This describes the contents of the ctd data directories.

CON.TXT    : Description of the lines in a CON file.
INSTRMT.TXT: Make and model of optical instruments used.

There is a separate directory for each cruise (n1-n9).

Each directory contains;

*.CNV files: These files contain the quality-controlled
             CTD/optics data.

*ACTUAL.TXT: These files summarize the best and final
             location, time, and seafloor depth for each 
             CTD and XBT station on each cruise.

*.CON files: These contain the configuration files used
             to process the CTD data. Typically they are
             slope and offset values for each sensor used
             on the CTD. Sometimes different *.con files
             were used during a cruise. See *.list below.


*.LIST     : Sometimes the spare CTD/rosette package was
             used.  The spare package would have different
             sensors installed thus a different *.con file
             would have been used. This file lists which
             *.con file was used for each cast.

             Seabird Software was used for all CTD processing
             of data from binary to engineering units. The 
             The version of Seabird software used is also
             listed in the metadata of each individual file.
             However, the same software was used within a
             cruise and they are as follows. 

             N1: SOFTWARE VER:  Seabird 4.221
             N2: SOFTWARE VER:  Seabird 4.229
             N3: SOFTWARE VER:  Seabird 4.229
             N4: SOFTWARE VER:  Seabird 4.229
             N5: SOFTWARE VER:  Seasave Win32 v1.10
             N6: SOFTWARE VER:  Seasave Win32 v1.10
             N7: SOFTWARE VER:  Seasave Win32 v1.10
             N8: SOFTWARE VER:  Seasave Win32 v1.10
             N9: SOFTWARE VER:  Seasave Win32 v1.10

*.PDF      : An Adobe PDF file containing plots of the
             CTD/optics data versus depth. There are
             multiple pages in this file with one page
             per station. 
