CTD Data Format Document
                           for OPPEX cruises
                              July 7, 2008

                     University of Hawaii at Manoa
                             1000 Pope Road
                         Honolulu, Hawaii  96822

    CTD data was collected using a SeaBird CTD 9/11 Plus at the maximum
sampling rate of 24 samples per second (24 Hz). They were screened for
errors and processed to 1-dbar averages. Each file contains one full
profile (e.g., op1s4c2up.ctd contains the up-cast CTD data from
OPPEX-1, station 4, cast 2).

    CTD data are written to files using formats specified by the WOCE
Hydrographic Programme Office. These formats are based on NODC formats,
and are detailed in the WHP Office Report WHPO 90-1, available from
Steve Diggs, WHPO Data Manager, Scripps Institution of Oceanography,
9500 Gilman Drive, La Jolla, CA 92093-0214.

    The files are self-explanatory; one column is written for each
measured parameter.  Missing data are filled with -9. A three-line
heading labels each column.  Variables having asterisks in their
heading have a quality flag associated with them. These quality flags
are concatenated as a quality word which is listed as the last variable
in each row.  The values each digit can assume and their meanings
follows:


Quality Indicators:

	Flag  Meaning
	 1    not quality controled
	 2    good data
	 3    suspect (i.e.  questionable) data
	 4    bad data
	 5    missing data
	 9    variable not measured during this cast


Data Record Format:

	Column  Format	Item
	 1-  8  f7.1	Pressure [decibars]
         9- 16  f7.3    Temperature [ITS-90]
        17- 24  f7.3    Salinity [PSS-78]
        25- 32  f7.4    Oxygen [ml/l]
        33- 40  f7.4    Fluorescence [ug/l]
        41- 48  f7.2    PAR [volts]
        49- 56  f7.3    Nitrate [umol/l]
        57- 64    i4    Number of Observations
        65- 72    a7	Quality flags for pressure - nitrate