I think they changed the Pennzoil Ultra formula from a couple of years ago, about 1/3 as much boron now; saw that on another recent UOA of PU too.
Fram Ultras shouldn't do another 10k miles on top of this, they are supposed to be limited to 15,000 miles.
Iron was incredibly low for that many miles. Fantastic report, no problems here.
What were you using before that had all that magnesium? Castrol Edge?