KDE of the radius distribution of exoplanets of $R_p<5R_{\oplus }$ for different sub-samples, zoomed around the radius valley. Top panel: our whole catalogue (orange), the HQ sample (blue, same line as in Fig. 15), HQ sample with host star effective temperature between 4700 and 6500 K (green dashed, reference sample), and reference sample restricted to planets suffering more than 30 times the stellar incoming luminosity received by the Earth. Bottom panel: reference sample for M_* < 1.1 M_⊙, split in two bins of metallicity of the host star. Grey regions: radius ranges used to compute V_A (see footnote 14).