\begin{table}%t3
\caption{\label{t3}Values and upper limits to the EW of the iron emission 
line in 1ES 1210$-$646.}
%%\centering

\par
\begin{tabular}{lr}
\noalign{\smallskip}
\hline\hline
\noalign{\smallskip}
\multicolumn{1}{c}{Observation} & $EW$ (keV) \\
%\noalign{\smallskip}
\hline
\noalign{\smallskip}
XRT \#1   & 1.6~$\pm$~0.3 \\
XRT \#2   & $<$0.9 \\
XRT \#3   & $<$0.2 \\
JEM-X     & $<$0.4 \\
%\noalign{\smallskip}
\hline
\end{tabular}
\par
\tablefoot{A line width ($\sigma$) of 0.16~keV (see Table~\ref{t2}) was assumed to evaluate the above upper limits.}
\end{table}