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