CSC2SD - convert from Cartesian to lat/lon coordinates

       To use CSC2SD, load the NCAR Graphics library ngmath.

       Copyright (C) 2000
       University Corporation for Atmospheric Research

       The use of this Software is governed by a License Agreement.

UNIX                                                May 2000                                      CSC2SD(3NCARG)

       N           (integer, input) The number of coordinates to convert.

       X,Y,Z       (double precision, input) The Cartesian coordinates of the input points.

       RLAT        (double precision, output) The latitudes of the output coordinates, in degrees.

       RLON        (double precision, output) The longitudes of the output coordinates, in degrees.

       CSC2SD - convert from  Cartesian to  lat/lon coordinates

       css_overview, cssgrid, css2cd, csc2s.

       Complete documentation for Cssgrid is available at URL
       http://ngwww.ucar.edu/ngdoc/ng/ngmath/cssgrid/csshome.html

       CALL CSC2SD (N, X, Y, Z, RLAT, RLON)

       CSC2SD is called to find equivalent latitude and longitude coordinates to specified Cartesian coordinates
       on  the  unit  sphere.  The coordinate (1.,0.,0.) is mapped to the latitude/longitude coordinate (0.,0.).
       The latitude/longitude coordinates are returned in degrees.  CSC2SD is  a  double  precision  version  of
       CSC2S.