Abundance difference as a function of condensation temperature (according to Lodders 2003). Filled circles: this paper, plus signs: Meléndez et al. (2009). Shaded area: this paper, dotted line: Meléndez et al. (2009). The shaded area summarizes the result of this paper when submitted to a linear-regression analysis (including the upper limit of O), giving Δ [X/Fe]  = a + mT_cond. The area delineates the range of regression lines due to the uncertainties in a and m. The elements in the range 1300–1500 K not identified are (from left to right): Cr, Si, Co, Ni and V. Error bars are discussed in detail in Sect. 3.2.