\begin{table}%t8
\caption{The same parameters as shown in Table~\ref{tabenvol}, but the logarithmic \ha~luminosity is given by the fraction of the logarithmic \ha~luminosity of the catalogue corresponding to the most intense Gaussian peak.}\label{tabenvolfrac}
%\centering
\par
\begin{tabular}{lcc}
\hline
\hline
             & Bin & Envelope fit   \\
             \hline
     NGC~1530 & 0.15 & log~$L_{\scriptsize\ha} \sim (36.1 \pm 0.2)+(2.4 \pm 0.2)~\log~\rm\sigma_{nt}$ \\
     NGC~3359 & 0.15 & log~$L_{\scriptsize\ha} \sim (37.4 \pm 0.2)+(1.5 \pm 0.7)~\log~\rm\sigma_{nt}$ \\
     NGC~6951 & 0.15 & log~$L_{\scriptsize\ha} \sim (37.7 \pm 0.4)+(1.2 \pm 0.4)~\log~\rm\sigma_{nt}$ \\
 All galaxies & 0.15 & log~$L_{\scriptsize\ha} \sim (37.5 \pm 0.1)+(1.57 \pm 0.07)~log~\rm\sigma_{nt}$ \\            
\hline  
\end{tabular}
\end{table}