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Table 1 The number of data and results of S-wave splitting analysis.

From: Spatial distribution of crack structure in the focal area of a volcanic earthquake swarm at the Hakone volcano, Japan

Station   Number of events Φ (N°E) DT (ms)
KZR (Total) 40 143 ± 3 86 ± 2
  (Group-I) 34 148 ± 2 86 ± 3
  (Group-II) 6 113 ± 2 86 ± 2
T.OSS   36 105 ± 3 49 ± 4
KIN   13 130 ± 4 43 ± 7
KZY   13 143 ± 3 52 ± 5
KOM   7 156 ± 7 54 ± 12