Analysis of the Solutions

NB: this section is unfinished. The finished analysis will be posted ASAP.

Here I address the problem of the contamination of the pooled root variance plots. Visual inspection of both Northern and Southern solution plots (Figures 1 and 2) reveals a number of sources above $\sigma = 0.1$. The typical reasons for large source variance are either intrinsic variability or faulty photometry (either due to instrumental errors, or due to misidentification of the sources in crowded fields). Here I analyze all sources with $\sigma > 0.1$and plot their raw (instrumental) magnitudes along with their calibrated magnitudes as the function of time. Each source is coded as Xn (cf. Figures 1, 2), where X is N (North) or S (South) and n is an integer.