def LiqEtlp_pT(P,T,x_N2):
	x = (P-5.60097073e+02)/3.71707300e-01
	y = (T--1.75716179e+02)/1.16025133e-01
	z = (x_N2-7.84620737e-01)/1.65897362e-02
	output = \
	    1*-8.99626337e+02
	liq_etlp = output*1.00000000e+00+0.00000000e+00
	return liq_etlp