Comparison of the global properties obtained with different bases GM (vertical axis) and CB (horizontal). The top panels compare luminosity-weighted ages (⟨log t⟩_L), mass-weighted metallicities (log ⟨Z⟩_M), extinction (A_V), and initial stellar masses (log M′) obtained for ~10⁵ zones of 107 CALIFA galaxies, with contours drawn at every 20% of enclosed points. The bottom panels repeat the comparisons, but now for galaxy-wide values. A one-to-one line is drawn in all panels. Note that zone masses in the top-right panel are multiplied by 100 to put them on the same scale as the bottom panel.