\begin{table}%t2
\caption{\label{tab:gain}Expected gain factor when using the Yin-Yang grid. }
\small%\centering
\par
\begin{tabular}{lcc}
\hline\hline\noalign{\smallskip}
Computational domain            & Angular grid resolution & Gain factor \\  
\hline 
 full $4\pi$ sphere              & $3^\circ$               & 26 \\
                                 & $2^\circ$               & 40 \\
                                 & $1^\circ$               & 80 \\
\noalign{\smallskip}
 sphere except for a cone         &                       &    \\
 of $5^\circ$ half opening angle   & $1^\circ$              &  7 \\
 cut-out at both poles            &                       &    \\
\hline
\end{tabular}
\end{table}