Column density as a function of the rest-frame equivalent width of the absorbers for the full sample of Mg II (gold) compared to those that overlap with the strong HI systems from MAGG IV (orange) and for the full sample of C IV lines from MAGG V (gray) compared to those matched to the Mg II sample (black). Solid lines show the equivalent width as a function of the column density in the linear regime of the curve of growth. The distributions for column density and the equivalent width are shown on the right and top panels. We matched the samples within a linking velocity window of |Δv| = 150 km s⁻¹.