Errors in Teff (top panel) and [Fe/H] (bottom panel) as a function of log g. We plot the Gaia sample (red circles), the Sa09 sample (green diamonds), and the joint-sample (blue open triangles). The dashed lines represent the maximum error a measurement can have to be considered trustworthy, 18 K and 0.10 dex for Teff and [Fe/H]. The vertical dot-dashed lines represent the log g limit of the Te16 calibration.
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