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Table 1 Variance and AIC for each model

From: Waveform inversion for 3-D S-velocity structure of D′′ beneath the Northern Pacific: possible evidence for a remnant slab and a passive plume

Model Variance (%) AIC
PREM 133.4
PREM with time shift 76.2 1620.3
CG6 70.9 1585.6