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Table 2 Criteria and location uncertainty corresponding to the quality rating (Q) of the hypocentral parameters in the event list in Table 1

From: Earthquakes in Switzerland and surrounding regions during 2014

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 >10
D >270 >60 >10 >10
  1. GAP largest angle between epicentre and two adjacent stations, DM minimum epicentral distance, H horizontal location, Z focal depth