FUV flux experienced by discs in seven regions located ≲200 pc from the Sun. The three approaches we used to evaluate the FUV flux are presented in yellow (Method 1), purple (Method 2), and orange (Method 3). The dashed lines show the median FUV flux value for each calculation method and region. x-axis: Distance from the most massive star, or the centre of the region (when the distribution of OBA stars, and therefore FUV fluxes, is approximately uniform in the region).