Posterior distributions of the key parameters derived from the MCMC analysis for GL 480. The left panel shows the posterior distribution of the semi-amplitude K for the combined dataset (black), optical data (blue), SPIRou data (red), and the reference distribution from Feng et al. (2020). The middle panel presents the posterior distributions of the orbital period P, using the same color scheme. The right panel displays the posterior distributions of the stellar rotation period P_rot derived from the dET (blue) and dLW (black) time series, and the SPIRou dataset (red). All histograms are normalized to unit area for comparison.