Comparison of the distribution functions of relative orientations for the data, in black (see Fig. 8), and the Gaussian models with fM = 0.8, in grey, only considering the selected pixels. The two plots show five realizations of the Gaussian models with an angular power spectrum of power law index αM = −1.5 (left) and αM = −2.0 (right). Because of sample variance, the steeper power spectrum produces asymmetries and skewness in the distributions.
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