Table 2: Previous pulsation frequency determinations for HD 104237. The first column indicates the year of observation, the second column the frequency; the corresponding period is shown in Col. 3; Col. 4 indicates spectroscopic or photometric oscillation amplitudes; the Col. 5 indicates the reference: [1] Donati et al. (1997), the 0.65 km s^-1 amplitude in this table is calculated as half of the 1.3 km s^-1 peak-to-peak amplitude stated in the paper; [2] Kurtz & Müller (2001).
Year Frequency Period Amplitude Reference

(d^-1) (min)

1993 f₁ = 37.3 38.6 0.65 km s^-1 [1]

1995 f₁ = 39.6 36.4 0.65 km s^-1 [1]

1998 f₁ = 33.29 43.3 11.2 $\pm$ 0.5 mmag [2]

f₂ = 36.61 39.3 3.4 $\pm$ 0.5 mmag [2]

**Table 2:** Previous pulsation frequency determinations for HD 104237. The first column indicates the year of observation, the second column the frequency; the corresponding period is shown in Col. 3; Col. 4 indicates spectroscopic or photometric oscillation amplitudes; the Col. 5 indicates the reference: [1] Donati et al. (1997), the 0.65 km s^-1 amplitude in this table is calculated as half of the 1.3 km s^-1 peak-to-peak amplitude stated in the paper; [2] Kurtz & Müller (2001).
Year	Frequency	Period	Amplitude	Reference
	(d^-1)	(min)
1993	f₁ = 37.3	38.6	0.65 km s^-1	[1]
1995	f₁ = 39.6	36.4	0.65 km s^-1	[1]
1998	f₁ = 33.29	43.3	11.2 $\pm$ 0.5 mmag	[2]
	f₂ = 36.61	39.3	3.4 $\pm$ 0.5 mmag	[2]

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