\begin{table}%t1
\caption{Sample and observation log.}\label{tab:exposure}
\small%\centerline
 {
\begin{tabular}{lcccc}
\hline \hline
Source & $z$ & Filter & ToT & Seeing  \\
 (1)  & (2)         & (3)            & (4)& (5) \\
\hline
0316-257  & 3.13 & $K$ & 100  & 0.7\arcsec~$\times$ 0.4\arcsec \\
\hline
0406-244  & 2.44  & $H$ & 90   & 0.7$\arcsec~$$\times$ 0.6\arcsec \\
0406-244  &      & $K$ & 100  & 0.8\arcsec~$\times$ 0.6\arcsec \\
\hline
0828+193  & 2.57 & $H$ & 135  & 0.7\arcsec~ $\times$ 0.5\arcsec \\
0828+193  &      & $K$ & 170  & 0.7\arcsec~ $\times$ 0.5\arcsec \\
\hline
\end{tabular}}
\medskip
Column (1) -- source ID. Column (2) -- redshift. Column (3)
-- total exposure time (on target) in min. Column (4) -- seeing.  For
TXS0828+193, the seeing was determined from a star within the field of
view. Otherwise, we estimated the seeing from the standard star.
\end{table}