PDS_VERSION_ID                = PDS3
RECORD_TYPE                   = STREAM
OBJECT                        = TEXT
  NOTE                        = "Revision comments for the MGS-TES Data Tool,
                                 a web-based Vanilla query interface"
  PUBLICATION_DATE            = 2012-01-05
END_OBJECT                    = TEXT
END


  ABOUT THE MGS-TES DATA TOOL

The TES Data Tool (http://tes.asu.edu/data_tool/) provides access to all
data available in the Mars Global Surveyor Thermal Emission Spectrometer 
(MGS-TES) Data Archive.  The tool allows users to select fields and define
constraints that are used to query the TES data tables with the Vanilla
software.  More information about the dataset and the software are available
at http://tes.asu.edu/documentation/index.html.


  REVISION LOG FOR THE MGS-TES DATA TOOL

This document contains comments and errata concerning the MGS-TES Data Tool
beginning with the changes made during summer 2011.  Errata items are listed 
chronologically by date.


2011-07-05
Added New Constraint and Selection Options for Scan Length

    A new constraint option was added to allow no constraint (None) on 
    the wavelength field value;  the default remains unchanged set to
    constrain Scan Length = singles (10 cm-1).  Also, the Scan Length
    value per observation may be selected for return using the field
    entry newly added under the "Additional OBS Fields" menu.

    These changes were made primarily to eliminate inappropriate wavelength
    constraints when querying bolometric data.  The TES Team Scientists 
    highly recommend defining a Scan Length constraint whenever spectral
    data and/or spectral derived fields are selected for return. 
     Additional information may be found in the updated Glossary entries for:

       Emissivity, Radiance, and Wavelength/Scan Length.


2011-08-26
Typographic Error in Short Wave Depth Index Glossary Entry Corrected

    An error in the glossary entry for Emissivity Indexes and Ratios, 
    Short Wave Depth Index was corrected.  This index is actually
    calculated over the wavelength range of 1354-1397 (cm-1).  Note
    this errata is only a documentation error; there is no change to
    the data returned by selecting this field.


2012-01-05
TES Data Tool Temporarily Unavailable

   The TES Data Tool will be temporarily unvailable on 2012-01-05 for 
   system maintenance. 
   Update: the tool should now be fully operational.
   Thank you for your patience.