\begin{table}%t2
\caption{\label{elec_keady}Reaction rate coefficients for reaction R$_1$ and R$_2$ estimated by \citet{1986GRL..13.381}. }
%\centering
\par
\begin{tabular}{lll}
\hline \hline
$T$[K] & $k$(R$_1$) [cm$^3$/s] & $k$(R$_2$) [cm$^3$/s] \\
\hline
10~000 &$1.37 \times  10^{-11}$   &$9.32 \times  10^{-12}$ \\
15~000 &$1.15 \times  10^{-10}$   &$2.13 \times  10^{-10}$ \\
20~000 &$3.35 \times  10^{-10}$   &$1.01 \times  10^{-9}$    \\
25~000 &$6.32 \times  10^{-10}$   &$2.57 \times  10^{-9}$     \\
30~000 &$9.55 \times  10^{-10}$   &$4.77 \times 10^{-9}$     \\
\hline
\end{tabular}
\end{table}