PDS_VERSION_ID                = PDS3                                          
/* label standards identifiers PDS Version 3.8 */                             
                                                                              
/* File Characteristics */                                                    
RECORD_TYPE                   = FIXED_LENGTH                                  
RECORD_BYTES                  = 62                                            
FILE_RECORDS                  = 16200                                         
MD5_CHECKSUM                  = "24de1ae0497c9cf24a62c99c70e5bc60"            
                                                                              
/* Pointers to Data Objects */                                                
^TABLE                        = "GRD_HYDROGEN_MAP.TAB"                        
PRODUCER_FULL_NAME            = "T. H. Prettyman"                             
PRODUCER_INSTITUTION_NAME     = "PLANETARY SCIENCE INSTITUTE"                 
                                                                              
/* Identification Data Elements */                                            
MISSION_NAME                  = "DAWN MISSION TO VESTA AND CERES"             
MISSION_ID                    = "DAWN"                                        
MISSION_PHASE_NAME            = "VESTA SCIENCE LAMO (VSL)"                    
TARGET_NAME                   = "4 VESTA"                                     
TARGET_TYPE                   = "ASTEROID"                                    
INSTRUMENT_HOST_NAME          = "DAWN"                                        
INSTRUMENT_HOST_ID            = "DAWN"                                        
INSTRUMENT_ID                 = "GRAND"                                       
INSTRUMENT_NAME               = "GAMMA-RAY AND NEUTRON DETECTOR"              
DATA_SET_ID                   = "DAWN-A-GRAND-5-VESTA-HYDROGEN-MAP-V1.0"      
DATA_SET_NAME = "DAWN GRAND MAP VESTA HYDROGEN ABUNDANCE V1.0"                
PRODUCT_ID                    = "GRD_HYDROGEN_MAP"                            
PRODUCT_TYPE                  = "DATA"                                        
PRODUCT_VERSION_ID            = "1.0"                                         
START_TIME                    = 2011-12-08T01:18:52                           
STOP_TIME                     = 2012-01-14T00:19:52                           
SPACECRAFT_CLOCK_START_COUNT  = "0376579234.000"                              
SPACECRAFT_CLOCK_STOP_COUNT   = "0379772494.000"                              
PRODUCT_CREATION_TIME         = 2013-07-31T23:10:52                           
                                                                              
/* Data Object Definitions */                                                 
OBJECT                        = TABLE                                         
 ROWS                         = 16200                                         
 ROW_BYTES                    = 62                                            
 COLUMNS                      = 8                                             
 INTERCHANGE_FORMAT           = ASCII                                         
 DESCRIPTION                  ="A global map of the abundance of 
    hydrogen in micrograms/g within the regolith of asteroid 
    4 Vesta is provided for two-degree equal-angle pixels.  Hydrogen 
    abundances were determined from epithermal neutron counting data 
    acquired by the NASA Dawn mission's Gamma Ray and Neutron Detector 
    (GRaND) while in low altitude mapping orbit, about 210 km from Vesta's 
    surface.  The abundances are representative of Vesta's bulk regolith 
    composition to depths of a few 10s of decimeters with a spatial 
    resolution of about 300-km full-width-at-half-maximum of arc length on
    the surface.  The methods used to determine hydrogen abunance are
    described by PRETTYMANETAL2012."                                       
                                                                              
 OBJECT                       = COLUMN                                        
  NAME                        = "PIXEL_INDEX"                                 
  DATA_TYPE                   = ASCII_INTEGER                                 
  START_BYTE                  = 1                                             
  BYTES                       = 10                                            
  FORMAT                      = "I10"                                         
  DESCRIPTION                 = "                                             
    Pixel index. The map covers -90 to 90 degrees latitude and -180 to 180    
    degrees east longitude in the Claudia Double Prime coordinate system.     
    Pixels are indexed from west to east and from south to north, starting    
    with 0.                                                                   
   "                                                                          
 END_OBJECT                   = COLUMN                                        
                                                                              
 OBJECT                       = COLUMN                                        
  NAME                        = "MIN_LAT"                                     
  DATA_TYPE                   = ASCII_REAL                                    
  UNIT                        = "deg"                                         
  START_BYTE                  = 11                                            
  BYTES                       = 7                                             
  FORMAT                      = "F7.1"                                        
  DESCRIPTION                 = "                                             
    Pixel latitude southernmost boundary.                                     
   "                                                                          
 END_OBJECT                   = COLUMN                                        
                                                                              
 OBJECT                       = COLUMN                                        
  NAME                        = "MAX_LAT"                                     
  DATA_TYPE                   = ASCII_REAL                                    
  UNIT                        = "deg"                                         
  START_BYTE                  = 18                                            
  BYTES                       = 7                                             
  FORMAT                      = "F7.1"                                        
  DESCRIPTION                 = "                                             
    Pixel latitude northernmost boundary.                                     
   "                                                                          
 END_OBJECT                   = COLUMN                                        
                                                                              
 OBJECT                       = COLUMN                                        
  NAME                        = "DELTA_LAT"                                   
  DATA_TYPE                   = ASCII_REAL                                    
  UNIT                        = "deg"                                         
  START_BYTE                  = 25                                            
  BYTES                       = 7                                             
  FORMAT                      = "F7.1"                                        
  DESCRIPTION                 = "                                             
    Width of the pixel in latitude.                                           
   "                                                                          
 END_OBJECT                   = COLUMN                                        
                                                                              
 OBJECT                       = COLUMN                                        
  NAME                        = "MIN_LON"                                     
  DATA_TYPE                   = ASCII_REAL                                    
  UNIT                        = "deg"                                         
  START_BYTE                  = 32                                            
  BYTES                       = 7                                             
  FORMAT                      = "F7.1"                                        
  DESCRIPTION                 = "                                             
    Pixel east longitude westernmost boundary.                                
   "                                                                          
 END_OBJECT                   = COLUMN                                        
                                                                              
 OBJECT                       = COLUMN                                        
  NAME                        = "MAX_LON"                                     
  DATA_TYPE                   = ASCII_REAL                                    
  UNIT                        = "deg"                                         
  START_BYTE                  = 39                                            
  BYTES                       = 7                                             
  FORMAT                      = "F7.1"                                        
  DESCRIPTION                 = "                                             
    Pixel east longitude easternmost boundary.                                
   "                                                                          
 END_OBJECT                   = COLUMN                                        
                                                                              
 OBJECT                       = COLUMN                                        
  NAME                        = "DELTA_LON"                                   
  DATA_TYPE                   = ASCII_REAL                                    
  UNIT                        = "deg"                                         
  START_BYTE                  = 46                                            
  BYTES                       = 7                                             
  FORMAT                      = "F7.1"                                        
  DESCRIPTION                 = "                                             
    Width of the pixel in longitude.                                          
   "                                                                          
 END_OBJECT                   = COLUMN                                        
                                                                              
 OBJECT                       = COLUMN                                        
  NAME                        = "HYDROGEN_ABUNDANCE"                          
  DATA_TYPE                   = ASCII_REAL                                    
  UNIT                        = "micrograms/gram"                             
  START_BYTE                  = 53                                            
  BYTES                       = 8                                             
  FORMAT                      = "F8.1"                                        
  DESCRIPTION                 = "                                             
    Hydrogen abundance.                                                       
   "                                                                          
 END_OBJECT                   = COLUMN                                        
                                                                              
END_OBJECT                    = TABLE                                         
END