Table 3: Frequencies detected in the three sets of data for each studied line. The He I 6678 and Mg II 4481 lines are outside the wavelength range of the Musicos spectrograph, and therefore not studied in 2001.
Frequency (c d^-1)

Line Year $f_{\rm rot}$ 2-f₁ f₁ 2f₁

He I 4713 1998 0.48 0.82 1.01 2.02

1999 0.50 0.75 0.92 1.06

2001 0.52 0.81 0.94 1.03 2.02

He I 4921 1998 0.47 0.75 0.89 1.03 2.03

1999 0.51 0.89? 1.07 2.06

2001 0.51 0.73 0.93 1.06 2.06

He I 5876 1998 0.48 0.75 0.97 1.03 1.07 2.02

1999 0.50 1.03 1.07 2.06

2001 0.51 0.82 1.00 1.09 2.03

He I 6678 1998 0.46 0.82 0.93 1.03 2.09

1999 0.50 1.03 1.07 2.06

Mg II 4481 1998 0.48 0.76 0.93 1.04 2.05

1999 0.50 0.75 0.94? 1.03 1.07 2.06

Si III 4553 1998 0.48 0.80 0.92 1.04 2.07

1999 0.85 1.03 1.05 2.06

2001 0.47 0.8 0.96 1.07 2.04

**Table 3:** Frequencies detected in the three sets of data for each studied line. The He I 6678 and Mg II 4481 lines are outside the wavelength range of the Musicos spectrograph, and therefore not studied in 2001.
		Frequency (c d^-1)
Line	Year		$f_{\rm rot}$	2-f₁	f₁		2f₁
He I 4713	1998	0.48	0.82		1.01		2.02
	1999	0.50	0.75	0.92		1.06
	2001	0.52	0.81	0.94	1.03		2.02
He I 4921	1998	0.47	0.75	0.89	1.03		2.03
	1999	0.51		0.89?		1.07	2.06
	2001	0.51	0.73	0.93		1.06	2.06
He I 5876	1998	0.48	0.75	0.97	1.03	1.07	2.02
	1999	0.50			1.03	1.07	2.06
	2001	0.51	0.82		1.00	1.09	2.03
He I 6678	1998	0.46	0.82	0.93	1.03		2.09
	1999	0.50			1.03	1.07	2.06
Mg II 4481	1998	0.48	0.76	0.93	1.04		2.05
	1999	0.50	0.75	0.94?	1.03	1.07	2.06
Si III 4553	1998	0.48	0.80	0.92	1.04		2.07
	1999		0.85		1.03	1.05	2.06
	2001	0.47	0.8	0.96		1.07	2.04

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