\begin{table}%t2
\caption{\label{t2}2$\sigma$ Upper limit calculated from the AGILE data in three different time intervals.}
%\centering
\par
\begin{tabular}{ccc}
\hline\hline\noalign{\smallskip}
Time interval &  Energy &  U.L.Flux [ph~m$^{-2}$s$^{-1}$] \\ 
\hline
\multirow{2}{*}{ March 16--21} &  $>$100~MeV & $5.6 \times 10^{-3}$ \\
& $>$200~MeV &  $3.6 \times 10^{-3}$  \\ \hline
\multirow{2}{*}{March 25--30} &  $>$100~MeV & $5.5 \times 10^{-3}$ \\
& $>$200~MeV &  $2.8 \times 10^{-3}$  \\ \hline
\multirow{2}{*}{April 10--30} &   $>$100~MeV & $3.4 \times 10^{-3}$ \\
& $>$200~MeV &  $2.1 \times 10^{-3}$  \\ \hline
\end{tabular}
\end{table}