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Fig. A.4.


Temporal variation of the umbral Doppler shifts of an observation sequence (see Obs. 8 in Table 1) The points represent the position of the Ti i line center in absolute air wavelength (left y-axis) and respective Doppler velocities in m s−1 (right y-axis). The temporal average at 5713.8944 Å is marked by a black solid line and corresponds to a blueshift of −21.5 m s−1. The error of the mean is given in brackets.

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