\begin{table}%t3
\caption{Fitted CH$_3$CN$(5_K{-}4_K)$ line parameters.}
\small%\centerline
{
\begin{tabular}{lrr}
\hline \hline\noalign{\smallskip}
Line & $S_{\rm{peak}}$ & $\Delta v^b$ \\
     & [K] & [km~s$^{-1}$]\\
\hline
NGC~6334I, mm1 \\
%\hline
CH$_3$CN$(5_0{-}4_0)^a$ & 24.1 &$7.0 \pm 0.4$ \\
CH$_3$CN$(5_1{-}4_1)^a$ & 27.8 &$8.3 \pm 0.4$ \\
CH$_3$CN$(5_2{-}4_2)$   & 29.9 &$7.5 \pm 0.2$ \\
CH$_3$CN$(5_3{-}4_3)$   & 31.9 &$7.8 \pm 0.03$ \\
CH$_3$CN$(5_4{-}4_4)$   & 18.7 &$8.5 \pm 0.1$ \\
\hline      
NGC~6334I, mm2 \\
%\hline
CH$_3$CN$(5_0{-}4_0)^a$ & 25.6 &$5.1 \pm 0.3$ \\
CH$_3$CN$(5_1{-}4_1)^a$ & 26.9 &$5.3 \pm 0.3$ \\
CH$_3$CN$(5_2{-}4_2)$   & 27.3 &$5.3 \pm 0.1$ \\
CH$_3$CN$(5_3{-}4_3)$   & 28.8 &$5.8 \pm 0.1$ \\
CH$_3$CN$(5_4{-}4_4)$   & 11.9 &$6.9 \pm 0.2$ \\
\hline      
NGC~6334I(N), mm1 \\
%\hline
CH$_3$CN$(5_0{-}4_0)^a$ & 7.4 &$ 8.3 \pm 0.6$ \\
CH$_3$CN$(5_1{-}4_1)^a$ & 6.9 &$ 8.4 \pm 0.8$ \\
CH$_3$CN$(5_2{-}4_2)$   & 8.7 &$ 7.6 \pm 0.5$ \\
CH$_3$CN$(5_3{-}4_3)$   & 8.9 &$ 7.7 \pm 0.2$ \\
CH$_3$CN$(5_4{-}4_4)$   & 4.4 &$10.0 \pm 0.4$ \\
\hline      
NGC~6334I(N), mm2 \\
%\hline
CH$_3$CN$(5_0{-}4_0)^a$ & 5.6 &$ 6.6 \pm 1.0$ \\
CH$_3$CN$(5_1{-}4_1)^a$ & 5.7 &$ 3.9 \pm 0.5$ \\
CH$_3$CN$(5_2{-}4_2)$   & 4.6 &$ 6.5 \pm 0.5$ \\
CH$_3$CN$(5_3{-}4_3)$   & 4.5 &$ 6.0 \pm 0.3$ \\
CH$_3$CN$(5_4{-}4_4)$   & 1.0 &$10.9 \pm 1.6$ \\
\hline  
\end{tabular}}
\smallskip
 $^a$ The fits to the $K=0,1$ lines are less accurate because of the strong line blending of both components. \\
 $^b$ Full Width Half Maximum ({\it FWHM}).
\label{ch3cn}
\end{table}