As a function of redshift, the comoving transverse vs. on-sky angular scale relation, for a range of scales in degrees. The r_p bin edges we employ are plotted as horizontal black lines, highlighting the limitations of too-small patches to sample larger r_p pairs, esp. at lower redshifts. The vertical dotted line indicates the z = 0.26 redshift division for our GAMA samples, and redshift distributions of red and blue galaxies in SDSS (z ∼ [ 0.02 , 0.3 ]) and GAMA (z ∼ [ 0.02 , 0.5 ]) are overlaid as coloured, dashed histograms. Grey shading indicates z <  0.02, which we exclude from our analysis.