\begin{table}%t4
\caption{\label{Table4}Average outer extent of the core and counts radius regions in~kpc.}
%%\centering

\small
\begin{tabular}{ c c c c c }
\hline\hline
 \multicolumn{5}{c } {Outer extent of
region in kpc}\\ 
\multicolumn{1}{ c  }{ radius} & \multicolumn{1}{c }{region \#1} & \multicolumn{1}{ c  }{ region \#2} &
\multicolumn{1}{c }{ region \#3} & \multicolumn{1}{c }{region \#4 } \\
\hline
Core & 87 & 173 & 260 & 347 \\ 
Counts & 84 & 177 & 314 & 607 \\ 
\hline
\end{tabular}
\end{table}