Table 1: Stellar target information and NaI equivalent width measurement.

Star		 (l,b) mv Sp E(B-V) distance NaI D-2 NaI D-1
          (pc) (mÅ) (mÅ)

HD 156385		 (343.2$^{\circ}$, -4.8$^{\circ}$) 6.9 WC7 0.38 1550(+500, -400) 625 $\pm$ 25 520 $\pm$ 20
HD 156575 (342.9$^{\circ}$, -5.2$^{\circ}$) 7.4 B0.5III 0.46 1100(+150, -200) 560 $\pm$ 25 500 $\pm$ 20
HD 157042 (342.0$^{\circ}$, -6.3$^{\circ}$) 5.2 B2.5IVe 0.09 221*(+48, -33) $185\pm15$ 115 $\pm$ 10
HD 157243 (344.9$^{\circ}$, -4.6$^{\circ}$) 5.1 B7III 0.06 232*(+50, -35) $165\pm15$ 120 $\pm$ 10
HD 157698 (342.7$^{\circ}$, -6.7$^{\circ}$) 7.2 B7III 0.11 763*(+2100, -220) 255 $\pm$ 25 190 $\pm$ 20
HD 157832 (342.8$^{\circ}$, -6.7$^{\circ}$) 6.7 B2Ve 0.25 780($\pm$350) 335 $\pm$ 20 $220\pm15$
HD 158042 (345.5$^{\circ}$, -5.2$^{\circ}$) 6.3 B5III 0.10 465*(+385, -150) $205 \pm20$ 155 $\pm$ 15

* Hipparcos distance.

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