From: Earthquakes in Switzerland and surrounding regions during 2011
Rating
Criteria
Uncertainty
Q
GAP (degrees)
DM (km)
H (km)
Z (km)
A
≤180
≤1.5 × Z
≤2
≤3
B
≤200
≤25
≤5
≤10
C
≤270
≤60
>10
D
>270
>60