Fig. 6. Comparative fit of seven models: (a) loam (Manseoung soil, 0–12 cm), (b) silt loam (Yihyun soil, 11–20 cm), and (c) sandy clay loam (Kangseo soil, 28–78 cm). Obs. = observed, SL = simple lognormal model, SC = Shiozawa and Campbell model, Gomp. = Gompertz model, ORL = offset-renormalized lognormal model, ONL = offset-nonrenormalized lognormal model, and Fred. = Fredlund model.