//VASTEL		p-H2O
//Temp (K)	log(Z)
1.000	0.0000
3.000	0.0000
6.000	0.0002
9.375	0.0044
18.75	0.0793
37.50	0.3527
75.00	0.7631
150.0	1.2019
225.0	1.4625
300.0	1.6485