Ah, right oh.
The normal certification factor for landing is 1.67 with some jurisdictions reducing this for alternates to 1.43. Others may well do other things. Certainly no relevance to ASDR. Other than the 2 seconds pad at V1 for recent certifications, best to treat ASDR as raw data and very critical, considering that the flight test and back room aerodynamicist work will discard anything not "quite up to scratch".