\begin{table}%tA.1
\caption{\label{tab:t1}Values of $C^{00}_{ll'{\rm mm'}}$.}
%\centering
\small
\begin{tabular}{c|ccc}
\hline \hline
mm$'$/\ $ll'$ & 2, 2 & 1, 1 & 0, 0 \\ 
\hline
%&&& \\[-8pt]
2, $-$2 & $1/\sqrt{4\pi}$ & 0  & 0  \\ 
1, $-$1 & $-1/\sqrt{4\pi}$ &  $-1/\sqrt{4\pi}$ &    \\  
0, 0 & $1/\sqrt{4\pi}$ &  $1/\sqrt{4\pi}$ &  $1/\sqrt{4\pi}$\\   
$-$1, 1 & $-1/\sqrt{4\pi}$ &  $-1/\sqrt{4\pi}$ &   \\   
$-$2, 2 & $1/\sqrt{4\pi}$ & 0  &  0\\  
\hline
\end{tabular}
\end{table}