\begin{table}%t2
 %\centering
\par
\caption{\label{tab02}Spectroscopic observations of PG~1219.}
%\centering
\par
\begin{tabular}{lcccc} \hline\hline
Date & Start time & Length  & Number of & Observat.\\
2006 & (UT) & (h) & spectra & \\ \hline
 8 Apr. & 3:23 & 8.9  & 810 & KPNO \\
 9 Apr. & 2:47 & 9.5  & 850 & KPNO \\
11 Apr. & 7:34 & 4.7  & 425 & KPNO \\
17 Apr. & 20:43 & 8.3  & 757 & NOT \\
18 Apr. & 20:32 & 8.9  & 760 & NOT \\
19 Apr. & 20:29 & 8.7  & 826 & NOT \\
20 Apr. & 20:31 & 8.0  & 756 & NOT \\ \hline
\end{tabular}
\end{table}