PDS_VERSION_ID               = PDS3                                           
                                                                              
RECORD_TYPE                  = "FIXED_LENGTH"                                 
RECORD_BYTES                 = 416                                            
FILE_RECORDS                 = 1500                                           
                                                                              
^TABLE                       = "HISENR.TAB"                                   
                                                                              
DATA_SET_ID                  = "GIO-C-IMS-3-RDR-HIS-GRIGG-SKJELL-V1.0"        
PRODUCT_ID                   = "IMS-HISENR-199512"                            
PRODUCT_NAME               = "GIOTTO EXTENDED MISSION IMS ENERGY BAND RESULTS"
PRODUCT_CREATION_TIME        = 1995-12-31                                     
                                                                              
TARGET_NAME                  = "26P/GRIGG-SKJELLERUP 1 (1922 K1)"             
INSTRUMENT_HOST_NAME         = "GIOTTO"                                       
INSTRUMENT_NAME              = "ION MASS SPECTROMETER"                        
START_TIME                   = 1992-07-10T14:30:50.0                          
STOP_TIME                    = 1992-07-10T16:13:24.5                          
                                                                              
SPACECRAFT_CLOCK_START_COUNT = "UNK"                                          
SPACECRAFT_CLOCK_STOP_COUNT  = "UNK"                                          
                                                                              
DESCRIPTION              = "This file contains results from the High Intensity
  Spectrometer (HIS) instrument flown aboard the Giotto                       
  spacecraft during its extended mission to comet                             
  P/Grigg-Skjellerup.  These counts are binned by energy                      
  level."                                                                     
                                                                              
RECORD_FORMAT                = "I3,2(1X,F7.1),1X,E9.3,128(I3)"                
                                                                              
OBJECT     = TABLE                                                            
  NAME               = "ENERGY_BINS"                                          
                                                                              
  NOTE               = "The timing data for record 1363 was corrupted at some 
    during production.  The record has been left in the same                  
    state in which it was received."                                          
                                                                              
  INTERCHANGE_FORMAT = "ASCII"                                                
  COLUMNS            = 5                                                      
  ROW_BYTES          = 416                                                    
  ROWS               = 1500                                                   
  DESCRIPTION     = "This table lists counts recorded during the time interval
    in each of 128 energy-elevation bins.  There are 64 energy                
    values, each of which has data recorded at 2 elevations.                  
    For the correspondence between bin number and energy-                     
    elevation, see the accompanying file HISENRBN.TAB."                       
                                                                              
  OBJECT     = COLUMN                                                         
    NAME             = "DAY"                                                  
    BYTES            = 3                                                      
    DATA_TYPE        = "ASCII_INTEGER"                                        
    START_BYTE       = 1                                                      
    FORMAT           = "I3"                                                   
    UNIT             = "DAYS"                                                 
    INVALID_CONSTANT = -99                                                    
    DESCRIPTION      = "Day number.  This is always equal to 192 (10 July) in 
      this file."                                                             
    NOTE     = "The only INVALID_CONSTANT value in this field occurs in record
      1363."                                                                  
  END_OBJECT = COLUMN                                                         
                                                                              
  OBJECT     = COLUMN                                                         
    NAME             = "START_TIME"                                           
    BYTES            = 7                                                      
    DATA_TYPE        = "ASCII_REAL"                                           
    START_BYTE       = 5                                                      
    FORMAT           = "F7.1"                                                 
    UNIT             = "SECONDS"                                              
    INVALID_CONSTANT = -5.3                                                   
    DESCRIPTION  = "The number of UT seconds from midnight to the start of the
      observation.  This refers to spacecraft event time (SCET)."             
    NOTE     = "The only INVALID_CONSTANT value in this field occurs in record
      1363."                                                                  
  END_OBJECT = COLUMN                                                         
                                                                              
  OBJECT     = COLUMN                                                         
    NAME             = "STOP_TIME"                                            
    BYTES            = 7                                                      
    DATA_TYPE        = "ASCII_REAL"                                           
    START_BYTE       = 13                                                     
    FORMAT           = "F7.1"                                                 
    UNIT             = "SECONDS"                                              
    INVALID_CONSTANT = -1.3                                                   
    DESCRIPTION      = "The number of seconds from midnight to the end of the 
      observation.  This refers to spacecraft event time (SCET)."             
    NOTE     = "The only INVALID_CONSTANT value in this field occurs in record
      1363."                                                                  
  END_OBJECT = COLUMN                                                         
                                                                              
  OBJECT     = COLUMN                                                         
    NAME        = "DISTANCE"                                                  
    BYTES       = 9                                                           
    DATA_TYPE   = "ASCII_REAL"                                                
    START_BYTE  = 21                                                          
    FORMAT      = "E9.3"                                                      
    UNIT        = "KILOMETERS"                                                
    DESCRIPTION = "Distance to the comet nucleus.  This is expressed as a     
      negative number for observations in which the spacecraft                
      was still approaching the comet."                                       
    NOTE        = "The value in record 1363 is likely invalid."               
  END_OBJECT = COLUMN                                                         
                                                                              
  OBJECT     = COLUMN                                                         
    NAME             = "COUNTS"                                               
    BYTES            = 384                                                    
    DATA_TYPE        = "ASCII_INTEGER"                                        
    START_BYTE       = 30                                                     
    ITEMS            = 128                                                    
    ITEM_BYTES       = 3                                                      
    FORMAT           = "I3"                                                   
    UNIT             = "COUNT/SPIN"                                           
    INVALID_CONSTANT = -99                                                    
    DESCRIPTION      = "This array gives the counts in each energy-elevation  
      band during the given interval.  There are6432 energy                   
      levels, ranging from 306.25eV to 1445.50 eV, and two                    
      elevation bands: 0-5 and 5-22.5 degrees.  For a                         
      complete list of the bin/energy-elevation values, see                   
      the accompanying 'HISENRBN.TAB' file."                                  
  END_OBJECT = COLUMN                                                         
                                                                              
END_OBJECT = TABLE                                                            
                                                                              
END