Corner plot derived from the MCMC fitting of the N V (Sect. 4.2). In this figure we show the integrated line flux (F_N V in 10⁻²⁰ erg s⁻¹ cm⁻² Å⁻¹) and the Gaussian line width (σ_N V, in Å) of the systemic N V emission; the line center (L_N V,b in Å), integrated line flux (F_N V,b), and Gaussian line width (σ_N V,b) of the blueshifted N V component (for the 1238 Å line); and the Doppler parameter (b₁) and column density (N_N V,1) of absorber #1. The black dotted lines in each of the histograms represent 15.8 and 84.2 percentiles, which correspond to the reported uncertainty ranges. The blue solid lines mark the median and reported fit values, respectively.