Results of the simple kinematic model as a function of radius. Top left: GC system rotation amplitude v_rot for all GCs in purple. The black line shows the LOS velocities of the stellar component, taken along a slit 0.4′ above the plane of the disc. Top right: Velocity dispersion of the full GC sample σ_GCS in purple. Within the rotation-dominated disc, the dispersion is significantly lower than off-plane. Bottom panels: GC rotation amplitude and dispersion for the red and blue GC subpopulations, separately.