Why are the site values from the AFAD map different from the site values calculated using the Offline option in the TDY wizard?
Spectra values obtained by using the Offline option in the TDY wizard are calculated by the program. Since AFAD and ideYAPI use different algorithms, the values are not exactly the same. (The earthquake results obtained by using the Online and Offline options make little difference.)
If you want to use the same values on the earthquake map, you can enter the spectrum values (Ss, S1).
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