\documentclass{aa}
\newcommand{\bra}{Br$\alpha$}
\newcommand{\brb}{Br$\beta$}
\newcommand{\brg}{Br$\gamma$}
\newcommand{\pfa}{Pf$\alpha$}
\newcommand{\pfb}{Pf$\beta$}
\newcommand{\pfg}{Pf$\gamma$}
\newcommand{\pfd}{Pf$\delta$}
\newcommand{\pff}{Pf(11-5)}
\newcommand{\pfh}{Pf(13-5)}
\newcommand{\hu}{Hu(14-6)}
\newcommand{\heii}{\ion{He}{ii}}
\newcommand{\hei}{\ion{He}{i}}
\newcommand{\hi}{\ion{H}{i}}
\newcommand{\oi}{\ion{O}{i}}
\newcommand{\feii}{\ion{Fe}{ii}}
\newcommand{\mgii}{\ion{Mg}{ii}}
\newcommand{\siiv}{\ion{Si}{iv}}
\begin{document}
\bf APPENDIX : Equivalent width measurements
\begin{table*}[!ht]
\begin{center}
  \caption[EW_OB_H]{Equivalent widths of hydrogen lines in normal O- and B- type stars.}
    \label{table4}   
\begin{tabular}{llcccccc}
\hline	  
\hline	
Name          &Spectral&2.6258      &2.6751     &2.8730     &3.2970      &3.7406      &4.0523\\		
              &Type    &\brb\       &\pfh\      &\pff\      &\pfd\       &\pfg\       &\bra\ \\		
\hline													
HD46223	      &O4V     &-           &-          &-          &-           & 1.7$\pm$0.8&-13.8$\pm$0.6\\	
HD190429      &O4Ia    &-9.4$\pm$1.8&-          &-          &-           &-           &-90.0$\pm$8.6\\	
HD46150	      &O5V     &-           &-          &-          &-           & 2.1$\pm$1.3& -6.2$\pm$0.5\\	
HD47839	      &O7V     &-           &-          &-          &-           & 6.5$\pm$1.3&  7.9$\pm$2.0\\	
HD24912	      &O7.5III &-           &-          &-          &-           &-2.6$\pm$0.8&-24.6$\pm$0.9\\	
QZSge	      &O7.5Ia  &-6.6$\pm$3.6&-          &-          &-           &-           &-66.8$\pm$8.1\\	
HD36861	      &O8III   &-           &-          &-          &-           & 1.3$\pm$1.9& -3.5$\pm$0.9\\	
HD37043	      &O9III   &-           &-          &-          &-           & 0.9$\pm$0.9& -3.5$\pm$0.5\\	
HR8327	      &O9II    &-           &-          &-          &-           &-           & -9.2$\pm$1.7\\	
HD37468	      &O9.5V   &-           &-          &-          &-           & 3.7$\pm$1.4&  3.7$\pm$1.2\\	
19Cep	      &O9.5Ib  &-           &-          &-          &-           &-           &-11.2$\pm$1.9\\	
HR7589	      &O9.5Iab &-           &-          &-          &-           &-           &-21.9$\pm$2.9\\		
$\alpha$ Cam  &O9.5Ia  &-4.1$\pm$0.6&-          &0.9$\pm$0.3&-           &-1.6$\pm$0.5&-50.1$\pm$1.5\\	
HD195592      &O9.7Ia  &-4.2$\pm$0.8&-          &-          &-           &-           &-68.4$\pm$1.9\\	
$\theta$ Car  &B0V     & 5.7$\pm$0.5&-          &1.7$\pm$0.6& 3.9$\pm$0.9& 2.2$\pm$0.7&  2.7$\pm$0.7\\	
HD37128	      &B0Ia    &-           &-          &-          &-           & 1.8$\pm$0.6&-14.0$\pm$0.4\\	
$\alpha$ Vir  &B1V     & 6.0$\pm$0.2&1.5$\pm$0.3&2.8$\pm$0.4& 4.5$\pm$0.4& 6.8$\pm$0.6&  7.1$\pm$0.4\\	
$\lambda$ Sco &B1.5IV  & 6.4$\pm$0.3&-          &2.8$\pm$0.4& 4.2$\pm$0.4& 4.9$\pm$0.5&  7.3$\pm$0.5\\		
$\epsilon$ Cma&B1.5II  & 4.8$\pm$0.3&1.6$\pm$0.4&1.9$\pm$0.4& 2.8$\pm$0.4& 4.9$\pm$0.7&  6.7$\pm$0.5\\	
V2118 Cyg     &B1.5Ia  & 4.9$\pm$0.6&2.4$\pm$0.4&2.3$\pm$0.4& 2.4$\pm$0.4& 3.9$\pm$1.0&-12.3$\pm$0.6\\	
$\alpha$ Pav  &B2IV    & 7.8$\pm$0.4&2.3$\pm$0.5&5.2$\pm$0.6& 6.4$\pm$0.7& 7.6$\pm$0.8&  7.5$\pm$0.7\\	
9 Cep	      &B2Ib    & 2.8$\pm$0.5&-          &-          & 1.7$\pm$0.7&-           & -3.1$\pm$0.6\\			
55 Cyg	      &B2.5Ia  & 4.9$\pm$0.3&3.1$\pm$0.3&2.8$\pm$0.5& 2.3$\pm$0.4& 3.6$\pm$0.6&  1.7$\pm$0.5\\	
$\iota$ Her   &B3IV    & 7.1$\pm$0.6&2.5$\pm$0.5&3.4$\pm$0.8& 3.8$\pm$0.6& 5.0$\pm$0.8&  7.4$\pm$0.9\\	
$\pi^{2}$ Cyg &B3III   & 6.0$\pm$1.1&2.4$\pm$1.1&3.0$\pm$1.4& 2.9$\pm$0.8&-           &  6.8$\pm$1.1\\		
$\kappa$Eri   &B5IV    & 5.7$\pm$1.4&6.0$\pm$1.5&6.3$\pm$1.5& 7.4$\pm$1.7& 4.7$\pm$2.0&  7.3$\pm$2.1\\	
$\iota$ Aql   &B5III   & 6.0$\pm$0.8&2.4$\pm$0.8&5.9$\pm$1.5& 6.5$\pm$1.2& 8.6$\pm$1.5&  6.9$\pm$1.3\\	
HR7699	      &B5II    & -          &5.2$\pm$1.7&5.0$\pm$1.5& 2.9$\pm$1.6&-           &-            \\		
$\eta$ Cma    &B5Ia    & 5.3$\pm$0.4&2.5$\pm$0.4&2.3$\pm$0.3& 3.1$\pm$0.5& 2.4$\pm$0.5& -0.9$\pm$0.4\\	
Cyg OB2 12    &B5Ia    & -          &2.1$\pm$0.3&2.5$\pm$0.3& 2.5$\pm$0.3& 2.9$\pm$0.6&-12.8$\pm$0.5\\			
$\zeta$ Dra   &B6III   & 8.5$\pm$0.5&5.6$\pm$0.6&7.3$\pm$0.7& 8.3$\pm$0.8& 6.7$\pm$0.7&  9.8$\pm$0.8\\	
$\alpha$ Gru  &B7IV    & 9.0$\pm$0.3&6.7$\pm$0.5&6.5$\pm$0.4& 8.4$\pm$0.5& 9.0$\pm$0.6&  9.5$\pm$0.5\\	
HT Sge	      &B7Ia    & 4.4$\pm$0.6&0.8$\pm$0.3&2.3$\pm$0.3& 2.5$\pm$0.5& 2.4$\pm$0.6& -7.8$\pm$0.5\\	
$\phi$ Eri    &B8V     & 9.4$\pm$0.8&5.2$\pm$0.9&6.2$\pm$0.8& 8.6$\pm$1.5& 7.3$\pm$1.1&  6.4$\pm$1.4\\		
$\gamma$ Gru  &B8III   & 6.8$\pm$0.4&3.5$\pm$0.5&6.5$\pm$0.6& 8.7$\pm$0.7&12.3$\pm$0.9&  8.7$\pm$0.6\\	
13 Cep	      &B8Ib    & 3.1$\pm$0.4&2.7$\pm$0.4&2.2$\pm$0.4& 2.2$\pm$0.4& 3.2$\pm$0.6& -           \\			
V2140 Cyg     &B8Ia    & 2.7$\pm$0.5&2.7$\pm$0.6&2.8$\pm$0.6& 3.7$\pm$0.8& 4.7$\pm$0.9& -2.3$\pm$0.6\\	
$\epsilon$ Hyi&B9V     & 9.3$\pm$0.7&5.0$\pm$1.0&8.5$\pm$1.4&11.6$\pm$1.5&14.3$\pm$2.2& 11.4$\pm$1.5\\	
$\alpha$ Del  &B9IV    & 8.1$\pm$0.6&5.2$\pm$0.9&7.3$\pm$1.0& 8.7$\pm$0.9&12.0$\pm$1.3&  9.7$\pm$1.2\\	
$\gamma$ Lyr  &B9III   & 8.4$\pm$0.3&8.1$\pm$0.5&7.1$\pm$0.4& 9.0$\pm$0.4& 9.5$\pm$0.5&  9.4$\pm$0.4\\	
$\sigma$ Cyg  &B9Iab   & 3.5$\pm$0.4&2.5$\pm$0.4&2.3$\pm$0.5& 3.4$\pm$0.7& 3.6$\pm$0.8&  4.7$\pm$0.9\\	
\hline\\	
\end{tabular}
\end{center}
\end{table*}
	
\begin{table*}[!ht]
\begin{center}
\caption[EW_OB_He]{Equivalent widths of helium lines in normal O- and B-type stars.}
    \label{table3}   
\begin{tabular}{llccccc}
\hline	      
\hline	
Name           &Spectral&2.6192     &2.8260      &3.0917       &3.7036     &4.0377     \\
 	       &Type    &\hei(6f-4d)&\heii(9-7)  &\heii(7-6)   &\hei(5d-4p)&\hei(5f-4d)\\	
\hline					
HD190429       &O4Ia    &-          &-9.4$\pm$2.4&-55.4$\pm$6.1&-          &-          \\
HD24912	       &O7.5III &-          &-           &-            &1.2$\pm$0.5&-          \\
QZ Sge	       &O7.5Ia  &-          &-           & -7.4$\pm$1.9&-          &-          \\
HD36861	       &O8III   &-          &-           &-            &1.0$\pm$0.9&0.8$\pm$0.7\\
HD37043	       &O9III   &-          &-           &-            &1.0$\pm$0.5&1.1$\pm$0.5\\
HD37468	       &O9.5V   &-          &-           &-            &0.8$\pm$0.6&-          \\
$\alpha$ Cam   &O9.5Ia  &1.5$\pm$0.3& 0.6$\pm$0.2& -2.0$\pm$0.4&4.3$\pm$0.6&2.3$\pm$0.6\\
HD195592       &O9.7Ia  &4.2$\pm$0.6&-           &-            &4.4$\pm$1.0&1.4$\pm$0.7\\
$\theta$ Car   &B0V     &1.5$\pm$0.4&-           &-            &2.0$\pm$0.8&1.9$\pm$0.5\\
HD37128	       &B0Ia    &-          &-           &-            &2.6$\pm$0.3&2.2$\pm$0.3\\
$\alpha$ Vir   &B1V     &3.1$\pm$0.3&-           &-            &0.8$\pm$0.3&2.3$\pm$0.3\\
$\lambda$ Sco  &B1.5IV    &2.5$\pm$0.3&-           &-          &0.4$\pm$0.2&3.3$\pm$0.4\\
$\epsilon$ Cma &B1.5II  &1.6$\pm$0.2&-           &-            &1.6$\pm$0.3&3.6$\pm$0.5\\
V2118 Cyg      &B1.5Ia  &2.3$\pm$0.3&-           &-            &3.3$\pm$0.5&3.7$\pm$0.8\\
$\alpha$ Pav   &B2IV    &-          &-           &-            &0.4$\pm$0.3&1.0$\pm$0.6\\
9 Cep	       &B2Ib    &1.0$\pm$0.4&-           &-            &1.9$\pm$0.9&3.0$\pm$1.1\\
55 Cyg	       &B2.5Ia  &1.9$\pm$0.3&-           &-            &2.6$\pm$0.6&3.1$\pm$0.7\\
\hline	
\end{tabular}
\end{center}
\end{table*}
	
	
	
	
\begin{table*}[!ht]
\begin{center}
\caption[EW_Be_H]{Equivalent widths of hydrogen lines of B emission line stars ( no stands for not measured).}
\label{table5}
\begin{tabular}{llccccccc}
\hline
\hline
Star              &Spectral&2.6258        &2.6751       &2.8730       &3.2970       &3.7406        &4.0209        &4.0523         \\ 
                  &Type    &\brb          &Pf(13-5)     &Pf(11-5)     &\pfd         &\pfg          &Hu(14-6)      &\bra           \\
\hline			        	                                                  	                                
\object{V1478~Cyg}&O9III[e]& -70.2$\pm$0.4& -4.8$\pm$0.6& -9.9$\pm$0.7&-22.0$\pm$1.0&-20.1$\pm$ 0.9& -3.6$\pm$ 1.0&-124.9$\pm$ 1.0\\ 
\object{HD~206773}&B0Vpe   & -37.6$\pm$3.6&-18.0$\pm$5.7&-16.3$\pm$5.2&-21.8$\pm$7.2&-46.9$\pm$10.9&-23.1$\pm$12.3&-128.7$\pm$10.0\\
\object{HD~5394}  &B0.5Ve  & -18.7$\pm$0.5&-15.1$\pm$0.6&-16.0$\pm$0.6&-16.4$\pm$0.9&-20.5$\pm$ 1.2&-23.7$\pm$ 1.3& -51.2$\pm$ 1.2\\
\object{HD~50013} &B1.5IVne& -20.8$\pm$1.1&-18.4$\pm$1.2&-22.2$\pm$1.3&-21.0$\pm$1.3&-24.0$\pm$ 1.6&-29.2$\pm$ 1.7& -36.6$\pm$ 1.5\\
\object{HD~200775}&B2V[e]  & -25.5$\pm$1.8& -4.4$\pm$1.3& -6.2$\pm$2.2& -8.7$\pm$1.7&-13.2$\pm$ 2.2& -5.2$\pm$ 1.9& -43.6$\pm$ 1.8\\ 
\object{HD~45677} &B2V[e]  & -19.5$\pm$0.6& -3.6$\pm$0.6& -4.4$\pm$0.7& -4.9$\pm$0.7& -4.9$\pm$ 1.0& -2.0$\pm$ 1.2& -20.8$\pm$ 0.9\\ 
\object{HD~56139} &B2IV-Ve & -34.1$\pm$1.5&-16.9$\pm$1.5&-22.6$\pm$1.6&-28.8$\pm$1.4&-41.0$\pm$ 2.0&-40.4$\pm$ 2.2&-108.0$\pm$ 2.2\\
\object{HD~105435}&B2IVne  & -41.1$\pm$0.6&-19.5$\pm$0.7&-23.6$\pm$0.7&-29.1$\pm$0.9&-38.2$\pm$ 1.2&-34.0$\pm$ 1.4&-116.5$\pm$ 1.1\\
\object{HD~205021}&B2IIIe  &   3.4$\pm$1.6&-            &-            &-            & -1.5$\pm$ 1.3& -1.9$\pm$ 1.4&  -9.4$\pm$ 1.2\\ 
\object{HD~187811}&B2.5Ve  &  -8.6$\pm$4.0&-19.6$\pm$7.5&-14.5$\pm$6.0&-16.9$\pm$6.5&-14.3$\pm$ 6.1&-14.4$\pm$ 5.9& -15.4$\pm$ 6.2\\
\object{HD~191610}&B2.5Ve  & -22.6$\pm$2.9&-17.3$\pm$4.3&-15.7$\pm$3.9&-21.6$\pm$3.4&-25.2$\pm$ 3.8&-24.5$\pm$ 4.7& -56.8$\pm$ 3.5\\
\object{HD~10144} &B3Vpe   &   6.9$\pm$0.9&  3.0$\pm$0.9&  5.6$\pm$1.1&  5.5$\pm$0.9&  6.3$\pm$ 1.0&  2.4$\pm$ 1.1&   3.9$\pm$ 1.1\\ 
\object{HD~56014} &B3IIIe  &   -          &-            &-            &-            &-             &-             & -13.9$\pm$ 7.3\\ 
\object{HD~50123} &B6Vnpe  &  -9.3$\pm$1.5& -4.7$\pm$1.3& -6.6$\pm$1.5& -7.3$\pm$1.5&-10.3$\pm$ 1.9&-10.1$\pm$ 2.2& -18.1$\pm$ 1.7\\ 
\object{HD~198183}&B6IVe   &   5.8$\pm$2.4&-            & -3.8$\pm$2.9&  7.3$\pm$5.4&-             &-             &  -5.1$\pm$ 2.4\\ 
\object{HD~209409}&B7IVe   & -32.0$\pm$2.2&-13.5$\pm$3.4&-13.2$\pm$2.9&-19.4$\pm$2.6&-30.9$\pm$ 3.0&-17.5$\pm$ 3.9&-102.0$\pm$ 3.0\\
\object{HD~193237}&B2pe    & -73.8$\pm$0.7&no           &-16.6$\pm$1.1&no           &-59.2$\pm$ 1.4&-16.3$\pm$ 1.5&-284.8$\pm$ 1.6\\ 
\object{HD~94910} &B2pe    & -98.7$\pm$0.7&no           &-16.3$\pm$0.8&no            &-73.4$\pm$ 1.2&-16.6$\pm$ 1.5&-360.3$\pm$ 1.4\\ 
\object{HD~93308} &Bp      &-109.2$\pm$1.2&no            &-15.0$\pm$1.0&no            &-21.5$\pm$ 1.1& -4.3$\pm$ 0.9&-109.4$\pm$ 1.3\\

\hline	
\end{tabular}
\end{center}
\end{table*}
	
	
\begin{table*}[!ht]
\begin{center}
\caption[EW_Be_He]{Equivalent widths of helium, oxygen and iron lines of B emission line stars.}
\label{table6}
\begin{tabular}{llccccccc}
\hline	
\hline	
Star              &Spectral&2.6192      &2.8935      &3.0813       &3.6617      &3.7036      &3.9378       &4.0377        \\
	          &Type    &\hei        &\oi         &\feii        &\oi         &\hei        &\feii        &\hei          \\
\hline			   		                                                                                  
\object{V1478~Cyg}&O9III[e]&-2.3$\pm$0.5&-1.8$\pm$0.7&-7.4$\pm$0.6 &-0.9$\pm$0.3&-0.5$\pm$0.3&-3.6$\pm$1.0 & -4.9$\pm$ 1.3\\ 
\object{HD~206773}&B0Vpe   &-           &-           &-            &-           &-           &-            &-20.4$\pm$16.8\\
\object{HD~5394}  &B0.5Ve  &-1.5$\pm$0.8&-2.0$\pm$0.5&-            &-2.1$\pm$1.5&-           &-            & -6.6$\pm$ 2.0\\
\object{HD~50013} &B1.5IVne&-           &-2.2$\pm$1.5&-            &-0.8$\pm$1.2&-           &-            & -2.2$\pm$ 1.4\\
\object{HD~45677} &B2V[e]  &-           &-           & -1.0$\pm$0.4&-           &-           &-            &-             \\
\object{HD~200775}&B2V[e]  &-           &-2.1$\pm$1.6&-            &-1.7$\pm$1.6&-           &-            &-             \\
\object{HD~56139} &B2IV-Ve &-           &-2.2$\pm$1.7&-            &-           &-           &-            & -2.8$\pm$ 1.8\\
\object{HD~105435}&B2IVne  &-           &-2.1$\pm$0.6& -1.3$\pm$0.7&-1.2$\pm$1.4&-           & -0.6$\pm$1.0& -3.3$\pm$ 1.5\\
\object{HD~205021}&B2IIIe  &-           &-           &-            & -          & 1.0$\pm$1.3&-            &  1.6$\pm$ 1.3\\
\object{HD~193237}&B2pe    &-8.6$\pm$0.8&-9.5$\pm$0.9& -9.2$\pm$1.4&-2.9$\pm$1.3&-4.8$\pm$0.9& -3.9$\pm$1.4&-32.0$\pm$ 2.1\\
\object{HD~94910} &B2pe    &-7.1$\pm$1.0&-           &-22.8$\pm$0.8&-           &-           &-12.8$\pm$1.4&-             \\
\object{HD~93308} &Bp      &-5.6$\pm$1.0&-           & -9.5$\pm$0.5&-           &-0.3$\pm$0.9& -1.6$\pm$1.0& -3.6$\pm$ 1.2\\
\hline	
\end{tabular}
\end{center}
\end{table*}

\end{document}