Fig. 3
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Properties of the VLBA test sample used in this study. Each panel corresponds to a different subsample: Top left: full sample of 1000 sources. Top right: subsample uniformly distributed in (VLA) flux (450 sources). Bottom left: subsample uniformly distributed in exposure time (450 sources). Bottom right: subsample randomly selected from observations at 15 and 22 GHz (100 sources). Each panel contains four subplots: (a) Histogram of source fluxes at 8.4 GHz from VLA observations of the CLASS survey (Myers et al. 2003). (b) Histogram of on-target exposure times, (c) Distribution of observation dates, (d) Sky distribution in equatorial coordinates.
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