Fig. A.1
Left: altitude (elevation) of Sgr A* as a function of polarization angle as derived from all data. Right: total flux density as a function of polarization angle; the bin width in polarization angle is 15°. The values for individual measurements are shown as black dots. The mean values per bin are shown as red dots with error bars indicating the standard deviation, if the number of data points per bin is larger than 2.
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