a)c₁ radial profile (black curve) derived from the Fourier decomposition of the velocity field of NGC 1614. The c₁ term accounts for the (projected) circular component of the velocity field (v_circ). We also plot (red curve) the radial profile of the (projected) non-circular motions (v_nonc) derived up to the third order of the decomposition. b) Radial profile of the v_nonc/v_circ ratio. c) Radial variation of the s₁/c₁ ratio. The s₁ term represents the (projected) axisymmetric radial motions of the velocity field. Errorbars in all panels represent 1σ errors.