WISE W3 flux densities vs. JVLA 1.4 GHz flux densities extrapolated from the 5.2 GHz flux densities using the total spectral indices from the α maps. The error bars of the flux densities are smaller than the size of the markers and are not shown. Sources with the WISE W3–W4 colour > 2.5, that is, sources that are unusually red and most likely to have enhanced star formation, are shown with filled red squares, and sources with the WISE W3–W4 colour < 2.5, that is, sources that are not unusually red, as filled blue circles. The black line denotes equal flux densities. Sources above the black line should have more contribution from star formation, whereas the sources below the black line should be dominated by AGN activity.