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Table 4 Criteria and location uncertainty corresponding to the quality rating (Q) of the hypocentral parameters in the event list

From: Earthquakes in Switzerland and surrounding regions during 2010

Rating

Criteria

Uncertainty

Q

GAP (°)

DM (km)

H (km)

Z (km)

A

≤180

≤1.5 × Z

≤2

≤3

B

≤200

≤25

≤5

≤10

C

≤270

≤60

≤10

>10

D

>270

>60

>10

>10

  1. GAP largest angle between epicenter and two adjacent stations, DM minimum epicentral distance, H horizontal location, Z focal depth