When using AVO analysis, what specific change in the reflection coefficient versus the angle of incidence characterizes a Class III 'bright spot' anomaly?

A Class III AVO anomaly is characterized by a strong negative reflection coefficient at near-zero angles of incidence that becomes increasingly more negative as the angle of incidence increases. In AVO analysis, which stands for Amplitude Versus Offset, experts study how seismic reflection amplitudes change as the distance between a source and a receiver increases, as this distance relates to the angle at ....