\begin{table}%t3
\par
\caption{\label{t:atmpar}Adopted atmospheric parameters and derived~Iron abundances
for observed stars in NGC~2506, NGC~6134, and~IC~4651; $n$~indicated the number of
lines retained in the analysis.
In the last column we give for comparison the value of gravity derived from
photometric information.}
%\centering
\par
\begin{tabular}{rccccrccrccc}
\hline\hline
Star   &  $T_{\rm eff}$ & $\log$ $g$ & [A/H] & $v_t$  & $n$ &[Fe/H]I & rms & $n$ & [Fe/H]II & rms &$\log ~g$\\
       &     (K)        &  (dex)     &  (dex)& (km s$^{-1}$) &&&&&&&(phot.)\\
\hline
\multicolumn{12}{c}{NGC~2506}      \\
459 & 4450 & 1.06 &$-$0.37  & 1.36  & 137& $-$0.37& 0.16 &10 &$-$0.37&0.17 & 1.74\\
438 & 5030 & 2.53 &$-$0.19  & 1.17  & 109& $-$0.18& 0.11 &13 &$-$0.18&0.15 & 2.68\\
443 & 4980 & 2.32 &$-$0.21  & 1.20  & 102& $-$0.21& 0.12 &13 &$-$0.21&0.09 & 2.60\\
456 & 4970 & 2.54 &$-$0.21  & 1.17  &  83& $-$0.21& 0.19 &10 &$-$0.21&0.14 & 2.95\\
\multicolumn{12}{c}{NGC~6134} \\
404 & 4940 & 2.74 & +0.11   & 1.14  & 128&  +0.11 & 0.16 &12 &  +0.11&0.12 & 2.60\\
929 & 4980 & 2.52 & +0.24   & 1.17  & 117&  +0.24 & 0.16 &11 &  +0.24&0.19 & 2.67\\
875 & 5050 & 2.92 & +0.16   & 1.12  & 126&  +0.16 & 0.14 &13 &  +0.16&0.15 & 2.73\\
428 & 5000 & 3.10 & +0.22   & 1.10  &  82&  +0.22 & 0.16 & 9 &  +0.23&0.14 & 2.76\\
421 & 4950 & 2.83 & +0.11   & 1.13  &  81&  +0.11 & 0.12 & 9 &  +0.11&0.13 & 2.68\\
527 & 5000 & 2.98 & +0.05   & 1.11  &  83&  +0.05 & 0.11 & 8 &  +0.05&0.12 & 2.71\\
\multicolumn{12}{c}{IC~4651}       \\
 27 & 4610 & 2.52 & +0.10   & 1.17  & 128&  +0.10 & 0.15 &10 &  +0.10&0.17 & 2.51\\
 76 & 4620 & 2.26 & +0.11   & 1.21  & 129&  +0.10 & 0.17 &11 &  +0.10&0.17 & 2.51\\
 72 & 4500 & 2.23 & +0.13   & 1.21  & 120&  +0.13 & 0.13 & 9 &  +0.13&0.21 & 2.25\\
 56 & 3950 & 0.29 & $-$0.34 & 1.46  &  89& $-$0.34& 0.17 & 6 &$-$0.35&0.15 & 1.23\\
146 & 4730 & 2.14 & +0.10   & 1.21  & 125&  +0.11 & 0.16 &11 &  +0.11&0.16 & 2.59\\
\hline
\end{tabular}
\end{table}