Energy-averaged absorption opacity as a function of radius for a hydrostatic evolution of a 30 solar mass progenitor using the SFHo EOS. The dashed red lines show the opacities calculated with the neutrino spectrum from the energy-dependent neutrino transport (Eq. (29)). The dashed green lines show the opacities calculated according to Eq. (19). The solid blue lines represent the value according to Eq. (32). The panels show results for electron neutrinos (top), electron anti-neutrinos (middle), and heavy-lepton neutrinos (bottom). The opacities for the heavy-lepton neutrinos refer to effective opacities, which incorporate pair-production processes in a simplified way.