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Fig. 4

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GRB 130215A: optical and NIR LCs. The optical data have been corrected for foreground extinction and converted into mJy using the flux zeropoints from Fukugita et al. (1995). Data obtained in each filter have been fitted with a single PL up to tt0 = 1.0 d (except for Y, which was normalised using the detection at 2.5 d), where α = 1.25 ± 0.01 (χ2/ d.o.f. = 231.9/141). A plateau is seen in all filters from tt0 = 1–6 d, where each LC deviates from a single PL-like decline.

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