The plane angle between the Y-Z plane and the plane containing both the stylus axis and the Y axis, in degrees of the range -90,90, a positive tiltX is to the right (default: 0)
The plane angle between the X-Z plane and the plane containing both the stylus axis and the X axis, in degrees of the range -90,90, a positive tiltY is towards the user (default: 0).
Y coordinate of the event relative to the main frame's viewport in CSS pixels. 0 refers to
the top of the viewport and Y increases as it proceeds towards the bottom of the viewport.