Schematics of the extinction coefficient calculation in the line of sight (LOS) exemplified for the outermost bin in x for a vertical wind profile. The atmospheric wind pattern is assumed to be a constant radial velocity originating from the planet’s surface. γ is the angle running from the polar position towards the observer, R the assumed radius of the planet, b the impact factor and x the sum overall bins in the line of sight x = ∑Δx.