Emergent spectrum (top panel) and temperature structure (bottom panel) of the fiducial model (with η = 0.75) in comparison with those of the models with smaller bulk velocities of the accreting particles (η = 0.50 and 0.25). The fit to the spectrum above 5 keV with an exponential cutoff power law with Γ = 2.25, E_cut = 80 keV is shown for η = 0.25. The dotted curve shows the blackbody with temperature kT = 1.1 keV.