Probability of magnification (in log₁₀ bins) for the two single lenses. The purple dashed line represents the microlens on the negative parity side of the macro-CC, while the orange solid line represents the positive parity case on the right and left panels of Fig. 1, respectively. The dotted lines represents the power-laws that always appear for isolated microlenses near macro-CCs, and for N microlenses with low ∑_eff. The variation in the value of the ∑⁻² power-law amplitude is shown in Fig. 3.