M2.5 : 15.5 m
M3.0 : 50.4 m
M3.5 : 2.73 h
M4.0 : 8.88 h
M4.5 : 1.20 d
M5.0 : 3.91 d
M5.5 : 12.7 d
M6.0 : 41.3 d
M6.5 : 134 d
M7.0 : 1.19 y
M7.5 : 3.88 y
M8.0 : 12.6 y
M8.5 : 41.0 y
M9.0 : 133 y
M9.5 : 433 y
M10.0 : 1410 y
Based on 26,236 events. Largest M9.0
n = Events per year with magnitude >= M
M <= 10.0
log10(n) = 7.09 - 1.024*M