;,
                    xlon   * <a href="dpr_c.html">dpr_c</a>(),
                    xlat   * <a href="dpr_c.html">dpr_c</a>(),
                    phase  * <a href="dpr_c.html">dpr_c</a>(),
                    solar  * <a href="dpr_c.html">dpr_c</a>(),
                    (long) lit,
                    emissn * <a href="dpr_c.html">dpr_c</a>(),
                    (long) visible,
                    <a href="vnorm_c.html">vnorm_c</a>( srfvec )     );

                    /.
                    Compute th