Histogram following Eq. (9) for the frequencies of stars in our g-mode sample. The gray shade marks the background level that represents a random match among combination frequencies and the horizontal dashed gray line marks 3 times that level. The vertical red shows the intercept of the dashed gray line and the distribution; it marks ε = 0.0002 according to Eq. (9). Frequencies occurring to the left of this line have a 67% probability of corresponding to a genuine combination frequency.