Spectrograms showing the evolution of energetic particle anisotropy during the course of the event (from top to bottom: omni-directional, from Sun, toward Sun, and transverse). Particle directions are defined with respect to the sunward-facing nominal Parker spiral direction, with from-Sun being from 0 to 60 degrees, transverse from 60 to 120 degrees, andtoward-Sun from 120 to 180 degrees. Details on these directions are shown in the appendix. Bottom panel: magnetic field in RTN coordinates and we see that particle anisotropies are highly correlated with changes in the magnetic field. A strong influx of energetic particles propagating toward the Sun is highlighted in yellow, while dropouts in flux are highlighted in orange. Data are averaged into 15-min intervals.