\begin{table}%t1
%\centering
\par
\caption{Log of the observations with WFC@INT.\label{tab:obslog}}
\begin{tabular}{llccc} 
\hline \hline
 Date & Field & $t_{{\rm exp}}$ (s) & Seeing & Airmass \\
\hline
\multicolumn{5}{c}{$B_{\rm H}$ band} \\
 99-10-13 & F0028+0515 & 10~000 & $1.6''$ & 1.8--1.1 \\
 99-10-14 & F0027+0555 & 10~000 & $1.6''$ & 1.2--1.1 \\
 99-10-13 & F0228+0115 & 10~000 & $1.7''$ & 1.4--1.2 \\
 99-10-14 & F0226+0106 & 10~000 & $1.1''$ & 1.6--1.1 \\
\hline
\multicolumn{5}{c}{$R_{{\rm H}}$ band} \\
 99-10-12 & F0028+0515 & 3600 & $1.4''$ & 1.8--1.2 \\
 99-10-14 & F0027+0555 & 4200 & $1.6''$ & 1.9--1.2 \\
 99-10-12 & F0228+0115 & 4800 & $1.2''$ & 1.7-1.3 \\
 99-10-13 & F0226+0106 & 6000 & $1.4''$ & 1.5--1.1 \\
\hline
\end{tabular}
\end{table}