def VapEtlp_pP(P,T,x_N2):
	x = (P-5.61398049e+02)/2.47804900e-01
	y = (T--1.75105086e+02)/8.03391333e-02
	z = (x_N2-7.34239687e-01)/1.14658132e-02
	output = \
	    1*9.96552119e+00
	vap_etlp = output*1.00000000e+00+0.00000000e+00
	return vap_etlp