\begin{table}%t3
\caption{\label{fit_c3_reac_tab}Derived reaction rates for
reactions R$_3$ and R$_4$ normalized to~$r_{\rm h}=1$~AU by~$r_{\rm h}^{-2}$.}
%\centering
\par
\begin{tabular}{lll}
\hline \hline
Date        &   R$_3$  [10$^{-7}$ s$^{-1}$]  &  R$_4$  [10$^{-7}$ s$^{-1}$] \\
\hline
23.11.1997  &$ 9.5 \pm 2.4 $     &$195. \pm 15. $\\
6.12.1997   &$15.4 \pm 5.1 $    & $202. \pm 22. $\\
19.12.1997  &$ 9.4 \pm 0.5 $     &$200. \pm 12. $\\
20.1.1998   &$ 9.6 \pm 3.2 $     &$202. \pm 20. $\\
21.1.1998   &$ 9.6 \pm 6.1 $     &$199. \pm 13.4$\\
21.3.1998   &$ 9.4 \pm 3.1 $     &$188. \pm 20.0$\\
17.8.1996   &$15.6 \pm 4.1 $    & $143. \pm 45.0$\\
2.10.1996   &$ 8.9 \pm 3.2 $     &$201. \pm 15.0$\\
\hline
\end{tabular}
\end{table}