\begin{table}%t5
\caption {C$^{18}$O (\juz), and HC$_3$N (\jdo) line and physical parameters toward the
continuum peak position of OVRO~2 in L1206}
\label{table_lines}
%\centerline
{\begin{tabular}{lcccccc}
\hline\hline\noalign{\smallskip}
\multicolumn{1}{c}{Molecule \&} &
\multicolumn{1}{c}{\Vlsr} &
\multicolumn{1}{c}{{\it FWHM}}  &
\multicolumn{1}{c}{$T_{\rm B}$} &
\multicolumn{1}{c}{$\int{T_{\rm B}~{\rm d}V}$} &
\multicolumn{1}{c}{$\theta^a$} &
\multicolumn{1}{c}{$M_{\rm vir}^b$}
\\
\multicolumn{1}{c}{transition} &
\multicolumn{1}{c}{(km s$^{-1}$)} &
\multicolumn{1}{c}{(km s$^{-1}$)} &
\multicolumn{1}{c}{(K)} &
\multicolumn{1}{c}{(K km s$^{-1}$)} &
\multicolumn{1}{c}{(arcsec)} &
\multicolumn{1}{c}{($M_\odot$)} 
\\
\hline\noalign{\smallskip}
C$^{18}$O (\juz) &$-10.74\pm0.02$ &$2.34\pm0.04$ &$2.94\pm0.31$ &$7.31\pm0.13$ &$8.8$ &10.6--14.2 \\
HC$_3$N (\jdo) &$-10.86\pm0.03$ &$1.83\pm0.07$ &$2.68\pm0.10$ &$5.22\pm0.17$ &$11.4$ &13.4--17.8 \\
\hline
\end{tabular}}\medskip
\par
$^a$  Deconvolved geometrical mean of the major and minor axes of the half-peak intensity contour. 
$^b$ Estimated from Eq.~(\ref{virial}) for typical density distributions with $p=2.0$--1.5.
%(c) Computed from the integrated line intensity. \\
%(d) Measured with the command print area of CLASS. \\ 
%(e) Bad fit because of non-Gaussian profile.  
\end{table}