Table 4: Ionic abundances derived from CELs.
Xi+/H+ Lines $N_{{\rm X}^{i+}}/N_{{\rm H}^+}$

C2+/H+		 C III] $\lambda\lambda$1907,1909 8.15 $\times$ 10-5
N+/H+ [N II] $\lambda\lambda$6548, 6584 2.62 $\times$ 10-5
O+/H+ [O II] $\lambda\lambda$3726, 3729 2.47 $\times$ 10-5
O2+/H+ [O III] $\lambda\lambda$4959, 5007 3.39 $\times$ 10-4
Ne2+/H+ [Ne III] $\lambda\lambda3868, 3967$ 1.02 $\times$ 10-4
Ne3+/H+ [Ne IV] $\lambda\lambda4724, 4725^{{a}}$ 7.44 $\times$ 10-5
S+/H+ [S II] $\lambda\lambda$6716, 6731 9.13 $\times$ 10-7
S2+/H+ [S III] $\lambda6312$ 5.80 $\times$ 10-6
Cl2+/H+ [Cl III] $\lambda\lambda$5517, 5537 1.12 $\times$ 10-7
Ar2+/H+ [Ar III] $\lambda7135$ 1.62 $\times$ 10-6
Ar3+/H+ [Ar IV] $\lambda\lambda4711, 4740$ 5.24 $\times$ 10-7

a Marginal.

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