This Calibration was done before the Dever cruise.  It was not used but has been saved for documentation sake.  The temps. for the pH4 buffer=21.0C, pH7 = 20.1C , pH10 = 18.9C.
I was told by SeaBird that the temps. for the buffers should be within 1 degree C from each other.  It was difficult to keep a steady temp. while testing in the Baltic Room.
The slope and offset seemed close enough to the Seabird calibration done in June, 2018.   DN

pHfit V 2.2
pH Calibration TimeStamp: 2019-04-14T01:00:27
SBE18/27 pH serial number: 18-1401


t = 294.150000
a = 0.000000
b = 7.566540
c = 4.827840
d = 18.000000
deter = 54.000000
slope = 0.268213
offset = 2.522180
final slope = 4.595522

pHslope = 4.5955
pHoffset = 2.5222

residuals:
    pH       Vout       res
   4.00      1.720     -0.011
   7.00      2.516      0.021
  10.00      3.330     -0.011