Top: number of hot subdwarfs per G-magnitude bin observed by Kepler, K2, TESS (hot subdwarfs observed in primary mission, which are almost all reobserved in the extended mission), TESS extended only (hot subdwarfs observed for the firsttime in the extended mission; S27 to S32), and CHEOPS (as of 19 December 2020). Bottom: celestial distribution of these hot subdwarfs: TESS primary mission (blue dots), TESS extended mission 2 min and 20 s (red and dark orange dots), Kepler (purple crosses), K2 (black triangles), and CHEOPS (green stars).