\begin{table}%t5
%\footnotesize
\caption {\label{tab:g2models}Comparison of maximum likelihood model fitting results after inclusion of
the source~G2 in the background model.}
%\centerline
 {\begin{tabular}{lccc}
\hline\hline
\noalign{\smallskip}
Model & TS$^\prime$ & Significance & $p$ \\
\hline
$N'(\hi)$ (optically thin) & 173.1 & 12.9 & 2 \\
$N'(\hi)$ (D+L components) & 194.1 & 13.7 & 2 \\
$N'(\hi)$ ($T_s=125$~K) & 175.4 & 13.0 & 2 \\
$N'(\hi)$ ($T_s=60$~K) & 180.0 & 13.2 & 2 \\
$N'(\hi)$ ($T_s=40$~K) & 178.4 & 13.1 & 2 \\
$N'(\hmol)$ & 197.0 & 13.9 & 2 \\
$N'(\hii)$ & 284.9 & 16.7 & 2 \\
$N'({\rm H})$ & 183.7 & 13.3 & 2 \\
$N'(\hi)+N'(\hmol)+N'(\hii)$ & 284.9 & 16.1 & 6 \\
\hline
\end{tabular}}
\tablefoot {Columns are identical to those in Table~\ref{tab:models}.}
\end{table}