Fig. 8

Dependence of the number of selected meteors on the threshold Southworth-Hawkins (1963) D-discriminant, Dlim, for the shower corresponding to filament F2 separated from the F – IAU MDC photographic (plot a), C – IAU MDC CAMS video (b), S – SonotaCo video (c), E – EDMOND video (d), and R – radio-meteor (e) database. The points on the curves in plots b and c regarded as the “break points” are indicated by arrows.
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