Left: A_{flux ratio} versus log(L_FIR[L_⊙]). Symbols are as in Fig. 14. Right: A_{flux ratio} cumulative probability distribution for three L_FIR bins: 9 < log (L_FIR[L_⊙])  < 9.5 (solid line), 9.5 < log (L_FIR [L_⊙])  < 10.0 (blue dashed line) and 10.0  <  log(L_FIR[L_⊙])  <  11.0 (dash-dotted line). The (green) dotted line represents the A_{flux ratio} cumulative distribution for those galaxies with an upper limit.