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Fig. 10.
Frequencies of the nine ℓ = 0 modes included in Table 3 as a function of their n-values. According to the asymptotic relation in Eq. (1), the slope provides the large frequency separation Δν while the intersection with the ordinate is Δν ⋅ ϵ, leading to the value for ϵ quoted in the figure and listed in Table 2.
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