Fig. A.1

The complete optical/NIR data set of the afterglow of GRB 080928 as listed in Tables A.1–A.3. All magnitudes are given in the Vega system, and the GROND magnitudes are corrected according Greiner et al. (2008). Colors have been shifted by the values given in the legend for clarity. Downward pointing triangles are upper limits, uvw2 was the only filter in which only upper limits could be derived.
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