Selection functions $P_{\det ,\mathrm{k}}(\stackrel{\sim }{L},z)$ for LAEs analysed in each individual survey. The white and black contours indicate the 10% and 90% completeness limits, respectively. The MW and MAGG selection functions are taken from Herenz et al. (2019) and Fossati et al. (2021), respectively. The vertical stripe with a detection fraction of zero around redshift z ∼ 3.8 in the MXDF and MUDF surveys is caused by the Ground Layer Adaptive Optics module, which uses an artificial laser guide star to improve image quality during the observations (Fossati et al. 2019; Bacon et al. 2023). This region therefore contains no data.