function CalCond = condcal(Condfreq,Temp,Pres,A,B,C,D,M)

%  condcal -- calibrate raw data of SBE 4 Conductivity
%      Meter  (Sea Bird Electronics, Bellevue, WA)
%
%      Condfreq is the cond. meter output frequency in kHz.
%      Temp is temperature in degrees Celsius.
%      Pres is pressure in decibars.
%      A, B, C, D, and M are calibration constants.
%      CalCond is conductivity in Siemens/meter.
% 
%      Fran Hotchkiss, December 9, 1997.

num = A.*(Condfreq.^M) + B.*(Condfreq.^2) + C + D.*Temp;
pfac = 9.57e-8;
denom= 10*(1 - pfac.*Pres);
CalCond = num ./ denom;