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Table 3

Lines used for abundance determinations.

Ion Line

N+ [N ii] λλ6548, 6584
O+ [O ii] λλ3726+29, 7320+30
O++ [O iii] λλ4959, 5007
Ne++ [Ne iii] λλ3868, 3967
Ne+3 [Ne iv] λλ4714+15, 4724+25
Ne+4 [Ne v] λ3425
S+ [S ii] λλ6717+31, 4068+76
S++ [S iii] λ9069
Cl+ [Cl ii] λλ8578, 9123
Cl++ [Cl iii] λ5517+37
Cl+3 [Cl iv] λ8045
Ar++ [Ar iii] λλ7136, 7751
Ar+3 [Ar iv] λλ4711+40
Ar+4 [Ar v] λ7005
Fe+ [Fe ii] λ8616 (7155)
Fe++ [Fe iii] λλ4658, 4701, 4733, 4754, 4769, 4881
Fe+3 [Fe iv] λ6740
Ni++ [Ni iii] λλ6000, 6401, 6533
Ca+ [Ca ii] λλ7291, 7324

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