\begin{table}%T4
 \caption{\label{tab4}Calculated oscilator strengths for all CH
cation $A- X$~transitions. Description is presented in the text.}
\small%\centering
\par
\begin{tabular}{rrrrrrr}
\hline\hline
($\nu\arcmin$, $\nu\arcsec$) $\lambda$ & $f$   &   $f$($\nu\arcmin$,~0)/$f$(0,~0)    &   $q$($\nu\arcmin$,~0)/$q$(0,~0)  & $f^{\rm Lit}$&  $f$($\nu\arcmin$,~0)/$f$(0,~0)$^{\rm Lit}$ & $q$($\nu\arcmin$,~0)/$q$(0,~0)$^{\rm H68}$  \\
        &      [10$^{-5}$]         &                       &                        &     [10$^{-5}$]          &                             \\
         \hline\noalign{\smallskip}
  (0,~0) 4232  &   545$^{\rm L83}$         &   1   &       1          &  545$^{\rm L83}$, 566~$\pm$~20$^{\rm M81}$, 645$^{\rm Y73}$, 743$^{\rm E77}$        & 1.000$^{\rm H68}$  & 1.000  \\
(1,~0) 3957  &   342~$\pm$~6    &   0.628~$\pm$~0.010 &   0.587~$\pm$~0.009 &  331$^{\rm L83}$, 431$^{\rm Y73}$, 426$^{\rm E77}$  & 0.555$^{\rm H68}$, 0.548$^{\rm F72}$   &  0.533      \\
(2,~0) 3745  &   172~$\pm$~9   &   0.316~$\pm$~0.017 &   0.279~$\pm$~0.008 &  173$^{\rm Y73}$, 170$^{\rm E77}$               & 0.335$^{\rm H68}$       & 0.197\\
(3,~0) 3579  &   75~$\pm$~8    &   0.138~$\pm$~0.008 &   0.116~$\pm$~0.006 &   63$^{E77}$                            &0.189$^{\rm H68}$        & 0.068    \\
(4,~0) 3447  &   40~$\pm$~5    &   0.073~$\pm$~0.003 &   0.0059~$\pm$~0.0010&            --                  &0.082$^{\rm H68}$            & 0.026\\
 \hline
\end{tabular}
\end{table}