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    <level>3</level>
    <period>yearly</period>
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  <documentation>
    <doc_atbd>xxxxx_ATBD_xxxxx</doc_atbd>
    <doc_iodd>xxxxx_IODD_xxxxx</doc_iodd>
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  <instrument_information>
    <instrument_short_name>MERIS</instrument_short_name>
    <instrument_long_name>Medium Resolution Imaging Spectrometer</instrument_long_name>
    <plateform_name>ENVISAT</plateform_name>
  </instrument_information>
  <processing_information>
    <processing_centre>ACRI-ST</processing_centre>
    <processing_software_name>MKL3</processing_software_name>
    <processing_software_version>MKL3/3.2c </processing_software_version>
    <processing_utc>16-DEC-0005 13:57:20.000000</processing_utc>
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    <aoi_name>global</aoi_name>
    <grid_type>2</grid_type>
    <grid_name>sinusoidal</grid_name>
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      <maximum>     180.000</maximum>
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      <step_km>    9.276625</step_km>
      <longitude_units>degrees_east</longitude_units>
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    <var_short_name>N443</var_short_name>
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