def VapEtlp_pP(P,T,x_N2):
	x = (P-5.62017561e+02)/2.47804900e-01
	y = (T--1.74928217e+02)/4.47955333e-02
	z = (x_N2-7.23608844e-01)/6.31400225e-03
	output = \
	    1*1.00100462e+01
	vap_etlp = output*1.00000000e+00+0.00000000e+00
	return vap_etlp