e fields:</span>
0028 <span class="comment">%                   - hycom.lon, hycom.lat - rectangular arrays.</span>
0029 <span class="comment">%                   - hycom.Depth - HYCOM depth levels.</span>
0030 <span class="comment">%                 The data fields (specified in varlist) must be shaped</span>
0031 <span class="comment">%                 (x, y, z, time).</span>
0032 <span class="comment">%   start_date  = Gregorian start date array (YYYY, MM, DD, hh, mm, ss).</span>
0033 <span class="commen