\begin{table}%T2
\par
\caption{\label{TabR1e_cen}\label{tab2}Coordinates (J2000) of the cluster centers for 31 objects of the \rexcess\ cluster sample.}
\small
%\centering
\par
\begin{tabular}{l r r r r r}
\hline
\hline\noalign{\smallskip}
\multicolumn{1}{l}{Cluster} & 
\multicolumn{2}{c}{Local maximum} & 
\multicolumn{2}{c}{$P_1$ minimum} & \multicolumn{1}{c}{$F$} \\ 
\multicolumn{1}{c}{} & 
\multicolumn{1}{c}{RA } & 
\multicolumn{1}{c}{Dec} & 
\multicolumn{1}{c}{RA } & 
\multicolumn{1}{c}{Dec} & 
\multicolumn{1}{c}{} \\
\hline
{\rm R0003+0203}& 00~03~49.7&  02~03~57.5 & 00~03~49.6&  02~03~51.9& 1  \\
{\rm R0006-3443}& 00~05~59.9& --34~43~23.0 & 00~06~00.4& --34~43~19.3& 1  \\
{\rm R0020-2542}& 00~20~42.2& --25~42~24.5 & 00~20~41.9& --25~42~36.0& 1  \\
{\rm R0049-2931}& 00~49~23.0& --29~31~13.9 & 00~49~23.0& --29~31~11.8& 1  \\
{\rm R0145-5300}& 01~44~59.7& --53~01~03.1 & 01~44~58.1& --53~01~12.9& 1  \\
{\rm R0211-4017}& 02~11~24.8& --40~17~28.3 & 02~11~25.1& --40~17~28.4& 1  \\
{\rm R0225-2928}& 02~25~09.3& --29~28~36.3 & 02~25~08.5& --29~28~36.4& 1  \\
{\rm R0345-4112}& 03~45~46.2& --41~12~13.8 & 03~45~46.4& --41~12~15.7& 1  \\
{\rm R0547-3152}& 05~47~38.4& --31~52~12.2 & 05~47~38.5& --31~52~10.9& 1  \\
{\rm R0605-3518}& 06~05~54.2& --35~18~08.7 & 06~05~54.0& --35~18~08.3& 1  \\
{\rm R0616-4748}& 06~16~51.7& --47~47~40.4 & 06~16~51.5& --47~47~42.2& 1  \\
{\rm R0645-5413}& 06~45~29.3& --54~13~40.4 & 06~45~29.4& --54~13~38.9& 1  \\
{\rm R0821+0112}& 08~21~50.9&  01~11~52.4 & 08~21~50.7&  01~11~56.1& 1  \\
{\rm R0958-1103}& 09~58~22.3& --11~03~53.6 & 09~58~22.1& --11~03~50.3& 1  \\
{\rm R1044-0704}& 10~44~33.0& --07~04~08.6 & 10~44~32.9& --07~04~07.7& 1  \\
{\rm R1141-1216}& 11~41~24.4& --12~16~37.4 & 11~41~24.4& --12~16~38.8& 1  \\
{\rm R1236-3354}& 12~36~41.3& --33~55~37.2 & 12~36~41.0& --33~55~26.3& 1  \\
{\rm R1302-0230}& 13~02~53.3& --02~31~00.4 & 13~02~52.7& --02~30~56.9& 1  \\
{\rm R1311-0120}& 13~11~29.5& --01~20~27.7 & 13~11~29.4& --01~20~30.1& 1  \\
{\rm R1516+0005}& 15~16~18.1&  00~05~27.8 & 15~16~18.0&  00~05~23.1& 1  \\
{\rm R1516-0056}& 15~16~44.2& --00~58~11.9 & 15~16~44.5& --00~58~21.8& 1  \\
{\rm R2014-2430}& 20~14~51.7& --24~30~19.9 & 20~14~51.7& --24~30~21.6& 1  \\
{\rm R2023-2056}& 20~22~58.8& --20~56~56.1 & 20~22~59.0& --20~56~57.2& 1  \\
{\rm R2048-1750}& 20~48~12.2& --17~51~19.8 & 20~48~10.4& --17~50~35.1& 0  \\
{\rm R2129-5048}& 21~29~36.5& --50~48~52.2 & 21~29~40.9& --50~48~54.8& 0  \\
{\rm R2149-3041}& 21~49~07.6& --30~42~04.7 & 21~49~07.6& --30~42~04.6& 1  \\
{\rm R2157-0747}& --         & --           & 21~57~29.5& --07~47~54.9& 0  \\
{\rm R2217-3543}& 22~17~45.5& --35~43~30.1 & 22~17~45.6& --35~43~31.0& 1  \\
{\rm R2218-3853}& 22~18~40.3& --38~54~05.7 & 22~18~40.1& --38~54~00.6& 1  \\
{\rm R2234-3744}& 22~34~28.0& --37~43~52.1 & 22~34~27.1& --37~44~02.3& 0  \\
{\rm R2319-7313}& 23~19~40.2& --73~13~38.4 & 23~19~39.9& --73~13~36.1& 1  \\ 
\hline
\end{tabular}
\tablefoot{The first set of coordinates designate the local \mbox{X-ray} maximum found in \mbox{X-ray} 
images (0.5$-$2~keV band) smoothed with a Gaussian with $\sigma \sim 8$ arcsec. 
The second set of coordinates is derived from minimising the dipole ($P_1$) signal in 
the determination of the power ratios in the smallest aperture with a radius of 
$0.1\times R_{500}$. The flag, F, indicates which cluster centre has been used 
for the determination of the centre shift parameter $w$. For flag 1 the local 
maximum of the smoothed images was used (default), for clusters with flag 0 the P1 
minimisation result was used.}
\end{table}