Overall fit of the best model (short dashed dark blue line) to the ISO SWS spectrum (solid red line). The model consists of the GBDS composed of amorphous Al₂O₃ grains plus an outflow (50% Ca₂Mg_0.5Al₂Si_1.5O₇ and 50% metallic iron) in which the mass-loss rate is 4 × 10^-10M_⊙ year^-1 from 50 AU to 500 AU and 2 × 10^-10M_⊙ year^-1 from 500 AU to 1800 AU. The stellar input black-body spectrum is shown by a dashed light blue line. For comparison the best model from Paper I is shown by the long dashed green line.