TFR for the sample of high-quality cluster galaxies (55 objects; blue squares) and field galaxies (57 objects; green triangles). Open symbols indicate the corresponding low-quality objects. The blue dashed and green dot-dashed lines indicate the best-fit inverse regression lines of cluster and field galaxies, respectively. B-band TFR (left panel): field galaxies are brighter by . SmTFR (right panel): we find no difference between the intercept and intrinsic scatter of the two populations (ΔM_∗ = 0.00 ± 0.07, Δσ_int = 0.01 ± 0.04).