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Figure 14: Difference image of estimated clay and organic carbon content based on HyMap images from 2004 and 2005 for an agricultural field near the city of Marienfelde. Q1: lower quartile, Q3: upper quartile. Mean deviation (RMSE) calculated from estimations in 2005 and 2004. The location of this field on the test site DEMMIN is marked by a red flag in Figure 1.