CalCOFI 0110NH CTD Data Processing Notes

CalCOFI occupied 66 standard stations (pre-2004 SCCOOS additions). SIO is running
a Seabird 911 CTD with dual T & S, single Beckman/YSI oxygen sensor, two 
fluorometers: primary Seapoint & Wetlabs, Seatech transmissometer, Biospherical 
Remote PAR (no surface PAR).
Please note that there were two fluorometers deployed, on Voltage 0 and 6.
Voltage 6, the Seapoint, was used to generate estimated chlorophyll from fluorometer
voltages. The Wetlabs fluorometer voltages were also plotted but not used to
estimate chlorophyll.
 
The Beckman/YSI oxygen sensor underestimated surface oxygens on many
downcast files. Those data have been datacoded "8" in the CTD station csvs. 
Even after applying bottle-correction coefficients to correct the O2 sensor.
The CTD sensor is underestimating the surface oxygen. This was a common issue
with the Beckman/YSI oxygen sensor. Holding the CTD at surface longer would often
improve the data. But a strict station schedule did not allow holding the CTD at 
surface for 10 or more minutes to equilibrate.

Corrections -
Station headers: 
Cast 001 CalCOFI Line.Sta number was changed from 93.26.7 to 93.3 26.7
Cast 050: CalCOFI Line.Sta number was changed from 83.40.6 to 83.3 40.6

Missing Data:
Cast 029Downcast is missing all data from 0-13m, data acquisition did not start right away

Data Codes applied -
O2 data coded "8" (questionable); D = downcast U = Upcast
0-10m: cast 52D
0-15m: cast 051D, 028D, 025D, 025U, 001D 
0-20m: cast 002D, 003D
0-25m: cast 
0-30m: cast 006D, 007D, 065D, 047D, 042D, 030D, 030U, 027D, 026D, 023D, 010D
0-40m: cast 008D, 064D, 032D, 033D, 034D, 004D, 005D, 012D, 013D, 014D
0-50m: cast 054D, 057D, 059D, 066D, 046D, 041D, 031D, 035D, 040D, 024D, 022D, 011D
0-60m: 056D, 049D, 048D, 039D, 018D, 017D, 016D 
0-70m: 062D, 037D
0-75m: cast 035D, 020D, 
0-80m: cast 061D, 036D
0-100m: cast 058D, 063D, 19D,  
0-120m: cast 009D
0-150m: cast 060D, 045D, 044D, 021D
0-175m: cast 055D,
0-200m: cast 015D
0-220m: cast 043D,

20-60m: 043U

Salinity data coded "8" or "9"
Cast 003U: Primary salt 30-50m
Cast 055D: Primary salt 0-8m
Cast 063U: Secondary Salt 30-50m
Cast 031U: Secondary Salt 40-515m