Data vs. simulations (NIS He + Warm Breeze) differing by the lower limit of the integration boundary over speed. The simulations were carried out for the full velocity range from 0 relative speed in the IBEX inertial frame (cyan), and for the lower integration limits of 37 km s−1 (green), 43 km s−1 (gray), and 52 km s−1 (magenta). Dark blue denotes the data. The limit for the case shown in gray was actually used in the fitting. Orange is the simulated flux for the NIS He component. The horizontal axis in all panels is the spin angle, and the vertical scale is the flux normalized similarly as in Figure 6.