Distribution of the optimum α values from the BLS0 analyses of datasets of different signal detection powers for the secondary sets (see Table 1). The detection ratios obtained from the BLS analyses of the secondary sets alone are given by dr-h0 and dr-h1. All data points used in the construction of the histogram satisfy the detection criteria with S∕N_min = 6. We use the same 500 realizations in both datasets. Aliasing in set H1 boosts α to higher values for optimized BLS0 performance.