From: Precursory seismicity changes prior to major earthquakes along the Sumatra-Andaman subduction zone: a region-time-length algorithm approach
Case A
r 0 = 100 km, t 0 = 2 years
Case B
r 0 = 75 km
r 0 = 125 km
t 0 = 1.75 years
t 0 = 2.25 years
Correlation of A and B
0.82
0.91
0.81