Table 1: Observed lines. Asterisks denote ions observed by Peter & Judge (1999) or Teriaca et al. (1999). Temperatures at peak of the ion's relative abundance $T_{\rm e}$ follow Landini & Monsignori Fossi (1990).
Line (Å) log ( $T_{\rm e}$ /K) Line (Å) log ( $T_{\rm e}$ /K)

Mg IX 368.1 6.00 O I $^{\ast}$ 1152.1 4.18

He I $^{\ast}$ 584.3 4.50 C III $^{\ast}$ 1175.7 4.80

O V $^{\ast}$ 629.7 5.39 C I $^{\ast}$ 1267.7 4.18

N III 764.4 4.90 O I $^{\ast}$ 1302.2 4.18

N IV 765.2 5.20 O I $^{\ast}$ 1304.9 4.18

Ne VIII $^{\ast}$ 770.4 5.81 Si II $^{\ast}$ 1309.3 4.10

S VI $^{\ast}$ 933.4 5.28 C II $^{\ast}$ 1334.5 4.60

O VI $^{\ast}$ 1031.9 5.47

**Table 1:** Observed lines. Asterisks denote ions observed by Peter & Judge (1999) or Teriaca et al. (1999). Temperatures at peak of the ion's relative abundance $T_{\rm e}$ follow Landini & Monsignori Fossi (1990).
Line (Å)	log ( $T_{\rm e}$ /K)	Line (Å)	log ( $T_{\rm e}$ /K)
Mg IX	368.1	6.00	O I $^{\ast}$	1152.1	4.18
He I $^{\ast}$	584.3	4.50	C III $^{\ast}$	1175.7	4.80
O V $^{\ast}$	629.7	5.39	C I $^{\ast}$	1267.7	4.18
N III	764.4	4.90	O I $^{\ast}$	1302.2	4.18
N IV	765.2	5.20	O I $^{\ast}$	1304.9	4.18
Ne VIII $^{\ast}$	770.4	5.81	Si II $^{\ast}$	1309.3	4.10
S VI $^{\ast}$	933.4	5.28	C II $^{\ast}$	1334.5	4.60
O VI $^{\ast}$	1031.9	5.47

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