0 0 RESERVED
1 1 NO THINNING APPLIED (ALL NATIVE MODEL LEVELS ARE INCLUDED FROM BASE TO TOP OF PSEUDO-SOUNDING)
2 2 NATIVE MODEL LEVELS ARE PRESENT ONLY IF THEY ARE SIGNIFICANT LEVELS AS PER REGULATIONS B/C 25 FOR CONVENTIONAL TEMP SOUNDINGS
3 3 A PREDEFINED SUBSET OF NATIVE MODEL LEVELS IS PRESENT
4 4 NO NATIVE MODEL LEVELS ARE PRESENT.  ALL PROFILE LEVELS ARE INTERPOLATED TO A PREDEFINED SET OF PRESSURE COORDINATE LEVELS
7 7 MISSING VALUE
