\begin{table}%t7
\caption{\label{prop}Derived properties of the observed knots using the extinction-corrected H$\alpha$ fluxes 
measured in the images from Gil de Paz et~al. (\cite{Gil2003}). }
%\centering
\par
\small
\begin{tabular}{c c c c c c c c}
\hline
\hline
ID & $R_{\rm eq}$ & $I$(H$\alpha$) & $L$(H$\alpha$) & $Q$(H$^{\circ}$) & $M_{\rm ion}$ & $M$(HII)  & {\it SFR} \\
  & (arcsec)    & (10$^{-14}$~erg~s$^{-1}$~cm$^{-2}$)  &  (10$^{38}$~erg~s$^{-1}$) &  (10$ ^{51}$~s$^{-1}$) & (10$^5$~$M_{\odot}$)  & (10$^4$~$M_{\odot}$)   &  $M_{\odot}$/yr\\
\hline
A  &  1.64 & 1.25  & 4.91 &   3.59 & 7.16 & 3.64 & 0.004 \\
B  &  2.94 & 4.83  & 19.0 & 13.9   & 27.6 & 14.1 & 0.015 \\
C  &  2.65 & 3.96  & 15.6 & 11.4   & 22.7 & 11.5 & 0.012 \\
D  &  1.43 & 1.10  & 4.33 & 3.16   & 6.31 & 3.21 & 0.003 \\      
\hline
\end{tabular}
\end{table}