\begin{table}%T2
\caption{\label{tab:2}Parameters of the observing run with IRAM PdBI.}
\small
%\centering
\par
\begin{tabular}{lcc}
\hline
\hline
Parameters & CO(1$-$0) & CO(2$-$1) \\
\hline\noalign{\smallskip}
central coordinates & \multicolumn{2}{c}{$\rm RA = 18^{h}11^{m}51.3^{s}$, $\rm Dec = +14^{\circ}58\arcmin 52.1{\arcsec}$} \\
redshift $z$ & \multicolumn{2}{c}{0.007662}\\
sky frequency [MHz] & 114.400 & 228.798\\
beam size [arcsec] & $2.48\times1.69$ & $0.91\times0.48$\\
position angle [degree] & 26 & 12\\
\hline
\end{tabular}
\end{table}