\begin{table}%t1
\par
\caption{\label{tab:ch}CH spectroscopic parameters for the $N = 1 \leftarrow 1$ transitions.}
\begin{tabular}{lcccccl}
\hline
\hline
\noalign{\smallskip}
Frequency & Transition $u\!\gets\!\ell$ & $A_{u\ell}$ & $E_u/k$ & $\int\tau {\rm d}V/N$\tablefootmark{a} & $V_{\rm off}$ \\
 MHz      & $J',F' \!\gets \!J'',F''$           & 10$^{-4}$ s$^{-1}$  & K &  $10^{-13}$ km~s$^{-1}$~cm$^2$ 
 & \kms \\ 
\hline
532721.68 & $3/2,1^+ \!\gets\! 1/2,1^- $     & $2.07 $ & 25.7 &  0.055  & 1.3   \\
532723.93 & $3/2,2^+ \!\gets\! 1/2,1^- $     & $6.21 $ & 25.7 &  0.275  & 0.0   \\
532793.31 & $3/2,1^+ \!\gets\! 1/2,0^- $     & $4.14 $ & 25.7 &  0.110  & $-39.0$  \\
536761.15 & $3/2,2^- \!\gets\! 1/2,1^+ $     & $6.38 $ & 25.8 &  0.276  & 0.0 \\
536781.95 & $3/2,1^- \!\gets\! 1/2,1^+ $     & $2.13 $ & 25.8 &  0.055  & $-11.6$ \\
536795.68 & $3/2,1^- \!\gets\! 1/2,0^+ $     & $4.25 $ & 25.8 &  0.111  & $-19.3$ \\
\hline 
\end{tabular}
\tablefoot{\tablefoottext{a}{Opacity integrated over the line profile per total \CH\ 
column  density, under the assumption that $T_{\rm ex} \ll E_u/k$.}}
\end{table}