- See Section 2.287.
- Response parameter is pseudo-acceleration for 5% damping.
- Records only used for spectral frequencies 1.25 times the high-pass corner frequency used in the record
processing. Therefore, number of records and earthquakes available for regression decreases with increasing
- Fix a2, a12, a13, a16 and a18 at their values for 2–4s for T > 5s because they could not be constrained by
- Smooth coefficients in several steps.