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Table 3

Number of levels and lines of model ions used for line-formation calculations of metals.

IV V VI VII VIII IX X

C 54, 295
N 27, 99
O 12, 16 54, 291
Ne 8, 9 103, 761 77, 506
Mg 15, 18 27, 60 46, 147 50, 269
Si 25, 59 45, 193 61, 138 55, 239
S 39, 107 25, 48 38, 120 38, 117
Ca 1, 0 15, 23 25, 126

Notes. First and second numbers of each table entry denote the number of levels and lines, respectively. Not listed for each element is the highest ionization stage considered in the model atom that only comprises its ground state.

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