Periods of Table 4 plotted in the Δk – period planes. Filled circles denote average periods by the 9 μHz spacings. The panels on the left and right show the ℓ = 1 and 2 solutions and their linear least-squares fits, respectively. The residuals of the fits are also presented. Top and bottom rows display different solutions by changing some periods’ presumed ℓ values. The resulting period spacings (ΔΠ_{ℓ = 1,2}) are denoted.