Ratio of giants in the peak compared to all the giants as a function of Galactic latitude for three different ranges in longitude: 130° <  l <  150° (blue), 150° <  l <  170° (orange), and 170° <  l <  190° (green). The vertical lines give an orientation of the end of each structure with Galactic latitude (cf. Fig. 4). A sudden increase in the ratio can be seen in the part where the ACS is the more intense.