Table 4.

Theoretical and empirical variances for the re-alignments in Fig. 9.

	Theoretical variance	Empirical variance
$\langle c_x^2\rangle$	1.2090	1.2575
$\langle c_y^2\rangle$	1.2090	1.4349
〈 θ 2 〉	0.0238	0.0200