# Code table 3.15 - Physical meaning of vertical coordinate
# 0-19 Reserved 
20 20 Temperature (K)
# 21-99 Reserved 
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 
# 114-159 Reserved 
160 160 Depth below sea level (m)
# 161-191 Reserved 
# 192-254 Reserved for local use 
255 255 Missing