\begin{table}%t2
%\centering
\par
\caption{List of calibrators used in the present work, 
together with 12~\mbox{$\mu$m}\ fluxes ($F_{12}$), 
uniform-disk diameters ($d_{\rm{UD}}$) 
and the date as well as the time stamp ($t_{\rm obs}$) 
of the MIDI observations. 
The uniform-disk diameters were taken from the CalVin 
list available at ESO
({\tt http://www.eso.org/observing/etc/}). 
}
\label{table_calib}
\begin{tabular}{l r r c l}\hline\hline
Calibrator & $F_{12}$ (Jy) & $d_{\rm{UD}}$ (mas)  & Date & $t_{\rm obs}$ (UTC) \\ 
HD number  &               &                      & (2004)&                     \\ \hline 
18322      & 13.3          & $2.50\pm 0.12$       & Feb. 09 &  00:39:11 \\ 
           &               &                      & Feb. 09 &  01:39:04 \\ \hline
49161      & 10.4          & $2.88\pm 0.17$       & Feb. 09 &  02:45:52 \\ 
           &               &                      & Feb. 10 &  04:43:21 \\ \hline
67582      & 9.3           & $2.69\pm 0.25$       & Feb. 09 &  06:24:15 \\ 
           &               &                      & Feb. 09 &  07:13:39 \\ 
           &               &                      & Feb. 10 &  02:37:04 \\ 
           &               &                      & Feb. 10 &  03:46:12 \\ \hline
107446     & 32.4          & $4.54\pm 0.23$       & Feb. 09 &  08:08:53 \\ 
           &               &                      & Feb. 10 &  08:16:44 \\ \hline
85951      & 12.6          & $3.48\pm 0.18$       & Feb. 11 &  02:42:15 \\ 
           &               &                      & Feb. 11 &  05:37:52 \\ \hline
120404     & 13.3          & $3.03\pm 0.24$       & Feb. 11 &  07:36:34 \\ 
           &               &                      & Feb. 11 &  08:27:38 \\ \hline
\end{tabular}
\end{table}