Reconstructed matter power spectrum in KiDS-1000 for τ = 5.0 and N_k = 20 in three variants. The errors marginalise over uncertainties in the lensing kernel and IA. Shown are the posterior 68% CI about the median (lines). Left panel: Transfer function f_δ(k, z) averaged over the entire redshift range Z₁ = [0, 2] and relative to the reference, P_δ^fid(k, z), with parameters listed in Table 1. Middle panel: Same as the left panel, but for three independent transfer functions averaged separately within the ranges Z₁ = [0, 0.3], Z₂ = [0.3, 0.6], and Z₃ = [0.6, 2]. Right panel: Dimensionless power spectrum, Δ²(k, z) = 4π k³P_δ(k, z) = 4π k³ f_δ(k, z) P_δ^fid(k, z), interpolated to the centres of three redshift bins Z₁, Z₂, and Z₃.