Kolmogorov-Smirnov tests comparing the DLAs with and without detected narrow Lyα emission using the rest equivalent widths for C ii – 1334 Å, Si ii – 1526 Å, Al ii – 1670 Å, and Fe ii – 2344 Å absorption features. A black line traces the W₀ distribution for DLAs with narrow Lyα emission detected, and a thick colored line indicates the W₀ distribution for those without an emission detection. The K-S test statistic, D, gives the maximum vertical distance between the two distributions, and the P-value is the probability that the two distributions are drawn from the same population.