Distributions of uncertainties in geocentric speed, σ(υ_ɡ), (panels a, c, and e) and in radiant elongation, σ(ϵ_ɡ), (panels b, d, and f) as reported in the respective databases (i.e. FRIPON, GMN, and CAMS, the three largest ones considered in this study). Distributions are shown separately for all events (filled histograms) and for hyperbolic events that survived the 3σ filtering (empty histograms).