Fig. 14. Autoregressive state-space (95% confidence intervals), neural network (ANN), and pedotransfer (CPTF) estimation of hydraulic conductivity at h = –50 cm (K50) at the 40- to 60-cm depth increment within the four nests of the experimental site. Soil physical measurements yielding values for K50 were taken at the 47- to 53-cm depth.