From: A study on the detection of bulging disease in ancient city walls based on fitted initial outer planes from 3D point cloud data
First section
Second section
Third section
Medium error
Angle with XOY plane
82.54°
83.20°
82.33°
 ± 0.31°
Angle with XOZ plane
0.10°
0.09°
0.03°
 ± 0.04°