Table 8. Comparison of elliptical distortion parameters obtained from two different constraints: monoclinic symmetry of the unit cell and known unit-cell parameters from X-ray powder diffraction.

	Elliptical distortion from monoclinic cell constraint		Elliptical distortion from known cell constraint
	Amplitude (%)	Phase (°)	Amplitude (%)	Phase (°)
DS1	0.416 (14)	64.8 (10)	0.395 (4)	67.7 (3)
DS2	0.384 (10)	70.5 (18)	0.391 (4)	67.1 (3)
DS3	0.313 (18)	67.5 (20)	0.383 (4)	67.3 (3)