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<Product_Observational
   xmlns="http://pds.nasa.gov/pds4/pds/v1"
   xmlns:particle="http://pds.nasa.gov/pds4/particle/v2"
   xmlns:mess="http://pds.nasa.gov/pds4/mission/mess/v1"
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   xsi:schemaLocation="
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      https://pds.nasa.gov/pds4/particle/v2/PDS4_PARTICLE_1F00_2000.xsd

      http://pds.nasa.gov/pds4/mission/mess/v1
      https://pds.nasa.gov/pds4/mission/mess/v1/PDS4_MESS_1B00_1101.xsd
     ">
    <Identification_Area>
        <logical_identifier>urn:nasa:pds:mess-epps-eps-derived:data-pitch-angles:epsp_a2012360ddr</logical_identifier>
        <version_id>1.1</version_id>
        <title>MESSENGER EPPS EPS Derived Pitch Angle Spectrogram Data 2012-360 00:00:59.180 - 2012-360 23:59:55.181</title>
        <information_model_version>1.15.0.0</information_model_version>
        <product_class>Product_Observational</product_class>
        <Citation_Information>
            <author_list>Ho, G. C.</author_list>
            <publication_year>2021</publication_year>
            <description>
                This table contains Pitch Angles between the measured flow vector 
                direction and the magnetic field for each of the 6 sectors of
                the MESSENGER EPS instrument. Additional details are contained in 
                the DDR SIS document.
            </description>
        </Citation_Information>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2022-04-26</modification_date>
                <version_id>1.1</version_id>
                <description>
                    This version corrects minor errors in the PDS label files.
                    The data files are unchanged.
                </description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2021-05-11</modification_date>
                <version_id>1.0</version_id>
                <description>
                    This product, EPSP_A2012360DDR_V4.TAB, was originally released in 2015 
                    as part of the PDS3 MESS-E/V/H/SW-EPPS-3-EPS-DDR-V1.0 data set. 
                    The metadata have been migrated to PDS4. The data themselves are unchanged.
                </description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    <Observation_Area>
        <Time_Coordinates>
            <start_date_time>2012-12-25T00:00:59.180Z</start_date_time>
            <stop_date_time>2012-12-25T23:59:55.181Z</stop_date_time>
        </Time_Coordinates>
        <Primary_Result_Summary>
            <purpose>Science</purpose>
            <processing_level>Derived</processing_level>
            <Science_Facets>
                <domain>Heliosphere</domain>
                <domain>Magnetosphere</domain>
                <discipline_name>Particles</discipline_name>
                <facet1>Ions</facet1>
                <facet2>Energetic</facet2>
            </Science_Facets>
            <Science_Facets>
                <domain>Heliosphere</domain>
                <domain>Magnetosphere</domain>
                <discipline_name>Particles</discipline_name>
                <facet1>Electrons</facet1>
                <facet2>Energetic</facet2>
            </Science_Facets>
        </Primary_Result_Summary>
        <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>Host</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>EPPS Energetic Particle Spectrometer</name>
                <type>Instrument</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument:epps-eps.mess</lid_reference>
                    <reference_type>is_instrument</reference_type>
                </Internal_Reference>
            </Observing_System_Component>
        </Observing_System>
        <Target_Identification>
            <name>Solar Wind</name>
            <type>Plasma Stream</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:plasma_stream.solar_wind</lid_reference>
                <reference_type>data_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
        <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 Year 2</mess:mission_phase_name>
                <mess:spacecraft_clock_start_count>1/264881125</mess:spacecraft_clock_start_count>
                <mess:spacecraft_clock_stop_count>1/264967461</mess:spacecraft_clock_stop_count>
            </mess:MESSENGER>
        </Mission_Area>
        <Discipline_Area>
            <particle:Particle_Observation>
                <particle:energy_range_minimum unit="keV">25</particle:energy_range_minimum>
                <particle:energy_range_maximum unit="keV">500</particle:energy_range_maximum>
                <particle:Particle_Parameter>
                    <particle:particle_type>Electrons</particle:particle_type>
                    <particle:particle_measurement_type>Pitch Angle Distribution</particle:particle_measurement_type>
                </particle:Particle_Parameter>
            </particle:Particle_Observation>
            <particle:Particle_Observation>
                <particle:energy_range_minimum unit="keV">10</particle:energy_range_minimum>
                <particle:energy_range_maximum unit="MeV">3</particle:energy_range_maximum>
                <particle:Particle_Parameter>
                    <particle:particle_type>Ions</particle:particle_type>
                    <particle:particle_measurement_type>Pitch Angle Distribution</particle:particle_measurement_type>
                </particle:Particle_Parameter>
            </particle:Particle_Observation>
        </Discipline_Area>
    </Observation_Area>
    <Reference_List>
        <Source_Product_External>
            <external_source_product_identifier>MESS-E/V/H/SW-EPPS-3-EPS-DDR-V1.0:EPSP_A2012360DDR_V4</external_source_product_identifier>
            <reference_type>data_to_derived_source_product</reference_type>
            <doi>10.17189/1519741</doi>
            <curating_facility>NASA Planetary Data System</curating_facility>
            <description>This is the first version of this product converted to PDS4. The DOI provided
                references the PDS3 source data set.</description>
        </Source_Product_External>
    </Reference_List>
    <File_Area_Observational>
        <File>
            <file_name>EPSP_A2012360DDR_V4.TAB</file_name>
            <creation_date_time>2016-02-29T22:35:24.000Z</creation_date_time>
            <file_size unit="byte">4282715</file_size>
            <md5_checksum>eefc9ea05e032d4689ad71e01041892c</md5_checksum>
            <comment>This data file is unmodified from the PDS3 version.</comment>
        </File>
        <Header>
            <offset unit="byte">0</offset>
            <object_length unit="byte">167</object_length>
            <parsing_standard_id>7-Bit ASCII Text</parsing_standard_id>
            <description>The first record of this                  
    file is the header section. The header contains column 
    headings to improve usability.</description>
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            <offset unit="byte">167</offset>
            <records>25644</records>
            <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
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                <fields>7</fields>
                <groups>0</groups>
                <record_length unit="byte">167</record_length>
                <Field_Character> 
                    <name>TIME</name>
                    <field_number>1</field_number>
                    <field_location unit="byte">1</field_location>
                        <data_type>ASCII_Date_Time_DOY</data_type>
                    <field_length unit="byte">21</field_length>
                    <unit>UTC</unit>
                    <description>Spacecraft event time for this data record.</description>
                </Field_Character>
                <Field_Character> 
                    <name>PITCH_ANGLE_S0</name>
                    <field_number>2</field_number>
                    <field_location unit="byte">24</field_location>
                        <data_type>ASCII_Real</data_type>
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                    <unit>degrees</unit>
                    <description>Pitch Angle for Sector 0.</description>
                </Field_Character>
                <Field_Character> 
                    <name>PITCH_ANGLE_S1</name>
                    <field_number>3</field_number>
                    <field_location unit="byte">48</field_location>
                        <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">22</field_length>
                    <unit>degrees</unit>
                    <description>Pitch Angle for Sector 1.</description>
                </Field_Character>
                <Field_Character> 
                    <name>PITCH_ANGLE_S2</name>
                    <field_number>4</field_number>
                    <field_location unit="byte">72</field_location>
                        <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">22</field_length>
                    <unit>degrees</unit>
                    <description>Pitch Angle for Sector 2.</description>
                </Field_Character>
                <Field_Character> 
                    <name>PITCH_ANGLE_S3</name>
                    <field_number>5</field_number>
                    <field_location unit="byte">96</field_location>
                        <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">22</field_length>
                    <unit>degrees</unit>
                    <description>Pitch Angle for Sector 3.</description>
                </Field_Character>
                <Field_Character> 
                    <name>PITCH_ANGLE_S4</name>
                    <field_number>6</field_number>
                    <field_location unit="byte">120</field_location>
                        <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">22</field_length>
                    <unit>degrees</unit>
                    <description>Pitch Angle for Sector 4.</description>
                </Field_Character>
                <Field_Character> 
                    <name>PITCH_ANGLE_S5</name>
                    <field_number>7</field_number>
                    <field_location unit="byte">144</field_location>
                        <data_type>ASCII_Real</data_type>
                    <field_length unit="byte">22</field_length>
                    <unit>degrees</unit>
                    <description>Pitch Angle for Sector 5.</description>
                </Field_Character>
            </Record_Character>
        </Table_Character>
    </File_Area_Observational> 
</Product_Observational>
