\begin{table}%t1
\caption{\label{Tab:Obs_Sum}Observation program summary.}
%\centerline
{\small\begin{tabular}{ccccc}
\hline \hline
Year  & Period & Nights & Telescope & Spectra \\ 
\hline
2000 & July--September & 22 & OHP 1.93-m & 60 \\
2001 & August & 12 & OHP 1.93-m & 50 \\
2001 & October--December & 29 & OHP 1.52-m & 290 \\ 
2002 & June--November  & 53 & OHP 1.52-m & 396 \\
2003 & January & 23 & OHP 1.52-m & 207 \\ 
2004 & June--September & 29 & OHP 1.52-m & 231 \\ 
2005 & July--August & 20 & OHP 1.52-m & 126 \\
2007 & September--October & $^{*}$ & OAC 0.91-m & 28 \\ 
2008 & March--July & $^{*}$ & OAC 0.91-m & 18 \\ 
\hline
Total &  & 188+ &  & 1~406 \\ 
\hline 
\end{tabular}}
\par
$ ^{*}$ Queue mode.
\end{table}