\begin{table}[htbp]
\centering
\caption{DADOS-M6-Laplace2D.}
\begin{tabular}{ccccc}
\toprule
$N$ & $l_1$ & $l_{\infty}$ & $p_{E}^{*}$ - $l_1$ & $p_{E}^{*}$ - $l_{\infty}$
\\ \midrule

 129&6.8978587582E-06&1.7409801076E-05&&\\
 257&8.9877784393E-11&2.6101743926E-10&1.6227824502E+01&1.6025393993E+01\\
 513&5.4153584831E-16&1.6675717530E-15&1.7340548191E+01&1.7256037835E+01\\
1025&1.0325079802E-21&3.2553123802E-21&1.9000544386E+01&1.8966521418E+01\\
2049&5.4908207419E-28&1.7551728548E-27&2.0842627784E+01&2.0822751442E+01\\
\bottomrule
\end{tabular}
%\label{tab:addlabel}
\end{table}
