S/N measured from LSDCat for the L17 LAH sample as a function of three LAH parameters: σ, r_sH, and f_H. Black dots show the individual LAH values, and the dashed red line shows the adopted S/N cutoff at S/N > 7. One feature to note is the S/N behavior of f_H, particularly for lower halo fractions. LAHs with low f_H are generally not detected with low S/N, despite the detectability advantages for low halo fractions. We discuss this further in Sects. 4.1 and 4.4.