PSD of KIC 9693187 around the excess of power spectral density. The top panel shows the full power excess, with the original, and smoothed PSD in grey, and black, respectively. The lower provides a zoomed view on the two central radial orders. The red line depicts the combined model of extracted frequencies, which are represented by the vertical dashes (blue, red, and orange for ℓ = 0, 1, and 2, resp., see Table C.2).