where PGA is in cm∕s2, a = 1.375, b = 1.672, c = -1.928 and ϕ = 0.213 (h not given). Standard deviation is composed of two parts, inter-site τ = 0.261 and intra-site σ = 0.653. F = 1 for thrust mechanism and 0 otherwise.
Computes theoretical radiation pattern and finds a linear trend between residuals and radiation pattern but does not model.