Scatter plot of rupture time of each subfault against its epicentral distance. The rupture time means the time at which the stacked waveform for a subfault showed its maximum value. The shadowed zone indicates constraint on the time window within which subfaults are allowed to rupture in the analysis. Circles are for subfaults on the northern side of the epicenter and triangles are for subfaults on the southern side. Size of plotted symbols represents the magnitude of the maximum amplitude.