OBJECT = COLUMN NAME = ORBIT_QUALITY_FLAG DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 537 BYTES = 2 DESCRIPTION = "Flag indicating origin of orbit. A 0 indicates that JPL is the producer; a 1 or higher indicates that the MOLA Science Investigation Team is the producer, using the potential model GMM-1 or higher." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ATTITUDE_FLAG DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 539 BYTES = 2 DESCRIPTION = "Flag indicating spacecraft attitude data was not available for all (3) or part (2) of a MOLA frame, in which case ground location is calculated assuming nadir-pointing geometry." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FRAME_LOCAL_TIME DATA_TYPE = MSB_INTEGER START_BYTE = 541 BYTES = 2 UNIT = 'RADIANS * (10**4)' DESCRIPTION = "The longitude of the frame midpoint location on Mars minus the subsolar longitude, in the range from -Pi to Pi." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PHASE_ANGLE DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 543 BYTES = 2 UNIT = 'RADIANS * (10**4)' DESCRIPTION = "The angle between the vectors from Mars to Mars Global Surveyor and from Mars to the Sun at the frame mid-point location." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SOLAR_INCIDENCE_ANGLE DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 545 BYTES = 2 UNIT = 'RADIANS * (10**4)' DESCRIPTION = "The angle between the Mars surface normal vector and the Sun vector at the frame mid-point location." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EMISSION_ANGLE DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 547 BYTES = 2 UNIT = 'RADIANS * (10**4)' DESCRIPTION = "The angle between the Mars surface normal vector and the Mars Global Surveyor vector at the frame mid-point location." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ATMOS_OPACITY DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 549 BYTES = 4 DESCRIPTION = "The Mars atmospheric opacity Tau; may be retrieved from TES data. Nominally 0.5. Stored as a pure number * 10**6. To calculate surface reflectivity, the reflectivity-transmission product should be divided by exp(2*Tau)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DP_FRAME_TIME DATA_TYPE = IEEE_REAL START_BYTE = 553 BYTES = 8 UNIT = 'SECONDS' DESCRIPTION = "The IEEE standard 754-1985 double precision frame mid-point time in elapsed time from J2000, in seconds." END_OBJECT = COLUMN OBJECT = COLUMN NAME = RECV_PULSE_ENERGY_COUNTS DATA_TYPE = UNSIGNED_INTEGER START_BYTE = 561 BYTES = 20 ITEMS = 20 ITEM_BYTES = 1 UNIT = 'COUNTS' DESCRIPTION = "The raw pulse energy reading for the trigger channel; in the range 0-255. (An array of 20 values per frame.)" END_OBJECT = COLUMN OBJECT = COLUMN NAME = RECV_PULSE_WIDTH_COUNTS DATA_TYPE = UNSIGNED_INTEGER START_BYTE = 581 BYTES = 20 ITEMS = 20 ITEM_BYTES = 1 UNIT = 'COUNTS' DESCRIPTION = "The raw pulse width reading for the trigger channel; in the range 0-63. (An array of 20 values per frame.)" END_OBJECT = COLUMN OBJECT = COLUMN NAME = DELTA_SC_LATITUDE DATA_TYPE = MSB_INTEGER START_BYTE = 601 BYTES = 4 UNIT = 'DEGREES*(10**6)' DESCRIPTION = "The average change in spacecraft areocentric latitude associated with each 20-shot MOLA frame." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DELTA_SC_LONGITUDE DATA_TYPE = MSB_INTEGER START_BYTE = 605 BYTES = 4 UNIT = 'DEGREES*(10**6)' DESCRIPTION = "The average change in spacecraft areocentric longitude associated with each 20-shot MOLA frame." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DELTA_SC_RADIUS DATA_TYPE = MSB_INTEGER START_BYTE = 609 BYTES = 4 UNIT = 'CENTIMETERS' DESCRIPTION = "The average change in spacecraft radial distance associated with each 20-shot MOLA frame." END_OBJECT = COLUMN OBJECT = COLUMN NAME = AREOID_RADIUS DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 613 BYTES = 4 UNIT = 'CENTIMETERS' DESCRIPTION = "The radius of the reference areoid at frame midpoint, with a 3396 kilometer mean radius at the equator. Initially, the Goddard Mars Model 1 (GMM1) of Smith et al., 1993, with the coordinate system of IAU1991, is used." END_OBJECT = COLUMN OBJECT = COLUMN NAME = OFF_NADIR_ANGLE DATA_TYPE = MSB_INTEGER START_BYTE = 617 BYTES = 4 UNIT = 'DEGREES * (10**6)' DESCRIPTION = "Angle between the transmitted laser shot direction and areocentric direction, at spacecraft frame mid-point." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ENCODER_BITS DATA_TYPE = UNSIGNED_INTEGER START_BYTE = 621 BYTES = 20 ITEMS = 20 ITEM_BYTES = 1 DESCRIPTION = "The start encoder bits (0-3) plus 16*stop encoder bits (0-3) for each MOLA shot. These bits interpolate the time of the start and stop detectors to improve shot range precision." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DELTA_AREOID DATA_TYPE = MSB_INTEGER START_BYTE = 641 BYTES = 4 UNIT = 'CENTIMETERS' DESCRIPTION = "The average change in reference areoid associated with each 20-shot MOLA frame." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MOLA_CLOCK_RATE DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 645 BYTES = 4 UNIT = 'HERTZ' DESCRIPTION = "The MOLA clock rate estimated from the fine time counter drift with respect to the spacecraft clock." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MOLA_RANGE DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 649 BYTES = 80 ITEMS = 20 ITEM_BYTES = 4 UNIT = 'CENTIMETERS' DESCRIPTION = "MOLA range value per shot; this value is corrected by the range_correction. Array of 20 four byte values." END_OBJECT = COLUMN OBJECT = COLUMN NAME = RANGE_CORRECTION DATA_TYPE = MSB_INTEGER START_BYTE = 729 BYTES = 40 ITEMS = 20 ITEM_BYTES = 2 UNIT = 'CENTIMETERS' DESCRIPTION = "Correction to the shot range values due to the detector response and range walk. Array of 20 two-byte values." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DELTA_LATITUDE DATA_TYPE = MSB_INTEGER START_BYTE = 769 BYTES = 4 UNIT = 'DEGREES *(10**6)' DESCRIPTION = "The average change in latitude associated with each 20-shot MOLA frame." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DELTA_LONGITUDE DATA_TYPE = MSB_INTEGER START_BYTE = 773 BYTES = 4 UNIT = 'DEGREES *(10**6)' DESCRIPTION = "The average change in longitude associated with each 20-shot MOLA frame." END_OBJECT = COLUMN