function p_23 = region23_pcalc(T)
% Description:      Calculates the pressure at a given temperature for the
%                   boundary between regions 2 and 3 based upon the IAPWS
%                   IF-97 Release               
% -------------------------------------------------------------------------
% Syntax:           p_23 = region23_pcalc(T)
%                   T           Temperature [K] 
% -------------------------------------------------------------------------
% Output:           p_23        Boundary pressure at T [MPa]    

n = region23_coeff;

p_23 = n(1) + n(2) * T + n(3) * T^2;