Black points show the FM parameters of extinction curves in Valencic et al. (2004); open circles (green) are the FM parameters of C type anomalous curves as derived from our models (see Sect. 3), (red) stars and (blue) triangles are the same of A and B types, and (cyan) open squares of WD CCM models (see text); black continuous lines are the relationships in Table 9 with r > 0.50, (cyan) dashed lines are the same for WD CCM curves (Table 7).