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PDS_VERSION_ID        = PDS3                                                  
DATA_SET_ID           = "MGS-M-MAG-3-MAPPING-HIGHRES-V1.0"                    
RECORD_TYPE           = STREAM                                                
OBJECT                = TEXT                                                  
  PUBLICATION_DATE      = 2009-02-01                                          
  NOTE                  = "AAREADME.TXT describes this archive product."      
END_OBJECT            = TEXT                                                  
END                                                                           
                                                                              
                            Mars Global Surveyor                              
                                                                              
                                Magnetometer                                  
                                                                              
                 MAG High-Resolution (Detail) Mapping Data                    
                                                                              
               Planetary Plasma Interactions Discipline Node                  
                                                                              
                                   of the                                     
                                                                              
                            Planetary Data System                             
                                                                              
==============================================================================
Introduction                                                                  
==============================================================================
                                                                              
This data set contains the High-Resolution (Detail) data from the             
Mars Global Surveyor (MGS) Magnetometer (MAG) instrument, submitted to        
the Planetary Data System (PDS).  The data set contains data from the         
mapping period of the mission (Mapping phase and Extended Missions).          
                                                                              
Users are encouraged to provide comments back to the PPI Node of the PDS      
if errors or omissions are found either in data or in documentation.          
Please send comments by e-mail or U.S. mail to PDS Operator as defined        
at the end of this document.                                                  
                                                                              
Questions regarding data content, processing, or quality should be sent to    
                                                                              
     Dr. J.E.P. Connerney          jack.connerney@nasa.gov                    
     NASA Goddard Space Flight Center                                         
     Code 695                                                                 
     Greenbelt, MD 20771                                                      
                                                                              
                                                                              
==============================================================================
Brief Volume Description                                                      
==============================================================================
                                                                              
This data set contains MGS MAG high time resolution (Detail) data             
from the mapping phases of the MGS mission.  The mapping                      
phases include the prime mission Mapping phase and the Extended               
Mission phases until end of mission.                                          
                                                                              
All data files are stored in the "DATA" branch of the directory tree.         
All data are stored in ASCII tables with attached MAG team headers.           
                                                                              
The main documentation for this volume is located in the CATALOG              
directory.  The data set is documented as part of the archive                 
(*DS.CAT); so are the MAG instrument (*INST.CAT), the MGS                     
mission (MISSION.CAT) and spacecraft (MGS_HOST.CAT), the MAG/ER               
team, and useful literature references.                                       
                                                                              
All data files in this volume are described by detached PDS labels (.LBL)     
and format files (.FMT).  Metadata are stored as text files with the data.    
Information on the particular form of metadata used in the PDS catalog can    
be found in the CATALOG directory.                                            
                                                                              
==============================================================================
Volume Format Information                                                     
==============================================================================
                                                                              
These data are stored on media appropriate for online delivery.               
                                                                              
==============================================================================
File Formats                                                                  
==============================================================================
                                                                              
The data files on this volume are ASCII text files.  All data files           
are described by detached PDS labels. A detached label file has the           
same name as the data file that it describes, but with the extension          
.LBL.                                                                         
                                                                              
All documents, detached PDS labels, and HTML files (if any) are stream        
format files, with a carriage return (ASCII 13) and a line feed               
character (ASCII 10) at the end of the record.  This allows the files         
to be read by MacOS, DOS, Windows, UNIX, and VMS operating systems.           
UNIX system users may see an unnecessary carriage return character            
(^M) at the end of each line. Mac users may see an unnecessary line           
feed character (^J) at the start of each line.                                
                                                                              
PDS labels are object-oriented.  The object to which the label                
refers (e.g., SERIES, TABLE, etc.) is denoted by a statement of               
the form:                                                                     
                                                                              
          ^object = location                                                  
                                                                              
in which the caret character (^, also called a pointer in this                
context) indicates that the object starts at the given location.  For         
an object in the same file as the label, the location is an integer           
representing the starting record number or byte of the object (the first      
record/byte in the file is 1).  For an object located outside the             
label file, the location denotes the name of the file containing the          
object, along with the starting record or byte number.  For example:          
                                                                              
^SERIES            = ("20903684.DAT", 3)                                      
                                                                              
indicates that the SERIES object begins at record 3 of the file               
20903684.DAT, in the same directory as the detached label file. Below         
is a list of the possible formats that use the ^object keyword.               
                                                                              
          ^object = n                                                         
          ^object = n❮BYTES❯                                                  
          ^object = ("filename.ext",n)                                        
          ^object = ("[dirlist]filename.ext",n)                               
          ^object = ("filename.ext",n❮BYTES❯)                                 
          ^object = ("[dirlist]filename.ext",n❮BYTES❯)                        
                                                                              
where          n    is the starting record or byte number of the object,      
                    counting from the beginning of the file (record 1,        
                    byte 1); default is record number.                        
          ❮BYTES❯   indicates that number given is in units of bytes.         
          filename  upper-case file name.                                     
          ext       upper-case file extension.                                
          dirlist*  period-delimited path-list of parent directories,         
                    in upper case, that specifies the object file             
                    directory (used only when the object is not in the        
                    same directory as the label file).                        
                                                                              
* All PDS labels on this volume are located in the same directory as          
  the file they describe so this construct is not used here.                  
                                                                              
In cases where many files of the same format or structure are present,        
the structure description component may optionally be detached from the       
primary label.  This minimizes repeating information which does not vary      
from file to file. In these cases, a format file (.FMT) contains the          
file structure information and the base label (.LBL) describes the            
parameters which generally do vary from file to file (number of records,      
file name, start/stop time, etc.). When a format file is used within the      
PDS label, the syntax is:                                                     
                                                                              
^STRUCTURE    = filename                                                      
                                                                              
Example:                                                                      
                                                                              
^STRUCTURE    = "EDRHDR.FMT"                                                  
                                                                              
Syntactically, the contents of the format file can be inserted directly       
into the base label such that the entire file contents replace the single     
line ^STRUCTURE = filename.                                                   
                                                                              
==============================================================================
Errata                                                                        
==============================================================================
                                                                              
There is a file called ERRATA.TXT found at the root level of this volume      
which contains a list of known deficiencies or caveats associated with        
data on this volume.  This file will be updated if any new changes or         
errors are found.                                                             
                                                                              
If you find an error on this volume, please report the error to the PDS       
Operator at the PPI Node of the PDS.                                          
                                                                              
  Email             pds_operator@igpp.ucla.edu                                
                                                                              
  Telephone         (310) 206-6073                                            
                                                                              
  U.S. Mail         PDS Operator                                              
                    c/o Dr. Raymond Walker                                    
                    UCLA - IGPP                                               
                    Los Angeles, CA 90095-1567                                
                                                                              
Only through support and feedback of the users of these data can an           
effective errata list be maintained.                                          
                                                                              
==============================================================================
Software                                                                      
==============================================================================
                                                                              
There is no software provided with these data at this time.                   
                                                                              
==============================================================================
Volume Contents and Structure                                                 
==============================================================================
                                                                              
This section describes the volume structure and naming conventions. Below is  
a tree diagram of the volume, followed by a description of the directory      
function and key files in each directory.                                     
                                                                              
 Root directory                                                               
   |                                                                          
   |- AAREADME.TXT  Describes volume contents, organization and volume use    
   |                (this file).                                              
   |                                                                          
   |- ERRATA.TXT    Describes known deficiencies or caveats in the data or    
   |                on this volume.                                           
   |                                                                          
   |- VOLDESC.CAT   High-level description of volume contents.                
   |                                                                          
   |- [CATALOG]     Information on the data set and how it is processed       
   |                and produced.  Also contains information regarding        
   |                Mars Global Surveyor, the MAG instrument, personnel       
   |                involved, and pertinent literature references.            
   |                                                                          
   |- [DATA]        Contains all data in a branching tree structure of        
                    subdirectories corresponding to years and months          
                    of data.                                                  
                                                                              
                                                                              
==============================================================================
Contacts                                                                      
==============================================================================
                                                                              
For questions or problems regarding this volume, please contact the PDS/PPI   
PDS operator:                                                                 
                                                                              
  Email             pds_operator@igpp.ucla.edu                                
                                                                              
  Telephone         (310) 206-6073                                            
                                                                              
  U.S. Mail         PDS Operator                                              
                    c/o Dr. Raymond Walker                                    
                    3845 Slichter Hall                                        
                    UCLA - IGPP                                               
                    Los Angeles, CA 90095-1567                                
                                                                              
For questions regarding PDS Standards or other data available from the        
PDS, please contact PDS Operator at the PDS Engineering Node (at JPL):        
                                                                              
  Email             pds_operator@jpl.nasa.gov                                 
                                                                              
  Telephone         (818) 354-4321                                            
                                                                              
  U.S. Mail         Planetary Data System, PDS Operator                       
                    Jet Propulsion Laboratory                                 
                    Mail Stop 168-400                                         
                    4800 Oak Grove Dr.                                        
                    Pasadena, CA 91109-8099                                   
                                                                              
The PDS, and the Planetary Plasma Interactions (PPI) Node in particular,      
assume no legal liability for errors on this volume. All users are encouraged 
to verify the "correctness" of the data prior to submitting any publications  
or other work based on these data. Errors on this volume should be reported   
back to the PPI Node of the PDS through the ERRATA reporting procedures       
described above.