\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&3.5273033075E-03&3.0102427664E-02&&\\
  17&1.8816470784E-01&7.5099062791E+00&-5.7372866151E+00&-7.9627712529E+00\\
  33&8.8348871146E-04&5.4933100139E-02&7.7345686451E+00&7.0949753809E+00\\
  65&1.0420648134E-06&4.1478007486E-05&9.7276228792E+00&1.0371113405E+01\\
 129&4.3606188687E-08&3.8427483104E-06&4.5787683016E+00&3.4321361999E+00\\
 257&3.6449067789E-09&4.9948553666E-07&3.5805790778E+00&2.9436236785E+00\\
 513&1.9963669749E-10&6.4391828596E-08&4.1904330687E+00&2.9554933780E+00\\
\bottomrule
\end{tabular}
%\label{tab:addlabel}
\end{table}
