\begin{table}%t5
\caption{Values of $\alpha$ calculated from the damping timescales in Tables~\ref{table2a} and~\ref{table2b}.}\label{table4}
%\centering
\small
\begin{tabular}{@{\extracolsep{\fill}}c c c}
\hline \hline
$T$~(MK)&Equilibrium&Non-equilibrium\\
\hline
&&  \\[-8pt]
$0.5$&0.7~($R^2=0.9282$)&0.7~($R^2=0.9664$)\\
$1.0$&1.06~($R^2=0.9361$)&1.07~($R^2=0.9376$)\\
$2.0$&1.11~($R^2=0.9804$)&1.11~($R^2=0.9802$)\\
\hline
\end{tabular}
\end{table}