\begin{table}%T6
  \caption{\label{tab:Aap}Observational parameters used in the two-component 
 external shock model.}
 \small%\centering
\par
  \begin{tabular}{lll}
     \hline \hline\noalign{\smallskip}
results & GRB~071112C           & GRB~080506   \\ 
\hline
 $A$   & 3.5                    & 15         \\
 $a$   & $<$0.07               & $<$0.14       \\
 $p$   & 1.66  ($\pm$0.10)      & 2.70 ($\pm$0.34)       \\
 $p^\prime$  & 1.24 ($\pm$0.26) & 2.92  ($\pm$0.20)     \\
\hline
   \end{tabular} 
\end{table}