\begin{table}%T2
\par
\caption{Correlations between CO, \ion{H}{i} and $175~\mu$m.}
\label{tab:correl}
%\centerline
{\small$$
\begin{tabular}{llcr@{$~\pm~$}lr@{$~\pm~$}lr@{$~\pm~$}lc}
\hline\hline
%\noalign{\smallskip}
$X$    &$Y$  &$\Delta R$  &\multicolumn{4}{c}{$\log Y=a\log X+b^{1)}$}
       &\multicolumn{2}{c}{Correl.} &$N^{1)}$\\
       & & (\arcmin ) &\multicolumn{2}{c}{a} &\multicolumn{2}{c}{b}
       &\multicolumn{2}{c}{coeff. $\rho$}\\
%\noalign{\smallskip}
\hline%\noalign{\smallskip}
${I_{\ion{H}{i}}}^a$  &${I_{1-0}}^a$ &\pheins 0--35 &2&5 &$-$5&20
     &0.3&0.1 &\pheins 90\\
  & &35--60 &1.7&1.0 &$-$5.2&2.4
     &0.61&0.04 &234\\
     &   &\pheins 0--60 &1.3&0.5 &$-$4.1&1.4 &0.50&0.04 &324\\
%\noalign{\smallskip}
${I_{175}}^b$    &${I_{1-0}}^a$ &\pheins 0--35  &1.6&1.1 &$-$2.53&0.63
     &0.56&0.07 &\pheins 94\\
  & &35--60 &1.57&0.20
     &$-$2.39&0.16 &0.81&0.02 &234\\
     & &\pheins 0--60  &1.60&0.22 &$-$2.47&0.16 &0.75&0.02 &328\\
%\noalign{\smallskip}
${I_{175}}^b$    &${I_{\ion{H}{i}}}^a$  &\pheins 0--35  &0.8&1.8 &1.4&2.2
     &0.51&0.07 &125\\
  & &35--60 &0.84&0.27
     &1.85&0.44 &0.75&0.03 &264\\
     & &\pheins 0--60 &1.09&0.32 &1.36&0.42 &0.54&0.04 &388\\
%\noalign{\smallskip}
${I_{175}}^b$    &${N_{\rm gas}}^c$ &\pheins 0--35   &1.42&0.53 &0.89&0.60
     &0.68&0.05 &134\\
  & &35--60
     &1.12&0.14 &1.64&0.22 &0.85&0.02 &263\\
     & &\pheins 0--60 &1.23&0.19 &1.27&0.27 &0.67&0.03 &395\\
%\noalign{\smallskip}
\hline
%\noalign{\smallskip}
\end{tabular}$$}
\medskip
$^{1)}$ Weighted fits of the bisector through $N$
pairs of (log~$X$, log~$Y$), where $N$ is the number  of independent points (Isobe et~al. 
\cite{isobe+90}; Nieten  \cite{nieten01}). $^a$ $\rm (K\kms )$; $^b$ $\rm (MJy~ sr^{-1})$; $^c$ $\rm (10^{18}~ at~ cm^{-2})$.
\end{table}