Table 6: Comparison of masses and gravities derived from the evolutionary tracks and from quantitative analysis of the spectra. The quoted log $g_{\rm evol}$ values are given corrected to two decimal places to be consistent with the corresponding evolutionary masses. Note, however, that these are not an indication of the precision of these values, which we consider to be 0.1 dex.
Star $M_{\rm spec}$ ( $M_{\odot}$ ) $M_{\rm evol}$ ( $M_{\odot}$ ) log $g~_{\rm spec}$ log $g~_{\rm evol}$

$\theta ^1$ Ori A 14 15 4.0 4.03

$\theta ^1$ Ori C 45 33 4.1 3.98

$\theta ^1$ Ori D 18 16 4.2 4.16

$\theta ^2$ Ori A 39 22 4.1 3.97

$\theta ^2$ Ori B 9 13 4.1 4.26

10 Lac 20 25 3.9 4.02

15 Mon 40 34 4.1 4.05

$\tau$ Sco 11 16 4.0 4.16

**Table 6:** Comparison of masses and gravities derived from the evolutionary tracks and from quantitative analysis of the spectra. The quoted log $g_{\rm evol}$ values are given corrected to two decimal places to be consistent with the corresponding evolutionary masses. Note, however, that these are not an indication of the precision of these values, which we consider to be 0.1 dex.
Star	$M_{\rm spec}$ ( $M_{\odot}$ )	$M_{\rm evol}$ ( $M_{\odot}$ )	log $g~_{\rm spec}$	log $g~_{\rm evol}$
$\theta ^1$ Ori A	14	15	4.0	4.03
$\theta ^1$ Ori C	45	33	4.1	3.98
$\theta ^1$ Ori D	18	16	4.2	4.16
$\theta ^2$ Ori A	39	22	4.1	3.97
$\theta ^2$ Ori B	9	13	4.1	4.26
10 Lac	20	25	3.9	4.02
15 Mon	40	34	4.1	4.05
$\tau$ Sco	11	16	4.0	4.16

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