Open Access

Fig. 2

image

Time windows associated with the reduced positions of the source 0014+813. These windows correspondto the time spans over which session-based coordinates were averaged (see Sect. 2.3). The size of the gray circles is based on the number of sessions within the windows, close to 50 for the smallest circles and near 100 for the largest ones. The abscissa indicates the weighted mean of the individual epochs within each window.

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