Fig. 4

AsFig. 2, but using method c. Third row: flux ratio from photometry (black) from spectrum analysis based on the photometric flux ratio assuming R2 ∕R1 = 1.17 (red) and on the adjusted ratio of R2∕R1 = 0.87 (green). Bottom row: ratio of the photometric flux ratio to the flux ratio obtained from spectrum analysis based on R2 ∕R1 = 1.17.
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