Prediction of our model for the total mass of salt-rich and salt-poor dust collected during hypothetical horizontal flybys (performed along the dashed lines shown in Fig. 16). The mass is calculated for an ideal plane detector of 1 m² area. Masses for types I and II are added together, giving the salt-poor dust mass. All salt-poor dust particles contain organic compounds, although the actual proportion of mass-spectra showing lines of organics (which classifies them as type II) may depend on the instrument characteristics and flyby velocity.