PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = FIXED_LENGTH                                          
RECORD_BYTES          = 80                                                    
OBJECT                = TEXT                                                  
  INTERCHANGE_FORMAT    = ASCII                                               
  PUBLICATION_DATE      = 2001-03-10                                          
  NOTE                  = "N/A"                                               
END_OBJECT            = TEXT                                                  
                                                                              
END                                                                           
                                                                              
         Mars Global Surveyor Radio Science Team Raw Data Archive             
                          Extended Mission Phase                              
                          (MGS-M-RSS-1-EXT-V1.0)                              
                                                                              
                               ERRATA.TXT                                     
                              1 March 2001                                    
                              R.A. Simpson                                    
                          Stanford  University                                
                                                                              
                                                                              
==============================================================================
INTRODUCTION                                                                  
==============================================================================
                                                                              
     This file contains an accumulation of corrections and notes for the      
Mars Global Surveyor Radio Science Team Raw Data Archive - Extended Mission   
Phase.                                                                        
                                                                              
                                                                              
==============================================================================
CORRECTIONS AND NOTES                                                         
==============================================================================
                                                                              
MORS_0601  An error in predicting occultation times led to situations in which
   and      spacecraft telemetry modulation was turned on before the ingress  
MORS_0602   occultation took place (a reconfiguration that usually takes place
            while the spacecraft is in deep occultation).  In other cases not 
            only was the telemetry state changed, but the power amplifier was 
            turned off.  Occultations for which the controlling SOE was       
            mm111b.04.tsoe (1035039D.SOE) should be used with caution.  For   
            occultation 8574i captured in 10371535.ODR the predicted          
            occultation time was 41 s early; for occultation 8587i            
            (10381705.ODR) the predicted time was 47 s early.  For more detail
            see HEA/HEA1039A.TXT and its two figures on MORS_0602.  The       
            following table lists occultations and ODR files known to be      
            corrupted.  Note that occultations 8572i and 8573i did not seem   
            to be affected.                                                   
                                                                              
                  Occ      DSS        Start Time            ODR               
                 -----    -----    -----------------    ------------          
                 8570i    DSS63    2001/037T07:45:26    10370745.ODR          
                 8571i    DSS63    2001/037T09:42:00    10370942.ODR          
                 8571i    DSS25    2001/037T09:42:00    1037094C.ODR          
                 8574i    DSS45    2001/037T15:35:00    10371535.ODR          
                 8575i    DSS45    2001/037T17:32:00    10371732.ODR          
                 8576i    DSS45    2001/037T19:30:00    10371930.ODR          
                 8582i    DSS54    2001/038T07:16:00    10380716.ODR          
                 8583i    DSS54    2001/038T09:14:00    10380914.ODR          
                 8584i    DSS25    2001/038T11:12:00    10381112.ODR          
                 8585i    DSS25    2001/038T13:09:00    10381309.ODR          
                 8586i    DSS25    2001/038T15:07:00    10381507.ODR          
                 8587i    DSS25    2001/038T17:05:00    10381705.ODR          
                                                                              
MORS_0603  Began omitting/removing the following keywords from label files    
            because of inconsistent use within the Project:                   
                              MISSION_PHASE_TYPE                              
                              MISSION_PHASE_NAME                              
                                                                              
MORS_0604  Because of a failed software upgrade the "chronological" ordering  
  thru      of data on MORS_0604 through MORS_0607 is somewhat out of whack.  
MORS_0607   ECH, MCH, and ODR data (and their derivatives ECT, MCT, and BRO)  
            were delayed because it was impossible to query for several days. 
            HEA files do not necessarily accompany ECH and MCH data.          
                                                                              
MORS_0605  Eleven occultations (ODR files) were lost on 2001/048 and 049      
            because of a subtle scripting error.  Details are in HEA1057A.TXT 
            in directory HEA of MORS_0604.