Relative accuracy of temperature estimates in the case of weighted sampling. Each frame corresponds to one of the weighting parameters listed in Table 1. The errors are shown for the surface (blue curves), the half-radius point (green curves), and the centre of the model. The vertical dashed lines mark the default solution without weighting. The dark lines correspond to the 0.2 M_⊙ and the light (transparent) curves to the 10 M_⊙ models. The cyan lines and the right hand axis show the corresponding run times for the simulation step only.