Histograms of the angle differences (in degree) between the best reconstructions of the GMF and the input one computed at every location of the sampled Galactic space (left). From top to bottom: differences of the pitch angles, the tilt angles, the inclination angles, and the position angles (see text). Case C overlaps case A in tilt and position angle differences. Right: same as for left column but we present the cumulative distributions of the absolute values of the angle differences.