Isotopically enriched Ar-40
May 14, 1986 p/kPa=130.565 T/K=273.1910		May 20, 1986 p/kPa=116.567 T/K=273.2014		May 21, 1986 p/kPa=103.570 T/K=273.2124
f/Hz	g/Hz	f/Hz	g/Hz	f/Hz	g/Hz
2475.9112	0.4009	2475.8900	0.4239	2475.8761	0.4490
4256.8550	0.5322	4256.8292	0.5630	4256.8164	0.5977
6008.6264	0.6482	6008.5974	0.6853	6008.5866	0.7288
7751.1476	0.7481	7751.1160	0.7929	7751.1071	0.8419
9489.5342	0.8410	9489.5017	0.8921	9489.4967	0.9497
9489.5330	0.8414	9489.5032	0.8926	9489.4965	0.9494
7751.1458	0.7481	7751.1171	0.7924	7751.1062	.0.8419
6008.6246	0.6483	6008.5990	0.6858	6008.5858	0.7283
4256.8535	0.5320	4256.8304	0.5629	4256.8156	0.5980
2475.9097	0.4011	2475.8917	0.4230	2475.8754	0.4487