Scatter plot of magnetic field strength versus temperature. All three panels show the same pixels but the different populations (see text) are highlighted by colour coding with μ. The data points in the figure are pixels in the FOV which meet the noise thresholds. Pixels from large magnetic patches with embedded polar faculae (panels b and c) are denoted with asterisks and solid triangles. The plot has data points from two consecutive observing runs of IMaX.