# Code table 3.15 - Physical meaning of vertical coordinate
20 20 Temperature (K)
100 100 Pressure (Pa)
101 101 Pressure deviation from mean sea level (Pa)
102 102 Altitude above mean sea level (m)
103 103 Height above ground (m)
104 104 Sigma coordinate
105 105 Hybrid coordinate
106 106 Depth below land surface (m)
107 pt Potential temperature (theta) (K)
108 108 Pressure deviation from ground to level (Pa)
109 pv Potential vorticity (K m-2 kg-1 s-1)
110 110 Geometrical height (m)
111 111 Eta coordinate
112 112 Geopotential height (gpm)
113 113 Logarithmic hybrid coordinate
160 160 Depth below sea level (m)
255 255 Missing
