<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1N00.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/mission/mgn/v1/PDS4_MGN_1N00_1100.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/cart/v1/PDS4_CART_1N00_1970.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
 
<Product_Observational xmlns="http://pds.nasa.gov/pds4/pds/v1"
  xmlns:mgn="http://pds.nasa.gov/pds4/mission/mgn/v1"
  xmlns:cart="http://pds.nasa.gov/pds4/cart/v1"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://pds.nasa.gov/pds4/pds/v1 https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1N00.xsd
     http://pds.nasa.gov/pds4/mission/mgn/v1 https://pds.nasa.gov/pds4/mission/mgn/v1/PDS4_MGN_1N00_1100.xsd
     http://pds.nasa.gov/pds4/cart/v1 https://pds.nasa.gov/pds4/cart/v1/PDS4_CART_1N00_1970.xsd">
 
  <Identification_Area>
    <logical_identifier>urn:nasa:pds:magellan_gvdr:data_gvdr:gvhdr_sinu</logical_identifier>
    <version_id>1.0</version_id>
    <title>Magellan GVDR Sinusoidal Summary Information Table: GVHDR</title>
    <information_model_version>1.23.0.0</information_model_version>
    <product_class>Product_Observational</product_class>
  </Identification_Area>
  <Observation_Area>
    <Time_Coordinates>
       <start_date_time xsi:nil="true" nilReason="unknown"></start_date_time>
       <stop_date_time xsi:nil="true" nilReason="unknown"></stop_date_time>
    </Time_Coordinates>
    <Investigation_Area>
       <name>Magellan</name>
       <type>Mission</type>
       <Internal_Reference>
          <lid_reference>urn:nasa:pds:context:investigation:mission.magellan</lid_reference>
          <reference_type>data_to_investigation</reference_type>
       </Internal_Reference>
    </Investigation_Area>
    <Observing_System>
      <Observing_System_Component>
        <name>The Magellan Spacecraft</name>
        <type>Host</type>
        <Internal_Reference>
          <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.mgn</lid_reference>
          <reference_type>is_instrument_host</reference_type>
        </Internal_Reference>
      </Observing_System_Component>
      <Observing_System_Component>
        <name>Magellan Spacecraft Radar System</name>
        <type>Instrument</type>
        <Internal_Reference>
          <lid_reference>urn:nasa:pds:context:instrument:mgn.rdrs</lid_reference>
          <reference_type>is_instrument</reference_type>
        </Internal_Reference>
      </Observing_System_Component>
    </Observing_System>
    <Target_Identification>
      <name>Venus</name>
      <type>Planet</type>
      <Internal_Reference>
        <lid_reference>urn:nasa:pds:context:target:planet.venus</lid_reference>
        <reference_type>data_to_target</reference_type>
      </Internal_Reference>
    </Target_Identification>
  
    <Mission_Area>
      <mgn:Magellan_Parameters>
        <mgn:product_type>GVDR</mgn:product_type>       
        <mgn:start_orbit_number>376</mgn:start_orbit_number>
        <mgn:stop_orbit_number>5747</mgn:stop_orbit_number>
        <mgn:producer_institution_name>Stanford Center for Radar Astronomy</mgn:producer_institution_name>
        <mgn:original_pds_volume_id>gvdr_0001</mgn:original_pds_volume_id>
      </mgn:Magellan_Parameters>
    </Mission_Area>
  
    <Discipline_Area>
      <cart:Cartography>
        <Local_Internal_Reference>
          <local_identifier_reference>Table</local_identifier_reference>
          <local_reference_type>cartography_parameters_to_image_object</local_reference_type>
        </Local_Internal_Reference>
        <cart:Spatial_Domain>
          <cart:Bounding_Coordinates>
            <cart:west_bounding_coordinate unit="deg">0.00</cart:west_bounding_coordinate>
            <cart:east_bounding_coordinate unit="deg">360.00</cart:east_bounding_coordinate>
            <cart:north_bounding_coordinate unit="deg">90.00</cart:north_bounding_coordinate>
            <cart:south_bounding_coordinate unit="deg">-90.00</cart:south_bounding_coordinate>
          </cart:Bounding_Coordinates>
        </cart:Spatial_Domain>
        <cart:Spatial_Reference_Information>
          <cart:Horizontal_Coordinate_System_Definition>
            <cart:Planar>
              <cart:Map_Projection>
                <cart:map_projection_name>Sinusoidal</cart:map_projection_name>
                <cart:Sinusoidal>
                  <cart:longitude_of_central_meridian unit="deg">0</cart:longitude_of_central_meridian>
                </cart:Sinusoidal>
              </cart:Map_Projection>
              <cart:Planar_Coordinate_Information>
                <cart:planar_coordinate_encoding_method>Coordinate Pair</cart:planar_coordinate_encoding_method>
                <cart:Coordinate_Representation>
                  <cart:pixel_resolution_x unit="km/pixel">18.225</cart:pixel_resolution_x>
                  <cart:pixel_resolution_y unit="km/pixel">18.225</cart:pixel_resolution_y>
                  <cart:pixel_scale_x unit="pixel/deg">5.79478</cart:pixel_scale_x>
                  <cart:pixel_scale_y unit="pixel/deg">5.79478</cart:pixel_scale_y>
                </cart:Coordinate_Representation>
              </cart:Planar_Coordinate_Information>
              <cart:Geo_Transformation>
                <cart:upperleft_corner_x unit="km">-9.1125</cart:upperleft_corner_x>
                <cart:upperleft_corner_y unit="km">9504.3375</cart:upperleft_corner_y>
              </cart:Geo_Transformation>
            </cart:Planar>
            <cart:Geodetic_Model>
              <cart:latitude_type>Planetocentric</cart:latitude_type>
              <cart:a_axis_radius unit="km">6051.0</cart:a_axis_radius>
              <cart:b_axis_radius unit="km">6051.0</cart:b_axis_radius>
              <cart:c_axis_radius unit="km">6051.0</cart:c_axis_radius>
              <cart:longitude_direction>Positive East</cart:longitude_direction>
            </cart:Geodetic_Model>
          </cart:Horizontal_Coordinate_System_Definition>
        </cart:Spatial_Reference_Information>
      </cart:Cartography>
    </Discipline_Area>
  </Observation_Area>
  
  <Reference_List>
    <Internal_Reference>
      <lid_reference>urn:nasa:pds:magellan_gvdr:document:gvdrsis</lid_reference>
      <reference_type>data_to_document</reference_type>
    </Internal_Reference>
    <Source_Product_Internal>
      <lidvid_reference>urn:nasa:pds:magellan_arcdr::1.0</lidvid_reference>
      <reference_type>data_to_derived_source_product</reference_type>
    </Source_Product_Internal>
    <Source_Product_External>
      <external_source_product_identifier>MGN-V-RDRS-5-SCVDR-V1.0</external_source_product_identifier>
      <reference_type>data_to_derived_source_product</reference_type>
      <doi>10.17189/1522514</doi>
      <curating_facility>GEO</curating_facility>
    </Source_Product_External>
  </Reference_List>
  
  <File_Area_Observational>
    <File>
      <file_name>gvhdr.tab</file_name>
      <creation_date_time>1994-05-10T23:11:50.000</creation_date_time>
    </File>
    <Table_Character>
      <local_identifier>Table</local_identifier>
      <offset unit="byte">0</offset>
      <records>1</records>
      <description>
        The GVHDR file contains a table with a single row of entries. Most of the information in this table is available 
        from other PDS label files and is therefore redundant. It is collected here for the convenience of the GVDR 
        processing software provided in the SOFTWARE directory.
      </description>
      <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
      <Record_Character>
        <fields>55</fields>
        <groups>0</groups>
        <record_length unit="byte">362</record_length>
        <Field_Character>
          <name>Hardware Version ID 1</name>
          <field_number>1</field_number>
          <field_location unit="byte">1</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            One of three integer code numbers that identify the hardware platform and operating system used to create 
            the data product. This code number is the most significant of the three.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Hardware Version ID 2</name>
          <field_number>2</field_number>
          <field_location unit="byte">4</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            One of three integer code numbers that identify the hardware platform and operating system used to create 
            the data product.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Hardware Version ID 3</name>
          <field_number>3</field_number>
          <field_location unit="byte">7</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            One of three integer code numbers that identify the hardware platform and operating system used to create 
            the data product. This code number is the least significant of the three.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Software Version ID 1</name>
          <field_number>4</field_number>
          <field_location unit="byte">10</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            The major version level of the software used to create the data product.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Software Version ID 2</name>
          <field_number>5</field_number>
          <field_location unit="byte">13</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            The minor version level of the software used to create the data product.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Float Format</name>
          <field_number>6</field_number>
          <field_location unit="byte">16</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            An integer code number specifying the floating point format used in the data product. It is always 0 
            indicating IEEE-754 floating point formats.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Byte Format</name>
          <field_number>7</field_number>
          <field_location unit="byte">19</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            An integer code number specifying the byte order used in all multi-byte objects in the data product. It is 
            always 0 indicating big-endian byte order (most significant byte first).
          </description>
        </Field_Character>
        <Field_Character>
          <name>XIF Samples Maximum</name>
          <field_number>8</field_number>
          <field_location unit="byte">22</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The maximum number of XIF samples in any single pixel. This is the largest value of the column 'XIF Samples' 
            in GVPIDX.TAB.
          </description>
        </Field_Character>
        <Field_Character>
          <name>RDF Samples Maximum</name>
          <field_number>9</field_number>
          <field_location unit="byte">26</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The maximum number of EDF samples in any single pixel. This is the largest value of the column 'RDF Samples' 
            in GVPIDX.TAB.
          </description>
        </Field_Character>
        <Field_Character>
          <name>ADF Samples Maximum</name>
          <field_number>10</field_number>
          <field_location unit="byte">30</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The maximum number of ADF samples in any single pixel. This is the largest value of the column 'ADF Samples' 
            in GVPIDX.TAB.
          </description>
        </Field_Character>
        <Field_Character>
          <name>ANF Samples Maximum</name>
          <field_number>11</field_number>
          <field_location unit="byte">34</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The maximum number of ANF samples in any single pixel. This is the largest value of the column 'ANF Samples' 
            in GVPIDX.TAB.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Scattering Angle Maximum</name>
          <field_number>12</field_number>
          <field_location unit="byte">38</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The maximum value of 'Scattering Angle Count' in any row of the GVANF file. Since all rows in a table are 
            the same size, any row with a value less than this maximum has had its scattering law estimate padded with 
            zeroes.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Scattering Fit Maximum</name>
          <field_number>13</field_number>
          <field_location unit="byte">42</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The maximum value of 'Scattering Fit Count' in any row of the GVANF file. Since all rows in a table are the 
            same size, any row with a value less than this maximum has had its scattering law fits padded with zeroes.
            Normally, every row will have the full number of fits.
          </description>
        </Field_Character>
        <Field_Character>
          <name>XIF Tile Samples Maximum</name>
          <field_number>14</field_number>
          <field_location unit="byte">46</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The maximum value of 'XIF Tile Samples' in any row of the GVTIDX file. This is the number of XIF samples in 
            the tile that contains the most such samples.
          </description>
        </Field_Character>
        <Field_Character>
          <name>RDF Tile Samples Maximum</name>
          <field_number>15</field_number>
          <field_location unit="byte">52</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The maximum value of 'RDF Tile Samples' in any row of the GVTIDX file. This is the number of RDF samples in 
            the tile that contains the most such samples.
          </description>
        </Field_Character>
        <Field_Character>
          <name>ADF Tile Samples Maximum</name>
          <field_number>16</field_number>
          <field_location unit="byte">58</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The maximum value of 'ADF Tile Samples' in any row of the GVTIDX file. This is the number of ADF samples in 
            the tile that contains the most such samples.
          </description>
        </Field_Character>
        <Field_Character>
          <name>ANF Tile Samples Maximum</name>
          <field_number>17</field_number>
          <field_location unit="byte">64</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The maximum value of 'ANF Tile Samples' in any row of the GVTIDX file. This is the number of ANF samples in 
            the tile that contains the most such samples.
          </description>
        </Field_Character>
        <Field_Character>
          <name>ANF Record Bytes</name>
          <field_number>18</field_number>
          <field_location unit="byte">70</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The value of 'record_length' in the GVANF file.
          </description>
        </Field_Character>
        <Field_Character>
          <name>XIF Cohort Incidence Count</name>
          <field_number>19</field_number>
          <field_location unit="byte">76</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The full range of SAR incidence angles [0,90] is divided into N equal intervals of 90/N degrees. SAR 
            observations are grouped into 'cohorts' based on which interval their actual incidence angle occupies. The 
            observations in a cohort are averaged together to form a single row in the GVXIF file. (Note that the          
            observations in a cohort also share a single azimuth angle interval; thus, observations with the same 
            incidence angle might be split into two cohorts if their azimuth angles were different.)                      
            
            This column gives the number of cohorts N and, indirectly, the size of the intervals used for binning and 
            averaging of SAR data within the GVXIF file.
          </description>
        </Field_Character>
        <Field_Character>
          <name>XIF Cohort Azimuth Count</name>
          <field_number>20</field_number>
          <field_location unit="byte">80</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The full range of SAR azimuth angles [0,360] is divided into N equal intervals of 360/N degrees. SAR 
            observations are grouped into 'cohorts' based on which interval their actual azimuth angle occupies. The 
            observations in a cohort are averaged together to form a single row in the GVXIF file. (Note that the          
            observations in a cohort also share a single incidence angle interval; thus, observations with the same 
            azimuth angle might be split into two cohorts if their incidence angles were different.)                    
            
            This column gives the number of cohorts N and, indirectly, the size of the intervals used for binning and 
            averaging of SAR data within the GVXIF file.
          </description>
        </Field_Character>
        <Field_Character>
          <name>RDF Cohort Incidence Count</name>
          <field_number>21</field_number>
          <field_location unit="byte">84</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The full range of radiometry incidence angles [0,90] is divided into N equal intervals of 90/N degrees.                 
            Radiometry observations are grouped into 'cohorts' based on which interval their actual incidence angle 
            occupies. The observations in  a cohort are averaged together to form a single row in the GVRDF file. (Note 
            that the observations in a cohort also share a single  azimuth angle interval; thus, observations with the 
            same incidence angle might be split into two cohorts if their azimuth angles were different.)                                                               
            
            This column gives the number of cohorts N and, indirectly, the size of the intervals used for binning and 
            averaging of radiometry data within the GVRDF file.
          </description>
        </Field_Character>
        <Field_Character>
          <name>RDF Cohort Azimuth Count</name>
          <field_number>22</field_number>
          <field_location unit="byte">88</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The full range of radiometry azimuth angles [0,360] is divided into N equal intervals of 360/N degrees.               
            Radiometry observations are grouped into 'cohorts' based on which interval their actual azimuth angle 
            occupies. The observations in a cohort are averaged together to form a single row in the GVRDF file. (Note 
            that the observations in a cohort also share a single incidence angle interval; thus, observations with the 
            same azimuth angle might be split into two cohorts if their incidence angles were different.)                                                               
            
            This column gives the number of cohorts N and, indirectly, the size of the intervals used for binning and 
            averaging of radiometry data within the GVRDF file.
          </description>
        </Field_Character>
        <Field_Character>
          <name>ANF Cohort Azimuth Count</name>
          <field_number>23</field_number>
          <field_location unit="byte">92</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The full range of altimetry azimuth angles [0,360] is divided into N equal intervals of 360/N degrees.               
            Altimetry observations are grouped into 'cohorts' based on which interval their actual azimuth angle 
            occupies. The observations in a cohort are averaged together to form a single row in the GVANF file.      
            
            This column gives the number of cohorts N and, indirectly, the size of the intervals used for binning and 
            averaging of altimetry data within the GVANF file.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Horizontal Tile Count</name>
          <field_number>24</field_number>
          <field_location unit="byte">96</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The number of tiles in the horizontal direction into which the GVDR image is divided.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Vertical Tile Count</name>
          <field_number>25</field_number>
          <field_location unit="byte">100</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">3</field_length>
          <description>
            The number of tiles in the vertical direction into which the GVDR image is divided.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Horizontal Tile Size</name>
          <field_number>26</field_number>
          <field_location unit="byte">104</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">4</field_length>
          <description>
            The number of pixels in the horizontal direction in each tile.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Vertical Tile Size</name>
          <field_number>27</field_number>
          <field_location unit="byte">109</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">4</field_length>
          <description>
            The number of pixels in the vertical direction in each tile.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Map Projection ID 1</name>
          <field_number>28</field_number>
          <field_location unit="byte">114</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            An integer code number given to each map projection. 
            Possible values are:                                         
            8      Mercator                                                      
            9      Polar Stereographic                                           
            16      Sinusoidal
          </description>
        </Field_Character>
        <Field_Character>
          <name>Map Projection ID 2</name>
          <field_number>29</field_number>
          <field_location unit="byte">117</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">2</field_length>
          <description>
            An integer code number given to the region of the planet covered by the map projection.  
            Possible values are:           
            0       Global (used with Sinusoidal)                                 
            1       Equatorial (used with Mercator)                               
            2       North (used with North Polar Stereographic)                   
            3       South (used with South Polar Stereographic)
          </description>
        </Field_Character>
        <Field_Character>
          <name>Leftmost Map Coord</name>
          <field_number>30</field_number>
          <field_location unit="byte">120</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The minimum x-coordinate of any pixel in this data product. The bounding box that encloses all pixels has 
            its left edge at this value. This value is also the left side of all the leftmost tiles. The relationship 
            between pixel coordinates and geographic location is given by the map projection defined in the 
            cart:Cartography class.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Rightmost Map Coord</name>
          <field_number>31</field_number>
          <field_location unit="byte">126</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The maximum x-coordinate of any pixel in this data product. The bounding box that encloses all pixels has 
            its right edge at this value. Since all tiles are the same width and start at the leftmost edge of the GVDR 
            image, this value may be less than the right side of the rightmost tiles. The relationship between pixel 
            coordinates and geographic location is given by the map projection defined in the cart:Cartography class.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Bottommost Map Coord</name>
          <field_number>32</field_number>
          <field_location unit="byte">132</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The minimum y-coordinate of any pixel in this data product. The bounding box that encloses all pixels has 
            its bottom edge at this value. Since all tiles are the same height and start at the topmost edge of the GVDR 
            image, this value may be less than the bottom side of the bottommost tiles. The relationship between pixel 
            coordinates and geographic location is given by the map projection defined in the cart:Cartography class.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Topmost Map Coord</name>
          <field_number>33</field_number>
          <field_location unit="byte">138</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The maximum y-coordinate of any pixel in this data product. The bounding box that encloses all pixels has 
            its top edge at this value. This value is also the top side of all the topmost tiles. The relationship 
            between pixel coordinates and geographic location is given by the map projection defined in the 
            cart:Cartography class.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Projection Lines</name>
          <field_number>34</field_number>
          <field_location unit="byte">144</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The number of lines in the GVDR image, equal to 'Topmost Map Coord' - 'Bottommost Map Coord' + 1.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Projection Samples</name>
          <field_number>35</field_number>
          <field_location unit="byte">150</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The number of samples in the GVDR image, equal to 'Rightmost Map Coord' - 'Leftmost Map Coord' + 1.
          </description>
        </Field_Character>
        <Field_Character>
          <name>A-Axis_Radius</name>
          <field_number>36</field_number>
          <field_location unit="byte">156</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">12</field_length>
          <description>
            The value of A_AXIS_RADIUS in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>B-Axis Radius</name>
          <field_number>37</field_number>
          <field_location unit="byte">169</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">12</field_length>
          <description>
            The value of B_AXIS_RADIUS in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>C Axis Radius</name>
          <field_number>38</field_number>
          <field_location unit="byte">182</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">12</field_length>
          <description>
            The value of C_AXIS_RADIUS in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>First Standard Parallel</name>
          <field_number>39</field_number>
          <field_location unit="byte">195</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of FIRST_STANDARD_PARALLEL in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the 
            CATALOG directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Second Standard Parallel</name>
          <field_number>40</field_number>
          <field_location unit="byte">206</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of SECOND_STANDARD_PARALLEL in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the 
            CATALOG directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Center Latitude</name>
          <field_number>41</field_number>
          <field_location unit="byte">217</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of CENTER_LATITUDE in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Center Longitude</name>
          <field_number>42</field_number>
          <field_location unit="byte">228</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of CENTER_LONGITUDE in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Line First Pixel</name>
          <field_number>43</field_number>
          <field_location unit="byte">239</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The value of LINE_FIRST_PIXEL in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Line Last Pixel</name>
          <field_number>44</field_number>
          <field_location unit="byte">245</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The value of LINE_LAST_PIXEL in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Sample First Pixel</name>
          <field_number>45</field_number>
          <field_location unit="byte">251</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The value of SAMPLE_FIRST_PIXEL in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Sample Last Pixel</name>
          <field_number>46</field_number>
          <field_location unit="byte">257</field_location>
          <data_type>ASCII_Integer</data_type>
          <field_length unit="byte">5</field_length>
          <description>
            The value of SAMPLE_LAST_PIXEL in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Map Projection Rotation</name>
          <field_number>47</field_number>
          <field_location unit="byte">263</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of MAP_PROJECTION_ROTATION in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the 
            CATALOG directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Map Resolution</name>
          <field_number>48</field_number>
          <field_location unit="byte">274</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of MAP_RESOLUTION in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Map Scale</name>
          <field_number>49</field_number>
          <field_location unit="byte">285</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of MAP_SCALE in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Minimum Latitude</name>
          <field_number>50</field_number>
          <field_location unit="byte">296</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of MINIMUM_LATITUDE in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Maximum Latitude</name>
          <field_number>51</field_number>
          <field_location unit="byte">307</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of MAXIMUM_LATITUDE in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Westernmost Longitude</name>
          <field_number>52</field_number>
          <field_location unit="byte">318</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of WESTERNMOST_LONGITUDE in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Easternmost Longitude</name>
          <field_number>53</field_number>
          <field_location unit="byte">329</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of EASTERNMOST_LONGITUDE in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Line Projection Offset</name>
          <field_number>54</field_number>
          <field_location unit="byte">340</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of LINE_PROJECTION_OFFSET in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the CATALOG 
            directory.
          </description>
        </Field_Character>
        <Field_Character>
          <name>Sample Projection Offset</name>
          <field_number>55</field_number>
          <field_location unit="byte">351</field_location>
          <data_type>ASCII_Real</data_type>
          <field_length unit="byte">10</field_length>
          <description>
            The value of SAMPLE_PROJECTION_OFFSET in the IMAGE_MAP_PROJECTION object defined in IMPNORTH.LBL in the 
            CATALOG directory.
          </description>
        </Field_Character>
      </Record_Character> 
    </Table_Character>
  </File_Area_Observational>
  <File_Area_Observational_Supplemental>
    <File>
      <file_name>gvhdr.lbl</file_name>
    </File>
    <Stream_Text>
      <offset unit="byte">0</offset>
      <parsing_standard_id>PDS3</parsing_standard_id>
      <description>Original PDS3 label</description>
      <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
    </Stream_Text>
  </File_Area_Observational_Supplemental>
  <File_Area_Observational_Supplemental>
    <File>
      <file_name>gvhdr.fmt</file_name>
    </File>
    <Stream_Text>
      <offset unit="byte">0</offset>
      <parsing_standard_id>PDS3</parsing_standard_id>
      <description>Original PDS3 format file</description>
      <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
    </Stream_Text>
  </File_Area_Observational_Supplemental>
</Product_Observational>
