\begin{table}%t1
\caption{\label{tab:setting}Telescope settings.}
%\centering
\par
\begin{tabular}{ccccc}
\hline\hline\noalign{\smallskip}
Line&Frequency&Beam size& \multicolumn{2}{c}{Sampling}\\
&(MHz)&(\arcsec)&(kHz)&m~s$^{-1}$\\
\hline
\nddpb\juz&77~109.616\tablefootmark{a}&32&6&23\\
\ndhpb\ \juz&93~173.764\tablefootmark{a}&27&10&32\\
\cdhob\ \juz&109~782.176&23&10&27\\
\tzcob\ \juz&110~201.360&23&20&54\\
\cdsob\ \juz&112~358.982\tablefootmark{b}&23&10&27\\
\cdhob\ \jdu&219~560.358&12&40&54\\
\hline
\end{tabular}
\tablefoot {\tablefoottext{a}{New frequency for the main $J_{\rm FF\arcmin}$:1$_{23} \rightarrow$ 0$_{12}$~hyperfine component from \citet{2008arXiv0811.3289P}.} \\
\tablefoottext{b}{$J_{\rm F}$:1$_{7/2}$--0$_{5/2}$ transition from \citet{2003ApJ...582..262K}.}}
\vspace*{-2mm}
\end{table}