\newcommand{\titou}[1]{\textcolor{purple}{#1}}
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\newcommand{\eg}{\textit{e.g.}}
\newcommand{\ie}{\textit{i.e.}}
\newcommand{\EFCI}{E_\text{FCI}}
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\newcommand{\ESCI}{E_\text{SCI}}
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\newcommand{\PsiSCI}{\Psi_\text{SCI}}
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\newcommand{\ex}[6]{$^{#1}#2_{#3}^{#4}(#5 \ra #6)$}
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\newcommand{\IneV}[1]{#1 eV}
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\newcommand{\LCPQ}{Laboratoire de Chimie et Physique Quantiques, CNRS et Universit\'e Toulouse III - Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, France}
\newcommand{\CEISAM}{Universit\'e de Nantes, CNRS,  CEISAM UMR 6230, F-44000 Nantes, France}
\newcommand{\Pisa}{Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy}

\begin{tabular}{l|p{.5cm}p{1.0cm}p{1.2cm}p{1.4cm}|p{.5cm}p{1.0cm}p{1.2cm}p{1.4cm}|p{.5cm}p{1.0cm}p{1.2cm}|p{.5cm}|p{.5cm}|p{.6cm}p{.6cm}}
  & \multicolumn{14}{c}{Cyanogen}\\
  & \multicolumn{4}{c}{\Pop} & \multicolumn{4}{c}{\AVDZ}& \multicolumn{3}{c}{\AVTZ} &  \multicolumn{1}{c}{\AVQZ} &  \multicolumn{1}{c}{\AVPZ} & \multicolumn{1}{c}{Litt.}\\
State 	& {\CCT} & {\CCSDT} & {\CCSDTQ}  & {\FCI} & {\CCT} & {\CCSDT} & {\CCSDTQ}  & {\FCI}& {\CCT} & {\CCSDT}   & {\NEV}& {\CCT} & {\CCT}& Exp.$^d$ \\
\hline
$^1\Sigma_u^-$ 		&6.62&6.63&6.62&6.58$\pm$0.03	&6.52&6.52&6.51&6.44$\pm$0.08	&6.39&6.40&6.32&	6.38	&6.38	&5.63\\
$^1\Delta_u$ 			&6.88&6.89&6.88&6.87$\pm$0.02	&6.77&6.78&6.77&6.74$\pm$0.04	&6.66&6.67&6.66&	6.64	&6.64	&5.99\\
$^3\Sigma_u^+$		&4.92&4.92&4.94&4.91$\pm$0.06	&4.89&4.89&	   &4.87$\pm$0.07	&4.90&4.89&4.88&	4.91	&4.91	&4.13\\
$^1\Sigma_u^-[\mathrm{F}]^c$	&5.27&5.28&5.26&5.31$\pm$0.05	&5.19&5.20&5.18&5.26$\pm$0.09	&5.06&5.07&4.97&	5.05	&5.05	&	\\
\end{tabular}