average HYCOM th3d mean: GDEM4.2         [23.3H] :   -22.492855      3.8575382
 sea surf. height  mean: 1993.00-2013.00 [19.1H] :    -1.8658205     1.2641667 
      depth_GLBb0.08_11:           min,max depth =     5.00000    7199.97998