Quadratic LDC for PHOENIX-COND models. Quasi-spherical models are represented by a continuous line and crosses and the r method by a dashed line and asterisks. The LDC for the PHOENIX-DRIFT models from Claret et al. (2012) are denoted by a dashed-dotted line and the symbol x. In the last case and for the sake of clarity, only models with T_eff< 4400 K are shown. The third panel shows the root square of the merit function χ. All calculations were performed for log g = 4.5, log[A/H] = 0.0, V_ξ = 2 km s^-1. Kepler photometric system. LSM calculations.