In case you were wondering:
The blue angle is 69.47688291° measured and not rounded like the others.
If you measure 1/8" in from the front like the CR90 then the front is 88.563°
I wasn't able to scan mine at a flush angle or fix the 0.6° it was off,
so I used yours to show what 90° would look like from the hole's center.
mine was off too, but then again there has been many tiles that have been off by a couple of minuets.