Approximately,
\[
\begin{alignedat}{4}
A^\prime_{\mathbf{1a}}&{}\approx{}&-0.120409044417&{}:{}&0.427958173665&{}:{}&0.692450870753&,\\B^\prime_{\mathbf{1a}}&{}\approx{}&-0.101689070346&{}:{}&0.937152698242&{}:{}&0.164536372104&,\\C^\prime_{\mathbf{1a}}&{}\approx{}&-1.260073510670&{}:{}&1.260073510670&{}:{}&1.000000000000&,
\\
A^{\prime\prime}_{\mathbf{1a}}&{}\approx{}&-0.188190960236&{}:{}&0.961266679393&{}:{}&0.226924280842&,\\B^{\prime\prime}_{\mathbf{1a}}&{}\approx{}&-0.409342438319&{}:{}&0.638920185343&{}:{}&0.770422252976&,\\C^{\prime\prime}_{\mathbf{1a}}&{}\approx{}&-0.105283192248&{}:{}&0.839390426438&{}:{}&0.265892765810&,
\\
A^{\prime\prime\prime}_{\mathbf{1a}}&{}\approx{}&-0.110994332240&{}:{}&1.022908731440&{}:{}&0.088085600801&,\\B^{\prime\prime\prime}_{\mathbf{1a}}&{}\approx{}&-0.186052248131&{}:{}&0.661267438022&{}:{}&0.524784810110&,\\C^{\prime\prime\prime}_{\mathbf{1a}}&{}\approx{}&-0.026662490618&{}:{}&0.873331277549&{}:{}&0.153331213069&,
\\
A^*_{\mathbf{1a}}&{}\approx{}&0.000000000000&{}:{}&1.309016994375&{}:{}&-0.309016994375&,\\B^*_{\mathbf{1a}}&{}\approx{}&-0.951056516295&{}:{}&0.000000000000&{}:{}&1.951056516295&,\\C^*_{\mathbf{1a}}&{}\approx{}&0.103197753333&{}:{}&0.896802246667&{}:{}&0.000000000000&.
\end{alignedat}
\]