\begin{table}%t8
%\centering
\par
\caption{Equivalent widths of the 
detected narrow absorption features.}
\label{absew}
\begin{tabular}{ccc}
\hline\hline
HR      &  \multicolumn{2}{c}{Equivalent width [m\AA]} \\
\cline{2-3}
        &  Ca~II~K & Na~D$_{1,2}$ \\
\hline
1070    &     9      & -/-          ~\\
1092    &   121      & 300 / 241    ~\\
1582    &    40      &  30 / ~16    ~\\
2056    &    13      & -/-          ~\\
4943    &    32      & -/-          ~\\
\hline
\end{tabular}
\end{table}