Distribution of αout − α for the noise-free case. It is centered at ⟨αout − α⟩ = −0.056 with a width of σ(α − αout) = 0.098. Comparing this plot with Fig. 4 shows that the total amount of DR is underestimated by 8.8% because αin ≤ α by definition. The detections where α < 0.06 are overplotted in red. Clearly, in these cases the detection of DR is difficult. In most cases, αout > α which demonstrates the limits of our method.
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