The impact of MWA and LOFAR on the parameter constraints. Projected posterior distribution functions (PDFs) for the five simulation parameters, obtained by assuming flat priors and combining different observations: HERA alone (left, as in Abdurashidova et al. 2022a) and LOFAR, HERA, and MWA (right). Solid (dashed) lines correspond to regions containing the highest 68  per cent (95 per cent) probability. We see that HERA constraints are not significantly improved by adding the published limits on the power spectrum from other interferometers.