Kinematics of the [OIII] line emission. The upper panels show moment 0, moment 1, and moment 2 of the whole line profile velocity. The lower panels instead show v₁₀, the velocity at the 10th percentile of the overall emission-line profile in each spaxel, v₉₀, the 90th percentile, and W₄₀, i.e., W₄₀ = v₅₀ − v₁₀, the line width containing 40% of the emission line flux. Solid contours represent 30% and 50% of the peak emission in the bluest channel map (v < −1000 km s⁻¹) in Fig. 3, and the dashed contours the 5% and 10% emission of the third channel (−600 < v < −250 km s⁻¹). The maps show the spaxel with S/N > 3 on the total [OIII] flux, and the cross marks the position of the QSO.