Statistical distributions of three key parameters for counter-streaming ion events. The data are separated into observations outside (yellow) and inside (blue) the diamagnetic cavity. The top row (a–c) is derived from high-resolution data, while the bottom row (d–f) is from standard-resolution data. The panels show the energy ratio (a, d), count ratio (b, e), and angular separation (c, f). Red and blue dashed lines in each panel mark the mean values for the outside and inside cavity populations, respectively.