\begin{table}%t3
\caption{\label{met_reg_tab}Properties of low entropy regions: clsters in Italics are ``AGN~CC-remnants'',  while clusters in bold type are ``merger \mbox{CC-remnants}''.}
%\centering
\par
\begin{tabular}{c c c}
\hline\hline \noalign{\smallskip}  
Cluster & Metal abundance (solar) & BCG\tablefootmark{a} \\
\hline
\it{A1650}   &   $0.397   \pm  0.021$ & Y \\
\it{MKW3s}   &   $0.459   \pm   0.009$ & Y \\
\it{A4038}\tablefootmark{b}   &   $0.402    \pm  0.008$ & Y  \\
\it{A1644}\tablefootmark{b}  &   $0.703   \pm  0.049$ & Y \\
\bf{A1689}   &   $0.298   \pm   0.017$ &  Y  \\
\bf{A3558}   &   $0.350  \pm    0.010$ & Y \\
\bf{A576}    &  $0.520   \pm    0.035$ & Y \\
\bf{A754}    &  $0.314     \pm  0.021$ & N\tablefootmark{c}\\
\bf{A3562}   &   $0.471   \pm   0.021$ & Y \\
\bf{A3571}   &   $0.349    \pm  0.013$ & Y \\
\bf{A3667}   &   $0.327    \pm 0.012$ & N \\
\bf{A2256}   &   $0.351   \pm   0.038$ & N \\
A2319   &   $0.242   \pm    0.012$ & Y \\
A3266   &   $0.232   \pm  0.039$& Y \\
A399    &  $0.221   \pm  0.053$ & Y \\
A401    &  $0.262   \pm   0.044$ & N \\
A3158   &  $ 0.275   \pm  0.077$ & N \\
A119    &  $0.242    \pm  0.078$ & N \\
A2255\tablefootmark{d}   &  $0.547   \pm   0.224$ & \\
A3532\tablefootmark{d}  &   $0.473    \pm  0.095$ & \\
Triangulum Australis\tablefootmark{d}  &     $0.369  \pm    0.151$ &  \\
\hline                                  
\end{tabular}
\tablefoot {\tablefoottext{a}{``Y'' if the BCG is found in the low-entropy region and ``N''~if it is elsewhere.} 
\tablefoottext{b}{even if the central entropy of this cluster is within the reach of AGN~outbursts, it~also shows some indications of on-going interaction and cannot be unambiguously associated to the ``AGN~\mbox{CC-remnant} class'' (see~text).} 
\tablefoottext{c}{The BCG 2MASSX~J09083238-0937470 is not associated to the \mbox{CC-remnant}, which however coincides with the position of the elliptical galaxy 2MASSX~J09091923-0941591.} 
\tablefoottext{d}{Due to the large indetermination of the metal abundance estimate, we could not unambiguously detect or exclude the presence of a metal abundance excess in this~object.}}
\end{table}