Primary observational properties of pointings in KiDS+KiDZ for observations in the four optical bands. Observations in the i-band are split into the two epochs (labelled i₁ and i₂). Each row shows the distribution of average PSF sizes (as reported by ASTROWISE; left) and limiting magnitude (5σ in a 2″ diameter circular aperture; right) determined with a KDE using the annotated kernel. The corresponding cumulative distribution functions for each panel are shown as grey dashed lines.