Precision of model network predictions as a function of the lens and lensed source brightness ratio in the range for the three networks presented in Sect. 4 applied to the restricted sample with . Upper row: image position offset for the x coordinate (left) and y coordinate (right). Middle panel: legend (left) and histogram of the difference in time-delay (right), bottom row: fraction of the time-delay difference and the true time-delay (left) and the time-delay difference (right). The curves show the median and the vertical bars the 1σ values. The blue and orange bars have been shifted slightly to the right for better visualization.