\begingroup
\small
\setlength{\tabcolsep}{4pt}
\begin{tabular}{rrrr}
\toprule
$\varepsilon$ & $\max\|v\|_h$ & $\max E_{v,\mathrm{quad}}$ & $\max C_v$\\
\midrule
0.000 & $0$ & $0$ & $0$\\
0.025 & $1.6674\times10^{-2}$ & $2.3514\times10^{-4}$ & $1.1046\times10^{-2}$\\
0.050 & $3.3356\times10^{-2}$ & $9.4014\times10^{-4}$ & $2.1975\times10^{-2}$\\
0.100 & $6.6969\times10^{-2}$ & $3.7755\times10^{-3}$ & $4.4017\times10^{-2}$\\
\bottomrule
\end{tabular}
\endgroup