\newcommand{\Pop}{6-31+G(d)}
\newcommand{\AVDZ}{aug-cc-pVDZ}
\newcommand{\AVTZ}{aug-cc-pVTZ}
\newcommand{\DAVTZ}{d-aug-cc-pVTZ}
\newcommand{\AVQZ}{aug-cc-pVQZ}
\newcommand{\DAVQZ}{d-aug-cc-pVQZ}
\newcommand{\TAVQZ}{t-aug-cc-pVQZ}
\newcommand{\AVFZ}{aug-cc-pV5Z}
\newcommand{\DAVFZ}{d-aug-cc-pV5Z}
\newcommand{\ra}{\rightarrow}
\newcommand{\pis}{\pi^\star}
\newcommand{\si}{\sigma}
\newcommand{\sis}{\sigma^\star}
\newcommand{\nO}{n_\text{O}}
\newcommand{\nN}{n_\text{N}}

\begin{dfbOptions}
  \format{DoubleTBE}
  \suffix{double}
\end{dfbOptions}

\begin{tabular}
	Molecule		&	Transition												&	\multicolumn{2}{c}{Reference}			&	\multicolumn{2}{c}{Correction}				&	\multicolumnc{TBE}	\\
					&															&	Level R/SB						&	$\Delta E_\text{R/SB}$			
																				&	Level C/LB						&	$\Delta E_\text{C/LB} - \Delta E_\text{C/SB}$				&\\
	Acrolein		&	$1\,^1A^\prime \ra 3\,^1A^\prime$				&	FCI/6-31+G(d)					&	8.00	&	CC3/AVTZ		&	-0.13	&	7.87	\\
	Benzene			&	$1\,^1A_{1g} \ra 1\,^1E_{2g}$				&	FCI/6-31+G(d)					&	8.40	&	CC3/AVTZ		&	-0.12	&	8.28	\\
					&	$1\,^1A_{1g} \ra 2\,^1A_{1g}$				&	XMS-CASPT2/AVQZ					&	10.54	&	\cdash			&	\cdash	&	10.54	\\
	Beryllium		&	$1\,^1S \ra 1\,^1D$					&	Ref.~\onlinecite{Galvez_2002}	&	7.06	&	\cdash			&	\cdash	&	7.06	\\
	Butadiene		&	$1\,^1A_g \ra 2\,^1A_g$				&	FCI/AVDZ						&	6.51	&	CC3/AVQZ		&	-0.01	&	6.50	\\
	Carbon dimer	&	$1\,^1\Sigma_g^+ \ra 1\,^1\Delta_g$	&	FCI/AVQZ						&	2.06	&	\cdash			&	\cdash	&	2.06	\\
					&	$1\,^1\Sigma_g^+ \ra 2\,^1\Sigma_g^+$	&	FCI/AVQZ						&	2.40	&	\cdash			&	\cdash	&	2.40	\\
	Carbon trimer	&	$1\,^1\Sigma_g^+ \ra 1\,^1\Delta_g$	&	FCI/AVQZ						&	5.23	&	\cdash			&	\cdash	&	5.23	\\
					&	$1\,^1\Sigma_g^+ \ra 2\,^1\Sigma_g^+$	&	FCI/AVQZ						&	5.86	&	\cdash			&	\cdash	&	5.86	\\
	Ethylene		&	$1\,^1A_g \ra 2\,^1A_g$				&	FCI/AVTZ						&	12.92	&	CC3/AVQZ		&	-0.36	&	12.56	\\
	Formaldehyde	&	$1\,^1A_1 \ra 3\,^1A_1$				&	FCI/AVTZ						&	10.35	&	CC3/AVQZ		&	-0.01	&	10.34	\\
	Glyoxal			&	$1\,^1A_g \ra 2\,^1A_g$				&	FCI/AVDZ						&	5.48	&	CC3/AVQZ		&	+0.06	&	5.54	\\
	Hexatriene		&	$1\,^1A_g \ra 2\,^1A_g$				&	CC3/AVDZ						&	5.77	&	PC-NEVPT2/AVQZ	&	-0.02	&	5.75	\\			
	Nitrosomethane	&	$1\,^1A^\prime \ra 2\,^1A^\prime$				&	FCI/AVTZ						&	4.76	&	CC3/AVQZ		&	-0.02	&	4.74	\\
	Nitroxyl		&	$1\,^1A^\prime \ra 2\,^1A^\prime$				&	FCI/AVQZ						&	4.32	&	\cdash			&	\cdash	&	4.32	\\
	Pyrazine		&	$1\,^1A_g \ra 2\,^1A_g$				&	PC-NEVPT2/AVQZ					&	8.04	&	\cdash			&	\cdash	&	8.04	\\
					&	$1\,^1A_g \ra 3\,^1A_g$				&	CC3/AVTZ						&	8.69	&	PC-NEVPT2/AVQZ	&	+0.00	&	8.69	\\	
	Tetrazine		&	$1\,^1A_g \ra 2\,^1A_g$				&	PC-NEVPT2/AVQZ					&	4.60	&	\cdash			&	\cdash	&	4.60	\\	
					&	$1\,^1A_g \ra 1\,^1B_{3g}$				&	PC-NEVPT2/AVQZ					&	6.14	&	\cdash			&	\cdash	&	6.14	\\	
					&	$1\,^1A_g \ra 1\,^3B_{3g}$				&	PC-NEVPT2/AVQZ					&	5.51	&	\cdash			&	\cdash	&	5.51	\\	
\end{tabular}