Table 2: Basic data for twilight sky spectra shown in Fig. 9.
Date UT start $\Delta \lambda/\lambda$ Alt Az $\varphi$

Å( FWHM) deg deg deg

2001-09-21 10:06:58 130 82.6 117.5 6.5

2003-11-29 09:02:25 13 65.8 122.9 9.4

2003-02-28 09:45:52 16 27.5 299.3 11.9

1999-04-16 09:54:36 12 41.1 233.4 14.8

**Table 2:** Basic data for twilight sky spectra shown in Fig. 9.
Date	UT start	$\Delta \lambda/\lambda$	Alt	Az	$\varphi$
		Å( FWHM)	deg	deg	deg
2001-09-21	10:06:58	130	82.6	117.5	6.5
2003-11-29	09:02:25	13	65.8	122.9	9.4
2003-02-28	09:45:52	16	27.5	299.3	11.9
1999-04-16	09:54:36	12	41.1	233.4	14.8

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