Table 1: Summary of the target objects and observations log. The final column lists the duration of the simultaneous observation, i.e. the length of time over which both X-ray and radio data were obtained. In the case of UV Cet, this duration is identical for the 5 GHz and 8.3 GHz data.

Source	Spectral type	d	P	Observing date	Simultaneous observation length
		(pc)	(d)		(ks)
AD Leo	dM3.5e	4.7	2.7	14.05.2001	31.54
AU Mic	dM0e	10	4.85	13.10.2000	20.74
AT Mic	dM4.5e+dM4.5e	10.2		15.10.2000	16.16
UV Cet	dM5.5e+dM5.5e	2.7		07.07.2001	30.24
YZ CMi	dM4.5e	5.9		09.10.2000	20.04