Ocean Model Levels

In the CFSR, the vertical depths in the ocean model are written as integers.
(Note: a restriction in grib1 standard.)  Using ncdump of netcdf files of GODAS, 
Yan Xue got the following vertical levels for GODAS. 

zt_k = 5, 15, 25, 35, 45, 55, 65, 75, 85, 95, 105, 115, 125, 135, 145, 155,
   165, 175, 185, 195, 205, 215, 225, 238.4779, 262.2945, 303.0287,
   366.7978, 459.091, 584.6193, 747.187, 949.5881, 1193.53, 1479.588,
   1807.187, 2174.619, 2579.091, 3016.798, 3483.029, 3972.294, 4478.478 ;