\begin{table}%T7
\caption{\label{t:sintesi}Comparison between Fe~I abundances from spectrum synthesis and~$\it EW$~analysis for observed stars in NGC~2506, NGC~6134, and~IC~4651.}
%\centering
\par
\begin{tabular}{rrccrl}
\hline\hline
Star & [Fe/H]I  & rms  & $n$  &   [Fe/H]I &Phase\\
     &   SS     &        &    &     $\it EW$  &\\
\hline
\multicolumn{6}{c}{NGC~2506}     \\	  
459  & $-$0.42  & 0.264  & 30 &   $-$0.37 &RGBtip\\
438  & $-$0.21  & 0.144  & 26 &   $-$0.18 &clump \\
443  & $-$0.15  & 0.079  & 19 &   $-$0.21 &clump \\
456  & $-$0.31  & 0.206  & 27 &   $-$0.21 &RGB   \\
\multicolumn{6}{c}{NGC~6134}     \\
404  &   +0.12  & 0.145  & 22 &     +0.11 &clump \\
929  &   +0.20  & 0.224  & 23 &     +0.24 &clump \\
875  &   +0.10  & 0.253  & 29 &     +0.16 &clump \\
428  &   +0.19  & 0.049  & 11 &     +0.22 &clump \\
421  &   +0.09  & 0.148  & 16 &     +0.11 &clump \\
527  &   +0.09  & 0.218  & 21 &     +0.05 &clump \\
\multicolumn{6}{c}{IC~4651}     \\
27   &   +0.16  & 0.200  & 25 &     +0.10 &clump \\
76   &   +0.07  & 0.141  & 19 &     +0.10 &clump \\
72   &   +0.18  & 0.172  & 21 &     +0.13 &RGB   \\
56   & $-$0.68  & 0.238  & 24 &   $-$0.34 &RGBtip\\
146  &   +0.18  & 0.198  & 23 &     +0.10 &clump\\
\hline
\end{tabular}
\end{table}