Approximately,
\[
\begin{alignedat}{4}
A^\prime_{\mathbf{6a}}&{}\approx{}&1.055161460168&{}:{}&-0.021069802915&{}:{}&-0.034091657253&,\\B^\prime_{\mathbf{6a}}&{}\approx{}&7.955791036595&{}:{}&5.916949268008&{}:{}&-12.872740304603&,\\C^\prime_{\mathbf{6a}}&{}\approx{}&0.642039521920&{}:{}&-0.642039521920&{}:{}&1.000000000000&,
\\
A^{\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.188190960236&{}:{}&-0.152249685018&{}:{}&-0.035941275217&,\\B^{\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.042034819518&{}:{}&-0.040800651367&{}:{}&-0.001234168150&,\\C^{\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.073388543238&{}:{}&-0.005385325770&{}:{}&-0.068003217469&,
\\
A^{\prime\prime\prime}_{\mathbf{6a}}&{}\approx{}&0.302914176007&{}:{}&0.225285933699&{}:{}&0.471799890295&,\\B^{\prime\prime\prime}_{\mathbf{6a}}&{}\approx{}&0.988989512303&{}:{}&-0.019748460208&{}:{}&0.030758947905&,\\C^{\prime\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.017768622871&{}:{}&0.015114893409&{}:{}&-0.032883516280&,
\\
A^*_{\mathbf{6a}}&{}\approx{}&0.000000000000&{}:{}&1.309016994375&{}:{}&-0.309016994375&,\\B^*_{\mathbf{6a}}&{}\approx{}&0.951056516295&{}:{}&0.000000000000&{}:{}&0.048943483705&,\\C^*_{\mathbf{6a}}&{}\approx{}&1.278768257918&{}:{}&-0.278768257918&{}:{}&0.000000000000&.
\end{alignedat}
\]