\begin{table}%t2
%\centering
\par
\caption{Parameters of the HI structures related to the WR stars.\label{parameters}}
\begin{tabular}{lcccc}
\hline\hline
Parameter & \multicolumn{2}{c}{WR~126} &  WR~154 & WR155\\
& Cavity~2 & Dual-lobe &  &  \\
\hline
Longitude of the SC (deg)& $61\fdg9 $ & $61\fdg9$ & $103\fdg7$ & $105\fdg4$\\
Latitude of the SC (deg) & $2\fdg2$ & $2\fdg25$ & $-1\fdg3$ & $-1\fdg2$\\
Systemic velocity $V_{\rm sys}$ (\kms) & 23 & 23 & $-29$ & $-29$\\
Velocity extent (\kms) & 8 & 8 & 9 & 9\\
Kinematical distance ($d_{\rm k}$) (kpc)& 2.6 & 2.6 & 2.0 & 2.0\\
Major axis ($d_{\rm M}$) (pc) & 18 & 27 & 15 & 13\\
Minor axis ($d_{\rm m}$) (pc) & 9 & 9 & 10 & 10\\
Axial ratio ($C_{\rm ax}$) & 2 & 3 & 1.5 & 1.3\\
Offset parameter ($C_{\rm off}$) & 0.5 & 0.8 & 0.7 & 0.5\\
Missing HI mass ($M_{\rm HI}^{\rm miss}$) ($M_{\odot})$ & 45  & 50 & 85 & 60\\
Missing HI density ($n_{\rm HI}^{\rm miss}$) (cm$^{-3}$) & 2.5 & 2.0 & 4.5 & 4.0\\
\hline %\\
\end{tabular}
\end{table}