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  <logical_identifier>urn:nasa:pds:a15_17_hfe_concatenated:data:a15p2f2_clean</logical_identifier>
  <version_id>1.0</version_id>
  <title>Apollo 15 probe 2 file 2 '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 1971-1974 for the lower gradient bridge of
    Apollo 15 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 corrected and
    marked-up version of PDS3 product
    A15A-L-HFE-3-THERMAL-CONDUCTIVITY-V1.0:A15_HFE_P2_2-201201.
   </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>
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  <Time_Coordinates>
   <start_date_time>1971-07-31T19:51:43Z</start_date_time>
   <stop_date_time>1974-12-31T21:07:16Z</stop_date_time>
  </Time_Coordinates>
  <Investigation_Area>
   <name>Apollo 15</name>
   <type>Mission</type>
   <Internal_Reference>
    <lid_reference>urn:nasa:pds:context:investigation:mission.apollo_15</lid_reference>
    <reference_type>data_to_investigation</reference_type>
   </Internal_Reference>
  </Investigation_Area>
  <Observing_System>
   <Observing_System_Component>
    <name>APOLLO 15 LUNAR SURFACE EXPERIMENTS PACKAGE</name>
    <type>Spacecraft</type>
    <Internal_Reference>
     <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.a15a</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.a15a</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>A15A-L-HFE-3-THERMAL-CONDUCTIVITY-V1.0:A15_HFE_P2_2-201201</external_source_product_identifier>
   <reference_type>data_to_derived_source_product</reference_type>
   <curating_facility>GEO</curating_facility>
  </Source_Product_External>
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  <File>
   <file_name>a15p2f2.tab</file_name>
   <file_size unit="byte">2132108</file_size>
   <records>28054</records>
  </File>
  <Header>
   <name>Header</name>
   <offset unit="byte">0</offset>
   <object_length unit="byte">81</object_length>
   <parsing_standard_id>UTF-8 Text</parsing_standard_id>
  </Header>
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   <name>a15p2f2</name>
   <offset unit="byte">81</offset>
   <records>28053</records>
   <description>
    This table contains data from 1971-1974 for the upper gradient bridge of
    Apollo 15 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 corrected and
    marked-up version of PDS3 product
    A15A-L-HFE-3-THERMAL-CONDUCTIVITY-V1.0:A15_HFE_P2_1-201202.
   </description>
   <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
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    <fields>5</fields>
    <groups>0</groups>
    <record_length unit="byte">76</record_length>
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     <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">14</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, 1970.
     </description>
     <Special_Constants>
      <missing_constant>-9.9990000E+03</missing_constant>
     </Special_Constants>
    </Field_Character>
    <Field_Character>
     <name>T</name>
     <field_number>2</field_number>
     <field_location unit="byte">16</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.
     </description>
     <Special_Constants>
      <missing_constant>-9.9990000E+03</missing_constant>
     </Special_Constants>
    </Field_Character>
    <Field_Character>
     <name>dT</name>
     <field_number>3</field_number>
     <field_location unit="byte">31</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. Note that
      most and perhaps all values in this set are 'saturated' -- soft-clipped at
      the instrument's dT maximums, +20/-30K -- and do not directly correspond
      to physical reality.
     </description>
     <Special_Constants>
      <missing_constant>-9.9990000E+03</missing_constant>
     </Special_Constants>
    </Field_Character>
    <Field_Character>
     <name>dT_corr</name>
     <field_number>4</field_number>
     <field_location unit="byte">46</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, corrected to remove numerical errors in the source set. Positive
      values mean the lower thermometer is warmer. Note that most and perhaps
      all values in this set are 'saturated' -- soft-clipped at the instrument's
      dT maximums, +20/-30K -- and do not directly correspond to physical
      reality.
     </description>
     <Special_Constants>
      <missing_constant>-9.9990000E+03</missing_constant>
     </Special_Constants>
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    <Field_Character>
     <name>flags</name>
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     <field_location unit="byte">61</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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