Example frequency spectrum measurement. In black, we plot the frequency spectrum for KIC 11972798. This star has M_* = 0.9314 ± 0.1115M_⊙ and R_* = 36.8295 ± 0.0535R_⊙. The dotted gray lines are the l = 0 mode measurements computed from GYRE. The dotted blue line is ν_max = 2.4582μHz for this star. The green Gaussian shows the Gaussian weights applied to the modes computed by GYRE. The green shaded region indicates where the modes are truncated to compute Δν with a subset of modes. See Section 4.3.2 for details of how we measure Δν from the theoretical frequency spectra.