OCL/NODC CODES USED IN THE WORLD OCEAN DATABASE 1998.

 OCL CODES ARE THE SAME AS THOSE USED BY NODC EXCEPT WHERE AN NODC
 CODE IS A CHARACTER VALUE IN WHICH CASE OCL ASSIGNS A NUMERIC 
 EQUIVALENT. THE NODC CODE IS IN PARENTHESIS IF DIFFERENT FROM THE
 OCL CODE. THE DEFAULT CAST DIRECTION IS A DOWNCAST.

 FIRST NUMBER: OCL CODE
 SECOND NUMBER: NODC CODE
 THIRD NUMBER: CODE DESCRIPTION

     11 0508   CAST DIRECTION
     -- ----   --------------------
      1 (U)  -- UPCAST
      2 (A)  -- AVERAGE OF UP AND DOWN CASTS