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.

 FIRST NUMBER: OCL CODE
 SECOND NUMBER: NODC CODE
 THIRD NUMBER: CODE DESCRIPTION
                           
     40   0615    REFERENCE TYPE
     --   ----   --------------------
      1        -- BUCKET
      2        -- INJECTION, OR UNVERIFIED BUCKET NOTATION, OR UNKNOWN
      3        -- NANSEN CAST (REVERSING THERMOMETER)
      4        -- THERMOGRAPH
      5        -- SPECIAL CALIBRATION THERMOMETER OR EQUIPMENT
      6        -- BT
      7        -- STD
      9        -- HULL CONTACT SENSOR
     10        -- ENGINE INTAKE