<?xml version="1.0" encoding="UTF-8" standalone="no"?>

<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1A10.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/mission/mess/v1/PDS4_MESS_1B00_1020.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/cart/v1/PDS4_CART_1900.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/disp/v1/PDS4_DISP_1700.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>

<Product_Observational xmlns="http://pds.nasa.gov/pds4/pds/v1" 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xmlns:mess="http://pds.nasa.gov/pds4/mission/mess/v1"
  xmlns:disp="http://pds.nasa.gov/pds4/disp/v1"
  xmlns:cart="http://pds.nasa.gov/pds4/cart/v1"
  xsi:schemaLocation="
  http://pds.nasa.gov/pds4/pds/v1 https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1A10.xsd
  http://pds.nasa.gov/pds4/disp/v1 https://pds.nasa.gov/pds4/disp/v1/PDS4_DISP_1700.xsd
  http://pds.nasa.gov/pds4/cart/v1 https://pds.nasa.gov/pds4/cart/v1/PDS4_CART_1900.xsd
  http://pds.nasa.gov/pds4/mission/mess/v1 https://pds.nasa.gov/pds4/mission/mess/v1/PDS4_MESS_1B00_1020.xsd">
  <Identification_Area>
    <logical_identifier>urn:nasa:pds:mess_grs_derived:data_maps:grs_dap_o_gcr_err</logical_identifier>
    <version_id>1.0</version_id>
    <title>MESSENGER GRS map:grs_dap_o_gcr_err</title>
    <information_model_version>1.10.1.0</information_model_version>
    <product_class>Product_Observational</product_class>
    <Modification_History>
      <Modification_Detail>
        <modification_date>2018-06-26</modification_date>
        <version_id>1.0</version_id>
        <description>PDS4 migrated product.</description>
      </Modification_Detail>
    </Modification_History>
  </Identification_Area>
  <Observation_Area>
    <Time_Coordinates>
      <start_date_time>2011-03-24T00:00:00Z</start_date_time>
      <stop_date_time>2011-10-11T23:59:59Z</stop_date_time>
    </Time_Coordinates>
    <Investigation_Area>
      <name>MESSENGER</name>
      <type>Mission</type>
      <Internal_Reference>
        <lid_reference>urn:nasa:pds:context:investigation:mission.messenger</lid_reference>
        <reference_type>data_to_investigation</reference_type>
      </Internal_Reference>
    </Investigation_Area>
    <Observing_System>
      <Observing_System_Component>
        <name>MESSENGER</name>
        <type>Spacecraft</type>
        <Internal_Reference>
          <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.mess</lid_reference>
          <reference_type>is_instrument_host</reference_type>
        </Internal_Reference>
      </Observing_System_Component>
      <Observing_System_Component>
        <name>Gamma Ray Spectrometer</name>
        <type>Instrument</type>
        <Internal_Reference>
          <lid_reference>urn:nasa:pds:context:instrument:grs.mess</lid_reference>
          <reference_type>is_instrument</reference_type>
        </Internal_Reference>
      </Observing_System_Component>
    </Observing_System>
    <Target_Identification>
      <name>Mercury</name>
      <type>Planet</type>
      <Internal_Reference>
        <lid_reference>urn:nasa:pds:context:target:planet.mercury</lid_reference>
        <reference_type>data_to_target</reference_type>
      </Internal_Reference>
    </Target_Identification>
    <Mission_Area>
      <mess:MESSENGER>
        <mess:mission_phase_name>Mercury Orbit</mess:mission_phase_name>
        <mess:spacecraft_clock_start_count>1/209412268</mess:spacecraft_clock_start_count>
        <mess:spacecraft_clock_stop_count>1/226865065</mess:spacecraft_clock_stop_count>
        <mess:standard_data_product_id>grs_dap</mess:standard_data_product_id><!--it doesn't have in pds3 label but comparing to other grs_cdr data, it shall be added as grs_dap  -->
      </mess:MESSENGER>
    </Mission_Area>
    <Discipline_Area>
      <disp:Display_Settings>
        <Local_Internal_Reference>
          <local_identifier_reference>ogcrerrmap</local_identifier_reference>
          <local_reference_type>display_settings_to_array</local_reference_type>
        </Local_Internal_Reference>
        <disp:Display_Direction>
          <disp:horizontal_display_axis>Sample</disp:horizontal_display_axis>
          <disp:horizontal_display_direction>Left to Right</disp:horizontal_display_direction>
          <disp:vertical_display_axis>Line</disp:vertical_display_axis>
          <disp:vertical_display_direction>Top to Bottom</disp:vertical_display_direction>
        </disp:Display_Direction>
      </disp:Display_Settings>     
      
      <cart:Cartography>
        <Local_Internal_Reference>
          <local_identifier_reference>ogcrerrmap</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">-180.0</cart:west_bounding_coordinate>
            <cart:east_bounding_coordinate unit="deg">180.0</cart:east_bounding_coordinate>
            <cart:north_bounding_coordinate unit="deg">90.0</cart:north_bounding_coordinate>
            <cart:south_bounding_coordinate unit="deg">-90.0</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>Equirectangular</cart:map_projection_name>
                <cart:Equirectangular>
                  <cart:standard_parallel_1 unit="deg">0</cart:standard_parallel_1>
                  <cart:longitude_of_central_meridian unit="deg">0.0</cart:longitude_of_central_meridian>
                  <cart:latitude_of_projection_origin unit="deg">0.0</cart:latitude_of_projection_origin>
                </cart:Equirectangular>
              </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="m/pixel">21293.0165</cart:pixel_resolution_x>
                  <cart:pixel_resolution_y unit="m/pixel">21293.0165</cart:pixel_resolution_y>
                  <cart:pixel_scale_x unit="pixel/deg">2.0</cart:pixel_scale_x>
                  <cart:pixel_scale_y unit="pixel/deg">2.0</cart:pixel_scale_y>
                </cart:Coordinate_Representation>
              </cart:Planar_Coordinate_Information>
              <cart:Geo_Transformation>
                <cart:upperleft_corner_x unit="m">-7654839.4318</cart:upperleft_corner_x>
                <cart:upperleft_corner_y unit="m">3822096.4618</cart:upperleft_corner_y>
              </cart:Geo_Transformation>
            </cart:Planar>
            <cart:Geodetic_Model>
              <cart:latitude_type>planetocentric</cart:latitude_type>
              <cart:spheroid_name>mercury</cart:spheroid_name>
              <cart:semi_major_radius unit="km">2440.0</cart:semi_major_radius>
              <cart:semi_minor_radius unit="km">2440.0</cart:semi_minor_radius>
              <cart:polar_radius unit="km">2440.0</cart:polar_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>
  <File_Area_Observational>
    <File>
      <file_name>grs_dap_o_gcr_err.img</file_name>
      <creation_date_time>2018-04-17T20:56:06Z</creation_date_time>
      <file_size unit="byte">259200</file_size>
      <comment>Pixel map of the one-standard-deviation error values for the 6129-keV oxygen
        gamma-ray count rates. Includes contributions from the 6129-keV peak and its
        single and double escape peaks. The image is linearly scaled in an identical
        manner as the corresponding count rate map, such that the maximum pixel 
        value (255) corresponds to a maximum value of 2.342 counts per minute. The 
        actual error values are much smaller than the maximum value. Conversion from 
        Digital Number (DN) to science value is given by the equation:
        SCIENCE_VALUE = (DN * 0.00919)
      </comment>
    </File>
    <Array_2D_Map>
      <name>GRS Oxygen Gamma-Ray Count Rate Error Map</name>
      <local_identifier>ogcrerrmap</local_identifier>
      <offset unit="byte">0</offset>
      <axes>2</axes>
      <axis_index_order>Last Index Fastest</axis_index_order>
      <Element_Array>
        <data_type>UnsignedByte</data_type>
        <unit>counts/minute</unit>
        <scaling_factor>0.00919</scaling_factor>
      </Element_Array>
      <Axis_Array>
        <axis_name>Line</axis_name>
        <elements>360</elements>
        <sequence_number>1</sequence_number>
      </Axis_Array>
      <Axis_Array>
        <axis_name>Sample</axis_name>
        <elements>720</elements>
        <sequence_number>2</sequence_number>
      </Axis_Array>
      <Special_Constants>
        <missing_constant>0</missing_constant>
      </Special_Constants>
      <Object_Statistics>
        <maximum_scaled_value>2.342</maximum_scaled_value>
        <minimum_scaled_value>0</minimum_scaled_value>
      </Object_Statistics>
     </Array_2D_Map>
  </File_Area_Observational>
  <File_Area_Observational_Supplemental>
    <File>
      <file_name>grs_dap_o_gcr_err.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>grs_dap_o_gcr_err.jp2</file_name>
      <creation_date_time>2013-12-19T16:23:56.000Z</creation_date_time>
    </File>
    <Encoded_Image>
      <offset unit="byte">0</offset>
      <encoding_standard_id>J2C</encoding_standard_id>
      <description>Original JPEG-2000 image in PDS3 archive</description>
    </Encoded_Image>
  </File_Area_Observational_Supplemental>
</Product_Observational>
