As the ball spins around an axis, the measure of axial tilt. Positive means the axis is tilted to the right (thus resulting in a fade or slice for a right handed golfer), negative means the axis is ti [..]

The speed of the center of the clubface at impact (first contact with the ball)

The vertical (up-down) angle at which the club head is moving at impact. Positive means hitting up on the ball, while negative means hitting down on the ball

The horizontal (left-right) angle at which the club head is moving at impact. Positive means to the right (inside-out for a right hand golfer), negative means to the left (outside-in for a right hand [..]

The loft (angle) of the part of the club that makes impact with and influences initial direction of the ball, relative to vertical (vertical = zero degrees)

The angle of the part of the club that makes impact with and influences initial direct of the ball, relative to the target line (left-right). Positive means to the right (open relative to target for r [..]

The difference between dynamic loft and attack angle. The spin loft is related to the static loft of the club, however shaft flex and hands leading or lagging the clubhead will alter this.

a measure of how vertical the swing is, where a high value represents a very up and down (steep) swing plane and a low value a relatively flat (to the ground) arc. More technically, it is the angle ma [..]

The orien- tation of the swing arc, relative to the target line, where positive means to the right, negative means to the left. More technically, it is the horizontal direction the club head is travel [..]

The ball’s initial velocity.