NLCDT     Default number of Planetary Boundary Layer levels to copy for verti-
           cal interpolation to potential temperature surfaces (*VPOT) (one
           INTEGER value, default is NLCDT = 0).  This number is used for all
           fields not named in the exceptions list <TINTXL>.  Specifying a
           value for this ICP nullifies the default for <TINTXL>.  See <TINTXL>
           for examples.