\begin{table}%t6 \caption{\label{Tab:Co:Ni:tar-str}The lowest $\Delta n_{{\rm c}} = 0$ core excitation thresholds (in Rydbergs) for \ion{Co}{x} and \ion{Ni}{xi}. Uncertainties are enclosed in lower parentheses.} \par %\centering \par \begin{tabular}{r l l l r r c l l r r r r} % 13 columns \hline \hline \multicolumn{13}{c}{\vspace*{-2mm}} \\ & & \multicolumn{4}{c}{${\rm Co}^{9+}$} & & \multicolumn{6}{c}{${\rm Ni}^{10+}$} \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ %\cline{3-6}\cline{8-13} \multicolumn{13}{c}{\vspace*{-2mm}} \\ K & Config. & Level(mix) & Present\tablefootmark{a} & NIST\tablefootmark{b} & MCHF\tablefootmark{c} & & Level(mix) & Present\tablefootmark{a} & NIST\tablefootmark{b} & MCHF\tablefootmark{c} & FAC3\tablefootmark{e} & CIV3\tablefootmark{f} \\ \hline \multicolumn{13}{c}{\vspace*{-2mm}} \\ %K Configuration Level Present NIST MCHF FAC3 CIV3 1 & $\rm 3s^{2}3p^{6} $ & $\rm {}^{1}\hspace*{-.5mm}S_{0}~(97.0\%) $ & $0.00000$ & $0.00000 $ & $0.00000$ & & $\rm {}^{1}\hspace*{-.5mm}S_{0}~(97.1\%) $ & $0.00000$ & $0.00000 $ & $0.00000$ & $0.0000 $ & $0.00000$ \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 2 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}P_{0}^{{\rm o}}~(97.5\%)$ & $3.97623$ & $3.999_{(30)}$\tablefootmark{\dag} & $3.70893$ & & $\rm {}^{3}\hspace*{-.5mm}P_{0}^{{\rm o}}~(97.6\%)$ & $4.27882$ & $4.27667 $ & $3.95697$ & $4.2998 $ & $4.34736$ \\ 3 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}P_{1}^{{\rm o}}~(96.9\%)$ & $4.00373$ & $4.026_{(28)}$\tablefootmark{\dag} & $3.73778$ & & $\rm {}^{3}\hspace*{-.5mm}P_{1}^{{\rm o}}~(96.8\%)$ & $4.31288$ & $4.31002 $ & $3.99197$ & $4.3349 $ & $4.38366$ \\ 4 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}P_{2}^{{\rm o}}~(95.8\%)$ & $4.06022$ & $4.084_{(21)}$\tablefootmark{\dag} & $3.79773$ & & $\rm {}^{3}\hspace*{-.5mm}P_{2}^{{\rm o}}~(95.2\%)$ & $4.38307$ & $4.38274 $ & $4.06469$ & $4.4086 $ & $4.45723$ \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 5 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}F_{4}^{{\rm o}}~(97.7\%)$ & $4.20594$ & $4.199_{(31)}$\tablefootmark{\dag} & $3.91676$ & & $\rm {}^{3}\hspace*{-.5mm}F_{4}^{{\rm o}}~(97.8\%)$ & $4.52944$ & $4.49482 $ & $4.18448$ & $4.5391 $ & $4.64639$ \\ 6 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}F_{3}^{{\rm o}}~(92.8\%)$ & $4.22715$ & $4.235_{(31)}$\tablefootmark{\dag} & $3.94997$ & & $\rm {}^{3}\hspace*{-.5mm}F_{3}^{{\rm o}}~(91.3\%)$ & $4.55153$ & $4.53374 $ & $4.22023$ & $4.5785 $ & $4.68656$ \\ 7 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}F_{2}^{{\rm o}}~(93.2\%)$ & $4.26350$ & $4.283_{(25)}$\tablefootmark{\dag} & $3.99798$ & & $\rm {}^{3}\hspace*{-.5mm}F_{2}^{{\rm o}}~(91.3\%)$ & $4.59721$ & $4.59342 $ & $4.27778$ & $4.6393 $ & $4.73636$ \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 8 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}D_{3}^{{\rm o}}~(62.3\%)$ & $4.50743$ & $4.494_{(38)}$\tablefootmark{\dag} & $4.21215$ & & $\rm {}^{3}\hspace*{-.5mm}D_{3}^{{\rm o}}~(60.3\%)$ & $4.84888$ & $4.80666 $ & $4.49868$ & $4.8593 $ & $4.93579$ \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 9 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{1}\hspace*{-.5mm}D_{2}^{{\rm o}}~(60.5\%)$ & $4.50846$ & $4.511_{(29)}$\tablefootmark{\dag} & $4.22855$ & & $\rm {}^{1}\hspace*{-.5mm}D_{2}^{{\rm o}}~(58.8\%)$ & $4.85545$ & $4.83728 $ & $4.52643$ & $4.8953 $ & $4.97061$ \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 10 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}D_{1}^{{\rm o}}~(96.7\%)$ & $4.53943$ & $4.53611 $ & $4.26634$ & & $\rm {}^{3}\hspace*{-.5mm}D_{1}^{{\rm o}}~(96.5\%)$ & $4.88993$ & $4.87373 $ & $4.56612$ & $4.9290 $ & $5.02599$ \\ 11 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{3}\hspace*{-.5mm}D_{2}^{{\rm o}}~(61.4\%)$ & $4.56821$ & $4.573_{(24)}$\tablefootmark{\dag} & $4.29382$ & & $\rm {}^{3}\hspace*{-.5mm}D_{2}^{{\rm o}}~(60.2\%)$ & $4.92948$ & $4.91337 $ & $4.60454$ & $4.9687 $ & $5.04846$ \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 12 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{1}\hspace*{-.5mm}F_{3}^{{\rm o}}~(59.0\%)$ & $4.58588$ & $4.606_{(25)}$\tablefootmark{\dag} & $4.32726$ & & $\rm {}^{1}\hspace*{-.5mm}F_{3}^{{\rm o}}~(56.1\%)$ & $4.94891$ & $4.95018 $ & $4.64195$ & $5.0024 $ & $5.12673$ \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 13 & $\rm 3s^{2}3p^{5}3d$ & $\rm {}^{1}\hspace*{-.5mm}P_{1}^{{\rm o}}~(96.1\%)$\tablefootmark{\bigstar} & $5.73579$ & $5.73579 $ & $5.51933$ & & $\rm {}^{1}\hspace*{-.5mm}P_{1}^{{\rm o}}~(96.2\%)$\tablefootmark{\bigstar} & $6.14044$ & $6.14158 $ & $5.88618$ & $6.2574 $ & $6.41884$ \\ & & & & & $5.5952^{{\rm d}}$ & & & & & $5.9728^{{\rm d}}$ & & \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 14 & $\rm 3s^{ }3p^{6}3d$ & $\rm {}^{3}\hspace*{-.5mm}D_{1}~(74.2\%) $ & $7.21441$ & $7.178_{(23)}$\tablefootmark{\dag} & $7.01984$ & & $\rm {}^{3}\hspace*{-.5mm}D_{1}~(75.1\%) $ & $7.76928$ & $7.720_{(31)}$\tablefootmark{\dag} & $7.53153$ & $7.7562 $ & $7.85347$ \\ 15 & $\rm 3s^{ }3p^{6}3d$ & $\rm {}^{3}\hspace*{-.5mm}D_{2}~(74.0\%) $ & $7.22694$ & $7.186_{(31)}$\tablefootmark{\dag} & $7.02926$ & & $\rm {}^{3}\hspace*{-.5mm}D_{2}~(74.1\%) $ & $7.78502$ & $7.730_{(32)}$\tablefootmark{\dag} & $7.54354$ & $7.7687 $ & $7.86852$ \\ 16 & $\rm 3s^{ }3p^{6}3d$ & $\rm {}^{3}\hspace*{-.5mm}D_{3}~(74.4\%) $ & $7.24842$ & $7.198_{(31)}$\tablefootmark{\dag} & $7.04436$ & & $\rm {}^{3}\hspace*{-.5mm}D_{3}~(75.3\%) $ & $7.81290$ & $7.740_{(33)}$\tablefootmark{\dag} & $7.56317$ & $7.7904 $ & $7.89090$ \\ \multicolumn{13}{c}{\vspace*{-2mm}} \\ 17 & $\rm 3s^{ }3p^{6}3d$ & $\rm {}^{1}\hspace*{-.5mm}D_{2}~(68.8\%) $ & $7.46032$ & $7.410_{(33)}$\tablefootmark{\dag} & $7.29060$ & & $\rm {}^{1}\hspace*{-.5mm}D_{2}~(69.7\%) $ & $8.03277$ & $7.970_{(34)}$\tablefootmark{\dag} & $7.81976$ & $7.9965 $ & $9.00447$ \\ \hline \end{tabular} \tablefoot {\tablefoottext{a}{present work: 2894-level MCBP results;} \tablefoottext{b}{critically compiled experimental data of \cite{Shirai:2000};} \tablefoottext{c}{MCHF results of \cite{Irimia:2003};} \tablefoottext{\dag}{extrapolated along the isoelectronic sequence;} \tablefoottext{\bigstar}{dominant excitation threshold - see Table~\ref{Tab:tar-rad};} \tablefoottext{d}{single-configuration TDCHF results\ of \cite{Ghosh:1997};} \tablefoottext{e}{6164-level FAC results\ of \cite{Aggarwal:2008};} \tablefoottext{f}{restricted CIV3 results\ of \cite{Verma:2007}.}}\vspace*{1.6mm} \end{table}