Open Access
Fig. 1
P-value of the χ2 -test vs. the Pearson correlation coefficient, R, for both FWHM (orange) and BIS (blue) indicators. The radii of the symbols are linearly scaled with the number of points considered. The dashed lines show the limits of significance for R (±0.5) and for the p-value at 3σ (<0.01).
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