Phase angle    Brightness      Error
(degree)  (arbitrary units) (arbit.units)
12		6.8		2.5
15		10.5		3.3
17		16.5		5.3
20		8.3		2.7
23		8.0		2.4
25		9.6		3.0
30		24.9		7.3
40		18.4		5.4
50		16.8		4.6
60		10.8		2.7
70		16.2		5.7
80		18.9		5.2
90		7.3		1.7
100		12.2		2.9
110		27.1		4.8
120		16.3		3.2
130		8.1		1.9
140		12.1		2.9
150		24.2		5.8
160		35.9		12.1