\begin{table}%t1
\caption{Properties of the most prominent features in the average spectrum of NSV~13983. Column~1 represents the observed wavelength determined by a Gaussian fit, Col.~2 provides the equivalent width, Cols.~3 and~4 the line identification and the rest wavelength, respectively. A colon marks uncertain values.}\label{t1}
 \small %\centerline
 {\begin{tabular}{c c c c c}
\hline\hline
\small{(1)} & \small{(2)} & \small{(3)} & \small{(4)} & \small{(5)} \\
$\lambda$ [$\AA$] & $W_{\lambda}$  [$\AA$] & Identification & $\lambda_{0}$  [$\AA$] & Remarks \\
\hline
3798 & 7: & H10 & 3798 & [1] \\
3835 & 18: & H9 & 3835 & [1]\\
3889 & 23: & H8 + He I & 3889 & [1]\\
3933 & 26: & Ca II K & 3934 & [1]\\
3969 & 51: & H$\epsilon$ + Ca II H & 3970 & [1]\\
4027 & 12 & He I & 4026 &  \\
4102 & 41 & H$\delta$ & 4102 & \\ 
4341 & 60 & H$\gamma$ & 4341 & \\
4473 & 14 & He I & 4471 & \\
4862 & 95 & H$\beta$ & 4861 & \\
4924 & 10 & He I & 4922 & \\
5017 & 13: & He I & 5016 & [2]\\
5171 & 12 & Fe II & 5169 & \\
5325 & 8 & Fe II & 5317 & [3] \\
5879 & 36 & He I & 5876 & \\
6564 & 117 & H$\alpha$ & 6563 & \\
6680 & 14 & He I & 6678 & \\
7065 & 9 & He I & 7065 & \\
\hline
\end{tabular}}
\medskip
 [1] Lines are blended; [2] Line is distorted due to a CCD artifact;  \\
 \protect[3]~ID uncertain. 
\end{table}