\begin{table}%t4
\caption{Hydrostatic models solution fits for disk-averaged lines. S and F stand for the
\citet{spencer05} and \citet{feaga07} SO$_2$~distribution models.}
\label{linemod} 
\par
\small%\centerline
 {
\begin{tabular}{lllll}
\hline \hline
Date     &   Lead/   &     Gas model & Gas temperature &  Horizontal \\
         &    Trail          &               &    (K)      & wind (m/s)\\
\hline
9/10/1999 & L    & S & 128& 0$^1$   \\
9/10/1999 & L   &  S   & 130 &180\\
25/10/1999 & L    & S  & 140 & 0$^1$    \\
25/10/1999 & L    & S  & 150 & 270\\
28/01/2005 & L &     S & 157 & 0$^1$    \\
28/01/2005 & L &     S & 166 & 200 \\
9/10/1999 & L &    F & 147 & 0$^1$    \\
9/10/1999 & L     &  F x 3 & 132 & 0$^1$    \\
9/10/1999 & L     &  F x 3 & 135 & 170 \\
25/10/1999 & L & F x 3 &  145  & 0$^1$    \\
25/10/1999 & L &    F x 3 & 150 & 200 \\
28/01/2005 & L & F x 3 & 165 & 0$^1$    \\
28/01/2005 & L & F x 3 &  175 & 200 \\
10/10/1999 & T & S & 136 & 0$^1$    \\
10/10/1999 & T &  S x 0.2 & 150 & 0$^1$    \\
10/10/1999 & T &  S x 0.4 & 165 & 300 \\
26/10/1999 & T & S x 0.2  & 165   &  0$^1$     \\
26/10/1999 & T & S x 0.3 &175  &  250  \\
05/02/2005 & T &  S x 0.4   &  150  &   0$^1$    \\
05/02/2005 & T & S x 0.4 & 160 & 200 \\
10/10/1999 & T & F & 152 & 0$^1$    \\
10/10/1999 & T &  F x 0.7 & 160 & 0$^1$    \\
10/10/1999 & T &  F x 1.3 & 155 & 220 \\
26/10/1999 & T & F x 0.5 & 190 & 0$^1$    \\
26/10/1999 & T & F x 0.9 & 180 & 250 \\
05/02/2005 & T &  F x 1.3  & 150   &  0$^1$    \\
05/02/2005 & T & F x 1.3 & 155 & 200 \\
\hline
\end{tabular}}
\smallskip
$^1$ Assumed.
\end{table}