Inversion results under different settings: (a) complete, (b) without corrections (i.e. amplification and delay factors), (c) amplitude data only, and (d) time data only. The pale-blue dots are hypocentres (i.e. median values of the MCMC samples) in the complete case. The red dots are the resultant hypocentres in the other cases. The inverted triangles are seismic stations. The grey line represents the trench.