-- SATL91, Leg 2, Master Database --

     This file is a chronology of changes and/additions to the master
database for the SATL91 (South Atlantic, 1991) cruise, Leg 2.
  
     The data file accompanying this file has the basic structure of
SATL91X2.DBF, where the X represents the most recent change in an
alphabetical format, and 2 represents Leg 2.  If the changes go beyond
Z, the next change will be 1.  Example:  SATL91B2.DBF. This file you are
now reading should always accompany the master datafile.  Finally, a
file with a .CSV file extent may be present which is usually a comma
delimited file.

     The most recent changes are described immediately following this
sentence.

========================================================================
March 20, 1996
      (B. Huss)
      Today marks the release of version C of the Leg 2 master database,
SATL91C2.DBF.  See Version B for the file structure.

March 20, 1996
      (B. Huss)
      Calculated sigmatheta and theta using a slightly different algorithm
(SIGMA.FOR) and merged this data into SATL91B2.DBF.

November 3, 1995
      (B. Huss)
      Corrected the .UNI file (per Dr. Peng).

January 12, 1995
      (J. Hendee)
      Today marks the release of version B of the Leg 2 master database,
SATL91B2.  The new field structure is listed below.  The only change has
been the addition of the date field and the Operations Number (OPS_NO)
field, which is a concatenation of year (e.g., 91), Julian Day (e.g.
201), and an increasing operations number (e.g., 96).

Structure for database: satl91b2.dbf
Number of data records:     120
Date of last update   : 01/12/95
Field  Field Name  Type       Width    Dec
    1  DEC_LAT     Numeric       10      3 (Latitude Decimal Degrees)
    2  DEC_LON     Numeric       10      3 (Longitude Decimal Degrees)
    3  SAMPLE      Numeric       11
    4  OPS_NO      Character     11        (Operations Number)
    5  DATE        Character      8
    6  PRESSURE    Numeric       11
    7  DEPTH       Numeric       11
    8  TEMP        Numeric       10      3  (Temperature)
    9  TEMP_QC     Numeric       10         (QC Flag for Temperature)
   10  THETA       Numeric       11      3  (Potential Temperature)
   11  SIGMA_THET  Numeric       11      3  (Sigma Theta)
   12  BOT_SALIN   Numeric       10      3  (Bottle Salinity)
   13  QC_BOT_SAL  Numeric       10         (QC Flag for Bottle Salinity)
   14  OXY_WINK    Numeric       10      3  (Oxygen)
   15  OXY_QC      Numeric       11         (QC Flag for Oxygen)
   16  NO2         Numeric       10      2  (Nitrite)
   17  NO3         Numeric       10      2  (Nitrate)
   18  QC_NO3      Numeric       10         (QC Flag for Nitrate)
   19  SIO4        Numeric       11         (Silicate)
   20  QC_SIO4     Numeric       10         (QC Flag for Silicate)
   21  TCO2_AOML   Numeric       11      1  (Total CO2)
   22  QC_TCO2     Numeric       11         (QC Flag for Total CO2)
   23  FCO2_W20    Numeric       11      1  (Fugacity of CO2 at 20
                                             at 20 degrees)
   24  QC_FCO2     Numeric       11         (QC Flag for Fucacity of CO2
                                             at 20 degrees)
   25  TALK_CALC   Numeric       11      1  (Total Alkalinity Calculated)
** Total **                     262


July 20, 1994
        (J. Hendee)
File structure for file SATL91L2.DBF (South Atlantic '91, Leg 2):

Structure for database: satl91l2.dbf
Number of data records:     120
Date of last update   : 07/20/94
Field  Field Name  Type       Width    Dec
    1  DEC_LAT     Numeric       10      3
    2  DEC_LON     Numeric       10      3
    3  SAMPLE      Numeric       11
    4  PRESSURE    Numeric       11
    5  DEPTH       Numeric       11
    6  TEMP        Numeric       10      3
    7  TEMP_QC     Numeric       10
    8  THETA       Numeric       11      3
    9  SIGMA_THET  Numeric       11      3
   10  BOT_SALIN   Numeric       10      3
   11  QC_BOT_SAL  Numeric       10
   12  OXY_WINK    Numeric       10      3
   13  OXY_QC      Numeric       11
   14  NO2         Numeric       10      2
   15  NO3         Numeric       10      2
   16  QC_NO3      Numeric       10
   17  SIO4        Numeric       11
   18  QC_SIO4     Numeric       10
   19  TCO2_AOML   Numeric       11      1
   20  QC_TCO2     Numeric       11
   21  FCO2_W20    Numeric       11      1
   22  QC_FCO2     Numeric       11
   23  TALK_CALC   Numeric       11      1
** Total **                     243