Probability distribution of the SFRD_IR at redshift z ∼ 4.5. All distributions are derived with the same relations between the stellar mass (bottom panels) and FUV magnitudes (top panels). The minimum is derived in the observed by ALPINE range of stellar masses and FUV magnitudes and is shown on the left panels. The SFRDs from extrapolated relation are shown on the right panels. Different colors correspond to different GSMFs and UVLFs (Bouwens et al. 2015b; Finkelstein et al. 2015; Ono et al. 2018; Davidzon et al. 2017; Song et al. 2016; Wright et al. 2018).