\begin{table}%t6
\caption{\label{tab:abundli}Relative abundances $n_{\xi} / n_{{\rm b}}$ of lithium species at redshifts $z=1000$, $z=100$ and $z=10$ in the SBBC model.}
%%\centering

\par
\begin{tabular}{l l l l l}
\hline
\hline
& & & SBBC &\\
\hline
Species && $z=1000$ & $z=100$ & $z=10$\\
\hline
$[{\rm Li}]$ && $1.4 \times 10^{-20}$ & $6.6 \times 10^{-10}$ & $8.8 \times 10^{-10}$\\
$[{\rm Li}^+]$ && $1.8 \times 10^{-9}$ & $1.1 \times 10^{-9}$ & $8.9 \times 10^{-10}$\\
$[{\rm Li}^-]$ && $4.4 \times 10^{-41}$ & $2.7 \times 10^{-22}$ & $6.6 \times 10^{-21}$\\
$[{\rm LiH}]$ && $9.5 \times 10^{-49}$ & $5.4 \times 10^{-21}$ & $1.3 \times 10^{-19}$\\
$[{\rm LiH}^+]$ && $1.5 \times 10^{-38}$ & $1.4 \times 10^{-28}$ & $6.7 \times 10^{-18}$\\
\hline
\end{tabular}
\end{table}