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Table 3.

Statistical criteria values for selection between the fit with one Gaussian and two Gaussians.

Quasar Δχ2 p value ΔAIC (a) ΔBIC (a)
J0309+2717 4.99 0.82738 0.47 −10.83
J1427+3312 0.92 0.17997 −3.82 −10.93
J1429+5447 23.08 0.99996 10.02 2.91

Notes.

(a)

ΔAIC, ΔBIC < −10 imply that the fit with one Gaussian is preferred. ΔAIC, ΔBIC > 10 imply that two Gaussians are preferred.

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