Recovery precision for T_eff (top) and log g (bottom) from the SLAM module across the Kiel diagram. Test spectra are binned by ΔT_eff = 1000 K and Δ log g = 0.5 dex (delineated by dashed grey lines). For each bin with a significant number of spectra, the four ‘traffic light’ bullets show the standard deviation of the label for S/Ns of (top to bottom) 30, 50, 100, and 250. Empty bins contain insufficient data for robust statistics.