CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL /* FILE FORMAT AND LENGTH */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 300 FILE_RECORDS = 275 LABEL_RECORDS = 7 /* POINTERS TO START RECORDS OF MAJOR OBJECT IN FILE */ ^IMAGE_HISTOGRAM = 8 ^IMAGE = 12 /* IMAGE DESCRIPTION */ DATA_SET_ID = 'VO1/VO2-M-VIS-2-EDR-BR-V2.0' SPACECRAFT_NAME = VIKING_ORBITER_2 MISSION_PHASE_NAME = EXTENDED_MISSION TARGET_NAME = MARS IMAGE_ID = '269B17' IMAGE_NUMBER = 52012766 IMAGE_TIME = 1977-05-21T05:45:56Z EARTH_RECEIVED_TIME = 1977-05-21T10:32:01Z ORBIT_NUMBER = 269 INSTRUMENT_NAME = VISUAL_IMAGING_SUBSYSTEM_CAMERA_A GAIN_MODE_ID = HIGH FLOOD_MODE_ID = ON OFFSET_MODE_ID = ON FILTER_NAME = VIOLET EXPOSURE_DURATION = 0.067880 NOTE = "NORTHERN HEMISPHERE MONITORING" /* DESCRIPTION OF THE OBJECTS CONTAINED IN FILE */ OBJECT = IMAGE_HISTOGRAM ITEMS = 256 ITEM_TYPE = VAX_INTEGER ITEM_BITS = 32 END_OBJECT OBJECT = IMAGE LINES = 264 LINE_SAMPLES = 300 SAMPLE_TYPE = UNSIGNED_INTEGER SAMPLE_BITS = 8 SAMPLE_BIT_MASK = 2#11111110# NOTE = "MEDIAN SUBSAMPLED 1056X1204 EDR IMAGE" END_OBJECT END 6. a. 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