From: Earthquakes in Switzerland and surrounding regions during 2015 and 2016
Rating (Q)
Criteria
Uncertainty
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