\begin{table}%t3
%\centering
\par
\caption{Table of all identified lines in the medium resolution spectra from BW~Vul. Groups of elements without line spacing mark blends. Ion stands for element and $\lambda $~[\AA] is the central wavelength.}\label{t3}
\begin{tabular}{ll|ll|ll}
\hline\hline
\multicolumn{1}{c}{Ion}&\multicolumn{1}{c||}{$\lambda$ [\AA]} & \multicolumn{1}{c}{Ion}&\multicolumn{1}{c||}{$\lambda$ [\AA]} &\multicolumn{1}{c}{Ion}&\multicolumn{1}{c}{$\lambda$ [\AA]} \\ \hline
 C~{\sc ii}  &6582.882& S~{\sc ii} &5428.655& Al~{\sc iii}&4480.009\\
        &        &       &        & Al~{\sc iii}&4479.971\\
 C~{\sc ii}  &6578.053& S~{\sc ii} &5207.038& Al~{\sc iii}&4479.885\\
        &        & O~{\sc ii} &5206.650&       &\\
 H~{\sc i}   &6562.797& O~{\sc ii} &5206.715& He~{\sc i} &4471.682\\
        &        &       &        & Ne~{\sc i} &4471.587\\
 Ne~{\sc i}  &6402.246& Fe~{\sc iii}&5194.160& He~{\sc i} &4471.488\\
        &        & Fe~{\sc iii} &5193.909& He~{\sc i}&4471.485\\
 Ne~{\sc i}  &6382.991&       &        & He~{\sc i} &4471.473\\
        &        & O~{\sc ii} &5190.565& He~{\sc i} &4471.469\\
 N~{\sc ii}  &6379.616& O~{\sc ii} &5190.494&       &\\
        &        & N~{\sc ii} &5190.375& O~{\sc ii} & 4395.935\\
 Si~{\sc ii} &6371.371&       &        & Fe~{\sc iii}& 4395.755\\
        &        & N~{\sc ii} &5179.347&       &\\
 Fe~{\sc iii} &5876.337&       &        & K~{\sc ii} &4388.159\\
 He~{\sc i}  &5875.966& O~{\sc ii} &5175.986& C~{\sc iii} &4388.017\\
 He~{\sc i}  &5875.640&       &        & He~{\sc i} &4387.929\\
 He~{\sc i}  &5875.625& O~{\sc ii} &5175.908&       &\\
 He~{\sc i}  &5875.615&       &        & O~{\sc ii} & 4319.865\\
 He~{\sc i}  &5875.614& N~{\sc ii} &5175.888& Fe~{\sc ii}& 4319.680\\
 He~{\sc i}  &5875.599&       &        & O~{\sc ii} & 4319.625\\
        &        & H~{\sc i}  &4861.323&       &\\
 Fe~{\sc iii} &5891.904& Si~{\sc ii}&4861.074& C~{\sc ii} & 4317.266\\
 C~{\sc ii}  &5891.597& O~{\sc ii} &4860.962& O~{\sc ii} & 4317.136\\
        &        & Fe~{\sc ii}&4860.677&       &\\
 Si~{\sc iii} &5739.734& N~{\sc ii} &4860.162& Fe~{\sc iii}& 4310.355\\
        &        &       &        & Fe~{\sc iii}& 4310.337\\
 Al~{\sc iii} &5722.730& O~{\sc ii} &4676.231&       &\\
 Fe~{\sc iii} &5722.468&       &        & K~{\sc ii} & 4309.096\\
 Fe~{\sc iii} &5722.023& O~{\sc ii} &4673.732& O~{\sc ii} & 4309.077\\
        &        & Si~{\sc ii}&4673.284& O~{\sc ii} & 4308.891\\
 Si~{\sc iii} &5716.287& Si~{\sc ii}&4673.256&       &\\
        &        &       &        & O~{\sc ii} & 4304.166\\
 N~{\sc ii}  &5710.766& O~{\sc ii} &4661.635& O~{\sc ii} & 4303.833\\
        &        &       &        & O~{\sc ii} & 4303.615\\
 Si~{\sc iii} &5704.590& O~{\sc ii}  &4650.838& Fe~{\sc ii} & 4303.176\\
        &        &       &        & O~{\sc ii} & 4303.124\\
 N~{\sc ii}  &5454.214& Ar~{\sc ii}&4579.349& O~{\sc ii} & 4302.901\\
 S~{\sc ii}  &5453.885& O~{\sc ii} &4579.269&       &\\
        &        &       &        & Ne~{\sc ii}& 4297.017\\
 N~{\sc ii}  &5452.075& Si~{\sc iii}&4574.757& Fe~{\sc iii}& 4296.851\\
 Si~{\sc iii} &5451.960&       &        & Fe~{\sc iii}& 4296.814\\
 Ni~{\sc iii} &5451.874& Si~{\sc iii}&4567.840& Ti~{\sc iii}& 4296.693\\
 Si~{\sc iii} &5451.455&       &        &       &\\
        &        & Mg~{\sc ii}&4481.325& O~{\sc ii} & 4294.871\\
 S~{\sc ii}  &5432.797& Mg~{\sc ii}&4481.150& S~{\sc ii} & 4294.402\\
        &        & Mg~{\sc ii}&4481.126& O~{\sc ii} & 4294.037\\ \hline
\end{tabular}
\end{table}