Conservative number of galaxies expected from the full 32 deg² of MIGHTEE-HI area, derived from simulations. Top: expected number of galaxies from 32 deg² as a function of redshift. The redshift range most affected by RFI is hatched out. Bottom: expected number of galaxies from 32 deg² as a function of M_HI. The solid-line histogram is the distribution covering the full redshift range, whereas the light filled histogram represents the worst-case of fully excluding the redshift range hatched out in the top panel.