Cumulative contribution to the CIB as a function of the flux density cut at 250 μm (left), 350 μm (center), and 500 μm (right). Red: cumulative contribution from our counts. The asterisks represents the fraction resolved at the limit used for our analysis. Cyan: contribution of the BLAST sources probed by stacking (Béthermin et al. 2010b). Green: contribution of the sources resolved by SPIRE (Oliver et al. 2010b). Blue: contribution of the sources resolved by BLAST (Béthermin et al. 2010b). Violet hatched region: FIRAS absolute measurement of the CIB; a region is hatched here if it is in the 1-σ confidence region of Fixsen et al. (1998) or Lagache et al. (2000).