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Fraction of overlaps as a function of resolution for two (red), three (green), four (blue) and six (cyan) crystals. Solid lines represent the mean values for the resolution shells; the error bars represent the minimum and maximum values in each resolution shell. Overlap fractions calculated using (a) N σ = 3 and (b) N σ = 2, where N σ is the number of standard deviations used to calculate the reflection mask.
