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\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}