\begin{table}%t4
%\centering
\par
\caption{\label{table:freqRV}Frequencies (in c~d$^{-1}$) deduced from the time-series analysis of various parameters (Cols.~3 to~7) of all studied lines listed in Col.~1 with the FEROS data. The symbol ``$-$'' means that a frequency search was performed but no significant frequency was found. The second column $V_{\rm rad}$ gives the value of the average radial velocity of each line (in km~s$^{-1}$). In
this column, the symbol ``$-$'' means that we did not calculate $V_{\rm rad}$ due to the presence of emission or blended lines.}
\small \begin{tabular}{lllllll}
\hline \hline
& $V_{\rm rad}$ & $lpv$   & RV   & EW &CD   & $FWHM$\\
Line   & km~s$^{-1}$   &c~d$^{-1}$&c~d$^{-1}$&c~d$^{-1}$&c~d$^{-1}$&c~d$^{-1}$\\
\hline
\ion{He}{i} 4026 &  --5  	 &  1.42   &	  &    &     &       \\
\ion{Si}{ii} 4128&  --   	 &  0.30   &	  &    &     &       \\
\ion{He}{i} 4143 &  13  	 &  1.24   &	  &    &     &       \\
\ion{C}{ii} 4267 &  6   	 &  1.25   &	  &    &     &       \\
\ion{He}{i} 4387 &  18  	 &  0.36   &  --   &    &  --  & --     \\
\ion{He}{i} 4471 &  4   	 &  0.69   & 0.69 &1.38& 0.69& --     \\
\ion{Mg}{ii} 4481&  14  	 &  0.69   & 0.69 & --  & 0.69&0.69   \\
\ion{He}{i} 4713 &  14  	 &  0.88   &	  &    &     &       \\
H$\beta$         &  --   	 &  1.26   &	  &    &     &       \\
\ion{He}{i} 4922 &  --   	 &  0.64   &	  &    &     &       \\
\ion{Fe}{ii} 5316&  --   	 &  0.35   &	  &    &     &       \\
\ion{He}{i} 6678 &  16  	 &  0.30   &	  &    &     &       \\
H$\alpha$        &  --   	 &  0.67   &	  &    &     &       \\
\hline
\end{tabular}
\end{table}