Posterior distributions obtained for the coefficients C_⋆ and C_mol, following the same methodology described in Sect. 3.1, but applying different levels of detection fraction threshold. The top two panels show the base case scenario, using the full sample without applying any detection fraction threshold. The following panels show our fiducial adopted value (60%) and thresholds at 50% and 70%. The threshold level and the number of pixels used for each measurement are indicated in the top left corner for each row.