Gaia pEW Hα measurements. Upper panel: position of sources identified as WR stars by the Gaia ESP-ELS algorithm (filled symbols), along with known Galactic WR stars not classified by the algorithm and [WR] CSPNe (empty symbols). The symbols have the same meaning as in Fig. 3. Bottom panel: position of the sources identified as WR stars by the Gaia ESP-ELS algorithm, color-coded by the quality flag.