Discriminants identified with the statistical test. First-row panels: date (left), energy (center), and altitude (right). Second-row panels: absolute latitude (left), longitude (center), atmospheric entry angle (right). Third-row panels: Daylight (left), duration (center), and velocity (right). Fourth-row panels: x-velocity component (left), y-velocity component (center), and z-velocity component (right). The filled light blue region represents consecutive low-D_D events, while the solid line depicts their cumulative percentage, offering a visual indication of the discriminant’s effectiveness. Fireballs flagged as low-D_D(D_D < 0.1) are denoted by blue squares and high-D_D(D_D > 0.1) with red circles. Fireballs with D_D < 0.008 have a yellow plus symbol.