Recovered oscillation part of the power spectra in Fourier space for the grids centred at z = 0.9 considering, from top to bottom panel, spectro-z, photo-z without and with BDT 80% cut. The coloured lines are the fitted oscillations using the simple “wiggle only” description. The BAO scale is at the first intersection between this fitted damped sinusoid and the horizontal black line. The expected value of k_A from the fiducial Planck 2015 ΛCDM model (0.0417 Mpc⁻¹) is shown by the vertical line.