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        <logical_identifier>urn:nasa:pds:phx_meca:data_tecp_rhs:phx_tecp_rhs_recalibration_2019_curated</logical_identifier>
        <version_id>1.1</version_id>
        <title>Phoenix Thermal and Electrical Conductivity Probe (TECP) Recalibrated Relative Humidity Data</title>
        <information_model_version>1.12.0.0</information_model_version>
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        <Citation_Information>
            <author_list>Martinez, G. M.</author_list>
            <publication_year>2019</publication_year>
            <description>
                This dataset contains results from the recalibration of the TECP relative humidity sensor performed in a Martian environmental chamber at the University of Michigan. It expands the covered environmental conditions from the warmest and driest conditions observed at the Phoenix landing site, to the coldest and wettest.               
            </description>
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            <Modification_Detail>
                <modification_date>2026-06-11</modification_date>
                <version_id>1.1</version_id>
                <description>Added external reference DOI.</description>
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            <Modification_Detail>
                <modification_date>2019-09-04</modification_date>
                <version_id>1.0</version_id>
                <description>Initial version.</description>
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            <start_date_time>2008-05-26T00:00:00Z</start_date_time>
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            <name>Phoenix MECA TECP</name>
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                <name>MECA THERMAL AND ELECTRICAL CONDUCTIVITY PROBE</name>
                <type>Instrument</type>
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        <External_Reference>
            <doi>10.1029/2019JE006080</doi>
            <reference_text>
                Fischer, E., G. M. Martinez, N. O. Renno, L. K. Tamppari, and A. P. Zent, Relative Humidity on Mars: New Results from the Phoenix 
                TECP Sensor, Journal of Geophysical Research: Planets, doi:10.1029/2019JE006080, 2019.
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            <creation_date_time>2019-08-29T00:00:00Z</creation_date_time>
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            <offset unit="byte">0</offset>
            <parsing_standard_id>PDS DSV 1</parsing_standard_id>            
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            <field_delimiter>Comma</field_delimiter>
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                <fields>8</fields>
                <groups>0</groups>
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                    <name>Sol Number</name>
                    <field_number>1</field_number>
                    <data_type>ASCII_Integer</data_type>
                    <description>The sol number on which the measurement was taken.</description>
                </Field_Delimited>
                <Field_Delimited>
                    <name>LTST</name>
                    <field_number>2</field_number>
                    <data_type>ASCII_Real</data_type>
                    <description>The local true solar time (hours) at which the measurement was taken.</description>
                </Field_Delimited>
                <Field_Delimited>
                    <name>Board Temperature</name>
                    <field_number>3</field_number>
                    <data_type>ASCII_Real</data_type>
                    <unit>K</unit>
                    <description>The temperature of the TECP board.</description>
                </Field_Delimited>
                <Field_Delimited>
                    <name>Frost Point Temperature</name>
                    <field_number>4</field_number>
                    <data_type>ASCII_Real</data_type>
                    <unit>K</unit>
                    <description>The frost point temperature measured by the TECP RH sensor.</description>
                </Field_Delimited>
                <Field_Delimited>
                    <name>Water Vapor Pressure</name>
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                    <data_type>ASCII_Real</data_type>
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                    <description>The estimated uncertainty in water vapor pressure based on the error analysis.</description>
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                    <field_number>7</field_number>
                    <data_type>ASCII_Real</data_type>
                    <unit>ppm</unit>
                    <description>The water vapor volumetric mixing ratio obtained from the water vapor pressure and total pressure.</description>
                    <Special_Constants>
                        <unknown_constant>-999999</unknown_constant>
                    </Special_Constants>                   
                </Field_Delimited>
                <Field_Delimited>
                    <name>Relative Humidity at TECP Board</name>
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                    <unit>percent</unit>
                    <description>The relative humidity with respect to water ice obtained from the frost point and board temperatures.</description>
                </Field_Delimited>
            </Record_Delimited>
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