//JPL		C-13-O
//Temp (K)	log(Z)
1.000	0.0065
3.000	0.1875
6.000	0.4207
9.375	0.5909
18.75	0.8712
37.50	1.1620
75.00	1.4579
150.0	1.7565
225.0	1.9318
300.0	2.0564