Table 1: m values obtained from line profile variations in 3 independent datasets.

Freq.	m
[cd-1]	1995	1996	1998
1.47	7	7	8
13.85	-13	-12	-13
14.38	-14	-13	-13
14.94	-13	-15	-13
14.62	-12	-	-