Comparison between [OIII]λ5007 velocity profiles: red curves for the nuclear apertures in the upper panels, orange curves for the off-nuclear apertures retaining the outflow emission in the lower panel. The non parametric measurements of the [OIII] fit are labeled. We also overplot in long-dashed blue the results for [OII] emission lines fit (see Sect. 4.1). The [OII] profiles are renormalized in order to facilitate a comparison with the [OIII]. The dashed lines mark the positions chosen as zero velocity (the systemics for [OIII], and the mean wavelength of the [OII] doublet), the arrows mark the 98th and 2th percentiles indicating the v_max velocities.