Demonstration of the rotation of the phase spiral with visualisation of how the model found the angles. Upper row: phase spiral at low, medium, and high Galactic azimuth (ϕ) with the angle θ_{0,  model} marked with a red line and θ_{0,  model} = 0 marked with a white dashed line. Lower row: corresponding spiral perturbations fitted to the data with θ_{0,  model} marked with a red line and the measurement distance for θ_{0,  model} marked with a white ring.