Chromatic behavior of the SPIRou data. Top: relative S/N as a function of wavelength for the hottest and coolest stars in the sample. The S/N values have been normalized at 1650 nm. Middle: RV uncertainty for a selection of program stars with decreasing effective temperatures from top to bottom in the legend plotted along the spectrum. The yellow areas show the bands with maximum telluric absorption. The RV uncertainty has been normalized to an S/N of 150 at 1650 nm. Bottom: ratio of the median RV error in a single band and the median RV error in the whole spectrum as a function of effective temperature for the whole data set. Larger symbols represent the few stars with a resolved projected rotational velocity.