Scoring results of CO for PZ Tel B simulations in its real noise. Subfigures 3 and 4, column 1: Synthetic brown dwarf insertion with its original average signal strength and decay representing good seeing conditions. Subfigure 3 and 4, col. 2: Insertion of the brown dwarf at 1/3 (Subfigure 1) and at 1/6 (Subfigure 2) of the original signal strength, using noise from the bad seeing conditions. Subfigure 3,4; col. 3,4: S/N maps (col. 3) and CNN maps (col. 4) showing the scoring results for the insertions in bad seeing conditions from col. 2.