Probability of detecting a neutrino source within a certain redshift. The figure was generated by simulating a population of transient neutrino sources with a density of 10^-6 Mpc^-3 yr^-1 distributed in redshift according to the star-formation rate and normalized to produce the detected astrophysical neutrino flux. Sources detected with only one single neutrino are on average far away (median redshift of 1.1), while sources detected with three or more neutrinos must be located nearby.