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Table 2

Number of energy levels and radiative transitions adopted in synthesis procedures.

Ion E i Transitions Ion E i Transitions

He i 50 280 Mg i 50 215
C i 80 716 Mg ii 30 176
C ii 40 189 Al ii 80 528
C iii 34 105 Al iii 19 60
N i 80 531 Si i 50 186
N ii 50 279 Si ii 40 206
N iii 34 128 Si iii 70 414
O i 50 211 S i 50 206
O ii 70 468 S ii 23 43
O iii 28 67 S iii 27 55
Ne ii 50 258

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