10 0 NOMINAL - ALTITUDE AND EPHEMERIS DATA AVAILABLE
21 1 MISSING AT MOST A SMALL GAP OF ALTITUDE AND EPHEMERIS DATA
32 2 MISSING MORE THAN A SMALL GAP OF ALTITUDE AND EPHEMERIS DATA, BUT NO MORE THAN A GRANULE BOUNDARY
43 3 MISSING MORE THAN A GRANULE BOUNDARY OF ALTITUDE AND EPHEMERIS DATA
515 15 MISSING VALUE
6