\begin{table}%t4
\caption{\label{tab:3}Results of IRAM PdBI and PdBI+30~m telescope.}
\small
%\centering
\par
\begin{tabular}{lcc}
\hline
\hline
Parameters & PdBI & PdBI+30~m \\
\hline
\multicolumn{3}{l} {nucleus:}\\
$I_{\rm CO_{10}} [\rm Jy~km~s^{-1}]$ & 17.57 & 20.30\\ 
$I'_{\rm CO_{10}} [\rm K~km~s^{-1}]$ & 1.45 & 1.86 \\
$N({\rm H}_2)[{\rm cm}^{-2}]$ & $3.18 \times 10^{20}$ & $4.09 \times 10^{20}$ \\
$M_{{\rm H}_{2}}^{{\rm CO}_{10}}[M_\odot]$ & $1.05 \times 10^{8}$ & $1.18 \times 10^{8}$ \\[1mm]
$M_{{\rm H}_{2}+{\rm He}}^{{\rm CO}_{10}}[M_\odot]$ & $1.43\times10^{8}$ & $1.60 \times 10^{8}$\\[1mm]
\multicolumn{3}{l} {disk:}\\
$I_{{\rm CO}_{10}} [\rm Jy~km~s^{-1}]$ & 223 & 485\\ 
$I'_{{\rm CO}_{10}} [\rm K~km~s^{-1}]$ & 0.83 & 2.04  \\
$N({\rm H}_2)[{\rm cm}^{-2}]$ & $1.86 \times 10^{20}$& $4.47\times10^{20}$ \\
$M_{{\rm H}_{2}}^{{\rm CO}_{10}}[M_\odot]$ & $6.07 \times 10^{7}$ & $1.29\times10^{8}$ \\[1mm]
$M_{{\rm H}_{2}+{\rm He}}^{{\rm CO}_{10}}[M_\odot]$ & $8.26 \times 10^{7}$ & $1.74\times10^{8}$\\[1mm]
$M_{\rm gas}^{{\rm CO}_{10}}[M_\odot]$ & $2.04\times10^{9}$ & $2.13\times10^{9}$\\
\multicolumn{3}{l} {dynamical mass:}\\
$M_{\rm dyn}^{{\rm CO}_{10}}[M_\odot]$ & & $3.5 \times 10^{10}$  \\
\noalign{\smallskip}\hline\noalign{\smallskip}
$M_{\rm H_{I}}[M_\odot]$ & $1.44\times10^{9}$ & (Mirabel \& Sanders  \cite{Mirabel1988})\\
\noalign{\smallskip}\hline
\end{tabular}
\end{table}