\begin{table}%t2
\caption{\label{t:fits}\WAT, \WATET\ and \WATP\ fit results of velocity components associated with the massive star-forming clumps~W43 and~W51 shown in Figs.~\ref{fig:w43} and~\ref{fig:w51}.}
%\centering
\par
 \begin{tabular}{lrrrr}
 \hline\hline \noalign{\smallskip}
 Mol./Source & $T_{\rm ex}$ & $N/10^{12}$& $\Delta V$ & $V_{{\rm lsr}}$ \\ 
 & (K)  & (\cmsq) & (km~s$^{-1}$) & (km~s$^{-1}$) \\
\hline 
   \WAT /W43 MM1&  2.7 &   6.0 &  2.0 &   7.0 \\ 
                        &  2.7 &   9.0 &  2.0 &  10.5 \\ 
                        &  2.7 &   5.0 &  2.0 &  13.0 \\ 
                        &  2.7 &   3.0 &  2.0 &  66.5 \\ 
                        &  2.7 &   2.0 &  2.0 &  70.0 \\ 
                        &  2.7 &   7.5 &  2.0 &  78.0 \\ 
                        &  2.7 &   3.5 &  2.0 &  81.0 \\ 
                        &  5.0 &   3.0 & 20.0 &  87.0 \\ 
                        &  5.0 & 200.0 &  4.0 &  97.0 \\ 
 \WATET\                &  5.0 &   5.0 &  6.0 &  99.0 \\ 
  \WATP\                &  2.7 &   3.0 &  4.0 &   8.0 \\ 
                        &  2.7 &   1.2 &  4.0 &  11.5 \\ 
                        &  2.7 &   1.5 &  4.0 &  14.0 \\ 
                        &  2.7 &   3.0 &  2.0 &  64.5 \\ 
                        &  2.7 &   2.0 &  2.0 &  68.0 \\ 
                        &  2.7 &   1.0 &  2.0 &  78.0 \\ 
                        &  2.7 &   3.0 &  2.0 &  80.5 \\ 
                        &  5.0 &   6.0 &  4.0 &  96.0 \\ 
                        &  5.0 &  15.0 & 20.0 &  87.0 \\ 
   \WAT /W51N E1&  2.7 &   6.0 &  3.0 &   6.0 \\ 
                        &  2.7 &   1.0 &  5.0 &  11.0 \\ 
                        &  2.7 &   0.3 &  2.0 &  24.5 \\ 
                        &  2.7 &   3.5 &  1.0 &  45.0 \\ 
                        &  2.7 &   1.5 &  2.0 &  48.0 \\ 
                        &  5.0 & 400.0 &  5.0 &  57.5 \\ 
                        & 50.0 & 100.0 & 40.0 &  59.5 \\ 
                        &  2.7 & 250.0 &  7.0 &  64.0 \\ 
 \WATET\                &  5.0 &   3.0 &  5.0 &  57.5 \\ 
                        &  2.7 &   1.5 &  7.0 &  64.0 \\ 
  \WATP\                &  2.7 &   6.0 &  5.0 &   6.0 \\ 
                        &  2.7 &   2.0 &  5.0 &  11.0 \\ 
                        &  2.7 &   0.5 &  2.0 &  22.5 \\ 
                        &  2.7 &   0.3 &  1.0 &  45.0 \\ 
                        &  2.7 &   1.0 &  2.0 &  48.0 \\ 
                        &  5.0 &  17.0 & 20.0 &  50.0 \\ 
                        &  5.0 &   0.3 &  5.0 &  57.5 \\ 
                        &  2.7 &   4.0 &  4.0 &  64.0 \\ 
\hline
\end{tabular}
\end{table}