Figure 6: a) relative number of outliers for the 90 % tolerance interval and b) 70 % tolerance interval for simulated Ea orETa at tend (10988 days) for the 13 pedotransfer functions over all USDA soil classes and scenarios depicted in Fig. 2. Dotted lines represent a threshold of 10 and 20 % outliers separating robust (<10 %), intermediate (10-20%), and non-robust (>20%) pedotransfer functions.