Nut slot height on fretless bass - Repairs and Technical

nut slot being cut too low I've found a few common specs online for setting bass nut slot height, and my measurements are consistently

The height of the strings from the neck of the guitar should be as low as possible without having any buzzing The depth of the nut slots on the open string

nut slot height However if you have a vernier caliper you can measure the height of the nut from the base to the slots for the high E

nuts and bolts slot How do you slot the nut correctly then? The basic idea when slotting your nut is file the slots as low as possible