Comparison between our estimate of effective temperatures (•), and the values we got from available VizieR catalogues. The latter collections are represented as classical boxplots. (The horizontal bar inside each box indicates the median, or Q₂ value, while each box extends from first quartile, Q₁, to third quartile Q₃. Extreme values, still within a 1.5 times the interquartile range away from either Q₁ or Q₃, are connected to the box with dashed lines. Outliers are denoted by a “+” symbol.) Objects we studied are listed along the horizontal axis. In addition, for each object at level T_eff ~ 2800 K, we explicated the number of values found among all VizieR catalogues.