Data used in the analysis. Gray dots with error bars represent count rates averaged over the lengths of good time intervals for individual orbits, obtained in the 2010 observation season. Shown are orbit-averaged count rates in (s bin)⁻¹ as a function of IBEX spin angle. The horizontal lines represent the adopted background levels for the orbits. Dark blue symbols represent the data actually adopted for the analysis, with background subtracted. Note that the vertical scale is logarithmic and owing to the very high signal-to-noise ratio the differences between the gray and blue dots may be hardly visible in the plot. Green and orange symbols represent orbit-averaged count rates from equivalent orbits from the 2011 and 2012 observation seasons, respectively, during which the Warm Breeze population dominates. Orbit 62 is missing because of an unplanned reset of the on board computer and resulting total data loss for this orbit (McComas et al. 2012b).