6. Dissolved Oxygen . These values when given are in milliliters 

 per liter to two decimal places. Values of 10.00 or above rarely occur 

 and are coded as 9«99« 



7» Sound Velocity . Sound velocity is given in feet per second to 

 one decimal place, corrected for pressure at each depth. 



TABLE I. COMPASS DIRECTION CONVERSION TABLE FOR 

 WIND, SEA, and SWELL DIRECTIONS 



Code Direction 



00 Calm 



01 5* to Ik' 



02 15» to 2k' NNE 



03 - 25° to 3k' 



Ok 35° to kk' 



05 - — k5' to 5k' NE 



06 - - 55* to 6k' 



07 65° to Jk' ENE 



08 75» to &k' 



09 - — 85° to 9^* E 



10 95» to 10lf° 



11 _ _ ___ io5» to Hk' ESE 



12 U5* to 22k' 



13 — - 125 e to 13 1 ** 



Ik — 135« to Ikk' SE 



15 - 1^5* to 15^ 



16 155» to 16V SSE 



17 165° to rft* 



18 175° to lBk' 



19 — 185° to 19 1 *-* 



20 — - - 195* to 20l(.« SSW 



21 205° to 214* 



22 215° to 22k' 



23 - - - 225» to 23 1 *-* SW 



2k 235* to 2kk' 



25 2k5* to 254° WSW 



26 — 255° to 26k' 



27 - 265° to 2jk' V 



28 - — 275° to 28^« 



29 285° to 29U» WNW 



30 295° to 30^° 



31 - 305° to 31k' 



32 315° to 32k' m 



33 325* to 33^* 



3^ — 335* to 3kk' NNW 



35 3^5 # to 35k' 



36 — 355* to k' N 



99 _ _ Variable or unknown 



61 



