Table 13: Comparison of abundances in NGC 3242.
Elem. Present T $^{\dagger}$ H $^{\dagger}$ HK $^{\dagger}$ B $^{\dagger}$ Solar $^{\dagger}$
He 0.092 0.10 0.081 0.11 0.091 0.098
C(-4) 1.95   4.12   2.6 2.5
N(-4) 1.35 0.34 0.61 0.49 0.89 0.84
O(-4) 3.8 3.31 3.38 4.1 4.35 4.6
Ne(-5) 9.0 7.8 5.1 8.6 11.0 12
S(-6) 2.8 2.38   2.1 3.2 14
Ar(-6) 1.7 0.98   1.5 1.4 4.2
Cl(-7) 0.70 0.88   1.1   3.5
P(-8) 4.5         23
$^{\dagger}$ References: T: Tsamis et al. (2003), H: Henry et al. (2000), HK: Henry et al. (2004), B: Barker (1985), Solar: Asplund et al. (2005), except Ne and Ar (see Pottasch & Bernard-Salas 2006).

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