Modeled mass distribution of the η-Aquariids (top) and Orionids (bottom) based on simulated meteoroids encountering the Earth between 2002–2019 near the time of the main peak of activity. The logarithm of the cumulative number of simulated meteors (weighted) is drawn as a function of the logarithm of the particles mass (in kg). Estimates of the differential mass index s in the visual(red), video (green), and radar (blue) mass ranges are provided for comparison. See text for details.