Same as Fig. 4 but for the Gaia DR3 (red contours) and M19 YSO candidates with R ≥ 0.5 and LY ≥ 0.95, or R < 0.5 and SY ≥ 0.95 (green dots and contours). The probability distributions are shown in Figs. B.4 and B.8. The main parameters of the distributions are listed in Table 1. Because the Gaia DR3 YSO distribution is narrower, for better visibility we plotted them on the top of the M19 distribution.