Winding time of the phase spiral as a function of guiding radius, R_g, and azimuthal angle, θ_ϕ, in the TP (Sgr+wake) model. The six panels correspond to different snapshots from t = 0 to 0.88 Gyr. In each panel, bins with poorly defined phase spirals (i.e. E > 0.2 and SSIM < 0.4) are masked with hatching. The red curves in the panels at t = 0, 0.10, 0.29, and 0.49 Gyr indicate θ_ϕ = Ω(R_g)t + 230^°.