\begin{table} %t1           
%\centering
\par
\caption{\label{t1}{\it XMM-Newton} observation log  for Mrk~841.}                  
\begin{tabular}{c c c c c}
\hline\hline                
\noalign{\smallskip}
 Date          & OBSID &  Exp &  \tablefootmark{1}count rate   & \tablefootmark{2}$F_{0.3-2~\rm  keV}$  \\    
(yyyy/mm/dd)  &        --    & (ks)   & Cts/s      & (10$^{-12}$~cgs)    \\
\hline 
 2001/01/13   & 0112910201 &  10 & 0.63 $\pm$ 0.01 &  26.6 $\pm$ 1.0  \\
 2001/01/13  & 0070740101 & 12 &   0.72 $\pm$ 0.01 & 26.6 $\pm$ 1.0    \\
 2001/01/14  & 0070740301 & 14 &    0.71 $\pm$ 0.01 & 26.6 $\pm$ 1.0   \\
\\
 2005/01/16  & 0205340201 &  45 &   0.19 $\pm$ 0.01 &   7.5 $\pm$ 0.5  \\
\\
 2005/07/17  & 0205340401 &  30   &  0.23 $\pm$ 0.01 & 9.1 $\pm$ 0.1   \\              
\hline                                  
\end{tabular}
\par
\tablefoot{\tablefoottext{1}{In RGS 2.}
\tablefoottext{2}{Not corrected for absorption; the 2001 flux refers to the global fit of 3 data sets.}}
\end{table}