\begin{table}%T1
\caption{Observations log.}\label{tab1}
%\centerline
{
\begin{tabular}{cccccccc } \hline \hline
Run  & Date     &Seeing  & Nights/phot &  $t_J$          &  $t_H$        &  $t_{K'}$ & No. of Obj.    \\
(1)  & (2)      &(3)     & (4)         &(5)&(6)&(7)&(8) \\
\hline
1    & Nov. 1999 & 1       &   1/1   & 10 m (10 s$~\times~$3) & 10 m (10 s$~\times~$3)& 10 m (6 s$~\times~$5)  &  8   \\
2    & Aug. 2000 & 0.9--1.1 &   7/3   & 12 m (10 s$~\times~$6) & 12 m (10 s$~\times~$6)& 12 m (6 s$~\times~$5)  & 19   \\
3    & Feb. 2001 & 1$\leq$ &   4/2   & 12 m (15 s$~\times~$8) & 12 m (15 s$~\times~$8)& 12 m (5 s$~\times~$12) & 17   \\
4    & Mar. 2001 &         &   6/0   & 12 m (10 s$~\times~$6) & 12 m (10 s$~\times~$6)& 12 m (10 s$~\times~$6) &  0   \\
5    & Jun. 2001 & 1.4--1.5 &   2/1   & 12 m (10 s$~\times~$6) & 12 m (10 s$~\times~$6)& 12 m (5 s$~\times~$12) &  6   \\
6    & Nov. 2001 & 1--1.5   &   3/2   & 12 m (10 s$~\times~$6) & 12 m (10 s$~\times~$6)& 12 m (5 s$~\times~$12) & 12   \\
7    & Feb. 2002 & 1.3--1.5 &   1/1   & 12 m (10 s$~\times~$6) & 12 m (10 s$~\times~$6)& 12 m (5 s$~\times~$12) &  3   \\
\hline
\end{tabular}}
\par
\medskip
(1) Run identification; (2) observation date; (3)  average seeing (FWHM) during the night; (4) total number of nights/total number of photometric-good nights; (5) total integration time in $J$-band with sub-integration time and number of frames at each position; (6) the same for $H$-band; (7) the same for $K'$-band; (9) total number of objects observed (including repetition and objects that are not in the  present sample).
\end{table}