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Figure 1
A contour plot showing the probability α that a certain CC1/2 value calculated for a particular number of observations Nref arises from pure chance. The lines for α = 0.05, 0.01 and 0.001 are plotted. Below the α = 0.05 line, the correlation would not be considered significant and thus is produced by noise at 95% level of confidence or even lower. This may correspond to an appreciable value for CC* (lower axis).

IUCrJ
Volume 8| Part 4| July 2021| Pages 532-543
ISSN: 2052-2525
https://doi.org/10.1107/S205225252100467X