Quality assessment results of the inversion carried out on our testing set by considering different surface effect prescriptions. Left column: quality of the fit of the target function by the averaging kernel quantified by χ_t. Right column: spearman coefficient ℛ_t of the lag plot. Top line: results of the mean density inversions. Middle line: results of the acoustic radius inversions. Bottom line: results of the central entropy inversions. The vertical dashed black lines delimit the different regimes of the selection flags.