ML-GPR components decomposition of the residual Stokes-I for the three redshift bins. The residual Stokes-I data (blue line) are decomposed into the following components: foreground sky (red), mode-mixing (orange), excess (yellow), noise (green), and the 21 cm signal (magenta). The residual (grey line) represents the Stokes-I data after subtracting all the foreground components. The shaded area represents the 2-σ uncertainty. The top panel displays the cylindrically averaged power spectra as a function of k_∥ (averaged over k_⊥), while the bottom panels shows the spherically averaged power spectra.