Response parameter is pseudo-velocity for 5% damping.
Use two site classes:
Rock
S = 1
Soil
S = 0
Test magnitude dependence of h by selecting data from < 10km and plot residuals against M. Do not find
any systematic relationship so conclude that data does not support a magnitude-dependent shape.
Smooth coefficients using unspecified method.
No data from rock sites with d < 8km and M > 6 so suggest caution in applying equations for rock
sites at shorter distances and larger magnitudes. Also suggest caution in applying equations for d < 25km
and M > 6.6 for either soil or rock because no data in this range. Also do not recommend equations for
M > 7.7.
