Histogram showing the number of spectra in each S/N bin for the training (yellow, 7031 stars) and observed (green, 5096 stars) samples (top panel). Bias (Bias = mean (CNN-iDR6), solid) and dispersion (σ = std(CNN-iDR6), dash-dot) as a function of S/N (bottom 4 panels). The observed sample is selected within training label limits, eVRAD < 1.0 km/s, with no GES flags and with UPPER_COMBINED_LI1 = 0.0. For the observed sample, we have very few stars in the two highest S/N bins in comparison to the lower S/N bins.