\begin{table}%t2
\caption{Spectral lines having their origin mainly in the primary and
spectral lines with the strongest contributions of the secondary (wavelength
in~\AA, ions, and~RMT number of transition).}\label{tab2}
%\centering
\par
\begin{tabular}{|clr|clr|}
\hline \hline
\multicolumn{3}{|c|}{primary} & 
\multicolumn{3}{c|}{secondary}\\
\hline
5183.604 &\ion{Mg}{i} &2        &6102.722 &\ion{Ca}{i}&    3\\
5528.398 &\ion{Mg}{i} &9	&6122.219 &\ion{Ca}{i}&    3\\
5275.994 &\ion{Fe}{ii}&49	&4957.453 &\ion{Fe}{i}&  318\\
5284.092 &\ion{Fe}{ii}&41	&5615.652 &\ion{Fe}{i}&  686\\
5316,693 &\ion{Fe}{ii}&48+49	&5658.684 &\ion{Fe}{i}&  685\\
4911.205 &\ion{Ti}{ii}&114&&&\\
5226.534 &\ion{Ti}{ii}&70&&&\\
\hline
\end{tabular}
\end{table}