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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_1C00.xsd">
 <Identification_Area>
  <logical_identifier>urn:nasa:pds:a15_17_hfe_concatenated:data:a17_1977p2f1_clean</logical_identifier>
  <version_id>1.0</version_id>
  <title>Apollo 17 1977 probe 2 file 1 'clean'</title>
  <information_model_version>1.12.0.0</information_model_version>
  <product_class>Product_Observational</product_class>
  <Citation_Information>
   <author_list>St. Clair, M; Million, C.; Siegler, M.</author_list>
   <editor_list>Ward, J.</editor_list>
   <publication_year>2019</publication_year>
   <description>
    This table contains data from parts of 1977 for the upper gradient bridge of
    Apollo 17 probe 2 in this bundle's 'clean' format. This format flags
    impulsive outliers and missing data using a bitmask, adds a corrected dT
    range to some Lamont-NSSDC data, reorders some inverted time points, and
    places data from Nagihara et al. into the format of the Lamont-NSSDC data.
    See bundle_documentation.md for details. It is basically a converted,
    reformatted, and marked-up version of data released by Nagihara et al. along
    with "Examination of the Long‐Term Subsurface Warming Observed at the
    Apollo 15 and 17 Sites Utilizing the Newly Restored Heat Flow Experiment
    Data From 1975 to 1977," JGR Planets 123 (5), May 2018, doi:
    10.1029/2018JE005579.
   </description>
  </Citation_Information>
  <Modification_History>
   <Modification_Detail>
    <modification_date>2020-02-13</modification_date>
    <version_id>1.0</version_id>
    <description>
     Initial version.
    </description>
   </Modification_Detail>
  </Modification_History>
 </Identification_Area>
 <Observation_Area>
  <Time_Coordinates>
   <start_date_time>1977-04-25T06:33:34.590Z</start_date_time>
   <stop_date_time>1977-09-30T18:06:22.080Z</stop_date_time>
  </Time_Coordinates>
  <Investigation_Area>
   <name>Apollo 17</name>
   <type>Mission</type>
   <Internal_Reference>
    <lid_reference>urn:nasa:pds:context:investigation:mission.apollo_17</lid_reference>
    <reference_type>data_to_investigation</reference_type>
   </Internal_Reference>
  </Investigation_Area>
  <Observing_System>
   <Observing_System_Component>
    <name>APOLLO 17 LUNAR SURFACE EXPERIMENTS PACKAGE</name>
    <type>Spacecraft</type>
    <Internal_Reference>
     <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.a17a</lid_reference>
     <reference_type>is_instrument_host</reference_type>
    </Internal_Reference>
   </Observing_System_Component>
   <Observing_System_Component>
    <name>HEAT FLOW EXPERIMENT</name>
    <type>Instrument</type>
    <Internal_Reference>
     <lid_reference>urn:nasa:pds:context:instrument:hfe.a17a</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>
  <Source_Product_External>
   <external_source_product_identifier>10.1029/2018JE005579</external_source_product_identifier>
   <reference_type>data_to_derived_source_product</reference_type>
   <doi>10.1029/2018JE005579</doi>
   <description>
    Data released with publication: Nagihara et al., Examination of the
    Long‐Term Subsurface Warming Observed at the Apollo 15 and 17 Sites
    Utilizing the Newly Restored Heat Flow Experiment Data From 1975 to 1977,
    JGR Planets 123 (5), May 2018. Contains data recovered from ARCSAV tapes.
   </description>
  </Source_Product_External>
 </Reference_List>
 <File_Area_Observational>
  <File>
   <file_name>a17_1977p2f1.tab</file_name>
   <file_size unit="byte">1850883</file_size>
   <records>28920</records>
  </File>
  <Header>
   <name>Header</name>
   <offset unit="byte">0</offset>
   <object_length unit="byte">68</object_length>
   <parsing_standard_id>UTF-8 Text</parsing_standard_id>
  </Header>
  <Table_Character>
   <name>a17_1977p2f1</name>
   <offset unit="byte">68</offset>
   <records>28919</records>
   <description>
    This table contains data from parts of 1977 for the upper gradient bridge of
    Apollo 17 probe 2 in this bundle's 'clean' format. This format flags
    impulsive outliers and missing data using a bitmask, adds a corrected dT
    range to some Lamont-NSSDC data, reorders some inverted time points, and
    places data from Nagihara et al. into the format of the Lamont-NSSDC data.
    See bundle_documentation.md for details. It is basically a converted,
    reformatted, and marked-up version of data released by Nagihara et al. along
    with "Examination of the Long‐Term Subsurface Warming Observed at the
    Apollo 15 and 17 Sites Utilizing the Newly Restored Heat Flow Experiment
    Data From 1975 to 1977," JGR Planets 123 (5), May 2018, doi:
    10.1029/2018JE005579
   </description>
   <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
   <Record_Character>
    <fields>4</fields>
    <groups>0</groups>
    <record_length unit="byte">64</record_length>
    <Field_Character>
     <name>Time</name>
     <field_number>1</field_number>
     <field_location unit="byte">1</field_location>
     <data_type>ASCII_Real</data_type>
     <field_length unit="byte">17</field_length>
     <unit>ms</unit>
     <description>
      Earth-received time expressed in the 'mission epoch' format used by the
      original investigators: total ms from midnight on December 31, 1971.
     </description>
    </Field_Character>
    <Field_Character>
     <name>T</name>
     <field_number>2</field_number>
     <field_location unit="byte">19</field_location>
     <data_type>ASCII_Real</data_type>
     <field_length unit="byte">14</field_length>
     <unit>K</unit>
     <description>
      Average temperature of the bridge's thermometers. Nagihara et al. give
      explicit temperatures for each thermometer. We compute T by simply
      averaging these values.
     </description>
    </Field_Character>
    <Field_Character>
     <name>dT</name>
     <field_number>3</field_number>
     <field_location unit="byte">34</field_location>
     <data_type>ASCII_Real</data_type>
     <field_length unit="byte">14</field_length>
     <unit>K</unit>
     <description>
      Temperature difference between the lower and upper thermometers of the
      bridge. Positive values mean the lower thermometer is warmer. Nagihara et
      al. give explicit temperatures for each thermometer. We compute dT by
      simply taking the difference of these values.
     </description>
    </Field_Character>
    <Field_Character>
     <name>flags</name>
     <field_number>4</field_number>
     <field_location unit="byte">49</field_location>
     <data_type>ASCII_Real</data_type>
     <field_length unit="byte">14</field_length>
     <description>
      Bitmask marking special features of some data points. See
      bundle_documentation.md for details.
     </description>
    </Field_Character>
   </Record_Character>
  </Table_Character>
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