\begin{table}%t10
\caption{\label{tab:abundf}Relative abundances $n_{\xi} / n_{{\rm b}}$ of fluorine species at redshifts $z=1000$, $z=100$ and $z=10$ in the SBBC (left), NSBBC1 (middle) and NSBBC2 (right) models.}
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\par
\begin{tabular}{l l l l l l l l l l}
\hline
\hline
& & SBBC & & & NSBBC1 & & & NSBBC2 &\\
\hline
Species & $z=1000$ & $z=100$ & $z=10$ & $z=1000$ & $z=100$ & $z=10$ & $z=1000$ & $z=100$ & $z=10$\\
\hline\noalign{\smallskip}
$[{\rm F}]$ & $3.3 \times 10^{-27}$ & $3.2 \times 10^{-27}$ & $3.2 \times 10^{-27}$ & $3.6 \times 10^{-27}$ & $3.6 \times 10^{-27}$ & $3.6 \times 10^{-27}$ & $1.6 \times 10^{-24}$ & $1.6 \times 10^{-24}$ & $1.6 \times 10^{-24}$\\
$[{\rm F}^-]$ & $2.6 \times 10^{-44}$ & $1.7 \times 10^{-36}$ & $1.3 \times 10^{-36}$ & $2.9 \times 10^{-44}$ & $1.9 \times 10^{-36}$ & $1.5 \times 10^{-36}$ & $1.3 \times 10^{-41}$ & $8.6 \times 10^{-34}$ & $6.6 \times 10^{-34}$\\
$[{\rm HF}]$ & $7.8 \times 10^{-32}$ & $3.2 \times 10^{-29}$ & $3.5 \times 10^{-29}$ & $9.1 \times 10^{-32}$ & $3.5 \times 10^{-29}$ & $3.8 \times 10^{-29}$ & $4.1 \times 10^{-29}$ & $1.6 \times 10^{-26}$ & $1.7 \times 10^{-26}$\\
\hline
\end{tabular}
\end{table}