Correlations between transmission spectra of different planets (see Section 2.2.4). Note that here the color map is linear between p = 0 and 0.5, because the p-values are higher than in Figure 2 (as expected for different planets). TOI-270 d and TOI-732 c cannot be compared with WASP-17 b and WASP-39 b because of the different wavelength binning.