\begin{table}%t1
\caption{\label{tab:MeCN}Lower state quantum numbers of rotational transitions$^a$ 
of CH$_3$CN from present work, frequencies (MHz), uncertainties unc. (kHz), and 
residuals o$-$c (kHz) between observed frequencies and those calculated from 
the final set of spectroscopic parameters.}
\par
%\centerline
{
\small
\begin{tabular}{c r c r r}
\hline \hline
$J''$   & $K''$    & Frequency & unc. & o$-$c \\
\hline
 86 & 15 &  1584230.365 & 150 & $-$155 \\
 86 & 14 &  1585042.686 & 100 &     39 \\
 86 & 13 &  1585800.110 & 100 &      4 \\
 86 & 12 &  1586502.584 &  50 &  $-$32 \\
 86 & 11 &  1587149.953 &  50 &     35 \\
 86 & 10 &  1587741.807 &  50 &     39 \\
 86 &  9 &  1588277.964 &  50 &     22 \\
 86 &  8 &  1588758.221 &  50 &  $-$15 \\
 86 &  7 &  1589182.509 &  50 &     44 \\
 86 &  6 &  1589550.454 &  50 &  $-$11 \\
 86 &  5 &  1589862.092 &  50 &   $-$2 \\
 86 &  4 &  1590117.262 &  50 &     32 \\
 86 &  3 &  1590315.822 &  50 &     50 \\
 86 &  2 &  1590457.643 &  50 &   $-$1 \\
 86 &  1 &  1590542.824 &  50 &     34 \\
 86 &  0 &  1590571.147 &  50 &  $-$28 \\
 87 &  9 &  1606303.437 & 100 &     75 \\
 87 &  8 &  1606788.347 &  50 &     71 \\
 87 &  7 &  1607216.562 &  50 &  $-$25 \\
 87 &  6 &  1607588.178 &  50 &     50 \\
 87 &  5 &  1607902.790 &  50 &     35 \\
 87 &  4 &  1608160.351 &  50 &      6 \\
 87 &  3 &  1608360.834 &  50 &     36 \\
 87 &  2 &  1608504.060 &  50 &     25 \\
 87 &  1 &  1608590.002 &  50 &      3 \\
 87 &  0 &  1608618.661 &  50 &      3 \\
 88 & 10 &  1623774.391 &  50 &      9 \\
 88 &  9 &  1624320.812 &  50 &  $-$33 \\
 88 &  8 &  1624810.328 &  50 &  $-$27 \\
 88 &  7 &  1625242.737 &  50 &     13 \\
 88 &  6 &  1625617.728 &  50 &  $-$56 \\
 88 &  5 &  1625935.334 &  50 &  $-$57 \\
 88 &  4 &  1626195.369 &  50 &  $-$52 \\
 88 &  3 &  1626397.725 &  50 &  $-$47 \\
 88 &  2 &  1626542.355 &  50 &  $-$11 \\
 88 &  1 &  1626629.131 &  50 &  $-$14 \\
 88 &  0 &  1626658.067 &  50 &   $-$7 \\
\hline
\end{tabular}}
\medskip
\par
$^a$ Transitions are $J'' +1, K'' \leftarrow J'', K''$ for all isotopologs 
except for CH$_2$DCN.
\end{table}