Snapshots of the normalized mean subtracted fluctuation in the 21 cm field at three different redshifts for our fiducial set of model parameters that was used to generate the mocks (ɀ = 7.0, 8.0 in the top panel, and ɀ = 9.0 in the bottom left panel) along with the redshift evolution of large-scale (k ~ 0.14 h/cMpc) 21 cm power spectra (in the bottom right panel). The dashed line corresponds to the redshifts we used in the likelihood analysis.