The location of the models of BKØ11 with an average period spacing close to that of KIC 8626021 in the mass-temperature plane. The colour scale is related to the the difference between the observed average period spacing of the star and the period spacing computed with Eq. (3). The spectroscopic values for the mass and temperature of the star are also indicated with the point and error bars. It is obviously outside the region of the best fits in average period spacing. The white regions are regions where models failed to converge. They do not affect the results.