Optimized values of the merit function χ2 for various values of the Warm Breeze inflow direction longitude λ. The optimum point is marked in red, and the cyan point marks the position of the optimum solution found by Bzowski et al. (2012) for the NIS He gas alone, based on the data shown as the red points in Figure 6. The gray bar marks the range of longitudes for which the solutions are considered acceptable: the lower boundary is at the level of the χ2 minimum, and the upper one is on the level of .