NAME:n256gaussian PURPOSE:compute the latitudes of the n256 gaussian grid. See: http://www.ecmwf.int/products/data/technical/gaussian/n256FIS.html CATEGORY:grid CALLING SEQUENCE:lat=n256gaussian() INPUTS:None KEYWORD PARAMETERS:None OUTPUTS:a 1d array COMMON BLOCKS:None SIDE EFFECTS:None RESTRICTIONS:None EXAMPLE: MODIFICATION HISTORY: