\begin{table}%T2
   %\centering
\small
      \caption{Lower lifetime limits  
               $T_{\rm{min}}$ at different significance levels
               for 1612~MHz OH masers
               based on observations in this paper. $P_n^m$ is the 
               probability for finding exactly $m$ extinguished maser among
               $n$ stars reobserved after $\Delta t$ years.}
         \label{lA-prob}
         \begin{tabular}{rrrrrll}
            \hline\hline
            %\noalign{\smallskip}
             $n$ & $m$ &$\Delta t$& $T_{\rm{min}}$& $P_n^m$ & \multicolumn{2}{l}{Comments} \\
           % \noalign{\smallskip}
                 &     & [yr]     & [yr]    &  [\%]   &      &        \\
            %\noalign{\smallskip}
            \hline
            %\noalign{\smallskip}
            114  &  0  &  28      &    550  &  0.2  &  3$\sigma$ & This paper\\
            114  &  0  &  28      &   1050  &  4.6  &  2$\sigma$ &\\
            114  &  0  &  28      &   2800  & 31.8  &  1$\sigma$ &\\
%              7  &  0  & $>$ 100 & 15 & 31.8  &  1$\sigma$ & Etoka \& LSQ 02\\
%             37  &  0  & $>$ 100 &  3 & 31.8  &  1$\sigma$ & Langevelde GC\\ 
            %\noalign{\smallskip}
            \hline
         \end{tabular}
   \end{table}