\begin{table}%t1
%\centering
\par
\caption{\label{tab1}Predicted ${\rm [O/Fe]}_{\odot}$ and ${\rm [Fe/H]}_{\odot}$ values at the time of formation of the solar system plus the value of ${\rm [Fe/H]}_{\rm knee}$ at which the knee for each model occurs.
Normalization to the solar values of Asplund et~al. (\cite{Asplund2005}).}
\begin{tabular}{cccc}
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\hline
\hline
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Model & ${\rm [O/Fe]}_{\odot}$ & ${\rm [Fe/H]}_{\odot}$ & ${\rm [Fe/H]}_{\rm knee}$ \\
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\hline
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SD    & 0.095      & $-0.013$  &  $-0.8$\\
DD    & 0.095     & $-0.038$ &  $-0.8$\\
MVP06 & 0.07      & $-0.003$  &  $-1.8$\\
S04   & 0.06      & $0.01$ &  $-0.6$\\
PHS08 & 0.22      & $-0.16$  &  $-0.45$\\
%\noalign{\smallskip}
\hline
\end{tabular}
\end{table}