1 2s2.2p3 4 S 1.5 0.000 0.000 2 2s2.2p3 2 D 1.5 146945.000 149212.489 3 2s2.2p3 2 D 2.5 191516.000 194863.447 4 2s2.2p3 2 P 0.5 280131.000 279148.349 5 2s2.2p3 2 P 1.5 359113.000 359158.477 6 2s.2p4 4 P 2.5 798974.000 797923.850 7 2s.2p4 4 P 1.5 879609.000 878418.001 8 2s.2p4 4 P 0.5 903253.000 902372.595 9 2s.2p4 2 D 1.5 1107290.000 1118287.007 10 2s.2p4 2 D 2.5 1128254.000 1138370.253 11 2s.2p4 2 S 0.5 1267423.000 1278710.597 12 2s.2p4 2 P 1.5 1318095.000 1336943.868 13 2s.2p4 2 P 0.5 1434451.000 1450829.338 14 2p5 2 P 1.5 2069678.000 2097685.426 15 2p5 2 P 0.5 2197305.000 2224959.761 -1 %filename: co_21.elvlc %Observed energy levels: Edlen, 1984, Phys.Scripta, 30, 135 %Theoretical energy levels (1-15): Zhang, Sampson, ADNDT, 1999, 72, 153 % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % G. Del Zanna, May 2001.