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| Scheduled Maintenance |  
| This site may be down on Thursdays 
between 7:00 and 9:30 pm Central Time for maintenance. |  | 2001 Mars Odyssey: GRS 
                        AND 
                          
                          
                           
                             | January 3, 2017. 
						Release 58 includes new Averaged 
						Neutron Data (AND) acquired between April 4 and June 28, 2016.   |  GRS Averaged Neutron Data (AND) products are organized as a single 
virtual volume. Each data file represents a time period of 15 degrees of solar 
longitude (Ls). Each record in the file corresponds to a 5x5 degree 
latitude-longitude bin. Data subdirectories are grouped into directories by 
mission year.   Use the links below for direct HTTP access to any part 
						of the GRS AND archive. Alternatively, to search the 
						archive for data that meet particular criteria, e.g. 
						time and location, use the 
						Mars Orbital 
						Data Explorer (ODE). 
  
  
    
      | AAREADME.TXT | Introduction to the archive |  
      | ERRATA.TXT | Notes and errata for this release |  
      | YR08 directory | Data products acquired during Odyssey mapping year 8 (Ls 0 - 165, 6/19/15 - 6/28/16)
 |  
      | YR07 directory | Data products acquired during Odyssey mapping year 7 (Ls 0 - 360, 8/1/13 - 6/12/15)
 |  
      | YR06 directory | Data products acquired during Odyssey mapping year 6 (Ls 0 - 360, 9/14/11 - 8/1/13)
 |  
      | YR05 directory | Data products acquired during Odyssey mapping year 5 (Ls 0 -360, 12/29/09 - 9/14/11)
 |  
      | YR04 directory | Data products acquired during Odyssey mapping year 4 (Ls 0 - 270, 12/10/07 - 5/11/09)
 |  
      | YR03 directory | Data products acquired during Odyssey mapping year 3 (Ls 0 - 360, 1/22/06 - 12/10/07)
 |  
      | YR02 directory | Data products acquired during Odyssey mapping year 2 (Ls 0 - 360, 3/6/04 - 1/22/06)
 |  
      | YR01 directory | Data products acquired during Odyssey mapping year 1 (Ls 0 - 360, 4/19/02 - 3/6/04)
 |  
      | YR00 directory | Data products acquired during Odyssey mapping year 0 (Ls 315 - 360, 1/25/02 - 4/19/02)
 |  
      | INDEX directory | Index of all products in the archive |  
      | DOCUMENT directory | Documentation for the archive |  
      | CATALOG directory | Information about the archive in the PDS Catalog |  
      | LABEL directory | Format files referenced by the PDS labels. These format files describe 
      the column layout of the  data files. |  
      | SOFTWARE directory | Java source code library for parsing GRS data files |  
      | Root directory | Top-level directory of the virtual volume |    |