Errror function plot in KS test appears to be mislabeled
The normal Erf in the KS test is labelled as "Erf with \sigma
= ..." where sigma is the bias factor applied to the Delta-SNR variates.
https://git.ligo.org/pygwb/pygwb/-/blob/master/pygwb/statistical_checks.py?ref_type=heads#L1379
I think this label could be misleading. The Erf being plotted appears to be a standard normal N(0, 1) for comparison with the plot of the Delta-SNR data (bins_count) which has been corrected by the bias. So it might be clearer if the Erf was just labelled something like "Normal CDF" or similar. Perhaps the bias or correcting factor could be included in the data plot instead.
The use of \sigma
I feel is also easy to confuse with the stochastic sigma. It is not obvious this is the bias (or whatever std deviation is used to correct the Delta-SNR).