| acceleration | x | ? |
| y | ? | |
| z | ? | |
| accelerationIncludingGravity | x | ? |
| y | ? | |
| z | ? | |
| rotationRate | alpha | ? |
| beta | ? | |
| gamma | ? | |
| interval | ? | |
| alpha | ? | ➵ |
| beta | ? | |
| gamma | ? |
According to Apple's ref. (#2 below):
The angles of rotation do not represent the real world orientation.
They are defined as offset from an arbitrary direction.