Joint posterior distributions for the planetary longitudes bounding the less reflective region (x_ı, x₂) for Kepler-41 b in grayscale, in comparison with the theoretical predictions for several refractory species in each subplot, in color. The gray curves indicate the 1 and 2σ contours for (x₁, x₂). Each species’ condensation temperature is converted to a coordinate in (x_ı, x₂), which varies as a function of the cloud pressure, producing the track of colored points which are labeled with the corresponding cloud pressure in units of bar. For example, the observed longitudes spanning the less reflective region of Kepler-41 b are 2σ consistent with CaTiO₃ clouds located near 0.19 bar. Plausible cloud pressures for all species range from 0.08 to 0.2 bar.