Top row: molecular-gas surface density (left), Hα-based SFR surface density (middle) and stellar surface density (right). CO(1–0) intensity contours are over-plotted in grey. The 3″ SDSS fibre is over-plotted with a dashed black circle. Bottom row: diagrams obtained after degrading the maps to the same spatial resolution (see text). From left to right: KS diagram with 2D bins colour-coded by the number of contributing MaNGA spaxels; KS diagram with one dot per MaNGA spaxel, colour-coded by its distance to the centre of the SDSS fibre; molecular-gas surface density versus stellar surface density; and SFR surface density versus stellar surface density. In the two KS diagrams, locations of constant depletion times are shown as diagonal black lines, and as a diagonal blue line for the average depletion time of high-density molecular gas.