\begin{table}%t5
\caption{\label{t5}Envelope size from our VLTI/MIDI data and literature: Meilland et~al. (\cite{Meilland07}a$^1$,b$^2$, \cite{Meilland08}$^3$) and Gies et~al. (2008$^4$).}
%\centering
\par
\begin{tabular}{c|c|cc|ccc|ccc|cc}
\hline\hline
&$\kappa$ CMa&\multicolumn{2}{c|}{$\delta$ Cen} &\multicolumn{3}{c|}{$\alpha$ Ara} &p Car&$\zeta$ Tau&$\alpha$ Col & \multicolumn{2}{c}{$\beta$ CMi} \\
&&B$_1$&B$_2$&B$_1$&B$_2$&B$_3$&&&&B$_1$&B$_2$\\
\hline
$\phi$ (mas) at 8 $\mu$m  & $<$5.2  & $4.9 \pm1.8$ & $4.0 \pm1.8$ & $2.7 \pm1.1$  & $3.9 \pm1.4$ & $5.5 \pm0.3$ &  $<$6.0 & $<$2.6      & $<$2.3  & $<$6.8  & $<$1.1  \\
$\phi$ (mas) at 12~$\mu$m  & $<$8.4  & $5.3 \pm4.3$ & $6.9 \pm2.7$ & $3.6 \pm1.8$  & $6.0 \pm2.3$ & $8.1 \pm0.6$ &  $<$9.5 & $5.7\pm2.2$ & $<$3.6  & $<$10.5 & $<$1.8\\
\hline
&&&&&&&&&&&\\[-3mm]
$\phi$ (mas) at 2.1~$\mu$m &$<$3.6$^2$ &\multicolumn{2}{c|}{$1.6\pm0.4^3$}&\multicolumn{3}{c|}{$7.3\pm2^1$}&--&$1.79\pm0.07^4$&--&\multicolumn{2}{c}{--}\\
\hline
\end{tabular}
\end{table}