Reduced Chisquare: Measures the quality of the pointing model fit
to the data. A high value (> 3) means a poor fit. A low value can
either mean a good fit, or too few single-source scans were used in
the fitting. The latter implies that many of the single-source
measurements failed, and indicates poor pointing performance for the
antenna. This can be checked by looking at the number of measurements
plot below.
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