\begin{table}%t1
\caption{Temporal properties of the pulses in GRB~040106.}
\label{tim}
%\centering
\par
  \begin{tabular}{p{0.25\linewidth}ccc}
       \hline \hline
         Parameters  &  Rise time, $t_{\rm r}$  &  Fall time, $t_{\rm f}$ & {\it FWHM}\\
     &  (s)  &  (s) &  (s)  \\
            \hline 
            1st pulse & 4 & 10 & 5  \\
        2nd pulse & 10 & 6 & 5\\
            \hline
         \end{tabular}
\end{table}