- Ground-motion model is:
where c

_{i}(T) is the station coefficient, reflecting relative site effect for each period, assuming zero mean for all stations. - Response parameters are acceleration and velocity for 5% damping.
- Include at least five earthquakes with M
_{JMA}≥ 7.2. - Exclude earthquakes with focal depths, h, equal to 0km or greater than 200km.
- Exclude records with vectorial composition of PGA less than 0.01m∕s2.
- Use three-stage iterative partial regression method.
- For T ≥ 6s constrain horizontal anelastic coefficient to zero because get positive coefficient.
- See Yamazaki et al. (2000) for examination of station coefficients.