Table 3.

Mean values and uncertainties of the experimental NBS virial coefficients at 30, 40, and 50 °C [2]

t	${\overline{B}}_{aw}^{(a)}$	$\overline{\sigma }$b	Systematic error	3σ + syst.
°C	cm3/mol	Percent	Percent	Percent
30	−29.2	0.6	4	5.8
40	−26.3	.7	4	6.1
50	−23.6	1.4	6	10.2

^aFrom [2].

^b$\overline{\sigma }$ = standard deviation of the mean value of ${\overline{B}}_{aw}$.