Forecast contours at confidence levels of 68% and 95% using the power spectrum for four different uncertainties on the galaxy bias (dashed contours) compared to when the galaxy bias is fixed (continuous contours). The light blue dashed contours are obtained using the columns ‘+1σ’ and ‘+2σ’ in Table B.1; the light pink dashed contours using the columns ‘−1σ’ and ‘−2σ’; and the orange continuous contours refer to the column ‘best’.