Left: average surface emission height plotted against deprojected radial distance from the star of both CO and [CI] obtained with disksurf. The shaded region shows 1σ scatter of the original obtained points shown in Fig. B.3. Right: best fitted model for [CI] and CO surface emission. For the first, a simple exponentially tapered power law function (as is described in Eq. (3)) was used; meanwhile, for CO, a double exponentially tapered power law function is considered to get a better modeling of its double-peaked shape. The shaded region was obtained by sampling the posterior distribution of the parameters.