Flux ratio of the two peaks plotted as a function of the peak separation, colour-coded by the logarithmic rest-frame EW. As in Fig. 14, the coloured dots with black circles show objects without UV continuum counterparts and the grey bar in the top left corner shows the median errors. The black dots and error bars show the median flux ratio (including lower limits) in peak separation bins of 120 km s⁻¹. The x-axis error bars show the widths of the bins, the y-axis error bars show the first and last quartiles. The grey dashed line shows a ratio of 0.5, meaning above this value the blue bump dominates. The light green stars show Green Pea galaxies form Yang et al. (2016) in a redshift range between z ≈ 0.14 − 0.26.