\begin{table}%t7
%\centering
\par
\caption{\label{tab_t2}Doubling/Halving times for the high intensity nights  MJD~53944 and    MJD~53946 estimated with two different samplings, using the two definitions explained in the~text.}          
\par
\begin{tabular}{c c c c c }   
\hline \hline \noalign{\smallskip}
 MJD & Bin size & $T_2$[min] & $\tilde{T_2}$[min] & Fraction of pairs  \\
\hline                      
53944 &  1~min & 1.65 $\pm$ 0.38  & 2.27 $\pm$ 0.77  &   0.53       \\
53944 &  2~min & 2.20 $\pm$ 0.60  & 4.45 $\pm$ 1.64   &  0.62       \\
\hline
53946  &  1~min & 1.61 $\pm$ 0.45  & 5.72 $\pm$ 3.83   &  0.25   \\
53946 & 2~min & 4.55 $\pm$ 1.19  & 9.15 $\pm$ 4.05     &  0.38   \\
\hline                 
\end{tabular}
\tablefoot {The final column corresponds to the fraction of flux pairs kept to estimate the doubling times.}
\end{table}