**Table 7:** Frequencies detected close to the main pulsation f₀. Sources as in Table 3.
Year	Frequency	$\Delta V$	S/N	Source	Notes
	(cd^-1)	(mmag)
1995	25.2213	9.5( $\pm$ 1.3)	4.8	1
1996	25.2735	33.8( $\pm$ 1.1)	12.5	3
1996	25.9377	21.3( $\pm$ 1.1)	7.9	3
1996	25.6441	11.8( $\pm$ 1.1)	4.4	3
1999	25.2469	7.6( $\pm$ 0.5)	6.9	4
1999	25.9122	5.1( $\pm$ 0.5)	4.6	4
1999	25.6653	4.7( $\pm$ 0.5)	4.3	4
2000	25.239	7.9( $\pm$ 1.3)	5.1	5
2001	24.633	9.4( $\pm$ 1.3)	6.2	6	a
	25.928	9.9( $\pm$ 2.6)	2.6	5
2003	23.904	17.3( $\pm$ 1.0)	4.3	2	b
	24.220	7.5( $\pm$ 1.0)	3.0	7	c

Notes: a) Possible alias of $\sim$ 25.65 cd^-1;
b) Possible alias of $\sim$ 25.92 cd^-1;
c) Possible alias of $\sim$ 25.24 cd^-1.

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