Residual distributions in the model-A CEMP-s stars of our sample with ν ≥ 2. The number of stars in which the element is measured is indicated in brackets. The red-hatched, blue-filled and grey-dotted histograms indicate the residual distributions for CEMP-s/nr, CEMP-s/r and CEMP-s/ur stars, respectively. In the top-left panel the residual distribution of carbon is shown for those stars without a nitrogen measurement.