Pressure and temperature are obtained directly from
    the SEACAT.  Salinity is derived using Sea_Bird's
    software SBEDataProcessing.  All 3 variables have
    been averaged into depth bins and then fitted to
    1-decibar intervals by means of parabolic fitting.
    The "QUALTY (Quality)" data parameter value of "-3"  
    indicates this parabolic fitting.
    The CTD instrument is Sea-Bird Electronics, Inc.
    Model 9 or 9 Plus.   The pressure is reported in
    millibars, the temperature in degrees Celsius, 
    and the salinity in parts-per-thousand, Practical
    Salinity Units.