\begin{table}%t2
  \caption{\label{Tab:NOTdata}Nordic Optical Telescope data.}
%\centerline
{
    \begin{tabular}{l c c c c}
      \hline \hline
      $N^a$ & Observation dates & Julian date$^b$
                                   & Total$^c$
                                   & Used$^d$ \\
      \hline
      \multirow{2}{.8cm}{1--4} & June 09, 2003 & 3799.54 & \multirow{2}{.5cm}{42}
    & \multirow{2}{.4cm}{39}$^e$ \\
                                & June 12, 2003 & 3802.75 & & \\
      \hline
      \multirow{2}{.8cm}{9--12} & June 16, 2003 & 3807.47
                                & \multirow{2}{.5cm}{19} & \multirow{2}{.4cm}{19} \\
                                & June 20, 2003 & 3810.69 & & \\
      \hline
    \end{tabular}}
\par
  \medskip
  $^a$~Number of nights;
  $^b$~JD -- ${\rm JD}_0$ with ${\rm JD}_0 = 2~449~000.0$~days;
  $^c$~total number of spectra available;
  $^d$~number of spectra used for DI;
  $^e$~three spectra were dismissed due to poor SNR, see Sect.~\ref{Sec:DIclean}.
\end{table}