Structure of the escape for the three detections. Upper panel: cumulative contribution of each altitude grid layer to the total absorption in the best model. Lower panel: metastable helium density profile corresponding to the best model. In both panels, the solid black curve corresponds to the best parameters found for model “M1” (H/He ≥ 98/2) and the gray dashed line corresponds to the best solution for model “M4” (H/He = 90/10). The dotted vertical red line indicates the Roche lobe radius and the dash-dotted vertical blue lines correspond to our calculation of the ionopause standoff distance (Khodachenko et al. 2019).