Power-spectrum multipoles for the 𝒱 mocks in the redshift range z ∈ (1.1, 1.3). The mean and RMS scatter over the 140 mocks are displayed with squares and error bars, respectively. The solid and dotted lines show the theoretical predictions obtained with the Kaiser model (see Eq. (42)) with and without accounting for the window function of the EWSS (see Eq. (46)), respectively. The vertical dashed line marks the characteristic wavenumber, k_C = 2 π/V^1/3.