**Table 1:** Dielectronic recombination resonance strengths (10^-20 cm² eV) for O⁷⁺.
n	HF^a	TF^a	STO^b	Observed^c
2	13.8	11.1	13.2	12.4
3	23.6	21.7	21.5	24.5
4	19.1	18.6	18.4	18.0
5	16.3	15.4	15.3	14.3
6	13.2	12.0	11.9	9.6
$\ge$ 7		45.1	46.3	43.6

$\textstyle \parbox{6cm}{ $^a$\space Pindzola {et~al. }(\cite{pin90b}).\\ $^b$\space Present work.\\ $^c$\space Kilgus {et~al. }(\cite{kil90}).}$

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