Dependence of the 50% condensation temperature (T_c) of elements on the disk pressure. Markers represent simulated condensation temperatures, and corresponding dashed lines are only to guide the eye. Colours, as denoted in the legend, are the same for both panels. All simulations use the solar elemental abundance pattern recommended by Lodders (2003). Top panel: 50% condensation temperature of major planet-building elements as a function of different disk pressures. Bottom panel: deviation of the 50% condensation temperature from the respective mean condensation temperature.