Spatial power spectra P_k of bolometric intensity I_bol for the SSD (solid) and HD (dashed) cases plotted against spatial frequency 1/x (normalized by the horizontal box size x₀ for each star). Top: P_k for all cases normalized by the SSD F star total power (Σ_k P_k). Bottom: Relative change in power at different scales between the SSD and HD cases. The gray shaded region refers to the approximate scales corresponding to the range in granule sizes, for which the center of gravity is calculated in Table 2.