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Table A.1

Long-term evolution of the r-band flux ratio BA.

TS# (season)a /dofb BAc
TS-9 (1996/1997) 1.06 1.028 ± 0.010 583.1
TS-8 (1997/1998) 0.72 1.038 ± 0.008 885.3
TS-7 (1998/1999) 1.17 1.021 ± 0.005 1254.1
TS-6 (1999/2000) 1.06 1.022 ± 0.007 1605.1
TS-5 (2000/2001) 1.00 1.039 ± 0.006 1969.4
TS-4 (2001/2002) 0.69 1.008 ± 0.006 2394.4
TS-3 (2002/2003) 0.82 0.995 ± 0.012 2747.8
TS-2 (2003/2004) 1.34 0.992 ± 0.009 3052.8
TS-1 (2004/2005) 1.00 1.011 ± 0.007 3450.1
TS0 (2005/2006) 0.99 1.026 ± 0.009 3849.4
TS1 (2006/2007) 1.00 1.022 ± 0.004 4162.6
TS2 (2007/2008) 1.05 1.054 ± 0.004 4556.6
TS3 (2008/2009) 0.89 1.016 ± 0.003 4954.2
TS4 (2009/2010) 2.81 1.060 ± 0.004 5276.8
TS5 (2010/2011) 0.67 1.060 ± 0.008 5656.6
TS6 (2011/2012) 1.18 1.086 ± 0.017 6001.2
TS7 (2012/2013) 2.05 1.127 ± 0.010 6348.5
TS8 (2013/2014) 0.99 1.162 ± 0.007 6727.6
TS9 (2014/2015) 0.93 1.170 ± 0.007 7091.8
TS10 (2015/2016) 1.99 1.178 ± 0.010 7458.4

Notes. (a) Time segment and observing season of B; (b) reduced chi-square for the best fit (dof = degrees of freedom); (c)formal 2σ confidence interval; (d)average epoch of B (MJD−50 000) in the overlapping period between A(+420 d) and the time segment. (⋆) Two bin semisizes lead to fits of similar quality, so we cite the average values of /dof, BA and ⟨tB ⟩ using both semisizes.

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