11 1 MODEL GROUND SURFACE
22 2 STANDARD LEVEL
33 3 TROPOPAUSE LEVEL
44 4 MAXIMUM WIND LEVEL
55 5 SIGNIFICANT TEMPERATURE LEVEL
66 6 SIGNIFICANT HUMIDITY LEVEL
77 7 SIGNIFICANT WIND LEVEL
88 8 VERTICALLY INTERPOLATED LEVEL (THIS SHOULD BE SET TO 1 FOR POINTS ON THE VERTICAL PROFILE THAT FALL BETWEEN THE MODEL'S NATIVE VERTICAL LEVELS.)
99 9 VIRTUAL STATION HEIGHT
10