\begin{table}%t2
%%\centering
\par
\caption{\label{tab:methods}Source sizes, expansion speeds, a lower limit for the expansion 
index $m$, and explosion dates (in 2008).}
\par
%\centerline
{\begin{tabular}{lcccccc}   
\hline\hline               
Method\tablefootmark{a} &$R_{2008}$&$R_{2009}$& $v_{{\rm exp}, m=1}$ &$t_0$ & $m$ & $t_0$\\
       & [$\mu$as] & [$\mu$as] & \kms & ($m=1$)& &($m=0.89$)\\
\hline
$R_{100\%}$   & 149 & 1008 & 15800 & Mar. 05 & $>$0.86 & Mar. 19\\
$R_{50\%}$    & 307 & 1462 & 21200 & Feb. 02 & $>$0.70 & Feb. 22 \\
$R_{25\%}$    & 380 & 1676 & 23800 & Jan. 24 & $>$0.66 & Feb. 14\\
CPM           & 320 & 1580 & 23100 & Feb. 07 & $>$0.71 & Feb. 25 \\
{\sc modelfit}& 320 & 1390 & 19600 & Jan. 22 & $>$0.65 & Feb. 12 \\
\hline
\end{tabular}}
\tablefoot{\tablefoottext{a}{For a description of the different methods see Sect. \ref{size}.}}\vspace*{2mm}
\end{table}