Distributions of measured offsets in kpc in the source plane. The light blue distribution represents spatial offsets measured between UV and Lyman-α emission centroids measured in the source plane, and the dark blue one the distribution of spatial offsets measured between UV and Lyman-α emission peaks projected in the source plane. The hatched distribution represents the galaxies with a spatial offset probability higher than 95%. The dashed and solid lines show the median values of centroid and peaks offset distributions, respectively.