PDS_VERSION_ID                        = PDS3                                  
RECORD_TYPE                           = FIXED_LENGTH                          
RECORD_BYTES                          = 66                                    
FILE_RECORDS                          = 26                                    
^TABLE                                = "USOM1032.TAB"                        
                                                                              
DATA_SET_ID                           = "MGS-M-RSS-1-MAP-V1.0"                
PRODUCT_ID                            = "USOM1032.TAB"                        
PRODUCT_TYPE                          = USO                                   
INSTRUMENT_HOST_NAME                  = "MARS GLOBAL SURVEYOR"                
INSTRUMENT_NAME                       = "RADIO SCIENCE SUBSYSTEM"             
TARGET_NAME                           = MARS                                  
PRODUCT_CREATION_TIME                 = 2007-07-30T21:10:00                   
MISSION_NAME                          = "MARS GLOBAL SURVEYOR"                
MISSION_PHASE_NAME                    = "MAPPING"                             
ORBIT_NUMBER                          = "N/A"                                 
START_TIME                            = 1996-11-19T20:56:09                   
STOP_TIME                             = 2001-02-01T00:15:03                   
                                                                              
OBJECT                                = TABLE                                 
 INTERCHANGE_FORMAT                   = ASCII                                 
 ROWS                                 = 26                                    
 COLUMNS                              = 4                                     
 ROW_BYTES                            = 66                                    
 ROW_SUFFIX_BYTES                     = 0                                     
 DESCRIPTION                          = "This table contains the model for    
    drift of the Mars Global Surveyor (MGS) UltraStable Oscillator (USO)      
    used by the MGS Radio Science Team during regular mission operations.     
    Each row, or record, gives coefficients for linear piecewise continuous   
    segments of a curve which describes USO frequency as a function of time.  
    Columns give solution date/time, start date/time for a linear segment,    
    initial frequency at that start date/time, and drift rate over the        
    interval.  It is assumed the last set of coefficients is valid to at      
    least the final solution date/time.  The data fields occupy 64 bytes;     
    each row is delimited by an ASCII carriage-return line-feed pair."        
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 1                                     
  NAME                                = "SOLUTION DATE"                       
  DATA_TYPE                           = TIME                                  
  START_BYTE                          = 1                                     
  BYTES                               = 17                                    
  FORMAT                              = "N/A"                                 
  UNIT                                = "N/A"                                 
  DESCRIPTION                         = "The date and time at which the       
                                         coefficients in this row were        
                                         determined."                         
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 2                                     
  NAME                                = "START TIME"                          
  DATA_TYPE                           = TIME                                  
  START_BYTE                          = 19                                    
  BYTES                               = 17                                    
  FORMAT                              = "N/A"                                 
  UNIT                                = "N/A"                                 
  DESCRIPTION                         = "The date and time at which the       
                                         interval begins.  This is the time   
                                         on Earth (ERT) when the signal was   
                                         received.  The one-way light time    
                                         must be subtracted to get the time   
                                         at the spacecraft when the signal    
                                         was transmitted."                    
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 3                                     
  NAME                                = "FIRST FREQUENCY"                     
  DATA_TYPE                           = ASCII_REAL                            
  START_BYTE                          = 37                                    
  BYTES                               = 15                                    
  FORMAT                              = "F15.3"                               
  UNIT                                = "HERTZ"                               
  DESCRIPTION                         = "The X-band frequency transmitted from
                                         the spacecraft at START TIME minus   
                                         the one-way light time."             
 END_OBJECT                           = COLUMN                                
                                                                              
 OBJECT                               = COLUMN                                
  COLUMN_NUMBER                       = 4                                     
  NAME                                = "FREQUENCY DRIFT"                     
  DATA_TYPE                           = ASCII_REAL                            
  START_BYTE                          = 53                                    
  BYTES                               = 12                                    
  FORMAT                              = "E12.4"                               
  UNIT                                = "HERTZ PER SECOND"                    
  DESCRIPTION                         = "The average rate at which the X-band 
                                         transmitted signal changes during the
                                         interval which begins at START TIME."
 END_OBJECT                           = COLUMN                                
                                                                              
END_OBJECT                            = TABLE                                 
                                                                              
END