\begin{table} %t3
%\centering
\par
\caption{\label{t3}Emission lines parameters and emission measure for RRC in the three epochs.}      
\begin{tabular}{c  c c c c c c}
\hline\hline
\noalign{\smallskip}
Obs  &  Line  &  $\lambda$  &  Flux  &  $\Delta C$\tablefootmark{1} &  {\it FWHM} &  RRC EM  \\    
 --   &   --    &   ($\AA$)   & (10$^{-4}$~ph~cm$^{-2}$~s$^{-1}$)   & --  & ($\AA$)  &   (10$^{58}$~cm$^{-3}$) \\
\hline
               & OVII  (r)  &  21.600    &  $<$0.42  &   -- & 0-width   &	       \\
               & OVII  (i)  &  21.790    &  $<$0.15  &   -- & 0-width  & OVII $<$ 450 \\
 Jan.~01        & OVII  (f)  &  22.101    &  $<$0.43  &   -- & 0-width   & CVI $<$ 4300  \\ 
               & NeIX  (f)  & 13.699     &  $<$0.12  &   -- & 0-width    &             \\ 
               & OVII (gau) &  21.7    &  $<$0.85  &   -- & 0.55 &            \\
\par
\hline
            &  OVII  (r)  &  21.600     & 0.24 $\pm$ 0.16             & 17  & -- &     \\
            &  OVII  (i)  &  21.790     & 0.26$^{+0.26}_{-0.16}$    & 16  & -- &  OVII = 1500 $\pm$ 800 \\[0.5mm]
Jan.~05      &  OVII  (f)  &  22.101     & $<$0.20                   &  --  & -- &  CVI = 2500 $\pm$ 1800  \\ 
            &  NeIX (f)   & 13.699      & 0.10 $\pm$ 0.05             & 10  & -- &   $\Delta C$ stat = 23   \\[-4mm] 
 & & & & & &    \\
& OVII (gau)& 21.75$^{+0.23}_{-0.36}$ & 0.64 $\pm$ 0.53             & 18  & 0.60$^{+0.52}_{-0.35}$ &  \\[-3mm]\\
\hline 
\par
           & OVII (r)    &  21.600   &  $<$0.04    &  --  & -- &     \\  
           & OVII (i)    &  21.790   &  $<$0.25    &  --  & -- & OVII = 1860 $\pm$ 1000 \\  
July 05    & OVII (f)   &   22.101   &  $<$0.23    &  --  & -- & CVI = 2500 $\pm$ 2300 \\  
           & NeIX (f)   &   13.699   &  $<$0.15    &  --  & -- &  $\Delta C$ stat~=~15  \\           
           & OVII (gau) & 21.71 $\pm$ 0.23 & 0.51 $\pm$ 0.38 &  6 &  0.54$^{+0.57}_{-0.44}$   &       \\[-3mm]\\
\hline                           
\end{tabular}
\par
\tablefoot{\tablefoottext{1}{When $\Delta C$ stat $\le$3, the upper limits on the line flux are reported.}}
\vspace*{-1.05mm}
\end{table}