Table 1: Data used for this analysis. Spectra were taken with different high-resolution spectrographs. Detection of differential rotation requires higher resolution in slower rotators. The minimum rotation velocities required for determining the rotation law are given in Col. 4. From the 147 spectra from which differential rotation could be determined, 28 stars show signatures of differential rotation.
Instrument Resolving power $\lambda/\Delta\lambda$ Wavelength range [Å] min. $v~\sin{i}$ [km s^-1] Total # of stars # of differential rotators

CES 220 000 40 12 32 14

FEROS 48 000 6000 45 23 3

FOCES 40 000 6000 45 81 7

FLAMES/UVES 47 000 2000 45 11 4

Total 147 28

**Table 1:** Data used for this analysis. Spectra were taken with different high-resolution spectrographs. Detection of differential rotation requires higher resolution in slower rotators. The minimum rotation velocities required for determining the rotation law are given in Col. 4. From the 147 spectra from which differential rotation could be determined, 28 stars show signatures of differential rotation.
Instrument	Resolving power $\lambda/\Delta\lambda$	Wavelength range [Å]	min. $v~\sin{i}$ [km s^-1]	Total # of stars	# of differential rotators
CES	220 000	40	12	32	14
FEROS	48 000	6000	45	23	3
FOCES	40 000	6000	45	81	7
FLAMES/UVES	47 000	2000	45	11	4
Total				147	28

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