\begin{table}%t8
%\centering
\par
\caption{\label{mass-doublehorn}Molecular mass gas of the galaxies that exhibit a double horn profile.}
	\begin{tabular}{lc}
		\hline\hline\noalign{\smallskip}
		\textbf{Galaxy} & \textbf{$M_{{\rm H}_2}$}\\
&  ($\times10^8~M_\odot$)\\
		\hline
		3CR 31    & 16.81 $\pm$ 2.38 \\
		3CR 264   & 3.37  $\pm$ 0.74 \\
		3CR 403   & 4.75  $\pm$ 1.18 \\
		3CR 449   & 3.59  $\pm$ 0.73 \\
		NGC 3801  & 5.49  $\pm$ 1.63 \\
		NGC 7052  & 1.96  $\pm$ 0.41 \\
		B2 0116+31& 60.63 $\pm$ 16.92 \\
		OQ 208    & 136.51$\pm$ 17.94 \\
		\hline
		\textbf{Average value:} & 29.14 $\pm$ 5.24 \\
		\hline
	\end{tabular} 
\end{table}