\begin{table}%t6 
\par
\caption{\label{t_excess}The logarithm of the IR~excess over the photosphere. }
\small     
%\centerline
{ 
\begin{tabular}{lcccc}       
\hline\hline 
           & $\log$  & $\log$  & $\log$  & $\log$  \\
Object     & $(F_{10}/F_{*,10})$ & $ (F_{24}/F_{*,24})$ & $ (F_{30}/F_{*,30})$ & $ (F_{70}/F_{*,70})$ \\ 
\hline 
MBM~12-1   & 0.0  & 0.0 & 0.0 & $<$2.1\\
MBM~12-2   & 1.5  & 2.0 & 2.0 & $<$3.2$^{a}$ \\
MBM~12-3   & 0.8  & 1.3 & 1.4 & $<$3.0$^{a}$ \\
MBM~12-4   & 1.5  & 2.2 & 2.1 & 3.2\\ 
MBM~12-5   & 1.0  & 1.6 & 1.6 & 2.6\\
MBM~12-6   & 0.9  & 1.6 & 1.7 & $<$2.8\\
MBM~12-7   & $<$0 & $<$0.6 & $<$1.2 & $<$2.9\\
MBM~12-8   & $<$0.4  & $<$0.8 & $<$1.5 & $<$3.3\\
MBM~12-9   & $<$0.2  & $<$0.8 & $<$1.7 & $<$3.2\\
MBM~12-10  & 0.9  & 1.4 & 1.4 & $<$2.7\\
MBM~12-11  & $<$0.1  & $<$0.6 & $<$1.6 & $<$3.0\\
MBM~12-12  & 0.6  & 1.2 & 1.3 & $<$2.1\\
 \hline
\end{tabular}}
\smallskip
$^{a}$ Combined flux of Lk\halpha \ 262 and 263.
\end{table}