1D and 2D marginal posteriors from three inferences described in the text: (i) traditional state-of-the-art analysis using a single IC realisation and spherically averaging the 2D PS down to μ_min = 0 (orange); (ii) using a single IC realisation but spherically averaging the 2D PS down to the same μ_min = 0.97 used for the mock data (blue); and (iii) applying 21cmPSDenoiser to a single realisation in order to mitigate sample variance followed by the μ_min cut to mitigate PS anisotropy (black). The 2D contours show 95% CIs. The pink lines show the true parameters θ_mock.