Distribution of log ₁₀(g/ cm s^-2) as derived from the SEGUE sample of CEMP stars with −2.5 ≤ [Fe/H] ≤ − 2 (histogram with Poisson errors) and computed with our default model set A (solid line). The 0.2 dex bins are equally spaced in log ₁₀(g/ cm s^-2). In this and the similar plots that follow the area under the graph (which is the total number of stars) is normalised such that it is the same for both the observations and our model stars.