0602JD CTD Notes for Processing

No sensor changes yet (14 Feb 2006) but pr was changed prior to cast 45.
Offset was changed from 4.5xxx to 3.3xxx, -0.8 because deck pressure was
approaching the 1.0db mark (~0.93).  Post change deck pressures have been
around -0.1.  

Pre-cast 49, the pressure offset was changed once more. 
Adding 0.1 back since the deck pressure was ~-0.2.  JRW
