Table 2.

Results

Run No.	Total pressure	Normalized enhancement factor1	Predicted enhancement factor2	Residual	Standard deviation of the predicted value3
	P bars	fnorm	fpred	fnorm - fpred
30 °C (all runs included)
39	10.7312	1.0326	1.0331	-0.0005	0.0053
47	15.1088	1.0449	1.0459	-.0010	.0041
48	15.3079	1.0366	1.0465	-.0099	.0041
41	19.7704	1.0768	1.0596	+ .0172	.0034
42	19.9344	1.0587	1.0601	-.0014	.0034
20	30.1929	1.0893	1.0910	-.0017	.0053
40	35.5133	1.1049	1.1074	-.0025	.0072
Residual standard deviation				.0090
30 °C (run nos. 41 and 48 deleted)
39	10.7312	1.0326	1.0325	+ 0.0001	0.0001
47	15.1088	1.0449	1.0450	-.0001	.0001
42	19.9344	1.0587	1.0589	-.0002	.0001
20	30.1929	1.0893	1.0890	+.0003	.0001
40	35.5133	1.1049	1.1050	-.0001	.0001
Residual standard deviation				.0002
40 °C
34	14.6417	1.0405	1.0410	-0.0005	0.0010
19	30.1957	1.0847	1.0832	+ .0015	.0006
27	40.4557	1.1115	1.1120	-.0005	.0006
22	50.3962	1.1393	1.1406	-.0013	.0007
21	60.9945	1.1727	1.1719	+ .0008	.0010
Residual standard deviation				.0013
50 °C
32	10.5512	1.0283	1.0294	-0.0011	0.0008
37	10.6310	1.0287	1.0296	-.0009	.0008
36	10.7441	1.0292	1.0298	-.0006	.0008
43	10.7546	1.0282	1.0298	-.0016	.0008
46	10.7953	1.0277	1.0299	-.0022	.0008
35	10.7989	1.0293	1.0300	-.0007	.0008
31	14.6231	1.0423	1.0390	+ .0033	.0007
33	14.8620	1.0387	1.0396	-.0009	.0007
30	25.3585	1.0642	1.0650	-.0008	.0006
17	30.1977	1.0828	1.0769	+ .0059	.0006
16	30.2324	1.0811	1.0770	+ .0041	.0006
29	36.5953	1.0909	1.0929	-.0020	.0006
26	40.8462	1.1013	1.1036	-.0023	.0006
23	50.3229	1.1287	1.1279	+ .0008	.0007
24	76.3139	1.1997	1.1974	+ .0023	.0012
28	90.9356	1.2355	1.2383	-.0028	.0016
25	102.704	1.2718	1.2723	-.0005	.0019
Residual standard deviation				.0026

¹Experimental enhancement factor adjusted to nominal temperature.

²Predicted enhancement factor obtained by calculation using eq (4) with appropriate coefficients from table 3.

³The method of calculation is given by Natrella [22], p. 6–12.