<?xml version="1.0" encoding="UTF-8" standalone="no"?>

<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1E00.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" 
  xsi:schemaLocation="http://pds.nasa.gov/pds4/pds/v1 https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1E00.xsd">
  <Identification_Area>
    <logical_identifier>urn:nasa:pds:lp_rs_jpl_gravity_derived:data_ascii:jou075d1_ascii</logical_identifier>
    <version_id>1.0</version_id>
    <title>Lunar Prospector Gravity File: jou075d1_ascii</title>
    <information_model_version>1.14.0.0</information_model_version>
    <product_class>Product_Observational</product_class>
    <Modification_History>
      <Modification_Detail>
        <modification_date>2021-01-14</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 xsi:nil="true" nilReason="missing"></start_date_time>
      <stop_date_time xsi:nil="true" nilReason="missing"></stop_date_time>
    </Time_Coordinates>
    <Investigation_Area>
      <name>Lunar Prospector</name>
      <type>Mission</type>
      <Internal_Reference>
        <lid_reference>urn:nasa:pds:context:investigation:mission.lunar_prospector</lid_reference>
        <reference_type>data_to_investigation</reference_type>
      </Internal_Reference>
    </Investigation_Area>
    <Observing_System>
      <Observing_System_Component>
        <name>Lunar Prospector</name>
        <type>Host</type>
        <Internal_Reference>
          <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.lp</lid_reference>
          <reference_type>is_instrument_host</reference_type>
        </Internal_Reference>
      </Observing_System_Component>
      <Observing_System_Component>
        <name>Radio Science Subsystem</name>
        <type>Instrument</type>
        <Internal_Reference>
          <lid_reference>urn:nasa:pds:context:instrument:lp.rss</lid_reference>
          <reference_type>is_instrument</reference_type>
        </Internal_Reference>
      </Observing_System_Component>
    </Observing_System>   
    <Target_Identification>
      <name>Moon</name>
      <type>Satellite</type>
      <Internal_Reference>
        <lid_reference>urn:nasa:pds:context:target:satellite.earth.moon</lid_reference>
        <reference_type>data_to_target</reference_type>
      </Internal_Reference>
    </Target_Identification>
  </Observation_Area>
  <Reference_List>
    <Internal_Reference>
      <lid_reference>urn:nasa:pds:lp_rs_jpl_gravity_derived:data_image:jou075d1_img</lid_reference>
      <reference_type>data_to_associate</reference_type>
    </Internal_Reference>
  </Reference_List>

  <File_Area_Observational>
    <File>
      <file_name>jou075d1.dat</file_name>
      <comment>
        This file contains a digital,
        1 X 1 degree resolution grid of the errors in the geoid
        anomalies of the moon. It is a 360 x 180 grid from 89.5 to -89.5
        degrees latitude, and -180.0 to 179.0 degrees longitude. The errors
        were computed by projecting the full covariance of the JGL075D gravity
        solution onto the surface of the satellite. The observation is lunar
        geoid uncertainty in meters at the surface referenced to a sphere of
        1738.0 km radius.
        
        This is a 2-D grid of the errors in the
        Geoid anomalies of the Moon in meters. The file contains 180 blocks of
        36 records, with each record containing 10 geoid anomaly error values
        plus an ASCII carriage-return line-feed pair as a delimiter. The first
        block contains values at 89.5N latitude; the first value in the first
        record is the error in the geoid anomaly at (89.5N, 180.0W).
      </comment>
    </File>
    
    <Stream_Text>
      <offset unit="byte">0</offset>
      <parsing_standard_id>7-Bit ASCII Text</parsing_standard_id>
      <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
    </Stream_Text>
  </File_Area_Observational>

  <File_Area_Observational_Supplemental>
    <File>
      <file_name>jou075d1.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>
</Product_Observational>
