// Vertical coordinate types (vertco_type@body) :

SET $pressure = 1;            // vertco_reference_1@body is a pressure (in Pa)
SET $gpheight = 2;            // vertco_reference_1@body is a geopotential height
SET $tovs_cha = 3;            // vertco_reference_1@body is a TOVS channel
SET $scat_cha = 4;            // vertco_reference_1@body is a Scatterometer channel
SET $modlevno = 5;            // vertco_reference_1@body is a model level number
SET $imp_param = 6;           // vertco_reference_1@body is an impact parameter
SET $cha_number = 7;          // vertco_reference_1@body is a channel number
SET $cha_wavelength = 8;      // vertco_reference_1@body is channel wavelength (in metres)
SET $cha_frequency = 9;       // vertco_reference_1@body is channel frequency (in Hz)
SET $ocean_depth = 10;        // vertco_reference_1@body is depth below surface (in metres)
SET $derived_pressure = 11;   // vertco_reference_1@body is a derived pressure (in Pa)
SET $amb_wind_num = 12;       // vertco_reference_1@body is an ambivalent wind number
SET $cloud_top_pressure = 13; // vertco_reference_1@body is a cloud top pressure (in Pa)
SET $tangent_height = 14;     // vertco_reference_1@body is a tangent height (metres) for SBUV
SET $model_pressure = 15;     // vertco_reference_1@body is a model level pressure (in Pa)
