Cloudy models for component 8 (a ,b) and 6 (c, d) in the absorption line system at z = 1.839. The lines represent the Cloudy predictions and the symbols the measured values. The correlation between the symbols and the lines is shown in the legends in the upper right corners. Circles correspond to measured values with the error bars being smaller than the symbol itself except for sulphur. For Al iii and N i an upper limit is given in a) and b). The vertical black lines indicate the hydrogen density of the specific models (see text). Some symbols have a horizontal offset for clarity.