PDS_VERSION_ID = PDS3                                                         
                                                                              
RECORD_TYPE  = FIXED_LENGTH                                                   
RECORD_BYTES = 36                                                             
FILE_RECORDS = 16                                                             
                                                                              
^TABLE       = "OPECAL.TAB"                                                   
                                                                              
DATA_SET_ID           = "GIO-C-OPE-3-RDR-GRIGG-SKJELL-V1.0"                   
PRODUCT_ID            = "OPE-OPECAL-199512"                                   
PRODUCT_NAME = "Giotto Extended Mission OPE, Calibration Values Table"        
PRODUCT_CREATION_TIME = 1995-08-18                                            
                                                                              
TARGET_NAME          = "26P/GRIGG-SKJELLERUP 1 (1922 K1)"                     
INSTRUMENT_HOST_NAME = "GIOTTO"                                               
INSTRUMENT_NAME      = "OPTICAL PROBE EXPERIMENT"                             
START_TIME           = "N/A"                                                  
STOP_TIME            = "N/A"                                                  
SPACECRAFT_CLOCK_START_COUNT = "N/A"                                          
SPACECRAFT_CLOCK_STOP_COUNT  = "N/A"                                          
                                                                              
DESCRIPTION  = "This file contains the data used to determine the scattered   
                light in the blue and green continuum channels (P1 and P3,    
                respectively) of the OPE experiment."                         
                                                                              
RECORD_FORMAT = "A1,1X,I1,1X,5(1X,F5.1)"                                      
                                                                              
OBJECT        = TABLE                                                         
  NAME        = "CALIBRATION VALUES"                                          
                                                                              
  INTERCHANGE_FORMAT = ASCII                                                  
  COLUMNS     =   7                                                           
  ROW_BYTES   =  36                                                           
  ROWS        =  16                                                           
  DESCRIPTION = "This table lists average counts in each of the eight         
                 clock sectors at 4 large distances from the nucleus,         
                 at which there should not be any light from the coma,        
                 with a final overall average."                               
                                                                              
  OBJECT        = COLUMN                                                      
    NAME        = CHANNEL                                                     
    BYTES       = 1                                                           
    DATA_TYPE   = CHARACTER                                                   
    START_BYTE  = 1                                                           
    FORMAT      = "A1"                                                        
    DESCRIPTION = "'B' for the blue (442 nm) continuum channel (P1);          
                   'G' for the green (577 nm) continuum channel (P3)"         
  END_OBJECT                                                                  
                                                                              
  OBJECT        = COLUMN                                                      
    NAME        = "CLOCK SECTOR"                                              
    BYTES       = 1                                                           
    DATA_TYPE   = ASCII_INTEGER                                               
    START_BYTE  = 3                                                           
    FORMAT      = "I1"                                                        
    MINIMUM     = 0                                                           
    MAXIMUM     = 7                                                           
    DESCRIPTION = "A number (0-7) indicating from which of the 8              
                   clock-sectors the following counts were derived."          
  END_OBJECT                                                                  
                                                                              
  OBJECT        = COLUMN                                                      
    NAME        = "AVERAGE COUNTS, -540,000 KM"                               
    BYTES       = 5                                                           
    DATA_TYPE   = ASCII_REAL                                                  
    START_BYTE  = 6                                                           
    FORMAT      = "F5.1"                                                      
    UNIT        = "COUNTS"                                                    
    DESCRIPTION = "Actual counts in this sector, averaged over many           
                   spacecraft rotations, at a distance of -540,000km          
                   (prior to encounter) from the nucleus."                    
  END_OBJECT                                                                  
                                                                              
  OBJECT        = COLUMN                                                      
    NAME        = "AVERAGE COUNTS, -240,000 KM"                               
    BYTES       = 5                                                           
    DATA_TYPE   = ASCII_REAL                                                  
    START_BYTE  = 12                                                          
    FORMAT      = "F5.1"                                                      
    UNIT        = "COUNTS"                                                    
    DESCRIPTION = "Actual counts in this sector, averaged over many           
                   spacecraft rotations, at a distance of -240,000km          
                   (prior to encounter) from the nucleus."                    
  END_OBJECT                                                                  
                                                                              
  OBJECT        = COLUMN                                                      
    NAME        = "AVERAGE COUNTS, -90,000 KM"                                
    BYTES       = 5                                                           
    DATA_TYPE   = ASCII_REAL                                                  
    START_BYTE  = 18                                                          
    FORMAT      = "F5.1"                                                      
    UNIT        = "COUNTS"                                                    
    DESCRIPTION = "Actual counts in this sector, averaged over many           
                   spacecraft rotations, at a distance of -90,000km           
                   (prior to encouter) from the nucleus."                     
  END_OBJECT                                                                  
                                                                              
  OBJECT        = COLUMN                                                      
    NAME        = "AVERAGE COUNTS, +550,000 KM"                               
    BYTES       = 5                                                           
    DATA_TYPE   = ASCII_REAL                                                  
    START_BYTE  = 24                                                          
    FORMAT      = "F5.1"                                                      
    UNIT        = "COUNTS"                                                    
    DESCRIPTION = "Actual counts in this sector, averaged over many           
                   spacecraft rotations, at a distance of +550,000km          
                   (after encounter) from the nucleus."                       
  END_OBJECT                                                                  
                                                                              
  OBJECT        = COLUMN                                                      
    NAME        = "AVERAGE COUNTS, OVERALL"                                   
    BYTES       =  5                                                          
    DATA_TYPE   = ASCII_REAL                                                  
    START_BYTE  = 30                                                          
    FORMAT      = "F5.1"                                                      
    UNIT        = "COUNTS"                                                    
    DESCRIPTION = "This column is the average of the preceding four columns,  
                   i.e. the counts in the sector averaged over the four       
                   distances from the nucleus."                               
  END_OBJECT                                                                  
                                                                              
END_OBJECT    = TABLE                                                         
                                                                              
END