  In this second paper in the series, we investigate occurrence frequencies of
apparent unipolar processes, cancellation, and emergence of patch structures in
quiet regions. Apparent unipolar events are considerably more frequent than
cancellation and emergence as per our definition, which is consistent with Lamb
et al. (2013). Furthermore, we investigate the frequency distributions of
changes in flux during apparent unipolar processes are and found that they
concentrate around the detection limit of the analysis. Combining these
findings with the results of our previous paper, Iida et al. (2012), that
merging and splitting are more dominant than emergence and cancellation, these
results support the understanding that apparent unipolar processes are actually
interactions with and among patches below the detection limit and that there
still are numerous flux interactions between the flux range in this analysis
and below the detection limit. We also investigate occurrence frequency
distributions of flux decrease during cancellation. We found a relatively
strong dependence, 2.48$\pm$0:26 as a power-law index. This strong dependence
on flux is consistent with the model, which is suggested in the previous paper.
