\begin{table}%t1
\caption{\label{modelgrid}The parameters for the grid of models used.}
%\centering
\par
\begin{tabular}{lrlr}
\hline\hline \noalign{\smallskip}
\multicolumn{1}{c}{[Fe/H]} & \multicolumn{1}{c}{[$\alpha$/Fe]} & \multicolumn{1}{c}{$T_{\rm eff}$} & \multicolumn{1}{c}{$\log (g)$}\\
\hline
\multicolumn{4}{c}{MARCS model atmospheres}\\
--0.25 & +0.0, +0.1 & 3800, 3900, 4000, 4250, 4500, 4750, 5000 & 0.5, 1.0, 1.5, 2.0, 2.5 \\
--0.50 & +0.0, +0.2 & 3800, 3900, 4000, 4250, 4500, 4750, 5000 & 0.5, 1.0, 1.5, 2.0, 2.5 \\
--0.75 & +0.0, +0.3 & 3800, 3900, 4000, 4250, 4500, 4750, 5000 & 0.5, 1.0, 1.5, 2.0, 2.5 \\
--1.00, --1.50, --2.00 & +0.0, +0.4 & 3800, 3900, 4000, 4250, 4500, 4750, 5000 & 0.5, 1.0, 1.5, 2.0, 2.5 \\
--2.50, --3.00 & +0.4 & 3800, 3900, 4000, 4250, 4500, 4750, 5000 & 0.5, 1.0, 1.5, 2.0, 2.5 \\
--4.00, --5.00 & +0.4 & 3800, 3900, 4000, 4250, 4500, 4750, 5000 & 1.0, 1.5, 2.0, 2.5 \\
\hline
\multicolumn{4}{c}{Interpolated model atmospheres}\\
--1.25, --1.75 & & 4125, 4375, 4625, 4875  & 0.75, 1.25, 1.75, 2.25 \\
--2.25, --2.75  & & 4125, 4375, 4625, 4875 & 0.75, 1.25, 1.75, 2.25 \\
--3.50, --4.50 & & 4125, 4375, 4625, 4875 &        1.25, 1.75, 2.25 \\
\hline
\end{tabular}
\end{table}