Table 2: Equivalent widths of the helium lines measured with the SARG-TNG and at Catania Astrophysical Observatory (last two columns). We compared our measurements with the B-type stars of similar effective temperature extracted from Gies & Lambert (1992). All equivalent widths are expressed in mÅ.
  A B C D E HD 207538
He II           SARG-TNG      Catania
4686 206 192 747 602 858 500 $\pm$ 60
5411           203 $\pm$ 34   250 $\pm$ 40
He I            
4713 251 246 243 230 235 297 $\pm$ 28
4921           514 $\pm$ 44   580 $\pm$ 40
5015 260 268 262 258 268 309 $\pm$ 20   308 $\pm$ 21
5047 139 144 114 130 102 142 $\pm$ 19   176 $\pm$ 20
5876           825 $\pm$ 29
6678           714 $\pm$ 33
7065           637 $\pm$ 54
A - HD 34816, $T_{\rm eff} = 29~890$ K, $\log g = 4.22$, $\xi = 6.7$ km s-1.
B - HD 36960, $T_{\rm eff} = 29~960$ K, $\log g = 4.30$, $\xi = 4.3$ km s-1.
C - HD 34078, $T_{\rm eff} = 31~420$ K, $\log g = 4.07$, $\xi = 6.9$ km s-1.
D - HD 36512, $T_{\rm eff} = 32~470$ K, $\log g = 4.29$, $\xi = 5.7$ km s-1.
E - HD 214680, $T_{\rm eff} = 34~370$ K, $\log g = 4.29$, $\xi = 12.2$ km s-1.


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