\begin{table}%t10
\caption{Mean abundances in clusters and group of stars.}\label{t:meanabund}
%\begin{center}
\par
%%\end{center}
\par
{\begin{tabular}{lcccccccccccccc}
\hline\hline 
Element  &
\multicolumn{2}{c}{NGC 6441}&
\multicolumn{2}{c}{Metal-poor}&
\multicolumn{2}{c}{Metal-Rich}&
\multicolumn{2}{c}{NGC 6528}&
\multicolumn{2}{c}{NGC 6553}&
\multicolumn{2}{c}{Baade}&
\multicolumn{2}{c}{Terzan 7}\\
&\multicolumn{2}{c}{(1)}&
\multicolumn{2}{c}{(1)}&
\multicolumn{2}{c}{(1)}&
\multicolumn{2}{c}{(2)}&
\multicolumn{2}{c}{(3)}&
\multicolumn{2}{c}{Window (4)}&
\multicolumn{2}{c}{(5)}\\
&mean&rms&mean&rms&mean&rms&mean&rms&mean&rms&mean&rms&mean&rms\\
\hline 
$[$Fe/H$]$   &$-$0.43&0.08&$-$0.31&0.08&$-$0.02&0.08&  +0.07&0.02&$-$0.16&0.08&$-$0.33&    &$-$0.59&0.07\\   
$[$O/Fe$]${\sc i}  &  +0.14&0.20&  +0.32&0.09&  +0.13&0.04&  +0.07&0.11&  +0.50&0.13&  +0.03&0.18&       &    \\
$[$Na/Fe$]${\sc i} &  +0.46&0.18&  +0.22&0.17&  +0.27&0.07&  +0.40&0.12&       &    &  +0.21&0.37&       &    \\
$[$Mg/Fe$]${\sc i} &  +0.34&0.09&  +0.35&0.19&  +0.25&0.12&  +0.14&0.09&  +0.41&0.10&  +0.35&0.14&$-$0.11&0.07\\
$[$Al/Fe$]${\sc i} &  +0.30&0.15&  +0.11&0.29&$-$0.12&0.12&       &    &       &    &       &    &       &    \\
$[$Si/Fe$]${\sc i} &  +0.33&0.11&  +0.14&0.21&  +0.06&0.14&  +0.36&0.07&  +0.14&0.18&  +0.18&0.24&  +0.07&0.09\\
$[$Ca/Fe$]${\sc i} &  +0.03&0.04&  +0.02&0.14&$-$0.01&0.04&  +0.23&0.06&  +0.26&0.09&  +0.14&0.17& ~~0.00&0.14\\
$[$Sc/Fe$]${\sc ii}&  +0.15&0.15&  +0.03&0.24&$-$0.07&0.20&$-$0.05&0.10&$-$0.12&0.18&  +0.29&0.20&       &    \\
$[$Ti/Fe$]${\sc i} &  +0.29&0.10&  +0.17&0.22&  +0.20&0.08&  +0.03&0.07&  +0.19&0.06&  +0.34&0.10&$-$0.05&0.07\\
$[$Ti/Fe$]${\sc ii}&  +0.33&0.14&  +0.01&0.11&  +0.12&0.19&       &    &       &    &       &    &       &    \\
$[$V/Fe$]${\sc i}  &  +0.29&0.14&  +0.27&0.08&  +0.32&0.12&$-$0.20&0.09&       &    &  +0.06&0.19&       &    \\
$[$Cr/Fe$]${\sc i} &  +0.15&0.18&  +0.04&0.34&$-$0.06&0.01& ~~0.00&0.04&  +0.04&0.09&$-$0.04&0.19&       &    \\
$[$Mn/Fe$]${\sc i} &  +0.07&0.09&$-$0.04&0.12&  +0.18&0.07&$-$0.37&0.07&       &    &       &    &       &    \\
$[$Co/Fe$]${\sc i} &  +0.14&0.07&  +0.07&0.07&  +0.10&0.13&       &    &       &    &       &    &       &    \\
$[$Ni/Fe$]${\sc i} &  +0.13&0.07&  +0.09&0.04&  +0.04&0.02&  +0.10&0.05&  +0.01&0.07&$-$0.04&0.08&$-$0.19&0.05\\
$[$Y/Fe$]${\sc i}  &$-$0.05&0.24&$-$0.26&0.05&$-$0.20&0.20&       &    &       &    &       &    &       &    \\
$[$Zr/Fe$]${\sc i} &$-$0.40&0.19&$-$0.33&0.12&$-$0.51&0.10&       &    &       &    &       &    &       &    \\
$[$Ba/Fe$]${\sc ii}&  +0.17&0.13&  +0.19&0.06&  +0.07&0.05&  +0.14&0.07&       &    &  +0.20&0.28&       &    \\
$[$Eu/Fe$]${\sc ii}&  +0.38&0.11&  +0.21&0.24&  +0.16&0.10&       &    &       &    &       &    &       &    \\
\hline\\[-2mm]
\end{tabular}}
\parbox{16cm}{
(1) This paper; (2) Carretta et~al. (\cite{Carretta2001}); (3) Cohen et~al. (\cite{Cohen1999}); (4) McWilliam \& Rich (\cite{McWilliam1994}); (5) Sbordone et~al. (\cite{Sbordone2005}).}
%\end{center}
\end{table}