\begin{table}%T8
%\centering
\par
\caption{{\it First guess} abundance ratios [X/Fe] of the program stars.}
\begin{tabular}{lcrrr}
\hline
\hline
Species & No. &   I-18 &  I-36 & I-42 \\
\hline
%[OI]      & 1  &  +0.10 &  +0.20 &  +0.20 \\
%[O/Sc]    & 1  &  +0.10 &  +0.00 & --0.10 \\
$\rm [AlI/Fe]$   & 2  &  --0.15 &  +0.00 &  +0.15 \\
$\rm [NaI/Fe]$   & 2  &  +0.62 &  +0.30 &  +0.18 \\
$\rm [MgI/Fe]$   & 4  &  +0.24 &  +0.15 &  +0.31 \\
$\rm [SiI/Fe]$   & 3  &  +0.12 &  +0.08 &  +0.11 \\
$\rm [CaI/Fe]$   & 7  & --0.30 & --0.41 & --0.28 \\
$\rm [TiI/Fe]$   & 6  & --0.30 & --0.08 &  +0.23 \\
$\rm [TiII/Fe]$  & 1  & --0.15 & --     &  +0.26 \\
\hline \end{tabular}
\label{tabguess}
\end{table}