For reasons I don't understand, the FlightAware data quotes height at 100' intervals, despite the fact that the aircraft is sending it in 25' increments.
May be to alleviate the server. I didn't checked in FA what they've said before. May be it's extrapolation. FA takes its data from someone but who, when and how...
FR24 in the LAX area is not very well implemented and the F5M feeder is five minutes delay so I guess FA relies on FR24 or PF. The feeder near KOAK might also have a coverage issue in this sector.
At least we know that the aircraft maintained 11000ft for a while. It might stop the BA38 similitude debate.