\begin{table}%T3
%\centering
\par
\caption{Properties of magnetogram data {\it (Data used are from NSO/Kitt
Peak in cooperation with
 NSF/NOAO, NASA/GSFC, and NOAA/SEL.)}. }
\begin{tabular}{ll}
\hline\hline
\it Date & 3 November 1997\\
\it Start & 16:48:56 \\
\it End & 17:43:33 \\
\it Image size (in pixels) & $1788\times1788$ \\
\it Pixel side & 1.15 arcsec \\
\it $\lambda$ & 8688.641~\AA \\
\hline
\end{tabular}
\label{tab:3.1}
\end{table}