\begin{table}[htbp]
\centering
\caption{DADOS-Laplace2DNU.}
\begin{tabular}{ccccc}
\toprule
$N$ & $l_1$ & $l_{\infty}$ & $p_{E}^{*}$ - $l_1$ & $p_{E}^{*}$ - $l_{\infty}$
\\ \midrule

   5&&&&\\
   9&&&&\\
  17&6.8413728105E-05&6.5146672802E-04&&\\
  33&4.2369562118E-06&6.2482532854E-05&4.0131857258E+00&3.3821666565E+00\\
  65&2.5833235003E-07&7.8722379110E-06&4.0357279954E+00&2.9886072103E+00\\
 129&1.5932282462E-08&1.0331416243E-06&4.0192034507E+00&2.9297357876E+00\\
 257&9.8629567788E-10&1.3194656771E-07&4.0137889406E+00&2.9690123064E+00\\
 513&6.9696070335E-11&1.6661738844E-08&3.8228709914E+00&2.9853429472E+00\\
\bottomrule
\end{tabular}
%\label{tab:addlabel}
\end{table}
