Ratio of line intensity standard deviation to line intensity (in percentage) for 213 Ni I lines spanning 300–500 nm as a function of iteration number (see text). Spectra were generated at the orbital conditions of the closest approach of C/1996 Hyakutake and are plotted at 10, 10², 10³, 10⁴, 10⁵, and 10⁶ iterations. Each colored line shows the convergence of an individual transition.