\begin{table}%T1
\caption{\label{table:1}Physical parameters of the analysed flares.}  
\small
%\centerline
{
\begin{tabular}{c c c c c c c c c}  
\hline\hline  
Event     & Time of & \emph{GOES}    & \emph{GOES}         &$\gamma$ & $a_0$                & $E_{\rm c}$ &  $S$              & $L_0$        \\  
date      & maximum & class   & incremental  &         &                     &       &                  &              \\
          & [UT]    &         & class        &         & [ph/cm$^2$/s/keV] & [keV] & [$10^{17}$~cm$^2$] & [10$^{8}$~cm] \\
 \hline\noalign{\smallskip}
16-Dec.-91 & 04:58   & M~2.8    & M~2.7         & 3.61    & $7.57\times 10^{6}$ & 25.8   & 3.85             &  15.40       \\
02-Feb.-92 & 11:34   & C~5.5    & C~2.7         & 2.97    & $2.40\times 10^{5}$ & 18.9   & 2.30             &  09.75       \\
27-Jul.-00 & 04:10   & M~2.5    & M~2.4         & 3.20    & $4.79\times 10^{5}$ & 19.8   & 2.31             &  08.69       \\
\hline 
\end{tabular}}
\smallskip 
  $\gamma$ -- photon spectral index; $E_{\rm c}$ -- low energy cut-off; $a_0$ -- scaling factor (flux at~1~keV); \\
 $S$ and $L_0$ -- cross-section and semi-length of the flaring loop.
\end{table}