Table 2:

Temporal evolution in the multicolor polarization of GG Car from the literature.

Date/epoch	Band		PA	Ref.a
		(%)	()
1973-1975	V	2.2 (0.1)	99.3	1
1980 Mar.	U	0.8 (0.1)	99.0	2
	B	1.6 (0.1)	99.0	2
	V	1.65 (0.4)	95.0	2
1989 May	U	1.6 (0.1)	100	3
	B	2.5 (0.1)	100	3
	V	2.1 (0.1)	100	3
	R	1.9 (0.1)	100	3

Errors in parenthesis. ^a (1) Klare & Neckel (1977), mean of two measurements. It is not clear which broadband filter was used. We assumed optical V broadband for simplicity; (2) Barbier & Swings (1982), mean of five measurements and after taking into account an interstellar contribution; (3) Gnedin et al. (1992). The PA quoted is the mean value including all filters as reference.