\begin{table}%t2
\caption{\label{tbl:reff}Peak and effective radii of the \Ha\ and $R$-band mean profiles,
in units of the $R_{24}$ isophotal radius; and the mean value of this
radius, in kpc, all listed as a function of $T$-type.}
\small%\centering
\par
\begin{tabular}{cccccc}
\hline \hline $T$-type & \Ha\ $r_{\rm peak}$  & $R~r_{\rm peak}$ & 
\Ha\ $r_{\rm eff}$ & $R~r_{\rm eff}$ & $\langle r_{24}\rangle $\\
\hline 
0  & 0.04 & 0.08 & 0.35 & 0.33 &  7.0 \\ 
1  & 0.12 & 0.08 & 0.26 & 0.31 & 10.5 \\ 
2  & 0.10 & 0.15 & 0.26 & 0.33 &  9.1 \\ 
3  & 0.04 & 0.06 & 0.41 & 0.37 &  9.0 \\ 
4  & 0.34 & 0.12 & 0.39 & 0.37 & 10.6 \\ 
5  & 0.34 & 0.22 & 0.47 & 0.41 &  8.2 \\ 
6  & 0.34 & 0.32 & 0.53 & 0.50 &  7.2 \\ 
7  & 0.52 & 0.26 & 0.59 & 0.53 &  5.8 \\ 
8  & 0.34 & 0.34 & 0.54 & 0.55 &  4.9 \\ 
9  & 0.62 & 0.42 & 0.86 & 0.73 &  3.0 \\ 
10 & 0.46 & 0.42 & 0.75 & 0.73 &  1.8 \\ 
\hline 
\end{tabular} 
\end{table}