Table 2. Symmetry-operator reliabilities (R _symop) for alternate models (%).

Statistical values are computed to a limiting resolution of 3.5 Å.

Operator short notation†	Model A2 (Icalc)	Model A2 (Iobs)	Model A3 (Icalc)	Model A3 (Iobs)
	1.6	3.8	2.5	4.3
2z	0.0	0.0	2.8	3.6
2y	27.4	42.2	27.3	42.8
2x	27.4	42.2	27.3	42.9
2xy	27.4	42.2	27.3	42.4
	27.4	42.2	27.3	42.1

^†Rotation-axis directions are expressed in the reference setting of the tetragonal structure, A1, thus the fourfold along z.