\begin{table}%t1
%\centering
\par
\caption{Number of observing days, number of images, and average number of images
per day for each year from 1994 to 2004. }
\label{tabstat}
\begin{tabular}{cccc} 
\hline \hline
Year & \# days & \# images & Av. \# images/day \\ \hline
1994 & 82 & 4635 & 56.5 \\
1995 & 128 & 8175 & 63.8 \\
1996 & 187 & 9363 & 50.1 \\
1997 & 101 & 6281 & 62.2 \\
1998 & 58 & 3075 & 53.0 \\
1999 & 90 & 8502 & 94.5 \\
2000 & 168 & 13~535 & 80.6 \\
2001 & 191 & 27~170 & 142.2 \\
2002 & 162 & 23~308 & 139.6 \\
2003 & 182 & 31~754 & 174.5 \\
2004 & 169 & 43~979 & 260.2 \\ \hline
\end{tabular}
\end{table}