\begin{table}%t3
%\centering
\par
\caption{Fluence upper limits ($90\%$ C.L.) for
neutrinos of different energies, obtained from IBD and NC classes
of events.\label{tb3}}
\begin{tabular}{ c  c  c  c  c }
\hline \hline
$E_{\nu}$ & $ \delta t =20$~s & & $\delta t = 100$~s &\\
& $\Phi_{\bar\nu_{\rm e}}$ $\rm [cm^{-2}]$ & $\Phi_{\nu_i}$ $\rm [cm^{-2}]$ & $
\Phi_{\bar\nu_{\rm e}}$ $\rm [cm^{-2}]$ & $\Phi_{\nu_i}$
$\rm [cm^{-2}]$ \\
\hline
 10 MeV & $4.64\times 10^{9}$ & -- & $9.85\times10^{9}$ & --\\
 15 MeV & $1.94\times 10^{9}$ & -- & $4.13\times 10^{9}$ & --\\
 20 MeV & $1.08\times 10^{9}$ & $1.29\times 10^{11}$ & $2.30\times 10^{9}$ & $3.32\times 10^{11}$\\
 30 MeV & $4.97\times 10^{8}$ & $1.51\times 10^{10}$ & $1.05\times 10^{9}$ & $3.90\times 10^{10}$\\
 40 MeV & $2.94\times 10^{8}$ & $6.06\times 10^{9}$ & $6.25\times 10^{8}$ & $1.56\times 10^{10}$\\
 50 MeV & $2.00\times 10^{8}$ & $3.54\times  10^{9}$ & $4.25\times 10^{8}$ & $9.10\times 10^{9}$\\
 60 MeV & $1.48\times 10^{8}$ & $2.50\times 10^{9}$ & $3.15\times 10^{8}$ & $6.44\times 10^{9}$\\
 70 MeV & $1.16\times10^{8}$ & $2.01\times 10^{9}$ & $2.47\times 10^{8}$ & $5.18\times 10^{9}$\\
 80 MeV & $9.52\times 10^{7}$ & $1.74\times 10^{9}$ & $2.02\times 10^{8}$ & $4.48\times 10^{9}$\\
 90 MeV & $7.85\times 10^{7}$& $1.60\times 10^{9}$ & $1.67\times 10^{8}$ & $4.12\times 10^{9}$\\
 100 MeV & $6.89\times10^{7}$& $1.53\times 10^{9}$ & $1.46\times 10^{8}$ & $3.93\times 10^{9}$\\
 \hline
\end{tabular}
\end{table}