M2.5 : 16.8 m
M3.0 : 53.7 m
M3.5 : 2.85 h
M4.0 : 9.06 h
M4.5 : 1.20 d
M5.0 : 3.83 d
M5.5 : 12.2 d
M6.0 : 38.8 d
M6.5 : 124 d
M7.0 : 1.08 y
M7.5 : 3.43 y
M8.0 : 10.9 y
M8.5 : 34.7 y
M9.0 : 111 y
M9.5 : 352 y
M10.0 : 1120 y
Based on 54,198 events. Largest M9.6
n = Events per year with magnitude >= M
M <= 10.0
log10(n) = 7.01 - 1.006*M