Left: differential rate of point-like gamma rays with Crab Nebula spectrum in mono and stereo for 20° zenith angle. Event rates for different stages of the analysis are shown: all triggered events (solid line), all events that survived cleaning (dashed line), events that survived quality cuts (dash-dotted line), and events that survived θ² and gammaness cuts used in the analysis (dotted line). Right: effective area for 20° zenith angle.