Azimuthally averaged radial profiles of the atomic gas surface density (left panel) and the HI velocity dispersion (central panel) from Iorio et al. (2017), and of the SFR surface density (right panel) from FUV photometry (Zhang et al. 2012) for WLM. The dot-dashed black curve in the left panel is the best-fit polynomial function (Eq. (10)) used to model the gas radial distribution. The solid and the dashed black lines in the central panel are the best-fit functions (Eq. (11)) used to model, respectively, the velocity dispersion and its upper and lower limits, which were adopted to derive the scale height and its uncertainty.