PDS_VERSION_ID                     = PDS3
LABEL_REVISION_NOTE                = "2006-08-31 GEO:shs Created;
                                     2007-03-07 EN:bjs shortened dsname
                                     and created two dshost objects;
                                     2009-05 GEO:  added reference"
RECORD_TYPE                        = STREAM
                                   
OBJECT                             = DATA_SET
  DATA_SET_ID                      = "MER1/MER2-M-APXS-5-OXIDE-SCI-V1.0"
                                   
  OBJECT                           = DATA_SET_INFORMATION
    DATA_SET_NAME                  = "MER ALPHA PARTICLE X-RAY SPECTROMETER 5
                                      OXIDE ABUNDANCE V1.0"
    DATA_SET_COLLECTION_MEMBER_FLG = N
    ARCHIVE_STATUS                 = "IN QUEUE"
    DATA_OBJECT_TYPE               = SPREADSHEET
    START_TIME                     = 2004-01-04
    STOP_TIME                      = NULL
    DATA_SET_RELEASE_DATE          = 2006-08-31
    PRODUCER_FULL_NAME             = "RALF GELLERT"
    DETAILED_CATALOG_FLAG          = Y
    DATA_SET_TERSE_DESC            = "Mars Exploration Rover Alpha 
                                 Particle X-ray Spectrometer Oxide 
                                 Abundance Data"
    CITATION_DESC                  = "Gellert, Ralf,
                                  MER 1 Alpha Particle
                                  X-Ray Spectrometer 2 X-Ray Spectra
                                  V1.0, NASA Planetary Data System,
                                  MER1-M-APXS-2-XRAYSPEC-SCI-V1.0, 2004."
    ABSTRACT_DESC                  = "This archive contains oxide abundance data 
derived from the APXS Reduced Data Record (RDR) products on the Mars Exploration Rovers. 
The data consist of one file for each rover. When new APXS RDR data 
appear in a MER release, the oxide abundance data are revised in the 
following release approximately three months later. Hence the oxide 
data lag behind the EDR and RDR data by one release."
    DATA_SET_DESC                  = "

  Data Set Overview
  =================
    This archive contains oxide abundance data derived from X-ray analyses
    of the MER APXS (Alpha Particle X-Ray Spectrometer) Reduced Data
    Record (RDR) products. A description of the data analysis procedure
    and interpretation of the results can be found in Gellert, R., et al.
    (2006), Alpha Particle X-Ray Spectrometer (APXS): Results from Gusev
    crater and calibration report, J. Geophys. Res., 111, E02S05,
    doi:10.1029/2005JE002555 [GELLERTETAL2006], and in Ming, D.W. et al. 
    (2008), Results of the Alpha Particle X-Ray Spectrometer from Cumberland 
    Ridge to Home Plate, J. Geophys. Res., 113, E12S39, 
    doi:10.1029/2008JE003195 [MINGETAL2008].
 
 
  Processing
  ==========
    The Committee On Data Management and Computation (CODMAC) data
    level numbering system is used to describe the processing level
    of the oxide abundance data product.  The products are considered
    CODMAC Level 5, Derived Data equivalent to NASA level 3.
 
    The APXS oxide abundance data products were generated by the MER APXS
    Team. A nonlinear least squares algorithm was used to derive peak areas
    of characteristic element lines from APXS summed spectra. Peak areas
    were converted into element or oxide concentration using instrument
    calibration tables. Details of data processing and calibration are
    given in Gellert et al. 2006. The data were derived from
    APXS reduced data records (RDRs) from both rovers.
 
 
  Data
  ====
    Each APXS oxide abundance data file is a table. Columns are
    variable length and are delimited with commas. Each row is
    terminated with a carriage return and line feed character.
    
    "

    CONFIDENCE_LEVEL_NOTE         = "NULL"

  END_OBJECT                      = DATA_SET_INFORMATION

  OBJECT                          = DATA_SET_TARGET
    TARGET_NAME                   = MARS
  END_OBJECT                      = DATA_SET_TARGET

  OBJECT                          = DATA_SET_MISSION
    MISSION_NAME                  = "MARS EXPLORATION ROVER"
  END_OBJECT                      = DATA_SET_MISSION

  OBJECT                          = DATA_SET_HOST
    INSTRUMENT_HOST_ID            = "MER1"
    INSTRUMENT_ID                 = "APXS"
  END_OBJECT                      = DATA_SET_HOST

  OBJECT                          = DATA_SET_HOST
    INSTRUMENT_HOST_ID            = "MER2"
    INSTRUMENT_ID                 = "APXS"
  END_OBJECT                      = DATA_SET_HOST

  OBJECT                          = DATA_SET_REFERENCE_INFORMATION
    REFERENCE_KEY_ID              = "GELLERTETAL2006"
  END_OBJECT                      = DATA_SET_REFERENCE_INFORMATION
  
  OBJECT                           = DATA_SET_REFERENCE_INFORMATION
    REFERENCE_KEY_ID               = "MINGETAL2008"
  END_OBJECT                       = DATA_SET_REFERENCE_INFORMATION

END_OBJECT                        = DATA_SET
END