Top: FUV LFs derived following the method outlined in Sect. 9.1. The black lines represent the LFs when using the gas surface density versus the attenuation relation of Guiderdoni & Rocca-Volmerange (1987); Devriendt et al. (1999), whereas the blue lines represent the LFs when using the relations presented in the current paper, assuming a slab geometry. For both relations, the solid line represents a relation parameterised only on the gas surface density, whereas the dashed lines represent relations paramaterised both on the gas mass surface density and the oxygen abundance. Bottom: IR LF, the red lines represent the use of the relations derived in this paper.