Special_Constants>
                        <missing_constant>999.0</missing_constant>
                    </Special_Constants>
                </Field_Character>
                <Field_Character>
                    <name>lambda</name>
                    <field_number>5</field_number>
                    <field_location unit="byte">30</field_location>
                    <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">6</field_length>
                    <unit>deg</unit>
                    <description>
                        The azimuthal angle (degrees) in heliographic coordinates.
                    </description>
                    <Special_Constants>
                        <missing_constant>999.0</missing_constant>
                    </Special_Constants>
                </Field_Character>
                <Field_Character>
                    <name>Bmag_F2</name>
                    <field_number>6</field_number>
                    <field_location unit="byte">37</field_location>
                    <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">7</field_length>
                    <unit>nT</unit>
                    <description>
                        The magnetic field strength, F2, computed from hour averages            
                        of the components. The components of B can be computed from F2          
                        and the two angles.
                    </description>
                    <Special_Constants>
                        <missing_constant>999.0</missing_constant>
                    </Special_Constants>
                </Field_Character>
            </Record_Character>
        </Table_Character>
    </File_Area_Observational>
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