\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&&&&\\
  33&4.5557475320E-06&7.3815060804E-05&&\\
  65&2.8161160954E-07&7.4717946534E-06&4.0159090828E+00&3.3043884943E+00\\
 129&1.7650802739E-08&9.7468073440E-07&3.9959011086E+00&2.9384531728E+00\\
 257&1.0954212455E-09&1.2418077720E-07&4.0101761255E+00&2.9724878621E+00\\
 513&7.3743195210E-11&1.5664302418E-08&3.8928320282E+00&2.9868894378E+00\\
\bottomrule
\end{tabular}
%\label{tab:addlabel}
\end{table}
