Table 3: VINCI/VLTI angular diameter measurements of X Sgr.

JD		 Stations Baseline Phase ${\theta_{\rm {UD}}}$ (mas) ${\theta_{\rm {LD}}}$ (mas) N $\chi^2_{\rm red}$ Calibrators
    (m)   $\pm$ stat. $\pm$ syst. $\pm$ stat. $\pm$ syst.      

2 452 741.903		 B3-M0 138.366 0.560 $1.458 \pm 0.048 \pm 0.032$ $1.495 \pm 0.049 \pm 0.033$ 2 0.66 $\chi$ Sco
2 452 742.885 B3-M0 137.432 0.700 $1.511 \pm 0.058 \pm 0.034$ $1.549 \pm 0.059 \pm 0.035$ 3 0.52 $\chi$ Sco
2 452 743.897 B3-M0 137.903 0.844 $1.415 \pm 0.055 \pm 0.034$ $1.451 \pm 0.057 \pm 0.035$ 3 0.08 $\chi$ Sco
2 452 744.868 B3-M0 139.657 0.983 $1.460 \pm 0.051 \pm 0.029$ $1.497 \pm 0.052 \pm 0.030$ 2 0.09 $\chi$ Sco
2 452 747.848 B3-M0 139.530 0.408 $1.499 \pm 0.213 \pm 0.038$ $1.537 \pm 0.219 \pm 0.039$ 1 - $\chi$ Sco
2 452 749.832 B3-M0 139.084 0.691 $1.429 \pm 0.099 \pm 0.034$ $1.465 \pm 0.101 \pm 0.034$ 2 0.35 $\chi$ Sco
2 452 766.811 B3-M0 138.853 0.112 $1.393 \pm 0.070 \pm 0.036$ $1.428 \pm 0.071 \pm 0.037$ 4 0.09 $\chi$ Sco
2 452 768.877 B3-M0 128.228 0.406 $1.413 \pm 0.016 \pm 0.028$ $1.449 \pm 0.016 \pm 0.029$ 6 0.62 $\chi$ Sco


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