Same as Figure B.5, but zoomed in after removing the objects excluded by the σ-clipping. A linear fit and its ±3σ confidence region are shown as a solid and dashed blue line, respectively. Using this correlation, we identify objects above and below the confidence region, marked with diamonds and hexagons. The black ellipse encloses those above the confidence region that show Hα features in their spectra (see Figure B.8).