\begin{table}%[!ht]%T4
%\centering
\par
\caption{Spectral binning. Number of bins of 1/3 FWHM taken together
in intervals $E_1$--$E_2$, in the rest frame of the cluster.}
\label{tab:ebin}
%\centerline
{
\begin{tabular}{rrrl}
\hline\hline
$E_1$ & $E_2$ & binning & comments\\
(keV) & (keV) & factor  & \\
\hline
0.20 & 0.50 &  2 & most continuum\\
0.50 & 3.50 &  2 & many densely spaced lines\\
3.50 & 3.75 &  8 & continuum between Ar and Ca\\
3.75 & 4.25 &  3 & Ca lines\\
4.25 & 6.30 & 12 & continuum between Ca and Fe\\
6.30 & 7.20 &  4 & Fe--K lines\\
7.20 & 7.50 &  8 & continuum\\
7.50 & 8.70 &  4 & Fe--K, Ni--K lines\\
8.70 & 10.00 & 8 & continuum\\
\hline
\end{tabular}
}
\end{table}