PDS_VERSION_ID                          = PDS3                                
RECORD_TYPE                             = FIXED_LENGTH                        
RECORD_BYTES                            = 60                                  
FILE_RECORDS                            = 1258                                
DATA_SET_ID                             = "MPF-M-RSS-1/5-RADIOTRACK-V1.0"     
TARGET_NAME                             = "MARS"                              
INSTRUMENT_HOST_NAME                    = "VIKING LANDER"                     
MISSION_PHASE_NAME                      = "SURFACE OPERATIONS"                
INSTRUMENT_NAME                         = "RADIO SCIENCE SUBSYSTEM"           
INSTRUMENT_ID                           = "RSS"                               
DSN_STATION_NUMBER                      = {12,14,42,43,61,63}                 
PRODUCT_CREATION_TIME                   = "N/A"                               
START_TIME                              = 1976-07-21T07:58:52Z                
STOP_TIME                               = 1982-11-13T01:46:15Z                
DESCRIPTION                             = "Radio range                        
    measurements ordered by time, including DSN station IDs and               
    estimated measurement error, from Viking Landers 1&2, which were          
    used in conjunction with data from Mars Pathfinder to solve for           
    Mars rotation parameters.                                                 
    Note that DSS station 61, was raised 10 feet on 9-AUG-1979,               
    so the station position needs to be adjusted from the current             
    value for data before that time.                                          
    24 Viking lander range measurements taken from DSN stations               
    that no longer exist are not included here.                               
    The measurements have been corrected for station calibrations             
    and Earth troposphere and ionosphere calibrations.                        
    Through 9 August 1980 the Viking lander range was also                    
    corrected for delay due to the solar plasma, with                         
    calibrations provided by dua;-frequency ranging to                        
    the Viking orbiters."                                                     
^RANGE_DATA_TABLE                       = "VIK_RANG.TAB"                      
                                                                              
OBJECT                                  = RANGE_DATA_TABLE                    
  NAME                                  = "Range Measurements"                
  INTERCHANGE_FORMAT                    = ASCII                               
  ROWS                                  = 1258                                
  COLUMNS                               = 6                                   
  ROW_BYTES                             = 60                                  
                                                                              
OBJECT                                  = COLUMN                              
  COLUMN_NUMBER                         = 1                                   
  NAME                                  = "TIMETAG"                           
  DATA_TYPE                             = TIME                                
  START_BYTE                            = 1                                   
  BYTES                                 = 23                                  
  UNIT                                  = "N/A"                               
  DESCRIPTION                           = "Day and UTC time of reception      
                                            of signal at station."            
END_OBJECT                              = COLUMN                              
                                                                              
OBJECT                                  = COLUMN                              
  COLUMN_NUMBER                         = 2                                   
  NAME                                  = "TRANSMITTER"                       
  DATA_TYPE                             = ASCII_INTEGER                       
  START_BYTE                            = 25                                  
  BYTES                                 = 3                                   
  FORMAT                                = "I3"                                
  UNIT                                  = "N/A"                               
  DESCRIPTION                           = "Transmitting DSN station number"   
END_OBJECT                              = COLUMN                              
                                                                              
OBJECT                                  = COLUMN                              
  COLUMN_NUMBER                         = 3                                   
  NAME                                  = "LANDER"                            
  DATA_TYPE                             = ASCII_INTEGER                       
  START_BYTE                            = 29                                  
  BYTES                                 = 3                                   
  FORMAT                                = "I3"                                
  UNIT                                  = "N/A"                               
  DESCRIPTION                           = "Lander number (1=Viking 1,         
                                            2=Viking 2, 3=Pathfinder)"        
END_OBJECT                              = COLUMN                              
                                                                              
OBJECT                                  = COLUMN                              
  COLUMN_NUMBER                         = 4                                   
  NAME                                  = "RECEIVER"                          
  DATA_TYPE                             = ASCII_INTEGER                       
  START_BYTE                            = 33                                  
  BYTES                                 = 3                                   
  FORMAT                                = "I3"                                
  UNIT                                  = "N/A"                               
  DESCRIPTION                           = "Receiving DSN station number"      
END_OBJECT                              = COLUMN                              
                                                                              
OBJECT                                  = COLUMN                              
  COLUMN_NUMBER                         = 5                                   
  NAME                                  = "RTLT"                              
  DATA_TYPE                             = ASCII_REAL                          
  START_BYTE                            = 37                                  
  BYTES                                 = 15                                  
  FORMAT                                = "F15.3"                             
  UNIT                                  = "N/A"                               
  DESCRIPTION                           = "Round-trip light time, in          
                                           microseconds."                     
END_OBJECT                              = COLUMN                              
                                                                              
OBJECT                                  = COLUMN                              
  COLUMN_NUMBER                         = 6                                   
  NAME                                  = "SIGMA"                             
  DATA_TYPE                             = ASCII_REAL                          
  START_BYTE                            = 53                                  
  BYTES                                 = 6                                   
  FORMAT                                = "F6.3"                              
  UNIT                                  = "N/A"                               
  DESCRIPTION                           = "Estimated measurement error, in    
                                            microseconds."                    
END_OBJECT                              = COLUMN                              
                                                                              
END_OBJECT                              = RANGE_DATA_TABLE                    
END