\begin{table}%t4
%\centering
\par
\caption{Metallicity and temperature determination for \object{$\eta$ Boo} (since 1990). 
The errors on the selected parameters are
chosen to encompass all acceptable values (last line).}
%\begin{center}
\par
\begin{tabular}{lll}
\hline
\hline
 $T_{\rm eff}$ [$\degr$ K] & [Fe/H] & References \\
\hline
6000 & 0.16 & McWilliam (\cite{mcw})\\
6219 & 0.30/0.37& Balachandran (\cite{bal})\\
6068 & 0.19 & Edvardsson et~al. (\cite{edv})\\
5943 & 0.20 & Gratton et~al. (\cite{gra})\\
--   & 0.23 & Mishenina (\cite{mis})\\
--   & 0.28 & Fuhrma (Cayrel de Strobel \cite{cay})\\
6003 & 0.25 & Cenarro et~al. (\cite{cen})\\
--   & 0.16 & Buzzoni et~al. (\cite{buz})\\
6000 & 0.25 & Feltzing \& Gonzalez (\cite{fel})\\
6120 & 0.16& Gray (\cite{gray})\\
5964 & 0.19& Mallik et~al. (\cite{mal})\\
5957 & 0.15 & Nordstrom et~al. (\cite{nord}) \\
5942 & 0.18 & Allende Prieto et~al. (\cite{all})\\
\hline
6030~$\pm$~90 & 0.23~$\pm$~0.07 & \\
\hline
\end{tabular}\\
%\end{center}
\par
\label{tab:temp}
\end{table}