10 0 RESERVED 21 1 NO THINNING APPLIED (ALL NATIVE MODEL LEVELS ARE INCLUDED FR" OM BASE TO TOP OF PSEUDO-SOUNDING). 32 2 NATIVE MODEL LEVELS ARE PRESENT ONLY IF THEY ARE SIGNIFICANT" LEVELS AS PER REGULATIONS B/C 25 FOR CONVENTIONAL TEMP SOUN" DINGS 43 3 A PREDEFINED SUBSET OF NATIVE MODEL LEVELS IS PRESENT 54 4 NO NATIVE MODEL LEVELS ARE PRESENT. ALL PROFILE LEVELS ARE" INTERPOLATED TO A PREDEFINED SET OF PRESSURE COORDINATE LEVE" LS 67 7 MISSING VALUE 7