Normalized (with respect to the area) X-ray spectra of (a) TW Hya (Nomura et al. 2007), (b) Herbig Ae HD 104237 (Skinner et al. 2004), and (c) X-ray background field (XBGF) of YSO clusters (Rab et al. 2018). The source spectrum is represented along with its attenuation for different H column densities. (d) Extrapolated photodesorption yield spectra from our experimental results and using the absorption cross section of gas-phase methanol from Berkowitz (2002).