I created this table, but i want to increase the height of the rows so that the text would be centered and not hitting the horizontal lines.
I have this code:
\begin{document}
\begin{center}
\begin{tabular}{||c | c | c | c||}
\hline
& EUROSTOXX50 & Nikkei225 & DAX30 \\ [1ex]
\hline\hline
$R_{adj} ^2$ & 0,389 & 0,233 & 0,663 \\ [1.9ex]
\hline
$\hat{\theta}$ & 0,623 & 0,157 & 0,482 \\[1.9ex]
\hline
$\hat{\alpha} $& 0,165 & 0,133 & 0,497 \\[1.9ex]
\hline
\end{tabular}
\end{center}
\end{document}


