Example of individual radial velocity measurements by using a cross-correlation technique based on different wavelength ranges for the SB1 system (left panel, BLOeM 1-103) and an apparently single BSG with small RV variation (right panel: BLOeM 4-023, noting that the ordinate axis is significantly zoomed-in). Blue error bars represent the standard deviation of measurements based on the cross-correlation of the entire wavelength range and the red error bars represent the standard deviation of mean radial velocity based on the three different wavelength pieces.