| vP0/(m・s−1) | vS0/(m∙s−1) | ε/1 | δ/1 |
The first group | 3000 | 1732 | −0.2, −0.1, 0, 0.1, 0.2 | −0.2 |
The second group | −0.1 | |||
The third group | 0 | |||
The fourth group | 0.1 | |||
The fifth group | 0.2 |