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    <Identification_Area>
        <logical_identifier>urn:nasa:pds:lp-er-calibrated:data-lowresflux:el990201</logical_identifier>
        <version_id>1.0</version_id>
        <title>Lunar Prospector ER Low Resolution Electron Flux Data for 1999-02-01</title>
        <information_model_version>1.20.0.0</information_model_version>
        <product_class>Product_Observational</product_class>
        <Citation_Information>
            <author_list>Mitchell, David</author_list>
            <publication_year>2024</publication_year>
            <description>
                This file contains Lunar Prospector omni-directional low resolution electron flux data 
                for 1999-02-01 provided for 15 energy bins (~40ev - 20keV) collected over 16 spacecraft            
                rotations (~80 sec), sampling 4 pi steradians twice each spin period over a 1 day duration.                          
            </description>
        </Citation_Information>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2024-01-30</modification_date>
                <version_id>1.0</version_id>
                <description>
                    This product, EL990201.TAB, was originally released as part
                    of the PDS3 LP-L-ER-4-SUMM-OMNIDIRELEFLUX-V1.1 data set. The metadata
                    have been migrated to PDS4. The data themselves are unchanged, 
                    with the exception of the error described below.
                    
                    Some TAB files, in this collection, have been altered to account for
                    erroneous data values found in the electron flux energy bins.
                    
                    The original flagged values delivered by the instrument team are denoted as:
                    missing_constant = 9.999E-99
                    
                    These values have been flagged by the PPI node denoted as:
                    error_constant = -9.99E-99       
                </description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    <Observation_Area>
        <Time_Coordinates>
            <start_date_time>1999-02-01T00:00:44Z</start_date_time>
            <stop_date_time>1999-02-01T23:27:35Z</stop_date_time>
        </Time_Coordinates>
        <Primary_Result_Summary>
            <purpose>Science</purpose>
            <processing_level>Calibrated</processing_level>
            <description>Lunar Prospector omni-directional low resolution electron flux data</description>
            <Science_Facets>
                <discipline_name>Particles</discipline_name>
                <facet1>Electrons</facet1>
                <facet2>Plasma</facet2>
            </Science_Facets>
        </Primary_Result_Summary>
        <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>Electron Reflectometer for LP</name>
                <type>Instrument</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument:lp.er</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>
        <Discipline_Area>
            <msn:Mission_Information>
                <msn:mission_phase_name>Extended Mission</msn:mission_phase_name>
            </msn:Mission_Information>
            <particle:Particle_Observation>
                <particle:Particle_Parameter>
                    <particle:particle_type>Electrons</particle:particle_type>
                    <particle:particle_measurement_type>Energy Flux</particle:particle_measurement_type>
                </particle:Particle_Parameter>
            </particle:Particle_Observation>
        </Discipline_Area>
    </Observation_Area>
    <Reference_List>
        <Internal_Reference>
            <lidvid_reference>urn:nasa:pds:lp-er-calibrated:data-3deleflux-anc:outages::1.0</lidvid_reference>
            <reference_type>data_to_ancillary_data</reference_type>
        </Internal_Reference>
        <Internal_Reference>
            <lidvid_reference>urn:nasa:pds:lp-er-calibrated:data-3deleflux-anc:theta::1.0</lidvid_reference>
            <reference_type>data_to_ancillary_data</reference_type>
        </Internal_Reference>
        <Internal_Reference>
            <lidvid_reference>urn:nasa:pds:lp-mager-derived:data-moon-pos:moon_pos::1.0</lidvid_reference>
            <reference_type>data_to_ancillary_data</reference_type>
        </Internal_Reference>
        <Internal_Reference>   
            <lidvid_reference>urn:nasa:pds:lp-mager-derived:data-spacecraft-pos:pos99_02::1.0</lidvid_reference>
            <reference_type>data_to_ancillary_data</reference_type>
        </Internal_Reference>
        <Internal_Reference>
            <lidvid_reference>urn:nasa:pds:lp-er-calibrated:document:errata::1.0</lidvid_reference>
            <reference_type>data_to_document</reference_type>
        </Internal_Reference>
        <External_Reference>
            <reference_text>
                Binder, A.B., Feldman, W.C., Konopliv, A.S., Lin, R.P., Acuna, M.H.,       
                Hood, L.L., and Guinness, E.A., LP MOON SPACECRAFT ATTITUDE V1.0,          
                LP-L-ENG-6-ATTITUDE-V1.0, NASA Planetary Data System, 1998.
            </reference_text>
            <description>
                The Lunar Prospector Attitude data set consists of monthly values for the          
                spacecraft spin rate and spin axis orientation (attitude) as a function    
                of time located in the respective ATTITUDE.TAB.
            </description>
        </External_Reference>        
        <External_Reference>
            <reference_text>                
                Binder, A.B., Feldman, W.C., Konopliv, A.S., Lin, R.P., Acuna, M.H.,       
                Hood, L.L. and Guinness, E.A., LP MOON UPLINK COMMAND V1.0,                
                LP-L-ENG-6-COMMAND-V1.0, NASA Planetary Data System, 1998.
            </reference_text>
            <description>
                The Lunar Prospector Command data set contains commands sent to the spacecraft through one of the 
                Deep Space Network ground stations located in:
                C9903216.TAB, C9903246.TAB, C9903266.TAB
            </description>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Binder, A.B., W.C. Feldman, A.S. Konopliv, R.P. Lin, M.H. Acuna,           
                L.L. Hood, and E.A. Guinness, LP MOON SPACECRAFT EPHEMERIS V1.0,           
                LP-L-6-EPHEMERIS-V1.0, NASA Planetary Data System, 1998. 
            </reference_text>
            <description>
                The Lunar Prospector Ephemeris data set consists of spacecraft position    
                and velocity determinations as a function of time in Moon-centered, Earth  
                equator, mean of J2000 coordinates located in:
                E990201.DAT
            </description>
        </External_Reference>
        <Source_Product_External>
            <external_source_product_identifier>LP-L-ER-4-SUMM-OMNIDIRELEFLUX-V1.1:EL990201:EL990201.TAB</external_source_product_identifier>
            <reference_type>data_to_calibrated_source_product</reference_type>
            <doi>10.17189/6141-xx15</doi>
            <curating_facility>PDS Planetary Plasma Interactions Node</curating_facility>
            <description>
                This is the first version converted to PDS4. The DOI references the source PDS3 data set.  
            </description>
        </Source_Product_External>
    </Reference_List>
    <File_Area_Observational>
        <File>
            <file_name>EL990201.TAB</file_name>
            <creation_date_time>2003-08-13T15:52:46</creation_date_time>
            <file_size unit="byte">167012</file_size>
            <md5_checksum>8312ea9e11e2aa664ca8b29522e306e4</md5_checksum>
        </File>
        <Table_Character>
            <name>Lunar Prospector ER Low Resolution Electron Flux Data</name>
            <offset unit="byte">0</offset>
            <records>971</records>
            <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
            <Record_Character>
                <fields>1</fields>
                <groups>1</groups>
                <record_length unit="byte">172</record_length>
                <Field_Character>
                      <name>Time</name>
                      <field_number>1</field_number>                      
                      <field_location unit="byte">1</field_location>
                      <data_type>ASCII_Date_Time_YMD</data_type>                                                             
                      <field_length unit="byte">19</field_length>             
                      <description>
                          This column contains spacecraft event time (SCET) of the center of        
                          the 5 second averaging window.  Averages are non-overlapping.             
                          The time format is the PDS time format:  yyyy-mm-ddThh:mm:ss.
                      </description>
                </Field_Character>
                <Group_Field_Character>
                    <repetitions>15</repetitions>
                    <fields>1</fields>
                    <groups>0</groups>
                    <group_location unit="byte">21</group_location>
                    <group_length unit="byte">150</group_length>
                    <Field_Character>
                        <name>eflux_bin</name>
                        <field_location unit="byte">1</field_location>
                        <data_type>ASCII_Real</data_type>
                        <field_length unit="byte">10</field_length>
                        <unit>cm**-2 * s**-1 * sr**-1 * eV**-1</unit>
                        <description>
                            Omni-directional electron flux from the first - fifteenth energy bin 
                            listed in the E_BINS.TAB file for these data.
                                
                            missing_constant = 9.999E-99 represents the flagged values from the instrument team.
                            error_constant = -9.99E-99 represents the flagged value from the PPI Node.
                        </description>
                        <Special_Constants>
                          <missing_constant>9.999E-99</missing_constant>
                          <error_constant>-9.99E-99</error_constant>
                        </Special_Constants>
                    </Field_Character>
                </Group_Field_Character>      
            </Record_Character>
        </Table_Character>
    </File_Area_Observational>
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