Minimum-to-minimum ratio of the 5% and 10% CRs. Each panel, consists of the ratios for both spectral lines and for different amounts of data exclusion, based on the χ2 values of a lognormal fit to radiance distributions. The effect of two different methods of determining the histogram binsize and weighting them for fitting has been emphasized. The abbreviations cnt and sct and pois are for constant, Scott’s rule and Poisson, respectively. The differently coloured lines are labelled in panel b).
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