Ratios ${k_V^2}_{\mathrm{T}}/{k_V^2}_{\mathrm{NT}}$ (left column) and ${\widehat{\tau }}_{\mathrm{T}}/{\widehat{\tau }}_{\mathrm{NT}}$ (right column) as a function of the ratio N/2Ω and of the colatitude θ in the sub-inertial (ω = 1.5Ω; first line) and in the super-inertial (ω = 2.5Ω; second line) regimes. In the sub-inertial regime, GIWs are trapped in an equatorial belt while they are propagating at all colatitudes in the super-inertial regime.