\begin{table}%t3
\caption{\ace\ line parameters (IRAM-30~m observations).}
\label{aceres}
%\centering
\par
\begin{tabular}{lccccccc}
\hline \hline\\[-3mm]
Line  & rms & $v_{\rm LSR}$ &  $\Delta v_{1/2}$ &  \multicolumn{4}{c}{$\int T_{\rm MB}{\rm d}v$ (K \kms)}  \\
\cline{5-8}
          & (K) &  (\kms)  &  (\kms)     & $K=0$ & 1 & 2 & 3  \\
\hline
\ace\ (6--5) & 0.011  & $-50.3$ & 2.48   & 0.37 & 0.29 & 0.13 & 0.07 \\
\ace\ (8--7) &  0.024 & $-50.5$  & 2.64   & 0.41 & 0.40 & 0.22 & 0.13 \\
\ace (13--12) & 0.032 &  $-50.5$ & 2.57  &  0.75 & 0.71 & 0.41 & 0.30 \\
\hline
\end{tabular}
\end{table}