PDS_VERSION_ID              = PDS3

RECORD_TYPE                 = FIXED_LENGTH
RECORD_BYTES                = 68
FILE_RECORDS                = 7

DATA_SET_ID                 = "MESS-E/V/H-MASCS-3-UVVS-CDR-CALDATA-V1.0"
INSTRUMENT_HOST_NAME        = "MESSENGER"
INSTRUMENT_NAME             = "
  MERCURY ATMOSPHERIC AND SURFACE COMPOSITION SPECTROMETER"

START_TIME                  = 2004-08-27T22:06:46
STOP_TIME                   = 2015-04-30T15:03:45
PRODUCT_CREATION_TIME       = 2017-04-07

^TABLE                      = "UVVS_GRATING_OFFSET.TAB"


OBJECT                      = TABLE
  ROWS                      = 7
  ROW_BYTES                 = 68
  INTERCHANGE_FORMAT        = ASCII
  COLUMNS                   = 3
  DESCRIPTION               = "UVVS_GRATING_OFFSET.TAB is a time tag table 
  of UVVS grating offsets. A grating offset correction was implemented for 
  PDS Release 16. This table is a record of the time periods relevant to and 
  the magnitudes (in grating steps) of the offsets."

  /*** COLUMN object definitions ***/

  OBJECT                    = COLUMN
    NAME                    = "START_TIME"
    COLUMN_NUMBER           = 1
    DESCRIPTION             = "MET start time in seconds. 1/ for METs prior 
                               to clock reset. 2/ for after reset."
    DATA_TYPE               = UNSIGNED_INTEGER
    START_BYTE              = 1
    BYTES                   = 12
  END_OBJECT                = COLUMN

  OBJECT                    = COLUMN
    NAME                    = "GRATING_OFFSET"
    COLUMN_NUMBER           = 2
    DESCRIPTION             = "UVVS grating offset."
    DATA_TYPE               = ASCII_INTEGER
    START_BYTE              = 15
    BYTES                   = 10
  END_OBJECT                = COLUMN

  OBJECT                    = COLUMN
    NAME                    = "EVENT_NOTATION"
    COLUMN_NUMBER           = 3
    DESCRIPTION             = "Short description of event in which grating 
                               offset changes."
    DATA_TYPE               = CHARACTER
    START_BYTE              = 27     
    BYTES                   = 40
  END_OBJECT                = COLUMN

END_OBJECT                  = TABLE

END