Properties of the distributions of Hansen coefficients. (a) Maximum values of the Hansen coefficients, F_Nm, versus eccentricity for l = 2 modes and three different azimuthal orders, m = −2, 0, +2, denoted by blue, green, and red points, respectively. We note the marginal contribution of the m = −2 modes. (b) Dependence of on eccentricity with the same colour-coding as in panel a. The solid coloured lines represent the best fits of the fourth-degree polynomials, which we used to determine frequency ranges in the asteroseismic calculations.