- Ground-motion model is:
where Y is in cm∕s2, C

_{1}= 4.85, C_{2}= 1.02, C_{3}= -1.90 and σ = 0.50 (the coefficients 15 and 0.31 were taken from Theodulidis and Papazachos (1992) since they cannot be determined by the data). - Use 2 site classes:
- S = 0
- Bedrock
- S = 1
- Alluvium

- Use data from mainshock and aftershocks of 13 May 1995 Kozani-Grevena earthquake.
- Use a four-step approach: derive relation between PGA and intensity (using only data from largest events),
assess decay of PGA with distance, adjust PGA to a fixed distance using this equation and finally regression
to find remaining coefficients
^{13}. - Adjust all data to M
_{w}6.6 and compare observed and predicted PGAs. Find reasonable fit.

^{13}The procedure is not entirely clear.