Table 1. Data-collection statistics.

Values in parentheses are for the highest resolution shell.

Source	NW12A, Photon Factory
Wavelength (Å)	1.00000
Space group	P6122 or P6522
Unit-cell parameters (Å)	a = b = 77.7, c = 307.5
Resolution (Å)	20.0–1.90 (1.95–1.90)
Observed reflections	878833
Unique reflections	44625
Multiplicity	19.7 (12.0)
Data completeness (%)	99.8 (99.8)
Rmerge†	0.062 (0.388)
Rmeas‡	0.063 (0.405)
〈I/σ(I)〉	37.6 (6.12)
Mosaicity (°)	0.187

^† R _merge = , where 〈I(hkl)〉 is the mean intensity of the observations I_i(hkl) of reflection hkl.

^‡ R _meas = , where N(hkl) is the multiplicity of the reflection hkl, I _i(hkl) is the ith intensity measurement of the reflection hkl and 〈I(hkl)〉 is its average.