Contribution of galaxies to the cosmic infrared background at 850 μm as a function of the flux density limit. The blue and red solid lines are our results based on the full and the secure z <  4 samples, respectively. The shaded area is the 1-σ confidence region. The dashed green line is the measurement of Hsu et al. (2016) using SCUBA2 data of cluster fields. The black line is the absolute measurement of the total CIB combining COBE/FIRAS and Planck data (Odegard et al. 2019).