Good insightful question.
We’ll this is a question alot of students of the Map of Consciousness did muscle testing on for answer.
So, Hawkins, never talked about “ascension” directly so all of the answers you’ll find are just done by those who tested the best they could (as always be wary of crazy high or low numbers that are made to make one feel too superior or inferior using the Map.)
That said, most reliable tester felt reaching “Ascension” aka 4th density would require a Level of Consciousness of 310 or 350. Some say as low as 250+.
Again with the caveat that “Ascension” and “4th density” and slew of other factors, are being correctly interpreted by the testors and their understanding of this various schools of thought they come from.