${\chi }_r^2$ maps for the various combinations of free parameters in the magnetospheric accretion models for the wing (blue, left) and core (green, right) components of the Hα line. Top row: Case when fitting only on the center of the component. Bottom row: Case when fitting the full line. In the insets, the various colored lines represent some of the best models with the corresponding ${\chi }_r^2$ shown in the color bar. The red line corresponds to the best model indicated by the red dot in the corner plot.